Opening and closing device and opening and closing method for locomotive cabin door

Abstract

The invention provides an opening and closing device for a cabin door of a locomotive, which comprises an oil tank, an oil cylinder arranged on the locomotive, an oil rod arranged in the oil cylinder and connected with the cabin door of the locomotive, and a control module arranged between the oil tank and the oil cylinder, the output end of the control module is provided with a first oil way and a second oil way which are arranged in parallel and connected with the first cavity and the second cavity respectively.

Description

Technical Field

[0001] The present invention relates to the field of locomotive control equipment for rail transit, and in particular to an opening and closing device for a locomotive door, and an opening and closing method. Background Art

[0002] At present, due to the rapid development of the railway industry, a large number of shunting locomotives are used in various locomotive depots. Shunting locomotives refer to locomotives used for shunting operations such as train formation, dismantling, line switching, and vehicle delivery. Their working characteristics are frequent starting and stopping. However, traditional locomotive doors are fixed to the side walls with a full circle of bolts around them. Therefore, during maintenance operations, the full circle of bolts must be completely removed to work normally, which will cause problems such as long time consumption and low operating efficiency.

[0003] Therefore, it is desired in the art to provide an opening and closing device for a locomotive door to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to propose an opening and closing device for a locomotive cabin door, which can be remotely controlled through a control module, and further realize remote control of the downward closing or upward opening action of the locomotive cabin door, thereby significantly improving the operating efficiency and further reducing the intensity of the operation.

[0005] According to a first aspect of the present invention, there is provided an opening and closing device for a locomotive cabin door, comprising an oil tank, an oil cylinder arranged on the locomotive, an oil rod connected to the locomotive cabin door being arranged in the oil cylinder, and

[0006] A control module is arranged between the oil tank and the oil cylinder,

[0007] A first chamber and a second chamber separated by the oil rod are formed in the oil cylinder, and a first oil circuit and a second oil circuit which are arranged in parallel and respectively connected to the first chamber and the second chamber are provided at the output end of the control module.

[0008] In one embodiment, an electromagnetic reversing valve is provided in the control module, and the electromagnetic reversing valve is configured to select the first oil circuit or the second oil circuit to be connected to the oil tank.

[0009] In one embodiment, a gear pump is further provided between the oil tank and the control module.

[0010] Among them, when the first oil circuit is connected to the oil tank, the gear pump drives the hydraulic oil into the first chamber and drives the locomotive cabin door to flip down and close through the oil rod; when the second oil circuit is connected to the oil tank, the gear pump drives the hydraulic oil into the second chamber and drives the locomotive cabin door to flip up and open through the oil rod.

[0011] In one embodiment, a superimposed hydraulically controlled one-way valve arranged in series with the electromagnetic reversing valve is further provided in the control module.

[0012] In one embodiment, the opening and closing device further includes a manual pump connected to the oil tank, and a manual reversing valve connected to the manual pump and arranged in parallel with the control module.

[0013] In one embodiment, conversion joints are provided on both the first oil circuit and the second oil circuit.

[0014] A third oil circuit and a fourth oil circuit which are arranged in parallel and are respectively connected to the two conversion joints are provided at the output end of the manual reversing valve.

[0015] In one embodiment, an oil return pipeline is provided on the oil tank, and the opening and closing device also includes a three-way joint connected to the control module, the manual reversing valve and the oil return pipeline respectively, and an overflow valve and a pressure gauge arranged in series on the oil return pipeline.

[0016] According to a second aspect of the present invention, there is provided an opening and closing method, comprising the following steps:

[0017] S1, selecting the first oil circuit or the second oil circuit to be connected to the oil tank through the electromagnetic reversing valve;

[0018] S2. The gear pump is used to drive the hydraulic oil into the first chamber or the second chamber, and the oil rod is used to drive the locomotive door to complete the downward closing or upward opening action.

[0019] In one embodiment, it is characterized in that

[0020] When power is off or the control module fails, the manual reversing valve is used to select the third oil circuit or the fourth oil circuit to be connected to the oil cylinder, the manual pump is used to drive the hydraulic oil into the first chamber or the second chamber, and the oil rod is used to drive the locomotive door to complete the downward closing or upward opening action.

[0021] In one embodiment, it is characterized in that

[0022] The oil circuit pressure is recorded in real time by the pressure gauge, and when it exceeds 10Mpa, the oil circuit pressure is reduced by the overflow valve.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] First, the present invention can be remotely controlled through the control module, and further realizes remote control of the locomotive door's downward closing or upward opening action, thereby significantly improving the operating efficiency and further reducing the intensity of the operation.

