Buried switch machine

Abstract

The invention discloses a buried switch machine which comprises a box body, a hydraulic power unit, a hydraulic cylinder, an action rod assembly, an indication rod assembly, a contact assembly and a steel sleeve assembly. The contact assembly comprises a contact seat, two check indication rod groups and four travel switches. The inspection indication rod sets are arranged in a longitudinal sliding mode in the direction perpendicular to the sliding direction of the cylinder barrel and elastically connected with the contact seat, and the four sets of travel switches are arranged at the two ends of the sliding direction of the two sets of inspection indication rod sets respectively. Wherein one inspection indication rod set abuts against the cylinder sleeve assembly, meanwhile, the other inspection indication rod set is disconnected with the cylinder sleeve assembly so that the two travel switches on the diagonal line can be switched on, and meanwhile the inspection indication rod set abutting against the cylinder sleeve assembly extends out to be inserted into the corresponding inspection opening in the indication rod assembly after sliding. The switch machine can simultaneously display the positions and states of the repulsion switch rail and the close contact switch rail, and is simple in structure, good in waterproof performance, high in reaction sensitivity, long in service life and high in safety.

Description

Technical Field

[0001] The invention relates to the technical field of urban rail transit, and in particular to an underground switch machine. Background Art

[0002] The existing switch machine is mainly composed of a box body, a power unit, an action rod assembly, a contact assembly, an indication rod assembly, a manual mechanism, etc., such as the switch machine of patent CN221293547U.

[0003] In this switch machine, the contact assembly is an existing conventional mechanical contact structure, which is easy to wear and easy to be polluted by the external environment. It has a complex structure and movement, poor reaction sensitivity, short service life, poor waterproof performance, and requires regular maintenance and replacement, which increases maintenance costs and labor intensity of workers. During maintenance and replacement, the line needs to be stopped, which affects the normal operation of the railway track. The sensitivity will also increase the risk of operation. Summary of the invention

[0004] The present invention provides an underground switch machine to solve the technical problems that the existing switch machines have complex structure and action, poor reaction sensitivity, short service life and poor waterproof performance, so they need frequent maintenance and replacement, which increases the maintenance cost and labor intensity of workers, and the line needs to be stopped during maintenance and replacement, which affects the normal operation of the railway track, and the sensitivity will also increase the danger of operation.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An underground switch machine comprises: a box body, and a hydraulic power unit, a hydraulic cylinder, an action rod assembly and an indication rod assembly which are sequentially arranged in the box body along the length direction of the box body, a contact assembly arranged between the action rod assembly and the indication rod assembly, and a cylinder sleeve assembly fixedly mounted on the outer circle of the cylinder barrel of the hydraulic cylinder; the hydraulic power unit is connected to the hydraulic cylinder, and the hydraulic cylinder is arranged along the width direction of the box body so that its cylinder barrel can slide back and forth transversely along the width direction of the box body; the contact assembly comprises a contact seat, two groups of inspection indication rod groups sequentially arranged on the contact seat along the sliding direction of the cylinder barrel, and four groups of travel switches connected to the contact seat. Close; the inspection indicating rod group is arranged for longitudinal sliding along the sliding direction perpendicular to the cylinder barrel and is elastically connected to the contact seat, and four groups of travel switches are respectively arranged at both ends of the sliding direction of the two groups of inspection indicating rod groups, so that when the cylinder sleeve assembly slides into place along one side of the lateral direction, one group of inspection indicating rod groups abuts against the cylinder sleeve assembly and the other group of inspection indicating rod groups is disconnected from the cylinder sleeve assembly, so as to connect the two travel switches on the diagonal line and then simultaneously display the position status of the repelling point rail and the closely attached point rail, and at the same time, the inspection indicating rod group abutting against the cylinder sleeve assembly slides and extends out and is inserted into the corresponding inspection port on the indicating rod assembly to indicate the actual position of the action rod assembly.

[0007] Furthermore, the upper surface of the contact seat is concave to form two inner grooves that penetrate the contact seat longitudinally respectively, and the two groups of inspection indicating rod groups are slidably set in the two inner grooves, and the two ends of each inspection indicating rod group extend out of the corresponding inner grooves and are elastically connected to the contact seat; the contact assembly also includes two connecting plates, which are located above the two groups of inspection indicating rod groups and are detachably fixed to the contact seat by fasteners; four groups of travel switches are respectively arranged at the two ends of the two connecting plates, and part of the structure of the inspection indicating rod group is passed through the corresponding connecting plates for connection with the travel switch during the sliding process.

[0008] Furthermore, the cylinder sleeve assembly includes a cylinder sleeve fixedly mounted on the outer circle of the cylinder barrel, and an action plate fixedly connected to the cylinder sleeve, the outer side edge of the action plate close to the contact seat is concave to form a groove and two bosses at both ends of the groove; the inspection indicating rod group includes an inspection indicating rod arranged along its length direction, a baffle plate vertically connected to the inspection indicating rod, and two limit springs arranged on both sides of the inspection indicating rod; the inspection indicating rod is located in the corresponding inner groove, and the two ends extend out of the inner groove respectively to respectively abut against the bosses on the action plate and to be inserted into the inspection port on the indicating rod assembly; an opening is provided on the connecting plate, and the baffle plate extends out of the opening to be connected with one of the two groups of travel switches at both ends of the opening; the two ends of the limit spring are respectively connected to the contact seat and the inspection indicating rod to provide elastic force for the inspection indicating rod to extend and retract along its sliding direction.

