Pneumatic heat preservation cover pull rod limiting device

Abstract

The utility model relates to the technical field of on-line repair welding auxiliary tools for a worn surface of a conveying roller way, in particular to a pull rod limiting device for a pneumatic heat preservation cover. Comprising an upper earring shaft, a pulling plate and a lower base shaft, the upper earring shaft is a part extending out of the upper portion of a cylinder, the lower base shaft is a part extending out of the lower portion of the cylinder, the pulling plate is arranged between the upper earring shaft and the lower base shaft and connected through a shaft pin, and the upper earring shaft is arranged on the upper portion of the cylinder and extends out of the cylinder; the pulling plate is a long-strip-shaped thick steel plate, an upper sleeve hole and a lower sleeve hole are formed in the two ends of the pulling plate, the lower base shaft is arranged on the lower portion of the air cylinder and extends out of the air cylinder, and a lower shaft pin hole is drilled in the end of the lower base shaft. The lower shaft pin hole is used for penetrating through a shaft pin and the upper shaft pin hole to be fixedly connected with the pulling plate through the shaft pin; the pull rod limiting device of the pneumatic heat preservation cover can be operated independently, the operation efficiency is improved, and operation is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of online repair welding auxiliary tools for worn surfaces of conveyor rollers, in particular to a pneumatic heat-insulating cover pull rod limiting device. Background Art

[0002] A pneumatic insulation cover is added to the billet conveying roller of the steel rolling heating furnace to reduce the temperature drop of the billet during operation. The insulation cover is driven by a cylinder. The insulation cover is closed during normal production. When the roller is inspected and maintained, the insulation cover needs to be opened and personnel enter under the insulation cover to perform maintenance work.

[0003] When personnel enter to work under an open insulation cover, in order to prevent the insulation cover from closing due to malfunction of the cylinder and causing mechanical injury to personnel, before entering the work, personnel design a push rod at the open insulation cover mouth and spot weld the push rod to the roller base and the insulation cover. Although this has higher safety, it is more troublesome to operate. First, the welding of the push rod and the cutting after the operation require certified operators, which limits the number of operators; second, the workload of roller maintenance operations is increased; third, the welding quality directly affects the stability, and welding defects also pose safety risks.

[0004] Therefore, there is an urgent need to design a pneumatic insulation cover pull rod limit device to solve the problems of operator restriction, increased workload and safety risks caused by stability impact. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present utility model is to provide a pneumatic heat preservation cover pull rod limiting device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a pneumatic heat preservation cover pull rod limiting device, including an upper earring shaft, a pull rod and a lower base shaft, the upper earring shaft is connected to the cylinder rod connecting block extending from the upper part of the cylinder, the lower base shaft is connected to the cylinder base at the lower part of the cylinder, the upper part of the pull rod is sleeved on the upper earring shaft, an upper shaft pin is provided on the upper earring shaft, the lower part of the pull rod is sleeved on the lower base shaft, a lower shaft pin is provided on the lower base shaft, and the upper shaft pin and the lower shaft pin are both blocked on the outside of the pull rod.

[0007] Specifically, the upper clevis shaft is arranged on the upper part of the cylinder, the upper clevis shaft is rotatably connected to the cylinder rod connecting block, an upper pin shaft hole is arranged on the outer side of the upper clevis shaft, and an upper shaft pin is inserted into the upper pin shaft hole.

[0008] Specifically, the upper shaft pin is used to limit the upper earring shaft and the upper part of the pull rod.

[0009] Specifically, the pull rod is a long thick steel plate, an upper sleeve hole is provided on the upper part of the pull rod, the upper earring shaft is inserted into the upper sleeve hole, and a lower sleeve hole is provided on the lower part of the pull rod, the lower base shaft is inserted into the lower sleeve hole.

[0010] Specifically, the lower base shaft is arranged at the lower part of the cylinder, the lower base shaft is rotatably connected to the cylinder base at the lower part of the cylinder, a lower pin shaft hole is arranged on the outer side of the lower base shaft, and a lower shaft pin is inserted into the lower pin shaft hole.

[0011] Specifically, the lower shaft pin is used to limit the lower base shaft and the lower part of the pull rod.

[0012] The utility model has the following beneficial effects:

[0013] The pneumatic heat preservation cover pull rod limiting device designed by the utility model has the following features: 1. It reduces the difficulty of operation and all personnel can operate it independently.

[0014] 2. Quick operation, saving operation time and improving operation efficiency.

[0015] 3. The cylinder lock is more secure and the operation is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a pneumatic heat preservation cover pull rod limiting device.

[0017] Figure 2 It is the left view of the cylinder part of the pneumatic insulation cover pull rod limit device.

[0018] In the figure: 1-upper earring shaft, 1.1-upper shaft pin; 2-pull rod, 2.1-upper sleeve hole, 2.2-lower sleeve hole; 3-lower base shaft, 3.1-lower shaft pin; 4-cylinder, 4.1-cylinder rod connecting block, 4.2-cylinder base; 5-insulation cover; 6-connecting plate. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely further describe the technical solutions in the embodiments of the present invention. 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.

