A vehicle-mounted manual transfer switch box for a rail vehicle

Abstract

This invention discloses an on-board manual changeover switch box for rail vehicles, comprising an operation module, a box body, and an execution module and a changeover switch module installed inside the box body. The operation module includes an operation panel assembly, an operation shaft, and an unlocking shaft. The operation panel assembly includes an operation panel, an operation handle, and an unlocking handle. The execution module includes a locking mechanism and an execution mechanism. The two ends of the operation shaft are respectively connected to the operation handle and the execution mechanism via two universal joints, allowing the user to operate the execution mechanism via the operation handle. The two ends of the unlocking shaft are respectively connected to the unlocking handle and the locking mechanism via two universal joints, allowing the user to operate the locking mechanism via the unlocking handle. The execution mechanism controls the switching of the changeover switch module. The locking mechanism enables the locking and unlocking of the execution mechanism, thereby limiting the working range of the execution mechanism.

Description

Technical Field

[0001] This invention relates to the field of electrical systems for rail vehicles, and in particular to an on-board manual transfer switch box for rail vehicles. Background Technology

[0002] In traditional power distribution systems, transfer switches are mostly driven by motors, which offer advantages such as fast response, rapid switching, and remote operation. However, it's worth noting that the introduction of motors, controllers, and other electrical and electronic components into the transfer switch leads to disadvantages such as low reliability and high maintenance costs. This is especially true for onboard transfer switches used in rail vehicles, which, due to their installation on the vehicle, must operate in environments subject to vibration, shock, and strong electromagnetic interference, making their reliability a critical consideration. Therefore, manual transfer switches have gradually gained attention and acceptance due to their simple structure, convenient maintenance, and high reliability. Furthermore, electrical equipment in rail vehicles, particularly subway vehicles, is often installed on the exterior of the vehicle body, exposed to rain, snow, and sandstorms, making their operating environment quite harsh. Therefore, designing a manual transfer switch that simultaneously possesses high reliability and high environmental protection performance is the direction for the development of onboard electrical systems, but it also presents numerous difficulties and challenges. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides the following technical solution:

[0004] A manual changeover switch box for rail vehicles includes an operation module, a box body, and an execution module and a changeover switch module installed inside the box body.

[0005] The operation module includes an operation panel assembly, an operation axis, and an unlocking axis;

[0006] The control panel assembly includes a control panel, a control handle, and an unlocking handle;

[0007] The execution module includes a locking mechanism and an execution mechanism;

[0008] The two ends of the operating shaft are respectively connected to the operating handle and the actuator through two universal joints, so that the user can operate the actuator through the operating handle;

[0009] The two ends of the unlocking shaft are respectively connected to the unlocking handle and the locking mechanism through two universal joints, so that the user can operate the locking mechanism through the unlocking handle;

[0010] The actuator is used to control the switching of the changeover switch module;

[0011] The locking mechanism can lock and unlock the actuator, thereby limiting the working range of the actuator.

[0012] In some embodiments, the actuator includes a motion shaft, on which a first retaining ring and a second retaining ring are sleeved;

[0013] The motion shaft and the operating shaft are connected by a universal joint, so that the motion shaft can rotate with the rotation of the operating shaft, and drive the first retaining ring and the second retaining ring to rotate synchronously.

[0014] Both the first retaining ring and the second retaining ring are provided with baffles, and there is a preset angle difference between the baffles on the first retaining ring and the second retaining ring;

[0015] The locking mechanism includes a lead screw and a locking element;

[0016] The lead screw is connected to the unlocking shaft via a universal joint, allowing the lead screw to rotate as the unlocking shaft rotates.

[0017] The lead screw is used to convert its own rotation into linear motion of the locking member along the direction of the lead screw, and the locking member can move between a first position and a second position;

[0018] The locking member is provided with a baffle. When the locking member is in the first position, the baffle on the locking member is located on the rotation path of the baffle on the first retaining ring.

