Low speed running gear for a railway engineering vehicle

Abstract

The application discloses a low-speed walking mechanism for a railway engineering vehicle and relates to the technical field of railway construction, which comprises a driving mechanism and a stretching mechanism arranged below a vehicle frame, wherein the driving mechanism comprises a connecting rod, a connecting shaft and a driving device; the upper end of the connecting rod is hinged to the vehicle frame through a first mounting seat, and the lower end of the connecting rod is connected with the connecting shaft; the two ends of the connecting shaft are respectively provided with driving wheels; the driving device is installed on the connecting shaft and used for driving the driving wheels to rotate; one end of the stretching mechanism is connected with the vehicle frame, and the other end of the stretching mechanism is connected with the connecting rod and used for driving the connecting rod to rotate around the hinge joint of the connecting rod and the first mounting seat, so that the driving wheels are controlled to be attached to a steel rail or a wheel, and the walking of the railway engineering vehicle is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway construction technology, in particular to a low-speed walking mechanism for a railway engineering vehicle. BACKGROUND

[0002] Railway line maintenance is an important guarantee for railway transportation safety. The existing railway engineering vehicles generally have power-driven bogies for walking. Some railway engineering vehicles do not have power and need to be connected to a traction vehicle for traction operation. According to the current line maintenance operation conditions, the railway engineering vehicle needs to walk at low speed for a long time to complete the operation. The power of the existing railway engineering vehicle is a high-power engine or a battery, which causes great waste when walking at low speed for a long time. Moreover, the railway engineering vehicle is not flexible and is inconvenient to operate frequently, which is low in efficiency. SUMMARY

[0003] In view of the defects in the prior art, the purpose of the present application is to provide a low-speed walking mechanism for a railway engineering vehicle, which can replace the power-driven bogie for walking and also provide low-speed walking for the power-free engineering vehicle, thereby providing convenience for railway line maintenance operation, improving efficiency, and saving cost.

[0004] To achieve the above purpose, the technical solution adopted by the present application is as follows: a low-speed walking mechanism for a railway engineering vehicle, comprising a driving mechanism and a stretching mechanism arranged below a vehicle frame, the driving mechanism comprising a connecting rod, a connecting shaft and a driving device; the upper end of the connecting rod is hinged to the vehicle frame through a first mounting seat, and the lower end of the connecting rod is connected to the connecting shaft; the two ends of the connecting shaft are respectively provided with driving wheels; the driving device is installed on the connecting shaft and used to drive the driving wheels to rotate; one end of the stretching mechanism is connected to the vehicle frame, and the other end of the stretching mechanism is connected to the connecting rod, used to drive the connecting rod to rotate around the hinge point of the connecting rod and the first mounting seat, thereby controlling the driving wheels to adhere to the steel rail or the wheels to realize the walking of the railway engineering vehicle.

[0005] On the basis of the above technical solution, the driving device is a hydraulic motor assembly driving device, which directly drives the driving wheels to walk through the axle.

[0006] On the basis of the above technical solution, the driving device is an electric motor driving device.

[0007] On the basis of the above technical solution, the stretching mechanism comprises a stretching oil cylinder, the cylinder body of the stretching oil cylinder is hinged to the vehicle frame through a second mounting seat, and the piston rod of the stretching oil cylinder is hinged to the connecting rod through a connecting seat.

[0008] On the basis of the above technical scheme, the stretching mechanism and the driving mechanism are sequentially arranged in front of the target wheel, when the piston rod of the stretching oil cylinder is completely stretched out, the driving wheel is just closely combined with the steel rail, and the low-speed walking operation is completed; when the piston rod of the stretching oil cylinder is completely retracted, the driving wheel is separated from the steel rail, and the walking mechanism is in a non-working state.

