Conjugate swing mechanism

Abstract

The utility model relates to the technical field of practical training teaching, and discloses a conjugate swing mechanism, which comprises a fixed plate, the upper surface of the fixed plate is provided with a shell, an L-shaped support and a valve body, two sides of the shell are detachably connected with input bearing end covers, and an input shaft rod is rotatably connected between the two groups of input bearing end covers; through cooperation of a metal handle, an L-shaped support, a valve body, a piston, a rocker and a rotating shaft, after a driven part is stressed, the rotating shaft drives a connecting block to swing, then the connecting block drives a connecting rod to swing at a fixed angle, and therefore the rocker swings through a supporting seat and drives an inner connecting rod on a small connecting rod to reciprocate towards the position above the valve body; therefore, the piston reciprocates in the valve body, the working distance of the conjugate structure can be well displayed, students can conveniently watch and learn the conjugate structure during teaching, the students can better understand the conjugate principle, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of practical training and teaching, in particular to a conjugate swing mechanism. Background Art

[0002] With the rapid development of science and technology, digital design and manufacturing majors have emerged and become the core force in the field of modern industrial production. The learning content of digital design and manufacturing majors is rich and practical, covering all aspects from basic theory to advanced applications. The mechanical equipment often uses a conjugate swing mechanism. The teaching of the conjugate swing principle is essential in teaching and training manufacturing. The conjugate cam mechanism is a mechanism that converts rotary motion into linear motion (or vice versa). Its principle is achieved through the interaction of two cams. In the conjugate cam mechanism, one cam is an active cam and the other cam is a follower cam. The active cam is fixed on the input shaft, and the follower cam is installed on the output shaft. When the input shaft rotates, the active cam will rotate with the follower cam according to a certain law of motion. The motion state of the follower cam changes with the change of the motion state of the active cam, and finally the output shaft realizes linear motion or rotational motion.

[0003] The existing digital design and manufacturing training course teaching process requires the use of a conjugate mechanism to demonstrate its working principle to students. However, most conjugate mechanisms demonstrate the cam swing process through motor drive. The demonstration speed in teaching is too fast, which cannot enable students to observe the cam swing well, and is not convenient for teaching demonstration. Therefore, we need to propose a conjugate swing mechanism. Utility Model Content

[0004] The purpose of the utility model is to provide a conjugate swing mechanism, which can conveniently demonstrate the principle of conjugate swing and can slowly demonstrate the state of the cam driving the rod to swing, so as to facilitate students to observe during teaching and enable students to understand the principle of conjugate swing. The utility model is simple to operate and convenient for students to operate by hand. It does not require electric equipment to drive and has a wide range of applications, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a conjugate swing mechanism, comprising a fixed plate, an outer shell, an L-shaped support and a valve body are installed on the upper surface of the fixed plate, input bearing end covers are detachably connected on both sides of the outer shell, an input shaft is rotatably connected between the two groups of input bearing end covers, one end of the input shaft passes through one group of input bearing end covers and is detachably connected with a metal handle, a rotating shaft is rotatably inserted on the upper surface of the L-shaped support, a follower is provided at one end of the rotating shaft, a connecting block is provided at the other end of the rotating shaft, a piston is provided in the inner cavity of the valve body, an inner connecting rod is provided on the upper surface of the piston, a small connecting rod is hinged on the upper end of the inner connecting rod, a rocker is hinged on the upper end of the small connecting rod, one end of the rocker is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to one end of the connecting block.

[0006] Preferably, a valve cover is provided at the upper end of the valve body, and a support seat is fixedly connected to the upper surface of the valve cover, and the support seat is hinged to one end of the rocker arm close to the small connecting rod.

[0007] Preferably, the connecting block and the rocker are arranged in the same plane, the length of the connecting rod is smaller than the length of the rocker, and the length of the connecting block is smaller than the length of the connecting rod.

[0008] Preferably, output bearing end covers are provided on the other two sides of the housing, and an output shaft is rotatably connected between the two sets of output bearing end covers, and one end of the output shaft passes through one set of output shaft end covers and is fixedly connected to a conjugate cam.

[0009] Preferably, both ends of one side of the driven member are rotatably connected to external bearings, and the outer ring of the external bearing is rollingly connected to the outer side of the conjugate cam.

[0010] Preferably, a worm is provided at the middle portion of the outer side of the input shaft, and the other end of the output shaft is fixedly connected to a worm wheel meshing with the worm wheel.

