A spring compensator

Abstract

The present invention proposes a constant tension spring compensator with a function of detecting spring fracture, comprising: a housing, a spring, and a spring fracture detection mechanism; at least a portion of the spring fracture detection mechanism is arranged outside the housing, and is configured to be driven by the spring to change when the spring fractures, so that the fracture state of the spring can be observed from outside the housing. The beneficial effect of the present invention is that the fracture failure state of the spring, which is the core component of the constant tension spring compensator, can be monitored, and the method is simple and reliable.

Description

Technical Field

[0001] The invention relates to the field of railway contact network compensation systems, and in particular to a constant tension spring compensator. Background Art

[0002] The constant tension spring compensator for railway contact network generally has a cylindrical appearance, with a cylindrical shell on the outside, a central axis in the center, and a spring installed between the central axis and the shell. The spring is the core component of the constant tension spring compensator for railway contact network, and it is the power source for tension output. The shell is rigid and sealed, so the state of the spring cannot be observed from the outside, so it is not easy to be discovered if the spring breaks or fails. There are technical means in the market to monitor the output tension deviation through some devices, but these mechanisms and devices themselves have high reliability requirements, and it is easy to lose the meaning of monitoring the tension deviation due to their own failure. Therefore, this patent specifically proposes a failure monitoring device for the spring itself, which is a core component. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is: how to simply and reliably monitor the fracture failure of the spring in the constant tension spring compensator.

[0004] In order to solve the above problems, the present invention proposes a constant tension compensator with a spring fracture detection function, comprising: a housing, a spring, and a spring fracture detection mechanism; the spring fracture detection mechanism comprises:

[0005] A rupture state recognition transmission component, configured to be driven by the spring to move when the spring is broken;

[0006] The fracture state presenting component has a normal state and a warning state.

[0007] The idea of ​​the present invention is to detect the fracture failure state of the spring from inside the shell, and then transmit the fracture failure state to the outside of the shell, stably presenting a certain state outside the shell to indicate the fracture failure state of the spring, so that the fracture failure state can be easily and directly observed. In addition, in order to avoid the failure of the detection device itself, the detection device itself strives to be simple and reliable.

[0008] The fracture state presenting component has two states: a normal state and a warning state. When the spring is not broken, it is in the normal state. When the spring is broken, it changes from the normal state to the warning state under the action of the fracture state identification and transmission component. The state of the fracture state presenting component is visible from the outside of the housing.

[0009] The fracture state identification and transmission component is configured to move under the push of the spring when the spring breaks and fails, thereby changing the state of the fracture state presenting component from a normal state to a warning state through movement.

[0010] Furthermore, the fracture state presenting component is installed outside the shell, and the fracture state identification transmission component is a force transmission pin, which passes through the shell through the opening and is configured to move from the inside to the outside when the spring breaks and fails, pushing the fracture state presenting component to change the fracture state presenting component from a normal state to a warning state.

[0011] Preferably, the end of the force transmission pin on the inner side of the housing is enlarged.

[0012] Furthermore, the force transmission pin is installed on the side of the shell.

[0013] Preferably, it includes more than one force transmission pin and more than one fracture state presenting component.

[0014] Furthermore, the shell includes a tough portion, which is configured such that when the spring is in a normal state, the tough portion is inwardly convex, and when the spring is in a broken failure state, the tough portion is squeezed from the inside to the outside to be outwardly convex.

[0015] Furthermore, the fracture state presenting component is installed outside the housing, and when the toughness portion protrudes outward, it pushes the fracture state presenting component to change from a normal state to a warning state.

[0016] Preferably, the flexible portion is located on the side of the housing.

[0017] Preferably, more than one tough portion is included.

[0018] Preferably, more than one fracture state presenting member is included.

[0019] Furthermore, it includes a rope-like body, one end of which is fixed to the inner wall of the shell, and then wrapped around the outer periphery of the spring to form a loop on the outer periphery of the spring and pass through the opening of the shell, and the other end is connected to a fracture state presenting component, and the fracture state presenting component is installed outside the shell. The rope-like body is configured so that when the spring breaks and fails, the outer periphery expands and stretches the loop formed by the rope-like body in the shell, thereby pulling the rope-like body outside the shell inward, pulling the fracture state presenting component to change from a normal state to a warning state.

