A U-bolt tightening apparatus

Abstract

The application discloses a U-shaped bolt tightening equipment, which comprises a track assembly, a walking assembly and a tightening assembly. The equipment only needs to operate the walking assembly, a rotating adjusting mechanism and a horizontal adjusting mechanism, thereby greatly reducing the operation strength. In addition, the tightening equipment can be adjusted from the first direction, the second direction, the third direction, the deflection angle and the rotating angle, so that the coaxiality of the axis of the tightening mechanism and the axis of the U-shaped bolt is ensured during the tightening, the quality of the tightening is greatly improved, and the accurate control of the difference of the tightened screw threads is realized.

Description

Technical Field

[0001] This application relates to the field of automotive assembly technology, and in particular to a U-bolt tightening device. Background Technology

[0002] See Figure 1 Leaf springs 30 are widely used in trucks, and U-bolts 10 are key components connecting leaf springs 30 and axles 20, which are crucial to the overall vehicle performance and safety. The assembly process consists of two steps: first, pre-tightening by the supplier, and then applying torque during the final assembly stage at the OEM to ensure the assembly meets standards.

[0003] To ensure the quality of the tightening assembly of U-bolts 10, four core requirements must be met: First, the bolts must not be twisted; second, the torque value must meet the specifications; third, the difference in the number of threads on each U-bolt 10 must be controlled within 3 threads and as small as possible; and fourth, the tension between each U-bolt 10 must be balanced.

[0004] Currently, the common assembly method used by OEMs is to equip the machine with two or four high-precision tightening guns, along with a power-assisted arm. During operation, the worker needs to align the tightening mechanism with the U-bolt 10 (the bolt's axis is at a certain angle to the ground), and then tighten it after the power-assisted arm is locked. This is inconvenient to operate, and it is easy to lose control and twist the nut, resulting in inconsistent quality.

[0005] Therefore, how to reduce the operational difficulty of tightening U-bolts while improving the operational quality of tightening operations has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This application proposes a U-bolt tightening device to reduce the operational difficulty of tightening U-bolts while improving the operational quality of the tightening operation.

[0007] To achieve the above objectives, this application discloses the following technical solutions:

[0008] In a first aspect, this application provides a U-bolt tightening device, including a track assembly, a traveling assembly, and a tightening assembly, wherein:

[0009] The traveling component is arranged on the track component and can move relative to the track component in a first direction;

[0010] The tightening assembly is mounted on the traveling assembly, and includes an angle adjustment mechanism, a lifting adjustment mechanism, a rotation adjustment mechanism, a leveling adjustment mechanism, and a tightening mechanism.

[0011] The fixed end of the angle adjustment mechanism is set on the walking assembly to adjust the deflection angle of the tightening mechanism's axis relative to the horizontal plane;

[0012] The fixed end of the lifting adjustment mechanism is set at the adjusting end of the angle adjustment mechanism, and the lifting end of the lifting adjustment mechanism is set at the fixed end of the rotation adjustment mechanism, so as to adjust the height of the tightening mechanism in the second direction.

[0013] The rotating end of the rotary adjustment mechanism is connected to the fixed end of the horizontal adjustment mechanism to adjust the rotation angle of the tightening mechanism;

[0014] The moving end of the horizontal adjustment mechanism is connected to the fixed end of the tightening mechanism to adjust the displacement of the tightening mechanism in a first direction and / or a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0015] In some embodiments, the track assembly includes a track support and a guide rail, the guide rail being arranged on the track support along a first direction, and the traveling assembly being able to travel on the guide rail.

[0016] In some embodiments, the walking assembly includes a walking support, a guide block, and a support plate. The guide block is disposed on the side of the walking support near the guide rail and can slide on the guide rail. The support plate is disposed on the walking support.

[0017] In some embodiments, the angle adjustment mechanism includes an angle adjustment support, an angle adjustment shaft, and an angle servo cylinder. The angle adjustment shaft is arranged on the support plate of the walking assembly along a first direction. A first side of the angle adjustment support is rotatably mounted on the angle adjustment shaft. One end of the angle servo cylinder is movably mounted on the support plate, and the other end of the angle servo cylinder is movably mounted on a second side of the angle adjustment support. The first and second sides are arranged along a third direction.

