Anti-hooking tool for sherardizing of elastic strip

Abstract

An elastic strip sherardizing anti-hooking tool is used for preventing hooking in the sherardizing process of a W-shaped elastic strip and comprises an anti-hooking tool body, the anti-hooking tool body is provided with binding parts and a connecting part, the binding parts are arranged at the two ends of the connecting part or on the same side of the two ends of the connecting part, and the binding parts form a closed hole independently or together with the connecting part. The hole of the binding part is used for surrounding the two ends of the W-shaped elastic strip, and the gap between the two ends of the W-shaped elastic strip and the connecting part is smaller than the diameter of the elastic strip. Due to the arrangement of the two stages of air cylinders, when the cigarette pressing plate packages cigarette stacks with different heights, the cigarette pressing plate is always located within the fixed distance range of the uppermost portion of the cigarette stacks, and the phenomenon that the cigarette stacks are scattered in the packaging process is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of railway spring clip anti-corrosion tooling, and in particular to a spring clip zinc-dip-proof anti-hooking tooling. Background Art

[0002] Railway rails support and steer locomotives. They are secured to the trackbed sleepers by elastic fasteners. The clamping elements of these fasteners are primarily spring clips, which generate a clamping force on the rails through bending and twisting. This effectively ensures a reliable connection between the rails, maintains track integrity, and prevents longitudinal and lateral movement of the rails relative to the sleepers, ensuring a normal track gauge and thus ensuring safe rail vehicle operation. Furthermore, since the contact between train wheels and rails is rigid, vibration is inevitable. However, the unique elastic structure of the spring clips allows them to absorb the impact energy generated by passing vehicles, achieving a shock-absorbing effect. Spring clips operate under repeated alternating stresses, enduring bending, torsion, fatigue, and corrosion. They are also subject to extremely high transient impact loads from passing vehicles, placing stringent performance requirements on these clips.

[0003] The bending, torsion and fatigue resistance of the spring bars can be solved by selecting the corresponding steel grades and production processes, while corrosion resistance must be achieved by anti-corrosion treatment of the spring bars.

[0004] Sherardizing is a chemical heat treatment process that infiltrates zinc into the surface of the workpiece. Sherardizing the surface of steel parts can significantly improve the atmospheric corrosion resistance. After sherardizing the spring bars, the corrosion resistance of the spring bars can be significantly improved.

[0005] During the shearing treatment process in the shearing furnace, the spring bars are easily hooked together due to the continuous rotation of the shearing furnace, so that they are difficult to separate after shearing, and a lot of manpower is required to separate the spring bars.

[0006] To this end, our company has developed a tooling for spring bar zinc infiltration and applied for relevant patents with the announcement number CN215404461U, which includes a spring bar frame and a spacer. The spring bar frame includes a base plate, a penetrating rod, a nut and an upper plate. Three penetrating rods are arranged in a herringbone shape on the base plate, one in front and two in the back. Two support pads are symmetrically arranged on both sides of the front penetrating rod in contact with the base plate. The top of the penetrating rod is provided with an external thread. The nut cooperates with the external thread at the top of the penetrating rod and is screwed on the top of the penetrating rod. Three through holes are arranged in a herringbone shape on the upper plate to allow the three penetrating rods to pass through. The spacer includes a circular ring and two butterfly wings, and the butterfly wings are symmetrically arranged on both sides of the circular ring.

[0007] However, in actual use of this tooling, it was found that the spring bar was tightly pressed on the spring bar frame, and the contact parts of the spring bar usually formed close contact. There would be no gap during the zinc infiltration process, which resulted in the zinc infiltration depth of the close contact parts of the spring bar failing to meet the requirements after zinc infiltration, resulting in weak parts and poor corrosion resistance. Utility Model Content

[0008] The present application provides a spring bar anti-hooking tool for sherardizing, which is used to prevent hooking of W-shaped spring bars during the sherardizing process. Each spring bar is equipped with an anti-hooking tool, which can make the gap at the opening of the spring bar smaller than the diameter of the spring bar, so that the spring bar cannot hook with other spring bars during the rolling process of the sherardizing process, thereby avoiding the spring bars from hooking with each other during the sherardizing process.

