Synchronous pulley driven transmission case

Abstract

The utility model discloses a synchronous pulley slave transmission case which comprises a case body and a driving mechanism, the case body comprises a first shell and a second shell, mortise and tenon structures are arranged at the top and the bottom between the first shell and the second shell, the case body is manufactured by adopting a hollow-out treatment process, a z tensioning assembly is arranged on one side of the driving mechanism, and a z tensioning assembly is arranged on the other side of the driving mechanism. The utility model relates to the technical field of transmission cases. According to the synchronous belt wheel driven transmission box, the box body is positioned through mortises and tenons, the front box body and the rear box body are fastened through bolts, the regular hollowed-out treatment of the box body ensures the strength, facilitates observation of the abrasion condition of a belt and the synchronous belt wheel, can timely dissipate heat in the running process of the belt, prolongs the service life, reduces the weight of the box body, and reduces the cost. The device is suitable for multi-stage different-shaft synchronous linkage transmission or variable-speed linkage transmission of mechanical equipment needing light weight, the bearing is matched with the synchronous wheel, the shaft is matched with the hole key groove of the synchronous wheel, and the whole device can be used without being filled with lubricating oil like a gear reduction box.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission boxes, in particular to a synchronous pulley transmission box. Background Art

[0002] A transmission box is a mechanical device that can transmit and transform power. It is a mechanical equipment that can accelerate or decelerate the speed. It has many types and models. Different types have different uses. The inside of the box can be driven by various transmission forms such as gear drive, sprocket drive, and pulley drive. At present, most of the boxes on the market use gear drives. The box weight is not suitable for use in occasions that require lightweight, and lubricating oil needs to be added during use. The box seal is not good and it is easy to leak oil. It is not convenient to replace and disassemble the synchronous pulley. The sealed box is not easy to observe the tightness of the internal synchronous belt. It is difficult to adjust it in time when it is loose, and it is easy for the synchronous belt to jump teeth and slip. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a synchronous pulley slave transmission box, which solves the problems that the existing gear transmission box is bulky and not conducive to lightweight use, has poor sealing and is prone to oil leakage, is difficult to replace, and is difficult to self-tension in time.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions: a synchronous pulley transmission box includes a box body and a driving mechanism, the box body includes a first shell and a second shell, a mortise and tenon structure is arranged at the top and bottom between the first shell and the second shell, the box body is made by a hollowing process, and a tensioning assembly is arranged on one side of the driving mechanism;

[0005] The tensioning assembly includes a rotating shaft rotatably connected to the rear side of the box body, one end of the rotating shaft passing through the interior of the box body is fixedly connected to a cam, and the side of the cam away from the rotating shaft is fixedly connected to a fixed shaft, a tensioning wheel is fixedly connected to the surface of the fixed shaft, and one end of the rotating shaft located outside the box body is threadedly connected to a nut.

[0006] Preferably, the first shell and the second shell are threadedly connected via bolts.

[0007] Preferably, the driving mechanism includes a first synchronous pulley and a second synchronous pulley, a belt is connected for transmission between the outer surfaces of the first synchronous pulley and the second synchronous pulley, an output synchronous pulley is fixedly connected inside the second synchronous pulley, keyways are provided on the inner walls of the first synchronous pulley and the output synchronous pulley, and the inner wall of the first synchronous pulley is connected to the input shaft via a key.

[0008] Preferably, surfaces at both ends of the input shaft and the output synchronous wheel are rotatably connected to the inner wall of the box body through bearings.

[0009] Preferably, the surface of the tensioning wheel is movably connected to one side of the belt, and a triangular groove is provided on the surface of the box body in front of the tensioning assembly.

[0010] Preferably, the mortise and tenon structure includes four protrusions fixed to the front side of the second shell, and the rear side of the first shell is provided with four grooves matched with the protrusions.