[0011] Preferably, the connecting block is flipped at a fixed angle with the rotating shaft as the axis, and the upper surface of the valve cover is provided with a through hole for the inner connecting rod to be slidably inserted.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model mainly achieves the coordination among a metal handle, an L-shaped support, a valve body, a piston, a rocker arm and a rotating shaft. After the follower is subjected to force, the rotating shaft drives the connecting block to swing, and then the connecting block drives the connecting rod to swing at a fixed angle, so that the rocker arm swings with the support seat, and the rocker arm drives the inner connecting rod on the small connecting rod to reciprocate above the valve body, so that the piston reciprocates in the valve body. The working distance of the conjugate structure can be well demonstrated, which is convenient for students to watch and study during teaching, so that students can better understand the conjugate principle, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 3 It is a right side cross-sectional structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the valve body of the utility model.

[0019] In the figure: 1. fixing plate; 2. outer casing; 3. input bearing end cover; 4. output bearing end cover; 5. metal handle; 6. input shaft; 7. worm; 8. worm wheel; 9. output shaft; 10. conjugate cam; 11. follower; 12. outer bearing; 13. rotating shaft; 14. connecting rod; 15. rocker; 16. valve body; 17. support seat; 18. small connecting rod; 19. inner connecting rod; 20. L-shaped support; 21. valve cover; 22. connecting block; 23. piston. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: a conjugate swing mechanism, including a fixed plate 1, an outer shell 2, an L-shaped support 20 and a valve body 16 are installed on the upper surface of the fixed plate 1, input bearing end covers 3 are detachably connected on both sides of the outer shell 2, an input shaft 6 is rotatably connected between the two groups of input bearing end covers 3, one end of the input shaft 6 passes through one group of input bearing end covers 3 and is detachably connected with a metal handle 5, a rotating shaft 13 is rotatably inserted on the upper surface of the L-shaped support 20, a follower 11 is arranged at one end of the rotating shaft 13, a connecting block 22 is arranged at the other end of the rotating shaft 13, a piston 23 is arranged in the inner cavity of the valve body 16, an inner connecting rod 19 is arranged on the upper surface of the piston 23, a small connecting rod 18 is hinged at the upper end of the inner connecting rod 19, a rocker 15 is hinged at the upper end of the small connecting rod 18, one end of the rocker 15 is rotatably connected to a connecting rod 14, and one end of the connecting rod 14 is rotatably connected to one end of the connecting block 22.

[0022] A valve cover 21 is provided at the upper end of the valve body 16, and a support seat 17 is fixedly connected to the upper surface of the valve cover 21. The support seat 17 is hinged to one end of the rocker 15 close to the small connecting rod 18. The rocker 15 is supported by the support seat 17 on the valve cover 21, so that the rocker 15 can swing at a fixed angle with the support seat 17 as the axis, thereby driving the inner rod on the small connecting rod 18 to perform reciprocating motion in a straight line.

[0023] The connecting block 22 and the rocker 15 are arranged in the same plane, the length of the connecting rod 14 is less than the length of the rocker 15, the length of the connecting block 22 is less than the length of the connecting rod 14, and the connecting block 22 and the rocker 15 are arranged in the same plane to reduce the occupied space of the overall mechanism and make the mechanism easy to carry.

[0024] Output bearing end covers 4 are provided on the other two sides of the housing 2, and an output shaft 9 is rotatably connected between the two sets of output bearing end covers 4. One end of the output shaft 9 passes through one set of output shaft end covers and is fixedly connected with a conjugate cam 10. The conjugate cam 10 is driven by the output shaft 9 to be rollingly connected with the outer bearing 12 on the follower 11, thereby facilitating the rotating shaft 13 to drive the connecting block 22 to swing at a fixed angle.

[0025] Both ends of one side of the follower 11 are rotatably connected with an outer bearing 12, and the outer ring of the outer bearing 12 is rollingly connected to the outer side of the conjugate cam 10. The interference between the outer bearing 12 and the conjugate cam 10 can make the rotating shaft 13 swing at a fixed angle.

[0026] A worm 7 is provided in the middle part of the outer side of the input shaft 6, and the other end of the output shaft 9 is fixedly connected to a worm wheel 8 meshing with the worm wheel 8. The worm 7 on the input shaft 6 can easily drive the worm wheel 8 on the output shaft 9 to rotate, thereby driving the conjugate cam 10 to rotate when the metal handle 5 is rotated.

