Spring breakage indicating device for spring vibration isolator

Abstract

The utility model relates to a spring vibration isolator broken spring indicating device which comprises a broken spring indicating observation module, an indicator built-in small spring, an indicator upper portion and an indicator lower portion, the indicator upper portion and the indicator lower portion are both arranged to be of a hollow core structure, and the indicator upper portion is arranged on the outer side of the indicator lower portion in a sleeved mode. The indicator built-in small spring is arranged in the indicator upper part, and the indicator upper part and the indicator lower part are connected through the indicator built-in small spring, so that a movably connected nested structure is formed between the indicator upper part and the indicator lower part. The upper portion of the indicator and the lower portion of the indicator are opened through tension of a small spring arranged in the indicator, the upper portion structure of the indicator is made to be tightly attached to the outer sleeve cover of the vibration isolator, and the sealing problem of the hole opening position of the outer sleeve cover of the vibration isolator is solved, and the spring breaking indication observation module is located in the hole opening of the outer sleeve cover of the vibration isolator and used for indication. Maintenance personnel can check conveniently, and stumbling of the maintenance and inspection personnel is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, and particularly relates to a broken spring indicating device for a spring vibration isolator. Background Technique

[0002] The steel spring floating slab track bed is a new type of track vibration reduction structure form, which is composed of a track bed slab, a steel spring vibration isolator, a shear hinge, a lateral limiting device, a sealing strip, etc. It places a track bed slab with a certain mass and stiffness on the steel spring vibration isolator, and uses the steel spring vibration isolator to form a certain gap between the track bed and the base, constituting a mass-spring-vibration isolation system. Its principle is to insert a linear vibration isolator with a natural frequency lower than the excitation frequency between the track bed slab and the foundation, so as to reduce the vibration amount transmitted to the base, which is an effective method to reduce the vibration and noise transmitted to the lower structure. The broken spring indicator, as an important component of the steel spring vibration isolator, can be used to judge whether it works normally for later maintenance or replacement.

[0003] At present, there are some problems with the broken spring indicators of steel spring vibration isolators adopted in the floating slab track industry: there is a gap between the broken spring indicator and the observation opening on the outer sleeve cover, resulting in the lack of top sealing of the outer sleeve. During operation, it is easy to enter dust and sundries, and it is easy to fall off with the vibration of the passing train on the track bed; in addition, if there are structural tolerances or construction errors in the tunnel, the height of the broken spring indicator is often insufficient or too high. When the height is insufficient, the broken spring indicator is easy to fall off during operation, causing misjudgment by the maintenance department. When the height is too high, the broken spring indicator will protrude above the surface of the vibration isolator cover after installation, and the inspection by the maintenance department may trip people, causing labor safety problems. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The utility model provides a broken spring indicating device for a spring vibration isolator, which solves the problems in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A broken spring indicating device for a spring vibration isolator includes a broken spring indication observation module, an indicator built-in small spring, an upper part of the indicator, and a lower part of the indicator. Both the upper part of the indicator and the lower part of the indicator are hollow structures, and the upper part of the indicator is sleeved outside the lower part of the indicator. The indicator built-in small spring is arranged inside the upper part of the indicator, and the upper part of the indicator and the lower part of the indicator are connected by the indicator built-in small spring, so that a nested structure with a movable connection is formed between the upper part of the indicator and the lower part of the indicator. The broken spring indication observation module is formed on the upper end surface of the upper part of the indicator, and the broken spring indication observation module is used for broken spring indication.

[0008] Preferably, the spring isolator broken spring indicating device further includes a plurality of limit retaining rings, and the plurality of limit retaining rings are fixedly connected to the inner wall of the upper part of the indicator at intervals. The lower part of the indicator passes through the plurality of limit retaining rings. The cross-section of the limit retaining ring forms an inverted triangular structure, and a cross-shaped texture or burr is formed on the inverted triangular structure of the cross-section of the limit retaining ring.

[0009] The present invention also provides a spring isolator, which includes a broken spring indicating device composed of a broken spring indicating observation module, a small spring inside the indicator, an upper part of the indicator, and a lower part of the indicator, or a broken spring indicating device composed of a broken spring indicating observation module, a small spring inside the indicator, an upper part of the indicator, a lower part of the indicator, and a limit retaining ring. It also includes a cover of the isolator outer sleeve, a body of the isolator outer sleeve, and an inner sleeve of the isolator. An opening is formed on the cover of the isolator outer sleeve, and the broken spring indicating observation module extends into the opening. A groove is formed at the top of the inner sleeve of the isolator, and the lower end of the lower part of the indicator is inserted into the groove and fixedly connected to the inner sleeve of the isolator.