[0020] Preferably, the rope-shaped body passes through a plurality of rings fixed on the inner wall of the housing.

[0021] Preferably, the rope-shaped body passes through an opening at the top end of the housing.

[0022] Preferably, the rope-shaped body passes through an opening on a side of the housing.

[0023] Furthermore, it includes more than one rope-like body and correspondingly more than one broken state presentation component.

[0024] Furthermore, the broken state presenting component is a warning block, which is fixed to the outer shell with a thin rope and will separate from the outer shell under the action of gravity after being hit or pulled.

[0025] Furthermore, the spring fracture detection mechanism comprises: an alarm circuit, a pressure sensor;

[0026] The pressure sensor is installed on the inner wall of the housing, and the pressure sensor is communicatively connected with the alarm circuit;

[0027] The pressure sensor is configured to be compressed by the spring to generate a sensing signal when the spring breaks, thereby further sending the sensing signal to the alarm circuit so that the alarm circuit sends an alarm signal.

[0028] Furthermore, the alarm circuit includes a light-emitting and / or sound-emitting element and is configured to emit light and / or sound upon receiving a sensing signal from the pressure sensor.

[0029] Furthermore, the alarm circuit is configured to be able to send an alarm signal through the network, and the alarm signal sent can be further processed, for example, stored on a network server, accessible through a computer, mobile phone APP, etc., or actively pushed to a computer or mobile phone.

[0030] The beneficial effect of the present invention is that the fracture failure state of the core component spring of the constant tension spring compensator can be monitored, and the method is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is the appearance diagram of the constant tension spring compensator under the prior art;

[0032] Figure 2 A radial cross-sectional view of a spring in a normal state according to an embodiment of the present invention;

[0033] Figure 3 is a radial cross-sectional view of an embodiment of the present invention in a spring fracture failure state;

[0034] Figure 4 is a radial cross-sectional view of another embodiment of the present invention when the spring is in a normal state;

[0035] Figure 5 is a radial cross-sectional view of another embodiment of the present invention in a spring fracture failure state;

[0036] Figure 6 is a radial cross-sectional view of another embodiment of the present invention when the spring is in a normal state;

[0037] Figure 7 is a radial cross-sectional view of yet another embodiment of the present invention in a spring fracture failure state;

[0038] Figure 8 It is a schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following describes the preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0040] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0041] like Figure 1 As shown, the existing constant tension spring compensator for railway contact network generally has a cylindrical appearance, with a cylindrical outer shell on the outside, including side surfaces and two end surfaces, a central axis in the middle, and two ends of the central axis hinged to the two end surfaces of the outer shell. The central axis is fixed to the mounting frame, and the outer shell can rotate around the central axis. A vortex spring is installed between the central axis and the outer shell. One end of the vortex spring is fixed to the central axis, and the other end is fixed to the outer shell. Constant tension is provided to the outside through the vortex spring. The outer shell is rigid and sealed as a whole, so the state of the spring cannot be observed from the outside. The idea of ​​the present invention is to detect the fracture failure state of the spring from inside the shell, and then transmit this fracture failure state to the outside of the shell, and stably present a certain state outside the shell to indicate that the spring is in a fracture failure state, which can be easily and directly observed from the outside of the shell. In addition, in order to avoid failure of the detection itself, the detection device itself strives to be simple and reliable.

[0042] like Figure 2 The figure shows a radial cross-section of a constant tension spring compensator, in which the spring 02 is in normal working condition. One end of the spring 02 is fixed to the housing 01, and the other end is fixed to the central axis 03, and the spring 02 is in a tensioned state. At this time, each coil of the spring 02 is subjected to great stress, especially near the axis 03, where the bending radius of the spring 02 is small and the stress is maximum. In the most extreme case, the spring 02 may break at the point of maximum stress, causing the tension of the constant tension compensator to decrease, thereby affecting the overall performance of the contact network. Therefore, it is extremely important to reliably identify the breakage and failure of the spring 02.

