Auxiliary inserting and pulling device for duct piece steel die core rod

Abstract

The auxiliary plugging device comprises an upper shell, a lower shell, a hammer head and a reset spring, the upper shell is connected with the lower shell, a sealing gasket is arranged at the joint of the upper shell and the lower shell, the upper shell is provided with an air inlet, the air inlet is connected with an air inlet pipe, a magnet baffle is arranged on the inner side of the upper shell, the hammer head is arranged on the lower side of the magnet baffle, and the reset spring is arranged on the lower side of the magnet baffle. A sealing ring and an O-shaped ring are arranged on the hammer head, the hammer head is movably installed in an inner cavity of the lower shell, an inlet and outlet hole is formed in the bottom of the cavity, an air cylinder air storage chamber is formed by the upper shell, the magnet baffle and the upper end of the hammer head, and the lower end of the hammer head is connected with a reset spring so that the hammer head can move towards the outside of the inlet and outlet hole along the cavity and reset. Uniform non-deflection force is applied to the core rod through the air cylinder, it is ensured that the core rod is fully protected in the pin inserting process, damage to the core rod is effectively reduced, the device is simple in structure and convenient to maintain, and on the basis of safety and practicability, the damage rate of the core rod in the segment production process can be effectively reduced, and the service life of the core rod can be effectively prolonged.

Description

Technical Field

[0001] This application relates to the field of tunnel segment production technology, and in particular to an auxiliary insertion and removal device for a tunnel segment steel mold core rod. Background Technology

[0002] During the production of tube segments, mandrels are used to support and position the internal apertures of the segments, ensuring that the shape and dimensions of the segments meet requirements. The quality and precision of the mandrels have a significant impact on the quality of the segments. Mandrels effectively prevent deformation of the segments under high temperature or high pressure environments, ensuring the geometric stability of the segments.

[0003] During the mandrel insertion process, workers use hammers to strike the mandrel. Uneven force or misalignment can damage the mandrel. Replacing the mandrel not only increases costs but also affects production schedules. Therefore, a specialized device for mandrel auxiliary pins is needed to prevent and reduce mandrel damage. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides an auxiliary insertion and removal device for the mandrel of the steel mold of the tunnel segment. The device has a housing with an auxiliary pin, an air inlet at the front end of the housing, a hammer inside, and a spring connected to the hammer, so that the hammer can perform repeated hammering motion under the action of compressed air.

[0005] The first aspect of this application provides an auxiliary insertion and removal device for a mandrel in a steel mold for tunnel lining segments, comprising: an upper housing, a lower housing, a hammer head, and a return spring. The upper housing and the lower housing are connected and a sealing gasket is provided at the connection. The upper housing is provided with an air inlet connected to an air inlet pipe. A magnetic baffle is provided on the inner side of the upper housing, and a hammer head is provided on the lower side of the magnetic baffle. A sealing ring and an O-ring are provided on the hammer head. The hammer head is movably installed in the internal cavity of the lower housing. An inlet and outlet hole is provided at the bottom of the cavity. The upper housing, the magnetic baffle, and the upper end of the hammer head form a cylinder air storage chamber. The lower end of the hammer head is connected to the return spring so that the hammer head moves along the cavity outward from the inlet and outlet hole and returns to its original position.

[0006] The magnet baffle is an annular baffle that is fixedly installed at the bottom of the upper housing.

[0007] Flanges are provided on the outer sides of the upper and lower shells, and the flanges are connected by bolts.

[0008] The air inlet is equipped with a solenoid valve, which has an exhaust port. The air inlet pipe is connected to the air pump.

[0009] The bottom of the lower shell is fitted onto the top of the tube segment, and a limit structure is provided for the corresponding tube segment.

[0010] The technical solution provided in this application may include the following beneficial effects:

[0011] This application provides an auxiliary insertion and removal device for the mandrel of the steel mold for tunnel segments, which is adapted to tunnel segment production. It applies a uniform, non-deflection force to the mandrel through a cylinder, ensuring that the mandrel is fully protected during the insertion process, effectively reducing damage to the mandrel. The device has a simple structure, small size, is easy to use and maintain. On the basis of safety and practicality, it can effectively reduce the damage rate of the mandrel during tunnel segment production and extend the service life of the mandrel.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0013] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0014] Figure 1 This is a schematic diagram of the auxiliary insertion and removal device shown in the embodiments of this application;

[0015] Figure label:

[0016] In the diagram, 1—upper housing, 2—connecting bolt, 3—magnetic baffle, 4—sealing ring, 5—O-ring, 6—hammer head, 7—reset spring, 8—lower housing, 9—air inlet. Detailed Implementation

[0017] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0018] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of an auxiliary insertion and removal device for a steel mold core rod of a pipe segment, as shown in an embodiment of this application.

