Truss floating drive mechanism and truss

Abstract

The utility model discloses a truss floating drive mechanism and truss relates to truss equipment technical field, and it is including: the carrier plate, base, gear, fixed base, limiting rod, elastic part and drive assembly, and the base is slidably arranged on the carrier plate, and the gear rotation is arranged on the carrier plate, the fixed base is set up in one side of base, and the limiting rod is worn in the fixed base, and one end of limiting rod is set up on the carrier plate, and the elastic part is set up between the carrier plate and fixed base, the utility model uses, and the gear rotates to make walking mechanism move through drive assembly at this moment, in the moving process, if the parallelism of both sides rack appears error, the relative movement between carrier plate and base, thereby ensure that the gear is close to rack, and the gear and rack will not be jammed, and the floating design between carrier plate and base plays the role of self -adaptation, and need not manual adjustment under static, and it is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of truss equipment technology, specifically to a truss floating drive mechanism and a truss. Background Technology

[0002] With the development of industrial automation and driven by manufacturing upgrades and environmental protection policies, large-span truss floating drive mechanisms and automated truss spraying have begun to be applied to large-part spraying in the aerospace and shipbuilding industries.

[0003] However, unlike the high precision required for installing small-span trusses, large-span trusses, especially those with spans of 30 meters or more, suffer from linearly amplified parallelism errors in the rack installation on both sides due to factors such as installation errors. Actual measurement data shows that even with high-precision installation techniques, the parallelism deviation of the racks on both sides can still reach ±1.2mm or more for a 30-meter span. Furthermore, the thermal deformation length caused by the difference in solar radiation temperature for large-span trusses can reach more than 3mm. Such deviations can cause the gears and racks in traditional rigid drive mechanisms to jam.

[0004] In view of this, there is an urgent need for a truss floating drive mechanism and a truss to solve the above problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A truss floating drive mechanism includes: a carrier plate, a base, a gear, a fixed seat, a limiting rod, an elastic element, and a drive assembly. The carrier plate is slidably disposed on the base, the gear is rotatably disposed on the base, and the drive assembly is used to drive the gear to rotate.

[0008] The fixed seat is disposed on one side of the base, the limiting rod passes through the fixed seat, one end of the limiting rod is disposed on the carrier plate, the elastic element is disposed between the carrier plate and the fixed seat, and the elastic direction of the elastic element, the axial direction of the limiting rod and the sliding direction of the base are consistent.

[0009] The elastic element is a disc spring assembly, which is sleeved on the limiting rod.

[0010] An adjusting nut is fitted onto the limiting rod, and the adjusting nut is threadedly connected to the limiting rod. The adjusting nut is located on the side of the fixing seat away from the carrier plate.

[0011] The drive assembly includes a geared motor, which is mounted on the carrier plate, and the gear is located at the output end of the geared motor.

[0012] The carrier plate is provided with a movable hole, and the output end of the geared motor passes through the movable hole to the side of the carrier plate away from the base. The gear is located on the side of the carrier plate away from the base.

[0013] The base is provided with a linear slide rail, the extension direction of which is consistent with the axial direction of the limiting rod, and the carrier plate is disposed on the linear slide rail.

[0014] A truss, including the aforementioned truss floating drive mechanism.

[0015] It also includes a support structure, a traveling mechanism, and a rack. The traveling mechanism is slidably mounted on the support structure, and the rack is mounted on the support structure. The extending direction of the rack is consistent with the sliding direction of the traveling mechanism. The base is mounted on the traveling mechanism. The gear meshes with the rack. The axial direction of the limiting rod does not coincide with the extending direction of the rack.

[0016] The support structure is provided with a track, and the traveling mechanism is provided with several limiting seats. Each limiting seat is provided with a support roller and two limiting rollers. The axial direction of the support roller and the axial direction of the two limiting rollers are perpendicular to each other. The support roller is located on the side of the track close to the traveling mechanism, and the two limiting rollers are located on both sides of the track.

[0017] The support structure is provided in two parallel configurations, and the two ends of the walking mechanism are slidably mounted on the two support structures respectively.

[0018] The above-described structure of this utility model can achieve the following beneficial effects:

[0019] In use, the truss floating drive mechanism described in this embodiment is installed on both sides of the truss traveling mechanism, and the gears on both sides are respectively engaged with the racks on the two side support structures of the truss. At this time, the drive assembly drives the gears to rotate, so that the traveling mechanism moves. During the movement, if there is an error in the parallelism of the racks on both sides, the relative movement between the carrier plate and the base ensures that the gears are in close contact with the racks and that the gears and racks do not jam. The floating design between the carrier plate and the base plays an adaptive role, eliminating the need for manual adjustment in a static state, which is very convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of Embodiment 1;

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 2;

[0022] Figure 3This is a structural schematic diagram from another perspective of Embodiment 2;

[0023] Figure 4 This is a schematic diagram of the limiting seat in this embodiment.