[0025] Secondly, the present invention can enable the manual reversing valve to take over the work of the control module when the power is off or the control module fails, thereby realizing manual control of the closed or open state of the locomotive door, thereby significantly improving the accuracy and precision of the control and further improving the operating efficiency.

[0026] Third, the present invention can also record the pressure value of each oil circuit in real time, and open the overflow valve when the hydraulic oil pressure in the oil circuit is greater than 10Mpa, thereby allowing part of the hydraulic oil to flow back into the oil tank, so as to effectively reduce the pressure of the oil circuit and further ensure the safety and stability of the adjustment work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A control principle diagram of an opening and closing device for a locomotive door according to the present invention;

[0029] Figure 2 Schematically shows Figure 1 The structure of the fuel tank;

[0030] Figure 3 Schematically shows Figure 1 The structure of the control module;

[0031] Figure 4 The structure of the locomotive cabin door in the opening and closing device for the locomotive cabin door according to the present invention is schematically shown;

[0032] Figure 5 for Figure 4 A partial view showing the connection between the locomotive door and the cylinder.

[0033] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0034] The meanings of the reference numerals in the accompanying drawings are as follows:

[0035] 101 locomotive hatch;

[0036] 11 oil tank, 111 oil return filter, 112 liquid level switch, 113 air filter, 12 oil cylinder, 13 oil rod, 14 gear pump, 15 pin shaft, 16 manual ball valve;

[0037] 201 first oil circuit, 202 second oil circuit, 203 conversion joint;

[0038] 20 control module, 21 solenoid reversing valve, 22 superimposed hydraulic control one-way valve, 23 valve block, 24 cover plate, 25 screw plug;

[0039] 301 third oil line, 302 fourth oil line;

[0040] 31 manual pump, 32 manual reversing valve;

[0041] 40 oil return pipeline, 41 three-way joint, 42 overflow valve, 43 pressure gauge. DETAILED DESCRIPTION

[0042] In order to make the technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0043] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0044] In the present invention, unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0045] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] Figure 1 The figure is a control principle diagram of the opening and closing device for locomotive doors according to the present invention.

[0048] Figure 4 The structure of the locomotive cabin door in the opening and closing device for the locomotive cabin door according to the present invention is schematically shown;

[0049] Figure 5 for Figure 4 A partial view showing the connection between the locomotive door and the cylinder.

[0050] like Figure 1 , 4As shown in Figure 5, according to the first aspect of the present invention, there is provided an opening and closing device for a locomotive cabin door, which mainly includes an oil tank 11 and an oil cylinder 12. Preferably, the oil tank 111 and the oil cylinder 12 are both arranged on the locomotive, and an oil rod 13 is arranged in the oil cylinder 12, and the oil rod 13 is fixedly connected to the locomotive cabin door 101 through a pin shaft 15, so that the closing and opening actions of the locomotive cabin door 101 can be completed by changing the axial position of the oil rod 13 in the oil cylinder 12.

[0051] In one embodiment, Figure 1 As shown, the opening and closing device for the locomotive cabin door also includes a control module 20 arranged between the oil tank 11 and the oil cylinder 12. A first chamber and a second chamber separated by an oil rod 13 are formed in the oil cylinder 12, and the control module 20 also includes a first oil circuit 201 and a second oil circuit 202 arranged in parallel at its output end. Preferably, the first oil circuit 201 is connected to the first chamber to promote the oil rod 13 to move outward to complete the downward flipping and closing action of the locomotive cabin door 101; the second oil circuit 202 is connected to the second chamber to promote the oil rod 13 to move inward to complete the upward flipping and opening action of the locomotive cabin door 101.

[0052] Figure 3 Schematically shows Figure 1 The structure of the control module 20.

[0053] In one embodiment of the present invention, Figure 1 and 3 As shown, an electromagnetic reversing valve 21 is provided in the control module 20. Preferably, the electromagnetic reversing valve 21 can selectively connect the first oil circuit 201 or the second oil circuit 202 to the oil tank 11, and further complete the downward closing or upward opening action of the locomotive cabin door 101. In the present invention, when the A end of the control module 20 is energized, the electromagnetic reversing valve 21 opens the first oil circuit 201 and closes the second oil circuit 202 at the same time, and when the B end of the control module 20 is energized, the electromagnetic reversing valve 21 opens the second oil circuit 202 and closes the first oil circuit 201 at the same time.