[0019] When the locking member is in the second position, the baffle on the locking member is located on the rotation path of the baffle on the second retaining ring.

[0020] In some embodiments, the on-board manual changeover switch box for rail vehicles includes two sets of identical operating modules, which are symmetrically arranged on the left and right sides of the box.

[0021] The operating axes of the two sets of operating modules are respectively connected to the left and right ends of the motion axis via universal joints;

[0022] The unlocking shafts of the two operating modules are connected to the left and right ends of the lead screw via universal joints.

[0023] In some embodiments, the control panel assemblies and housings of the left and right control modules are provided with several mounting holes, and the control panel assemblies and housings of the left and right control modules are fixedly installed on the left, right and middle parts of the vehicle body by bolt connection.

[0024] In some embodiments, the execution module further includes a back plate fixedly installed inside the housing, the back plate having an arc groove.

[0025] The locking mechanism also includes rollers;

[0026] The locking element is a nut structure, and the locking element is sleeved on the lead screw and threadedly connected to the lead screw;

[0027] The side of the locking member is fixedly connected to the axle of the roller. The roller is installed in the arc groove and can rotate within the range of the arc groove, thereby restricting the movement of the locking member between the first position and the second position.

[0028] In some embodiments, the actuator further includes an actuating shaft, a gear mechanism, and a rotating arm;

[0029] The gear mechanism includes two meshing gears, one of which is mounted on the motion shaft and rotates synchronously therewith, and the other gear is mounted on the actuation shaft and rotates synchronously therewith, so that when the motion shaft rotates, the actuation shaft can be driven to rotate through the gear mechanism;

[0030] The rotating arm is fixedly mounted on the actuating shaft, and the rotating arm is used to directly control the operation of the changeover switch module.

[0031] In some embodiments, the changeover switch module includes an incoming line conductor bus, a normal power supply position conductor bus, a changeover switch, an insulating support component, a power supply component, and an insulating connecting rod;

[0032] The incoming conductive busbar, the normal power supply conductive busbar, and the insulating support components are fixed in one area inside the box by bolts, and the power supply component is fixed in another area inside the box by bolts.

[0033] The two ends of the insulating connecting rod are respectively connected to the end of the rotating arm and the middle of the switching switch;

[0034] One end of the switching switch is rotatably mounted on the incoming conductor bus via a rotating shaft;

[0035] The other end of the switching switch can switch between the normal power supply position, the intermediate position, and the warehouse power supply position under the drive of the rotating arm and the insulating connecting rod;

[0036] In the normal power supply position, the switching switch is connected to the normal power supply position busbar;

[0037] When the power supply is in the storage area, the switching switch is connected to the storage power supply component;

[0038] In the intermediate position, the switching switch is not connected to the normal power supply busbar and the power supply components of the storage unit.

[0039] In some embodiments, the device further includes a high-voltage cam switch assembly and a high-voltage terminal block assembly installed within the housing;

[0040] The high-voltage cam switch assembly includes a mounting bracket and two high-voltage cam switches installed in parallel on the mounting bracket.

[0041] The mounting bracket and high-voltage terminal block assembly are both fixedly installed inside the enclosure.

[0042] The high-voltage terminal block assembly is used to connect two high-voltage cam switches to an external discharge circuit.

[0043] The execution module also includes two high-pressure cams mounted on the motion shaft;

[0044] The positions of the two high-voltage cams correspond to the positions of the two high-voltage cam switches, so that when the motion shaft rotates to a preset angle and the switching switch is in the middle position, the two high-voltage cams can trigger the two high-voltage cam switches.