[0043] The spring fracture identification device comprises: a fracture state identification transmission component and a fracture state presentation component.

[0044] like Figure 2 , 3As shown, in one embodiment, a force transmission pin 04 is provided on the housing 01. The force transmission pin 04 passes through the housing 01 through an opening 06 on the housing and can move from inside to outside in a radial direction. The diameter of the opening 06 matches the diameter of the force transmission pin 04. Figure 2 As shown, the spring 02 is in normal working condition, and the force transmission pin 04 is located close to the central axis 03. When the spring breaks, Figure 3 As shown, under the action of its own elastic force, the outer ring of the spring 02 will quickly expand to the inner wall of the shell 01, thereby driving the force transmission pin 04 to move in the radial direction away from the central axis 03, and a part of the force transmission pin 04 passes through the shell 01 and hits the warning block 05, causing it to break away from the shell, thereby indicating that the spring 02 is in a failed state. In this embodiment, the force transmission pin 04 acts as a fracture state identification and transmission component, and the warning block 05 acts as a fracture state presentation component.

[0045] In this embodiment, the warning block 05 is fixed to the housing with a thin steel wire rope. After being hit, it is separated from the housing under the impact force and gravity, so that the patrol maintenance personnel can easily find the spring break and replace it with a new spring constant tension compensator in time. In other embodiments, the warning block 05 can be any other device that can stably represent two states, for example, a flag that is rolled up in the normal state is opened under the action of the force transmission pin 04, and the flag can have obvious colors or patterns, which is easier to see; or it can be a circuit that can transmit radio signals. In the normal state, it transmits normally, and the force transmission pin 04 can turn off its switch, and the radio signal is interrupted.

[0046] In this embodiment, the end of the force transmission pin 04 close to the central axis 03 is enlarged, and the diameter of the enlarged part is larger than the diameter of the opening 06. When the spring breaks and hits the force transmission pin 04, the enlarged end can prevent the entire force transmission pin 04 from passing through the housing 01. The enlarged end is designed to continue to seal the housing 01, and is not necessary for the fracture monitoring function. In another embodiment, the force transmission pin may not be designed with an enlarged end, as long as it can move radially outward under the push of the broken spring to change the state of the warning device 05, without affecting the monitoring effect.

[0047] like Figure 4 , 5 As shown, in another embodiment, the rigid housing 01 includes a tough portion 14 that can be partially convex inward and outward, and when the spring 02 is in a normal state, as shown in FIG. Figure 4 As shown, the toughness portion 14 is inwardly convex. When the spring 02 is in a fracture failure state, as shown in FIG. Figure 5 As shown, the tough portion 14 is squeezed from the inside to the outside to make it convex, so that the state of the spring 02 can be understood by directly observing the state of the tough portion 14 from the outside of the housing 01. In this embodiment, the tough portion 14 acts as a fracture state identification and transmission component and a fracture state presentation component at the same time.

[0048] In other embodiments, the tough portion 14 may further push the warning device 05 by protruding outward to change its state.

[0049] In another embodiment, if Figure 6 , 7 As shown, it includes a rope-like body 24, one end of which is fixed to the inner wall of the housing 01 at the fixing ring 07, and then wrapped around the outer periphery of the spring 02, forming a loop around the outer periphery of the spring, passing through the opening 06 on the side of the housing, and the other end is connected to the warning device 05. Figure 6 As shown, it is a normal state, the rope-shaped body 24 fixes the warning device 05 to the surface of the housing 01; Figure 7 As shown, when the spring 02 breaks and fails, the outer periphery of the spring 02 expands, stretching the rope-shaped body 24 in the shell, thereby pulling the rope-shaped body 24 outside the shell inward, the rope-shaped body 24 breaks, and the warning device 05 is separated from the shell 01. In this embodiment, the rope-shaped body 24 acts as a breaking state identification and transmission component, and the warning device 05 acts as a breaking state presentation component.