[0018] In some embodiments, the angle adjustment mechanism further includes an extension arm, one end of which is fixed to the second side of the angle adjustment support, and one end of the angle servo cylinder is movably disposed on the second side of the angle adjustment support via the extension arm.

[0019] In some embodiments, the lifting adjustment mechanism includes a gearbox, a horizontal drive shaft, and a lifting servo cylinder, with the lifting servo cylinder and gearbox fixed on an angle adjustment support; the power output end of the lifting servo cylinder is connected to the power input end of the gearbox via the horizontal drive shaft; the gearbox includes a lifting rack, which is fixed on a rotation adjustment mechanism, and the lifting rack rises or falls under the transmission action of the horizontal drive shaft and the gearbox.

[0020] In some embodiments, there are four gearboxes, each equipped with a lifting rack and two power ends; there are four horizontal drive shafts; there is one lifting servo cylinder; the four gearboxes are arranged at four corners, and the power ends of two adjacent gearboxes are connected via the horizontal drive shaft; the lifting servo cylinder is connected to one of the four horizontal drive shafts.

[0021] In some embodiments, the rotation adjustment mechanism includes a first rotating plate, a second rotating plate, a rotation adjustment slide rail, a rotation slider, and a rotation locking structure. The first rotating plate is disposed at the top of the lifting rack. One of the rotation adjustment slide rail and the rotation slider is disposed on the first rotating plate, and the other is disposed on the second rotating plate, and the two slide in cooperation to allow the second rotating plate to rotate relative to the first rotating plate. The rotation locking structure is used to restrict the rotation of the second rotating plate relative to the first rotating plate.

[0022] In some embodiments, the rotary locking structure includes a first locking friction plate, a second locking friction plate, and a rotary locking electric cylinder. The rotary locking electric cylinder is disposed on the first rotary plate, the first locking friction plate is disposed at one end of the rotary locking electric cylinder, and the second locking friction plate is disposed on the second rotary plate. When the rotary locking electric cylinder is in a first position, the first locking friction plate and the second locking friction plate abut against each other. When the rotary locking electric cylinder is in a second position, there is a preset gap between the first locking friction plate and the second locking friction plate.

[0023] In some embodiments, the horizontal adjustment mechanism includes a horizontal adjustment support, a first horizontal adjustment slide rail, a first horizontal adjustment slider, and a first horizontal locking structure. One of the first horizontal adjustment slide rail and the first horizontal adjustment slider is disposed on the side of the horizontal adjustment support near the second rotating plate, and the other of the two is disposed on the second rotating plate. The first horizontal adjustment slide rail extends along a first direction. The first horizontal locking structure is disposed at the first horizontal adjustment slide rail and can hold the first horizontal adjustment slide rail to restrict the sliding of the first horizontal adjustment slider along the first horizontal adjustment slide rail.

[0024] In some embodiments, the leveling mechanism further includes a second leveling slide rail, a second leveling slider, and a second leveling locking structure. One of the second leveling slide rail and the second leveling slider is disposed on the side of the leveling support near the tightening mechanism, and the other of the two is disposed on the tightening mechanism. The second leveling slide rail extends in a third direction. The second leveling locking structure is disposed at the second leveling slide rail and can hold the second leveling slide rail to restrict the sliding of the second leveling slider along the second leveling slide rail.

[0025] In some embodiments, the tightening mechanism includes a tightening support and four tightening modules arranged in a matrix on the tightening support to tighten the nut.

[0026] In some embodiments, the tightening mechanism further includes a first tightening slide rail structure, a first tightening transmission structure, and a first servo motor. The first tightening slide rail structure extends along a first direction and is arranged on the tightening support. Four tightening modules are arranged on the first tightening slide rail structure. The first servo motor is connected to the tightening modules through the first tightening transmission structure to adjust the spacing between two adjacent tightening modules in the first direction.

[0027] In some embodiments, the tightening mechanism further includes a second tightening slide rail structure, a second tightening transmission structure, and a second servo motor. The second tightening slide rail structure extends along a third direction and is arranged on the first tightening slide rail structure. Four tightening modules are arranged on the second tightening slide rail structure. The second servo motor is connected to the tightening modules through the second tightening transmission structure to adjust the spacing between two adjacent tightening modules in a third direction.

