Large-angle leveling mechanism

Abstract

The invention discloses a large-angle horizontal alignment mechanism which comprises an alignment hand wheel, a bevel gear assembly, a screw pair assembly, an alignment seat, a transverse shaft and a main shaft, the transverse shaft is fixedly installed on the main shaft through a clamping pin, and a rotating block is installed at one end of the main shaft through a pin shaft; coaxial mounting holes are formed in the two sides, in the diameter direction, of the alignment base, the alignment base is installed on the transverse shaft through the mounting holes in the two sides, one side of the screw pair assembly is fixedly installed on the alignment base, the bevel gear assembly is installed on the other side of the screw pair assembly, and the alignment hand wheel is installed on the bevel gear assembly. The device is compact in structure and small in occupied space volume, can obtain a large-angle correction range by selecting proper part sizes, and is suitable for being mounted and used in a limited space of a vehicle.

Description

Technical Field

[0001] This invention relates to a leveling mechanism, and more specifically to a large-angle leveling mechanism used in vehicle equipment. Background Technology

[0002] Some equipment used in vehicles requires a horizontal reference point during operation, meaning the equipment must be level. Therefore, horizontal and vertical spirit levels are typically installed on the equipment or its mounting bracket as level indicators. When the bubbles in the spirit levels are centered, the equipment is level. When the vehicle's posture changes, causing the equipment to tilt, the bubbles in the spirit levels will no longer be centered. In this case, the equipment's posture needs to be adjusted. This is done by operating an angle adjustment mechanism to cause the mounting bracket to sway relative to the fixed part of the vehicle, thus centering the bubbles in the spirit levels and restoring the equipment to a level position. This angle adjustment mechanism is called a leveling mechanism.

[0003] Existing leveling mechanisms come in various forms, but their basic structure involves one end connected to a device connector and the other end connected to other fixed parts of the vehicle. The device's orientation is altered by changing the distance between the connector and these fixed parts, achieving leveling by centering the bubbles in the horizontal and vertical spirit levels. However, these mechanisms typically offer a small leveling angle, generally not exceeding 8°. Increasing the leveling angle requires a larger space, hindering installation within the limited space of a vehicle. Therefore, existing leveling mechanisms cannot simultaneously meet the requirements of a large leveling angle, small space occupation, and suitability for installation within the confined space of a vehicle. Summary of the Invention

[0004] In order to simultaneously meet the requirements of large alignment angle and small space occupation, this invention proposes a large-angle horizontal alignment mechanism suitable for installation and use in the limited space of a vehicle, which can enable the alignment angle of the device to reach more than 12°.

[0005] This invention is achieved through the following technical solution: a large-angle horizontal alignment mechanism, comprising an alignment handwheel, a bevel gear assembly, a screw assembly, an alignment seat, a horizontal shaft, and a main shaft. The horizontal shaft is fixedly mounted on the main shaft by a snap pin, and a rotating block is mounted on one end of the main shaft by a pin. The alignment seat has coaxial mounting holes on both sides in the diameter direction, and the alignment seat is mounted on the horizontal shaft through the mounting holes on both sides. One side of the screw assembly is fixedly mounted on the alignment seat, and the other side of the screw assembly is equipped with a bevel gear assembly, on which the alignment handwheel is mounted.

[0006] Furthermore, the alignment seat adopts a hollow structure, and positioning surfaces one are provided on the outside of the two coaxial mounting holes. Positioning surfaces two are provided on both sides of the main shaft. When the alignment seat and the horizontal shaft are installed in place, positioning surfaces one on both sides are respectively attached to the outside of positioning surfaces two on both sides. The design of the above positioning surfaces makes the alignment seat only able to rotate around the horizontal shaft axis, but will not move along the axial direction of the horizontal shaft.

[0007] Furthermore, oil storage grooves are provided on the cylindrical surfaces at both ends of the horizontal shaft, which can be filled with lubricating grease so that the guide seat can still receive sufficient grease lubrication even after rotating around the horizontal shaft for a long time.

[0008] Furthermore, the bevel gear assembly includes a gear ring, a boss ring, and a first bevel gear. The shaft of the first bevel gear is installed in the inner hole of the boss ring. The gear ring and the first bevel gear are fixed together by screws. This design allows the gear ring and the first bevel gear to rotate relative to the boss ring.

