Torque fastening device

Abstract

The utility model discloses a torque fastening device, which belongs to the technical field of pipe fitting installation, the torque fastening device comprises a plurality of bolt fastening pieces and nut fastening pieces, the bolt fastening pieces can be connected with the heads of bolts, the nut fastening pieces can be connected with nuts to fix the nuts, and each bolt fastening piece can rotate by taking itself as the circle center. And a driving assembly is arranged between the multiple bolt fasteners and can drive the multiple bolt fasteners to rotate at the same time, so that the torque of the multiple bolts and the torque of the multiple nuts are the same after the multiple bolts and the nuts are fastened. The driving assembly can drive the multiple bolt fasteners to rotate at the same time, it is accurately guaranteed that the tightening torque of each bolt and the tightening torque of each nut are consistent, therefore, the tightening strength is consistent, it is guaranteed that the multiple bolts and the multiple nuts are evenly stressed, and time and labor are saved.

Description

Technical Field

[0001] This utility model belongs to the field of wrist arm manufacturing technology, and in particular relates to a torque fastening device. Background Technology

[0002] After the pipe fittings are installed, they need to be tightened with torque to ensure a tight seal and prevent media leakage. This also prevents the pipeline system and fittings from becoming loose. During operation, the pipeline system will be subjected to vibration and pressure changes. Tightening with torque can prevent the fittings from becoming loose, avoiding leakage or failure. Furthermore, the pipe fittings should be evenly stressed to avoid excessive local stress that could cause damage.

[0003] Currently, when tightening the flanges of pipe fittings and pipe fittings, a wrench is used to tighten the bolts gradually in a diagonal sequence to ensure uniform force. The torque is increased in multiple steps until the specified torque value is reached. This method consumes a lot of time and effort, and it cannot accurately guarantee that the tightening torque of each nut is consistent, resulting in different tightening strengths.

[0004] Therefore, there is an urgent need to design a torque fastening device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a torque fastening device that has the advantage of applying the same torque to bolts simultaneously, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the specific technical solution of the torque fastening device of this utility model is as follows:

[0007] A torque fastening device includes multiple bolt fasteners and nut fasteners. The bolt fasteners can be connected to the head of a bolt, and the nut fasteners can be connected to a nut to fix the nut. Each bolt fastener can rotate around its own center to drive the bolt to rotate, so that the bolt and nut are screwed together. A drive assembly is provided between the multiple bolt fasteners. The drive assembly can drive the multiple bolt fasteners to rotate simultaneously, so that the torque after the multiple bolts and nuts are fastened is the same.

[0008] Furthermore, each bolt fastener has a first mating groove, the shape of which matches the shape of the bolt head. The bolt fastener can be inserted into the bolt head through the first mating groove, and after the first mating groove is inserted into the bolt head, the bolt fastener can drive the bolt to rotate.

[0009] Furthermore, the drive assembly includes a first gear that can rotate around itself, and a second gear that is fixedly connected to each bolt fastener. Each second gear meshes with the first gear, so that when the first gear rotates around itself, each second gear rotates synchronously around itself.

[0010] Furthermore, a rotating shaft is fixedly connected to the first gear, and the rotating shaft is driven by a power source on the robotic arm.

[0011] Furthermore, it also includes a housing, which is connected to the robotic arm. The housing has a first cavity and a second cavity, which are connected to each other. A first gear and multiple second gears are located in the first cavity, and the second cavity is used for the rotation of bolt fasteners.

[0012] Furthermore, a limiting block is fixedly connected to the bolt fastener, and a limiting groove is opened on the second cavity, with the limiting groove and the limiting block being rotatably connected.

[0013] Furthermore, the nut fastener has multiple second mating grooves, the shape of which is adapted to the shape of the nut. The nut fastener can be inserted into the nut through the second mating grooves, and after the second mating grooves are inserted into the nut, the second mating grooves fix the nut.

[0014] Furthermore, the nut fastener includes a first ring body and a second ring body, which are detachably connected and both are connected to a robotic arm.

[0015] Furthermore, the specific number of bolt fasteners and the specific number of second mating grooves correspond to the specific number of bolts and nuts.

[0016] Furthermore, both the bolt and nut fasteners are equipped with distance sensors. The distance sensors acquire the distance between the bolt and nut fasteners in the unclamped and unclamped states. The robot determines the distance the bolt and nut fasteners have moved. The bolt extension length is obtained by the difference between the distance in the unclamped and unclamped states. The bolt elongation distance is obtained by the difference between the bolt extension length and the distance the bolt and nut fasteners have moved, thereby obtaining the tightening torque value.