[0050] Preferably, the arc of the loop formed by the rope-like body 24 around the spring 02 is greater than 180 degrees.

[0051] In another embodiment, the opening is located at the top of the shell, rather than the side, and the rope can pass through a plurality of rings fixed on the inner wall of the shell so as to extend from the side of the shell to the top, and then pass through the opening at the top.

[0052] In another embodiment, Figure 8 As shown (the two top ends of the housing are not shown in the figure), the number of the force transmission pins can be single or multiple and distributed around the cylinder. Correspondingly, the warning device can also be single or multiple, and multiple force transmission pins can also hit the same warning device.

[0053] In another embodiment, the number of the tough portion 14 can be single or multiple and distributed around the cylinder.

[0054] In another embodiment, there may be multiple rope-shaped bodies 24 , and the openings thereof may be disposed on the side or top of the housing 01 .

[0055] Preferably, the force transmission pin 04 is made of a material with a certain hardness and can move under the elastic force of a spring.

[0056] In another embodiment, the spring fracture identification device is not a mechanical component but an electronic component, specifically including: an alarm circuit and a pressure sensor; the pressure sensor is installed on the inner wall of the housing, and the pressure sensor is connected to the alarm circuit for communication; in this case, the sensor acts as a fracture state identification transmission component, and the alarm circuit acts as a fracture state presentation component.

[0057] When the spring breaks, the pressure sensor is squeezed by the spring to generate an induction signal, which is further sent to the alarm circuit, and the alarm circuit sends an alarm signal.

[0058] The alarm circuit includes a light-emitting and / or sound-emitting element, which emits light and / or sound when receiving a sensing signal from the pressure sensor.

[0059] The alarm circuit can also send out an alarm signal through the network. The alarm signal sent out can be further processed, for example, stored on a network server, accessed through a computer, mobile phone APP, etc., or actively pushed to a computer or mobile phone.

[0060] The invention has a simple and reliable structure and can intuitively present the state of the spring enclosed inside the shell.

[0061] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A spring compensator, It is characterized in that include: Housing, spring, spring fracture detection mechanism; The spring is fixed inside the housing and maintained in a tensioned state; At least a portion of the spring breakage detection mechanism is disposed outside the housing and is configured to be driven by the spring to change when the spring breaks, so that the breakage state of the spring can be observed from outside the housing; The spring break detection mechanism comprises a rope-shaped body and a warning device, wherein one end of the rope-shaped body is fixed to the inner wall of the shell, extends around the outer periphery of the spring, and passes through the shell, and the other end of the rope-shaped body passing through the shell is connected to the warning device, and the warning device is installed outside the shell; the warning device has a normal state and a warning state, when the spring is not broken, the warning device is fixed to the surface of the shell and is in the normal state; and when the spring is broken, the warning device is configured to be driven by the rope-shaped body to detach from the shell, and change from the normal state to the warning state; The rope-like body is configured such that when the spring breaks, the rope-like body can be stretched open by the enlarged periphery of the spring, thereby pulling the rope-like body toward the inside of the housing, thereby pulling the warning device to change from the normal state to the warning state.

2. The spring compensator according to claim 1, Features: The housing includes a side surface and two opposite end surfaces; The spring compensator further comprises a central shaft, both ends of which are hinged to two end surfaces of the shell; The spring is a vortex spring, one end of which is fixed to the housing, and the other end of which is fixed to the central shaft.

3. The spring compensator according to claim 1, Features: The rope-like body passes inside the housing through one or more rings fixed on the inner wall of the housing.

4. The spring compensator according to claim 1, It is characterized in that The rope-shaped body passes through an opening located at an end surface of the housing.

5. The spring compensator according to claim 1, It is characterized in that The rope-shaped body passes through an opening located on a side surface of the housing.

6. The spring compensator according to claim 1, It is characterized in that It comprises one or more rope-shaped bodies, and one or more warning devices corresponding to the rope-shaped bodies.

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