[0010] Preferably, the diameter of the opening on the cover of the isolator outer sleeve is larger than the diameter of the broken spring indicating observation module and smaller than the outer diameter of the upper part of the indicator.

[0011] More preferably, the distance between the cover of the isolator outer sleeve and the inner sleeve of the isolator is less than the natural length of the small spring inside the indicator.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the present invention provides a spring isolator broken spring indicating device, which has the following beneficial effects when used in a spring isolator:

[0014] The upper part and the lower part of the indicator are separated by the tension of the small spring inside the indicator, so that the structure of the upper part of the indicator is closely attached to the cover of the isolator outer sleeve, solving the sealing problem of the opening position of the cover of the isolator outer sleeve. And the broken spring indicating observation module is located in the opening of the cover of the isolator outer sleeve for indication, which is convenient for maintenance personnel to check and avoids tripping maintenance inspection personnel.

[0015] By adjusting the height of the spring isolator broken spring indicating device of the present invention with the small spring inside the indicator, the broken spring indicating device of one type of spring isolator can be adapted to different track structure heights and different thicknesses of the track bed slab, simplifying the product parameter models. When applied to a steel spring floating slab track bed, the installation can be made simple and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a spring isolator broken spring indicating device according to an embodiment;

[0017] Figure 2It is a structural schematic diagram of a spring vibration isolator including a broken spring indicating device for the spring vibration isolator.

[0018] In the figure: 1. Broken spring indicating device; 2. Cover of the outer sleeve of the vibration isolator; 3. Cylinder body of the outer sleeve of the vibration isolator; 4. Inner sleeve of the vibration isolator; 5. Broken spring indication observation module; 6. Small spring inside the indicator; 7. Upper part of the indicator; 8. Lower part of the indicator; 9. Limit retaining ring. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 , a broken spring indicating device for a spring vibration isolator, which may include a broken spring indication observation module 5, a small spring inside the indicator 6, an upper part 7 of the indicator, a lower part 8 of the indicator, and several limit retaining rings 9. Both the upper part 7 of the indicator and the lower part 8 of the indicator are provided with hollow structures, and the upper part 7 of the indicator is sleeved outside the lower part 8 of the indicator. The small spring 6 inside the indicator is arranged inside the upper part 7 of the indicator, and the upper part 7 of the indicator and the lower part 8 of the indicator are connected by the small spring 6 inside the indicator, so that a nested structure with movable connection can be formed between the upper part 7 of the indicator and the lower part 8 of the indicator. The broken spring indication observation module 5 is formed on the upper end face of the upper part 7 of the indicator, and the broken spring indication observation module 5 is used for broken spring indication. Several limit retaining rings 9 are fixedly connected to the inner wall of the upper part 7 of the indicator at intervals, and the lower part 8 of the indicator passes through several limit retaining rings 9. The cross section of the limit retaining ring 9 forms an inverted triangular structure, and a cross-shaped pattern or burr is formed on the inverted triangular structure of the cross section of the limit retaining ring 9. When a broken spring occurs, the limit retaining ring 9 can drive the upper part 7 of the indicator to fall by the frictional resistance between the lower part 8 of the indicator and the limit retaining ring 9 during the process of the lower part 8 of the indicator following the inner sleeve 4 of the vibration isolator to fall, so that the whole broken spring indicator 1 can follow the inner sleeve 4 of the vibration isolator to fall when a broken spring occurs.

[0021] Refer to Figure 2 , a spring vibration isolator, which includes both the cover 2 of the outer sleeve of the vibration isolator, the cylinder body 3 of the outer sleeve of the vibration isolator, and the inner sleeve 4 of the vibration isolator existing in the prior art, and may also include a broken spring indicating device 1 composed of a broken spring indication observation module 5, a small spring 6 inside the indicator, an upper part 7 of the indicator, and a lower part 8 of the indicator, or a broken spring indicating device 1 composed of a broken spring indication observation module 5, a small spring 6 inside the indicator, an upper part 7 of the indicator, a lower part 8 of the indicator, and a limit retaining ring 9.