[0009] Furthermore, the inspection indicating rod includes an inspection column and an indicating column arranged along its length direction, and a connecting pin connected therebetween; the inspection column is used to abut against the boss on the action plate, the indicating column is used to insert into the inspection port of the indicating rod assembly, and the baffle is vertically connected to the indicating column, and one end of the buffer spring is connected to the inspection column; the connecting pin is used to break when the indicating rod assembly is subjected to abnormal force, thereby protecting the contact assembly and the hydraulic cylinder.

[0010] Furthermore, the indicating rod assembly includes two indicating rod sections arranged in sequence along its length direction, and a fixing plate adjustably connecting the two indicating rod sections along the length direction, and the outer cylindrical surface of each indicating rod is also concavely processed to form an inspection port and an installation groove extending along the length direction; an inspection block is slidably installed in the installation groove and is limited in the installation groove by the fixing plate, and the inspection block is connected to a limit spring that is telescopically arranged along its sliding direction, and the other end of the limit spring is connected to a spring buckle fixed to the indicating rod, and the inspection block is used to align the inspection port under the action of the limit spring.

[0011] Furthermore, the cylinder sleeve assembly also includes a push plate fixedly mounted on the cylinder sleeve; the action plate is located above the push plate; the push plate is used to abut the action rod assembly when the cylinder sleeve slides with the cylinder barrel, so as to unlock, slide and lock the action rod assembly.

[0012] Furthermore, the action rod assembly includes an action rod, a rod sleeve installed on the outer circle of the action rod, and two locking blocks installed on the rod sleeve and rotated by two pin shafts; the surface on the push plate used to act with the locking block is an inclined surface; the contact assembly also includes a locking iron connected to one side of the contact seat, and the two sides of the two locking blocks respectively abut the inclined surface and the locking iron of the push plate, so that when the cylinder sleeve drives the push plate to slide, the push plate squeezes and pushes the locking block, so that the locking block is unlocked in turn under the action of the push plate and the locking iron, the locking block drives the action rod to slide, and the two locking blocks self-lock again to lock the action rod.

[0013] Furthermore, the actuating rod assembly also includes an extrusion component connected to the rod sleeve, which is used to make the rod sleeve slide off the actuating rod when the actuating rod is subjected to abnormal force, so as to protect the actuating rod assembly and the connected hydraulic cylinder and cylinder sleeve assembly.

[0014] Furthermore, the rod sleeve includes a rod sleeve body inserted on the outer circle of the action rod, and a mounting sleeve vertically connected to the rod sleeve body, and the outer circle of the action rod is vertically processed with an inwardly concave pin groove; the extrusion component includes an adjusting nut, an extrusion column, a disc spring group and an extrusion pin; the extrusion column is axially installed in the mounting sleeve, and the extrusion pin is installed between the pin groove and the column head of the extrusion column; the adjusting nut is sleeved on the outer circle of the extrusion column rod and is threadedly connected to the mounting sleeve; the disc spring group is axially sleeved on the outer circle of the extrusion column rod, and the two ends respectively press against the column head of the extrusion column and the adjusting nut.

[0015] Furthermore, the cylinder sleeve assembly also includes a pull shaft fixed to the cylinder sleeve; the underground switch machine also includes a manual mechanism for manually driving the cylinder sleeve assembly to slide, the manual mechanism includes: a shift fork connected to the pull shaft, a manual shaft with one end fixed to the shift fork and installed through the box body, a socket block fixed to the other end of the manual shaft, a plug rod for inserting into the socket block, and a detector connected to the box body; the detector is connected to the control system of the switch machine to cut off the power of the underground switch machine when the plug rod is inserted into the socket block.

[0016] The present invention has the following beneficial effects:

[0017] In the switch machine of the present invention, when the cylinder sleeve assembly slides into place along one lateral side (the situation is similar when it slides into place along the other lateral side), causing the action rod assembly to also slide into place, the two travel switches on the diagonal line in the contact assembly are both connected (when the cylinder sleeve assembly slides into place along the other lateral side, the two travel switches on the other diagonal line are respectively connected), thereby simultaneously displaying the position and status of the repelling point rail and the close contact point rail, with clear display and high accuracy, so as to better ensure the safety and normal operation of the train; on the other hand, compared with the conductive connection method of the joint in the prior art, the present invention adopts the method of checking and indicating that the rod group is in contact with the travel switch, which has a simple structure, good waterproof performance, high reaction sensitivity and long service life, so it does not need frequent maintenance and replacement, thereby reducing the labor intensity and maintenance cost of maintenance personnel, and does not need frequent parking for maintenance and replacement, which is not easy to affect the normal operation of the railway track, and the high sensitivity also increases the safety of train operation.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the spatial structure of an underground switch machine according to a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the spatial structure of the middle action rod assembly;

[0022] Figure 3 yes Figure 2 Disassembly diagram of

[0023] Figure 4 yes Figure 2 A schematic diagram of the cross-sectional front view of the middle extrusion component;

[0024] Figure 5 yes Figure 1 Schematic diagram of the spatial structure of the middle joint assembly;

[0025] Figure 6 yes Figure 5 Schematic diagram of the disassembly of the middle contact assembly;

[0026] Figure 7 yes Figure 6 The diagram of the spatial structure of the rod group is shown in the middle inspection;

[0027] Figure 8 yes Figure 6 Schematic diagram of the spatial structure of the middle contact seat;

[0028] Fig. 9 yes Figure 1 : A schematic diagram of the spatial structure of the rod assembly is shown in FIG.

