Replaceable fatigue-resistant pre-stressed anchor bolt type train chassis connecting piece

Abstract

The utility model belongs to the technical field of anchor bolt connecting pieces, and discloses a replaceable anti-fatigue pre-stressed anchor bolt type train chassis connecting piece which comprises an anchor bolt, a gasket is arranged on the outer side of the anchor bolt, a nut is connected to the outer surface of the anchor bolt in a threaded and sleeved mode, a lubricating assembly is arranged in the anchor bolt, the anchor bolt comprises a threaded rod, and the threaded rod is connected with the gasket. And a liquid outlet is formed in the screw rod, the outer surface of the screw rod is sleeved with an expansion piece, and the lubricating assembly comprises a movable block. The movable block and the check block are arranged, when an operator extrudes the whole movable block through a tool, the pressing plate is extruded by the check block, the connecting rod and the pressing plate are driven to extrude lubricating oil in the storage groove, the lubricating oil flows between the screw rod and the expansion piece through the groove opening and the liquid outlet, and therefore the rotating force applied to the screw rod is reduced through the lubricating oil; and therefore, the screw rod can be conveniently detached from the interior of the expansion piece, and a new anchor bolt can be replaced by re-punching the expansion piece.

Description

Technical Field

[0001] This utility model belongs to the technical field of anchor bolt connectors, specifically a replaceable fatigue-resistant prestressed anchor bolt type train chassis connector. Background Technology

[0002] As a key connecting component in fields such as machinery, construction, and transportation, the technological development of anchor bolts is closely related to application needs. Anchor bolts are devices that connect or fix components by fixing a screw in a base material.

[0003] In existing technology, anchor bolt-type train chassis connectors are used by inserting the anchor bolt connector into a pre-grooved hole, and then rotating the screw by the nut causes the screw to compress the expansion member, making it form a tight frictional contact or key connection with the hole wall, creating strong tensile strength for connecting train chassis. However, after prolonged use, the anchor bolt connectors are exposed to the outside environment for a long time, causing rust to appear at the expansion member, the nut, and the threaded connection of the anchor bolt. This makes disassembly and replacement cumbersome, time-consuming, and requires a lot of physical strength. Therefore, improvements are needed. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a replaceable fatigue-resistant prestressed anchor bolt type train chassis connector.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable fatigue-resistant prestressed anchor bolt type train chassis connector, including an anchor bolt, a gasket is provided on the outside of the anchor bolt, a nut is threaded onto the outer surface of the anchor bolt, and a lubrication component is provided inside the anchor bolt;

[0006] The anchor bolt includes a screw rod, the screw rod has a liquid outlet inside, and an expansion member is fitted on the outer surface of the screw rod;

[0007] The lubrication assembly includes a movable block, the outer surface of which is movably connected to the inner cavity of the screw, a storage groove is provided inside the movable block, a slot is provided inside the movable block located outside the storage groove, a connecting rod is movably connected inside the movable block, a pressure plate is provided on the outer surface of the connecting rod located in the inner cavity of the storage groove, and a stop block is provided on the inner wall of the screw.

[0008] Preferably, the washer is fitted onto the outer surface of the screw, and the nut is threaded onto the outer surface of the screw.

[0009] Preferably, the screw has a groove inside, which extends to the outside of the screw.

[0010] Preferably, there are two sets of liquid outlets, which are located on both sides of the storage tank and are parallel to the tank opening.

[0011] Preferably, a spring is provided on the outside of the movable block, and the other end of the spring is connected to the inner wall of the screw.

[0012] Preferably, both the screw and the expansion member are made of high-strength alloy steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model is equipped with a movable block and a stop block. When the operator squeezes the movable block with a tool, the pressure plate is squeezed by the stop block, which drives the connecting rod and the pressure plate to squeeze the lubricating oil in the storage tank. The lubricating oil flows into the space between the screw and the expansion member through the groove and the outlet. The lubricating oil reduces the rotational force applied to the screw, making it easier to remove the screw from the expansion member so that it can be re-drilled and replaced with a new anchor bolt. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0018] Figure 4 This is a cross-sectional view of the movable block of this utility model;

[0019] Figure 5 This is a schematic diagram of the screw structure of this utility model.

[0020] In the diagram: 1. Anchor bolt; 101. Screw; 102. Liquid outlet; 103. Expansion piece; 2. Gasket; 3. Lubrication assembly; 301. Movable block; 302. Storage tank; 303. Slot opening; 304. Connecting rod; 305. Pressure plate; 306. Spring; 307. Stop block; 4. Nut. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figures 1 to 5As shown, this is the first embodiment of the utility model, which provides a replaceable fatigue-resistant prestressed anchor bolt type train chassis connector, including an anchor bolt 1, a gasket 2 provided on the outside of the anchor bolt 1, a nut 4 threaded onto the outer surface of the anchor bolt 1, and a lubrication component 3 provided inside the anchor bolt 1.

[0024] The anchor bolt 1 includes a screw 101, with a liquid outlet 102 inside the screw 101 and an expansion member 103 fitted on the outer surface of the screw 101.

[0025] The lubrication assembly 3 includes a movable block 301, the outer surface of which is movably connected to the inner cavity of the screw 101. A storage groove 302 is provided inside the movable block 301, and a slot 303 located outside the storage groove 302 is provided inside the movable block 301. A connecting rod 304 is movably connected inside the movable block 301. A pressure plate 305 located in the inner cavity of the storage groove 302 is provided on the outer surface of the connecting rod 304. A stop block 307 is provided on the inner wall of the screw 101.

