A turnout conversion device and method applicable to tramways

Abstract

The present invention relates to a turnout conversion device and method applicable to tramways. The action rod and the detection rod are located above the bottom shell and are at the same horizontal plane position as the turnout connecting member. When pushing or pulling the turnout, the force output by the switch machine and the displacement transmitted from the turnout to the detection rod are on the same axis, with small transmission errors. The switch machine locks the turnout in an elastic locking manner, which can provide protection against turnout squeezing for the turnout and the equipment in case of turnout squeezing. In the case of non-electric operating equipment, the conversion device can be manually moved with tools to switch the turnout, and the operation is simple. The sealing of the switch machine box meets the sealing requirements of IP67 protection level, and short-time immersion does not affect the function of the equipment, with good dust and water protection performance.

Description

Technical Field

[0001] The present invention belongs to the turnout conversion equipment for rail transit, and particularly relates to a turnout conversion equipment and method applicable to tram turnouts. Background Art

[0002] The turnout conversion equipment is used to change the opening direction of the track. The turnout conversion equipment is generally applied outdoors and requires a high protection level, high safety, high reliability, long life, and compact space. The turnout conversion equipment is a prerequisite for the safe and efficient operation of rail transportation. With the development of urban trams, in some sections of the line, there is a need for the tram transportation system to share the road rights with other road systems in the city. The existing switch equipment cannot fully meet the current demand of rail transportation. Summary of the Invention

[0003] The object of the present invention is to provide a turnout conversion equipment and method applicable to tram turnouts, which has a compact structure, high reliability, high protection level, and can share the road rights with other transportation systems.

[0004] To solve the above problems, the technical solution of the present invention is: a turnout conversion equipment applicable to trams, comprising: a bottom case, internal machine terminals, a motor, a speed reducer, a reduction gear, an automatic switch, a contact group, a detection rod, an operating rod, a sealing group, a manual box, a spring locking mechanism, a main shaft, a manual switch, a machine cover, and a cable connector. The internal machine terminals, the motor, the speed reducer, the reduction gear, the automatic switch, the contact group, the detection rod, the operating rod, the sealing group, the manual box, the spring locking mechanism, the main shaft group, the manual switch, the machine cover, and the cable connector are respectively installed in the bottom case. The upper end of the bottom case is the machine cover, and the above components are sealed by the machine cover. There is a cable connector port on one side of the bottom case, and the cable connector port is fixed on the bottom case.

[0005] The bottom case serves as the installation base, providing installation positioning and support for other components of the switch machine. The internal machine terminals are installed on the right bottom side of the bottom case, and the operating rod and the detection rod are installed in parallel on the left bottom side of the bottom case. The operating rod and the detection rod are located at the upper part of the bottom case.

[0006] The speed reducer and the motor are fixed one above the other on the left side of the bottom case inside the machine terminals, and the fixed speed reducer and the motor are parallel to the operating rod and the detection rod.

[0007] The reduction gear, the automatic switch, and the contact group are fixed in sequence from right to left between the detection rod and the fixed speed reducer and the motor.

[0008] There are two groups of contact groups, which are distributed at one above the other positions of the bottom case.

[0009] The operating rod and the detection rod penetrate through the upper and lower parts of the bottom case, and the penetration length of the detection rod is greater than that of the operating rod.

[0010] Two sets of elastic locking mechanisms are distributed above and below the position between the action rod and the detection rod, and the two sets of elastic locking mechanisms are connected by a horizontal main shaft group.

[0011] The main shaft group passes through the two sets of elastic locking mechanisms, the action rod and the opening on the left side of the bottom case to the manual box, and is connected to the manual switch of the manual box.

[0012] Elastic locking mechanisms are installed on the main shaft group.

[0013] The sealing group, the machine cover and the cable joint are hermetically connected to the bottom case.

[0014] The working principle of the present invention is as follows: during operation, when the control circuit supplies rated power to the motor, the motor provides power for the speed reducer and the reducer conversion of the switch machine. The high-speed and small-torque output of the motor is converted by the speed reducer and the reducer to provide a large-torque force with low speed for the main shaft group. The gear of the main shaft group meshes with the rack block of the action rod, converting the rotational motion into the linear motion of the action rod. The action rod is connected to the switch rail, pushing or pulling to switch the turnout.

[0015] The advantages of the present invention are:

[0016] 1. The action rod and the detection rod are located at the upper part of the bottom case and are in the same horizontal plane as the turnout connecting rod. When pushing or pulling the turnout, the force output by the switch machine and the displacement transmitted from the turnout to the detection rod are on the same axis, with small transmission error.

