Pneumatic door control system and railway vehicle

Abstract

The utility model relates to the field of door structures, and provides a pneumatic door control system and a railway vehicle, and the pneumatic door control system comprises a door control loop used for controlling the state switching of a door; the gas supply loop comprises a first gas supply branch, a second gas supply branch and a first two-way check valve, one end of the first gas supply branch and one end of the second gas supply branch are both connected with the gas source, the other end of the first gas supply branch and the other end of the second gas supply branch are both connected with the first two-way check valve, and the first two-way check valve is connected with the door control loop. The pneumatic door control system is used for overcoming the defect that in the prior art, a pneumatic door is accidentally opened due to the fact that an air source is disconnected, a door control loop is connected with the air source through an air supply loop, and the air supply loop is provided with a first air supply branch and a second air supply branch through a first two-way check valve. When one of the first air supply branch and the second air supply branch leaks air or is disconnected, the first two-way check valve blocks the first air supply branch and the second air supply branch, and the other one can supply air normally, so that the safety of the door is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door structures, in particular to a pneumatic door control system and a rail vehicle. Background Art

[0002] Pneumatic doors work with compressed air, and use a single-line air supply on the vehicle. They are connected with nylon hoses and pipe joints. The hose connection is inevitably prone to loosening. When the air pipe of the main air supply line of the pneumatic door is disconnected, the pneumatic door loses its power source, and the pneumatic door is in a free state, with the risk of accidental opening during operation.

[0003] In the prior art, the problem of accidental door opening can be solved by adding a mechanical locking device, but this requires major modifications to the vehicle door, the modification cost is high, and the technical reliability remains to be verified. Utility Model Content

[0004] The utility model provides a pneumatic door control system and a rail vehicle, which are used to solve the defect in the prior art that the pneumatic door is accidentally opened when the air source is disconnected, realize the redundant double-channel pipeline setting of the air supply circuit, ensure the function that the door can still be closed normally after one channel of air supply is disconnected, and solve the hidden danger of abnormal opening of the vehicle door during use.

[0005] The utility model provides a pneumatic door control system, comprising:

[0006] A door control loop, wherein the door control loop is used to control the state switching of the door;

[0007] An air supply circuit, the air supply circuit includes a first air supply branch, a second air supply branch and a first two-way check valve, one end of the first air supply branch and the second air supply branch are connected to an air source, the other end of the first air supply branch and the second air supply branch are connected to the first two-way check valve, and the first two-way check valve is connected to the door control circuit.

[0008] According to the pneumatic door control system provided by the utility model, the air supply circuit also includes a third air supply branch, a fourth air supply branch and a second two-way check valve, one end of the third air supply branch and the fourth air supply branch are connected to the air source, the other end of the third air supply branch and the fourth air supply branch are connected to the second two-way check valve, and the second two-way check valve is connected to one end of the first air supply branch and the second air supply branch.

[0009] According to the pneumatic door control system provided by the utility model, the air supply circuit further includes an exhaust valve, and the exhaust valve is arranged between the first two-way check valve and the air source.

[0010] According to the pneumatic door control system provided by the utility model, the first air supply branch and the second air supply branch are hoses.

[0011] According to the pneumatic door control system provided by the utility model, the door control circuit includes a door drive mechanism, the door drive mechanism is connected to the first two-way check valve, and the door drive mechanism is used to control the opening and closing of the door.

[0012] According to the pneumatic door control system provided by the utility model, the door drive mechanism includes a cylinder and a first reversing valve, the telescopic rod of the cylinder is connected to the door, the air outlet end of the first reversing valve is connected to the two chambers of the cylinder, and the air inlet end of the first reversing valve is connected to the first two-way check valve.

[0013] According to the pneumatic door control system provided by the utility model, the door control circuit also includes a clamping mechanism, the clamping mechanism is connected to the first two-way check valve, and the clamping mechanism is used to clamp the door in a closed state.

[0014] According to the pneumatic door control system provided by the utility model, the clamping mechanism includes a single-acting cylinder and a second reversing valve, the air outlet end of the second reversing valve is connected to the rodless chamber of the single-acting cylinder, and the air inlet end of the second reversing valve is connected to the first two-way check valve.

