Heavy duty pneumatic mechanical expansion shaft

Abstract

The utility model discloses a kind of heavy load pneumatic mechanical expansion shaft, including manipulator mounting flange, the outside fixed connection of manipulator mounting flange is limit flange, and the surface of limit flange is equipped with guide pillar, the guide pillar is inserted in connecting rod expansion sleeve, and connecting rod expansion sleeve is connected with cylinder telescopic rod, and the end of cylinder is installed in cylinder mounting seat surface.The utility model is equipped with shaft group by manipulator mounting flange, limit flange and connecting support cross bar etc., connecting push rod is driven under the cylinder, connecting rod expansion sleeve pushes away four connecting rods synchronously, so that tile shaft forms open and tubular wall inner expansion tight state, cylinder is retracted when tile shaft expansion tight is released, can be, to ensure that tile shaft both ends expansion force is even, it is equipped with connecting rod expansion sleeve system in left and right sides, the structure of this pure mechanical type expansion shaft mechanism is simple, stable and reliable, and can guarantee heavy workpiece expansion tight gripping, expansion stroke is big, compatibility is wide, and applicability to various different pipe diameters is strong.

Description

Technical Field

[0001] This utility model relates to the field of mechanical expansion shaft technology, and in particular to a heavy-duty pneumatic mechanical expansion shaft. Background Technology

[0002] Heavy-duty pneumatic mechanical expansion shafts (also known as keyed air expansion shafts) are special mechanical shaft components that achieve rapid winding and unwinding through air inflation. They are designed specifically for bearing heavy loads. By controlling the extension and retraction of the key strips on the shaft surface through air inflation and deflation, the fixing or release of roll materials (such as paper tubes and films) can be completed within seconds. They are made of high-hardness steel, and the shaft diameter can be customized. The maximum load capacity exceeds 1 ton and is suitable for heavy machinery and equipment.

[0003] Existing pneumatic mechanical expansion shafts expand and contract by compressing air or other gases, resulting in an overly complex control structure that reduces stability and reliability during use. To address this issue, we propose a heavy-duty pneumatic mechanical expansion shaft. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heavy-duty pneumatic mechanical expansion shaft.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A heavy-duty pneumatic mechanical expansion shaft includes a robot arm mounting flange. A limit flange is fixedly connected to the outer side of the robot arm mounting flange, and a guide post is installed on the surface of the limit flange. The guide post is inserted into a connecting rod expansion sleeve, and the connecting rod expansion sleeve is connected to a cylinder telescopic rod. The end of the cylinder is installed on the surface of a cylinder mounting seat, and a connecting support crossbar is fixedly connected to the outer end of the cylinder mounting seat. An oilless sleeve is fixedly connected to the end of the connecting rod expansion sleeve, and one end of a connecting rod is installed on the surface of the oilless sleeve through a connecting rod pin. The other end of the connecting rod is connected to the inside of a connecting push rod through a connecting rod pin and a deep groove ball bearing, and a bearing is installed on the surface of the connecting push rod.

[0006] Preferably, both ends of the connecting support crossbar are bolted to limit flanges, and four limit flanges are installed between the two limit flanges.

[0007] Preferably, four fixing blocks are fixed to the outer end of the cylinder mounting base, and the fixing blocks are connected to the connecting support crossbar by bolts.

[0008] Preferably, the cross-section of the bearing shaft is set to an arc shape, and the bearing shaft is connected to the surface of the connecting push rod by multiple bolts.

[0009] Preferably, the guide post and the limiting flange are connected by bolts, and the inner wall size of the connecting rod expansion sleeve is adapted to the surface size of the guide post.

[0010] Preferably, both ends of the connecting push rod are fixedly connected to guide blocks, and the limiting flange has a strip-shaped through groove adapted to the guide blocks inside.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The device consists of a shaft assembly composed of a robotic arm mounting flange, a limiting flange, and a connecting support crossbar. Driven by a cylinder, the connecting rod push rod and the connecting rod expansion sleeve push the four connecting rods open simultaneously, thereby causing the bearing shaft to expand and tighten inside the tubular wall. When the bearing shaft is released from tightening, the cylinder retracts. To ensure uniform expansion force at both ends of the bearing shaft, a connecting rod expansion sleeve system is provided on both the left and right sides. This purely mechanical shaft expansion mechanism has a simple, stable, and reliable structure, and can ensure the tightening and gripping of heavy workpieces, with a large expansion stroke, wide compatibility, and strong applicability to various pipe diameters. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a heavy-duty pneumatic mechanical expansion shaft proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the three-dimensional separation state of the bearing structure in the middle; Figure 3 for Figure 1 A three-dimensional cross-sectional view of the connecting support crossbar and the robot arm mounting flange structure. Figure 4 for Figure 1 A three-dimensional cross-sectional view of the guide post and cylinder mounting base structure.

