CN116214417A

CN116214417A - Hand-held variable hole site multiaxis bolt moment fastener

Info

Publication number: CN116214417A
Application number: CN202310262766.6A
Authority: CN
Inventors: 孙宁宁; 王双; 李振国; 韩峰涛; 庹华; 于文进; 张雷; 刘宁宁; 姜涛
Original assignee: Rokae Shandong Intelligent Technology Co ltd
Current assignee: Rokae Shandong Intelligent Technology Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-06-06

Abstract

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, and relates to equipment for simultaneously fastening a plurality of bolts. The handheld variable hole site multi-shaft bolt moment fastener is convenient to use and high in efficiency. The hand-held variable hole site multiaxial bolt moment fastener comprises a power input mechanism, wherein the power input mechanism drives a driving shaft of a power transmission mechanism to rotate, a diameter-dividing fixed disc is connected to the driving shaft, a plurality of driven shafts are connected to the diameter-dividing fixed disc and rotate along with the driving shaft, the driven shafts are connected with a diameter-changing mechanism, and a moment output shaft of the diameter-changing mechanism is connected with a moment fastening structure.

Description

Hand-held variable hole site multiaxis bolt moment fastener

Technical Field

The invention relates to the technical field of assembly tools, in particular to a handheld variable hole site multi-shaft bolt moment fastener.

Background

The manufacturing industry is the basis of the development of all industries, no equipment and industrial chain exist in the manufacturing industry, and living production is greatly restricted.

The bolt fastening is the most common fastening mode in manufacturing, has the advantages of higher precision, easy disassembly, good adaptability, high standardization degree and the like, and is most economical and widely applied in modern manufacturing. However, in industrial production, a single screw fastening mode is adopted for bolt assembly, manual or electric tightening is needed, and a torque wrench is needed to change to carry out secondary torque fastening on the tightened screws in order to meet the fastening requirement. Typically, a forming apparatus such as an industrial robot includes hundreds or thousands of screw-fastening sites, which makes screw-fastening the most time-consuming task known as manufacturing. Although single-shaft power tools provide improved efficiency over manual approaches, the approach is limited to the number of bolts.

Disclosure of Invention

The invention aims to solve the technical problem of providing a handheld variable hole position multi-shaft bolt moment fastener which is convenient to use and high in efficiency.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener which comprises a power input mechanism, wherein the power input mechanism drives a driving shaft of a power transmission mechanism to rotate, a diameter-dividing fixed disc is connected to the driving shaft, a plurality of driven shafts are connected to the diameter-dividing fixed disc and rotate along with the driving shaft, the driven shafts are connected with a diameter-changing mechanism, and a moment output shaft of the diameter-changing mechanism is connected with a moment fastening structure.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, wherein a driving shaft comprises a power input shaft, the power input shaft is connected with a power input end of a power input mechanism, a diameter dividing fixed disc is arranged on the outer side of the power input shaft, and a plurality of dividing hole grooves are formed in the diameter dividing fixed disc along the circumferential direction and used for installing a driven shaft.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, wherein a driven shaft comprises a power output shaft, and the power output shaft and a power input shaft are driven through gears.

The invention discloses a handheld variable hole position multi-shaft bolt moment fastener, wherein a threaded end of a power output shaft is fixed in an indexing hole groove of a diameter-dividing fixed disc.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, wherein a variable diameter mechanism comprises an input end variable diameter chute support, a power output shaft of a driven shaft drives the input end variable diameter chute support to rotate, a plurality of first rotating rods are arranged on the input end variable diameter chute support, the other ends of the first rotating rods are fixed on a rotating rod sliding support, a plurality of second rotating rods are additionally arranged on the rotating rod sliding support, and the second rotating rods pass through the rotating rod fixing support and are then arranged on the output end variable diameter chute support.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, wherein a variable diameter mechanism comprises a shell, wherein the shell is arranged on the outer side of a rotating rod fixing support saddle and is used for fixing the rotating rod fixing support saddle and a second rotating rod.