[0045] In some embodiments, the execution module further includes an auxiliary switch assembly and a fixed-angle stop mechanism;

[0046] The auxiliary switch assembly includes several auxiliary switch cams mounted on the motion shaft and several auxiliary switches mounted on the back plate;

[0047] When the motion shaft rotates, it drives several auxiliary switch cams to rotate synchronously and triggers several corresponding auxiliary switches at a specific angle;

[0048] The fixed-angle stop mechanism includes a fixed friction ring and a movable friction ring;

[0049] The movable friction ring is installed at one end of the actuating shaft and can rotate synchronously with the actuating shaft;

[0050] The fixed friction ring is fixedly installed on the back plate and is located at the position corresponding to the movable friction ring;

[0051] The fixed friction ring and the movable friction ring are provided with a structure that can block each other, so that when the actuator rotates to a preset angle and the switching switch is in the power supply position, the fixed friction ring and the movable friction ring block each other, thereby limiting the continued rotation of the actuator.

[0052] In some embodiments, the enclosure includes a stainless steel shell with a plurality of maintenance windows, each of which is fitted with a sealing cover.

[0053] The stainless steel housing is also equipped with several cable clamps and several connectors, which are used to realize electrical connections between the inside and outside of the housing.

[0054] Compared with the prior art, the beneficial effects of the present invention are:

[0055] The present invention provides a vehicle-mounted manual changeover switch box for rail vehicles. By manually rotating the operating handle and unlocking handle, the operating torque is transmitted to the changeover switch module inside the box via a universal joint, operating shaft, and unlocking shaft, enabling position switching and mechanical locking / unlocking of the changeover switch. The device incorporates a mechanical locking mechanism, requiring the operator to follow a specific procedure to properly unlock and operate the changeover switch, thus avoiding safety risks caused by operator error. Furthermore, the entire device is manually operated, without internal motors or other electronic components. As a vehicle-mounted device, it possesses high resistance to shock and vibration and is unaffected by complex electromagnetic interference on the vehicle, resulting in high operational reliability. Attached Figure Description

[0056] Figure 1 A schematic diagram of the overall appearance of the on-board manual changeover switch box for rail vehicles provided by the present invention;

[0057] Figure 2 for Figure 1 A schematic diagram of the internal structure of the box;

[0058] Figure 3 for Figure 2 A schematic diagram of the internal structure of the box;

[0059] Figure 4 for Figure 2 A schematic diagram of the execution module in the diagram. Detailed Implementation

[0060] To make the technical means, creative features, objectives and effects of this invention easier to understand, the following description, in conjunction with the accompanying drawings and specific embodiments, further explains how this invention is implemented.

[0061] Reference Figures 1-4 As shown, the present invention provides an on-board manual changeover switch box for rail vehicles, including an operation module, a box 5, and an execution module 6 and a changeover switch module 7 installed in the box 5.

[0062] Specifically, the operation module includes an operation panel assembly 1, an operation shaft 3, and an unlocking shaft 4; the operation panel assembly 1 includes an operation panel 13, an operation handle 11, and an unlocking handle 12; the execution module 6 includes a locking mechanism 62 and an execution mechanism 63; both ends of the operation shaft 3 are connected to the operation handle 11 and the execution mechanism 63 respectively through two universal joints 2, allowing the user to operate the execution mechanism 63 through the operation handle 11; both ends of the unlocking shaft 4 are connected to the unlocking handle 12 and the locking mechanism 62 respectively through two universal joints 2, allowing the user to operate the locking mechanism 62 through the unlocking handle 12; the execution mechanism 63 is used to control the switching of the changeover switch module 7; the locking mechanism 62 can lock and unlock the execution mechanism 63, thereby limiting the working range of the execution mechanism 63.

[0063] Preferably, refer to Figure 4 As shown, the actuator 63 includes a motion shaft 632, on which a first retaining ring 635 and a second retaining ring 636 are fitted. The motion shaft 632 is connected to the operating shaft 3 via a universal joint 2, allowing the motion shaft 632 to rotate with the operating shaft 3, and driving the first retaining ring 635 and the second retaining ring 636 to rotate synchronously. Both the first retaining ring 635 and the second retaining ring 636 are provided with baffles, and there is a preset angle difference between the baffles on the first retaining ring 635 and the second retaining ring 636.

