Intelligent torque verification and monitoring platform

Abstract

The utility model discloses an intelligent torque verification and monitoring platform which is composed of a moving trolley, an electric wrench verification device with a counter-force arm, a floating connecting device and an electric wrench verification device without a counter-force arm. The bottom of the electric wrench verification device with the counter-force arm is installed on the moving trolley through a floating connecting device, so that the electric wrench verification device with the counter-force arm can freely swing and can be kept horizontal in a natural state; the verification device for the electric wrench without the counter-force arm is installed on the moving trolley. According to the utility model, through the design of the positioning structure, the clamping structure and the elastic telescopic structure, the lateral bending moment and impact in the verification process of the electric torque wrench are eliminated, and the verification precision and the operation quality of the wrench are improved; meanwhile, the checking device and the trolley body are in floating connection, so that the situation that the trolley shakes due to the fact that torque is transmitted to the trolley in the wrench checking process is effectively prevented, alignment of the wrench and the checking device is more convenient, and the problem that the checking precision of an electric wrench is unstable in a traditional mode is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of torque calibration and monitoring, in particular to an intelligent torque calibration and monitoring platform. Background Art

[0002] At present, there are similar torque monitoring devices on the market for torque monitoring and management of bolt tightening during the assembly process of EMUs, locomotives, and vehicles. The torque monitoring devices are mainly in the form of fixed-station type and mobile trolley type. The equipment uses a static torque sensor or a dynamic torque sensor.

[0003] However, these forms of torque monitoring equipment have their own characteristics and defects. For example, the fixed workstation type is not suitable for workstations with long production lines and where the torque wrench cannot be removed at will; the static torque sensor is not suitable for the calibration of electric wrenches; the equipment using dynamic torque sensors has no targeted design, and the coaxiality of the sensor and the torque wrench cannot be guaranteed during the torque calibration process, which will introduce lateral bending moment and impact and cannot guarantee the calibration accuracy. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides an intelligent torque calibration and monitoring platform for bolt tightening monitoring and management systems used in EMU depots, locomotive depots, vehicle depots, and locomotive factories during vehicle production, assembly, or overhaul assembly, solving the calibration accuracy problem of electric torque wrenches for torque monitoring during vehicle assembly and overhaul. Through the design of positioning structure, clamping structure, and elastic telescopic structure, the lateral bending moment and impact during the calibration process of the electric torque wrench are eliminated, the calibration accuracy of the wrench is improved, and the operation quality of the electric torque wrench is improved; at the same time, the calibration device and the car body are connected in a floating manner, which effectively prevents the torque from being transmitted to the trolley during the wrench calibration process, causing the trolley to shake, and makes it more convenient to align the wrench with the calibration device, effectively solving the problem of unstable calibration accuracy of electric wrenches in traditional methods.

[0005] The utility model is implemented as follows: an intelligent torque calibration and monitoring platform, which is composed of a mobile trolley, an electric wrench calibration device with a reaction arm, a floating connection device, and an electric wrench calibration device without a reaction arm;

[0006] The bottom of the electric wrench calibration device with reaction arm is installed on the mobile trolley through a floating connection device, so that the electric wrench calibration device with reaction arm can swing freely and remain horizontal in a natural state; the electric wrench calibration device with reaction arm is a box-type structure, and a first positioning through hole is provided at one end of the box body, and a circular boss coaxial with the first torque sensor is provided at the first positioning through hole, and the circular boss cooperates with the circular hole on the wrench anti-reaction steel plate to realize the centering of the wrench; the periphery of the circular boss is provided with a resistance plate with a rectangular groove for realizing the torsion resistance of the wrench, and the first clamps for clamping the wrench are respectively installed on the resistance plates on both sides of the rectangular groove; a first square hole is provided at the other end of the box body, and a first torque sensor, a first simulation bolt and a first spring are provided in the box body, the first torque sensor is connected to one end of the first simulation bolt, and the first square long rod at the other end of the first simulation bolt is inserted into the first square hole and cooperates with the first square hole to realize the torsion resistance of the first simulation bolt; the first spring is sleeved on the first square long rod to realize the telescopic reset of the first torque sensor and the first simulation bolt;

[0007] The electric wrench calibration device without reaction arm is installed on a mobile trolley, including a mounting seat, a second positioning through hole is provided at the top of the mounting seat, a circular groove coaxial with the second torque sensor is provided at the second positioning through hole, and the circular groove cooperates with the circular outer shell of the output end of the wrench to realize the centering of the wrench; resistance rods for realizing the torsion resistance of the wrench are provided on the mounting seat on both sides of the periphery of the circular groove, and a second clamp for clamping the wrench is installed on the mounting seat; a second square hole is provided at the bottom end of the mounting seat, and a second torque sensor, a second simulation bolt and a second spring are provided in the mounting seat, the second torque sensor is connected to one end of the second simulation bolt, and a second square long rod at the other end of the second simulation bolt is inserted into the second square hole and cooperates with the second square hole to realize the torsion resistance of the second simulation bolt; the second spring is sleeved on the second square long rod to realize the telescopic reset of the second torque sensor and the second simulation bolt.