[0017] 2. The switch machine locks the turnout in an elastic locking manner, which can provide the function of protecting the turnout and the equipment in case of squeezing the turnout.

[0018] 3. In the case of non-electrically operating the equipment, the turnout can be switched manually with tools, and the operation is simple.

[0019] 4. The box body of the switch machine is sealed according to the sealing requirements of IP67 protection level, and short-time immersion does not affect the function of the equipment, with good dust and water protection performance.

[0020] The present invention will be further described below in conjunction with the accompanying drawings of the embodiments. Description of the Drawings

[0021] Figure 1 It is the top view of the structural schematic diagram of the switch machine in this embodiment;

[0022] Figure 2 It is the front view of the structural schematic diagram of the switch machine in this embodiment;

[0023] Figure 3 It is the structural principle diagram of the switch machine;

[0024] Figure 4is a schematic structural diagram of the elastic locking mechanism 12;

[0025] Figure 5 is a top view of the switch point contact linkage mechanism diagram;

[0026] Figure 6 is a right view of the switch point contact linkage mechanism diagram.

[0027] In the figure: 1. Bottom shell; 2. Internal terminal; 3. Motor; 4. Reducer; 5. Reducing gear; 6. Automatic switch; 7. Contact group; 8. Detection rod; 9. Operating rod; 10. Sealing group; 11. Manual box; 12. Elastic locking mechanism; 13. Main shaft; 14. Manual switch; 15. Machine cover; 16. Cable joint; 17. Elastic seat, 18. Elastic sleeve, 19. Main shaft group, 20. Locking gear, 21. Operating rod, 21. Rack block, 22. Rack, 23. Output shaft, 24. Stationary contact group, 25. Moving contact group, 26. Roller, 27. Quick-acting pawl, 28. Adjusting bracket, 29. Crankshaft. Detailed implementation manners

[0028] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined purpose, the following will describe in detail the specific implementation manners, structural features and their effects of the present invention in conjunction with the accompanying drawings and embodiments.

[0029] As Figure 1 and Figure 2 shown, the present invention relates to a switching device and method for tramway turnouts, including: bottom shell 1, internal terminal 2, motor 3, reducer 4, reducing gear 5, automatic switch 6, contact group 7, detection rod 8, operating rod 9, sealing group 10, manual box 11, elastic locking mechanism 12, main shaft 13, manual switch 14, machine cover 15, cable joint 16, elastic seat 17, elastic sleeve 18, main shaft group 19, locking gear 20, rack block 21, output shaft 23, stationary contact group 24, moving contact group 25, roller 26, quick-acting pawl 27, adjusting bracket 28, crankshaft 29. The internal terminal 2, motor 3, reducer 4, reducing gear 5, automatic switch 6, contact group 7, detection rod 8, operating rod 9, sealing group 10, manual box 11, elastic locking mechanism 12, main shaft 13, manual switch 14, machine cover 15, cable joint 16, elastic seat 17, elastic sleeve 18, main shaft group 19, locking gear 20, rack block 21, output shaft 23, stationary contact group 24, moving contact group 25, roller 26, quick-acting pawl 27, adjusting bracket 28, crankshaft 29 are respectively installed in the bottom shell 1. The upper end of the bottom shell 1 is the machine cover 15, which seals the above-mentioned components. There is a cable joint 16 port on one side of the bottom shell 1, and the cable joint 16 port is fixed on the bottom shell 1. Among them, the elastic seat 17, elastic sleeve 18, stationary contact group 24, moving contact group 25, roller 26, quick-acting pawl 27, adjusting bracket 28, crankshaft 29 are all symmetrically arranged.

[0030] The bottom case 1 serves as the installation foundation, providing installation positioning and support for other components of the switch machine; the internal terminal 2 is installed on the right bottom side of the bottom case 1, and the actuating rod 9 and the detection rod 8 are installed in parallel on the left bottom side of the bottom case 1.

[0031] The speed reducer 4 and the motor 3 are fixed one above the other on the left side bottom of the bottom case 1 at the left side of the internal terminal 2, and the actuating rod 9 and the detection rod 8 are parallel.

[0032] Between the detection rod 8 and the fixed speed reducer 4 and the motor 3, the reducer 5, the automatic switch 6, and the contact group 7 are fixed in sequence from right to left.

[0033] There are two groups of the described contact groups 7, which are distributed at one above the other positions of the bottom case 1.

