Air suction four-bar linkage device

Abstract

The utility model discloses an air suction four-bar linkage device, which belongs to the technical field of air suction four-bar linkage, and comprises a four-bar linkage front fixing seat, two upper connecting bars are hinged on the four-bar linkage front fixing seat, two adjusting plates are fixedly connected on the upper connecting bars, four through holes are arranged on the adjusting plates, and the four through holes are communicated with the upper connecting bars. And long bolts are arranged in the two through holes. According to the air suction four-connecting-rod device, by arranging the adjusting plates, the through holes, the hexagonal nuts, the upper connecting rods and the long bolts, along with the increase of the number of the hexagonal nuts, the pressing force of the hexagonal nuts on the adjusting plates can be increased, then the pressing force of the two adjusting plates on the two upper connecting rods is adjusted, and therefore the pressing force of the two upper connecting rods on the four-connecting-rod front fixing base is adjusted; according to the device, the pressing force of the upper connecting rod on the four-connecting-rod front fixing base can be adjusted step by step, the device can adapt to different application scenes conveniently, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of air suction four-link mechanism, and specifically relates to an air suction four-link mechanism device. Background Art

[0002] The air suction four-link mechanism is a mechanical structure, which generally refers to a mechanism composed of four linkages. These linkages are interconnected through hinge points to form a closed system. It is difficult for the traditional air suction four-link mechanism to adjust the pressing force of the rotating part on the fixed part, resulting in its difficulty in adapting to different application scenarios and limiting its scope of use. Content of the Utility Model

[0003] In order to overcome the above defects, the utility model provides an air suction four-link mechanism device, which solves the problem that it is difficult for the traditional air suction four-link mechanism to adjust the pressing force of the rotating part on the fixed part, resulting in its difficulty in adapting to different application scenarios and limiting its scope of use.

[0004] To achieve the above object, the utility model provides the following technical solution: an air suction four-link mechanism device, including a four-link front fixing seat, two upper linkages are hinged on the four-link front fixing seat, an adjusting plate is fixedly connected to the upper linkage, the number of the adjusting plates is two, four through holes are opened on the adjusting plate, long bolts are arranged inside two of the through holes, hex nuts are threadedly connected to both ends of the long bolts, a connecting rod is slidably connected between the two adjusting plates, a profiling spring combination is arranged on the connecting rod, and cylinders are fixedly connected to both ends of the connecting rod.

[0005] As a further scheme of the utility model: a transmission chain is arranged inside the four-link front fixing seat, and two lower linkages are arranged on the four-link front fixing seat.

[0006] As a further scheme of the utility model: the lower linkage is located at the bottom of the upper linkage.

[0007] As a further scheme of the utility model: the hex nut is in contact with the adjusting plate, and the upper linkage is designed in an arc shape.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing an adjusting plate, through holes, hex nuts, upper connecting rods and long bolts, when it is necessary to adjust the pressure of the two adjusting plates on the two upper connecting rods, first place one to four long bolts into the through holes according to the need. At this time, tighten the hex nuts, and the hex nuts press the adjusting plate. As the number of long bolts increases, the number of hex nuts also increases, so that the pressing force of the hex nuts on the adjusting plate becomes larger, thereby adjusting the pressing force of the two adjusting plates on the two upper connecting rods, and then adjusting the pressing force of the two upper connecting rods on the front fixing seat of the four-link mechanism, and further adjusting the frictional force between the upper connecting rod and the front fixing seat of the four-link mechanism. This device can gradually adjust the pressing force of the upper connecting rod on the front fixing seat of the four-link mechanism, facilitating the device to adapt to different application scenarios and expanding its scope of use. Brief Description of the Drawings

[0009] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0010] Figure 2 is a disassembled structural schematic diagram of the present utility model;

[0011] Figure 3 is a three-dimensional structural schematic diagram of the connecting rod of the present utility model;

[0012] In the figure: 1. Front fixing seat of the four-link mechanism; 2. Profiled spring combination; 3. Adjusting plate; 4. Transmission chain; 5. Lower connecting rod; 6. Upper connecting rod; 7. Long bolt; 8. Through hole; 9. Hex nut; 10. Connecting rod; 11. Cylinder. Detailed Description of the Preferred Embodiments