[0054] According to the present invention, Figure 1 As shown, a gear pump 14 is further provided between the oil tank 11 and the control module 20. Preferably, the gear pump 14 can drive the hydraulic oil to flow in an orderly manner in a hydraulic oil circuit (such as the first oil circuit 201 or the second oil circuit 202).

[0055] In the present invention, when the first oil circuit 201 is connected to the oil tank 11 (the second oil circuit 202 is closed at this time), the gear pump 14 can drive the hydraulic oil from the oil tank 11 through the first oil circuit 201 into the first chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move outward to drive the locomotive door 101 to complete the downward flipping and closing action;

[0056] In the present invention, when the second oil circuit 202 is connected to the oil tank 11 (the first oil circuit 201 is closed at this time), the gear pump 14 can drive the hydraulic oil from the oil tank 11 through the second oil circuit 202 into the second chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move inward to complete the upward flipping and opening action of the locomotive door 101.

[0057] Preferably, the present invention can remotely control the control module 20, and further realize remote control of the downward closing or upward opening action of the locomotive door 101, thereby significantly improving the operation efficiency and further reducing the intensity of the operation.

[0058] Preferably, if Figure 3 As shown, a stacked hydraulically controlled one-way valve 22 is also provided in the control module 20, and the stacked hydraulically controlled one-way valve 22 is arranged in series with the electromagnetic reversing valve 21. In the present invention, the stacked hydraulically controlled one-way valve 22 can be used in conjunction with the magnetic reversing valve 21, thereby ensuring that the hydraulic oil can only flow in the direction set by the magnetic reversing valve 21, so as to ensure that the hydraulic system can operate stably, thereby reducing energy waste and improving energy utilization efficiency.

[0059] In one embodiment, Figure 3 As shown, the control module 20 includes a valve block 23 configured as a box structure, a cover plate 24 fixedly mounted on the valve block 23, and a screw plug 25 adapted to the cover plate 24 and used to fix the first oil circuit 201 and the second oil circuit 202. Therefore, under the action of the cover plate 24 and the screw plug 25, the stability and firmness of the first oil circuit 201 and the second oil circuit 202 can be ensured.

[0060] Preferably, if Figure 1 As shown, a manual ball valve 16 is also provided at the output end of the oil tank 11. In the present invention, the manual ball valve 16 can cut off the oil circuit. When the hydraulic system fails and needs to be repaired, the manual ball valve 16 can be actively closed to reduce hydraulic oil leakage.

[0061] According to the present invention, Figure 1 As shown, the opening and closing device for the locomotive door also includes a manual pump 31 and a manual reversing valve 32. Preferably, the manual pump 31 is directly connected to the oil tank 11, so that the hydraulic oil can be actively driven to flow in an orderly manner in the hydraulic oil circuit (such as the third oil circuit 301 or the second oil circuit 301, which will be described below). The manual reversing valve 32 is arranged at the output end of the manual pump 31, and it is arranged in parallel with the control module 20, so that it can be started when the power is off or the control module 20 fails to take over the work of the control module 20, thereby ensuring the control of the closed or open state of the locomotive door 101.

[0062] In one embodiment, Figure 1As shown, a conversion joint 203 is provided on both the first oil circuit 201 and the second oil circuit 202. Preferably, a third oil circuit 301 and a fourth oil circuit 302 arranged in parallel are provided at the output end of the manual reversing valve 32, and the third oil circuit 301 and the fourth oil circuit 302 are respectively connected to the two conversion joints 203. Therefore, the third oil circuit 301 or the fourth oil circuit 302 can be selected to be connected to the oil tank 11 through the manual reversing valve 32, and the locomotive cabin door 101 can be further flipped down to close or flipped up to open.

[0063] In the present invention, when the third oil circuit 301 is connected to the oil tank 11 (the fourth oil circuit 302 is closed at this time), the manual pump 31 can drive the hydraulic oil from the oil tank 11 through the third oil circuit 301 into the first chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move outward to drive the locomotive door 101 to complete the downward flipping and closing action;

[0064] In the present invention, when the fourth oil circuit 302 is connected to the oil tank 11 (the third oil circuit 301 is closed at this time), the manual pump 31 can drive the hydraulic oil from the oil tank 11 through the fourth oil circuit 302 into the second chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move inward to complete the upward flipping and opening action of the locomotive cabin door 101.

[0065] Preferably, the present invention can enable manual control mode when power is off or the control module 20 fails, that is, manual control of the closed or open state of the locomotive door 101 is achieved through the manual reversing valve 32, thereby significantly improving the accuracy and precision of the control and further improving the operating efficiency.