[0009] Furthermore, the bevel gear assembly is equipped with an anti-loosening mechanism. This design prevents the straightening mechanism from deflecting due to vibrations from vehicle movement or other equipment operating on the vehicle. The anti-loosening mechanism includes an anti-loosening cone, a spring, an anti-rotation screw, and a plug. The anti-loosening cone, spring, and plug are installed in the small hole of the boss ring. A flat surface is provided on the outer cylindrical surface of the anti-loosening cone. The anti-rotation screw is a flat-end screw. The anti-rotation screw presses against the flat surface of the outer cylindrical surface of the anti-loosening cone through the screw hole of the boss ring, so that the anti-loosening cone can only move along the axis of the small hole of the boss ring but cannot rotate.

[0010] Furthermore, the outer cylindrical surface of the gear ring is provided with a tooth groove, and the conical tooth of the anti-loosening cone is placed in the tooth groove of the gear ring; when rotating the straightening handwheel, the spring force of the spring must first be overcome so that the side of the tooth groove of the gear ring pushes the loosening cone into the small hole of the boss ring, and the gear ring can then rotate. That is, a certain force must be applied to the straightening handwheel to make the gear ring rotate, so as to avoid the straightening mechanism from deflecting due to vehicle driving vibration or vibration of other equipment working on the vehicle.

[0011] Furthermore, the screw assembly includes a screw, a U-shaped nut, a second bevel gear, a connecting seat, a limiting block, a limiting ring, a bearing, and a bearing retaining ring. One side of the connecting seat is connected and fixed to the alignment seat, and the other side of the connecting seat is connected and fixed to the boss ring of the bevel gear assembly. Bearings are installed at both ends of the screw, and the screw is mounted on the mounting seat through the bearings and bearing retaining rings at both ends. A second bevel gear is installed inside the bearing at one end of the screw, and the second bevel gear meshes with the first bevel gear of the bevel gear assembly. A U-shaped nut is installed in the middle of the screw, and the two U-shaped surfaces of the U-shaped nut are engaged with the two sides of the rotating block.

[0012] Furthermore, a limiting block is installed on the connecting seat, forming a groove between the connecting seat and the limiting block. One side of the U-shaped nut protrudes, and this protrusion engages within the groove between the connecting seat and the limiting block, allowing the U-shaped nut to move only along the axis of the screw but not to rotate. A limiting ring is provided near each end of the screw, restricting the movement range of the U-shaped nut. By selecting appropriate component dimensions, the U-shaped nut can achieve a sufficient range of motion, thus enabling the straightening mechanism to have a larger straightening angle.

[0013] Furthermore, the regulating handwheel is mounted on the gear ring of the bevel gear assembly.

[0014] Compared with the prior art, the advantages of the present invention are as follows: 1. Compact structure, small footprint; 2. By selecting appropriate part dimensions, such as the axial length of the U-nut and the distance between the two limit rings, the equipment's calibration angle can reach more than 12°, achieving a larger calibration range. 3. By setting an anti-loosening mechanism, the straightening mechanism can be prevented from deflecting due to vehicle vibration or vibration from other equipment on the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of a vehicle after it has been horizontally corrected by the present invention when the vehicle is tilted. Figure 4 This is a schematic diagram of the structure after removing the alignment seat; Figure 5 This is a schematic diagram of the structure after removing the alignment seat and the connecting seat; Figure 6 It is a sectional view of the connection structure of the alignment seat, horizontal axis, main axis, locking pin, rotating block, and pin shaft; Figure 7 It is an exploded view of the components including the alignment seat, horizontal shaft, main shaft, retaining pin, rotating block, and pin. Figure 8 This is a structural schematic diagram of a bevel gear assembly; Figure 9 This is an exploded view of the bevel gear assembly. Figure 10 This is a structural schematic diagram of the screw assembly; Figure 11 This is an exploded view of the screw assembly. In the diagram: 1. Alignment handwheel, 2. Bevel gear assembly, 21. Gear ring, 22. Boss ring, 23. Bevel gear one, 24. Screw, 25. Anti-loosening mechanism, 251. Anti-loosening cone, 252. Spring, 253. Anti-rotation screw, 254. Plug, 3. Screw pair assembly, 31. Screw, 32. U-nut, 33. Bevel gear two, 34. Connecting seat, 35. Limiting block, 36. Limiting ring, 37. Bearing, 38. Bearing pressure ring, 4. Alignment seat, 41. Mounting hole, 42. Positioning surface one, 5. Horizontal shaft, 51. Oil reservoir, 6. Main shaft, 61. Positioning surface two, 7. Locking pin, 8. Rotating block, 9. Pin. Detailed Implementation

[0016] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] like Figure 1-11 As shown, a large-angle horizontal alignment mechanism of this embodiment includes an alignment handwheel 1, a bevel gear assembly 2, a screw assembly 3, an alignment seat 4, a horizontal shaft 5, a main shaft 6, a locking pin 7, a rotating block 8, and a pin 9. The main shaft 6 is connected to the vehicle, and the horizontal shaft 5 is vertically installed inside the main shaft 6. The locking pin 7 connects and fixes the horizontal shaft 5 and the main shaft 6 into a single unit. A rotating block 8 is mounted on one end of the main shaft 6 via the pin 9, and the rotating block 8 can rotate around the axis of the pin 9.