[0064] The locking mechanism 62 includes a lead screw 621 and a locking member 622; the lead screw 621 is connected to the unlocking shaft 4 via a universal joint 2, so that the lead screw 621 can rotate with the rotation of the unlocking shaft 4; the lead screw 621 is used to convert its own rotation into linear motion of the locking member 622 along the direction of the lead screw 621, and the locking member 622 can move between a first position and a second position.

[0065] Furthermore, a baffle is provided on the locking member 622. When the locking member 622 is in the first position, the baffle on the locking member 622 is located on the rotation path of the baffle on the first retaining ring 635; when the locking member 622 is in the second position, the baffle on the locking member 622 is located on the rotation path of the baffle on the second retaining ring 636.

[0066] Preferably, refer to Figure 1As shown, the on-board manual switch box for the rail vehicle includes two identical operating modules, symmetrically arranged on the left and right sides of the box body 5. The operating shafts 3 of the two operating modules are connected to the left and right ends of the motion shaft 632 via universal joints 2, respectively. The unlocking shafts 4 of the two operating modules are connected to the left and right ends of the lead screw 621 via universal joints 2, respectively. Both the operating plate assemblies 1 of the left and right operating modules and the box body 5 have several mounting holes. The operating plate assemblies 1 and the box body 5 of the left and right operating modules are fixedly installed on the left, right, and middle parts of the vehicle body using bolt connections, respectively. This arrangement allows the user to operate from both directions.

[0067] Preferably, refer to Figure 4 As shown, the execution module 6 also includes a back plate 61 fixedly installed inside the housing 5, and the back plate 61 has an arc groove 611. The locking mechanism 62 also includes a roller 623. The locking member 622 is a nut structure, which is sleeved on the lead screw 621 and threadedly connected to the lead screw 621. The side of the locking member 622 is fixedly connected to the axle of the roller 623. The roller 623 is installed in the arc groove 611 and can rotate within the range of the arc groove 611, thereby restricting the movement of the locking member 622 between the first position and the second position.

[0068] Understandably, the roller 623 is installed in the arc groove 611, which restricts the movement of the locking member 622. When the lead screw 621 rotates, the locking member 622 can only move back and forth along the axis of the rotating lead screw 621, and cannot rotate radially. Moreover, the range of its back and forth movement is limited.

[0069] Furthermore, referring to Figure 4 As shown, the actuator 63 also includes an actuator shaft 633, a gear mechanism 634, and a rotating arm 631. The gear mechanism 634 includes two meshing gears, one of which is mounted on the motion shaft 632 and rotates synchronously therewith, and the other gear is mounted on the actuator shaft 633 and rotates synchronously therewith, so that when the motion shaft 632 rotates, it can drive the actuator shaft 633 to rotate through the gear mechanism 634. The rotating arm 631 is fixedly mounted on the actuator shaft 633, and the rotating arm 631 is used to directly control the operation of the changeover switch module 7.

[0070] Furthermore, referring to Figure 3 As shown, the changeover switch module 7 includes an incoming line conductor 71, a normal power supply conductor 72, a changeover knife switch 73, an insulating support component 74, a storage power supply component 75, and an insulating connecting rod 76. The incoming line conductor 71, the normal power supply conductor 72, and the insulating support component 74 are fixed in one area inside the housing 5 by bolts, and the storage power supply component 75 is fixed in another area inside the housing 5 by bolts.

[0071] The two ends of the insulating connecting rod 76 are respectively connected to the end of the rotating arm 631 and the middle of the switching switch 73; one end of the switching switch 73 is rotatably mounted on the incoming conductor bus 71 via a rotating shaft; the other end of the switching switch 73 can switch between the normal power supply position, the intermediate position, and the warehouse power supply position under the drive of the rotating arm 631 and the insulating connecting rod 76: in the normal power supply position, the switching switch 73 is connected to the normal power supply conductor bus 72; in the warehouse power supply position, the switching switch 73 is connected to the warehouse power supply component 75; in the intermediate position, the switching switch 73 is not connected to either the normal power supply conductor bus 72 or the warehouse power supply component 75.

