Emergency hydraulic system of railway maintenance equipment

Abstract

The utility model relates to the field of rail transit construction equipment, and provides an emergency hydraulic system of railway maintenance equipment, which comprises an oil tank, a filter, a hydraulic pump, an overflow valve, a three-position four-way reversing valve, a first stop valve and a second stop valve, the hydraulic pump is respectively communicated with the overflow valve and the three-position four-way reversing valve, the other end of the overflow valve is communicated with the oil tank, the three-position four-way reversing valve is communicated with the first stop valve, and the first stop valve is respectively communicated with the second stop valve, the guide wheel oil cylinder and the guide wheel oil cylinder. And the second stop valve is respectively communicated with the hydraulic system of the equipment, the guide wheel oil cylinder and the guide wheel oil cylinder. According to the emergency hydraulic system disclosed by the utility model, when railway maintenance equipment fails and cannot go down a railway by virtue of self power, the emergency hydraulic system jacks up the equipment guide wheel oil cylinder, and drags the failed equipment away from a railway main road by virtue of external force.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit construction equipment field, concretely relates to a railway maintenance equipment emergency hydraulic system. BACKGROUND

[0002] In recent years, with the continuous renewal development of railway equipment, railway maintenance equipment is applied more and more widely. The application of railway maintenance equipment reduces manual work, reduces labor intensity, and also greatly improves work efficiency. With the increase of online base of railway maintenance equipment, some faults will inevitably occur in the construction process of railway maintenance equipment. If the fault cannot be eliminated within a short time, the equipment is required to be quickly driven off the railway line. If it cannot be driven off in time, it will cause train delay and also bring great safety risk. Especially some large railway maintenance equipment, due to its large quality, it is almost impossible to drag the faulty equipment away by external vehicles and equipment. SUMMARY

[0003] The utility model discloses a railway maintenance equipment emergency hydraulic system, when the railway maintenance equipment appears the fault, relies on the self power to be unable to go down, and the emergency hydraulic system will lift the equipment guide wheel oil cylinder, utilizes the external force to drag the faulty equipment away from the railway main road.

[0004] To achieve the above object, the utility model adopts the following technical scheme: railway maintenance equipment emergency hydraulic system, including oil tank, filter, hydraulic pump, overflow valve, three position four way reversing valve, first stop valve and second stop valve, the oil tank is communicated with the filter, the filter is communicated with the hydraulic pump, the hydraulic pump is communicated with the overflow valve and three position four way reversing valve respectively, the other end of the overflow valve is communicated with the oil tank, the three position four way reversing valve is communicated with the first stop valve, the first stop valve is communicated with the second stop valve, guide wheel oil cylinder, guide wheel oil cylinder respectively, the second stop valve is communicated with the equipment self hydraulic system, guide wheel oil cylinder, guide wheel oil cylinder respectively.

[0005] In the above technical scheme, the railway maintenance equipment emergency hydraulic system further includes a shaft coupling and a DC motor, the DC motor provides power for the hydraulic pump through the shaft coupling, and the hydraulic pump converts the mechanical energy provided by the DC motor into pressure energy to output high-pressure hydraulic oil.

[0006] In the above technical scheme, the overflow valve is used to limit the working pressure of the emergency hydraulic system, which can be adjusted according to needs.

[0007] In the above technical scheme, the three position four way reversing valve is M type middle position skill, which can be unloaded in the middle position, and is used to change the flow direction of hydraulic oil, so as to control the action direction of the actuator.

[0008] In the above technical solution, the first stop valve and the second stop valve are used for cutting off or connecting the device self hydraulic system and the emergency hydraulic system.

[0009] The utility model railway maintenance equipment emergency hydraulic system has the following beneficial effects:

[0010] 1. When the railway maintenance equipment cannot go down due to failure, the emergency hydraulic system can replace the device hydraulic system to control the guide wheel oil cylinder to complete the lifting action, and the host machine can be towed away from the main track by using external equipment.

[0011] 2. The electric-hydraulic control is simple to operate, the emergency hydraulic system is driven by a DC motor, and the power is taken from the storage battery set of the railway maintenance equipment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model railway maintenance equipment emergency hydraulic system has the following beneficial effects: DETAILED DESCRIPTION

[0013] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0014] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] As Figure 1The utility model embodiment provides a kind of railway maintenance equipment emergency hydraulic system, including oil tank 1, filter 2, hydraulic pump 3, overflow valve 4, three-position four-way reversing valve 5, first stop valve 6 and second stop valve 7, and the oil tank 1 is communicated with filter 2, filter 2 is communicated with hydraulic pump 3, hydraulic pump 3 is communicated with overflow valve 4 and three-position four-way reversing valve 5 respectively, overflow valve 4 other end is communicated with oil tank 1, and three-position four-way reversing valve 5 is communicated with first stop valve 6, and first stop valve 6 is communicated with second stop valve 7, guide wheel oil cylinder 1, guide wheel oil cylinder 2 respectively, and second stop valve 7 is communicated with equipment self hydraulic system, first guide wheel oil cylinder 8, second guide wheel oil cylinder 9 respectively.

[0017] When railway maintenance equipment works normally, second stop valve 7 opens, first stop valve 6 closes, equipment self hydraulic system is cut off with emergency hydraulic system, and equipment self hydraulic system drives first guide wheel oil cylinder 8, second guide wheel oil cylinder 9 to act.When equipment self hydraulic system has fault, cannot output power, second stop valve 7 closes, and first stop valve 6 opens.Emergency hydraulic system is communicated with guide wheel oil cylinder oil circuit, and first guide wheel oil cylinder 8, second guide wheel oil cylinder 9 can be driven to act using emergency hydraulic system.Direct current motor, three-position four-way reversing valve 5 control power source are taken from the battery of railway maintenance equipment, and it is simple to operate.

[0018] The content not described in detail in the specification belongs to the prior art known to those skilled in the art.

[0019] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the utility model embodiments.

Claims

1. An emergency hydraulic system for a railway maintenance vehicle, characterized in that: The hydraulic system comprises an oil tank, a filter, a hydraulic pump, an overflow valve, a three-position four-way reversing valve, a first stop valve and a second stop valve, the oil tank is communicated with the filter, the filter is communicated with the hydraulic pump, the hydraulic pump is communicated with the overflow valve and the three-position four-way reversing valve respectively, the other end of the overflow valve is communicated with the oil tank, the three-position four-way reversing valve is communicated with the first stop valve, the first stop valve is communicated with the second stop valve, a guide wheel oil cylinder and the guide wheel oil cylinder respectively, and the second stop valve is communicated with a hydraulic system of the equipment itself, the guide wheel oil cylinder and the guide wheel oil cylinder respectively.

2. The emergency hydraulic system for a rail maintenance vehicle of claim 1, wherein: The hydraulic system comprises a shaft coupling and a direct current motor, the direct current motor provides power for the hydraulic pump through the shaft coupling, and the hydraulic pump converts mechanical energy provided by the direct current motor into pressure energy and outputs high-pressure hydraulic oil.

3. The emergency hydraulic system for a rail maintenance vehicle of claim 1, wherein: The overflow valve is used for limiting the working pressure of the emergency hydraulic system and can be adjusted according to needs.

4. The emergency hydraulic system for a rail maintenance vehicle of claim 1, wherein: The three-position four-way reversing valve is a M-type middle position skill, can be unloaded in the middle position, and is used for changing the flow direction of the hydraulic oil, so as to control the action direction of the actuator.

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