The invention discloses a handheld variable hole position multi-shaft bolt moment fastener, wherein the moment fastening structure comprises a moment fastener and a spanner, circumferential rollers are uniformly distributed around the moment fastener, a sliding barrel with a cylindrical inner wall is arranged at the top of the spanner, and the sliding barrel and the rollers are concentrically matched and installed.

The invention discloses a handheld variable hole position multi-shaft bolt moment fastener, wherein the included angle between a roller and a main shaft of the moment fastener is 45 degrees.

The invention discloses a handheld variable hole site multi-shaft bolt moment fastener, wherein the power input mechanism is an electric drill or manual input.

The handheld variable hole site multi-axis bolt moment fastener is different from the prior art in that the handheld variable hole site multi-axis bolt moment fastener adopts a power transmission mechanism, can adjust and adapt to different specifications including different bolt sizes, uniform circle diameters, uniform quantity and other specification conditions in a variable diameter, dividing plate, moment fastening and other modes, can screw a plurality of bolts on one end face at a time and give moment, realizes the function of inputting and outputting at one end, can fasten a plurality of bolts at the same time, and greatly improves the production efficiency.

The hand-held variable hole site multi-axis bolt moment tightener of the present invention is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a handheld variable hole position multiple-axis bolt torque fastener of the present invention;

FIG. 2 is a schematic diagram of the structure of the driving shaft in the hand-held variable hole site multiple-shaft bolt torque fastener of the present invention;

FIG. 3 is a schematic view of the structure of the driven shaft of the hand-held variable hole site multiple-shaft bolt torque fastener of the present invention;

FIG. 4 is a schematic diagram of the power transmission mechanism of the handheld variable hole position multiple-shaft bolt torque fastener of the invention;

FIG. 5 is a schematic view of the diameter-changing mechanism of the hand-held hole-changing multi-shaft bolt torque fastener of the present invention;

FIG. 6 is a schematic structural view of a torque tightening structure in the handheld variable hole position multiple-shaft bolt torque tightening device of the present invention;

the labels in the figures are: 11-electric drill; 12-a power transmission mechanism; 13-a reducing mechanism; 14-a torque-fastening mechanism; 21-a power input shaft; 22-a power input end rolling bearing; 23-a fixed disc with a split diameter; 24-shaft sleeve; 25-flat keys; 26-a driving straight-tooth cylindrical gear; 27-a first gear shim; 28-shaft end fastening bolts; 31-fixing the nut; 32-rolling bearings; 33-driven spur gear; 34-a power take-off shaft; 51-a fixed rolling bearing of the power output shaft; 52-an input end reducing chute support; 53-left part of the housing; 54-a second rotating rod; 55-shaft end fixing bolts; 56-an output end reducing chute support; 57-moment output shaft; 58-a second gear shim; 59-a rotating rod fixing support; 510-a rotating rod sliding support; 511-the right part of the housing; 61-moment fastener; 62-wrench.

Detailed Description

The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

As shown in FIG. 1, the handheld variable hole site multi-shaft bolt torque fastener comprises a power input mechanism, a power transmission mechanism 12, a variable diameter mechanism 13 and a torque fastening mechanism 14 which are connected in sequence. The power input mechanism transmits power to a plurality of output ends through the power transmission mechanism 12, the reducing mechanism 13 is used for adapting the distance and the number of bolts, and the torque fastening mechanism 14 idles after reaching a given torque so as to achieve the torque required by screwing the bolts.

In this embodiment, the power input mechanism is an electric drill 11; in other embodiments, the power input mechanism may also be a manual power input.

As shown in fig. 2 to 4, the power transmission mechanism 12 includes a driving shaft and a driven shaft. The driving shaft comprises a power input shaft 21, and a diameter-dividing fixed disc 23 is sleeved on the power input shaft 21. A power input end rolling bearing 22 is arranged between the shaft body of the power input shaft 21 and the diameter-dividing fixed disc 23, so that the diameter-dividing fixed disc 23 can rotate around the power input shaft 21. The fixed disk 23 is provided with a plurality of indexing holes and grooves along the circumferential direction. The power input shaft 21 is fixedly connected with the driving straight spur gear 26 through the flat key 25, so that the driving straight spur gear 26 rotates along with the power input shaft 21. The driving straight-tooth cylindrical gear 26 and the outer side of the shaft body of the diameter-dividing fixed disc 23 are provided with a shaft sleeve 24, and the shaft sleeve 24 is used for realizing axial positioning of the diameter-dividing fixed disc 23. The end of the power input shaft 21 is provided with a first gear washer 27 and a shaft end fastening bolt 28, and the first gear washer 27 contacts with the side surface of the driving straight-tooth cylindrical gear 26 to complete the axial fixation of the power input shaft 21.