[0072] Preferably, refer to Figure 3 As shown, the on-board manual changeover switch box for the rail vehicle also includes a high-voltage cam switch assembly 8 and a high-voltage terminal block assembly 9 installed inside the box body 5; the high-voltage cam switch assembly 8 includes a mounting bracket 82 and two high-voltage cam switches 81 installed in parallel on the mounting bracket 82; the mounting bracket 82 and the high-voltage terminal block assembly 9 are both fixedly installed inside the box body 5; the high-voltage terminal block assembly 9 is used to connect the two high-voltage cam switches 81 to the external discharge circuit.

[0073] Additionally, refer to Figure 4 As shown, the execution module 6 also includes two high-voltage cams 65 mounted on the motion shaft 632; the two high-voltage cams 65 correspond to the positions of the two high-voltage cam switches 81, so that when the motion shaft 632 rotates to a preset angle and the changeover switch 73 is in the middle position, the two high-voltage cams 65 can trigger the two high-voltage cam switches 81 to realize the system circuit discharge.

[0074] Preferably, refer to Figure 4 As shown, the execution module 6 also includes an auxiliary switch assembly 64 and a fixed-angle stop mechanism.

[0075] The auxiliary switch assembly 64 includes several auxiliary switch cams 642 mounted on the motion shaft 632 and several auxiliary switches 641 mounted on the back plate 61. When the motion shaft 632 rotates, it drives the several auxiliary switch cams 642 to rotate synchronously and triggers the corresponding several auxiliary switches 641 at a specific angle, thereby realizing the switching and transmission of signals from the auxiliary switches 641.

[0076] The fixed-angle stop mechanism includes a fixed friction ring (not shown in the figure) and a movable friction ring 66. The movable friction ring 66 is installed at one end of the actuator shaft 633 and can rotate synchronously with the actuator shaft 633. The fixed friction ring is fixedly installed on the back plate 61 and is located at a position corresponding to the movable friction ring 66. The fixed friction ring and the movable friction ring 66 are provided with a structure that can block each other, so that when the actuator shaft 633 rotates to the switch 73 at the power supply position, the fixed friction ring and the movable friction ring 66 block each other, thereby limiting the continued rotation of the actuator shaft 633.

[0077] In addition, such as Figure 4 As shown, the outer side of the movable friction ring 66 may also be provided with a disc spring, a fixing nut and a washer, etc., so as to provide a fixed preload for the engagement of the fixed friction ring and the movable friction ring 66. Under the action of the preload, when the fixed friction ring and the movable friction ring 66 are about to block each other, they will collide quickly and emit a positioning prompt sound.

[0078] Furthermore, referring to Figure 1 As shown, the enclosure 5 includes a stainless steel shell 51, on which several maintenance windows are provided, and each maintenance window is equipped with a sealing cover 52; several cable clamps 53 and several connectors are also installed on the stainless steel shell 51, and the cable clamps 53 and connectors are used to realize electrical connection between the inside and outside of the enclosure 5.

[0079] Understandably, when the user rotates the operating handle 11, it drives the motion shaft 632 and the auxiliary switch cam 642, high-voltage cam 65, first retaining ring 635, and second retaining ring 636 mounted on it to rotate synchronously. This, in turn, drives the actuator shaft 633 to rotate at a certain angle ratio via the gear mechanism 634, ultimately causing the changeover switch 73 to rotate, thus switching the working position of the changeover switch box. Additionally, when the user rotates the unlocking handle 22, it drives the rotating lead screw 621 to rotate, causing the locking element 622 to move back and forth along the axis of the rotating lead screw 621, thereby achieving the unlocking operation.