[0009] On the basis of the above technical scheme, the driving mechanism and the stretching mechanism are sequentially arranged in front of the target wheel, when the piston rod of the stretching oil cylinder is completely stretched out, the driving wheel is just closely combined with the target wheel, and the low-speed walking operation is completed; when the piston rod of the stretching oil cylinder is completely retracted, the driving wheel is separated from the target wheel, and the walking mechanism is in a non-working state.

[0010] On the basis of the above technical scheme, the driving wheel is a rubber wheel.

[0011] On the basis of the above technical scheme, the driving wheel is a steel wheel, and the outer circular surface of the steel wheel is provided with a friction layer for increasing the friction.

[0012] On the basis of the above technical scheme, the friction layer is a rubber layer.

[0013] On the basis of the above technical scheme, the connecting place of the stretching oil cylinder and the second mounting seat, the connecting place of the stretching oil cylinder and the connecting rod, and the connecting place of the connecting rod and the first mounting seat are all provided with a pin shaft.

[0014] The beneficial effects of the present application are:

[0015] Compared with the prior art, the present application can replace the walking of the power-driven bogie, can meet the demand of low-speed walking during railway operation, and does not need diesel engine working during walking, has no tail gas emission, is more suitable for operation in a tunnel, and provides convenience for railway line maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the low-speed walking mechanism in the embodiment one of the present application;

[0017] Figure 2 It is a structure schematic view of the low-speed walking mechanism in the embodiment one of the present application; Figure 1 It is a structure schematic view of the stretching mechanism after contraction;

[0018] Figure 3 It is a top view of the low-speed walking mechanism in the embodiment one of the present application;

[0019] Figure 4 It is an enlarged schematic view of the driving mechanism and the stretching mechanism in the embodiment one of the present application;

[0020] Figure 5 It is a working principle view of the low-speed walking mechanism in the embodiment one of the present application;

[0021] Figure 6 Structure schematic diagram of low-speed walking mechanism in embodiment two of the present application;

[0022] Figure 7 Structure schematic diagram of low-speed walking mechanism in embodiment two of the present application; Figure 6 Structure schematic diagram of low-speed walking mechanism in embodiment two of the present application;

[0023] Figure 8 Structure schematic diagram of low-speed walking mechanism in embodiment two of the present application;

[0024] Figure 9 Structure schematic diagram of low-speed walking mechanism in embodiment two of the present application;

[0025] Reference signs:

[0026] 1 - frame; 2 - wheel; 3 - driving mechanism; 31 - connecting shaft; 32 - driving wheel; 33 - driving device; 34 - connecting rod; 35 - first mounting seat; 36 - connecting seat; 4 - stretching mechanism; 41 - stretching oil cylinder; 42 - second mounting seat. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout.

[0028] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0029] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more of the features, and the meaning of "several", "several" in the description of the present application is two or more, unless otherwise specifically limited.

[0030] The technical scheme of the present application and its beneficial effects will be clearer and more explicit by further description of the specific embodiments of the present application in combination with the accompanying drawings of the specification. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, but cannot be understood as a limitation of the present application.

[0031] Embodiment one

[0032] Referring to Figures 1-5 As shown in the figure, the embodiment of the present application provides a low-speed walking mechanism for a railway engineering vehicle, which comprises a driving mechanism 3 and a stretching mechanism 4 arranged below a vehicle frame 1,

[0033] The driving mechanism 3 comprises a connecting rod 34, a connecting shaft 31 and a driving device 33;

[0034] The upper end of the connecting rod 34 is hinged to the vehicle frame 1 through a first mounting seat 35, and the lower end of the connecting rod 34 is connected to the connecting shaft 31;

[0035] Both ends of the connecting shaft 31 are respectively provided with a driving wheel 32;

[0036] The driving device 33 is installed on the connecting shaft 31 and used to drive the driving wheel 32 to rotate;