[0029] Fig.10 yes Fig. 9 : The disassembled schematic diagram of the rod assembly is shown in FIG.

[0030] Fig.11 yes Figure 1 Schematic diagram of the spatial structure of the middle cylinder sleeve assembly;

[0031] Fig.12 yes Figure 1 Schematic diagram of the disassembly of the manual mechanism;

[0032] Fig.13 yes Figure 1 Schematic diagram of locking and switching of the middle action rod assembly.

[0033] Legend:

[0034] 1. Box; 2. Hydraulic power unit; 3. Hydraulic cylinder;

[0035] 4. Action rod assembly; 41. Action rod; 411. Pin groove; 42. Rod sleeve; 43. Lock block; 44. Extrusion member; 441. Adjustment nut; 442. Extrusion column; 443. Disc spring assembly; 444. Extrusion pin; 45. Pin shaft;

[0036] 5. Contact assembly; 51. Indicator column; 52. Baffle; 53. Inspection column; 54. Buffer spring; 55. Locking iron; 56. Travel switch; 57. Contact seat; 571. Inner groove; 58. Connecting pin; 59. Connecting plate;

[0037] 6. Indicator rod assembly; 61. Indicator rod; 611. Inspection port; 613. Mounting slot; 62. Fixing plate; 63. Inspection block; 64. Spring buckle; 65. Limit spring;

[0038] 7. Manual mechanism; 71. Fork; 72. Manual shaft; 73. Jack block; 74. Detector; 75. Rod;

[0039] 8. Cylinder sleeve assembly; 81. Cylinder sleeve; 82. Push plate; 83. Action plate; 831. Boss; 832. Groove; 84. Pull shaft. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0041] Reference Figure 1 , Figure 5-6 The preferred embodiment of the present invention provides an underground switch machine, comprising: a box body 1, and a hydraulic power unit 2, a hydraulic cylinder 3, an action rod assembly 4 and an indication rod assembly 6 sequentially arranged in the box body 1 along the length direction of the box body 1, a contact assembly 5 arranged between the action rod assembly 4 and the indication rod assembly 6, and a cylinder sleeve assembly 8 fixedly mounted on the outer circle of the cylinder barrel of the hydraulic cylinder 3. The hydraulic power unit 2 is connected to the hydraulic cylinder 3, and the hydraulic cylinder 3 is arranged along the width direction of the box body 1 so that its cylinder barrel can slide back and forth laterally along the width direction of the box body 1. The contact assembly 5 includes a contact seat 57, two groups of inspection indication rod groups sequentially arranged on the contact seat 57 along the sliding direction of the cylinder barrel, and four groups of travel switches 56 connected to the contact seat 57. The inspection indicating rod group is arranged to slide longitudinally along the sliding direction perpendicular to the sliding direction of the cylinder barrel and is elastically connected to the contact seat 57. Four groups of travel switches 56 are respectively arranged at both ends of the sliding direction of the two groups of inspection indicating rod groups, so that when the cylinder sleeve assembly 8 slides into place along one side horizontally, one group of the inspection indicating rod groups abuts the cylinder sleeve assembly 8 while the other group of the inspection indicating rod group is disconnected from the cylinder sleeve assembly 8, so as to connect the two travel switches 56 on the diagonal line and thereby simultaneously display the position states of the repelling point rail and the closely attached point rail. At the same time, the inspection indicating rod group abutting the cylinder sleeve assembly 8 slides and then extends out and is inserted into the corresponding inspection port 611 on the indicating rod assembly 6, so as to indicate the actual position of the action rod assembly 4.

[0042] When the underground switch machine of the present invention is working, first, the hydraulic power unit 2 is started to drive the hydraulic cylinder 3 to move. When the hydraulic cylinder 3 moves, the cylinder barrel thereof slides back and forth on the piston rod, and then the cylinder barrel drives the cylinder sleeve assembly 8 mounted thereon to reciprocate along the lateral width direction of the box body 1, and then through the interaction between the cylinder sleeve assembly 8 and the actuating rod assembly 4, the actuating rod assembly 4 also reciprocates in the lateral direction, and then through the reciprocating motion of the actuating rod assembly 4, the switch point rail is pulled to switch, and the direction of the switch opening is changed; when the actuating rod assembly 4 moves horizontally to the accurate position with the cylinder sleeve assembly 8, at this time, just one of the inspection rod groups in the contact assembly 5 abuts against the cylinder sleeve assembly 8, so as to slide under the action of the cylinder sleeve assembly 8 and then connect a stroke at the corresponding position thereof Switch 56, while at the same time another set of inspection indicating rod group is not in contact with the cylinder sleeve assembly 8, that is, the inspection indicating rod group is connected with another travel switch 56 at the corresponding position under the action of the elastic force, so that when the cylinder sleeve assembly 8 slides into place along one lateral side, that is, when the actuating rod assembly 4 slides into place along one lateral side, the two travel switches 56 on the diagonal line in the contact assembly 5 are both connected to indicate the position and state of the actuating rod assembly 4; at the same time, when the actuating rod assembly 4 slides into place along one lateral side, the indicating rod assembly 6 pulled by the switch point rail also slides into place along one lateral side, so that the inspection indicating rod group that slides in contact with the cylinder sleeve assembly 8 is also inserted into the corresponding inspection port 611 on the indicating rod assembly 6, so that the indicating rod assembly 6 reflects the actual position of the switch.

