Why Is Rigid Tiedown Useful in Mechanical Connection?

Rigid Tiedown refers to a device that connects two parts or components so that they maintain their positional relationship without deformation or movement, and has a certain degree of rigidity and stability. In stage machinery, rigid chain is mainly used for rigid chain system to complete linear transmission, making rigid chain a new type of mechanical component for vertical lifting load or load-bearing platform. At present, it has been widely used in the fields of automobile industry, nuclear industry, industrial furnace, steel structure manufacturing, machinery manufacturing and theater stage.

In the field of industrial application, there are various technical solutions to solve the problem of linear motion of loads. Commonly used ones are: hydraulic cylinder, cylinder, electric push rod (screw propeller), chain, wire rope, cam, inclined slider, scissors support, gear rack and self-assembly screw lifter, etc. Some of these methods have complex systems, such as hydraulic, pneumatic, cam, slider, scissor support, gear rack and self-assembly screw lifter, etc., all of which require a power and motion conversion system: some have a single function and can only withstand tension but not be used in situations where pressure is applied, that is, they can only pull but not push the movement of objects. For example, the research on rigid chains such as chains and wire ropes mainly solves the problem of using improved chains to withstand both tension and pressure, so that they are widely used in the field of linear motion (horizontally arranged or vertically arranged).

There are rollers for driving at both ends of the chain pin and on the outside of the chain plate, and a larger diameter roller for internal guidance of the driver in the middle of the chain plate. A shoulder is provided at one end of the chain plate and a shoulder groove is provided at the other end. The shoulders and shoulder grooves on the adjacent chain link chain plates cooperate with each other, so that the chain can rotate in one direction but not in the other direction. When the chain is subjected to pressure load, the specially shaped head link makes the force point deviate from the center of the pin shaft, generating a locking force between the shoulder and the shoulder groove, so that the adjacent links are locked together, and the chain has the characteristics of rigid push rod. In order to maintain the stability of the head link, two pin shafts are required.

Two rows of pin shafts are set on the inner and outer sides of the front of the chain plate, and rollers for driving and guiding are set at both ends of the pin shaft. The inner side (guide side in the machine) pin shaft is used to connect the inner and outer chain plates and make them have the same relative rotation function as ordinary chains. At the position corresponding to the outer side (drive side) pin shaft, the inner and outer chain plates are both opened with a notch that is symmetrical with the pin shaft diameter. The engagement of the pin shaft and the chain plate notch can make the chain links stack up like building blocks to form a rigid column when leaving the drive sprocket. Like the chain lifter, the hinge lifter also uses the force condition of the special chain link at the head, and locks the chain links together under the action of the pin shaft and the notch.

Rigid Tiedown is driven by a driver, which has a drive sprocket and a guide plate inside. The chain lifter uses the roller in the middle of the chain plate, and the hinge lifter uses the guide roller of the chain plate. The guide plate can make the chain in a vertical position when it just leaves the drive sprocket and the chain entering the non-load-bearing side of the driver in a horizontal state. The sprocket of the driver can be driven by any form of mechanical device determined by the required speed and power.

In mechanical manufacturing, construction and other fields, Rigid Tiedown is widely used, which can effectively improve the stability and safety of the system and has high economic and social benefits. Therefore, the selection of suitable rigid joint materials, the selection of appropriate tightening force and specifications, and the correct installation and operation can give full play to the advantages of rigid joints, improve the stability and safety of the system, reduce structural looseness, reduce maintenance costs, and improve maintenance efficiency.