Motor belt tensioning device of precision forging machine

Abstract

A precision forging machine motor belt tensioning device comprises a machine frame, a motor bottom plate, a motor, a driving wheel disc, a driven wheel disc and a belt, the driven wheel disc is connected with a transmission shaft in a precision forging machine, the driving wheel disc is connected to a rotating shaft of the motor and driven by the motor to rotate, and the belt is arranged on the driving wheel disc and the driven wheel disc in a sleeving mode. The motor is connected to the motor bottom plate, one end of the motor bottom plate is hinged to the rack, an adjusting through hole is formed in the other end of the motor bottom plate, a lead screw is hinged to the rack, the upper end of the lead screw is movably connected into the adjusting through hole, the lead screw is in threaded connection with two nuts, and the two nuts are located on the upper side and the lower side of the adjusting through hole respectively. The motor belt tensioning device is simple in structure, the position of the motor bottom plate is adjusted through rotation of the hinge shaft, tensioning of a belt is achieved, and the defects that a traditional motor belt tensioning device is large in occupied space and strenuous in adjustment are effectively overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of precision forging machines, and in particular relates to a motor belt tensioning device for a precision forging machine. Background Art

[0002] Belt drive is currently widely used in precision forging machines. In the belt drive system, the belt tension adjustment is very important. The motor belt tensioning devices commonly used in precision forging machines are as follows: Figure 4 As shown, it is first necessary to loosen the locking bolts 200 on the motor base plate 100, and then push the entire motor base plate 100 up and down. After the adjustment is completed, the motor base plate 100 is locked to adjust the belt tension. In this operation method, it is more laborious because the entire motor base plate 100 needs to be pushed up and down, and the space required for the overall up and down movement of the motor base plate 100 is relatively large, resulting in a waste of internal space of the precision forging machine. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model aims to provide a motor belt tensioning device for a precision forging machine.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The cam is connected to the transmission shaft of the motor, and the cam is connected to the transmission shaft of the motor to rotate by the motor. The belt is sleeved on the driving wheel and the driven wheel, and the motor is connected to the motor base plate. One end of the motor base plate is hinged to the frame, and the hinge axis of the motor base plate and the frame is parallel to the central axis of the driving wheel and the driven wheel. The motor base plate can rotate around the hinge axis to make the driving wheel approach or move away from the driven wheel. An adjusting through hole is arranged at the other end of the motor base plate, and a screw rod is hinged on the frame. The hinge axis of the frame and the screw rod is parallel to the hinge axis of the motor base plate and the frame. The upper end of the screw rod is movably connected in the adjusting through hole. Two nuts are threadedly connected to the screw rod, and the two nuts are respectively located on the upper and lower sides of the adjusting through hole, and the outer contour of the nut is larger than the adjusting through hole.

[0006] Preferably, a rotating rod is hinged at the other end of the motor base plate, a hinge axis for hinged connection between the rotating rod and the motor base plate and a hinge axis for hinged connection between the frame and the screw rod are parallel, and the adjustment through hole is arranged on the rotating rod.

[0007] Preferably, two vertical plates parallel to each other are welded to the other end of the motor bottom plate, a second through hole is formed on the vertical plate, and two ends of the rotating rod are rotatably connected to the second through holes of the two vertical plates respectively.

[0008] Preferably, a stiffening plate is extended on one side of the vertical plate toward the motor bottom plate, the stiffening plate is integrally formed with the vertical plate, and the stiffening plate is welded to the bottom of the motor bottom plate.

[0009] Preferably, two sleeves are sleeved on the screw rod, and the two sleeves are respectively located between the two nuts and the adjusting through hole, and the outer diameter of the sleeve is larger than the diameter of the adjusting through hole.