[0020] Example 1:

[0021] like Figure 1-Figure 2 As shown, a pneumatic heat preservation cover pull rod limiting device includes an upper earring shaft 1, a pull rod 2 and a lower base shaft 3. The upper earring shaft 1 is connected to the cylinder rod connecting block 4.1 extending from the upper part of the cylinder 4, and the lower base shaft 3 is connected to the cylinder base 4.2 extending from the lower part of the cylinder 4. The pull rod 2 is sleeved on the upper earring shaft 1 and the lower base shaft 3, and the pull rod 2 is connected to the upper earring shaft 1 and the lower base shaft 3 through an upper shaft pin 1.1 and a lower shaft pin.

[0022] The upper earring shaft 1 is sleeved on the pull rod 2 through the upper sleeve hole 2.1. One end of the upper earring shaft 1 passes through the cylinder rod connecting block 4.1 and is connected to the connecting plate 6. The other end of the upper earring shaft 1 is provided with an upper shaft pin 1.1.

[0023] The lower base shaft 3 is sleeved on the lower part of the pull rod 2 through the lower sleeve hole 2.2, one end of the lower base shaft 3 passes through the cylinder base 4.2, and a lower shaft pin is provided at the other end of the lower base shaft 3, so that the lower base shaft 3 extends the cylinder base 4.2 and is fixed by the lower shaft pin.

[0024] Upper sleeve holes 2.1 and lower sleeve holes 2.2 are drilled at both ends of the pull rod 2. When in use, the insulation cover 5 is pulled up, and then the upper sleeve holes 2.1 and lower sleeve holes 2.2 at both ends of the pull rod 2 are respectively connected and fixed with the upper shaft pin 1.1 of the upper earring shaft 1 and the lower shaft pin of the lower base shaft 3.

[0025] Example 2: Specific implementation steps using the structural form of Example 1.

[0026] 1. Extend the upper earring shaft 1 and the lower base shaft 3 of the cylinder 4 by 100 mm respectively so that they protrude out of the cylinder 4 body, and drill the upper and lower shaft pin holes 5 mm from the ends;

[0027] 2. After opening the heat preservation cover 5, measure the center distance between the upper earring axis 1 and the lower base axis 3 to be 876mm;

[0028] 3. Use 20mm thick steel plate as the tie rod 2, cut the steel plate to a length of 1000mm and a width of 50mm, and punch a φ32 round hole at the center from the end point to serve as the upper and lower sleeve holes 2.2;

[0029] 4. After the heat preservation cover 5 is opened, the pull rod 2 is put on the upper and lower axis pin holes of the extended upper earring shaft 1 and the lower base shaft 3, and locked with a fixing pin.

[0030] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention.

[0031] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

[0032] 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.

[0033] 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.

Claims

1. A pneumatic heat preservation cover pull rod limiting device, characterized in that: It includes an upper earring shaft, a pull rod and a lower base shaft. The upper earring shaft is connected to the cylinder rod connecting block extending from the upper part of the cylinder, and the lower base shaft is connected to the cylinder base at the lower part of the cylinder. The upper part of the pull rod is sleeved on the upper earring shaft, and an upper shaft pin is provided on the upper earring shaft. The lower part of the pull rod is sleeved on the lower base shaft, and a lower shaft pin is provided on the lower base shaft. Both the upper shaft pin and the lower shaft pin are blocked on the outside of the pull rod.

2. The pneumatic heat preservation cover pull rod limiting device according to claim 1, characterized in that: The upper clevis shaft is arranged on the upper part of the cylinder, the upper clevis shaft is rotatably connected to the cylinder rod connecting block, an upper pin shaft hole is arranged on the outer side of the upper clevis shaft, and an upper shaft pin is inserted into the upper pin shaft hole.

3. The pneumatic heat preservation cover pull rod limiting device according to claim 2, characterized in that: The upper shaft pin is used to limit the upper earring shaft and the upper part of the pull rod.

4. The pneumatic heat preservation cover pull rod limiting device according to claim 1, characterized in that: The pull rod is a long thick steel plate, an upper sleeve hole is provided on the upper part of the pull rod, and the upper earring shaft is inserted into the upper sleeve hole; a lower sleeve hole is provided on the lower part of the pull rod, and the lower base shaft is inserted into the lower sleeve hole.

5. The pneumatic heat preservation cover pull rod limiting device according to claim 1, characterized in that: The lower base shaft is arranged at the lower part of the cylinder, and the lower base shaft is rotatably connected to the cylinder base at the lower part of the cylinder. A lower pin shaft hole is arranged on the outer side of the lower base shaft, and a lower shaft pin is inserted into the lower pin shaft hole.

6. The pneumatic heat preservation cover pull rod limiting device according to claim 5, characterized in that: The lower shaft pin is used to limit the lower base shaft and the lower part of the pull rod.

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