Patent Publication Number: US-11035652-B1

Title: Main drive assembly positioning structure for throwing trap

Description:
BACKGROUND AND SUMMARY OF THE INVENTION 
     The present invention relates to throwing trap technology and more particularly, to a main drive assembly positioning structure, which enables the main drive assembly of the throwing trap to be pivoted and positioned through a first fixing frame and a second fixing frame, so that the main drive assembly positioning structure has the advantages of saving accessories and reducing costs. 
     The bearing seat  7  (see  FIG. 2 ) of the throwing arm drive spindle  61  of the conventional throwing trap  6  (see  FIGS. 1 and 2 ) is manufactured by the processing of a lathe, milling machine, or CNC machine. The bearing seat  7  thus processed needs to be mounted with first and second bearings  62  and  63  through a hydraulic machine (not shown), and then the throwing arm drive spindle  61  is installed into the bearing seat  7  through the hydraulic machine. Then a prive plate  64  is welded under the throwing arm drive spindle  61 , and then a sprocket  65  is installed in the throwing arm drive spindle  61 . Further assemble an upper fixing frame  8  on the throwing arm drive spindle  61 , then weld an arm mounting plate  68  on the top of the throwing arm drive spindle  61 , and then use four screws  93  to fastened four fixing holes (not shown) of the bearing seat  7  to a lower fixing frame  9  that is fixed above the main frame  60  by a combination of four sets of screws  91  and nuts  92 , and the four sets of screws  94  and nuts  95  are used to fasten the four fixing holes  81  of the upper fixing frame  8  to the main frame  60  to complete the installation operation. However, this mounting structure has the following drawbacks: 
     1. There are many accessories, such as the upper fixing frame  8 , the lower fixing frame  9 , and the bearing seat  7 , and the manufacturing cost is relatively high. 
     2. Not only there are more accessories and the installation procedure is cumbersome, it is relatively wasteful of manpower and assembly costs. 
     The present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide a main drive assembly positioning structure for throwing trap, which is so configured that the main drive assembly of the throwing trap can be pivoted and positioned through a first fixing frame and a second fixing frame, so that the main drive assembly positioning structure has the advantages of saving accessories (for example, the upper fixing frame, bearing seat and lower fixing frame can be relatively saved) and reducing costs. 
     It is another object of the present invention to provide a main drive assembly positioning structure for throwing trap, which can relatively simplify the installation process and save assembly manpower and man-hours. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIG. 1  is an exploded view of a part of a conventional throwing trap. 
         FIG. 2  is an elevational assembly view of the conventional throwing trap shown in  FIG. 1 . 
         FIG. 3  is an exploded view of the present invention. 
         FIG. 4  is an elevational assembly view of  FIG. 3 . 
         FIG. 5  is an elevational view of the first fixing member. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring to  FIGS. 3 and 4 , a main drive assembly positioning structure is used in a throwing trap  3  to pivotally position a main drive assembly  4  on a main frame  30  of the throwing trap  3 . The main drive assembly  4  comprises a throwing arm drive spindle  41 , a first bearing  42  and a second bearing  43  assembled on the throwing arm drive spindle  41 , a prive plate  44  welded to the bottom end of the throwing arm drive spindle  41 , a sprocket  45  assembled on the throwing arm drive spindle  41  above the first bearing  42  and the second bearing  43 , an arm mounting plate  46  welded to the opposing top end of the throwing arm drive spindle  41 , and a throwing arm mounted on the top side of the arm mounting plate  46 . When the sprocket  45  of the main drive assembly  4  is driven to rotate, the throwing arm drive spindle  41  is relatively driven to rotate, so that the throwing arm rotates accordingly, and the clay (not shown) placed on the throwing arm is thrown out by centrifugal force. 
     The main drive assembly positioning structure comprises a first fixing frame  1  and a second fixing frame  2 . 