[0015] According to the pneumatic door control system provided by the utility model, the clamping mechanism further includes a speed regulating component, and the speed regulating component is arranged between the single-acting cylinder and the second reversing valve.

[0016] The utility model also provides a rail vehicle, comprising a door and the above-mentioned pneumatic door control system, wherein the door control circuit is connected with the door.

[0017] The pneumatic door control system provided by the utility model connects the door control circuit to the air source through an air supply circuit. The air supply circuit sets a first air supply branch and a second air supply branch through a first two-way check valve. When one of the first air supply branch and the second air supply branch leaks or is disconnected, the first two-way check valve blocks it, thereby increasing the residual pressure when the branch is disengaged and reducing the leakage flow. The other one can supply air normally, thereby improving the safety of the door.

[0018] Furthermore, in the rail vehicle provided by the present invention, since it is provided with the pneumatic door control system as described above, it also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of a pneumatic door control system provided by the utility model.

[0021] Reference numerals:

[0022] 100: air supply circuit; 101: first air supply branch; 102: second air supply branch; 110: first two-way check valve; 120: second two-way check valve; 130: exhaust valve; 103: third air supply branch; 104: fourth air supply branch; 200: door control circuit; 210: door drive mechanism; 220: clamping mechanism; 201: cylinder; 202: first reversing valve; 203: single-acting cylinder; 204: second reversing valve; 205: speed control component. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0027] Combine the following Figure 1 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0028] like Figure 1 As shown, the utility model provides a pneumatic door control system, including: a door control circuit 200 and an air supply circuit 100, the door control circuit 200 is used to control the state of the door; the door is switched between different states, for example, between open, closed, and compressed states. The air supply circuit 100 includes a first air supply branch 101, a second air supply branch 102, and a first two-way check valve 110, one end of the first air supply branch 101 and the second air supply branch 102 are both connected to the air source, the other ends of the first air supply branch 101 and the second air supply branch 102 are both connected to the first two-way check valve 110, and the first two-way check valve 110 is connected to the door control circuit 200.

[0029] The air supply circuit 100 is used to provide control power to the door control circuit 200. The first air supply branch 101 and the second air supply branch 102 simultaneously supply air to the door control circuit 200 and are connected through the first two-way check valve 110. When one of the first air supply branch 101 and the second air supply branch 102 is disconnected or leaks, the other can still supply air to the door control circuit 200 through the first two-way check valve 110 to ensure the control of the state of the door. The air source can be compressed air.

[0030] Specifically, the first two-way check valve 110 includes a first inlet, a second inlet and an outlet, the first inlet is connected to the first gas supply branch 101, the second inlet is connected to the second gas supply branch 102, and the outlet is connected to the door control circuit 200. When the first inlet and the second inlet are both connected to the gas source, the first inlet and the second inlet are both connected to the outlet to supply gas to the door control circuit 200. When one of the first inlet and the second inlet is disconnected from the gas source or leaks, the inlet is blocked, and the other inlet is normally connected to the outlet to provide sufficient gas to the door control circuit 200.

[0031] The working pressure of the pneumatic door is designed to match the air supply circuit 100 with the door working pressure, thereby ensuring that the door can still be closed normally after one air supply is disconnected, thereby solving the hidden danger of abnormal opening of the door during use.

[0032] Continue to refer Figure 1 In another embodiment of the utility model, the air supply circuit 100 also includes a third air supply branch 103, a fourth air supply branch 104 and a second two-way check valve 120, one end of the third air supply branch 103 and the fourth air supply branch 104 are connected to the air source, the other ends of the third air supply branch 103 and the fourth air supply branch 104 are connected to the second two-way check valve 120, and the second two-way check valve 120 is connected to one end of the first air supply branch 101 and the second air supply branch 102.

[0033] That is, the first two-way check valve 110 and the second two-way check valve 120 are connected in series with the gas source, the first gas supply branch 101 is connected in parallel with the second gas supply branch 102, and the third gas supply branch 103 is connected in parallel with the fourth gas supply branch 104. For example, a three-way valve is provided between the first gas supply branch 101, the second gas supply branch 102 and the second two-way check valve 120 for easy connection. A three-way valve is provided between the third gas supply branch 103, the fourth gas supply branch 104 and the gas source for easy connection, and the gas source may be an air pump or a storage tank.