[0024] In the diagram: 1. Carrier plate; 2. Base; 3. Gear; 4. Fixed seat; 5. Limiting rod; 6. Elastic element; 7. Adjusting nut; 8. Gear motor; 9. Linear slide rail; 10. Support structure; 11. Traveling mechanism; 12. Rack; 13. Track; 14. Limiting seat; 15. Support roller; 16. Limiting roller. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] Example 1, as Figure 1 As shown, a truss floating drive mechanism includes: a carrier plate 1, a base 2, a gear 3, a fixed seat 4, a limiting rod 5, an elastic element 6, and a drive assembly. The carrier plate 1 is slidably disposed on the base 2, the gear 3 is rotatably disposed on the base 2, and the drive assembly is used to drive the gear 3 to rotate.

[0029] The fixed seat 4 is located on one side of the base 2, the limiting rod 5 passes through the fixed seat 4, one end of the limiting rod 5 is located on the carrier plate 1, and the elastic element 6 is located between the carrier plate 1 and the fixed seat 4. The elastic direction of the elastic element 6, the axial direction of the limiting rod 5 and the sliding direction of the base 2 are consistent.

[0030] Based on the above structure, in use, the truss floating drive mechanism described in this embodiment is installed on both sides of the truss traveling mechanism (the base 2 is set on the truss traveling mechanism), and the gears 3 on both sides are respectively engaged with the racks on the two side support structures of the truss (at this time, the axial direction of the limit rod 5 does not coincide with the extension direction of the rack, and the two are best in a perpendicular relationship). At this time, the drive assembly drives the gears 3 to rotate, so that the traveling mechanism moves. During the movement, if there is an error in the parallelism of the racks on both sides, the relative movement between the carrier plate 1 and the base 2 (the elastic force of the elastic element 6 pushes the carrier plate 1 to move or the gear 3 is squeezed by the rack, so that the carrier plate 1 compresses the elastic element 6), thereby ensuring that the gear 3 is close to the rack, and the gear 3 and the rack will not jam. The floating design between the carrier plate 1 and the base 2 plays an adaptive role, which does not require manual adjustment in a static state and is very convenient.

[0031] like Figure 1 As shown, the elastic element 6 can be a disc spring assembly. The disc spring assembly is sleeved on the limiting rod 5 to limit the disc spring assembly. An adjusting nut 7 is sleeved on the limiting rod 5. The adjusting nut 7 is threadedly connected to the limiting rod 5. The adjusting nut 7 is located on the side of the fixed seat 4 away from the carrier plate 1. Thus, by turning the adjusting nut 7, the length of the limiting rod 5 between the fixed seat 4 and the carrier plate 1 can be adjusted, thereby adjusting the elastic force of the disc spring assembly.

[0032] like Figure 1 As shown, the drive assembly includes a geared motor 8, which is mounted on a carrier plate 1. A gear 3 is located at the output end of the geared motor 8. The carrier plate 1 has a movable hole, through which the output end of the geared motor 8 passes to the side of the carrier plate 1 away from the base 2. The gear 3 is located on the side of the carrier plate 1 away from the base 2. The gear 3 is driven to rotate by the geared motor 8. The geared motor 8 and the gear 3 are respectively mounted on both sides of the carrier plate 1 to avoid the geared motor 8 interfering with the installation and movement of the gear 3.

[0033] like Figure 1 As shown, in order to limit and guide the movement of the base 2, a linear slide rail 9 is provided on the base 2. The extension direction of the linear slide rail 9 is consistent with the axis of the limiting rod 5. The carrier plate 1 is placed on the linear slide rail 9. In this way, the relative movement between the base 2 and the carrier plate 1 is limited by the linear slide rail 9.

[0034] In addition to the embodiments described above, this application also has the following features: Figure 2-4 The second embodiment shown includes a truss comprising a described truss floating drive mechanism.

[0035] It also includes a support structure 10, a traveling mechanism 11, and a rack 12. The traveling mechanism 11 is slidably mounted on the support structure 10, and the rack 12 is mounted on the support structure 10. The extending direction of the rack 12 is consistent with the sliding direction of the traveling mechanism 11. The base 2 is mounted on the traveling mechanism 11. The gear 3 meshes with the rack 12. The axial direction of the limiting rod 5 does not coincide with the extending direction of the rack 12 (ideally, the axial direction of the limiting rod 5 is perpendicular to the extending direction of the rack 12).

[0036] The support structure 10 is provided with a track 13, and the traveling mechanism 11 is provided with several limit seats 14, such as... Figure 4 As shown, the limiting seat 14 is provided with a support roller 15 and two limiting rollers 16. The axial direction of the support roller 15 and the axial direction of the two limiting rollers 16 are perpendicular to each other. The support roller 15 is located on the side of the track 13 near the traveling mechanism 11, and the two limiting rollers 16 are located on both sides of the track 13. The supporting roller 15 supports the limiting seat 14, and the two limiting rollers 16 limit the horizontal position of the limiting seat 14, thereby limiting the position of the traveling mechanism 11.