     The first fixing frame  1  (see  FIGS. 3-5 ) comprises a first positioning portion  11 , a first left connection wall  12  and a first right connection wall  13  respectively connected to the opposing left and right sides of the first positioning portion  11 , a left fixing wall  14  (see  FIG. 5 ) perpendicularly connected to the first left connection wall  12 , a right fixing wall  15  perpendicularly connected to the first right connection wall  13 , a first inner semicircular arc groove  111  defined by the first positioning portion  11 , at least one first left connection hole  121  (see  FIG. 5 ) located on the first left connection wall  12 , at least one first right connection hole  131  (see  FIG. 5 ) located on the first right connection wall  13 , at least one first fixing hole  141  (see  FIG. 5 ) located on the left fixing wall  14 , at least one second fixing hole  151  (see  FIG. 5 ) located on the right fixing wall  15 , and first and second left fastening members  16 , 17  (see  FIG. 3 ) and first and second right fastening members  18 , 19  respectively mounted in the at least one first left connection hole  121 , the at least one first right connection hole  131 , the at least one first fixing hole  141  and the at least one second fixing hole  151  and fastened to respective third fixing holes  31  ( FIG. 3 ) on the left and right sides of the main frame  30  to fix the first fixing frame  1  to the main frame  30  and to keep the left fixing wall  14  and the right fixing wall  15  be attached to the left and right sides of the main frame  30  respectively. Alternatively, the left fixing wall  14  and the right fixing wall  15  can be directly welded to the left and right sides of the main frame  30 . 
     The second fixing frame  2  (see  FIGS. 3 and 4 ) comprises a second positioning portion  21 , a second left connection wall  22  and a second right connection wall  23  respectively connected to the opposing left and right sides of the second positioning portion  21 , a second inner semicircular arc groove  211  defined by the second positioning portion  21 , at least one second left connection hole  221  located on the second left connection wall  22 , at least one second right connection hole  231  located on the second right connection wall  23 , at least one first fastening member  51  and at least one second fastening member  52  (see  FIG. 3 ) for fastening the at least one second left connection hole  221  to the at least one first left connection hole  121  of the first left connection wall  12  of the first fixing frame  1 , and at least one third fastening member  53  and at least one fourth fastening member  54  (see  FIG. 3 ) for fastening the at least one second right connection hole  231  to the at least one first right connection hole  131  of the first right connection wall  13  of the first fixing frame  1 . 
     In this way, when you want to install, first assemble the throwing arm drive spindle  41  with the first bearing  42  and the second bearing  43 , then weld the prive plate  44  to the bottom end of the throwing arm drive spindle  41 . After assembling the sprocket  45  above the throwing arm drive spindle  41  and welding the arm mounting plate  46 , the assembly of the main drive assembly  4  is completed. Then one side of the second bearing  43  of the main drive assembly  4  can be pressed against the first inner semicircular arc groove  111  of the first positioning portion  11  of the first fixing frame  1 , and then the second inner semicircular arc groove  211  of the second positioning portion  21  of the second fixing frame  2  can be abutted against the other side of the second bearing  43 . Thereafter, the at least one first fastening member  51  and the at least one second fastening member  52  are used to fasten the at least one second left connection hole  221  to the at least one first left connection hole  121  of the first left connection wall  12  of the first fixing frame  1  and the at least one third fastening member  53  and the at least one fourth fastening member  54  are used to fasten the at least one second right connection hole  231  to the first right connection hole  131  of the first right connection wall  13  of the first fixing frame  1  to pivotally position the main drive assembly  4  between the first positioning portion  11  of the first fixing frame  1  and the second positioning portion  21  of the second fixing frame  2 . 
     Furthermore, the aforementioned first fixing frame  1  is made of rigid metal material or rigid plastic material, and the aforementioned second fixing frame  2  is made of rigid metal material or rigid plastic material. 
     In summary, the invention of the present invention can be summarized as having the following enhancement effects: 
     1. The main drive assembly  4  of the throwing trap  3  can be pivoted and positioned through the first fixing frame  1  and the second fixing frame  2 . At the same time, it has the advantages of saving accessories (for example, the upper fixing frame, bearing seat and lower fixing frame can be relatively saved) and reducing costs. 
     2. It can relatively simplify the installation process and save assembly manpower and man-hours.