[0018] like Figure 1 , 5 As shown in Figure 7, the alignment seat 4 has a hollow structure. Coaxial mounting holes 41 are provided on both sides of the alignment seat 4 along its diameter. The alignment seat 4 is mounted on the horizontal shaft 5 through the mounting holes 41 on both sides. Positioning surfaces 42 are provided on the outside of both coaxial mounting holes 41, and positioning surfaces 61 are provided on both sides of the main shaft 6. When the alignment seat 4 and the horizontal shaft 5 are installed in place, the positioning surfaces 42 on both sides are respectively attached to the outside of the positioning surfaces 61 on both sides. The design of these positioning surfaces ensures that the alignment seat 4 can only rotate around the axis of the horizontal shaft 5 and cannot move along the axis of the horizontal shaft 5. Oil reservoirs 51 are provided on the cylindrical surfaces at both ends of the horizontal shaft 5. These oil reservoirs 51 can be filled with lubricating grease, ensuring that the alignment seat 4 receives sufficient lubrication even after long-term rotation around the horizontal shaft 5.

[0019] like Figure 8 , 9 As shown, the bevel gear assembly 2 includes a gear ring 21, a boss ring 22, and a bevel gear 23. The straightening handwheel 1 is mounted on the gear ring 21 of the bevel gear assembly 2. The shaft of the bevel gear 23 is mounted in the inner hole of the boss ring 22. The gear ring 21 and the bevel gear 23 are fixed together by screws 24. This design allows the gear ring 21 and the bevel gear 23 to rotate relative to the boss ring 22. The bevel gear assembly 2 is equipped with an anti-loosening mechanism 25. This design can prevent the straightening mechanism from deflecting due to vibrations from vehicle driving or other equipment operating on the vehicle. The anti-loosening mechanism 25 includes an anti-loosening cone 251, a spring 252, an anti-rotation screw 253, and a screw plug 254. The anti-loosening cone 251, spring 252, and screw plug 254 are installed in the small hole of the boss ring 22. A flat surface is provided on the outer cylindrical surface of the anti-loosening cone 251. The anti-rotation screw 253 is a flat-end screw. The anti-rotation screw 253 presses against the flat surface of the outer cylindrical surface of the anti-loosening cone 251 through the screw hole of the boss ring 22, so that the anti-loosening cone 251 can only move along the axis of the small hole of the boss ring 22 but cannot rotate. The outer cylindrical surface of the gear ring 21 is provided with a tooth groove. The top of the conical tooth of the anti-loosening cone 251 is in the tooth groove of the gear ring 21. When the straightening handwheel 1 is rotated, the spring force of the spring 252 must be overcome first, so that the side of the tooth groove of the gear ring 21 pushes the anti-loosening cone 251 into the small hole of the boss ring 22 before the gear ring 21 can rotate. That is, a certain force must be applied to the straightening handwheel 1 to make the gear ring 21 rotate, so as to avoid the straightening mechanism from deflection due to vehicle driving vibration or vibration of other equipment working on the vehicle.

[0020] like Figure 4 , 5 As shown in Figures 10 and 11, the screw assembly 3 includes a screw 31, a U-nut 32, a second bevel gear 33, a connecting seat 34, a limiting block 35, a limiting ring 36, a bearing 37, and a bearing retaining ring 38. One side of the connecting seat 34 is connected and fixed to the guide seat 4, and the other side of the connecting seat 34 is connected and fixed to the boss ring 22 of the bevel gear assembly 2. Bearings 37 are installed at both ends of the screw 31. The screw 31 is mounted on the mounting seat 34 through the bearings 37 at both ends, and then fixed in position by the bearing retaining ring 38. A second bevel gear 33 is installed inside the bearing 37 at one end of the screw 31. The second bevel gear 33 meshes with the first bevel gear 23 of the bevel gear assembly 2. A U-nut 32 is installed in the middle of the screw 31. The two U-shaped surfaces of the U-nut 32 are engaged with the two sides of the rotating block 8. A limiting block 35 is installed on the connecting seat 34, forming a groove between the connecting seat 34 and the limiting block 35. One side of the U-shaped nut 32 protrudes, and this protrusion engages in the groove between the connecting seat 34 and the limiting block 35, allowing the U-shaped nut 32 to move only along the axis of the screw 31 but preventing it from rotating. A limiting ring 36 is provided near each end of the screw 31, restricting the movement range of the U-shaped nut 32. By selecting appropriate component dimensions, such as the axial length of the U-shaped nut 32 and the distance between the two limiting rings 36, the U-shaped nut 32 can achieve a sufficient range of movement, thus enabling the straightening mechanism to have a large straightening angle while occupying a small space.