[0022] An opening is formed in the cover 2 of the outer sleeve of the vibration isolator. The diameter of the opening in the cover 2 of the outer sleeve of the vibration isolator is larger than the diameter of the broken spring indication observation module 5, and the height of the indicator observation module is the same as the thickness of the cover, so that the broken spring indication observation module 5 can extend into the aforementioned opening. When performing maintenance inspections, the maintenance inspection personnel can check whether the broken spring indication observation module 5 exists in the opening in the cover 2 of the outer sleeve of the vibration isolator to determine whether a broken spring has occurred.

[0023] A groove is formed at the top of the inner sleeve 4 of the vibration isolator. The lower end of the lower part 8 of the indicator can be inserted into the groove and fixedly connected to the inner sleeve 4 of the vibration isolator in a positioning manner, and the horizontal limiting strength of the broken spring indicator 1 is increased.

[0024] The distance between the cover 2 of the outer sleeve of the vibration isolator and the inner sleeve 4 of the vibration isolator is less than the natural length of the built-in small spring 6 of the indicator, and the diameter of the opening in the cover 2 of the outer sleeve of the vibration isolator is less than the outer diameter of the upper part 7 of the indicator. Furthermore, the upper part 7 of the indicator can use the built-in small spring 6 of the indicator to tightly contact the cover 2 of the outer sleeve of the vibration isolator, thereby covering the opening in the cover 2 of the outer sleeve of the vibration isolator and preventing foreign objects from entering through the opening.

[0025] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, and will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring vibration isolator broken spring indicating device, characterized in that: The invention comprises a broken spring indication observation module (5), an indicator built-in small spring (6), an indicator upper part (7) and an indicator lower part (8), wherein the indicator upper part (7) and the indicator lower part (8) are both arranged as hollow structures, and the indicator upper part (7) is sleeved on the outer side of the indicator lower part (8), the indicator built-in small spring (6) is arranged in the indicator upper part (7), and the indicator upper part (7) and the indicator lower part (8) are connected by the indicator built-in small spring (6), so that a nested structure with movable connection is formed between the indicator upper part (7) and the indicator lower part (8), and the broken spring indication observation module (5) is formed on the upper end surface of the indicator upper part (7), and the broken spring indication observation module (5) is used for broken spring indication.

2. The spring vibration isolator broken spring indicating device according to claim 1, wherein: It also includes a plurality of limit stop rings (9), which are fixedly connected to the inner wall of the indicator upper part (7) at intervals and distribution, and the indicator lower part (8) passes through the plurality of limit stop rings (9).

3. The spring vibration isolator broken spring indicating device according to claim 2, characterized in that: The cross section of the position limiting retaining ring (9) forms an inverted triangle structure, and cross lines or burrs are formed on the inverted triangle structure of the cross section of the position limiting retaining ring (9).

4. A spring vibration isolator, comprising a broken spring indicating device (1) composed of a broken spring indicating and observing module (5), a small spring built into the indicator (6), an upper part of the indicator (7), and a lower part of the indicator (8), or a broken spring indicating device (1) composed of a broken spring indicating and observing module (5), a small spring built into the indicator (6), an upper part of the indicator (7), a lower part of the indicator (8), and a limit retaining ring (9), further comprising a cover of the vibration isolator outer sleeve (2), a body of the vibration isolator outer sleeve (3), and an inner sleeve of the vibration isolator (4), characterized in that, An opening is formed on the outer sleeve cover (2) of the vibration isolator, the broken spring indication observation module (5) extends into the opening, a groove is formed on the top of the inner sleeve (4) of the vibration isolator, the lower end of the lower part (8) of the indicator is inserted into the groove and fixedly connected to the inner sleeve (4) of the vibration isolator.

5. A spring vibration isolator according to claim 4, characterized in that: The diameter of the opening on the outer sleeve cover (2) of the vibration isolator is larger than the diameter of the broken spring indication observation module (5) and smaller than the outer diameter of the indicator upper part (7).

6. A spring vibration isolator according to claim 5, characterized in that: The distance between the outer sleeve cover (2) of the vibration isolator and the inner sleeve (4) of the vibration isolator is smaller than the natural length of the small spring (6) built into the indicator.

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