Control box for lifting pantograph

Abstract

The utility model provides a pantograph lifting control box which comprises a power conversion unit, a control unit, a signal unit and a control box motor. The control unit comprises a pantograph rising circuit and a pantograph falling circuit; the pantograph lifting circuit comprises a pantograph lifting relay circuit, the input end of the pantograph lifting relay circuit is electrically connected with the output end of the power supply, and the output end of the pantograph lifting relay circuit is electrically connected with the first end of the motor of the control box; when the pantograph rising relay is switched on, the control box motor rotates forwards to realize pantograph rising operation; the pantograph descending circuit comprises a pantograph descending relay circuit, the input end of the pantograph descending relay circuit is electrically connected with the output end of the power source, and when a pantograph descending relay is connected, the control box motor rotates reversely to achieve pantograph descending operation. The logic circuit of the electric appliance can greatly improve the reliability and the stability of pantograph rising control and pantograph falling control, and meets the harsh railway operation environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to control field especially, and it is a kind of lifting bow control box. BACKGROUND

[0002] Pantograph is the electrical equipment installed on the roof of rail transit vehicle to obtain power from the catenary, and is the core component to ensure the power source of vehicle. When the vehicle is running, the pantograph rises and directly contacts with the catenary wire to receive current from the catenary, and then transmits it to the vehicle interior through the roof bus for use of the vehicle.

[0003] Pantograph control box is an important part of the pantograph system of rail transit vehicle. The main function of the pantograph control box is to control the lifting mechanism of the pantograph, to ensure that the lifting operation can be performed with high safety and reliability after receiving the lifting instruction.

[0004] However, the existing pantograph control box mainly uses electronic circuit, and the reliability and stability of the lifting and lowering control of the pantograph are not high in the harsh railway operating environment. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a lifting bow control box to solve the technical problems existing in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a lifting bow control box, which comprises a power conversion unit, a control unit, a signal unit and a control box motor.

[0007] The power conversion unit forms a path and converts the input voltage into 24V voltage and outputs from the power output end;

[0008] The control unit comprises a lifting bow circuit and a lowering bow circuit.

[0009] The lifting bow circuit comprises a lifting bow relay circuit, the input end of the lifting bow relay circuit is electrically connected with the power output end, and the output end of the lifting bow relay circuit is electrically connected with the first end of the control box motor; when the lifting bow relay is turned on, the control box motor rotates in the positive direction to realize the lifting bow operation.

[0010] The lowering bow circuit comprises a lowering bow relay circuit, the input end of the lowering bow relay circuit is electrically connected with the power output end, and the output end of the lowering bow relay circuit is electrically connected with the first end of the control box motor; when the lowering bow relay is turned on, the control box motor rotates in the reverse direction to realize the lowering bow operation.

[0011] The second end of the control box motor is electrically connected with the power output end;

[0012] The output end of the signal unit is electrically connected with the power output end through the rising arch circuit and the falling arch circuit.

[0013] Further, the output end of the rising arch relay circuit is electrically connected with the first end of the control box motor through a rising arch pressing switch.

[0014] Further, the output end of the falling arch relay circuit is electrically connected with the first end of the control box motor through a falling arch pressing switch.

[0015] Further, the signal unit comprises a first external sensor signal path and a second external sensor signal path; the output end of the first external sensor signal path is electrically connected with the power output end through the rising arch circuit; and the output end of the second external sensor signal path is electrically connected with the power output end through the falling arch circuit.

[0016] Further, the rising arch relay circuit is composed of a first circuit and a second circuit in parallel; the first circuit is composed of two first rising arch relays in parallel; one second rising arch relay is connected in series on the second circuit; and the output end of the first external sensor signal path is electrically connected with the power output end through the contact of the second rising arch relay.

[0017] Further, the falling arch relay circuit is composed of a third circuit and a fourth circuit in parallel; the third circuit is composed of two first falling arch relays in parallel; one second falling arch relay is connected in series on the fourth circuit; and the output end of the second external sensor signal path is electrically connected with the power output end through the contact of the second falling arch relay.

[0018] Further, the level of the rising arch relay circuit is 24VDC in the rising arch state.

[0019] Further, the level of the falling arch relay circuit is 24VDC in the falling arch state.

[0020] As described above, the utility model discloses a rising and falling arch control box, which has the following beneficial effects:

[0021] The utility model discloses a rising and falling arch control box, which has the following beneficial effects:

[0022] The control unit includes a pantograph raising circuit and a pantograph lowering circuit. The pantograph raising circuit includes a pantograph raising relay circuit, the input of which is electrically connected to the power output, and the output of which is electrically connected to the first terminal of the control box motor. When the pantograph raising relay is activated, the control box motor rotates forward, achieving pantograph raising. The pantograph lowering circuit includes a pantograph lowering relay circuit, the input of which is electrically connected to the power output, and the output of which is electrically connected to the first terminal of the control box motor. When the pantograph lowering relay is activated, the control box motor rotates in reverse, achieving pantograph lowering. This electrical logic circuit can greatly improve the reliability and stability of pantograph raising and lowering control, meeting the harsh railway operating environment. Attached Figure Description

[0023] Figure 1 The diagram shown is a control circuit diagram of a lifting bow control box according to this utility model. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0025] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0026] like Figure 1 As shown, this utility model provides a lifting pantograph control box, including a power conversion unit 1, a control unit, a signal unit 4, and a control box motor 6.