[0009] At the same time, the imitation hook-and-loop tooling of the present invention is not in close contact with the elastic bar, and no close contact parts are formed during the sherardizing process. No sherardizing weak parts are formed after sherardizing, and the corrosion resistance is greatly improved.

[0010] According to one aspect of the present application, an embodiment provides an anti-hooking tool for sherardizing spring bars, which is used to prevent hooking during the sherardizing process of W-type spring bars, including an anti-hooking tool body, wherein the anti-hooking tool body has a binding portion and a connecting portion, wherein the binding portion is arranged at both ends of the connecting portion or on the same side of both ends, and the binding portion alone or together with the connecting portion constitutes a closed hole, wherein the hole of the binding portion is used to encircle the two ends of the W-type spring bar, and the gap between the two ends of the W-type spring bar and the connecting portion is smaller than the diameter of the spring bar.

[0011] In some embodiments, the size of the closed hole on the tie portion is 1-1.5 times the diameter of the W-shaped spring bar.

[0012] In some embodiments, when the binding portion has a closed hole, the binding portion has longitudinal elasticity, which facilitates the binding portion to be passed through the two ends of the W-shaped elastic bar.

[0013] In some embodiments, when the binding portion has a closed hole, the connecting portion has the same longitudinal elasticity as the binding portion or the connecting portion has rigidity.

[0014] In some embodiments, the binding portion alone or together with the connecting portion constitutes a closed hole with an opening provided thereon.

[0015] In some embodiments, when the binding portion has a closed hole with an opening, there are three binding portions, two of which are arranged on the same side at both ends of the connecting portion, and the remaining binding portion is arranged in the middle of the connecting portion, used to encircle the middle of the W-shaped elastic bar, and the three binding portions are located on the same side of the connecting portion.

[0016] In some embodiments, the opening direction of the binding portion located in the middle of the connecting portion is different from the opening direction of the binding portions on the same side of the two ends of the connecting portion, so as to avoid the elastic bars of the imitation hook-connection tooling of the present invention from falling out from the openings of the binding portions at the same time in some cases, making the imitation hook-connection tooling of the present invention ineffective.

[0017] In some embodiments, when an opening is provided on the hole closed by the binding portion, the size of the opening is 1-1.5 times the diameter of the W-shaped elastic bar.

[0018] In some embodiments, when an opening is provided on the hole closed by the tie portion, the connecting portion has metal ductility.

[0019] According to the above-mentioned embodiment, a spring strip zinc-dip galvanizing anti-hooking tooling has a two-stage cylinder setting, so that when the cigarette pressing plate is packaging cigarette piles of different heights, it is always within a fixed distance range from the top of the cigarette pile, and the cigarette pile in the packaging process will not be scattered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the second embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the third embodiment of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the fourth embodiment of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of a fifth embodiment of the present invention;

[0025] In the figure: 1, restraining part; 11, hole; 12, opening; 2, connecting part; 3, elastic bar. DETAILED DESCRIPTION

[0026] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0028] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). Example

[0029] Please refer to Figure 1 In one embodiment, a spring bar anti-hooking tool is provided, which is used to prevent hooking during the sherardizing process of W-type spring bars. The tool includes an anti-hooking tool body, which is a steel coil spring. A part of both ends of the coil spring is a binding part 1, and a connecting part 2 is between the two binding parts. The coil of the coil spring is a closed hole 11, and the inner diameter of the coil of the coil spring is 1.2 times the diameter of the W-type spring bar. The two ends of the coil spring are respectively passed through the two ends of the W-type spring bar to seal the two ends of the W-type spring bar to prevent the W-type spring bars from hooking with each other during the sherardizing process. Example