[0043] In the switch machine of the present invention, when the cylinder sleeve assembly 8 slides into place along one lateral side (the situation is similar when it slides into place along the other lateral side), causing the action rod assembly 4 to also slide into place, the two travel switches 56 on the diagonal line in the contact assembly 5 are both turned on (when the cylinder sleeve assembly 8 slides into place along the other lateral side, the two travel switches 56 on the other diagonal line are respectively turned on), thereby simultaneously displaying the position and state of the repelling point rail and the close contact point rail, with clear display and high accuracy, so as to better ensure the safety and normal operation of the train; on the other hand, compared with the mechanical contact structure in the prior art, the present invention adopts the inspection indicating rod group and the travel switch 56 to be in contact and conductive, which has a simple structure, good waterproof performance, the switch is not polluted by the environment, has high reaction sensitivity and long service life, so it does not need frequent maintenance and replacement, thereby reducing the labor intensity and maintenance cost of maintenance personnel, and does not need frequent parking for maintenance and replacement, which is not easy to affect the normal operation of the railway track, and the high sensitivity also increases the safety of train operation.

[0044] Alternatively, if Figure 5-8 As shown, the upper surface of the contact seat 57 is concave to form two inner grooves 571 that penetrate the contact seat 57 in the longitudinal direction, and the two groups of inspection indicating rod groups are respectively slidably arranged in the two inner grooves 571, and the two ends of each inspection indicating rod group extend out of the corresponding inner grooves 571 and are elastically connected to the contact seat 57. The contact assembly 5 also includes two connecting plates 59, which are located above the two groups of inspection indicating rod groups and are detachably fixed to the contact seat 57 by fasteners. Four groups of travel switches 56 are respectively arranged at the two ends of the two connecting plates 59, and part of the structure of the inspection indicating rod group is passed through the corresponding connecting plates 59 to connect with the travel switch 56 during the sliding process. In this optional solution, an inner groove 571 for slidingly installing the inspection indicating rod group is formed by concave processing on the upper surface of the contact seat 57. On the one hand, the sliding of the inspection indicating rod group is limited and guided by the inner groove 571 to improve the accuracy of the sliding of the inspection indicating rod group, thereby improving the accuracy of the position and status display of the repelling point rail and the close contact point rail; on the other hand, it is convenient to install the two groups of travel switches 56 at both ends of the sliding of the inspection indicating rod group through the connecting plate 59 to avoid interference with the installation and sliding movement of the inspection indicating rod group.

[0045] In this option, if Fig.11As shown, the cylinder sleeve assembly 8 includes a cylinder sleeve 81 fixedly mounted on the outer circle of the cylinder barrel, and an action plate 83 fixedly connected to the cylinder sleeve 81. The outer side of the action plate 83 near the contact seat 57 is concave to form a groove 832 and two bosses 831 located at both ends of the groove 832. The inspection indicating rod group includes an inspection indicating rod arranged along its length direction, a baffle 52 vertically connected to the inspection indicating rod, and two limit springs 65 arranged on both sides of the inspection indicating rod. The inspection indicating rod is located in the corresponding inner groove 571, and the two ends extend out of the inner groove 571 respectively to respectively abut against the boss 831 on the action plate 83 and to be inserted into the inspection port 611 on the indicating rod assembly 6. An opening is provided on the connecting plate 59, and the baffle 52 extends out of the opening to connect with one of the two groups of travel switches 56 at both ends of the opening. The two ends of the limit spring 65 are respectively connected to the contact seat 57 and the inspection indicating rod to provide elastic force for the inspection indicating rod to expand and contract along its sliding direction. In this optional solution, the provision of two limit springs 65, on the one hand, limits and guides the sliding of the inspection indicating rod, and on the other hand, enhances the elastic force acting on the inspection indicating rod, so that when the end of the inspection indicating rod is located in the groove 832, the baffle 52 can quickly connect a travel switch 56, so that the two travel switches 56 on the diagonal line are connected.

[0046] During operation, when the cylinder sleeve 81 drives the action plate 83 to move to the end of the stroke, one end of the inspection indicating rod in the contact assembly 5 moves along the action plate 83, transitioning from the groove 832 on the action plate 83 to the boss 831, and the inspection indicating rod slides to trigger the travel switch 56, while the other group of inspection indicating rods is located in the groove 832. At this time, under the action of the limit springs 65 on both sides, it extends out and contacts the travel switch 56 at the corresponding position to trigger, so that the two diagonal travel switches 56 are triggered respectively, and the external equipment or control system detects the triggering state to determine the position and state of the turnout; at the same time, the inspection indicating rod abutting against the boss 831 also slides and inserts into the inspection port 611 of the indicating rod assembly 6, indicating that the action rod assembly 4 has moved to the correct position, the action rod assembly 4 stops moving, and the operation of the switch machine is completed; on the contrary, when the connection state of the four groups of travel switches 56 is not diagonally connected, the position and state information of the turnout can also be displayed according to the connection state of the four groups of travel switches 56.

