Device for measuring fastening torque of key bolt in rotary table of space-limited product

Abstract

The utility model belongs to the technical field of bolt torque measurement, and particularly relates to a device for measuring the fastening torque of a key bolt in a rotary table of a space-limited product. Three U-shaped holes are formed in the outer end of the measuring base at intervals, the measuring base is rotationally connected with a driving shaft, a plurality of transmission shafts and a driven shaft, a shaft key is arranged outside the driving shaft, driving straight-tooth gears meshed with each other are installed outside the transmission shafts, and driven straight-tooth gears are installed outside the driven shaft. A shaft key of the driving shaft is meshed with the adjacent driving straight tooth gear, the driven straight tooth gear is meshed with the adjacent driving straight tooth gear, a lengthened connecting rod is installed at the upper end of the driving shaft, a sleeve A is installed at the lower end of the driven shaft, threads are arranged on the inner side of the sleeve A, and three U-shaped holes are used for clamping bolts on a positioning flange plate. And the sleeve A is used for sleeving and tightening the bolt on the flange plate. According to the device, the tightening force can be transmitted through meshing of a plurality of gears under the condition that the space of the rotary table is limited, and the torque is measured while the bolt is tightened.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt torque measurement, and particularly relates to a device for measuring the torque of key bolts tightened in a turntable of a product with limited space. Background Art

[0002] Currently, turntables have a compact structure and limited assembly space, making it impossible to adjust the structure to meet assembly requirements. Operators are unable to tighten and measure the torque of key bolts (critical components and key connections) on the turntable using standard tools and other technical means. Consequently, they are forced to have small operators "drill" into the narrow space and use hand tools to tighten each bolt one by one. This is time-consuming, labor-intensive, and labor-intensive. This is especially true for turntables, which come in straight or tilted styles. The latter is even more difficult to operate, and can only achieve tightening without effectively measuring torque. Because the turntable structure involves high-altitude operations, if the bolts in this area do not meet the torque requirements, there is a risk of loosening, resulting in casualties.

[0003] After the turntable is hoisted into place, the process requires tightening the 20 M16 bolts on the flange and measuring the torque (215N·m). However, the turntable structure is relatively closed, and the tightening bolts are located inside the turntable, with a small space (approximately 348-365mm). A torque wrench (typically 500mm long) cannot be used directly. Furthermore, hand tools are not available for the inclined turntable structure (there is only 22.5mm of space and no vertical working space). The operation needs to be extended to the center of the turntable or above. Currently, small operators are required to "drill" into the barrel and tighten each bolt one by one with a manual wrench, which is labor-intensive and cannot effectively monitor the torque value. Utility Model Content

[0004] The utility model provides a device for measuring the torque of key bolts tightened in a turntable of a product with limited space, which solves the above problems.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A device for measuring torque of key bolts tightened in a turntable of a space-constrained product, comprising a measuring seat, wherein the outer end of the measuring seat is provided with three U-shaped holes at intervals, and the three U-shaped holes are distributed in an isosceles triangle. The measuring seat is rotatably connected to a driving shaft, several transmission shafts and a driven shaft, the outside of the driving shaft is provided with a shaft key, the outside of each transmission shaft is installed with a driving spur gear, the outside of the driven shaft is installed with a driven spur gear, several of the driving spur gears are meshed with each other, the shaft key of the driving shaft is meshed with the adjacent driving spur gear, and the driven spur gear is meshed with the adjacent driving spur gear, the upper end of the driving shaft is installed with an extended connecting rod, the lower end of the driven shaft is installed with a sleeve A, the inner side of the sleeve A is provided with a thread, the three U-shaped holes are used to clamp the bolts on the positioning flange, and the sleeve A is used to tighten and tighten the bolts on the flange.

[0007] Through the above technical solution, the three U-shaped holes are responsible for limiting and fixing the three bolts on the flange, and sleeve A is responsible for tightening the bolts, which improves the stability of the measuring seat during the tightening process and prevents displacement of the measuring seat. The extended connecting rod cooperates with the driving shaft, several transmission shafts, and the driven shaft to extend and amplify the tightening space for the bolts on the flange. The tightening force of the bolts is transmitted externally through multiple gears, so that the bolts on the flange can be tightened one by one by simply rotating the extended connecting rod, without being restricted by the limited space. This solves the problem of the flange in the turntable structure being inconvenient to tighten due to the limited space.

[0008] Optionally, the measuring seat includes an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are arranged parallel to each other in an upper and lower direction, and the upper cover plate and the lower cover plate are both T-shaped, the two ends of the head of the T-shape of the lower cover plate are fixedly connected to the first leg and the second leg, respectively, and the tail of the T-shape of the lower cover plate is fixedly connected to the third leg, and the bottom of the first leg, the bottom of the second leg and the bottom of the third leg are all provided with the U-shaped hole.

[0009] Optionally, the first leg, the second leg and the third leg are all L-shaped, and the upper end of the first leg, the upper end of the second leg and the upper end of the third leg are all fixedly connected to the lower cover plate.