[0017] The present invention has the following advantages: the drive assembly can drive multiple bolt fasteners to rotate simultaneously, so that the torque of multiple bolts and nuts after tightening is the same, ensuring that multiple bolts and nuts are subjected to uniform force, and saving time and effort. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the torque fastening device of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the housing and bolt fasteners of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the drive assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first cavity and the second cavity of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the nut fastener of this utility model;

[0023] The markings in the diagram are as follows: 1. Pipe fitting; 2. Pipe accessories; 3. Bolt fastener; 31. First mating groove; 32. Limiting block; 4. Nut fastener; 41. First ring body; 42. Second ring body; 43. Second mating groove; 5. Housing; 51. First cavity; 52. Second cavity; 53. Limiting groove; 6. Drive assembly; 61. First gear; 62. Rotating shaft; 63. Second gear. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0026] The following is a reference to the appendix. Figure 1 To be continued Figure 5 This invention describes a torque fastening device.

[0027] In the automated cantilever pre-assembly production line, robots, cross-frame manipulators, laser scanning high-precision ranging equipment, and a control system, vision system, and PLC system are used to realize the feeding of tubing such as cantilever tubes, positioning tubes, and support tubes, as well as load-bearing cable seats and single-ear positioning rings of the sleeve. First, the pre-assembly information of the anchor sections to be produced is imported into the file. The system manages the production process based on the information. The tube cutting workstation automatically optimizes the cutting plan according to preset parameters to maximize the utilization of raw materials. After the cutting is completed, the cross-frame manipulator grabs the material to the chamfering workstation. The intelligent chamfering equipment is equipped with a control system and a high-precision drive device to accurately control the chamfering dimensions. After the pipes are cut and chamfered according to their angle and shape, they are picked up by a horizontal robotic arm and stored in a buffer station. At the same time, the information system accurately records the storage location. The punching and coding binding workstation can automatically identify the product and automatically adjust the position, content and format of the coding. It can also interact with other equipment for data exchange. After punching, the robot picks up the parts and performs photo inspection through a vision system. After ensuring that there are no errors, the parts are threaded into the pipe and then tightened with torque. The robotic arm picks up the tightened pipes and puts them into the line inspection workstation. Relying on line scanning technology, the surface quality, shape, size, color and other aspects are comprehensively inspected. After passing the inspection, the production is completed.

[0028] Currently, when tightening the flanges of pipe fittings and pipe fittings, a wrench is used to tighten the bolts gradually in a diagonal sequence to ensure uniform force. The torque is increased in multiple steps until the specified torque value is reached. This method consumes a lot of time and effort, and it cannot accurately guarantee that the tightening torque of each nut is consistent, resulting in different tightening strengths.

[0029] Therefore, this torque fastening device includes a housing 5, multiple bolt fasteners 3 and nut fasteners 4. The housing 5 is connected to a robot arm. The housing 5 has a second cavity 52 for the bolt fasteners 3 to rotate. The bolt fasteners 3 can be connected to the head of the bolt. The nut fasteners 4 can be connected to the nut to fix the nut. Each bolt fastener 3 can rotate around itself to drive the bolt to rotate, so that the bolt and nut are screwed together. A drive assembly 6 is provided between the multiple bolt fasteners 3. The drive assembly 6 can drive the multiple bolt fasteners 3 to rotate simultaneously, so that the torque of the multiple bolts and nuts after fastening is the same.

[0030] First, align the bolt holes of the flange of fitting 2 with the bolt holes of the flange of fitting 1, ensuring that the gasket is positioned between them. Then, the robotic arm clamps the nut fastener 4 and secures the nut. Next, the robotic arm moves the nut fastener 4 and the nut to one side of the flange of fitting 1, ensuring that each nut is aligned with the aligned bolt hole. Then, another robotic arm clamps the housing 5, and the bolt fastener 3 inside the housing 5 secures the bolt. Then, the robotic arm moves the bolt fastener 3 and the bolt to one side of the flange of fitting 2, so that the bolt fastener 3 and the bolt are positioned on the outside of the two different flanges, respectively, along with the nut fastener 4 and the nut. Then, pass the bolt shank through the bolt holes of the two flanges until the bolt shank contacts the nut. Then, activate the drive assembly 6, which drives multiple bolt fasteners 3 to rotate simultaneously. At the same time, the robotic arm connected to the bolt fastener 3 moves towards the nut, so that multiple bolts are simultaneously screwed into multiple nuts until the appropriate torque is reached. Then, the bolt fastener 3 stops rotating, and the robotic arm connected to the bolt fastener 3 stops moving towards the nut.