[0034] The described actuating rod 9 and detection rod 8 penetrate through the bottom case 1 from top to bottom, and the penetration length of the detection rod 8 is greater than that of the actuating rod 9.

[0035] There are two groups of elastic locking mechanisms 12 distributed up and down at the position between the actuating rod 9 and the detection rod 8, and the two groups of elastic locking mechanisms 12 are connected by a horizontal main shaft 13.

[0036] The described main shaft 13 passes through the two groups of elastic locking mechanisms 12, the actuating rod 9, and the left side opening of the bottom case 1 to the manual box 11, and is connected to the manual switch 14 of the manual box 11.

[0037] As Figure 3 shown, the working principle of the present invention is: during operation, when the control circuit supplies the rated power to the motor 3, the motor 3 provides power for the conversion of the speed reducer 4 and the reducer 5 of the switch machine. The high rotational speed and small torque force output by the motor 3 are converted by the speed reducer 4 and the reducer 5 to provide a low rotational speed and large torque force for the main shaft 13. The gear of the main shaft 13 meshes with the rack block of the actuating rod 9, converting the rotational motion into the linear motion of the actuating rod 9. The actuating rod 9 is connected to the switch rail of the turnout, pushing or pulling to switch the turnout.

[0038] An elastic locking mechanism 12 is installed on the main shaft 13. After the main shaft 13 rotates to the in-place position, a torque is continuously applied to the main shaft 13 to hold the main shaft 13 in the specified position, thereby locking the actuating rod 9 in the specified position.

[0039] The described actuating rod 9 and detection rod 8 are arranged at the upper part of the switch machine, and are on the same axis in the height direction as the traction point of the turnout, and the force transmission is on the same axis.

[0040] When the reverse acting force on the actuating rod 9 is greater than the holding force of the elastic locking mechanism (such as a turnout squeeze), the reverse acting force will push the main shaft 13 to rotate in the reverse direction, playing a protective role for the conversion equipment and the turnout.

[0041] While the main shaft 13 rotates in the reverse direction, the linkage mechanism inside the switch machine (see Figure 5 and Figure 6 ) will drive the contact group 7 to act, cut off the indication circuit, and give an indication. When the main shaft 13 rotates more than half of the conversion rotation angle, the thrust of the elastic mechanism can cause the switch machine to be converted to the other side.

[0042] When the action rod 9 pushes and pulls the turnout, the turnout will drive the detection rod 8 to slide axially. When the turnout moves to the specified position, the detection rod 8 will also move to the specified position, and the linkage mechanism inside the switch machine will drive the contact group 7 to act, connect the indication circuit, and give an indication of the turnout position.

[0043] When there is a power failure or manual operation of the switch machine is required, insert a manual tool - a control lever at the manual box 11 of the switch machine to manually operate the switch machine for conversion. After inserting the manual control lever, the manual switch 14 will disconnect the action circuit of the switch machine to prevent electric injury during manual operation.

[0044] The sealing group 10 and the detection rod 8, the action rod 9 and the bottom shell 1 adopt a multi - sealing method. The connections between the machine cover 15 and the bottom shell 1, and the cable connector 16 and the bottom shell 1 are all sealed connections, and the protection level of the seal is IP67.

[0045] After the action rod 9 is rigidly connected to the rack block 21, it is installed through the side wall of the bottom shell 1 and can slide axially; two elastic seats 17 are fixed on the bottom surface inside the bottom shell 1, and two elastic sleeves 18 are respectively connected to the two elastic seats 17 and the main shaft pin - type. A compression spring is installed inside the elastic sleeve 18, and the elastic pre - pressure that meets the requirements is pre - adjusted. The elastic sleeve 18 can be compressed and released axially and can rotate around the pin connecting the elastic seat 17 and the main shaft 13. A locking gear 20 is installed on the main shaft 13, and the main shaft 13 and the locking gear 20 are fixedly connected and will act synchronously. The main shaft, the locking gear 20 and two sets of rotary bearings form a main shaft group 19, and the main shaft group 19 is installed on the main shaft seat of the bottom shell 1 so that the main shaft 13 can rotate around the axis. One end of the main shaft 13 is connected to the output end of the reducer 5.