[0011] Beneficial Effects

[0012] The utility model provides a synchronous pulley transmission box. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The synchronous pulley is located from the transmission box by mortise and tenon joints, and the front and rear boxes are fastened by bolts. The regular hollowing treatment of the box can not only ensure the strength but also facilitate the observation of the wear of the belt and the synchronous pulley. It can also dissipate the heat during the operation of the belt in time to increase the service life and reduce the weight of the box. It is suitable for multi-stage different-axis synchronous linkage transmission or variable speed linkage transmission of mechanical equipment that needs to be lightweight. The bearing and synchronous wheel, shaft and synchronous wheel hole keyway are matched to facilitate disassembly and replacement. The whole device does not need to be filled with lubricating oil before use like a gear reducer.

[0014] (2) The synchronous belt pulley is driven from the transmission box by loosening the nut and then driving the cam to rotate through the rotating shaft. The cam and the tensioning wheel are eccentrically arranged so that the cam cooperates with the tensioning wheel to tension to prevent the synchronous belt from skipping teeth and slipping during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the structure of the utility model;

[0016] Figure 2 It is a rear view of the structure of the utility model;

[0017] Figure 3 It is a front sectional view of the structure of the utility model;

[0018] Figure 4 It is a rear cross-sectional view of the structure of the utility model;

[0019] Figure 5 It is an exploded view of the structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the tensioning assembly structure of the utility model.

[0021] In the figure: 1. box body; 101. first shell; 102. second shell; 2. driving mechanism; 21. first synchronous pulley; 22. second synchronous pulley; 23. belt; 24. output synchronous pulley; 25. hole keyway; 26. input shaft; 27. bearing; 3. rotating shaft; 4. cam; 5. fixed shaft; 6. tensioning wheel; 7. nut; 8. bolt; 9. triangular groove; 10. protrusion; 11. groove; 12. mortise and tenon structure. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1

[0024] See also Figures 1 to 6 As shown, the utility model provides a synchronous pulley transmission box, including a box body 1 and a driving mechanism 2, the box body 1 includes a first shell body 101 and a second shell body 102, and a mortise and tenon structure 12 is arranged at the top and bottom between the first shell body 101 and the second shell body 102, and the mortise and tenon structure 12 includes four protrusions 10 fixed to the front side of the second shell body 102, and the rear side of the first shell body 101 is provided with four grooves 11 adapted to the protrusions 10, and the arrangement of the protrusions 10 and the grooves 11 improves the accuracy of the assembly of the first shell body 101 and the second shell body 102, and the self-positioning assembly is performed, and the front and rear shell bodies are fastened by bolts 8 to improve the assembly efficiency, and the box body 1 is made by a hollowing treatment process, which not only reduces the weight but also facilitates the observation of the transmission wear, and can better dissipate heat and extend the service life of the belt 23, and a tensioning assembly is arranged on one side of the driving mechanism 2;

[0025] The tensioning assembly includes a rotating shaft 3 rotatably connected to the rear side of the box body 1, one end of the rotating shaft 3 passing through the interior of the box body 1 is fixedly connected to a cam 4, and the side of the cam 4 away from the rotating shaft 3 is fixedly connected to a fixed shaft 5, and the surface of the fixed shaft 5 is fixedly connected to a tensioning wheel 6, and the end of the rotating shaft 3 located outside the box body 1 is threadedly connected to a nut 7, and then the cam 4 is driven to rotate by the rotating shaft 3, and the cam 4 and the tensioning wheel 6 are eccentrically arranged, so that the cam 4 cooperates with the tensioning wheel 6 to tension, so as to prevent problems such as synchronous belt skipping and slipping during use. After the tensioning wheel 6 is adjusted, the nut 7 is tightened to fix its position;

[0026] The first shell 101 and the second shell 102 are threadedly connected by bolts 8, the surface of the tensioning wheel 6 is movably connected to one side of the belt 23, and a triangular groove 9 is provided on the surface of the box body 1 and in front of the tensioning assembly to facilitate observation of the adjustment position of the tensioning assembly.