[0028] As can be seen from the above technical solution, when using the tightening equipment of this application, after the vehicle is in position, the angle adjustment mechanism of the tightening equipment drives the upper overall structure located above it to deflect by a corresponding angle. At this time, the rotation adjustment mechanism and the horizontal adjustment mechanism can be manually adjusted to pull the tightening mechanism below the U-bolt, and the lifting adjustment mechanism drives the upper structure to rise as a whole. When the tightening mechanism is about to contact the U-bolt, the rotation adjustment mechanism and the horizontal adjustment mechanism are manually adjusted to align the tightening mechanism with the U-bolt nut to be tightened, and the tightening operation is performed. After tightening is completed, the lifting adjustment mechanism will automatically descend, and the next cycle can begin. In the above process, only the walking component, the rotation adjustment mechanism, and the horizontal adjustment mechanism need to be operated, which greatly reduces the operational intensity. In addition, the tightening equipment of this application can be adjusted from the first direction, the second direction, the third direction, the deflection angle, and the rotation angle, thereby ensuring that the axis of the tightening mechanism is coaxial with the axis of the U-bolt during tightening, which greatly improves the tightening quality and achieves precise control of the tightening thread difference. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0030] Figure 1 A perspective view of a U-bolt connection between a leaf spring and an axle provided in an embodiment of this application;

[0031] Figure 2 A perspective view of a U-bolt tightening device provided in an embodiment of this application;

[0032] Figure 3 for Figure 1 A 3D view of the track assembly shown;

[0033] Figure 4 for Figure 1 A 3D view of the walking component shown;

[0034] Figure 5 for Figure 1 A perspective view of the tightening assembly shown;

[0035] Figure 6 for Figure 5 A 3D view of the angle adjustment mechanism shown;

[0036] Figure 7 for Figure 5 A three-dimensional diagram showing the coordination of the lifting adjustment mechanism and the rotation adjustment mechanism;

[0037] Figure 8 for Figure 5 A perspective view of the second rotating plate of the rotary adjustment mechanism shown;

[0038] Figure 9 for Figure 5 The diagram shows a perspective view of the horizontal adjustment mechanism arranged on the second rotating plate.

[0039] Figure 10 for Figure 5 A three-dimensional view of the horizontal adjustment mechanism shown;

[0040] Figure 11 for Figure 5 A three-dimensional view of the tightening mechanism shown;

[0041] Figure 12 for Figure 5 The tightening mechanism shown is a 3D view with the protective cover hidden.

[0042] The accompanying diagram is labeled as follows:

[0043] 10 - U-bolt; 20 - axle; 30 - leaf spring;

[0044] 1- Track assembly; 2- Traveling assembly; 3- Tightening assembly;

[0045] 11-Rail support; 12-Guide rail;

[0046] 21-Traveling support; 22-Guide block; 23-Handle;

[0047] 31-Angle adjustment mechanism; 311-Angle adjustment support; 312-Angle adjustment shaft; 313-Angle servo electric cylinder;

[0048] 32-Lifting and adjusting mechanism; 321-Gearbox; 3211-Lifting rack; 322-Horizontal drive shaft; 323-Lifting servo electric cylinder;

[0049] 33-Rotary adjustment mechanism; 331-First rotating plate; 332-Second rotating plate; 333-Rotary adjustment slide rail; 334-Rotary adjustment slider; 335-Rotary locking structure; 3351-First locking friction plate; 3352-Second locking friction plate; 3353-Rotary locking electric cylinder;

[0050] 34-Horizontal adjustment mechanism; 341-Horizontal adjustment support; 342-First horizontal adjustment slide rail; 343-First horizontal adjustment slider; 344-First horizontal locking structure; 345-Second horizontal adjustment slide rail; 346-Second horizontal adjustment slider; 347-Second horizontal locking structure; 348-Thrust structure;

[0051] 35-Tightening mechanism; 351-Tightening support; 352-Tightening module; 353-First tightening slide rail structure; 354-First tightening transmission structure; 355-First servo motor; 356-Second tightening slide rail structure; 357-Second tightening transmission structure; 358-Second servo motor; 3511-Tightening gun; 3522-Adjusting seat. Detailed Implementation