[0021] Working principle: The main shaft 6 is the fixed part that connects the alignment mechanism to the vehicle, so the positions of the horizontal shaft 5 and the pin 9 installed on the main shaft 6 are fixed. The rotating block 8 is installed on the pin 9, and the position of the rotating block 8 is also fixed accordingly.

[0022] The alignment seat 4 can rotate around the axis of the horizontal axis 5. The screw assembly 3, bevel gear assembly 2, and alignment handwheel 1, which are directly or indirectly mounted on the alignment seat 4, rotate accordingly around the axis of the horizontal axis 5. The two U-shaped surfaces of the U-nut 32 are engaged on the two sides of the rotating block 8. When the screw assembly 3 rotates with the alignment seat 4 around the axis of the horizontal axis 5, the U-nut 32 can rotate together with the rotating block 8 around the axis of the pin 9.

[0023] The alignment handwheel 1 is fixed to the gear ring 21 by screws. When the alignment handwheel 1 is rotated, the gear ring 21 drives the bevel gear 23 to rotate, which in turn drives the bevel gear 33 to rotate. The rotation of the bevel gear 33 drives the screw 31 to rotate accordingly. The U-nut 32 moves along the axis of the screw 31, and the distance from the U-nut 32 to the bearings 37 at both ends of the screw 31 changes.

[0024] like Figure 2 and 3 As shown, if the U-nut 32 moves upward, the distance between the U-nut 32 and the upper bearing 37 decreases, and the alignment seat 4 will rotate counterclockwise around the axis of the horizontal axis 5; if the U-nut 32 moves downward, the distance between the U-nut 32 and the upper bearing 37 increases, and the alignment seat 4 will rotate clockwise around the axis of the horizontal axis 5. Since the equipment is installed on the alignment seat 4 or its outer casing, when the alignment seat 4 rotates around the axis of the horizontal axis 5, it causes the equipment to rotate by a corresponding angle, thereby achieving the purpose of horizontal alignment.

[0025] The horizontal alignment mechanism of this invention is actually an application of trigonometric functions. By changing the side length of one side of a triangle, the size of its opposite angle is changed, thereby achieving horizontal alignment.

[0026] like Figure 2 , 3As shown, the triangle is formed with the center point of the horizontal axis 5, the center point of the bearing 37, and the center point of the thread of the U-nut 32 as its three vertices. The center point of the horizontal axis 5 is a fixed point, the center point of the pin 9 on the main shaft 6 is also a fixed point, and the center point of the thread of the U-nut 32 changes slightly relative to the center point of the pin 9. This slight change can be ignored, and the center point of the thread of the U-nut 32 can also be considered a fixed point. Furthermore, according to the structure of the horizontal alignment mechanism, the distance from the center point of the horizontal axis 5 to the center point of the bearing 37 is a constant, and the distance from the center point of the horizontal axis 5 to the center point of the thread of the U-nut 32 can be approximated as a constant. That is, in the triangle with the center point of the horizontal axis 5, the center point of the bearing 37, and the center point of the thread of the U-nut 32 as its three vertices, two vertices (the center point of the horizontal axis 5 and the center point of the thread of the U-nut 32) are fixed points, and the two side lengths (the distance from the center point of the horizontal axis 5 to the center point of the thread of the U-nut 32 and the distance from the center point of the horizontal axis 5 to the center point of the bearing 37) are constants. In this triangle, the distance between the center point of the U-shaped nut 32 thread and the center point of the bearing 37 changes and is a variable. When this variable changes, the position of the center point of the bearing 37 changes accordingly on the circumference with the center point of the horizontal axis 5 as the center, that is, the guide seat 4 rotates around the axis of the horizontal axis 5.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large-angle horizontal straightening mechanism, It is characterized in that The invention comprises a calibrating hand wheel (1), a bevel gear assembly (2), a screw subassembly (3), a calibrating seat (4), a transverse shaft (5), and a main shaft (6). The transverse shaft (5) is fixedly mounted on the main shaft (6) via a bayonet (7). A rotating block (8) is mounted on one end of the main shaft (6) via a pin shaft (9). Coaxial mounting holes (41) are arranged on both sides of the calibrating seat (4) in a diameter direction. The calibrating seat (4) is mounted on the transverse shaft (5) via the mounting holes (41) on both sides. One side of the screw subassembly (3) is fixedly mounted on the calibrating seat (4). The other side of the screw subassembly (3) is mounted with a bevel gear assembly (2). The calibrating hand wheel (1) is mounted on the bevel gear assembly (2).