[0027] The power conversion unit 1, access input voltage range: 66-160VDC, through the power conversion module in the power conversion unit 1 from the power output end output 24VDC power, power conversion module has input under voltage protection, output overcurrent protection, output overvoltage protection, output short circuit protection, over temperature protection, its working principle is based on power electronics technology and control circuit technology, its core is switching power device and control circuit.

[0028] The control unit includes the bow circuit 3 and the bow circuit 2. The signal unit 4 includes the first outer sensor signal path 41 and the second outer sensor signal path 42, see Figure 1 .

[0029] The application can perform the bow action by turning on the bow circuit 3 in operation; the bow action can be stopped by turning off the bow circuit 3, and the state of the pantograph is maintained, see Figure 1 .

[0030] The bow circuit 3 includes a bow relay circuit, the input end of the bow relay circuit is electrically connected with the power output end, and the output end of the bow relay circuit is electrically connected with the first end of the control box motor 6; when the bow relay is turned on, the control box motor 6 rotates in the positive direction, and the bow operation is realized; further, the bow relay circuit is composed of a first circuit and a second circuit in parallel, the first circuit is composed of two first bow relays K4 and K5 in parallel, and the reliability of the first circuit is further improved because even if one of the relays fails, the other relay can still work normally, and the normal work of the first circuit is ensured. Based on specific control logic or safety considerations, a second bow relay K6 is connected in series on the second circuit, see Figure 1 .

[0031] The output end of the first outer sensor signal path 41 is electrically connected with the power output end through the bow circuit 3, and the output end of the second outer sensor signal path 42 is electrically connected with the power output end through the bow circuit 2.

[0032] Specifically, the output end of the first outer sensor signal path 41 is electrically connected with the power output end through the contact of the second bow relay. In the figure, the signal input port 51 and the signal input port 52 are used for inputting the outer sensor signal, the signal input port 51 receives the signal to confirm that the pantograph is raised to a certain position, the relay K6 switches the state, and the main board output is ensured to complete the bow raising, wherein the signal pan to in up postion on is valid, and the level is 24VDC, see Figure 1 .

[0033] Preferably, the level of the pantograph-up relay circuit is 24VDC when the pantograph is in the pantograph-up state.

[0034] In the present application, the output end of the pantograph-up relay circuit is electrically connected with the first end of the control box motor 6 through the pantograph-up press switch. When the pantograph-up press switch is pressed, the relay K1 and the relay K2 work, realizing the motor forward rotation, ensuring the motor in the pantograph-up state, and further realizing the execution of the pantograph-up action. The motor is electrically connected with the output end of the power conversion unit 1, and the motor is also connected with the ground, see Figure 1 .

[0035] When the present application needs to execute the pantograph-down action, the related control mechanism is triggered by turning on the pantograph-down circuit 2, so that the pantograph begins to descend. When the pantograph-down action needs to be stopped or the current state of the pantograph is maintained, the related control signal is cut off by turning off the pantograph-down circuit 2, so that the pantograph stops descending and is maintained at the current position, see Figure 1 .

[0036] Referring to Figure 1 , the pantograph-down circuit 2 includes a pantograph-down relay circuit, the input end of the pantograph-down relay circuit is electrically connected with the power output end, and the output end of the pantograph-down relay circuit is electrically connected with the first end of the control box motor 6. When the pantograph-down relay is turned on, the control box motor 6 is reversed, realizing the pantograph-down operation. Further, the pantograph-down relay circuit is composed of a third circuit and a fourth circuit in parallel. The third circuit is composed of two first pantograph-down relays K1 and K2 in parallel. This parallel design can ensure that even if one of the relays fails, the other relay can still work normally, thereby maintaining the continuity of the pantograph-down action. Based on specific control logic or safety considerations, a second pantograph-down relay k3 is connected in series on the fourth circuit.

[0037] The second end of the control box motor 6 is electrically connected with the power output end.

[0038] The output end of the signal unit 4 is electrically connected with the power output end through the pantograph-up circuit 3 and the pantograph-down circuit 2.

[0039] Further, the output end of the pantograph-down relay circuit is electrically connected with the first end of the control box motor 6 through the pantograph-down press switch. When the pantograph-down press switch is pressed, the relay K4 and the relay K5 work, realizing the motor reverse rotation, ensuring the motor in the pantograph-down state, and further realizing the execution of the pantograph-down action, see Figure 1 .