The driven shaft includes a power output shaft 34, and the power output shaft 34 is connected to the driven spur gear 33 by a key. The driven spur gear 33 is meshed with the driving spur gear 26 and rotates with the driving shaft. The threaded end of the power output shaft 34 extends into the indexing hole groove of the split-diameter fixed disk 23 and is fixed by the fixed nut 31 and the rolling bearing 32. When the driving shaft rotates, the driven shaft and the driven gear rotate along with the driving shaft, and the indexing fixed disc is contacted with the outer ring of the rolling bearing 32 and kept fixed.

The working principle of the power input mechanism is as follows: when the electric drill 11 or the manual power torque is input, the power input shaft 21 transmits power to the power output shaft 34 through gear transmission, and the power output shaft 34 can be provided with the power output shafts 34 with the same number as the bolts according to the number of the bolts to be fastened on the indexing fixed disc, so that the single-input multi-power output function is realized.

As shown in fig. 5, the reducing mechanism 13 includes an input-end reducing chute holder 52, and the power output shaft 34 is keyed to the input-end reducing chute holder 52 through a power output shaft fixed rolling bearing 51. A washer and bolt are mounted to the bottom of the input end variable diameter chute support 52 to secure the power take off shaft 34. One end of the plurality of first rotating rods is mounted on the input end reducing chute support 52, and the other end of the first rotating rods is fixedly mounted on the rotating rod sliding support 510. The second rotating rods 54 are fixedly mounted on the rotating rod sliding support 510, the rod bodies of the second rotating rods 54 are fixedly mounted on the rotating rod fixing support 59, and the tail ends of the second rotating rods 54 are mounted in the output end reducing sliding groove support 56. The torque output shaft 57 is mounted on the output end reducing chute support 56 through the shaft end fixing bolt 55 and the second gear spacer 58. The reducing mechanism 13 further includes a housing, and the housing left portion 53 and the housing right portion 511 are fixedly coupled by bolts, and the rotating lever fixing bracket 59 and the second rotating lever 54 are fixed to the housing. In this embodiment, the number of the first rotating lever and the second rotating lever 54 is 4.

The transmission principle of the reducing mechanism 13 is as follows: when the power output shaft 34 rotates, the input end reducing chute support 52 rotates with the rotation, the first rotating rod of the input end rotates along with the rotation of the input end reducing chute support 52, and the single rotating rod reciprocates in a straight line in each chute; the second rotating rod 54 at the output end synchronously moves in the rotating rod sliding support 510 and the rotating rod fixing support 59 to drive the second rotating rod 54 at the output end to synchronously rotate; the output second rotary rod 54 rotates the output variable diameter chute support 56, thereby converting power from the power take-off shaft 34 to the torque take-off shaft 57. When it is desired to change the distance of the extension of the turning lever, the distance of the torque output shaft 57 from the power input shaft 21 can be changed by moving the turning lever sliding support 510 to accommodate the tightening of bolts of different distances.

As shown in fig. 6, the torque tightening structure includes a torque fastener 61 and a wrench 62. The torque fastener 61 is installed at the lower part of the torque output shaft 57, and circumferential rollers 45 degrees with respect to the main shaft of the torque fastener 61 are uniformly distributed around the torque fastener 61. The top of 62 spanners is provided with a sliding cylinder with a cylindrical inner wall, and the sliding cylinder and the roller are concentrically matched and installed. In this embodiment, the wrench 62 has a hexagonal head for receiving a bolt.