[0010] Beneficial effects of the utility model

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] When the utility model is in use, the two nuts on the upper and lower sides of the adjusting through hole are loosened, and the motor base plate is adjusted to rotate around the hinge shaft hinged to the frame, so that the driving wheel is away from the driven wheel, so that the belt connected to the driving wheel and the driven wheel is tensioned, and then the two nuts on the upper and lower sides of the adjusting through hole are tightened to fix the motor base plate. The utility model has a simple structure, and the position of the motor base plate is adjusted by rotating the hinge shaft to achieve the tensioning of the belt, which effectively solves the shortcomings of the traditional motor belt tensioning device that occupies a large space and is laborious to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the motor belt tensioning device of the precision forging machine of the utility model when being tensioned;

[0014] Figure 2 It is a structural schematic diagram of the motor belt tensioning device of the precision forging machine of the utility model when it is not tensioned;

[0015] Figure 3 for Figure 2 The cross-sectional view and partial enlarged view of the AA section;

[0016] Figure 4 It is a structural schematic diagram of an existing motor belt tensioning device. DETAILED DESCRIPTION

[0017] 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.

[0018] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" 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.

[0020] See also Figure 1-3 The utility model provides a technical solution: a motor belt tensioning device for a precision forging machine, comprising a frame 1, a motor base plate 2, a motor 3, a driving wheel disc 4, a driven wheel disc 5, and a belt 6. The driven wheel disc 5 is connected to a transmission shaft in the precision forging machine, the driving wheel disc 4 is connected to the rotating shaft of the motor 3 and is driven to rotate by the motor 3, the belt 6 is sleeved on the driving wheel disc 4 and the driven wheel disc 5, the motor 3 is connected to the motor base plate 2, one end of the motor base plate 2 is hinged to the frame 1, and the hinged shaft of the motor base plate 2 and the frame 1 is hinged to the driving wheel disc 4 and the driven wheel disc 5 is parallel to the central axis of the motor base plate 2, and the motor base plate 2 can rotate around the hinge axis to make the driving wheel 4 approach or move away from the driven wheel 5. The other end of the motor base plate 2 is provided with an adjusting through hole 21, and the frame 1 is hinged with a screw rod 7, and the hinge axis of the frame 1 and the hinge axis of the motor base plate 2 and the frame 1 are parallel, and the upper end of the screw rod 7 is movably connected in the adjusting through hole 21, and two nuts 71 are threadedly connected to the screw rod 7, and the two nuts 71 are respectively located on the upper and lower sides of the adjusting through hole 21, and the outer contour of the nut 71 is larger than the adjusting through hole 21.

[0021] When in use, loosen the two nuts 71 on the upper and lower sides of the adjusting through hole 21, adjust the motor base plate 2 to rotate around the hinge axis hinged to the frame 1, so that the driving wheel 4 is away from the driven wheel 5, thereby tensioning the belt 6 connected to the driving wheel 4 and the driven wheel 5, and then tighten the two nuts 71 on the upper and lower sides of the adjusting through hole 21 to fix the motor base plate 2. The utility model has a simple structure and can adjust the position of the motor base plate 2 by rotating the hinge axis to achieve belt tensioning, which effectively solves the shortcomings of traditional motor belt tensioning devices that occupy a large space and are laborious to adjust.

[0022] The motor base plate 2, the frame 1, and the screw rod 7 of the utility model are connected in a triangular shape. When the motor base plate 2 is adjusted to rotate around the hinge axis of the motor base plate 2 and the frame 1, the angle between the motor base plate 2 and the frame 1 gradually decreases or increases. Correspondingly, the screw rod 7 as one side of the triangle gradually shortens or lengthens, and the angle between the motor base plate 2 and the screw rod 7 also gradually decreases or increases. After the angle between the motor base plate 2 and the screw rod 7 changes, the contact surface of the nut 71 and the motor base plate 2 also forms a certain angle, resulting in a failure to achieve a good tightening effect. Further, the other end of the motor base plate 2 is hinged with a rotating rod 8, and the hinge axis of the rotating rod 8 and the motor base plate 2 is parallel to the hinge axis of the frame 1 and the screw rod 7. The adjusting through hole 21 is set on the rotating rod 8. By rotating the rotating rod 8, the angle between the motor base plate 2 and the screw rod 7 can be adjusted. The nut 71 contacts the rotating rod 8 to achieve tightening, and no angle is generated, which has a good tightening effect.

