Mechanical design product model test platform

Abstract

The utility model relates to the technical field of mechanical product design, and discloses a mechanical design product model test platform which comprises a motor, the output end of the motor is fixedly connected with a first straight rod, the mechanical design product model test platform further comprises a second straight rod fixedly connected to one end of the first straight rod, and a fixing ring is fixedly connected to the connecting portion of the first straight rod and the second straight rod. At least one telescopic rod which is annularly and uniformly arranged is inserted into the fixing ring, one end of each telescopic rod is fixedly connected with an arc-shaped abutting piece, each arc-shaped abutting piece is matched with the inner wall of the corresponding gear through hole, and the second straight rod is in threaded connection with a rotating sleeve rod; the end, close to the fixing ring, of the rotating sleeve rod is fixedly connected with at least one connecting column which is annularly and evenly arranged, one end of each connecting column is fixedly connected with a rotating piece, and the rotating pieces are rotationally connected to the connecting portion of the first straight rod and the second straight rod in a sleeving mode. Compared with the prior art, the gear box has the advantage that gears with through holes with different inner diameters can be replaced more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical product design, in particular to a mechanical design product model testing platform. Background Art

[0002] In mechanical design products, gear transmission structure is a frequently used mechanical structure. Gear transmission efficiency is a key factor that determines the performance of mechanical products using gear transmission structure. When conducting a gear transmission efficiency measurement experiment, it is necessary to use a motor to drive the driving wheel through the shaft, and then use the driving wheel to drive the driven wheel to rotate. During this period, the torque, speed and other data of the input shaft and output shaft are measured to complete the calculation of the gear transmission efficiency.

[0003] Currently, when replacing the driving wheel, since the inner diameters of the through holes of different standard gears are different, when replacing gears with different through hole inner diameters, the shaft connected to the motor output end needs to be replaced together. This operation method is too cumbersome and even more troublesome when replacing gears with different through hole inner diameters. Utility Model Content

[0004] (1) Technical problems solved

[0005] The technical problem to be solved by the present invention is that when replacing gears with different through-hole inner diameters, the shaft needs to be disassembled and replaced at the same time, which is troublesome and has low efficiency during replacement.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is: a mechanical design product model testing platform, including a motor, the output end of the motor is fixedly connected to a straight rod 1, and also includes a straight rod 2 fixedly connected to one end of the straight rod 1, a fixing ring is fixedly connected to the connecting part of the straight rod 1 and the straight rod 2, and at least one telescopic rod that is evenly arranged in a ring is inserted in the fixing ring, one end of the telescopic rod is fixedly connected to an arc-shaped abutment, each of the arc-shaped abutments cooperates with the inner wall of the gear through hole, a rotating sleeve rod is threadedly connected to the rotating sleeve rod, and at least one connecting column that is evenly arranged in a ring is fixed at one end of the rotating sleeve rod close to the fixing ring, one end of the connecting column is fixedly connected to a rotating piece, and the rotating piece is rotatably sleeved on the connecting part of the straight rod 1 and the straight rod 2, a plurality of arc grooves arranged in a ring are provided in the rotating piece, and a displacement rod fixedly connected to each telescopic rod is inserted in the arc groove, and a travel groove that cooperates with the displacement rod is provided on the fixing ring.

[0008] As an improvement, the displacement rod is fixed with a plug that matches the arc groove at one end relative to the fixed ring, and the diameter of the plug is greater than the width of the arc groove.

[0009] As an improvement, the fixing ring is provided with a plurality of convex circles that cooperate with the telescopic rods, the fixing ring and the convex circles are both provided with limiting grooves, and the telescopic rods are both provided with grooves that cooperate with the limiting grooves.

[0010] As an improvement, the connection portion between the telescopic rod and the arc-shaped abutment piece is widened.

[0011] As an improvement, a handle is fixedly connected to one end of the two relatively connected parts of the straight rod, and the handle is provided with a plurality of anti-slip grooves evenly arranged in a ring shape.

[0012] As an improvement, a fastening plate that cooperates with the rotating sleeve is threadedly connected to the second straight rod, the internal thread of the fastening plate is opposite to the direction of the internal screw of the rotating sleeve, and a spacer that cooperates with the rotating sleeve is adhered to one side of the fastening plate.