[0034] The compressed air from the air source passes through the second two-way check valve 120, reaches the first two-way check valve 110, and finally supplies air to the door control circuit 200. When one of the third air supply branch 103 and the fourth air supply branch 104 leaks or is disconnected, the leaking end is blocked by the second two-way check valve 120, and the other one supplies air normally, thereby solving the hidden danger of abnormal door opening during the operation of the operating machine and reducing the leakage flow.

[0035] Furthermore, in another embodiment of the present invention, the air supply circuit 100 further includes an exhaust valve 130, which is disposed between the first two-way check valve 110 and the air source. The exhaust valve 130 is used to open in an emergency to ensure emergency opening of the door and improve safety.

[0036] In an optional embodiment of the present invention, the first air supply branch 101 and the second air supply branch 102 are hoses, which are more flexible and convenient for installation and use.

[0037] Specifically, in other embodiments of the present invention, the door control circuit 200 includes a door driving mechanism 210 , which is connected to the first two-way check valve 110 , and is used to control the opening and closing of the door.

[0038] In an optional embodiment of the present utility model, the door drive mechanism 210 includes a cylinder 201 and a first reversing valve 202, the telescopic rod of the cylinder 201 is connected to the door, the air outlet end of the first reversing valve 202 is connected to the two chambers of the cylinder 201, and the air inlet end of the first reversing valve 202 is connected to the first two-way check valve 110.

[0039] For example, when the first reversing valve 202 is in the first working position, the air source is connected to the rodless cavity of the cylinder 201, the telescopic rod of the cylinder 201 is extended, and after the telescopic rod is extended to the right position, the door is in a closed state. When the first reversing valve 202 is switched to the second working position, the air source is connected to the rod cavity of the cylinder 201, the telescopic rod of the cylinder 201 is retracted, and after the telescopic rod is extended to the right position, the door is in an open state. The first reversing valve 202 may be a solenoid valve.

[0040] Furthermore, in another optional embodiment of the present invention, the door control circuit 200 further includes a clamping mechanism 220, which is connected to the first two-way check valve 110 and is used to clamp the door in the closed state. The clamping mechanism 220 clamps the door against the door body, and the friction force can ensure that the door is in the closed state.

[0041] When performing the door closing action, the door driving mechanism 210 puts the door in a closed state, and the clamping mechanism 220 presses the closed door against the door body; when performing the door opening action, the clamping mechanism 220 is removed from the door, and the door driving mechanism 210 puts the door in an open state.

[0042] Specifically, in some embodiments of the present invention, the clamping mechanism 220 includes a single-acting cylinder 203 and a second reversing valve 204, the outlet end of the second reversing valve 204 is connected to the rodless chamber of the single-acting cylinder 203, and the inlet end of the second reversing valve 204 is connected to the first two-way check valve 110.

[0043] For example, when the second reversing valve 204 is in the first working position, air is introduced into the rodless chamber of the single-acting cylinder 203, the telescopic rod of the single-acting cylinder 203 is extended, and the clamping mechanism 220 clamps the door; when the second reversing valve 204 is in the second working position, the rodless chamber of the single-acting cylinder 203 is connected to the atmosphere, and under the action of the return spring of the single-acting cylinder 203, the telescopic rod of the single-acting cylinder 203 is retracted, and the clamping mechanism 220 releases the door.

[0044] When the pipeline (a hose) between the first reversing valve 202 and the cylinder 201 is disconnected separately, the clamping mechanism 220 presses the vehicle door against the vehicle body, and the friction force can be used to ensure that the vehicle door is in a closed state; when the pipeline (a hose) between the second reversing valve 204 and the single-acting cylinder 203 is disconnected, the cylinder 201 can be used to ensure that the vehicle door is in a closed state.

[0045] In addition, in one embodiment of the present invention, the pressing mechanism 220 further includes a speed regulating component 205, which is disposed between the single-acting cylinder 203 and the second reversing valve 204. The speed regulating component 205 regulates the intake and exhaust speeds of the single-acting cylinder 203.