[0027] The connecting block 22 is turned at a fixed angle with the rotating shaft 13 as the axis. A through hole is opened on the upper surface of the valve cover 21 for the sliding insertion of the inner connecting rod 19. The inner connecting rod 19 is limited and protected by the through hole to ensure that the piston 23 can reciprocate in the inner cavity of the valve body 16.

[0028] When in use, rotating the metal handle 5 drives the input shaft 6 to rotate, thereby making the worm 7 on the input shaft 6 mesh with the worm wheel 8 on the output shaft 9, so that the output shaft 9 drives the conjugate cam 10 to rotate, and the conjugate cam 10 conflicts with the two sets of outer bearings 12 on the follower 11. When the outer bearing 12 conflicts with the conjugate cam 10, the follower 11 swings, and then the follower 11 drives the connecting block 22 to swing at a fixed angle through the rotating shaft 13. When the connecting block 22 swings, it drives the connecting rod 14 to swing. When the connecting rod 14 swings, it drives one end of the rocker 15 to swing at a fixed angle. The rocker 15 swings with the support seat 17, and then the other end of the rocker 15 drives the small connecting rod 18 to move, and one end of the small connecting rod 18 drives the inner connecting rod 19 to rise and fall, and then the inner connecting rod 19 drives the piston 23 to do a linear reciprocating lifting motion in the valve body 16, which is convenient for demonstrating the conjugation principle to students in teaching and facilitating students' understanding.

[0029] Although the 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 conjugate swing mechanism, comprising a fixed plate (1), characterized in that: The upper surface of the fixing plate (1) is mounted with a housing (2), an L-shaped support (20) and a valve body (16); both sides of the housing (2) are detachably connected with input bearing end covers (3); an input shaft (6) is rotatably connected between the two sets of input bearing end covers (3); one end of the input shaft (6) passes through one set of input bearing end covers (3) and is detachably connected with a metal handle (5); a rotating shaft (13) is rotatably plugged into the upper surface of the L-shaped support (20); one end of the rotating shaft (13) is provided with a A follower (11) is arranged, the other end of the rotating shaft (13) is provided with a connecting block (22), the inner cavity of the valve body (16) is provided with a piston (23), the upper surface of the piston (23) is provided with an inner connecting rod (19), the upper end of the inner connecting rod (19) is hinged with a small connecting rod (18), the upper end of the small connecting rod (18) is hinged with a rocking arm (15), one end of the rocking arm (15) is rotatably connected to a connecting rod (14), and one end of the connecting rod (14) is rotatably connected to one end of the connecting block (22).

2. The conjugate swing mechanism according to claim 1, characterized in that: A valve cover (21) is provided at the upper end of the valve body (16), and a support seat (17) is fixedly connected to the upper surface of the valve cover (21), and the support seat (17) is hinged to one end of the rocker (15) close to the small connecting rod (18).

3. The conjugate swing mechanism according to claim 2, characterized in that: The connecting block (22) and the rocker (15) are arranged on the same plane, the length of the connecting rod (14) is smaller than the length of the rocker (15), and the length of the connecting block (22) is smaller than the length of the connecting rod (14).

4. The conjugate swing mechanism according to claim 3, characterized in that: Output bearing end covers (4) are provided on the other two sides of the housing (2), and an output shaft (9) is rotatably connected between the two sets of output bearing end covers (4), and one end of the output shaft (9) passes through one set of output shaft end covers and is fixedly connected to a conjugate cam (10).

5. The conjugate swing mechanism according to claim 4, characterized in that: Both ends of one side of the driven member (11) are rotatably connected to an outer bearing (12), and the outer ring of the outer bearing (12) is rollingly connected to the outer side of the conjugate cam (10).

6. The conjugate swing mechanism according to claim 5, characterized in that: A worm (7) is provided at the middle portion of the outer side of the input shaft (6), and the other end of the output shaft (9) is fixedly connected to a worm wheel (8) meshing with the worm wheel (8).

7. The conjugate swing mechanism according to claim 6, characterized in that: The connecting block (22) is turned at a fixed angle with the rotating shaft (13) as the axis, and a through hole for the inner connecting rod (19) to be slidably inserted is provided on the upper surface of the valve cover (21).

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