[0013] (3) Beneficial effects

[0014] The advantage of the present invention over the prior art is that when the inner diameters of the through holes of the gears to be replaced are different, rotating the rotating sleeve rod can drive the rotating piece to rotate. With the cooperation of the arc groove and the displacement rod, the telescopic rod can be extended and retracted in the fixed ring, thereby driving each arc-shaped abutment piece to expand or retract at the same time, so that it can be suitable for gears with through holes of different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a mechanical design product model testing platform of the present utility model.

[0016] Figure 2 The utility model is a structural diagram of a straight rod and a connecting structure of a mechanical design product model testing platform.

[0017] Figure 3 The utility model is a structural diagram of the connection structure of a mechanical design product model testing platform.

[0018] Figure 4 It is an enlarged view of point B of a mechanical design product model testing platform of the present utility model.

[0019] Figure 5 This is a schematic diagram of the connection structure of a mechanical design product model test platform without a turntable. Figure 1 .

[0020] Figure 6 This is a schematic diagram of the connection structure of a mechanical design product model test platform without a turntable. Figure 2 .

[0021] Figure 7 It is a front sectional view of a mechanical design product model test platform without a motor according to the present invention.

[0022] Figure 8 It is an enlarged view of point A of a mechanical design product model testing platform of the present utility model.

[0023] As shown in the figure: 1. Motor; 2. Straight rod 1; 3. Rotating sleeve rod; 4. Straight rod 2; 5. Handle; 6. Fastening plate; 7. Connecting column; 8. Rotating plate; 9. Arc groove; 10. Fixed ring; 11. Telescopic rod; 12. Arc-shaped stop plate; 13. Displacement rod; 14. Plug; 15. Convex circle; 16. Groove; 17. Limiting groove; 18. Gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 、 Figure 2 、 Figure 3 Figure 5 and Figure 6 As shown, a mechanical design product model testing platform includes a motor 1, the output end of the motor 1 is fixedly connected to a straight rod 2, and also includes a straight rod 2 4 fixedly connected to one end of the straight rod 2, a fixing ring 10 is fixedly connected to the connecting portion of the straight rod 2 and the straight rod 2 4, and at least one telescopic rod 11 is inserted into the fixing ring 10 and is evenly arranged in a ring shape, and one end of each telescopic rod 11 is fixedly connected to an arc-shaped retaining piece 12, and the connecting portion between the telescopic rod 11 and the arc-shaped retaining piece 12 is widened to improve the stability of the connection between the telescopic rod 11 and the arc-shaped retaining piece 12, and each of the arc-shaped retaining pieces 12 cooperates with the inner wall of the through hole of the gear 18.

[0027] Through the above structure, the arc-shaped retaining piece 12 can be used to abut the inner wall of the through hole of the gear 18. How to control the arc-shaped retaining piece 12 to expand or retract at the same time? The specific structure is as follows:

[0028] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the straight rod 2 4 is threadedly connected to a rotating sleeve rod 3, and the rotating sleeve rod 3 is fixedly connected to at least one connecting column 7 evenly arranged in an annular shape at one end close to the fixed ring 10. One end of the connecting column 7 is fixedly connected to a rotating piece 8, and the rotating piece 8 is rotatably sleeved on the connecting portion of the straight rod 1 2 and the straight rod 2 4. A plurality of arc grooves 9 arranged in an annular shape are provided in the rotating piece 8, and a displacement rod 13 fixedly connected to each telescopic rod 11 is inserted in the arc groove 9. The fixed ring 10 is provided with a stroke groove that cooperates with the displacement rod 13, and the displacement rod 13 is fixedly connected to a plug 1 that cooperates with the arc groove 9 at one end relative to the fixed ring 10. 4. The diameter of the plug 14 is larger than the width of the arc groove 9. The plug 14 can improve the stability of the displacement rod 13 moving in the arc groove 9. The handle 5 is fixed to one end of the relative connection part of the straight rod 2 4. The handle 5 is provided with a plurality of anti-slip grooves evenly arranged in a ring shape. When rotating the rotating sleeve rod 3, hold the handle 5 to avoid shaking. The straight rod 2 4 is threadedly connected with a fastening piece 6 that cooperates with the rotating sleeve rod 3. The internal thread of the fastening piece 6 is opposite to the direction of the internal screw of the rotating sleeve rod 3. A spacer that cooperates with the rotating sleeve rod 3 is adhered to one side of the fastening piece 6. Tightening the fastening piece 6 can improve the stability when tightening the rotating sleeve rod 3.

[0029] Through the above structure, the rotating sleeve rod 3 can be rotated to control the arc-shaped abutment pieces 12 to expand or retract at the same time.