When the torque output shaft 57 rotates, the torque fastener 61 rotates along with the torque output shaft, the circumferential rollers on the torque fastener 61 start to rotate, roller supporting force in the 45-degree direction and rolling force perpendicular to the 45-degree direction are generated under friction with the sliding cylinder, the roller supporting force in the 45-degree direction is balanced by the roller supporting part, therefore, the circumferential rollers generate rolling force perpendicular to the 45-degree direction on the sliding cylinder, the rolling force drives the hexagonal wrench to rotate and move upwards in a spiral mode, and after the rotating direction is adjusted, the hexagonal wrench is driven to move downwards in a spiral mode, and accordingly tightness of bolts is achieved. By adjusting the friction force between the roller and the slide cylinder, a torque force equivalent to the specification of the bolt can be set, and when the torque force is exceeded, the roller starts to slip, thereby realizing the fastening of the bolt torque.

The handheld variable hole site multi-shaft bolt moment fastener adopts the power transmission mechanism, can adjust and adapt to different specifications including different bolt sizes, uniform circle diameters, uniform quantity and other specification conditions by means of diameter changing, dividing plate, moment fastening and the like, can screw a plurality of bolts on one end face at a time and give moment, realizes the function of inputting and outputting at one end, can fasten a plurality of bolts at the same time, and greatly improves the production efficiency; the angle, the distance and the number of the fasteners can be conveniently adjusted by adjusting the installation positions of the reducing mechanism and the dividing disc, so that the adaptability is enhanced; the invention has compact structure, modularized design and strong expandability.

While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. A handheld variable hole site multiaxis bolt moment fastener which characterized in that: the power transmission mechanism comprises a power input mechanism, wherein the power input mechanism drives a driving shaft of the power transmission mechanism to rotate, a diameter dividing fixed disc is connected to the driving shaft, a plurality of driven shafts are connected to the diameter dividing fixed disc and rotate along with the driving shaft, and a torque output shaft of the diameter changing mechanism is connected with a torque fastening structure.

2. The hand-held variable hole site multiple axis bolt torque fastener of claim 1, wherein: the driving shaft comprises a power input shaft, the power input shaft is connected with a power input end of the power input mechanism, the diameter dividing fixed disc is arranged on the outer side of the power input shaft, and a plurality of dividing hole grooves are formed in the diameter dividing fixed disc along the circumferential direction and used for installing the driven shaft.

3. The hand-held variable hole site multiple axis bolt torque fastener of claim 2, wherein: the driven shaft comprises a power output shaft, and the power output shaft and the power input shaft are in gear transmission.

4. A hand-held variable hole site multiple axis bolt torque fastener as claimed in claim 3, wherein: the threaded end of the power output shaft is fixed in the indexing hole groove of the diameter-dividing fixed disc.

5. The hand-held variable hole site multiple axis bolt torque fastener of claim 1, wherein: the reducing mechanism comprises an input end reducing chute support, the power output shaft of the driven shaft drives the input end reducing chute support to rotate, a plurality of first rotating rods are arranged on the input end reducing chute support, the other ends of the first rotating rods are fixed on the rotating rod sliding support, a plurality of second rotating rods are additionally arranged on the rotating rod sliding support, and the second rotating rods pass through the rotating rod fixing support and then are arranged on the output end reducing chute support.

6. The hand-held variable hole site multiple axis bolt torque fastener of claim 5, wherein: the reducing mechanism comprises a shell, wherein the shell is arranged on the outer side of the rotating rod fixing support, and the rotating rod fixing support and the second rotating rod are fixed.

7. The hand-held variable hole site multiple axis bolt torque fastener of claim 1, wherein: the torque fastening structure comprises a torque fastener and a wrench, wherein circumferential rollers are uniformly distributed around the torque fastener, a sliding barrel with a cylindrical inner wall is arranged at the top of the wrench, and the sliding barrel and the rollers are concentrically matched and installed.

8. The hand-held variable hole site multiple axis bolt torque fastener of claim 7, wherein: the included angle between the roller and the main shaft of the moment fastener is 45 degrees.

9. The hand-held variable hole site multiple axis bolt torque fastener of claim 1, wherein: the power input mechanism is an electric drill or manual input.