[0066] Preferably, a one-way valve is provided between the gear pump 14 and the electromagnetic reversing valve 21 and between the manual pump 31 and the manual reversing valve 32. Therefore, under the action of the one-way valve, only the hydraulic oil is allowed to flow from the gear pump 14 to the electromagnetic reversing valve 21 or only the hydraulic oil is allowed to flow from the manual pump 31 to the manual reversing valve 32, which effectively avoids the situation that the parts of the device are damaged or the working abnormality is caused by the backflow of the hydraulic oil.

[0067] In one embodiment, Figure 1 As shown, an oil return pipeline 40 is provided on the oil tank 11. Preferably, the opening and closing device for the locomotive cabin door further includes a three-way joint 41 respectively connected to the control module 20, the manual reversing valve 32 and the oil return pipeline 40. Therefore, when the oil circuit pressure is too large, the excess hydraulic oil can be discharged through the oil return pipeline 40 to ensure the stability of the oil circuit.

[0068] In the present invention, if Figure 1As shown, a relief valve 42 and a pressure gauge 43 are sequentially arranged in series on the oil return pipeline 40. Preferably, the pressure value of each oil circuit can be recorded in real time through the pressure gauge 43, and the relief valve 42 is opened when the hydraulic oil pressure of the oil circuit is greater than 10Mpa, thereby allowing part of the hydraulic oil to flow back into the oil tank 11, so as to effectively reduce the pressure of the oil circuit, and further ensure the safety and stability in the adjustment work.

[0069] Preferably, if Figure 2 As shown, a return oil filter 111 is also provided on the oil tank 11, which can receive the hydraulic oil returning through the overflow valve 42, and can filter the hydraulic oil to recycle it into the oil tank 11, thereby helping to improve the service life of the opening and closing device for the locomotive cabin door.

[0070] In one embodiment, Figure 2 As shown, a liquid level switch 112 and an air filter 113 are also provided on the oil tank 11. Preferably, the liquid level switch 112 can sound an alarm when the liquid level in the oil tank 11 is too low, so as to prompt that hydraulic oil needs to be added; the air filter 113 can discharge the air in the oil tank 11 while preventing the hydraulic oil from escaping, thereby ensuring the pressure balance in the oil tank 11.

[0071] According to a second aspect of the present invention, a method for opening and closing a locomotive door is provided, which uses the opening and closing device as described above, and comprises the following steps:

[0072] First, the first oil circuit 201 or the second oil circuit 202 is selected to be connected to the oil tank 11 through the electromagnetic reversing valve 21;

[0073] Then, according to the selection of the electromagnetic reversing valve 21, the locomotive door 101 will perform different actions.

[0074] If the first oil circuit 201 is connected to the oil tank 11, the second oil circuit 202 is closed, and the gear pump 14 drives the hydraulic oil from the oil tank 11 through the first oil circuit 201 into the first chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move outward to drive the locomotive door 101 to complete the downward flipping and closing action;

[0075] If the second oil circuit 202 is connected to the oil tank 11, the first oil circuit 201 is closed. The gear pump 14 can then drive the hydraulic oil from the oil tank 11 through the second oil circuit 202 into the second chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move inward to complete the upward opening action of the locomotive door 101.

[0076] In one embodiment of the present invention, if the power is off or the control module 20 can start the manual reversing valve 32 and the manual pump 31, and select the third oil circuit 301 or the fourth oil circuit 302 to be connected to the oil tank 11 through the manual reversing valve 32. Thereafter, the locomotive door 101 can be prompted to perform different actions according to the selection of the manual reversing valve 32.

[0077] If the third oil circuit 301 is connected to the oil tank 11, the fourth oil circuit 302 is closed, and the manual pump 31 drives the hydraulic oil from the oil tank 11 through the third oil circuit 301 into the first chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move outward to drive the locomotive door 101 to complete the downward flipping and closing action;

[0078] If the fourth oil circuit 302 is connected to the oil tank 11, the third oil circuit 301 is closed. The manual pump 31 can then drive the hydraulic oil from the oil tank 11 through the fourth oil circuit 302 into the second chamber of the oil cylinder 12, thereby pushing the oil rod 13 to move inward to complete the upward opening action of the locomotive door 101.

[0079] Preferably, the present invention can record the pressure value of each oil circuit in real time through the pressure gauge 43, and open the overflow valve 42 when the hydraulic oil pressure of the oil circuit is greater than 10Mpa, thereby allowing part of the hydraulic oil to flow back into the oil tank 11, so as to effectively reduce the pressure of the oil circuit and further ensure the safety and stability of the adjustment work.