[0023] See Figure 1 ,like Figure 1 The auxiliary insertion and removal device for the mandrel of the segment steel mold shown includes: an upper housing 1, a lower housing 8, a hammer head 6, and a return spring 7. The housing is made of cast tube, and flanges are respectively installed on the outside of the upper housing 1 and the lower housing 8. The flanges are connected to the upper housing 1 and the lower housing 8 by connecting bolts 22. To ensure sealing, a sealing gasket is installed at the connection to prevent compressed air from leaking from the interface, solving the cylinder sealing problem, and also facilitating installation and maintenance.

[0024] The upper housing 1 is provided with an air inlet 9, which is connected to an air intake pipe, and the air intake pipe is connected to an air pump. An electromagnetic valve is installed at the air inlet 9, and the electromagnetic valve has an exhaust port. A magnetic baffle 3 is installed inside the upper housing 1. The magnetic baffle 3 is an annular baffle and is fixedly installed at the bottom of the upper housing 1. A hammer head 6 is installed below the magnetic baffle 3. The hammer head 6 is tightly fitted to the inside of the lower housing 8 and is provided with a sealing ring 4 and an O-ring 5. The hammer head 6 is movably installed in the internal cavity of the lower housing 8, and a return spring 7 is connected to the lower thin end of the hammer head 6. The cavity is located in the upper middle part of the lower housing 8, and an inlet / outlet hole is provided at the bottom of the cavity corresponding to the hammer head 6. The cavity is used to limit the return spring 7, and the inlet / outlet hole is used for the hammer head 6 to extend.

[0025] The upper shell 1, the magnetic baffle 3 and the upper end of the hammer head 6 form a cylinder air storage chamber. After air is injected and force is applied, the hammer head 6 moves along the cavity toward the inlet and outlet hole and extends out of the inlet and outlet hole to hammer the core rod. After the reset spring 7 is compressed, the hammer head 6 moves in the opposite direction and is reset by being attracted by the magnetic baffle.

[0026] In use, the bottom of the lower housing 8 is fitted onto the top of the tube segment. Because the lower housing 8 has a limiting structure corresponding to the tube segment, the tube segment is fixed and prevented from shifting. Under the action of the hammer head 6 and the magnetic baffle 3, the top of the hammer head 6 attracts the upper housing 1. Air is injected into the cylinder's air storage chamber through the air inlet pipe. Compressed air enters the upper housing 1 through the air inlet 9. The hammer head 6 is pushed and moves downwards along the cavity until it extends out of the inlet / outlet hole and strikes the core rod. The hammer head 6 is then reset by the return spring 7 and the magnetic baffle 3, thus allowing for the next striking operation.

[0027] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0028] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0029] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0030] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0031] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An auxiliary insertion and extraction device for a segment steel form mandrel, characterized in that, The utility model relates to a kind of air hammer, including: Upper shell, lower shell, hammer head and reset spring, the upper shell is connected with the lower shell and is provided with sealing gasket at the joint, the upper shell is provided with air inlet, the air inlet is connected with air inlet pipe, the inside of the upper shell is provided with magnet baffle, the lower side of the magnet baffle is provided with the hammer head, the hammer head is provided with sealing ring and O-ring, and is movably installed in the internal cavity of the lower shell, the bottom of the cavity is provided with inlet and outlet hole, the upper end of the upper shell, the magnet baffle and the hammer head form cylinder gas chamber, the lower end of the hammer head is connected with the reset spring, so that the hammer head moves along the cavity to the outside of the inlet and outlet hole and resets.

2. The auxiliary inserting and pulling device for the segment steel mold mandrel according to claim 1, characterized in that, The magnet baffle is an annular baffle, fixedly installed at the bottom of the upper shell.

3. The auxiliary inserting and pulling device for the segment steel mold mandrel according to claim 1, characterized in that, The upper shell and the lower shell are respectively provided with flange plate outside, and the flange plates are connected by bolts.

4. The auxiliary inserting and pulling device for the segment steel mold mandrel according to claim 1, characterized in that, The air inlet is provided with electromagnetic valve, and the electromagnetic valve is provided with exhaust hole, and the air inlet pipe is connected with air pump.

5. The auxiliary inserting and pulling device for the segment steel mold mandrel according to claim 1, characterized in that, The bottom of the lower shell is sleeved on the top of the pipe piece, and is provided with limiting structure corresponding to the pipe piece.

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