[0027] Embodiment 2

[0028] Based on Example 1, please refer to Figure 1 , Figure 2 and Figure 5 As shown, the driving mechanism 2 includes a first synchronous pulley 21 and a second synchronous pulley 22, a belt 23 is connected between the outer surfaces of the first synchronous pulley 21 and the second synchronous pulley 22, an output synchronous pulley 24 is fixedly connected inside the second synchronous pulley 22, the inner walls of the first synchronous pulley 21 and the output synchronous pulley 24 are provided with a hole keyway 25, the inner wall of the first synchronous pulley 21 is connected with an input shaft 26 through a key, and the synchronous pulley is easy to disassemble and replace through the cooperation of the bearing 27 and the synchronous wheel, the shaft and the synchronous wheel hole keyway 25, and the rotation speed of the other two output ends can be adjusted by changing the rotation speed of the input end, and the surfaces at both ends of the input shaft 26 and the output synchronous wheel 24 are rotatably connected to the inner wall of the box body 1 through the bearing 27.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] When in use, the housing 1 is self-positioned and assembled using the mortise and tenon structure 12, and then the first housing 101 and the second housing 102 are assembled and fixed by bolts 8. The housing 1 is regularly hollowed out to reduce weight, facilitate observation of transmission wear, and dissipate heat better. The external driving structure drives the first synchronous pulley 21 to rotate through the input shaft 26, and the first synchronous pulley 21 drives the second synchronous pulley 22 to transmit through the belt 23. The speed of the output end can be adjusted by changing the speed of the input end. The synchronous pulley is easy to disassemble and replace through the cooperation of the bearing 27 and the synchronous wheel, the shaft and the synchronous wheel hole keyway 25. During use of the belt 23, the nut 7 is loosened, and then the cam 4 is driven to rotate by the rotating shaft 3. The cam 4 and the tensioning wheel 6 are eccentrically arranged. The cam 4 drives the tensioning wheel 6 to move its position through the fixed shaft 5, so that the cam 4 cooperates with the tensioning wheel 6 to tension the belt 23 to prevent the belt 23 from skipping teeth and slipping during use.

[0031] 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.

[0032] 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 synchronous pulley transmission box, comprising a box body (1) and a driving mechanism (2), characterized in that: The box body (1) comprises a first shell (101) and a second shell (102); a mortise and tenon structure (12) is provided at the top and bottom of the first shell (101) and the second shell (102); the box body (1) is manufactured by hollowing out the process; and a tensioning assembly is provided on one side of the driving mechanism (2); The tensioning assembly comprises a rotating shaft (3) rotatably connected to the rear side of the box body (1); one end of the rotating shaft (3) passing through the interior of the box body (1) is fixedly connected to a cam (4); the side of the cam (4) away from the rotating shaft (3) is fixedly connected to a fixed shaft (5); a tensioning wheel (6) is fixedly connected to the surface of the fixed shaft (5); and one end of the rotating shaft (3) located outside the box body (1) is threadedly connected to a nut (7).

2. The synchronous pulley transmission box according to claim 1, characterized in that: The first shell (101) and the second shell (102) are threadedly connected via bolts (8).

3. The synchronous pulley slave transmission box according to claim 1, characterized in that: The driving mechanism (2) comprises a first synchronous pulley (21) and a second synchronous pulley (22); a belt (23) is connected between the outer surfaces of the first synchronous pulley (21) and the second synchronous pulley (22); an output synchronous pulley (24) is fixedly connected inside the second synchronous pulley (22); a keyway (25) is provided on the inner walls of the first synchronous pulley (21) and the output synchronous pulley (24); and an input shaft (26) is connected to the inner wall of the first synchronous pulley (21) via a key.

4. The synchronous pulley transmission box according to claim 3, characterized in that: The surfaces at both ends of the input shaft (26) and the output synchronous wheel (24) are rotatably connected to the inner wall of the box body (1) through bearings (27).

5. The synchronous pulley slave transmission box according to claim 3, characterized in that: The surface of the tension wheel (6) is movably connected to one side of the belt (23), and a triangular groove (9) is provided on the surface of the box body (1) in front of the tensioning assembly.

6. The synchronous pulley slave transmission box according to claim 1, characterized in that: The mortise and tenon structure (12) comprises four protrusions (10) fixed to the front side of the second shell (102), and the rear side of the first shell (101) is provided with four grooves (11) adapted to the protrusions (10).

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