[0010] Optionally, an upper convex plate is provided in the middle of the T-shaped head of the upper cover plate, and a lower convex plate is provided in the middle of the T-shaped head of the lower cover plate, and the driven shaft is rotatably connected between the upper convex plate and the lower convex plate.

[0011] Optionally, the sleeve A is located below the lower cover plate, and the center of the driving shaft, the centers of the plurality of transmission shafts, and the center of the driven shaft are located on the same straight line and coincide with the axis of the upper cover plate and the axis of the lower cover plate.

[0012] Optionally, the center of the sleeve A and the centers of the three U-shaped holes are all located on the outer circumference of the same circle.

[0013] Optionally, a sleeve B is installed on the upper end of the driving shaft, the lower end of the extended connecting rod is inserted into the sleeve B, the inner side wall of the sleeve B is provided with a thread, and the lower end of the extended connecting rod is threadedly connected to the sleeve B.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The device in the utility model is designed by utilizing the principle of multiple sets of gear meshing to transmit tightening torque, that is, the force point and the operating point are separated, the bolts to be tightened are still on the pitch circle, and the tightening force point is extended to above the center of the pitch circle through a four-stage gear transmission (assisted by a light deep groove ball bearing, which is labor-saving and efficient). Combined with the reaction rod effect generated by its own legs and nearby bolts, the force application point is extended to the top of the rotating drum through an extended connecting rod, which solves the "confinement" of the turntable cylinder and realizes the assembly process requirements. The torque can be measured while tightening the bolts, providing sufficient assembly space for the operator.

[0016] The device in the utility model fully utilizes the characteristics of gear meshing and reliable force transmission, and adjusts the working position according to the current situation where space is limited and the design structure cannot be adjusted. One device solves three difficult points, namely: the space is limited and fast tools such as electric or pneumatic cannot be used, the manual labor intensity of using a manual wrench is high, the torque cannot be determined by a torque wrench, and there are safety hazards in torque measurement. In addition, the cost investment is low, which effectively solves the technical difficulties and safety hazards of the turntable being limited by the structural space for a long time and not meeting the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a partial cross-sectional view of the entire device in the embodiment in the main viewing direction;

[0019] Figure 2 This is a schematic diagram of the structure of the entire device in the embodiment when it is viewed from above and is used to tighten the bolts in conjunction with the flange;

[0020] Figure 3 is a perspective view of the entire device in the embodiment;

[0021] Figure 4 It is the three-dimensional structure of the turntable and flange in the embodiment. Figure I ;

[0022] Figure 5 It is the three-dimensional structure of the turntable and flange in the embodiment. Figure II .

[0023] Explanation of the accompanying symbols: 1. Upper cover plate; 2. Lower cover plate; 3. First leg; 4. Second leg; 5. Third leg; 6. U-shaped hole; 7. Driving shaft; 8. Transmission shaft; 9. Driven shaft; 10. Shaft key; 11. Driving spur gear; 12. Driven spur gear; 13. Sleeve A; 14. Sleeve B; 15. Extended connecting rod; 16. Upper convex plate; 17. Lower convex plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The embodiment of the present application discloses a device for measuring the torque of key bolts tightened in a turntable of a space-constrained product.

[0026] Example

[0027] according to Figures 1 to 5 As shown, a device for measuring the torque of key bolts tightened in a turntable of a space-constrained product includes a measuring seat, which includes an upper cover plate 1 and a lower cover plate 2. The upper cover plate 1 and the lower cover plate 2 are arranged parallel and spaced apart from each other. The upper cover plate 1 and the lower cover plate 2 are both T-shaped, and the two ends of the T-shaped head of the lower cover plate 2 are fixedly connected to the first leg 3 and the second leg 4 respectively, and the tail of the T-shaped lower cover plate 2 is fixedly connected to the third leg 5. The first leg 3, the second leg 4 and the third leg 5 are all L-shaped, and the upper end of the first leg 3, the upper end of the second leg 4 and the upper end of the third leg 5 are all fixedly connected to the lower cover plate 2. The bottom of the first leg 3, the bottom of the second leg 4 and the bottom of the third leg 5 are all provided with a U-shaped hole 6, which is used to clamp the bolts on the flange in the turntable.

[0028] An upper convex plate 16 is provided in the middle of the T-shaped head of the upper cover plate 1, and a lower convex plate 17 is provided in the middle of the T-shaped head of the lower cover plate 2. The upper convex plate 16 and the upper cover plate 1 are integrally formed, and the lower convex plate 17 and the lower cover plate 2 are integrally formed. A driven shaft 9 is rotatably connected between the upper convex plate 16 and the lower convex plate 17. A driven spur gear 12 is installed on the outside of the driven shaft 9. A sleeve A13 is fixed to the lower end of the driven shaft 9. The sleeve A13 is located below the lower cover plate 2. The center of the sleeve A13 and the centers of the three U-shaped holes 6 are all located on the outer circumference of the same circle. The inner side wall of the sleeve A13 is provided with a thread. The sleeve A13 is used to sleeve and tighten the bolts on the flange in the turntable.