[0052] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0053] See Figure 1 , Figure 2 and Figure 5This application provides a U-bolt tightening device (hereinafter referred to as the tightening device), including a track assembly 1, a traveling assembly 2, and a tightening assembly 3, wherein: the traveling assembly 2 is arranged on the track assembly 1 and can move relative to the track assembly 1 in a first direction x; the tightening assembly 3 is disposed on the traveling assembly 2, and the tightening assembly 3 includes an angle adjustment mechanism 31, a lifting adjustment mechanism 32, a rotation adjustment mechanism 33, a horizontal adjustment mechanism 34, and a tightening mechanism 35, wherein the fixed end of the angle adjustment mechanism 31 is disposed on the traveling assembly 2 to adjust the deflection angle of the axis of the tightening mechanism 35 relative to the horizontal plane. The fixed end of the lifting adjustment mechanism 32 is set at the adjustment end of the angle adjustment mechanism 31, and the lifting end of the lifting adjustment mechanism 32 is set at the fixed end of the rotation adjustment mechanism 33 to adjust the height of the tightening mechanism 35 in the second direction z; the rotating end of the rotation adjustment mechanism 33 is connected to the fixed end of the horizontal adjustment mechanism 34 to adjust the rotation angle of the tightening mechanism 35; the moving end of the horizontal adjustment mechanism 34 is connected to the fixed end of the tightening mechanism 35 to adjust the displacement of the tightening mechanism 35 in the first direction x and / or the third direction y, wherein the first direction x, the second direction z, and the third direction y are perpendicular to each other.

[0054] When using the tightening device of this application, after the vehicle is in position, the angle adjustment mechanism 31 of the tightening device drives the overall mechanism located above it to deflect by a corresponding angle. At this time, the rotation adjustment mechanism 33 and the horizontal adjustment mechanism 34 can be manually adjusted to pull the tightening mechanism 35 below the U-bolt, and the lifting adjustment mechanism 32 drives the overall structure above it to rise. When the tightening mechanism 35 is about to contact the U-bolt, the rotation adjustment mechanism 33 and the horizontal adjustment mechanism 34 are manually adjusted to align the tightening mechanism 35 with the U-bolt nut to be tightened, and the tightening operation is performed. After tightening is completed, the lifting adjustment mechanism 32 will automatically descend, and the next cycle can begin. In the above process, only the walking component 2, the rotation adjustment mechanism 33, and the horizontal adjustment mechanism 34 need to be operated, which greatly reduces the operational intensity. In addition, the tightening device of this application can be adjusted in the first direction x, the second direction z, the third direction y, the deflection angle, and the rotation angle, thereby ensuring that the axis of the tightening mechanism 35 is coaxial with the axis of the U-bolt during tightening, which greatly improves the tightening quality and achieves precise control of the tightening thread difference.

[0055] Combination Figure 2 See Figure 3 The track assembly 1 is used to be arranged in the area where the U-nut is installed. The track assembly 1 is fixedly connected to the area or movably connected relative to the area. The track assembly 1 of this application includes a track support 11 and a guide rail 12. The guide rail 12 is arranged on the track support 11 along a first direction x, and the traveling assembly 2 can travel on the guide rail 12.

[0056] Combination Figure 2 See Figure 4 The traveling assembly 2 is used to support the tightening assembly 3 and carry the tightening assembly 3 to move on the track assembly 1. The traveling assembly 2 includes a traveling support 21, a guide block 22 and a support plate. The guide block 22 is located on the side of the traveling support 21 near the guide rail 12 and can slide on the guide rail 12. The support plate is located on the traveling support 21.

[0057] To facilitate operation of the walking component 2, the walking component 2 may also include a handle 23, which the operator can use to move the walking component on the track component 1.

[0058] Combination Figure 5 See Figure 6 The function of the angle adjustment mechanism 31 is to adjust the deflection angle of the tightening mechanism 35. Specifically, the angle adjustment mechanism 31 includes an angle adjustment support 311, an angle adjustment shaft 312, and an angle servo cylinder 313. The angle adjustment shaft 312 is arranged on the support plate of the walking assembly 2 along the first direction x. The first side of the angle adjustment support 311 is rotatably mounted on the angle adjustment shaft 312. One end of the angle servo cylinder 313 is movably mounted on the support plate, and the other end of the angle servo cylinder 313 is movably mounted on the second side of the angle adjustment support 311. The first and second sides are arranged along the third direction y.