[0031] Regarding the connection method between the bolt fastener 3 and the bolt, preferably, each bolt fastener 3 has a first mating groove 31. The shape of the first mating groove 31 is adapted to the shape of the bolt head. The bolt fastener 3 can be inserted into the bolt head through the first mating groove 31, and after the first mating groove 31 is inserted into the bolt head, the bolt fastener 3 can drive the bolt to rotate. Figure 1 When the pipe fitting 2 is tightened in a vertical state with the pipe fitting 1, a magnetic attraction component can be provided in the first mating groove 31 to attract and fix the bolt. When the pipe fitting 2 and the pipe fitting 1 are in a horizontal or other state, the bolt can be directly engaged and fixed through the first mating groove 31. In other embodiments of this utility model, the bolt fastener 3 can also be multiple claws to clamp and fix the bolt.

[0032] The drive assembly 6 includes a first gear 61, which can rotate around itself. A second gear 63 is fixedly connected to each bolt fastener 3, and each second gear 63 meshes with the first gear 61, so that when the first gear 61 rotates around itself, each second gear 63 rotates synchronously around itself. A rotating shaft 62 is fixedly connected to the first gear 61. The rotating shaft 62 is driven by a power source on the robotic arm. A power source is set on the robotic arm that holds the housing 5. The output end of the power source is connected to the rotating shaft 62 to drive the rotating shaft 62 to rotate. The power source can be a motor. In other embodiments of this utility model, other power sources can also be used, as long as they can ensure that the rotating shaft 62 can rotate.

[0033] The housing 5 has a first cavity 51 inside, which is connected to the second cavity 52. ​​The first gear 61 and a plurality of second gears 63 are all located inside the first cavity 51, and the rotating shaft 62 connected to the first gear 61 passes through the first cavity 51 and extends to the outside of the housing 5 so as to facilitate connection with the output end of the power source.

[0034] A limiting block 32 is fixedly connected to the bolt fastener 3, and a limiting groove 53 is opened on the second cavity 52. ​​The limiting groove 53 is rotatably connected to the limiting block 32. By setting the limiting block 32 and the limiting groove 53, it is ensured that the bolt fastener can only rotate around itself and cannot slide along the second cavity 52.

[0035] Regarding the connection method between the bolt fastener 3 and the bolt, preferably, the nut fastener 4 has multiple second mating grooves 43. The shape of the second mating grooves 43 matches the shape of the nut. The nut fastener 4 can be inserted into the nut through the second mating grooves 43, and after the second mating grooves 43 are inserted into the nut, the second mating grooves 43 fix the nut. Figure 1 When the pipe fitting 2 is tightened in a vertical position to the pipe fitting 1, a magnetic attraction component can be provided in the second mating groove 43 to attract and fix the nut. When the pipe fitting 2 and the pipe fitting 1 are in a horizontal or other position, they can be directly engaged and fixed with the nut through the second mating groove 43.

[0036] Furthermore, each second mating groove 43 is provided with a through hole, which is connected to the second mating groove 43. The bolt passing through the nut is inserted through the through hole to avoid interference between the bolt and the second mating groove 43.

[0037] The nut fastener 4 includes a first ring 41 and a second ring 42, which are detachably connected and both are connected to a robotic arm. Under the gripping of the robotic arm, the first ring 41 and the second ring 42 are located on both sides of the pipe 1. Subsequently, the robotic arm drives the first ring 41 and the second ring 42, which together form the nut fastener 4. The pipe 1 is located in the through hole of the nut fastener 4. In other embodiments of this utility model, the first ring 41 and the second ring 42 can also be connected in other ways, such as hinged or plugged.

[0038] The specific number of bolt fasteners 3 and the specific number of second mating grooves 43 correspond to the specific number of bolts and nuts.

[0039] Both bolt fastener 3 and nut fastener 4 are equipped with distance sensors. The distance sensors acquire the distance between bolt fastener 3 and nut fastener 4 in the unclamped state and the unclamped state. The robot determines the distance the bolt fastener moves. The bolt extension length is obtained by the difference between the distance between the bolt fastener and nut fastener in the unclamped state and the distance between the bolt fastener and nut fastener in the unclamped state. The bolt elongation distance is obtained by the difference between the bolt extension length and the distance the bolt fastener moves, thereby obtaining the tightening torque value.