2. The large-angle horizontal straightening mechanism according to claim 1, It is characterized in that The calibrating seat (4) has a hollow structure, and the outsides of the two coaxial mounting holes (41) are both provided with positioning surfaces (42). The two sides of the main shaft (6) are provided with positioning surfaces (61). When the calibrating seat (4) and the transverse shaft (5) are installed in place, the positioning surfaces (42) on both sides are respectively attached to the outsides of the positioning surfaces (61) on both sides.

3. The large-angle horizontal straightening mechanism according to claim 1 or 2, It is characterized in that Oil storage grooves (51) are provided on the cylindrical surfaces at both ends of the transverse axis (5), and the oil storage grooves (51) are filled with lubricating grease.

4. The large-angle horizontal straightening mechanism as claimed in claim 3, It is characterized in that The bevel gear assembly (2) comprises a gear ring (21), a boss ring (22), and a bevel gear one (23); the shaft of the bevel gear one (23) is mounted in the inner hole of the boss ring (22); the gear ring (21) and the bevel gear one (23) are fixed together by screws (24).

5. The large-angle horizontal straightening mechanism as claimed in claim 4, It is characterized in that The bevel gear assembly (2) is provided with an anti-loosening mechanism (25), the anti-loosening mechanism (25) comprising an anti-loosening cone (251), a spring (252), an anti-rotation screw (253), and a screw plug (254). The anti-loosening cone (251), the spring (252), and the screw plug (254) are installed in a small hole of the boss ring (22). A plane is provided on the outer cylindrical surface of the anti-loosening cone (251). The anti-rotation screw (253) is a flat-end screw. The anti-rotation screw (253) passes through the screw hole of the boss ring (22) and is pressed against the plane of the outer cylindrical surface of the anti-loosening cone (251).

6. The large-angle horizontal straightening mechanism according to claim 5, It is characterized in that A tooth groove is provided on the outer cylindrical surface of the gear ring (21), and the conical tooth top of the anti-loosening cone (251) is in the tooth groove of the gear ring (21).

7. The large-angle horizontal straightening mechanism according to claim 6, It is characterized in that The screw rod subassembly (3) comprises a screw rod (31), a U-shaped nut (32), a second bevel gear (33), a connecting seat (34), a limiting block (35), a limiting ring (36), a bearing (37), and a bearing pressing ring (38). One side of the connecting seat (34) is connected and fixed to the regulating seat (4), and the other side of the connecting seat (34) is connected and fixed to the boss ring (22) of the bevel gear assembly (2). Bearings (37) are installed at both ends of the screw rod (31). The screw rod (31) is installed on the mounting seat (34) through the bearings (37) and the bearing pressing ring (38) at both ends. The second bevel gear (33) is installed on the inner side of the bearing (37) at one end of the screw rod (31). The second bevel gear (33) is meshed with the first bevel gear (23) of the bevel gear assembly (2). A U-shaped nut (32) is installed in the middle of the screw rod (31). The two U-shaped surfaces of the U-shaped nut (32) are clamped on the two side surfaces of the rotating block (8).

8. The large-angle horizontal straightening mechanism according to claim 7, It is characterized in that A limiting block (35) is mounted on the connecting seat (34), a groove is formed between the connecting seat (34) and the limiting block (35), one side of the U-shaped nut (32) is protruded, and the protrusion is stuck in the groove formed between the connecting seat (34) and the limiting block (35), and a limiting ring (36) is respectively provided near the two ends of the screw rod (31).

9. The large-angle horizontal straightening mechanism according to claim 8, It is characterized in that The calibrating hand wheel (1) is mounted on the ring gear (21) of the bevel gear assembly (2).

Images