[0080] In one specific embodiment, the working process of the on-board manual transfer switch box for rail vehicles is as follows:

[0081] Taking the operation of manually switching the changeover switch 73 from its initial normal power supply position to the warehouse power supply position as an example, firstly, manually operate the operating handle 11 to rotate towards the warehouse power supply position. After rotating clockwise / counterclockwise to a certain angle (e.g., 20°), the baffle on the first retaining ring 635 rotates until it is in contact with the baffle structure of the locking member 622 and cannot be rotated further, thus locking the operating handle 11. Continue rotating the unlocking handle 12 clockwise / counterclockwise a fixed number of turns. The locking member 622 moves along the lead screw 621, causing the baffle structure of the locking member 622 to disengage from the baffle structure of the first retaining ring 635 and enter the rotation area of ​​the second retaining ring 636, unlocking the operating handle 11. Continue rotating the operating handle 11 clockwise / counterclockwise to a certain angle (e.g., 40°), and the changeover switch 73 switches to the intermediate position. In this position, the changeover switch 73 is not connected to the copper busbars of either the normal power supply position or the warehouse power supply position. Upon contact, the high-voltage cam switch 81 at this position is triggered and closed, discharging the system circuit and ensuring safety. After continuing to rotate the operating handle 11 clockwise / counterclockwise to a certain angle (e.g., 40°), the baffle structure of the second retaining ring 636 rotates until it is in contact with the baffle structure of the straight nut 622 and cannot continue to rotate, thus locking the operating handle 11 again. After continuing to rotate the unlocking handle 12 counterclockwise / clockwise for a fixed number of turns, the rotation direction is opposite to the previous operation of the unlocking handle 12, causing the locking member 622 to move in the opposite direction along the screw 621. The baffle structure of the locking member 622 is released from contact with the baffle structure of the second retaining ring 636 and enters the rotation area of ​​the first retaining ring 635, thus unlocking the operating handle 11. After continuing to rotate the operating handle 11 clockwise to a certain angle (e.g., 20°), the changeover switch 73 switches to the storage potential, and the working position switching of the changeover switch box is completed.

[0082] Understandably, if the switching switch 73 is to be switched from the warehouse power supply position to the normal power supply position, the operation can be reversed.