[0059] When the angle servo cylinder 313 extends, the angle adjustment support 311 rotates around the angle adjustment shaft 312 under the action of the angle servo cylinder 313, and the rotation angle increases; when the angle servo cylinder 313 shortens, the angle adjustment support 311 rotates around the angle adjustment shaft 312 under the action of the angle servo cylinder 313, and the rotation angle decreases.

[0060] Furthermore, the angle adjustment mechanism 31 of this application may also include an angle adjustment mechanism 31 button. When the button is in a first position, the angle servo cylinder 313 extends, and when the button is in a second position, the angle servo cylinder 313 retracts.

[0061] In addition, this application may also include an angle controller and an angle sensor. When the rotation angle detected by the angle sensor reaches a preset angle, the angle controller controls the angle servo cylinder 313 to stop operating.

[0062] To broaden the application range of the angle servo cylinder 313, the angle adjustment mechanism 31 further includes an extension arm. One end of the extension arm is fixed to the second side of the angle adjustment support 311, and one end of the angle servo cylinder 313 is movably mounted on the second side of the angle adjustment support 311 via the extension arm. By providing the extension arm, the usable length of the angle servo cylinder 313 can be increased.

[0063] Combination Figure 5See Figure 7 The function of the lifting and adjusting mechanism 32 is to adjust the height of the tightening mechanism 35. Specifically, the lifting and adjusting mechanism 32 includes a gearbox 321, a horizontal transmission shaft 322, and a lifting servo cylinder 323. The lifting servo cylinder 323 and the gearbox 321 are fixed on the angle adjusting support 311. The power output end of the lifting servo cylinder 323 is connected to the power input end of the gearbox 321 through the horizontal transmission shaft 322. The gearbox 321 includes a lifting rack 3211, which is fixed on the rotation adjusting mechanism 33. The lifting rack 3211 rises or falls under the transmission action of the horizontal transmission shaft 322 and the gearbox 321.

[0064] It should be noted that one gearbox 321 can be driven by one lifting servo cylinder 323 through one horizontal drive shaft 322; or in some examples, two gearboxes 321 can be driven by one lifting servo cylinder 323 through one horizontal drive shaft 322; or in some examples, four gearboxes 321 can be driven by one lifting servo cylinder 323 through four horizontal drive shafts 322.

[0065] Specifically, there are four gearboxes 321, each equipped with a lifting rack 3211 and two power ends; there are four horizontal drive shafts 322; there is one lifting servo cylinder 323; the four gearboxes 321 are arranged at the four corners, and the power ends of two adjacent gearboxes 321 are connected by the horizontal drive shaft 322; the lifting servo cylinder 323 is connected to one of the four horizontal drive shafts 322.

[0066] For a gearbox 321, horizontal drive shafts 322 are installed at both power ends of the gearbox 321, and the axes of the two horizontal drive shafts 322 are perpendicular.

[0067] The lifting servo cylinder 323 operates, transmitting its rotational motion to the gearbox 321 via the horizontal transmission shaft 322. The gearbox 321 then transmits the rotational motion to the next horizontal transmission shaft 322 via another power end, and in another direction converts the rotational motion into the lifting motion of the lifting gear. This process continues until the last gearbox 321.

[0068] Therefore, the lifting adjustment mechanism 32 described above in this application only requires one lifting servo electric cylinder 323 to achieve lifting adjustment, which can reduce the use of power components and reduce the size of the tightening equipment.

[0069] Combination Figure 5 and Figure 7 See Figure 8The rotary adjustment mechanism 33 is used to adjust the rotation angle of the tightening mechanism 35. Specifically, the rotary adjustment mechanism 33 includes a first rotary plate 331, a second rotary plate 332, a rotary adjustment slide rail 333, a rotary slider, and a rotary locking structure 335. The first rotary plate 331 is disposed at the top of the lifting rack 3211; one of the rotary adjustment slide rail 333 and the rotary slider is disposed on the first rotary plate 331, and the other is disposed on the second rotary plate 332, and the two are slidably engaged so that the second rotary plate 332 rotates relative to the first rotary plate 331; the rotary locking structure 335 is used to restrict the rotation of the second rotary plate 332 relative to the first rotary plate 331.