[0008] In the above technical solution, preferably, the floating connection device includes a cross universal joint coupling, a third spring and an adjusting screw, the top end of the cross universal joint coupling is installed on the electric wrench calibration device with a reaction arm, and the bottom end is installed on the mobile trolley; at least three adjusting screws are installed around the bottom of the cross universal joint coupling, the third spring is sleeved on the adjusting screw, one end of the third spring abuts against the nut of the adjusting screw, and the other end of the third spring abuts against the bottom surface of the box of the electric wrench calibration device with a reaction arm, so that the electric wrench calibration device with a reaction arm remains horizontal in a natural state.

[0009] In the above technical solution, preferably, the mobile cart includes a caster assembly located at the bottom of the mobile cart and a touch screen assembly located above the mobile cart, the caster assembly consists of 4 universal wheels and 2 fixed wheels, the 2 universal wheels are located at the rear side of the bottom of the mobile cart, the 2 universal wheels are located in the middle of the bottom of the mobile cart, and the 2 fixed wheels are located at the front side of the bottom of the mobile cart.

[0010] In the above technical solution, preferably, a first guide structure is arranged in the middle of the box body, a first guide hole coaxial with the first torque sensor is opened on the first guide structure, the first simulation bolt is installed in the first guide hole and is slidably connected with the first guide hole, so as to realize the centering of the first torque sensor and the first simulation bolt.

[0011] In the above technical solution, preferably, a second guide structure is arranged in the middle of the mounting seat, and a second guide hole coaxial with the second torque sensor is opened on the second guide structure. The second simulation bolt is installed in the second guide hole and is slidably connected with the second guide hole to realize the centering of the second torque sensor and the second simulation bolt.

[0012] The advantages and positive effects of the utility model are:

[0013] (1) The calibration device of the utility model ensures that the coaxiality of the dynamic torque sensor and the electric torque wrench is less than 0.5 by designing a positioning structure; the impact during the calibration of the electric wrench is eliminated by designing a clamping structure; the calibration device can adaptively simulate the length change during the bolt tightening process by designing an elastic telescopic and guiding structure; the lateral bending moment and impact during the calibration of the electric torque wrench are eliminated by designing a positioning structure, a clamping structure, an elastic telescopic and guiding structure, thereby improving the calibration accuracy of the wrench and the operation quality of the electric torque wrench.

[0014] (2) The calibration device and the vehicle body of the utility model adopt a floating connection, which effectively prevents the torque from being transmitted to the trolley and causing the trolley to shake during the wrench calibration process, and makes it easier to align the wrench and the calibration device; at the same time, the calibration device remains horizontal in a natural state.

[0015] (3) The mobile trolley of the utility model adopts a 6-wheel design, which effectively solves the pain point that the distance between the calibrated wrenches is far and inconvenient to move. The trolley is flexible in movement and can easily cross the track, which facilitates the on-site operations of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the intelligent torque calibration and monitoring platform provided by an embodiment of the utility model;

[0017] Figure 2 A front view of the intelligent torque calibration and monitoring platform provided by an embodiment of the utility model;

[0018] Figure 3 A side view of the intelligent torque calibration and monitoring platform provided by an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the structure of an electric wrench calibration device with a reaction arm and a floating connection device provided in an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the structure of an electric wrench calibration device without a reaction arm provided in an embodiment of the utility model;

[0021] Figure 6 A schematic diagram of the structure of a calibrated electric wrench with a reaction arm provided in an embodiment of the utility model;

[0022] Figure 7 A schematic diagram of the structure of an embodiment of the utility model for calibrating an electric wrench without a reaction arm.