[0083] In summary, the on-board manual changeover switch box for rail vehicles provided by this invention can be used for no-load switching of DC circuits. First, except for the operating panel assembly 1, operating shaft 3, and unlocking shaft 4, all other components are integrated with a sealable stainless steel housing 51, which reduces the difficulty of equipment installation, maintenance, and repair, and also meets the equipment's protection requirements for outdoor working environments. The operating and unlocking handles are manually rotated, and the operating torque is transmitted to the changeover switch module 7 inside the housing 5 via the universal joint 2, operating shaft 3, and unlocking shaft 4, realizing the position switching and mechanical locking / unlocking of the changeover switch. The equipment has an internal mechanical locking mechanism, requiring the operator to follow a specific procedure to properly unlock and switch operating positions, avoiding safety risks caused by operator error. Furthermore, the entire device is manually operated, with a simple structure and no internal motors or other electronic components. As an on-board device, it has high resistance to shock and vibration and is unaffected by complex electromagnetic interference on the vehicle, thus possessing high operational reliability.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An on-board manual transfer switch box for a rail vehicle, characterized in that, The box (5) comprises an operation module, a box (5), and an execution module (6) and a change-over switch module (7) installed in the box (5); The operation module comprises an operation plate assembly (1), an operation shaft (3), and an unlocking shaft (4); The operation plate assembly (1) comprises an operation panel (13), an operation handle (11), and an unlocking handle (12); The execution module (6) comprises a locking mechanism (62) and an execution mechanism (63); The two ends of the operation shaft (3) are respectively connected with the operation handle (11) and the execution mechanism (63) through two universal joints (2), so that the user can operate the execution mechanism (63) through the operation handle (11); The two ends of the unlocking shaft (4) are respectively connected with the unlocking handle (12) and the locking mechanism (62) through two universal joints (2), so that the user can operate the locking mechanism (62) through the unlocking handle (12); The execution mechanism (63) is used for controlling the switching of the change-over switch module (7); The locking mechanism (62) can lock and unlock the execution mechanism (63), thereby limiting the working range of the execution mechanism (63); The execution mechanism (63) comprises a movement shaft (632), and a first blocking ring (635) and a second blocking ring (636) are sleeved on the movement shaft (632); The movement shaft (632) and the operation shaft (3) are connected through a universal joint (2), so that the movement shaft (632) can rotate with the rotation of the operation shaft (3) and drive the first blocking ring (635) and the second blocking ring (636) to rotate synchronously; The first blocking ring (635) and the second blocking ring (636) are provided with baffles, and the baffles on the first blocking ring (635) and the second blocking ring (636) have a preset angle difference; The locking mechanism (62) comprises a lead screw (621) and a locking piece (622); The lead screw (621) and the unlocking shaft (4) are connected through a universal joint (2), so that the lead screw (621) can rotate with the rotation of the unlocking shaft (4); The lead screw (621) is used for converting the rotation of the lead screw (621) into the linear motion of the locking piece (622) along the direction of the lead screw (621), and the locking piece (622) can move between a first position and a second position; The locking piece (622) is provided with a baffle, and when the locking piece (622) is located at the first position, the baffle on the locking piece (622) is located on the rotation path of the baffle on the first blocking ring (635); When the locking piece (622) is located at the second position, the baffle on the locking piece (622) is located on the rotation path of the baffle on the second blocking ring (636).

2. The on-board manual transfer switch box for a rail vehicle according to claim 1, characterized in that The rail vehicle on-board manual change-over switch box comprises two sets of operation modules with the same structure, and the two sets of operation modules are symmetrically arranged on the left and right sides of the box (5); The operation shafts (3) of the two sets of operation modules are respectively connected with the left and right ends of the movement shaft (632) through universal joints (2); The unlocking shafts (4) of the two sets of operation modules are respectively connected with the left and right ends of the lead screws (621) through universal joints (2).

3. The on-board manual transfer switch box for a rail vehicle according to claim 2, characterized in that A plurality of mounting holes are formed on the operation plate assembly (1) and the box (5) of the left and right operation modules, and the operation plate assembly (1) and the box (5) of the left and right operation modules are fixedly installed on the left side, the right side and the middle part of the vehicle body by bolt connection.

4. The on-board manual transfer switch box for a rail vehicle according to claim 1, characterized in that, The execution module (6) further comprises a back plate (61) fixedly installed in the box (5), and an arc slot (611) is formed on the back plate (61); The locking mechanism (62) further comprises a roller (623); The locking member (622) is a nut structure, which is sleeved on the screw rod (621) and is in threaded connection with the screw rod (621); The side surface of the locking member (622) is fixedly connected with the wheel shaft of the roller (623), the roller (623) is installed in the arc slot (611) and can rotate within the range of the arc slot (611), thereby limiting the movement of the locking member (622) between the first position and the second position.

5. The on-board manual transfer switch box for a rail vehicle according to claim 4, characterized in that The execution mechanism (63) further comprises an execution shaft (633), a gear mechanism (634) and a rotating arm (631); The gear mechanism (634) comprises two gears which are engaged with each other, one of the gears is sleeved on the movement shaft (632) and rotates synchronously, and the other gear is sleeved on the execution shaft (633) and rotates synchronously, so that the movement shaft (632) can drive the execution shaft (633) to rotate through the gear mechanism (634) when the movement shaft (632) rotates; The rotating arm (631) is fixedly installed on the execution shaft (633), and the rotating arm (631) is used for directly controlling the operation of the change-over switch module (7).