[0070] The second rotating plate 332 is manually rotated. Under the combined action of the rotating adjustment slide rail 333 and the rotating adjustment slider 334, the second rotating plate 332 rotates relative to the first rotating plate 331. When the rotation angle is within the preset angle range, the rotation locking structure 335 operates so that the second rotating plate 332 does not rotate relative to the first rotating plate 331.

[0071] The function of the aforementioned rotary locking structure 335 is to restrict the rotation of the second rotating plate 332 relative to the first rotating plate 331. Many structures can achieve this function; in some examples of this application, one is specifically described. This rotary locking structure 335 includes a first locking friction plate 3351, a second locking friction plate 3352, and a rotary locking electric cylinder 3353. The rotary locking electric cylinder 3353 is disposed on the first rotating plate 331, the first locking friction plate 3351 is disposed at one end of the rotary locking electric cylinder 3353, and the second locking friction plate 3352 is disposed on the second rotating plate 332. When the rotary locking electric cylinder 3353 is in the first position, the first locking friction plate 3351 and the second locking friction plate 3352 abut against each other; when the rotary locking electric cylinder 3353 is in the second position, there is a preset gap between the first locking friction plate 3351 and the second locking friction plate 3352.

[0072] Combination Figure 5 See Figure 9 and Figure 10The function of the horizontal adjustment mechanism 34 is to adjust the movement of the tightening mechanism 35 on the horizontal plane. Taking the horizontal adjustment mechanism 34 as an example where it can move in one direction, the horizontal adjustment mechanism 34 includes a horizontal adjustment support 341, a first horizontal adjustment slide rail 342, a first horizontal adjustment slider, and a first horizontal locking structure 344. One of the first horizontal adjustment slide rail 342 and the first horizontal adjustment slider 343 is disposed on the side of the horizontal adjustment support 341 near the second rotating plate 332, and the other is disposed on the second rotating plate 332. The first horizontal adjustment slide rail 342 extends along a first direction x. The first horizontal locking structure 344 is disposed at the first horizontal adjustment slide rail and can hold the first horizontal adjustment slide rail 342 to restrict the sliding of the first horizontal adjustment slider 343 along the first horizontal adjustment slide rail 342. The first horizontal adjustment slide rail 342 can extend along the first direction x and also along a third direction y.

[0073] Furthermore, the horizontal adjustment mechanism 34 can move in two directions. Given that the horizontal adjustment mechanism 34 includes a horizontal adjustment support 341, a first horizontal adjustment slide rail 342, a first horizontal adjustment slider, and a first horizontal locking structure 344, the horizontal adjustment mechanism 34 may also include a second horizontal adjustment slide rail 345, a second horizontal adjustment slider 346, and a second horizontal locking structure 347. One of the second horizontal adjustment slide rail 345 and the second horizontal adjustment slider 346 is disposed on the side of the horizontal adjustment support 341 near the tightening assembly 3, and the other is disposed on the tightening assembly 3. The second horizontal adjustment slide rail 345 extends along a third direction y. The second horizontal locking structure 347 is disposed at the second horizontal adjustment slide rail and can hold the second horizontal adjustment slide rail 345 to restrict the second horizontal adjustment slider 346 from sliding along the second horizontal adjustment slide rail 345. When the first horizontal adjustment slide rail 342 extends along the first direction x, the second horizontal adjustment slide rail 345 extends along the third direction y; when the first horizontal adjustment slide rail 342 can extend along the third direction y, the second horizontal adjustment slide rail 345 can extend along the first direction x. In summary, the tightening mechanism 35 can be adjusted in both the first direction x and the third direction y.

[0074] Furthermore, in order to limit the position of the horizontal adjustment support 341, the horizontal adjustment mechanism 34 may also include a thrust structure 348.

[0075] Combination Figure 5 See Figure 11 and Figure 12 The tightening mechanism 35 is used to tighten the nut of the U-bolt. The tightening mechanism 35 may include a tightening support 351 and four tightening modules 352. The four tightening modules 352 are arranged in a matrix on the tightening support 351 to tighten the nut.