[0037] One end of the stretching mechanism 4 is connected to the vehicle frame 1, and the other end of the stretching mechanism 4 is connected to the connecting rod 34, which is used to drive the connecting rod 34 to rotate around the hinge point of the connecting rod 34 and the first mounting seat 35, so as to control the driving wheel 32 to be in close contact with the steel rail or the vehicle wheel 2 to realize the walking of the railway engineering vehicle. Specifically, the stretching mechanism 4 comprises a stretching oil cylinder 41, the cylinder body of the stretching oil cylinder 41 is hinged to the vehicle frame 1 through a second mounting seat 42, and the piston rod of the stretching oil cylinder 41 is hinged to the connecting rod 34 through a connecting seat 36. The stretching of the stretching oil cylinder is in an electric control mode, and the stretching oil cylinder has a locking function.

[0038] Specifically, the driving device 33 is a hydraulic driving device 33 or a motor driving device 33. Both driving power modes are in an electric control mode.

[0039] In this embodiment, the stretching mechanism 4 and the driving mechanism 3 are arranged in front of the target vehicle wheel 2 in sequence. When the piston rod of the stretching oil cylinder 41 is fully extended, the driving wheel 32 is just in close contact with the steel rail, and the friction between the driving wheel and the engineering vehicle wheel drives the engineering vehicle to walk, so as to complete the purpose of low-speed walking operation; when the piston rod of the stretching oil cylinder 41 is fully retracted, the driving wheel 32 is separated from the steel rail surface, and at this time, the walking mechanism is in a non-working state. In this embodiment, the driving wheel 32 is a rubber wheel.

[0040] Specifically, the connection between the stretching oil cylinder 41 and the second mounting seat 42, the connection between the stretching oil cylinder 41 and the connecting rod 34, and the connection between the connecting rod 34 and the first mounting seat 35 are all provided with a pin shaft.

[0041] Embodiment Two

[0042] Referring to Figures 6-9 As shown in the drawings, the embodiment of the present application provides a low-speed walking mechanism for a railway engineering vehicle, which comprises a driving mechanism 3 and a stretching mechanism 4 arranged below a vehicle frame 1,

[0043] The driving mechanism 3 comprises a connecting rod 34, a connecting shaft 31 and a driving device 33.

[0044] The upper end of the connecting rod 34 is hinged to the vehicle frame 1 through a first mounting seat 35, and the lower end of the connecting rod 34 is connected to the connecting shaft 31.

[0045] Both ends of the connecting shaft 31 are respectively provided with a driving wheel 32.

[0046] The driving device 33 is installed on the connecting shaft 31 and used to drive the driving wheel 32 to rotate.

[0047] One end of the stretching mechanism 4 is connected to the vehicle frame 1, and the other end of the stretching mechanism 4 is connected to the connecting rod 34, which is used to drive the connecting rod 34 to rotate around the hinge point of the connecting rod 34 and the first mounting seat 35, so as to control the driving wheel 32 to be in close contact with the target wheel 2 or the wheel 2 to realize the walking of the railway engineering vehicle. Specifically, the stretching mechanism 4 comprises a stretching oil cylinder 41, the cylinder body of the stretching oil cylinder 41 is hinged to the vehicle frame 1 through a second mounting seat 42, and the piston rod of the stretching oil cylinder 41 is hinged to the connecting rod 34 through a connecting seat 36. The stretching oil cylinder is in an electric control mode, and has a locking function.

[0048] Specifically, the driving device 33 is a hydraulic driving device 33 or a motor driving device 33. Both driving power modes are in an electric control mode.

[0049] In the embodiment, the driving mechanism 3 and the stretching mechanism 4 are arranged in front of the target wheel 2 in sequence. When the piston rod of the stretching oil cylinder 41 is fully extended, the driving wheel 32 is just in close contact with the target wheel 2, so as to complete the purpose of low-speed walking operation; when the piston rod of the stretching oil cylinder 41 is fully retracted, the driving wheel 32 is separated from the target wheel 2, and at this time, the walking mechanism is in a non-operation state. In the embodiment, the driving wheel 32 is a steel wheel, and the outer circular surface of the steel wheel is provided with a friction layer for increasing the friction thereof. Specifically, the friction layer is a rubber layer or other material for increasing the friction.