6. The on-board manual transfer switch box for a rail vehicle according to claim 5, characterized in that The change-over switch module (7) comprises an incoming line conductive row (71), a normal power supply potential conductive row (72), a change-over knife switch (73), an insulating support component (74), a library power supply component (75) and an insulating connecting rod (76); The incoming line conductive row (71), the normal power supply potential conductive row (72) and the insulating support component (74) are fixedly arranged in one region inside the box (5) by a bolt structure, and the library power supply component (75) is fixedly arranged in another region inside the box (5) by a bolt structure; The two ends of the insulating connecting rod (76) are respectively connected with the end of the rotating arm (631) and the middle part of the change-over knife switch (73); One end of the change-over knife switch (73) is rotatably installed on the incoming line conductive row (71) through a rotating shaft; The other end of the change-over knife switch (73) can be switched between the normal power supply potential, the intermediate position and the library power supply potential under the driving of the rotating arm (631) and the insulating connecting rod (76); When the normal power supply potential, the change-over knife switch (73) is connected with the normal power supply potential conductive row (72); When the library power supply potential, the change-over knife switch (73) is connected with the library power supply component (75); When the intermediate position, the change-over knife switch (73) is not connected with the normal power supply potential conductive row (72) and the library power supply component (75).

7. The on-board manual transfer switch box for a rail vehicle according to claim 6, characterized in that Further comprising a high-voltage cam switch assembly (8) and a high-voltage terminal row assembly (9) installed in the box (5); The high-voltage cam switch assembly (8) comprises a mounting support (82) and two high-voltage cam switches (81) mounted in parallel on the mounting support (82); The mounting support (82) and the high-voltage terminal strip assembly (9) are fixedly installed inside the box body (5); The high-voltage terminal strip assembly (9) is used for connecting the two high-voltage cam switches (81) and an external discharge circuit; The execution module (6) further comprises two high-voltage cams (65) mounted on the movement shaft (632); The two high-voltage cams (65) correspond to the positions of the two high-voltage cam switches (81), so that when the movement shaft (632) is rotated to a preset angle and the switching knife switch (73) is at the middle position, the two high-voltage cams (65) can trigger the two high-voltage cam switches (81).

8. The on-board manual transfer switch box for a rail vehicle according to claim 7, characterized in that The execution module (6) further comprises an auxiliary switch assembly (64) and a fixed-angle stop mechanism; The auxiliary switch assembly (64) comprises a plurality of auxiliary switch cams (642) mounted on the movement shaft (632) and a plurality of auxiliary switches (641) mounted on the back plate (61); When the movement shaft (632) rotates, the plurality of auxiliary switch cams (642) are driven to rotate synchronously and trigger the corresponding plurality of auxiliary switches (641) at a specific angle; The fixed-angle stop mechanism comprises a fixed friction ring and a movable friction ring (66); The movable friction ring (66) is mounted on one end of the execution shaft (633) and can rotate synchronously with the execution shaft (633); The fixed friction ring is fixedly installed on the back plate (61) and located at a position corresponding to the movable friction ring (66); The fixed friction ring and the movable friction ring (66) are provided with structures capable of blocking each other, so that when the execution shaft (633) is rotated by a preset angle and the switching knife switch (73) is at the power supply position, the fixed friction ring and the movable friction ring (66) block each other, thereby limiting the continuous rotation of the execution shaft (633).

9. The on-board manual transfer switch box for a rail vehicle according to claim 1, characterized in that, The box body (5) comprises a stainless steel shell (51), and a plurality of maintenance windows are formed in the stainless steel shell (51), and a sealing cover plate (52) is installed at each maintenance window; The stainless steel shell (51) is further provided with a plurality of cable clamps (53) and a plurality of connectors, and the cable clamps (53) and the connectors are used to realize electrical connection between the inside and outside of the box body (5).

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