[0040] The signal unit 4 comprises a first outer sensor signal path 41 and a second outer sensor signal path 42; the output end of the first outer sensor signal path 41 is electrically connected with the power output end through the up-bow circuit 3; the output end of the second outer sensor signal path 42 is electrically connected with the power output end through the down-bow circuit 2. The signal input port 51 and the signal input port 52 of the signal unit 4 are used for inputting outer sensor signals, see Figure 1 .

[0041] The output end of the first outer sensor signal path 41 is electrically connected with the power output end through the contact of the second up-bow relay. When the signal input port 51 receives a signal confirming that the pantograph is up-bowed to a certain position, the relay K6 switches the state, ensuring that the main board outputs the up-bow completion, wherein the signal pan to in up position is valid, and the level is 24VDC, see Figure 1 .

[0042] Referring to Figure 1 , the output end of the second outer sensor signal path 42 is electrically connected with the power output end through the contact of the second down-bow relay. When the signal input port 52 receives a signal confirming that the pantograph is down-bowed to a certain position, the relay K3 switches the state, ensuring that the main board outputs the down-bow completion, wherein the signal pan to in up position is valid, and the level is 24VDC.

[0043] Preferably, when the pantograph is in the down-bow state, the level of the down-bow relay circuit is 24VDC.

[0044] As Figure 1 , the utility model discloses a up-down bow control box includes power conversion unit 1, control unit, signal unit 4 and control box motor 6, the control unit includes up-bow circuit 3 and down-bow circuit 2, the up-bow circuit 3 includes up-bow relay circuit, the input end of up-bow relay circuit is electrically connected with power output end, and the output end of up-bow relay circuit is electrically connected with the first end of control box motor 6 electric property, when up-bow relay is connected, control box motor 6 carries out positive rotation, realizes up-bow operation, the down-bow circuit 2 includes down-bow relay circuit, and the input end of down-bow relay circuit is electrically connected with power output end, and the output end of down-bow relay circuit is electrically connected with the first end of control box motor 6 electric property, when down-bow relay is connected, control box motor 6 carries out reverse rotation, realizes down-bow operation. This electric appliance logic circuit can greatly improve the reliability and stability of up-bow control and down-bow control, satisfy the severe railway operation environment. Therefore, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0045] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application should be covered by the claims of the present application.

Claims

1. A riser bow control box characterized by, The power conversion unit, the control unit, the signal unit and the control box motor are included; the power conversion unit forms a path and realizes conversion of input voltage into 24V voltage and output from the power output end; The control unit includes the bow-up circuit and the bow-down circuit; The bow-up circuit includes a bow-up relay circuit, the input end of the bow-up relay circuit is electrically connected with the power output end, and the output end of the bow-up relay circuit is electrically connected with the first end of the control box motor; when the bow-up relay is turned on, the control box motor is positively rotated to realize the bow-up operation; The bow-down circuit includes a bow-down relay circuit, the input end of the bow-down relay circuit is electrically connected with the power output end, and the output end of the bow-down relay circuit is electrically connected with the first end of the control box motor; when the bow-down relay is turned on, the control box motor is reversely rotated to realize the bow-down operation; The second end of the control box motor is electrically connected with the power output end; The output end of the signal unit is electrically connected with the power output end through the bow-up circuit and the bow-down circuit.

2. The lift bow control box of claim 1, wherein: The output end of the bow-up relay circuit is electrically connected with the first end of the control box motor through the bow-up pressing switch.

3. The lift bow control box of claim 1, wherein: The output end of the bow-down relay circuit is electrically connected with the first end of the control box motor through the bow-down pressing switch.

4. The lift bow control box of claim 1, wherein: The signal unit includes the first outer sensor signal path and the second outer sensor signal path; the output end of the first outer sensor signal path is electrically connected with the power output end through the bow-up circuit; and the output end of the second outer sensor signal path is electrically connected with the power output end through the bow-down circuit.

5. The riser bale control box of claim 4, wherein: The bow-up relay circuit is composed of the first circuit and the second circuit in parallel, the first circuit is composed of two first bow-up relays in parallel; one second bow-up relay is connected in series on the second circuit; the output end of the first outer sensor signal path is electrically connected with the power output end through the contact of the second bow-up relay.

6. The riser bale control box of claim 4, wherein: The bow-down relay circuit is composed of the third circuit and the fourth circuit in parallel, the third circuit is composed of two first bow-down relays in parallel; one second bow-down relay is connected in series on the fourth circuit, and the output end of the second outer sensor signal path is electrically connected with the power output end through the contact of the second bow-down relay.

7. The lift bow control box of claim 1, wherein: The level of the bow-up relay circuit is 24VDC in the bow-up state.

8. The lift bow control box of claim 1, wherein: The level of the bow-down relay circuit is 24VDC in the bow-down state.

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