[0047] Preferably, if Figure 7As shown, the inspection indicating rod includes an inspection column 53 and an indicating column 51 arranged along its length direction, and a connecting pin 58 connected therebetween. The inspection column 53 is used to abut against the boss 831 on the action plate 83, the indicating column 51 is used to be inserted into the inspection port 611 of the indicating rod assembly 6, and the baffle 52 is vertically connected to the indicating column 51, and one end of the buffer spring 54 is connected to the inspection column 53. The connecting pin 58 is used to break when the indicating rod assembly 6 is subjected to an abnormal force, thereby protecting the contact assembly 5 and the hydraulic cylinder 3. During operation, when the action rod assembly 4 drives the turnout point rail to move incorrectly, resulting in abnormal train travel, the inspection indicating rod is squeezed hard and subjected to a large force. In this preferred solution, the inspection indicating rod includes the inspection column 53 and the indicating column 51 connected as a whole by the connecting pin 58, so that when the inspection indicating rod is subjected to a large force, the connecting pin 58 is squeezed and sheared off, so that the baffle 52 triggers the travel switch 56 to play an alarm prompting role, and at the same time, the inspection indicating rod breaks to release the force, thereby avoiding damage to the contact assembly 5.

[0048] In this optional scheme, compared with the contact assembly in the prior art, the overall structure of the contact assembly 5 of the present invention is simple to set up and easy to process and prepare, which reduces the preparation cost. Therefore, the underground switch machine of the present invention has a simple structural design and is easy to operate. The operating efficiency of the entire equipment is also higher, which is convenient for road traffic use. The two sets of travel switches 56 on the diagonal are connected to simultaneously display the position and status of the repelling point rail and the close contact point rail, and the display is clear and accurate, so as to better ensure the safety and normal operation of the train. In addition, the baffle 52 is connected to the travel switch 56, which has a simple structure, good waterproof performance, high response sensitivity, and long service life. It does not require frequent maintenance and replacement, which reduces the labor intensity and maintenance cost of maintenance personnel, and does not require frequent parking for maintenance and replacement, which is not easy to affect the normal operation of the railway track, and the high sensitivity also increases the safety of train operation.

[0049] Alternatively, if Fig. 9 As shown, the indicating rod assembly 6 includes two sections of indicating rods 61 arranged in sequence along its length direction, and a fixing plate 62 that adjustably connects the two sections of indicating rods 61 along the length direction, and the outer circumferential surface of each indicating rod 61 is also concavely processed to form an inspection port 611 and a mounting groove 613 extending along the length direction. When the operating rod assembly 4 reciprocates, it pulls the switch point rail at the same time, thereby changing the direction of the switch opening. When the switch point rail is converted, the switch point rail will drive the indicating rod assembly 6 to reciprocate. When the operating rod assembly 4 moves to the corresponding position and is locked, the indicating rod 61 also moves to the corresponding position. At this time, the indicating column 51 corresponding to the corresponding inspection port 611 falls into the inspection port 611, so that the indicating column 51 is engaged with the indicating rod assembly 6, thereby, the indicating rod assembly 6 can reflect the actual position of the switch. In this optional scheme, the indicating rod assembly 6 is an integrated structure, and the distance between the two inspection ports 611 thereon is adjustable to adapt to different switches.

[0050] Furthermore, if Fig.10 As shown, an inspection block 63 is slidably installed in the installation groove 613 and is limited in the installation groove 613 by a fixed plate 62. The inspection block 63 is connected to a limit spring 65 which is telescopically arranged along its sliding direction. The other end of the limit spring 65 is connected to a spring buckle 64 fixed to the indicating rod 61. The inspection block 63 is used to align the inspection port 611 under the action of the limit spring 65.

[0051] Alternatively, if Figure 1 As shown, the hydraulic power unit 2 is located on the fixed seat of the box body 1, and the hydraulic power unit 2 and the hydraulic cylinder 3 are connected by a connecting pipe. In specific implementation, the function of the hydraulic power unit 2 is to convert electrical energy into hydraulic energy, and the two ends of the piston rod of the hydraulic cylinder 3 are respectively fixed to the box body 1. When the hydraulic oil enters the hydraulic cylinder 3, the piston rod drives the cylinder barrel to reciprocate relative to the piston rod to convert the hydraulic energy into mechanical energy, drive the cylinder sleeve assembly 8 to move, and then drive the action rod assembly 4, the contact assembly 5 and the indicating rod assembly 6 to work together to realize the normal operation of the switch machine and ensure the safe operation of the train.

[0052] Alternatively, if Figure 1 , Fig.11 As shown, the cylinder sleeve assembly 8 also includes a push plate 82 fixedly mounted on the cylinder sleeve 81. The action plate 83 is located above the push plate 82. The push plate 82 is used to abut the action rod assembly 4 during the sliding process of the cylinder sleeve 81 with the cylinder barrel, so as to unlock, slide and lock the action rod assembly 4. When the cylinder barrel reciprocates, the cylinder sleeve 81 sleeved on the cylinder barrel moves synchronously. When the cylinder sleeve 81 moves synchronously with the cylinder barrel, the push plate 82 installed on the cylinder sleeve 81 also moves with the cylinder sleeve 81, thereby driving the action rod assembly 4 abutting against the push plate 82 to reciprocate along the length direction of the action rod assembly 4. Therefore, through the reciprocating motion of the action rod assembly 4, the switch can be driven to change its position state to guide the train to travel.

[0053] In specific implementation, when the action rod assembly 4 moves to the correct position, that is, when the turnout is switched to the correct position state, the contact assembly 5 between the action rod assembly 4 and the indicating rod assembly 6 will be connected, so that the external device or control system can detect the position and state of the action rod assembly 4 to ensure the safety and normal operation of the train. At the same time, the indicating rod assembly 6 and the contact assembly 5 will be engaged, so that the indicating rod assembly 6 can reflect the actual position of the turnout. Through the coordinated operation of the hydraulic cylinder 3, the cylinder sleeve assembly 8, the action rod assembly 4, the contact assembly 5 and the indicating rod assembly 6, the switch of the turnout is completed to ensure the safe operation of the train.