[0046] The torque output by the reducer 5 drives the main shaft 13 to rotate. The main shaft 13 rotates to compress the elastic sleeve 18. At the same time, the main shaft 13 rotates to drive the locking gear 20 to rotate. The locking gear 20 meshes with the rack block 21 for transmission, driving the rack block 21 and the action rod 9 to move along the axis. After the main shaft 13 rotates in place, the automatic switch 6 disconnects the action circuit of the motor 3, and the main shaft 13 stops rotating. The elastic sleeve 18 generates a thrust as shown by the arrow. After the thrust acts on the main shaft 13, a rotational torque is generated. This torque is transmitted through the locking gear 20 and the rack block 21, and the force acts on the action rod 9 to limit the reverse action of the action rod 9 and lock the action rod 9. Figure 4 ​

[0047] When the reverse acting force on the movable part of the external switch or the actuating rod 9 is greater than the locking force applied by the elastic locking mechanism 12 to the actuating rod 9, the actuating rod 9 pushes the locking gear 20 and the main shaft 13 to rotate reversely through the rack 22 of the rack block 21. The actuating rod 9 moves reversely along the axis, playing a protective role for the switch machine and the external switch (see Figure 4 ).

[0048] As Figure 5 and Figure 6 shown, Figure 5 is the top view of the squeezing point linkage mechanism diagram; Figure 6 is the right view of the squeezing point linkage mechanism diagram. In the linkage mechanism, the output shaft 23 is connected to the main shaft 13. When the main shaft 13 rotates reversely, the output shaft 23 rotates synchronously. The inclined surface on the output shaft 23 squeezes the roller 26. The roller 26 is fixedly connected to the quick-acting claw 27, lifting the quick-acting claw 27. The quick-acting claw 27 jacks up the adjusting frame 28. The adjusting frame 28 drives the toggle shaft 29 to rotate. A moving contact group 25 is fixed on the toggle shaft 29. The moving contact group 25 rotates synchronously with the toggle shaft 29, disengages from the static contact group 24, and disconnects the Figure 5 closed contact group on the static contact group 24 in , thereby disconnecting the indicating circuit.

[0049] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A turnout conversion device applicable to tramways, characterized in that it comprises: Bottom shell (1), internal terminal (2), motor (3), speed reducer (4), reduction gear (5), automatic switch (6), contact group (7), detection rod (8), operating rod (9), sealing group (10), manual box (11), elastic locking mechanism (12), main shaft (13), manual switch (14), machine cover (15), cable joint (16). The internal terminal (2), motor (3), speed reducer (4), reduction gear (5), automatic switch (6), contact group (7), detection rod (8), operating rod (9), sealing group (10), manual box (11), elastic locking mechanism (12), main shaft (13), manual switch (14), machine cover (15), cable joint (16) are respectively installed in the bottom shell (1). The upper end of the bottom shell (1) is the machine cover (15), and the above components are sealed by the machine cover (15). There is a cable joint (16) port on one side of the bottom shell (1), and the cable joint (16) port is fixed on the bottom shell (1). The bottom shell (1) serves as the installation base, providing installation positioning and support for other components of the switch machine. The internal terminal (2) is installed on the right bottom side of the bottom shell (1), and the operating rod (9) and the detection rod (8) are installed in parallel on the left bottom side of the bottom shell (1). The internal terminal (2) is located on one side of the bottom shell (1), and the speed reducer (4) and the motor (3) are fixed front and back in the bottom shell (1), and the speed reducer (4), the motor (3), the operating rod (9), and the detection rod (8) are parallel. Between the detection rod (8) and the fixed speed reducer (4) and the motor (3), the reduction gear (5) and the automatic switch (6) are fixed in sequence from right to left, and the contact group (7) is fixed on the automatic switch. There are two groups of elastic locking mechanisms (12) distributed between the operating rod (9) and the detection rod (8), and the two groups of elastic locking mechanisms (12) are connected to the horizontal main shaft (13). The main shaft (13) passes through the two groups of elastic locking mechanisms (12), the operating rod (9), and the left side opening of the bottom shell (1) to the manual box (11), and is connected to the manual switch (14) of the manual box (11). The sealing group (10), the machine cover (15), and the cable joint (16) are hermetically connected to the bottom shell (1), the detection rod (8), and the operating rod (9).

2. The turnout conversion device applicable to tramways according to claim 1, characterized in that: The operating rod (9) and the detection rod (8) penetrate through the front and back of the bottom shell (1), and the detection rod (8) and the operating rod (9) are located at the upper part of the switch machine.