[0050] Specifically, the connection between the stretching oil cylinder 41 and the second mounting seat 42, the connection between the stretching oil cylinder 41 and the connecting rod 34, and the connection between the connecting rod 34 and the first mounting seat 35 are all provided with a pin shaft.

[0051] The present application makes the driving wheel fall on the rail or stick to the wheel of the engineering vehicle according to the different position of the connecting rod mounting seat, and finally drives the driving wheel to drive the running by the driving device. When the driving wheel acts on the rail, it directly drives the engineering vehicle to run at low speed; when the driving wheel acts on the wheel of the engineering vehicle, it drives the engineering vehicle to run at low speed by the friction force between the rubber wheel and the wheel of the engineering vehicle.

[0052] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application, and the illustrative description of the above terms in the specification does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The present application is not limited to the above-mentioned embodiments, and for those skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements are also considered within the protection scope of the present application. The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. A low-speed walking mechanism for a railway engineering vehicle, comprising a driving mechanism (3) and a stretching mechanism (4) arranged below a vehicle frame (1), characterized in that: the driving mechanism (3) comprises a connecting rod (34), a connecting shaft (31) and a driving device (33); an upper end of the connecting rod (34) is hinged to the vehicle frame (1) through a first mounting seat (35), and a lower end of the connecting rod (34) is connected to the connecting shaft (31); both ends of the connecting shaft (31) are respectively provided with a driving wheel (32); the driving device (33) is installed on the connecting shaft (31) and used to drive the driving wheel (32) to rotate; one end of the stretching mechanism (4) is connected to the vehicle frame (1), and the other end of the stretching mechanism (4) is connected to the connecting rod (34) and used to drive the connecting rod (34) to rotate around the hinge point of the connecting rod (34) and the first mounting seat (35), so as to control the driving wheel (32) to be in close contact with a steel rail or a target wheel (2) to realize walking of the railway engineering vehicle; the stretching mechanism (4) comprises a stretching oil cylinder (41), a cylinder body of the stretching oil cylinder (41) is hinged to the vehicle frame (1) through a second mounting seat (42), and a piston rod of the stretching oil cylinder (41) is hinged to the connecting rod (34) through a connecting seat (36); the stretching mechanism (4) and the driving mechanism (3) are arranged in front of the target wheel (2) in sequence, when the piston rod of the stretching oil cylinder (41) is fully extended, the driving wheel (32) is just in close contact with the steel rail or the target wheel (2), and the purpose of low-speed walking operation is achieved; when the piston rod of the stretching oil cylinder (41) is fully retracted, the driving wheel (32) is separated from the steel rail or the target wheel (2), and at this time, the walking mechanism is in a non-operation state; the connection between the stretching oil cylinder (41) and the second mounting seat (42), the connection between the stretching oil cylinder (41) and the connecting rod (34), and the connection between the connecting rod (34) and the first mounting seat (35) are all provided with a pin shaft. The driving device (33) is a hydraulic motor assembly driving device (33) which directly drives the driving wheel (32) to walk through an axle. The driving device (33) is an electric motor driving device (33) or a hydraulic motor driving device. The driving wheel (32) is a rubber wheel. The driving wheel (32) is a steel wheel, and an outer circular surface of the steel wheel is provided with a friction layer for increasing friction. The friction layer is a rubber layer. ​ ​ ​ 2. A low speed running gear for a railway maintenance vehicle as claimed in claim 1 wherein: ​ 3. The low speed running gear for a railway maintenance vehicle of claim 1 wherein: ​ 4. The low speed running gear for a railway maintenance vehicle of claim 1 wherein: ​ 5. The low speed running gear for a railway maintenance vehicle of claim 1 wherein: ​ 6. A low speed running gear for a railway maintenance vehicle as claimed in claim 5 wherein: ​

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