[0013] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0014] As Figures 1-3 shown, the present utility model provides a technical solution: a pneumatic suction four-link mechanism device, including a front fixing seat 1 of the four-link mechanism. Two upper connecting rods 6 are hinged on the front fixing seat 1 of the four-link mechanism. An adjusting plate 3 is fixedly connected to the upper connecting rod 6. The number of adjusting plates 3 is two. A transmission chain 4 is arranged inside the front fixing seat 1 of the four-link mechanism. Two lower connecting rods 5 are arranged on the front fixing seat 1 of the four-link mechanism.

[0015] Four through holes 8 are provided on the adjusting plate 3. Due to the four through holes 8, the four through holes 8 provide space for the long bolts 7, facilitating the placement of the long bolts 7 inside the adjusting plate 3. Two of the through holes 8 are provided with long bolts 7. Both ends of the long bolts 7 are threadedly connected with hex nuts 9. Due to the hex nuts 9, the adjusting plate 3 is pressed by the hex nuts 9, thus facilitating the adjustment of the pressing force of the upper connecting rod 6 on the front fixing seat 1 of the four-link mechanism. The hex nuts 9 are in contact with the adjusting plate 3, and the upper connecting rod 6 is arc-shaped.

[0016] A connecting rod 10 is slidably connected between two adjusting plates 3. An imitation-shaped tension spring assembly 2 is arranged on the connecting rod 10. Cylinders 11 are fixedly connected to both ends of the connecting rod 10. Due to the provision of the connecting rod 10 and the cylinders 11, the cylinders 11 facilitate the sliding of the adjusting plates 3 thereon. Moreover, the connecting rod 10 is square-shaped, which can limit the distance between the two adjusting plates 3, so that the pressure of the two adjusting plates 3 on the two upper connecting rods 6 is maintained within a certain range. The lower connecting rod 5 is located at the bottom of the upper connecting rod 6.

[0017] The working principle of the present utility model is as follows:

[0018] When it is necessary to adjust the pressure of the two adjusting plates 3 on the two upper connecting rods 6, first place one to four long bolts 7 into the through holes 8 as required. At this time, tighten the hexagon nuts 9. The hexagon nuts 9 press the adjusting plates 3. As the number of long bolts 7 increases, the number of hexagon nuts 9 also increases, so that the pressing force of the hexagon nuts 9 on the adjusting plates 3 becomes larger, thereby adjusting the pressing force of the two adjusting plates 3 on the two upper connecting rods 6, and then adjusting the pressing force of the two upper connecting rods 6 on the four-link front fixing seat 1, and further adjusting the frictional force between the upper connecting rod 6 and the four-link front fixing seat 1.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] The above has described the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of this patent.

Claims

1. Air suction four-bar linkage device, including a four-bar front fixed seat (1), characterized in that: Two upper link rods (6) are hinged to the four-link front fixing seat (1), an adjusting plate (3) is fixedly connected to the upper link rod (6), the number of the adjusting plates (3) is two, four through holes (8) are formed in the adjusting plates (3), long bolts (7) are arranged inside two of the through holes (8), hexagonal nuts (9) are threadedly connected to both ends of the long bolts (7), a connecting rod (10) is slidably connected between the two adjusting plates (3), a profiling spring combination (2) is arranged on the connecting rod (10), and cylinders (11) are fixedly connected to both ends of the connecting rod (10).

2. The air suction four-bar linkage device according to claim 1, characterized in that: A transmission chain (4) is arranged inside the four-link front fixing seat (1), and two lower link rods (5) are arranged on the four-link front fixing seat (1).

3. The air suction four-bar linkage device according to claim 2, characterized in that: The lower link rod (5) is located at the bottom of the upper link rod (6).

4. The air-suction four-bar linkage device according to claim 1, wherein: The hexagonal nut (9) is in contact with the adjusting plate (3), and the upper link rod (6) is designed in an arc shape.

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