[0040] First, after the bolt and nut contact each other, the motor is started, meaning the bolt fastener 3 and nut fastener 4 are in an unclamped state. Simultaneously, the distance sensor is activated to acquire the distance between the bolt fastener 3 and nut fastener 4 in the unclamped state, thus obtaining the normal length of the bolt. Then, after the bolt is tightened, i.e., after the motor is turned off, the bolt fastener 3 and nut fastener 4 are in a tightened state. The distance sensor acquires the distance between the bolt fastener 3 and nut fastener 4 in the tightened state. The robotic arm then determines the distance the bolt fastener has moved. The difference between the distance in the unclamped state and the distance in the tightened state is used to obtain the bolt extension length. The difference between the bolt extension length and the distance the bolt fastener has moved is used to obtain the bolt elongation distance, thus obtaining the tightening torque value. The obtained tightening torque value is transmitted to the terminal for easy viewing.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A torque fastening device characterized by, The application relates to a bolt fastener (3) and a nut fastener (4), the bolt fastener (3) can be connected with the head of a bolt, the nut fastener (4) can be connected with a nut to fix the nut, each bolt fastener (3) can rotate around its own center to drive the bolt to rotate, so that the bolt is screwed with the nut, a driving assembly (6) is arranged between the bolt fasteners (3), the driving assembly (6) can drive the bolt fasteners (3) to rotate simultaneously, so that the torque of the bolt and the nut after fastening is the same.

2. The moment fastening device according to claim 1, characterized in that Each bolt fastener (3) is provided with a first matching groove (31), the shape of the first matching groove (31) is matched with the shape of the head of the bolt, the bolt fastener (3) can be inserted with the head of the bolt through the first matching groove (31), and the bolt fastener (3) can drive the bolt to rotate after the first matching groove (31) is inserted with the head of the bolt.

3. The moment fastening device according to claim 1, characterized in that The driving assembly (6) comprises a first gear (61), the first gear (61) can rotate around its own center, each second gear (63) is fixedly connected to the bolt fastener (3), and each second gear (63) is engaged with the first gear (61), so that each second gear (63) rotates around its own center synchronously when the first gear (61) rotates around its own center.

4. The moment fastening device according to claim 3, characterized in that A rotating shaft (62) is fixedly connected to the first gear (61), and the rotating shaft (62) is driven by a power source on a manipulator.

5. The moment fastening device according to claim 4, characterized in that The application further comprises a shell (5), the shell (5) is connected with the manipulator, the shell (5) is provided with a first cavity (51) and a second cavity (52), the first cavity (51) and the second cavity (52) are communicated, the first gear (61) and the second gears (63) are arranged in the first cavity (51), and the second cavity (52) is used for the rotation of the bolt fastener (3).

6. The moment fastening device according to claim 5, characterized in that A limiting block (32) is fixedly connected to the bolt fastener (3), a limiting groove (53) is formed in the second cavity (52), and the limiting groove (53) is rotationally connected with the limiting block (32).

7. The moment fastening device of claim 1, wherein The nut fastener (4) is provided with a plurality of second matching grooves (43), the shape of the second matching grooves (43) is matched with the shape of the nut, the nut fastener (4) can be inserted with the nut through the second matching grooves (43), and the second matching grooves (43) fix the nut after being inserted with the nut.

8. The moment fastening device of claim 1, wherein The nut fastener (4) comprises a first ring body (41) and a second ring body (42), the first ring body (41) and the second ring body (42) are detachably connected, and the first ring body (41) and the second ring body (42) are connected with the manipulator.

9. The moment fastening device of claim 7, wherein The specific number of the bolt fasteners (3), the specific number of the second matching grooves (43) and the specific number of the bolts and the nuts are corresponding.

10. The moment fastening device of claim 1, wherein The bolt fastener (3) and the nut fastener (4) are provided with distance sensors, the distance sensors acquire the distance of the bolt fastener (3) and the nut fastener (4) in the unfastened state and the fastened completed state, the distance that the bolt fastener (3) moves is determined by the mechanical arm, the length that the bolt extends is obtained by the difference between the distance of the bolt fastener (3) and the nut fastener (4) in the unfastened state and the distance of the bolt fastener (3) and the nut fastener (4) in the fastened completed state, the distance that the bolt elongates is obtained by the difference between the length that the bolt extends and the distance that the bolt fastener (3) moves, so that the fastening torque value is obtained.

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