[0030] Example 2

[0031] like Figure 3 and Figure 4 As shown, the fixing ring 10 is provided with a plurality of convex circles 15 that cooperate with each telescopic rod 11 , the fixing ring 10 and the convex circles 15 are both provided with limiting grooves 17 , and the telescopic rods 11 are both provided with grooves 16 that cooperate with the limiting grooves 17 .

[0032] With the above structure, the stability of the telescopic rod 11 moving in the fixing ring 10 can be improved.

[0033] When the gear is replaced with a new gear, the new gear is passed through one end of the handle through the through hole and moved to the arc-shaped retaining piece, the arc-shaped retaining piece faces the inner wall of the through hole of the gear, and then the position of the arc-shaped retaining piece is adjusted so that each arc-shaped retaining piece is in close contact with the inner wall of the through hole of the newly replaced gear. Specifically, the handle is held and the rotating sleeve is rotated. At this time, the straight rod one and the straight rod two are fixed. When the rotating sleeve rotates, the rotating piece can be driven to rotate by the connecting column. At this time, the fixing ring is fixed. Under the cooperation of the arc groove and the displacement rod, each displacement rod can slide simultaneously in each arc groove. The telescopic rod connected to the displacement rod can slide in the fixing ring. Under the cooperation of the groove and the limit groove, the stability of the telescopic rod when sliding can be improved. In this way, each arc-shaped retaining piece can be driven to expand or retract at the same time until the arc-shaped retaining piece is in close contact with the inner wall of the gear through hole. The fastening piece can be tightened to lock the position of the rotating sleeve, thereby locking the position of the arc-shaped retaining piece. This makes it convenient to replace gears with through holes with different inner diameters.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0036] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A mechanical design product model testing platform, comprising a motor (1), wherein the output end of the motor (1) is fixedly connected to a straight rod (2), characterized in that: It also includes a straight rod 2 (4) fixedly connected to one end of the straight rod 1 (2), a fixing ring (10) fixedly connected to the connection portion between the straight rod 1 (2) and the straight rod 2 (4), at least one telescopic rod (11) uniformly arranged in a ring shape is inserted into the fixing ring (10), one end of each telescopic rod (11) is fixedly connected to an arc-shaped retaining piece (12), and each arc-shaped retaining piece (12) cooperates with the inner wall of the through hole of the gear (18); The straight rod 2 (4) is threadedly connected to a rotating sleeve rod (3). The rotating sleeve rod (3) is fixedly connected to at least one connecting column (7) evenly arranged in an annular shape at one end close to the fixed ring (10). A rotating plate (8) is fixedly connected to one end of the connecting column (7). The rotating plate (8) is rotatably sleeved on the connecting portion between the straight rod 1 (2) and the straight rod 2 (4). The rotating plate (8) is provided with a plurality of arc grooves (9) arranged in an annular shape. Displacement rods (13) fixedly connected to each telescopic rod (11) are inserted into the arc grooves (9). The fixed ring (10) is provided with a travel groove that cooperates with the displacement rod (13).

2. A mechanical design product model testing platform according to claim 1, characterized in that: The displacement rod (13) is fixedly connected to a plug (14) at one end relative to the fixing ring (10) and matched with the arc groove (9). The diameter of the plug (14) is larger than the width of the arc groove (9).

3. A mechanical design product model testing platform according to claim 1, characterized in that: The fixing ring (10) is provided with a plurality of convex circles (15) that cooperate with the telescopic rods (11); the fixing ring (10) and the convex circles (15) are both provided with limiting grooves (17); and the telescopic rods (11) are both provided with grooves (16) that cooperate with the limiting grooves (17).

4. A mechanical design product model testing platform according to claim 1, characterized in that: The connection portion between the telescopic rod (11) and the arc-shaped abutment piece (12) is designed to be widened.

5. The mechanical design product model testing platform according to claim 1, characterized in that: One end of the relative connection portion of the straight rod 2 (4) is fixedly connected with a handle (5), and the handle (5) is provided with a plurality of anti-slip grooves evenly arranged in an annular shape.

6. A mechanical design product model testing platform according to claim 1, characterized in that: The second straight rod (4) is threadedly connected to a fastening piece (6) that cooperates with the rotating sleeve rod (3); the internal thread of the fastening piece (6) is opposite to the direction of the internal screw of the rotating sleeve rod (3); and a spacer that cooperates with the rotating sleeve rod (3) is adhered to one side of the fastening piece (6).

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