[0054] Alternatively, if Figure 2-3As shown, the action rod assembly 4 includes an action rod 41, a rod sleeve 42 mounted on the outer circle of the action rod 41, and two locking blocks 43 respectively mounted on the rod sleeve 42 by two pin shafts 45. The surface on the push plate 82 for acting with the locking block 43 is an inclined surface. The contact assembly 5 also includes a locking iron 55 connected to one side of the contact seat 57, and the two sides of the two locking blocks 43 respectively abut the inclined surface of the push plate 82 and the locking iron 55, so that when the cylinder sleeve 81 drives the push plate 82 to slide, the push plate 82 squeezes and pushes the locking block 43, so that the locking block 43 is unlocked in sequence under the action of the push plate 82 and the locking iron 55, the locking block 43 drives the action rod 41 to slide, and the two locking blocks 43 are self-locked again to lock the action rod 41.

[0055] When performing specific actions, such as Fig.13 As shown, the positioning locking state: the hydraulic cylinder 3 moves to the right and drives the push plate 82 on the cylinder sleeve assembly 8 to move to the right, and begins to unlock. During the unlocking process, the push plate 82 moves 17mm and begins to contact the right lock block 43; when the push plate 82 moves to the right and completes the unlocking stroke, the positioning and anti-position lock blocks 43 are in the gap between the locking iron 55 and the push plate 82, and the push plate 82 moves a total of about 24mm; when the hydraulic cylinder 3 continues to move to the right, the anti-position lock block 43 is pushed by the push plate 82 to drive the action rod 41 Move, when the action rod 41 continues to move to the locking surface of the anti-position lock block 43 and the locking iron 55 is about to act, the locking process begins; the hydraulic cylinder 3 continues to move to the right to push the anti-position lock block 43 into the anti-position locking surface of the locking iron 55, and the lock block 43 rotates 14° at this time; the hydraulic cylinder 3 continues to move to the right, the action rod 41 does not move, the push plate 82 enters the locking surface, and enters the locked state. The push plate 82 moves a total of 104mm (hydraulic cylinder stroke), and the lock block 43 moves 70mm (action rod stroke).

[0056] Furthermore, if Figure 3 and Figure 4 As shown, the actuating rod assembly 4 also includes an extrusion member 44 connected to the rod sleeve 42. The extrusion member 44 is used to make the rod sleeve 42 slide off the actuating rod 41 when the actuating rod 41 is subjected to abnormal force, so as to protect the actuating rod assembly 4 and the connected hydraulic cylinder 3 and cylinder sleeve assembly 8.

[0057] In a specific embodiment of a further embodiment of the present invention, Figure 4As shown, the rod sleeve 42 includes a rod sleeve body that is inserted into the outer circle of the action rod 41, and a mounting sleeve that is vertically connected to the rod sleeve body. The outer circle of the action rod 41 is vertically processed with a concave pin groove 411. The extrusion component 44 includes an adjusting nut 441, an extrusion column 442, a disc spring group 443 and an extrusion pin 444. The extrusion column 442 is axially installed in the mounting sleeve, and the extrusion pin 444 is installed between the pin groove 411 and the column head of the extrusion column 442. The adjusting nut 441 is sleeved on the outer circle of the column rod of the extrusion column 442 and is threadedly connected to the mounting sleeve. The disc spring group 443 is axially sleeved on the outer circle of the column rod of the extrusion column 442, and the two ends respectively press against the column head of the extrusion column 442 and the adjusting nut 441. In this specific embodiment, the adjustment nut 441 is screwed into the installation sleeve to adjust the expansion and contraction of the disc spring group 443 to change the extrusion force, that is, to change the elastic force applied by the disc spring group 443 to the extrusion column 442, that is, to change the force between the head of the extrusion column 442 and the operating rod 41, that is, the force applied to the extrusion pin 444. During operation, when the operating rod assembly 4 drives the switch point rail to move incorrectly, resulting in abnormal train travel, the operating rod 41 is squeezed hard and subjected to a large force. In this solution, the extrusion member 44 is provided to limit the connection between the rod sleeve 42 and the operating rod 41 through the extrusion pin 444. When the operating rod 41 is subjected to a large force, the extrusion pin 444 causes the operating rod 41 to be disconnected from the rod sleeve 42, thereby avoiding damage to the entire operating rod assembly 4, the hydraulic cylinder 3 and the cylinder sleeve assembly 8.

[0058] Alternatively, if Figure 1 , Fig.12 As shown, the cylinder sleeve assembly 8 also includes a pull shaft 84 fixed to the cylinder sleeve 81. The underground switch machine also includes a manual mechanism 7 for manually driving the cylinder sleeve assembly 8 to slide, and the manual mechanism 7 includes: a shift fork 71 connected to the pull shaft 84, a manual shaft 72 fixed to the shift fork at one end and installed through the housing 1, a socket block 73 fixed to the other end of the manual shaft 72, a plug rod 75 for inserting into the socket block 73, and a detector 74 connected to the housing 1. The detector 74 is connected to the control system of the switch machine to cut off the power supply of the underground switch machine when the plug rod 75 is inserted into the socket block 73.