[0026] When the operator uses a tool to squeeze the movable block 301 inside the screw 101, the movable block 301 is moved. As the movable block 301 moves, the slot 303 on the movable block 301 gradually connects with the liquid outlet 102. When the connection is made, the pressure plate 305 on the connecting rod 304 is blocked by the stop block 307 and squeezed. Through the connection of the connecting rod 304, the pressure plates 305 in all the storage tanks 302 squeeze the lubricating oil, which then enters the gap between the screw 101 and the expansion member 103 through the slot 303 and the liquid outlet 102, soaking the whole. The lubricating oil makes it easy to disassemble the rusty screw 101 and replace the entire anchor bolt 1.

[0027] Example 2

[0028] like Figure 2 and Figure 3 As shown, this embodiment includes the features of embodiment 1. The distinguishing technical feature is that the gasket 2 is sleeved on the outer surface of the screw 101, and the nut 4 is threadedly sleeved on the outer surface of the screw 101.

[0029] By inserting the anchor bolt 1 into the pre-drilled hole and then rotating the nut 4, the screw 101 is moved backward by the nut 4. The screw 101 then compresses and pushes the end of the expansion member 103 outward, thereby fixing it inside the hole and facilitating the connection and fixation of the train chassis.

[0030] The screw 101 has a slot inside, which extends to the outside of the screw 101;

[0031] The operator extends a tool into the slot to press the movable block 301, causing the pressure plate 305 to press against the stop block 307, which facilitates the expulsion of lubricating oil from the storage tank 302, making it easier to separate the screw 101 from the expansion member 103 through the lubricating oil.

[0032] Among them, there are two sets of liquid outlets 102, which are located on both sides of the storage tank 302 and are parallel to the tank opening 303.

[0033] Two sets of outlets 102 are used to squeeze lubricating oil out from both sides, so that the lubricating oil can be more quickly soaked between the screw 101 and the expansion member 103, thereby making it easier for the operator to remove the screw 101 from the expansion member 103, so that the anchor bolt 1 can be replaced and re-fixed.

[0034] Among them, a spring 306 is provided on the outside of the movable block 301, and the other end of the spring 306 is connected to the inner wall of the screw 101;

[0035] At this time, since the spring 306 is in the compression state, it will apply outward pressure to the movable block 301, thereby keeping the movable block 301 on the outside of the inner cavity of the screw 101, preventing the liquid outlet 102 from aligning with the slot 303, which would cause the connection between the screw 101 and the expansion member 103 to loosen, thus avoiding accidents.

[0036] Both the screw 101 and the expansion member 103 are made of high-strength alloy steel.

[0037] Because the screw 101 and the expansion member 103 are made of high-strength alloy steel, they have high strength and fatigue resistance, and can withstand the alternating loads generated during train operation, thus improving their service life.

[0038] Working principle and usage process of this utility model:

[0039] First, when the operator replaces the new anchor bolt 1, the washer 2 and nut 4 are unscrewed from the outside of the screw 101. Then, the tool is inserted into the groove and squeezes the movable block 301, causing the groove 303 on the movable block 301 to align with the liquid outlet 102. At the same time, the movable block 301 is blocked by the stop block 307, which moves the connecting rod 304 and the pressure plate 305. This causes the pressure plate 305 to squeeze the lubricating oil in the storage tank 302 through the groove 303 and the liquid outlet 102 between the screw 101 and the expansion member 103. Then, the screw 101 is rotated, and the lubricating oil reduces physical labor consumption, making it easier to disassemble the rusted screw 101. The anchor bolt 1 can then be replaced by re-drilling, which brings convenience to the operator.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 "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 list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable fatigue-resistant prestressed anchor bolt type train chassis connector, comprising an anchor bolt (1), characterized in that: A gasket (2) is provided on the outside of the anchor bolt (1), a nut (4) is threaded onto the outer surface of the anchor bolt (1), and a lubrication assembly (3) is provided inside the anchor bolt (1); The anchor bolt (1) includes a screw (101), the screw (101) has an outlet (102) inside, and an expansion member (103) is fitted on the outer surface of the screw (101); The lubrication assembly (3) includes a movable block (301), the outer surface of which is movably connected to the inner cavity of the screw (101), a storage groove (302) is provided inside the movable block (301), a slot (303) located outside the storage groove (302) is provided inside the movable block (301), a connecting rod (304) is movably connected inside the movable block (301), a pressure plate (305) located in the inner cavity of the storage groove (302) is provided on the outer surface of the connecting rod (304), and a stop block (307) is provided on the inner wall of the screw (101).

2. A replaceable fatigue-resistant pre-stressed anchor train chassis connector according to claim 1, characterized in that: The gasket (2) is fitted onto the outer surface of the screw (101), and the nut (4) is threaded onto the outer surface of the screw (101).

3. A replaceable fatigue-resistant pre-stressed anchor train chassis connector according to claim 1, wherein: The screw (101) has a slot inside, which extends to the outside of the screw (101).

4. The replaceable fatigue-resistant pre-stressed anchor train car chassis connector of claim 1, wherein: Two sets of liquid outlets (102) are provided, and the two sets of liquid outlets (102) are located on both sides of the storage tank (302) and are parallel to the tank opening (303).

5. The replaceable fatigue-resistant pre-stressed anchor train car chassis connector of claim 1, wherein: A spring (306) is provided on the outside of the movable block (301), and the other end of the spring (306) is connected to the inner wall of the screw (101).

6. A replaceable fatigue-resistant pre-stressed anchor train chassis connector according to claim 1, wherein: Both the screw (101) and the expansion member (103) are made of high-strength alloy steel.

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