[0030] Please refer to Figure 2In one embodiment, a spring bar anti-hooking tool is provided, which is used to prevent hooking during the sherardizing process of W-type spring bars. The tool includes an anti-hooking tool body, both ends of which are coil springs, the coil springs are made of steel, and the middle is a cylinder, which is made of round steel. The two coil springs are the restraining part 1, and the cylinder is the connecting part 2. The coils wound by the coil springs are closed holes 11, and the inner diameter of the coils wound by the coil springs is 1.3 times the diameter of the W-type spring bar. The two coil springs are respectively passed through the two ends of the W-type spring bar 3, and together with the cylinder, the two ends of the W-type spring bar 3 are blocked to prevent the W-type spring bars 3 from hooking with each other during the sherardizing process. Example

[0031] Please refer to Figure 3 In one embodiment, a tool for preventing hooking of spring bars during the sherardizing process of W-type spring bars is provided, which is used to prevent hooking. The tool includes an anti-hooking tool body, wherein the two ends of the tool are coil springs, and the middle is a straight rod, which is made of steel plate. In order to better connect with the two coil springs, the middle straight rod is arc-shaped, the two coil springs are restraining parts 1, and the arc-shaped straight rod is the connecting part 2. The coils wound by the coil springs are closed holes 11, and the inner diameter of the coils wound by the coil springs is 1.2 times the diameter of the W-type spring bar 3. The two coil springs are respectively passed through the two ends of the W-type spring bar, and together with the arc-shaped straight rod, the two ends of the W-type spring bar 3 are blocked to prevent the W-type spring bars 3 from hooking with each other during the sherardizing process. Example

[0032] Please refer to Figure 4 In one embodiment, a spring bar sherardizing anti-hooking tool is provided, which is used to prevent hooking during the W-type spring bar sherardizing process. The anti-hooking tool body is a rectangular plate with three hooks. The rectangular plate is made of a steel plate, such as a steel plate with a thickness of 5 mm. The hooks are made of steel bars, such as cylindrical steel bars or square column steel bars with a diameter of 4 mm. The hooks are welded to the steel plate, wherein the hooks are the restraining part 1 and the rectangular plate is the connecting part 2. The three hooks are arranged on the same side of the rectangular plate, and the three hooks are respectively located at both ends and the middle. The opening direction of the hooks at both ends is opposite to that of the middle hook. The shape of the hook can be an arc hook or a rectangular hook. The hook is shaped like a closed hole 11 with an opening 12. The opening 12 of the hole 11 is just set at the connection with the rectangular plate. The size of the opening 12 is 1.2 times the diameter of the W-shaped spring bar 3. The hooks at both ends respectively hook the ends of the W-shaped spring bar 3, and the middle hook hooks the middle of the W-shaped spring bar 3. The rectangular plate just blocks the two ends of the W-shaped spring bar to prevent the W-shaped spring bars 3 from hooking with each other during the sherardizing process.

[0033] In this embodiment, the hook has metallic ductility. During the sherardizing process, the hook can be bent to make the opening 12 of the hook smaller, that is, to make the opening 12 of the hole 11 with the opening 12 smaller, smaller than the diameter of the W-shaped spring bar 3, or directly staggered to embrace the W-shaped spring bar 3, so as to better restrain the W-shaped spring bar 3 and prevent the anti-hooking tool of this embodiment from falling off from the W-shaped spring bar 3 during the sherardizing process. Example