[0076] The tightening mechanism 35 described above can be used to tighten nuts for a specific type of U-bolt. To improve the applicability of the tightening device, the tightening mechanism 35 further includes a first tightening slide rail structure 353, a first tightening transmission structure 354, and a first servo motor 355. The first tightening slide rail structure 353 extends along the first direction x and is arranged on the tightening support 351. Four tightening modules 352 are arranged on the first tightening slide rail structure 353. The first servo motor 355 is connected to the tightening modules 352 through the first tightening transmission structure 354 to adjust the spacing between two adjacent tightening modules 352 in the first direction x.

[0077] The first direction x can reflect the opening orientation of the U-bolt and the arrangement direction of adjacent U-bolts. When the first direction x corresponds to the opening of the U-bolt, the tightening mechanism 35 can tighten various types of U-bolts; when the first direction x corresponds to the arrangement direction of adjacent U-bolts, the tightening mechanism 35 can be adjusted for different installation methods.

[0078] In another example of this application, the tightening mechanism 35 further includes a second tightening slide rail structure 356, a second tightening transmission structure 357, and a second servo motor 358. The second tightening slide rail structure 356 extends along the third direction y and is arranged on the first tightening slide rail structure 353. Four tightening modules 352 are arranged on the second tightening slide rail structure 356. The second servo motor 358 is connected to the tightening modules 352 through the second tightening transmission structure 357 to adjust the spacing between two adjacent tightening modules 352 in the third direction y.

[0079] It can be seen that the tightening module 352 can adjust the distance between two adjacent tightening modules 352 in the first direction x and the third direction y, respectively. This makes it applicable to different types of U-bolts and the simultaneous tightening of two U-bolts with different installation position requirements.

[0080] The tightening module 352 may include a tightening gun 3521 and an adjusting seat 3522, which cooperates with the first tightening slide rail structure 353 and / or the second tightening slide rail structure 356.

[0081] In the above context, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0082] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0083] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0084] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A U-bolt tightening device, characterized in that, Includes track assembly, travel assembly, and tightening assembly, wherein: The walking component is arranged on the track component and is movable relative to the track component in a first direction; The tightening assembly is mounted on the traveling assembly, and the tightening assembly includes an angle adjustment mechanism, a lifting adjustment mechanism, a rotation adjustment mechanism, a leveling adjustment mechanism, and a tightening mechanism. The fixed end of the angle adjustment mechanism is disposed on the walking assembly to adjust the deflection angle of the axis of the tightening mechanism relative to the horizontal plane. The fixed end of the lifting adjustment mechanism is set at the adjustment end of the angle adjustment mechanism, and the lifting end of the lifting adjustment mechanism is set at the fixed end of the rotation adjustment mechanism, so as to adjust the height of the tightening mechanism in the second direction. The rotating end of the rotary adjustment mechanism is connected to the fixed end of the horizontal adjustment mechanism to adjust the rotation angle of the tightening mechanism; The moving end of the horizontal adjustment mechanism is connected to the fixed end of the tightening mechanism to adjust the displacement of the tightening mechanism in a first direction and / or a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The U-bolt tightening device as described in claim 1, characterized in that, The track assembly includes a track support and a guide rail. The guide rail is arranged on the track support along a first direction, and the traveling assembly can travel on the guide rail.

3. The U-bolt tightening device as described in claim 2, characterized in that, The walking assembly includes a walking support, a guide block, and a support plate. The guide block is disposed on the side of the walking support near the guide rail and can slide on the guide rail. The support plate is disposed on the walking support.

4. The U-bolt tightening device as described in claim 1, characterized in that, The angle adjustment mechanism includes an angle adjustment support, an angle adjustment shaft, and an angle servo cylinder. The angle adjustment shaft is arranged along a first direction on the support plate of the walking assembly. A first side of the angle adjustment support is rotatably mounted on the angle adjustment shaft. One end of the angle servo cylinder is movably mounted on the support plate, and the other end of the angle servo cylinder is movably mounted on a second side of the angle adjustment support. The first side and the second side are arranged along the third direction.

5. The U-bolt tightening device as described in claim 4, characterized in that, The angle adjustment mechanism also includes an extension arm, one end of which is fixed to the second side of the angle adjustment support, and one end of the angle servo cylinder is movably disposed on the second side of the angle adjustment support via the extension arm.