[0080] Compared with the prior art, the advantages of the present invention are:

[0081] First, the present invention can be remotely controlled through the control module 20, and further realizes remote control of the locomotive door 101 to close or open, thereby significantly improving the operation efficiency and further reducing the intensity of the operation.

[0082] Secondly, the present invention can enable the manual reversing valve 32 to take over the work of the control module 20 when the power is off or the control module 20 fails, thereby realizing manual control of the closed or open state of the locomotive door 101, thereby significantly improving the accuracy and precision of the control and further improving the operating efficiency.

[0083] Third, the present invention can also record the pressure value of each oil circuit in real time, and open the overflow valve 42 when the hydraulic oil pressure of the oil circuit is greater than 10Mpa, thereby allowing part of the hydraulic oil to flow back into the oil tank 11, so as to effectively reduce the pressure of the oil circuit and further ensure the safety and stability of the adjustment work.

[0084] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the disclosure scope of the present invention, and such changes or modifications should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An opening and closing device for a locomotive door, comprising: Fuel tank (11), An oil cylinder (12) is arranged on a locomotive, wherein an oil rod (13) connected to a locomotive cabin door (101) is arranged in the oil cylinder (12), and a control module (20) disposed between the oil tank (11) and the oil cylinder (12), A first chamber and a second chamber separated by the oil rod (13) are formed in the oil cylinder (12), and a first oil circuit (201) and a second oil circuit (202) arranged in parallel and respectively connected to the first chamber and the second chamber are provided at the output end of the control module (20).

2. The opening and closing device for a locomotive door according to claim 1, characterized in that: An electromagnetic reversing valve (21) is provided in the control module (20), and the electromagnetic reversing valve (21) is configured to select the first oil circuit (201) or the second oil circuit (202) to be connected to the oil tank (11).

3. The opening and closing device for a locomotive door according to claim 2, characterized in that: A gear pump (14) is also provided between the oil tank (11) and the control module (20). When the first oil circuit (201) is connected to the oil tank (11), the gear pump (14) drives the hydraulic oil into the first chamber and drives the locomotive cabin door to flip down and close through the oil rod (13); when the second oil circuit (202) is connected to the oil tank (11), the gear pump (14) drives the hydraulic oil into the second chamber and drives the locomotive cabin door to flip up and open through the oil rod (13).

4. The opening and closing device for a locomotive door according to claim 3, characterized in that: A superimposed hydraulically controlled one-way valve (22) arranged in series with the electromagnetic reversing valve (21) is also provided in the control module (20).

5. The opening and closing device for a locomotive door according to claim 4, characterized in that: The opening and closing device further comprises a manual pump (31) connected to the oil tank (11), and a manual reversing valve (32) connected to the manual pump (31) and arranged in parallel with the control module (20).

6. The opening and closing device for a locomotive door according to claim 5, characterized in that: A conversion joint (203) is provided on both the first oil circuit (201) and the second oil circuit (202). A third oil circuit (301) and a fourth oil circuit (302) are provided at the output end of the manual reversing valve (32) and are arranged in parallel and respectively connected to the two conversion joints (203).

7. The opening and closing device for a locomotive door according to claim 6, characterized in that: An oil return pipeline (40) is provided on the oil tank (11), and the opening and closing device further comprises a three-way joint (41) connected to the control module (20), the manual reversing valve (32) and the oil return pipeline (40) respectively, and a relief valve (42) and a pressure gauge (43) arranged in series on the oil return pipeline (40).

8. A method for opening and closing a locomotive door, using the opening and closing device according to any one of claims 1 to 8, comprising the following steps: S1, selecting the first oil circuit (201) or the second oil circuit (202) to be connected to the oil tank (11) through the electromagnetic reversing valve (21); S2. The gear pump (14) drives the hydraulic oil into the first chamber or the second chamber, and the oil rod (13) drives the locomotive door to complete the downward closing or upward opening action.

9. The opening and closing method according to claim 8, characterized in that: When power is cut off or the control module (20) fails, the third oil circuit (301) or the fourth oil circuit (301) is selected to be connected to the oil cylinder (12) through the manual reversing valve (32), the hydraulic oil is driven into the first chamber or the second chamber through the manual pump (31), and the locomotive door is driven to complete the downward closing or upward opening action through the oil rod (13).

10. The opening and closing method according to claim 9, characterized in that: The oil circuit pressure is recorded in real time by the pressure gauge (43), and when it exceeds 10Mpa, the oil circuit pressure is reduced by the overflow valve (42).

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