[0029] A driving shaft 7 and three transmission shafts 8 are rotatably connected between the upper cover 1 and the lower cover 2. The transmission shaft 8 is located between the driving shaft 7 and the driven shaft 9. The driving shaft 7, the transmission shaft 8 and the driven shaft 9 are all perpendicular to the upper cover 1 and the lower cover 2. A shaft key 10 is installed on the outside of the driving shaft 7. A driving spur gear 11 is installed on the outside of the three transmission shafts 8. Two adjacent driving spur gears 11 are meshed with each other. The first driving spur gear 11 is meshed with the shaft key 10, and the third driving spur gear 11 is meshed with the driven spur gear 12. The center of the driving shaft 7, the center of the three transmission shafts 8, and the center of the driven shaft 9 are located on the same straight line and coincide with the axis of the upper cover 1 and the axis of the lower cover 2.

[0030] The upper end of the driving shaft 7 is sleeved with a sleeve B14, which is located above the upper cover plate 1. The upper end of the sleeve B14 is installed with an extended connecting rod 15, and the inner side wall of the sleeve B14 is provided with a thread. The lower end of the extended connecting rod 15 is inserted into the sleeve B14, and the lower end of the extended connecting rod 15 is threadedly connected to the sleeve B14. The extended connecting rod 15 drives the driving shaft 7 to rotate through the sleeve B14. The driving shaft 7 drives the three driving spur gears 11 to rotate during the rotation process. The driving spur gear 11 drives the driven spur gear 12 to rotate during the rotation process. The driven spur gear 12 drives the driven shaft 9 to rotate, and the driven shaft 9 drives the sleeve A13 to rotate, thereby tightening the bolts on the flange.

[0031] Working principle:

[0032] Place the entire device on the end face of the turntable's flange, align the three U-shaped holes 6 and sleeve A13 with the four bolts on the flange. The three U-shaped holes 6 hold the three bolts on the flange, and sleeve A13 is placed on one of the bolts. By rotating the extended connecting rod 15, the driving shaft 7 is driven to rotate. During the rotation process, the driving shaft 7 drives the three transmission shafts 8 to rotate in sequence. The transmission shaft 8 drives the driven shaft 9 to rotate. During the rotation process, the driven shaft 9 drives the sleeve A13 to rotate. During the rotation process, the sleeve A13 drives the bolts it is mounted on to rotate and tighten. Tighten the bolts on the flange in this way.

[0033] A torque wrench is installed at the upper end of the extended connecting rod 15, so that when the extended connecting rod 15 is rotated to tighten the bolts on the flange, the torque of the bolts on the flange can be determined and measured.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for measuring torque during the tightening of key bolts in a space-constrained product turntable, characterized by: It includes a measuring seat, the outer end of the measuring seat is provided with three U-shaped holes at intervals, the three U-shaped holes are distributed in an isosceles triangle, the measuring seat is rotatably connected to a driving shaft, several transmission shafts and a driven shaft, the outside of the driving shaft is provided with a shaft key, the outside of each transmission shaft is installed with a driving spur gear, the outside of the driven shaft is installed with a driven spur gear, several of the driving spur gears are meshed with each other, the shaft key of the driving shaft is meshed with the adjacent driving spur gear, the driven spur gear is meshed with the adjacent driving spur gear, the upper end of the driving shaft is installed with an extended connecting rod, the lower end of the driven shaft is installed with a sleeve A, the inner side of the sleeve A is provided with a thread, the three U-shaped holes are used to clamp the bolts on the positioning flange, and the sleeve A is used to tighten and tighten the bolts on the flange.

2. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 1, characterized in that: The measuring seat includes an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are arranged parallel to each other in an upper and lower direction, and both the upper cover plate and the lower cover plate are T-shaped. The first leg and the second leg are fixedly connected to the two ends of the head of the T-shape of the lower cover plate, and the third leg is fixedly connected to the tail of the T-shape of the lower cover plate. The U-shaped hole is formed at the bottom of the first leg, the bottom of the second leg, and the bottom of the third leg.

3. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 2, characterized in that: The first leg, the second leg and the third leg are all L-shaped, and the upper ends of the first leg, the second leg and the third leg are all fixedly connected to the lower cover plate.

4. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 2, characterized in that: An upper convex plate is provided in the middle of the T-shaped head of the upper cover plate, and a lower convex plate is provided in the middle of the T-shaped head of the lower cover plate. The driven shaft is rotatably connected between the upper convex plate and the lower convex plate.

5. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 2, characterized in that: The sleeve A is located below the lower cover plate, and the center of the driving shaft, the centers of the plurality of transmission shafts, and the center of the driven shaft are located on the same straight line and coincide with the axis of the upper cover plate and the axis of the lower cover plate.

6. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 1, characterized in that: The center of the sleeve A and the centers of the three U-shaped holes are all located on the outer circumference of the same circle.

7. The device for measuring torque during tightening of key bolts in a space-constrained product turntable according to claim 1, characterized in that: The upper end of the driving shaft is sleeved with a sleeve B, the lower end of the extended connecting rod is inserted into the sleeve B, the inner side wall of the sleeve B is provided with a thread, and the lower end of the extended connecting rod is threadedly connected to the sleeve B.

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