6. The U-bolt tightening device as described in claim 4, characterized in that, The lifting and adjusting mechanism includes a gearbox, a horizontal transmission shaft, and a lifting servo cylinder. The lifting servo cylinder and the gearbox are fixed on the angle adjusting support. The power output end of the lifting servo cylinder is connected to the power input end of the gearbox via the horizontal transmission shaft. The gearbox includes a lifting rack, which is fixed on the rotation adjusting mechanism. The lifting rack rises or falls under the transmission action of the horizontal transmission shaft and the gearbox.

7. The U-bolt tightening device as described in claim 6, characterized in that, The number of gearboxes is four, and each of the four gearboxes is equipped with a lifting rack and two power ends; the number of horizontal drive shafts is four; the number of lifting servo electric cylinders is one, and the four gearboxes are arranged in a four-corner arrangement. The power ends of two adjacent gearboxes are connected by a horizontal drive shaft; the lifting servo electric cylinder is connected to one of the four horizontal drive shafts.

8. The U-bolt tightening device as described in claim 6, characterized in that, The rotation adjustment mechanism includes a first rotating plate, a second rotating plate, a rotation adjustment slide rail, a rotation slider, and a rotation locking structure. The first rotating plate is disposed at the top of the lifting rack. One of the rotation adjustment slide rail and the rotation slider is disposed on the first rotating plate, and the other is disposed on the second rotating plate, and the two slide in cooperation to allow the second rotating plate to rotate relative to the first rotating plate. The rotation locking structure is used to restrict the rotation of the second rotating plate relative to the first rotating plate.

9. The U-bolt tightening device as described in claim 8, characterized in that, The rotary locking structure includes a first locking friction plate, a second locking friction plate, and a rotary locking electric cylinder. The rotary locking electric cylinder is disposed on the first rotary plate, the first locking friction plate is disposed at one end of the rotary locking electric cylinder, and the second locking friction plate is disposed on the second rotary plate. When the rotary locking electric cylinder is in a first position, the first locking friction plate and the second locking friction plate abut against each other. When the rotary locking electric cylinder is in a second position, there is a preset gap between the first locking friction plate and the second locking friction plate.

10. The U-bolt tightening device as described in claim 9, characterized in that, The horizontal adjustment mechanism includes a horizontal adjustment support, a first horizontal adjustment slide rail, a first horizontal adjustment slider, and a first horizontal locking structure. One of the first horizontal adjustment slide rail and the first horizontal adjustment slider is disposed on the side of the horizontal adjustment support near the second rotating plate, and the other of the two is disposed on the second rotating plate. The first horizontal adjustment slide rail extends along a first direction. The first horizontal locking structure is disposed at the first horizontal adjustment slide rail and can hold the first horizontal adjustment slide rail to restrict the sliding of the first horizontal adjustment slider along the first horizontal adjustment slide rail.

11. The U-bolt tightening device as described in claim 10, characterized in that, The leveling mechanism further includes a second leveling slide rail, a second leveling slider, and a second leveling locking structure. One of the second leveling slide rail and the second leveling slider is disposed on the side of the leveling support near the tightening assembly, and the other is disposed on the tightening assembly. The second leveling slide rail extends in a third direction. The second leveling locking structure is disposed at the second leveling slide rail and can hold the second leveling slide rail to restrict the second leveling slider from sliding along the second leveling slide rail.

12. The U-bolt tightening device as described in claim 10, characterized in that, The tightening mechanism includes a tightening support and four tightening modules. The four tightening modules are arranged in a matrix on the tightening support to tighten the nuts.

13. The U-bolt tightening device as described in claim 12, characterized in that, The tightening mechanism further includes a first tightening slide rail structure, a first tightening transmission structure, and a first servo motor. The first tightening slide rail structure extends along a first direction and is arranged on the tightening support. Four tightening modules are arranged on the first tightening slide rail structure. The first servo motor is connected to the tightening modules through the first tightening transmission structure to adjust the spacing between two adjacent tightening modules in the first direction.

14. The U-bolt tightening device as described in claim 13, characterized in that, The tightening mechanism further includes a second tightening slide rail structure, a second tightening transmission structure, and a second servo motor. The second tightening slide rail structure extends along a third direction and is arranged on the first tightening slide rail structure. The four tightening modules are arranged on the second tightening slide rail structure. The second servo motor is connected to the tightening modules through the second tightening transmission structure to adjust the spacing between two adjacent tightening modules in a third direction.

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