[0059] During operation, when the switch machine is under maintenance or fails, the staff needs to manually operate the switch machine to make the switch machine operate normally. Therefore, a manual mechanism 7 is rotatably connected to the side wall of the box body 1, and the manual mechanism 7 is rotatably connected to the pull shaft 84 installed on the cylinder sleeve 81. That is to say, the staff controls the manual mechanism 7 to realize the reciprocating motion of the cylinder sleeve assembly 8, and then drives the action rod assembly 4 to operate normally, so as to drive the turnout to normally change its position state and ensure the normal operation of railway transportation.

[0060] In specific implementation, the manual shaft 72 with the jack block 73 is located outside the box body 1. First, the staff inserts the plug rod 75 into the jack block 73. When the plug rod 75 is inserted into the jack block 73, the switch machine is powered off and protected. Then, the plug rod 75 is forced to drive the manual shaft 72 to rotate, thereby driving the fork 71 connected to the manual shaft 72 to rotate, and the end of the fork 71 away from the manual shaft 72 is rotatably connected to the pull shaft 84. With such a design, when the fork 71 rotates, the pull shaft 84 will move along the length direction of the piston rod, thereby driving the cylinder sleeve 81 sleeved on the cylinder barrel to move, so that when the switch machine is overhauled or fails, the staff can manually operate the manual mechanism 7 to make the switch machine operate normally. In this application, the manual mechanism 7 has a simple structure, a simple action process, is easy to process and prepare, has high action accuracy, and saves time and effort during operation.

[0061] In summary, the underground switch machine provided by the present invention application is configured by arranging a hydraulic cylinder 3 in a box body 1, so that the cylinder barrel of the hydraulic cylinder 3 drives the cylinder sleeve 81 mounted on the cylinder barrel to reciprocate along the length direction of the piston rod, and then the push plate 82 installed on the cylinder sleeve 81 pushes the actuating rod assembly 4 to reciprocate, and the reciprocating motion of the actuating rod assembly 4 pulls the switch point rail to switch, thereby changing the opening direction of the switch; the contact assembly 5 is installed in the box body 1, and when the actuating rod assembly 4 moves to the accurate position, the two travel switches 56 on the diagonal line of the contact assembly 5 between the actuating rod assembly 4 and the indicating rod assembly 6 are turned on to indicate the position and state of the actuating rod assembly 4, and at the same time, the indicating rod assembly 6 and the contact assembly 5 are engaged to enable the indicating rod assembly 6 to reflect the actual position of the switch.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underground switch machine, characterized in that: include: A housing (1), and a hydraulic power unit (2), a hydraulic cylinder (3), an actuating rod assembly (4) and an indicating rod assembly (6) arranged in sequence in the housing (1) along the length direction of the housing (1), a contact assembly (5) arranged between the actuating rod assembly (4) and the indicating rod assembly (6), and a cylinder sleeve assembly (8) fixedly mounted on the outer circle of the cylinder barrel of the hydraulic cylinder (3); The hydraulic power unit (2) is connected to the hydraulic cylinder (3), and the hydraulic cylinder (3) is arranged along the width direction of the box body (1) so that the cylinder barrel thereof can slide back and forth in the transverse direction of the width direction of the box body (1); The contact assembly (5) comprises a contact seat (57), two groups of inspection indicating rods arranged on the contact seat (57) in sequence along the sliding direction of the cylinder, and four groups of travel switches (56) connected to the contact seat (57); The inspection indicating rod group is arranged to slide longitudinally along the sliding direction of the vertical cylinder barrel and is elastically connected to the contact seat (57). Four groups of travel switches (56) are arranged at both ends of the sliding direction of the two groups of inspection indicating rod groups. When the cylinder sleeve assembly (8) slides into place along one side in the lateral direction, one group of the inspection indicating rod group abuts against the cylinder sleeve assembly (8) while the other group of the inspection indicating rod group is disconnected from the cylinder sleeve assembly (8) to connect the two travel switches (56) on the diagonal line and thus simultaneously display the position states of the point rail being repelled and the point rail being closely attached. At the same time, the inspection indicating rod group abutting against the cylinder sleeve assembly (8) slides and then extends out to be inserted into the corresponding inspection port (611) on the indicating rod assembly (6) to indicate the actual position of the action rod assembly (4).

2. The underground switch machine according to claim 1, characterized in that: The upper surface of the contact seat (57) is concave to form two inner grooves (571) that respectively penetrate the contact seat (57) in the longitudinal direction. The two groups of inspection indicating rod groups are respectively slidably arranged in the two inner grooves (571), and the two ends of each inspection indicating rod group respectively extend out of the corresponding inner groove (571) and are elastically connected to the contact seat (57); The contact assembly (5) further comprises two connecting plates (59), which are located above the two groups of inspection indicating rods and are detachably fixed to the contact seat (57) via fasteners; Four groups of travel switches (56) are arranged at both ends of two connecting plates (59), and a part of the structure of the inspection indicating rod group is passed through the corresponding connecting plates (59) to be connected with the travel switches (56) during the sliding process.