[0023] In the figure: 1, mobile trolley; 11, universal wheel; 12, fixed wheel;

[0024] 2. Electric wrench calibration device with reaction arm; 21. Box; 211. First positioning through hole; 212. Round boss; 213. First square hole; 22. Resistance plate; 221. Rectangular groove; 23. First clamp; 24. First simulation bolt; 241. First square long rod; 25. First torque sensor; 26. First spring; 27. First guide structure; 271. First guide hole;

[0025] 3. Electric wrench calibration device without reaction arm; 31. Mounting seat; 311. Second positioning through hole; 312. Circular groove; 313. Second square hole; 32. Resistance rod; 33. Second clamp; 34. Second simulation bolt; 341. Second square long rod; 35. Second torque sensor; 36. Second spring; 37. Second guide structure; 371. Second guide hole;

[0026] 4. Floating connection device; 41. Cross universal joint coupling; 42. Third spring; 43. Adjusting screw; 431. Nut. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1 to Figure 5 The embodiment of the utility model provides an intelligent torque calibration and monitoring platform, which is composed of a mobile trolley 1, an electric wrench calibration device with a reaction arm 2, a floating connection device 4, and an electric wrench calibration device without a reaction arm 3.

[0031] The mobile trolley 1: as a mobile carrier of the platform, the body components include: caster assembly, profile frame, sheet metal drawer, door, power supply assembly, electric control panel assembly, touch screen assembly, aluminum alloy panel, etc. The caster assembly is located at the bottom of the mobile trolley 1, and the touch screen assembly is located above the mobile trolley 1. The caster assembly consists of 4 universal wheels 11 and 2 fixed wheels 12. The 2 universal wheels 11 are located at the rear side of the bottom of the mobile trolley 1, the 2 universal wheels 11 are located in the middle of the bottom of the mobile trolley 1, and the 2 fixed wheels 12 are located at the front side of the bottom of the mobile trolley 1. The caster assembly adopts the method of 4 universal wheels 11 and 2 fixed wheels 12. On the basis of the traditional 4 caster movement, by adding 2 middle universal wheels 11, the trolley can easily cross the track during the operation, and the trolley can move and rotate freely.

[0032] The bottom of the electric wrench calibration device with reaction arm 2 is installed on the mobile trolley 1 through a floating connection device 4, so that the electric wrench calibration device with reaction arm 2 can swing freely and remain horizontal in a natural state.

[0033] The electric wrench calibration device 2 with reaction arm is a box-type structure, and a first positioning through hole 211 is provided at one end of the box body 21, and a circular boss 212 coaxial with the first torque sensor 25 is provided at the first positioning through hole 211, and the circular boss 212 cooperates with the circular hole on the wrench anti-reaction steel plate to realize the centering of the wrench; the periphery of the circular boss 212 is provided with a resistance plate 22 with a rectangular groove 221 for realizing the torsion resistance of the wrench, and the first clamps 23 for clamping the wrench are respectively installed on the resistance plates 22 on both sides of the rectangular groove 221; a first square hole 213 is provided at the other end of the box body 21, and the first square hole 213 is a through square hole; a first torque sensor 25, a first simulation bolt 24 and a first spring 26 are arranged in the box body 21, and the first torque sensor 25 is connected to one end of the first simulation bolt 24 Next, specifically, the square head of the first torque sensor 25 is inserted into the square hole of the first simulation bolt 24 and fixed by a pin to prevent it from falling off; the first square long rod 241 at the other end of the first simulation bolt 24 is inserted into the first square hole 213 and cooperates with the first square hole 213 to achieve the torsion resistance of the first simulation bolt 24; the first spring 26 is sleeved on the first square long rod 241 to achieve the telescopic and resetting of the first torque sensor 25 and the first simulation bolt 24; a first guide structure 27 is arranged in the middle of the box body 21, and a first guide hole 271 coaxial with the first torque sensor 25 is opened on the first guide structure 27, and the first simulation bolt 24 is installed in the first guide hole 271 and is slidably connected with the first guide hole 271 to achieve the centering of the first torque sensor 25 and the first simulation bolt 24.

[0034] The electric wrench calibration device with reaction arm 2: as the core mechanism of the platform, it is the core component of torque calibration. It is a box-type structure, one end of which is equipped with a circular boss 212 to cooperate with the circular hole on the wrench anti-reaction steel plate to achieve the centering of the wrench, and the rectangular groove 221 of the resistance plate 22 is used to achieve the anti-torsion of the wrench, and the wrench is clamped by the first clamp 23. The other end cooperates with the first square long rod 241 on the rear side of the first simulation bolt 24 through the first square hole 213 to achieve the anti-torsion of the first simulation bolt 24. The first spring 26 and the first guide structure 27 are used in the middle to realize the free extension, retraction, reset and centering of the first torque sensor 25 and the first simulation bolt 24.