3. A method for a turnout conversion device applicable to tramways, characterized in that: It includes a tramway turnout conversion device. When the control circuit supplies rated power to the motor (3), the motor (3) provides power for the speed reducer (4) and the reducer (5) of the switch machine. The high speed and small torque force output by the motor (3) are converted by the speed reducer (4) and the reducer (5) to provide a low speed and large torque force for the main shaft (13). The gear of the main shaft (13) meshes with the rack block of the action rod (9), converting the rotational motion into the linear motion of the action rod (9). The action rod (9) is connected to the switch rail, pushing or pulling to convert the turnout; A spring-loaded locking mechanism (12) is installed on the main shaft (13). After the main shaft (13) rotates in place, a torque is continuously applied to the main shaft (13) to hold the main shaft (13) in a specified position, thereby locking the action rod (9) in the specified position; The action rod (9) and the detection rod (8) are arranged at the upper part of the switch machine and are coaxial with the traction point of the turnout in the height direction, and the force transmission is coaxial; When the reverse acting force on the action rod (9) is greater than the holding force of the spring-loaded locking mechanism, the reverse acting force will push the main shaft (13) to rotate in the reverse direction, playing a protective role for the conversion device and the turnout. While the main shaft (13) rotates in the reverse direction, the linkage mechanism inside the switch machine will drive the contact group (7) to act, cutting off the indication circuit and giving an indication. When the main shaft (13) rotates more than half of the conversion rotation angle, the thrust of the elastic mechanism can make the switch machine convert to the other side; When the action rod (9) pushes or pulls the turnout, the turnout will drive the detection rod (8) to slide axially. When the turnout moves to the specified position, the detection rod (8) will also move to the specified position at the same time, and the linkage mechanism inside the switch machine will drive the contact group (7) to act, turning on the indication circuit and giving an indication of the turnout position.

4. The method for a turnout conversion device applicable to tramways according to claim 3, characterized in that: After the action rod (9) is rigidly connected to the rack block (21), it is installed through the side wall of the bottom shell (1) and can slide axially. Two elastic seats (17) are fixed on the bottom surface inside the bottom shell (1). Two elastic sleeves (18) are respectively connected to the two elastic seats (17) and the main shaft by pins. A compression spring is installed inside the elastic sleeve (18), and a pre-adjusted elastic pre-pressure that meets the requirements is set. The elastic sleeve (18) can be compressed and released axially and can rotate around the pin connecting the elastic seat and the main shaft (13). A locking gear (20) is installed on the main shaft (13). The main shaft (13) and the locking gear (20) are fixedly connected and will act synchronously. The main shaft (13), the locking gear (20) and two sets of rotary bearings form a main shaft group (19). The main shaft group (19) is installed on the main shaft seat of the bottom shell (1) to enable the main shaft (13) to rotate around the axis. One end of the main shaft (13) is connected to the output end of the reducer (5).

5. The method for a turnout conversion device applicable to tramways according to claim 3, characterized in that: The torque output by the speed reducer (5) drives the main shaft (13) to rotate. The rotation of the main shaft (13) compresses the elastic sleeve (18). At the same time, the rotation of the main shaft (13) drives the locking gear (20) to rotate. The locking gear (20) meshes with the rack block (21) for transmission, driving the rack block (21) and the actuating rod (9) to move along the axis. After the main shaft (13) rotates in place, the automatic switch (6) disconnects the action circuit of the motor (3), and the main shaft (13) stops rotating. The elastic sleeve (18) generates a thrust. After the thrust acts on the main shaft (13), a rotational torque is generated. This torque is transmitted through the locking gear (20) and the rack block (21), and the force acts on the actuating rod (9), restricting the reverse movement of the actuating rod (9) and locking the actuating rod (9); when the reverse acting force received by the movable part of the external switch or the actuating rod (9) is greater than the locking force applied by the elastic locking mechanism (12) to the actuating rod (9), the actuating rod (9) pushes the locking gear (20) and the main shaft (13) to rotate in the reverse direction through the rack (22) of the rack block (21), and the actuating rod (9) moves in the reverse direction along the axis, playing a protective role for the switch machine and the external switch.

6. The method for a turnout conversion device applicable to tramways according to claim 3, characterized in that: In the linkage mechanism, the output shaft (23) is connected to the main shaft (13). When the main shaft (13) rotates in the reverse direction, the output shaft (23) rotates synchronously. The inclined surface on the output shaft (23) presses the roller (26). The roller (26) is fixedly connected to the quick-acting claw (27), lifting the quick-acting claw (27). The quick-acting claw (27) jacks up the adjusting frame (28). The adjusting frame (28) drives the crankshaft (29) to rotate. The moving contact group (25) is fixed on the crankshaft (29). The moving contact group (25) rotates synchronously with the crankshaft (29), disengaging from the static contact group (24) and disconnecting the closed contact group on the static contact group (24), thereby disconnecting the indication circuit.

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