[0013] In the diagram: 1. Robot arm mounting flange; 2. Deep groove ball bearing; 3. Connecting support crossbar; 4. Connecting rod; 5. Oilless sleeve; 6. Guide post; 7. Cylinder mounting seat; 8. Connecting rod expansion sleeve; 9. Cylinder; 10. Connecting rod pin; 11. Connecting push rod; 12. Bearing shaft; 13. Guide block; 14. Limiting flange. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-4A heavy-duty pneumatic mechanical expansion shaft includes a robot arm mounting flange 1. A limiting flange 14 is fixedly connected to the outer side of the robot arm mounting flange 1. Two limiting flanges 14 are symmetrically installed to facilitate the limiting of two sets of shafts. A guide post 6 is installed on the surface of the limiting flange 14. The guide post 6 is inserted into a connecting rod expansion sleeve 8. The connecting rod expansion sleeve 8 is connected to the telescopic rod of a cylinder 9. The end of the cylinder 9 is installed on the surface of a cylinder mounting seat 7. A connecting support crossbar 3 is fixedly connected to the outer end of the cylinder mounting seat 7. An oilless lubricating sleeve 5 is fixedly connected to the end of the connecting rod expansion sleeve 8. One end of a connecting rod 4 is installed on the surface of the oilless lubricating sleeve 5 via a connecting rod pin 10. The other end of the connecting rod 4 is connected to the inside of a connecting push rod 11 via the connecting rod pin 10 and a deep groove ball bearing 2. A bearing 12 is installed on the surface of the connecting push rod 11.

[0016] Furthermore, refer to Figure 2 and Figure 3 It can be seen that both ends of the connecting support crossbar 3 are connected to the limiting flange 14 by bolts. There are four connecting support crossbars 3 installed between the two limiting flanges 14. The connecting support crossbar 3 can conveniently limit the connection between the two limiting flanges 14.

[0017] Furthermore, refer to Figure 3 and Figure 4 It can be seen that four fixing blocks are fixed on the outer end of the cylinder mounting base 7, and the fixing blocks are connected to the connecting support crossbar 3 by bolts. The four fixing blocks fixed on the outer side of the cylinder mounting base 7 can be easily connected to the connecting support crossbar 3 by bolts, which facilitates the installation of the cylinder 9.

[0018] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the cross-section of the bearing 12 is set to be arc-shaped. The bearing 12 is connected to the surface of the connecting push rod 11 by multiple bolts. The installation stability of the bearing 12 can be increased by installing the bearing 12 by multiple bolts.

[0019] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the guide post 6 and the limiting flange 14 are connected by bolts. The inner wall size of the connecting rod expansion sleeve 8 is adapted to the surface size of the guide post 6. The limiting flange 14 can conveniently limit and fix the guide post 6, and the guide post 6 can guide the connecting rod expansion sleeve 8.

[0020] Furthermore, refer to Figure 3 and Figure 4 It can be seen that both ends of the connecting push rod 11 are fixedly connected to guide blocks 13. The limiting flange 14 has a strip-shaped through groove that matches the guide block 13. By moving the connecting push rod 11, the guide block 13 can slide along the strip-shaped through groove in the limiting flange 14, thus guiding the connecting push rod 11.

[0021] Working principle: When this utility model is in use, when the bearing shaft 12 is open, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 The cylinder 9 can push the connecting rod expansion sleeve 8 to move along the surface of the guide post 6. When the connecting rod expansion sleeve 8 moves, the oilless sliding sleeve 5 can drive one end of the connecting rod 4 to move. At this time, the other end of the connecting rod 4 can push the connecting push rod 11 to drive the guide block 13 to slide along the limit flange 14. As the four sets of connecting push rods 11 move, the bearing shaft 12 can be easily pushed to unfold. When the bearing shaft 12 needs to retract, the cylinder 9 drives the connecting rod expansion sleeve 8 to move in the opposite direction, which can cause the connecting push rod 11 to drive the bearing shaft 12 to retract and reset. The above is the complete working principle of this utility model.

[0022] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0023] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A heavy-duty pneumatic mechanical expansion shaft, comprising a robot arm mounting flange (1), characterized in that, The outer side of the mounting flange (1) of the robotic arm is fixedly connected to a limiting flange (14), and a guide post (6) is installed on the surface of the limiting flange (14). The guide post (6) is inserted into the connecting rod expansion sleeve (8), and the connecting rod expansion sleeve (8) is connected to the telescopic rod of the cylinder (9). The end of the cylinder (9) is installed on the surface of the cylinder mounting seat (7), and a connecting support crossbar (3) is fixedly connected to the outer end of the cylinder mounting seat (7). An oilless sleeve (5) is fixedly connected to the end of the connecting rod expansion sleeve (8), and one end of the connecting rod (4) is installed on the surface of the oilless sleeve (5) through the connecting rod pin (10). The other end of the connecting rod (4) is connected to the inside of the connecting push rod (11) through the connecting rod pin (10) and the deep groove ball bearing (2), and a bearing (12) is installed on the surface of the connecting push rod (11).

2. The heavy-duty pneumatic mechanical expansion shaft according to claim 1, characterized in that, Both ends of the connecting support crossbar (3) are connected to the limiting flange (14) by bolts, and four connecting support crossbars (3) are installed between the two limiting flanges (14).

3. The heavy-duty pneumatic mechanical expansion shaft according to claim 1, characterized in that, The cylinder mounting base (7) has four fixing blocks fixed at its outer end, and the fixing blocks are connected to the connecting support crossbar (3) by bolts.

4. The heavy-duty pneumatic mechanical expansion shaft according to claim 1, characterized in that, The cross-section of the bearing shaft (12) is set to an arc shape, and the bearing shaft (12) is connected to the surface of the connecting push rod (11) by multiple bolts.

5. A heavy-duty pneumatic mechanical expansion shaft according to claim 1, characterized in that, The guide post (6) is connected to the limiting flange (14) by bolts, and the inner wall size of the connecting rod expansion sleeve (8) is adapted to the surface size of the guide post (6).

6. A heavy-duty pneumatic mechanical expansion shaft according to claim 1, characterized in that, Both ends of the connecting push rod (11) are fixedly connected to guide blocks (13), and the limiting flange (14) has a strip-shaped through groove adapted to the guide block (13).

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