[0035] The electric wrench calibration device 3 without reaction arm is installed on the mobile trolley 1. The electric wrench calibration device 3 without reaction arm includes a mounting seat 31, a second positioning through hole 311 is arranged at the top of the mounting seat 31, a circular groove 312 coaxial with the second torque sensor 35 is arranged at the second positioning through hole 311, and the circular groove 312 cooperates with the circular shell of the output end of the wrench to realize the centering of the wrench; resistance rods 32 for realizing the torsion resistance of the wrench are arranged on the mounting seat 31 on both sides of the outer periphery of the circular groove 312, and a second clamp 33 for clamping the wrench is installed on the mounting seat 31; a second square hole 313 is arranged at the bottom of the mounting seat 31, and the second square hole 313 is a through square hole; the mounting seat A second torque sensor 35, a second simulation bolt 34 and a second spring 36 are arranged in the mounting seat 31. The second torque sensor 35 is connected to one end of the second simulation bolt 34. Specifically, the square head of the second torque sensor 35 is inserted into the square hole of the second simulation bolt 34 and fixed by a pin to prevent it from falling off. The second square long rod 341 at the other end of the second simulation bolt 34 is inserted into the second square hole 313 and cooperates with the second square hole 313 to achieve the torsion resistance of the second simulation bolt 34. The second spring 36 is sleeved on the second square long rod 341 to achieve the telescopic reset of the second torque sensor 35 and the second simulation bolt 34. A second guide structure 37 is arranged in the middle of the mounting seat 31. A second guide hole 371 coaxial with the second torque sensor 35 is opened on the second guide structure 37. The second simulation bolt 34 is installed in the second guide hole 371 and is slidably connected with the second guide hole 371 to achieve the centering of the second torque sensor 35 and the second simulation bolt 34.

[0036] Electric wrench calibration device 3 without reaction arm: As the core mechanism of the platform, it is the core component of torque calibration. The circular groove 312 is set at one end to cooperate with the circular shell of the output end of the wrench to achieve the centering of the wrench, the anti-torsion of the wrench is achieved through the resistance rod 32, and the wrench is clamped by the second clamp 33. The other end cooperates with the second square long rod 341 on the rear side of the second simulation bolt 34 through the second square hole 313 to achieve the anti-torsion of the second simulation bolt 34. The second spring 36 and the second guide structure 37 are used in the middle to realize the free extension, retraction, reset and centering of the second torque sensor 35 and the second simulation bolt 34.

[0037] The floating connection device 4 includes a cross universal joint coupling 41, a third spring 42 and an adjusting screw 43. The top of the cross universal joint coupling 41 is mounted on the electric wrench calibration device 2 with a reaction arm, and the bottom is mounted on the mobile trolley 1. At least three adjusting screws 43 are installed around the bottom of the cross universal joint coupling 41. The third spring 42 is sleeved on the adjusting screw 43. One end of the third spring 42 abuts against the nut 431 of the adjusting screw 43, and the other end of the third spring 42 abuts against the bottom surface of the box 21 of the electric wrench calibration device 2 with a reaction arm, so that the electric wrench calibration device 2 with a reaction arm remains horizontal in a natural state. The compression amount of the third spring 42 can be adjusted by turning the nut 431.

[0038] Floating connection device 4: as a position adjustment mechanism of the electric wrench calibration device with reaction arm 2, it is a connection component between the electric wrench calibration device with reaction arm 2 and the mobile trolley 1. The electric wrench calibration device with reaction arm 2 can swing freely through the cross universal joint coupling 41. In this embodiment, four sets of third springs 42 + adjusting screws 43 are used to keep the electric wrench calibration device with reaction arm 2 horizontal in a natural state.

[0039] The specific working process of the utility model is as follows:

[0040] (1) When checking the electric wrench with reaction arm, first push the torque monitoring platform to the appropriate position, adjust the position of the wrench and the checking device, align the two, and tighten the first clamp 23 to perform the check. Figure 6 shown.

[0041] (2) When checking the electric wrench without reaction arm, first place the wrench between the two resistance rods 32, align them with the checking device, and then press the second clamp 33 to check. Figure 7 shown.

[0042] The calibration device of the utility model ensures that the coaxiality of the dynamic torque sensor and the electric torque wrench is less than 0.5 by designing a positioning structure; eliminates the impact during the calibration of the electric wrench by designing a clamping structure; enables the calibration device to adaptively simulate the length change during the bolt tightening process by designing an elastic telescopic and guiding structure; eliminates the lateral bending moment and impact during the calibration of the electric torque wrench by designing a positioning structure, a clamping structure, an elastic telescopic and guiding structure, thereby improving the calibration accuracy of the wrench and the operation quality of the electric torque wrench.