[0023] Furthermore, two parallel vertical plates 9 are welded to the other end of the motor base plate 2, and a second through hole is opened on the vertical plate 9. The two ends of the rotating rod 8 are rotatably connected to the second through holes of the two vertical plates 9, so that the rotating rod 8 is hinged at the end of the motor base plate 2.

[0024] Furthermore, a reinforcing plate 91 is extended from one side of the vertical plate 9 toward the motor bottom plate 2 . The reinforcing plate 91 is integrally formed with the vertical plate 9 and welded to the bottom of the motor bottom plate 2 , thereby enhancing the connection strength between the vertical plate 9 and the motor bottom plate 2 .

[0025] Furthermore, two sleeves 72 are sleeved on the screw rod 7, and the two sleeves 72 are respectively located between the two nuts 71 and the adjusting through hole 21. The outer diameter of the sleeve 72 is larger than the diameter of the adjusting through hole 21, and the distance between the nut 71 and the adjusting through hole 21 is lengthened to facilitate the adjustment of the nut 71, thereby avoiding the problem of blocking the wrench from entering to tighten the nut 71 when the nut 71 is between the vertical plate 9 or other obstacles.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor belt tensioning device for a precision forging machine, comprising a frame (1), a motor base plate (2), a motor (3), a driving wheel disc (4), a driven wheel disc (5), and a belt (6), wherein the driven wheel disc (5) is connected to a transmission shaft in the precision forging machine, the driving wheel disc (4) is connected to a rotating shaft of the motor (3) and is driven to rotate by the motor (3), the belt (6) is sleeved on the driving wheel disc (4) and the driven wheel disc (5), and the motor (3) is connected to the motor base plate (2), characterized in that: One end of the motor base plate (2) is hinged to the frame (1); the hinge axis of the motor base plate (2) and the frame (1) is parallel to the central axis of the driving wheel disc (4) and the driven wheel disc (5); the motor base plate (2) can rotate around the hinge axis so that the driving wheel disc (4) moves closer to or farther away from the driven wheel disc (5); the other end of the motor base plate (2) is provided with an adjustment through hole (21); a screw rod (7) is hinged to the frame (1); the hinge axis of the frame (1) and the screw rod (7) is parallel to the hinge axis of the motor base plate (2) and the frame (1); the upper end of the screw rod (7) is movably connected in the adjustment through hole (21); two nuts (71) are threadedly connected to the screw rod (7); the two nuts (71) are respectively located at the upper and lower sides of the adjustment through hole (21); the outer contour of the nut (71) is larger than the adjustment through hole (21).

2. A motor belt tensioning device for a precision forging machine according to claim 1, characterized in that: A rotating rod (8) is hingedly connected to the other end of the motor base plate (2); a hinge axis for hinged connection between the rotating rod (8) and the motor base plate (2) and a hinge axis for hinged connection between the frame (1) and the screw rod (7) are parallel; and the adjusting through hole (21) is provided on the rotating rod (8).

3. A motor belt tensioning device for a precision forging machine according to claim 2, characterized in that: Two mutually parallel vertical plates (9) are welded to the other end of the motor bottom plate (2), a second through hole is provided on the vertical plate (9), and two ends of the rotating rod (8) are rotatably connected to the second through holes of the two vertical plates (9).

4. A motor belt tensioning device for a precision forging machine according to claim 3, characterized in that: A reinforcing plate (91) is provided extending from one side of the vertical plate (9) toward the motor bottom plate (2); the reinforcing plate (91) is integrally formed with the vertical plate (9); and the reinforcing plate (91) is welded to the bottom of the motor bottom plate (2).

5. The motor belt tensioning device of a precision forging machine according to claim 2, characterized in that: Two sleeves (72) are sleeved on the screw rod (7), and the two sleeves (72) are respectively located between the two nuts (71) and the adjustment through hole (21), and the outer diameter of the sleeve (72) is greater than the diameter of the adjustment through hole (21).

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