3. The underground switch machine according to claim 2, characterized in that: The cylinder sleeve assembly (8) comprises a cylinder sleeve (81) fixedly mounted on the outer circle of the cylinder barrel, and an action plate (83) fixedly connected to the cylinder sleeve (81), wherein the outer side edge of the action plate (83) close to the contact seat (57) is concave to form a groove (832) and two bosses (831) located at both ends of the groove (832); The inspection indicating rod assembly comprises an inspection indicating rod arranged along the length direction thereof, a baffle (52) vertically connected to the inspection indicating rod, and two limit springs (65) arranged on both sides of the inspection indicating rod; The inspection indicating rod is located in the corresponding inner groove (571), and both ends extend out of the inner groove (571) to respectively abut against the boss (831) on the action plate (83) and to be inserted into the inspection port (611) on the indicating rod assembly (6); The connecting plate (59) is provided with an opening extending therethrough, and the baffle (52) extends out of the opening to be connected to one of the two sets of travel switches (56) at both ends of the opening; The two ends of the limit spring (65) are respectively connected to the contact seat (57) and the inspection indicating rod to provide elastic force for the inspection indicating rod to expand and contract along its sliding direction.

4. The underground switch machine according to claim 3, characterized in that: The inspection and indication rod comprises an inspection column (53) and an indication column (51) arranged along the length direction thereof, and a connecting pin (58) connected therebetween; The inspection column (53) is used to abut against the boss (831) on the action plate (83), the indication column (51) is used to be inserted into the inspection port (611) of the indication rod assembly (6), and the baffle (52) is vertically connected to the indication column (51), and one end of the buffer spring (54) is connected to the inspection column (53); The connecting pin (58) is used to break when the rod assembly (6) is subjected to an abnormal force, thereby protecting the contact assembly (5) and the hydraulic cylinder (3).

5. The underground switch machine according to claim 1, characterized in that: The indicating rod assembly (6) comprises two indicating rods (61) arranged in sequence along the length direction thereof, and a fixing plate (62) adjustably connecting the two indicating rods (61) along the length direction, and the outer circumferential surface of each indicating rod (61) is also concavely processed to form an inspection port (611) and a mounting groove (613) extending along the length direction; An inspection block (63) is slidably mounted in the installation groove (613) and is limited in the installation groove (613) by a fixing plate (62). The inspection block (63) is connected to a limit spring (65) which is telescopically arranged along the sliding direction thereof. The other end of the limit spring (65) is connected to a spring buckle (64) fixed to the indicating rod (61). The inspection block (63) is used to align the inspection port (611) under the action of the limit spring (65).

6. The underground switch machine according to claim 3, characterized in that: The cylinder sleeve assembly (8) also includes a push plate (82) fixedly mounted on the cylinder sleeve (81); The action plate (83) is located above the push plate (82); The push plate (82) is used to abut against the actuating rod assembly (4) during the sliding process of the cylinder sleeve (81) along with the cylinder barrel, so as to enable the actuating rod assembly (4) to be unlocked, slid and locked.

7. The underground switch machine according to claim 6, characterized in that: The action rod assembly (4) comprises an action rod (41), a rod sleeve (42) mounted on the outer circle of the action rod (41), and two locking blocks (43) respectively mounted on the rod sleeve (42) and rotatable via two pins (45); The surface of the push plate (82) for interacting with the locking block (43) is an inclined surface; The contact assembly (5) also includes a locking iron (55) connected to one side of the contact seat (57), and the two sides of the two locking blocks (43) respectively abut against the inclined surface of the push plate (82) and the locking iron (55), so that when the cylinder sleeve (81) drives the push plate (82) to slide, the push plate (82) squeezes and pushes the locking block (43), so that the locking block (43) is unlocked in sequence under the action of the push plate (82) and the locking iron (55), the locking block (43) drives the action rod (41) to slide, and the two locking blocks (43) are self-locked again to lock the action rod (41).

8. The underground switch machine according to claim 7, characterized in that: The actuating rod assembly (4) further comprises a disengaging member (44) connected to the rod sleeve (42), wherein the disengaging member (44) is used to make the rod sleeve (42) slip off the actuating rod (41) when the actuating rod (41) is subjected to an abnormal force, so as to protect the actuating rod assembly (4) and the connected hydraulic cylinder (3) and cylinder sleeve assembly (8).

9. The underground switch machine according to claim 8, characterized in that: The rod sleeve (42) comprises a rod sleeve body which is inserted into the outer circle of the action rod (41) and a mounting sleeve which is vertically connected to the rod sleeve body. An inwardly concave pin groove (411) is vertically processed on the outer circle of the action rod (41); The extrusion component (44) comprises an adjusting nut (441), an extrusion column (442), a disc spring assembly (443) and an extrusion pin (444); The extrusion column (442) is axially installed in the installation sleeve, and the extrusion pin (444) is installed between the pin groove (411) and the column head of the extrusion column (442); The adjusting nut (441) is sleeved on the outer circle of the extrusion column (442) and is threadedly connected with the mounting sleeve; The disc spring assembly (443) is sleeved on the outer circle of the column rod of the extrusion column (442) along the axial direction, and the two ends thereof respectively press against the column head of the extrusion column (442) and the adjusting nut (441).

10. The underground switch machine according to claim 3, characterized in that: The cylinder sleeve assembly (8) also includes a wrench shaft (84) fixed to the cylinder sleeve (81); The underground switch machine further comprises a manual mechanism (7) for manually driving the cylinder sleeve assembly (8) to slide, and the manual mechanism (7) comprises: A shift fork (71) connected to the pull shaft (84), a manual shaft (72) having one end fixed to the shift fork and passing through the housing (1) for installation, a socket block (73) fixed to the other end of the manual shaft (72), an insertion rod (75) for inserting into the socket block (73), and a detector (74) connected to the housing (1); The detector (74) is connected to the control system of the switch machine so as to cut off the power supply of the underground switch machine when the insertion rod (75) is inserted into the socket block (73).

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