[0037] To improve the stability of the walking mechanism 11, two support structures 10 are provided, which are arranged in parallel. The two ends of the walking mechanism 11 are slidably mounted on the two support structures 10 respectively, and a truss floating drive mechanism as described in the figure is provided on both sides of the walking mechanism 11 to drive both sides of the walking mechanism 11.

[0038] In summary, this application utilizes a linear guide rail assembly structure that generates constant preload and low resistance through a combination of elastic elements and limiting rods. This eliminates gaps while allowing for slight fluctuations, ensuring transmission accuracy and preventing jamming caused by system deformation.

[0039] When the truss starts operating, the geared motor drives the gears to rotate, which in turn drive the traveling mechanism to move by meshing with a fixed rack. This has the following advantages:

[0040] Eliminating backlash and compensating for deformation: The constant preload generated by the elastic element always keeps the gear pressed tightly against the working tooth surface of the rack. This effectively eliminates the backlash that may be caused by installation errors, wear, etc. in the gear and rack pair, ensuring the accuracy of transmission and bidirectional positioning, and avoiding impact and vibration during operation.

[0041] To accommodate truss deformation and parallelism errors in rack installation on both sides: In large-span trusses, due to temperature differences and load variations, the truss structure undergoes slight thermal expansion and contraction and elastic deformation. Furthermore, the parallelism of the racks installed on both sides in large spans has significant tolerances, which can lead to jamming or disengagement of the racks and gears. This floating drive mechanism, because the entire drive mechanism can move freely, coupled with the preload of the disc spring assembly, only needs to overcome the very small sliding friction resistance of the track to achieve a slight floating movement (relative movement between the carrier plate and the base). This ensures that the racks and gears are always tightly engaged, eliminating transmission gaps or the risk of jamming. It absorbs the parallelism errors caused by truss deformation and rack installation, improving operational positioning accuracy and stability.

[0042] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A truss floating drive mechanism characterized by, include: The carrier plate (1), base (2), gear (3), fixed seat (4), limiting rod (5), elastic element (6) and driving assembly are provided. The carrier plate (1) is slidably disposed on the base (2), the gear (3) is rotatably disposed on the base (2), and the driving assembly is used to drive the gear (3) to rotate. The fixed seat (4) is disposed on one side of the base (2), the limiting rod (5) passes through the fixed seat (4), one end of the limiting rod (5) is disposed on the carrier plate (1), the elastic element (6) is disposed between the carrier plate (1) and the fixed seat (4), and the elastic direction of the elastic element (6), the axial direction of the limiting rod (5) and the sliding direction of the base (2) are consistent.

2. A truss floating drive mechanism according to claim 1, characterized in that: The elastic element (6) is a disc spring assembly, which is sleeved on the limiting rod (5).

3. A truss floating drive mechanism according to claim 1, wherein: An adjusting nut (7) is fitted on the limiting rod (5). The adjusting nut (7) is threadedly connected to the limiting rod (5). The adjusting nut (7) is located on the side of the fixing seat (4) away from the carrier plate (1).

4. A truss floating drive mechanism according to claim 1, characterized in that: The drive assembly includes a geared motor (8) mounted on the carrier plate (1), and the gear (3) is mounted on the output end of the geared motor (8).

5. A truss floating drive mechanism according to claim 4, wherein: The carrier plate (1) is provided with a movable hole, and the output end of the geared motor (8) passes through the movable hole to the side of the carrier plate (1) away from the base (2). The gear (3) is provided on the side of the carrier plate (1) away from the base (2).

6. A truss floating drive mechanism according to claim 1, wherein: A linear slide rail (9) is provided on the base (2), and the extension direction of the linear slide rail (9) is consistent with the axial direction of the limiting rod (5). The carrier plate (1) is provided on the linear slide rail (9).

7. A truss characterized by: Includes the truss floating drive mechanism as described in any one of claims 1-6.

8. A truss according to claim 7, wherein: It also includes a support structure (10), a walking mechanism (11), and a rack (12). The walking mechanism (11) is slidably disposed on the support structure (10), and the rack (12) is disposed on the support structure (10). The extending direction of the rack (12) is consistent with the sliding direction of the walking mechanism (11). The base (2) is disposed on the walking mechanism (11). The gear (3) meshes with the rack (12). The axial direction of the limiting rod (5) does not coincide with the extending direction of the rack (12).

9. A truss according to claim 8, wherein: The support structure (10) is provided with a track (13), and the walking mechanism (11) is provided with a plurality of limiting seats (14). The limiting seats (14) are provided with a support roller (15) and two limiting rollers (16). The axial direction of the support roller (15) and the axial direction of the two limiting rollers (16) are perpendicular to each other. The support roller (15) is located on the side of the track (13) close to the walking mechanism (11), and the two limiting rollers (16) are located on both sides of the track (13).

10. A truss according to claim 8, wherein: There are two support structures (10), which are arranged in parallel. The two ends of the walking mechanism (11) are slidably mounted on the two support structures (10).

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