[0043] The calibration device and the vehicle body are connected in a floating manner, which effectively prevents the torque from being transmitted to the trolley during the wrench calibration process, causing the trolley to shake, and makes it easier to align the wrench with the calibration device; at the same time, the calibration device remains horizontal in a natural state. The mobile trolley 1 adopts a 6-wheel design, which effectively solves the pain point that the calibrated wrenches are far apart and inconvenient to move. The trolley is flexible and can easily cross the track, which facilitates the on-site operations of the workers.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An intelligent torque calibration and monitoring platform, characterized by: It consists of a mobile trolley, an electric wrench calibration device with a reaction arm, a floating connection device, and an electric wrench calibration device without a reaction arm; The bottom of the electric wrench calibration device with reaction arm is installed on the mobile trolley through a floating connection device, so that the electric wrench calibration device with reaction arm can swing freely and remain horizontal in a natural state; the electric wrench calibration device with reaction arm is a box-type structure, and a first positioning through hole is provided at one end of the box body, and a circular boss coaxial with the first torque sensor is provided at the first positioning through hole, and the circular boss cooperates with the circular hole on the wrench anti-reaction steel plate to realize the centering of the wrench; the periphery of the circular boss is provided with a resistance plate with a rectangular groove for realizing the torsion resistance of the wrench, and the first clamps for clamping the wrench are respectively installed on the resistance plates on both sides of the rectangular groove; a first square hole is provided at the other end of the box body, and a first torque sensor, a first simulation bolt and a first spring are provided in the box body, the first torque sensor is connected to one end of the first simulation bolt, and the first square long rod at the other end of the first simulation bolt is inserted into the first square hole and cooperates with the first square hole to realize the torsion resistance of the first simulation bolt; the first spring is sleeved on the first square long rod to realize the telescopic reset of the first torque sensor and the first simulation bolt; The electric wrench calibration device without reaction arm is installed on a mobile trolley, including a mounting seat, a second positioning through hole is provided at the top of the mounting seat, a circular groove coaxial with the second torque sensor is provided at the second positioning through hole, and the circular groove cooperates with the circular outer shell of the output end of the wrench to realize the centering of the wrench; resistance rods for realizing the torsion resistance of the wrench are provided on the mounting seat on both sides of the periphery of the circular groove, and a second clamp for clamping the wrench is installed on the mounting seat; a second square hole is provided at the bottom end of the mounting seat, and a second torque sensor, a second simulation bolt and a second spring are provided in the mounting seat, the second torque sensor is connected to one end of the second simulation bolt, and a second square long rod at the other end of the second simulation bolt is inserted into the second square hole and cooperates with the second square hole to realize the torsion resistance of the second simulation bolt; the second spring is sleeved on the second square long rod to realize the telescopic reset of the second torque sensor and the second simulation bolt.

2. The intelligent torque calibration and monitoring platform according to claim 1 is characterized in that: The floating connection device includes a cross universal joint coupling, a third spring and an adjusting screw. The top end of the cross universal joint coupling is installed on the electric wrench calibration device with a reaction arm, and the bottom end is installed on the mobile trolley. At least three adjusting screws are installed around the bottom of the cross universal joint coupling. The third spring is sleeved on the adjusting screw. One end of the third spring abuts against the nut of the adjusting screw, and the other end of the third spring abuts against the bottom surface of the box of the electric wrench calibration device with a reaction arm, so that the electric wrench calibration device with a reaction arm remains horizontal in a natural state.

3. The intelligent torque calibration and monitoring platform according to claim 1 is characterized in that: The mobile cart includes a caster assembly located at the bottom of the mobile cart and a touch screen assembly located above the mobile cart. The caster assembly consists of 4 universal wheels and 2 fixed wheels. The 2 universal wheels are located at the rear side of the bottom of the mobile cart, the 2 universal wheels are located in the middle of the bottom of the mobile cart, and the 2 fixed wheels are located at the front side of the bottom of the mobile cart.

4. The intelligent torque calibration and monitoring platform according to claim 1 is characterized in that: A first guide structure is arranged in the middle of the box body, and a first guide hole coaxial with the first torque sensor is opened on the first guide structure. The first simulation bolt is installed in the first guide hole and is slidably connected with the first guide hole to realize centering of the first torque sensor and the first simulation bolt.

5. The intelligent torque calibration and monitoring platform according to claim 1 is characterized in that: A second guide structure is arranged in the middle of the mounting seat, and a second guide hole coaxial with the second torque sensor is opened on the second guide structure. The second simulation bolt is installed in the second guide hole and is slidably connected with the second guide hole to realize centering of the second torque sensor and the second simulation bolt.

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