[0046] For example, the speed regulating component 205 includes a first speed regulating branch and a second speed regulating branch, the first speed regulating branch and the second speed regulating branch are connected in parallel, the first speed regulating branch includes a first speed regulating valve and a first non-return valve, the inlet of the first non-return valve is connected to the rodless chamber of the single-acting cylinder 203, the outlet of the first non-return valve is connected to the first speed regulating valve, and the first speed regulating valve is connected to the second reversing valve 204. The second speed regulating branch includes a second speed regulating valve and a second non-return valve, the inlet of the second non-return valve is connected to the second reversing valve 204, the outlet of the second non-return valve is connected to the second speed regulating valve, and the second speed regulating valve is connected to the rodless chamber of the single-acting cylinder 203.

[0047] When the telescopic rod of the single-acting cylinder 203 is extended, compressed air is taken in through the second speed regulating branch. When the telescopic rod of the single-acting cylinder 203 is retracted, the compressed air in the rodless chamber of the single-acting cylinder 203 is discharged into the air through the first speed regulating valve and the second reversing valve 204.

[0048] The utility model provides a rail vehicle, comprising a door and the pneumatic door control system of the above embodiment, wherein a door control circuit 200 is connected with the door.

[0049] The pneumatic door control system provided by the utility model connects the door control circuit 200 to the air source through the air supply circuit 100. The air supply circuit 100 sets the first air supply branch 101 and the second air supply branch 102 through the first two-way check valve 110. When one of the first air supply branch 101 and the second air supply branch 102 leaks or is disconnected, the first two-way check valve 110 blocks it, thereby increasing the residual pressure when the branch is disengaged and reducing the leakage flow. The other one can supply air normally, thereby improving the safety of the door.

[0050] Furthermore, in the rail vehicle provided by the present invention, since it is provided with the pneumatic door control system as described above, it also has the various advantages as described above.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A pneumatic door control system, characterized in that: include: A door control loop, wherein the door control loop is used to control the state switching of the door; An air supply circuit, the air supply circuit includes a first air supply branch, a second air supply branch and a first two-way check valve, one end of the first air supply branch and the second air supply branch are connected to an air source, the other end of the first air supply branch and the second air supply branch are connected to the first two-way check valve, and the first two-way check valve is connected to the door control circuit.

2. The pneumatic door control system according to claim 1, characterized in that: The air supply circuit also includes a third air supply branch, a fourth air supply branch and a second two-way check valve, one end of the third air supply branch and the fourth air supply branch are connected to the air source, the other end of the third air supply branch and the fourth air supply branch are connected to the second two-way check valve, and the second two-way check valve is connected to one end of the first air supply branch and the second air supply branch.

3. The pneumatic door control system according to claim 1, characterized in that: The air supply circuit further includes an exhaust valve, which is arranged between the first two-way check valve and the air source.

4. The pneumatic door control system according to any one of claims 1 to 3, characterized in that: The first air supply branch and the second air supply branch are hoses.

5. The pneumatic door control system according to any one of claims 1 to 3, characterized in that: The door control circuit includes a door drive mechanism, which is connected to the first two-way check valve and is used to control the opening and closing of the door.

6. The pneumatic door control system according to claim 5, characterized in that: The door driving mechanism includes a cylinder and a first reversing valve, the telescopic rod of the cylinder is connected to the door, the air outlet end of the first reversing valve is connected to the two chambers of the cylinder, and the air inlet end of the first reversing valve is connected to the first two-way check valve.

7. The pneumatic door control system according to claim 5, characterized in that: The door control circuit further includes a clamping mechanism, which is connected to the first two-way check valve and is used to clamp the door in a closed state.

8. The pneumatic door control system according to claim 7, characterized in that: The clamping mechanism includes a single-acting cylinder and a second reversing valve, wherein an air outlet end of the second reversing valve is connected to a rodless chamber of the single-acting cylinder, and an air inlet end of the second reversing valve is connected to the first two-way check valve.

9. The pneumatic door control system according to claim 8, characterized in that: The clamping mechanism further includes a speed regulating assembly, and the speed regulating assembly is arranged between the single-acting cylinder and the second reversing valve.

10. A rail vehicle, characterized in that: The invention comprises a door and the pneumatic door control system according to any one of claims 1 to 9, wherein the door control circuit is connected to the door.

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