[0034] Please refer to Figure 5 In one embodiment, a spring bar sherardizing anti-hooking tool is provided, which is used to prevent hooking during the W-type spring bar sherardizing process. The anti-hooking tool body is a rectangular plate with three hooks. The rectangular plate is made of a steel plate, such as a steel plate with a thickness of 5 mm. The hooks are made of steel bars, such as cylindrical steel bars or square column steel bars with a diameter of 4 mm. The hooks are welded to the steel plate, wherein the hooks are the restraining part 1 and the rectangular plate is the connecting part 2. The three hooks are arranged on the same side of the rectangular plate, and the three hooks are respectively located at the two ends and the middle, wherein the opening direction of the hooks at the two ends is opposite to the opening direction of the middle hook. On the contrary, the shape of the hook can be an arc-shaped hook or a rectangular hook. The difference between this embodiment and the fourth embodiment is that a baffle is provided at the front end of the opening 12 of the hook, that is, the opening 12 of the hole 11 is not provided at the connection with the rectangular plate, so that both sides of the opening 12 of the hole 11 are connected to the rectangular plate. The size of the opening 12 is 1.2 times the diameter of the W-shaped elastic bar 3. The hooks at both ends respectively hook the two ends of the W-shaped elastic bar 3, and the middle hook hooks the middle of the W-shaped elastic bar 3. The rectangular plate just blocks the two ends of the W-shaped elastic bar 3 to prevent the W-shaped elastic bar 3 from hooking with each other during the sherardizing process.

[0035] In this embodiment, the hook has metallic ductility. During the sherardizing process, the hook can be bent to make the opening 12 of the hook smaller, that is, to make the opening 12 of the hole 11 with the opening 12 smaller, smaller than the diameter of the W-shaped spring bar 3, or directly staggered to embrace the W-shaped spring bar 3, so as to better restrain the W-shaped spring bar 3 and prevent the anti-hooking tool of this embodiment from falling off from the W-shaped spring bar 3 during the sherardizing process.

[0036] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A spring bar sherardizing anti-hooking tool, used to prevent hooking during the W-type spring bar sherardizing process, characterized by: The anti-hooking tool body comprises a binding portion (1) and a connecting portion (2), wherein the binding portion (1) is arranged at both ends of the connecting portion (2) or on the same side of both ends, and the binding portion (1) alone or together with the connecting portion (2) forms a closed hole (11), and the hole (11) of the binding portion (1) is used to surround the two ends of the W-shaped elastic bar, and the gap between the two ends of the W-shaped elastic bar and the connecting portion (2) is smaller than the diameter of the elastic bar.

2. The anti-hooking tool for spring bar sherardizing according to claim 1, characterized in that: The size of the closed hole (11) on the restraining portion (1) is 1-1.5 times the diameter of the W-shaped elastic bar.

3. The anti-hooking tool for spring bar sherardizing according to claim 2, characterized in that: When the binding portion (1) has a closed hole (11), the binding portion (1) has longitudinal elasticity, which facilitates the binding portion to be passed through the two ends of the W-shaped elastic strip.

4. The anti-hooking tool for spring bar sherardizing according to claim 2, characterized in that: When the restraining portion (1) has a closed hole (11), the connecting portion (2) has the same longitudinal elasticity as the restraining portion (1) or the connecting portion has rigidity.

5. The anti-hooking tool for spring bar sherardizing according to claim 1, characterized in that: The restraining portion (1) alone or together with the connecting portion (2) forms a closed hole (11) on which an opening (12) is provided.

6. The anti-hooking tool for spring bar sherardizing according to claim 5, characterized in that: When the binding portion (1) has a closed hole (11) on which an opening (12) is provided, there are three binding portions (1), two binding portions (1) are provided at the same side of both ends of the connecting portion (2), and the remaining binding portion (1) is provided in the middle of the connecting portion (2), and the three binding portions (1) are located on the same side of the connecting portion (2).

7. The anti-hooking tool for spring bar sherardizing according to claim 5, characterized in that: The direction of the opening (12) of the binding portion (1) located in the middle of the connecting portion (2) is different from the direction of the opening (12) of the binding portion (1) located on the same side of both ends of the connecting portion (2).

8. The anti-hooking tool for spring bar sherardizing according to claim 5, characterized in that: When an opening (12) is provided on the hole (11) closed by the restraining portion (1), the size of the opening (12) is 1-1.5 times the diameter of the W-shaped elastic bar.

9. The anti-hooking tool for spring bar sherardizing according to claim 5, characterized in that: When an opening (12) is provided on the hole (11) closed by the binding portion (1), the connecting portion has metal ductility.

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