Locking monitoring device
Patent Information
- Application Number
- PCT/CN2025/129295
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-18
- Filing Date
- 2025-10-22
- Publication Date
- 2026-08-27
Smart Images
Figure CN2025129295_27082026_PF_FP_ABST
Abstract
Description
A locking monitoring device Technical Field
[0001] This invention belongs to the field of rail transit technology, and specifically relates to a locking monitoring device. Background Technology
[0002] A turnout switching device is a mechanical device that uses a switch machine to switch and lock the switch rail with the stock rail, frog rail, and wing rail.
[0003] The function of turnout switching equipment is to switch and lock turnouts, and to monitor and inspect their position. Turnout switching monitoring equipment monitors and tests changes in the mechanical and electrical parameters of the turnout switching equipment, providing a reliable basis for turnout maintenance and ensuring that the turnout is in good operational condition. Therefore, ensuring the locking status of the turnout's external lock is a crucial monitoring point for guaranteeing its proper operation.
[0004] The switch machine switches the turnout by pushing / pulling the external locking mechanism. After the turnout is switched into position, the switch machine drives the external locking mechanism to continue operating. The stroke of this operation is the locking amount. In the existing technology, the locking amount is used to ensure that the external locking device successfully locks the turnout. This method is more suitable for configuration-type external locking mechanisms. However, this method has the following problems when used for sealed-type external locking mechanisms:
[0005] First, the locking amount of a sealed external locking system cannot be directly observed; second, from a fault-oriented safety perspective, judging the locking amount of a sealed external locking system may lead to misjudgment of the locking result. Summary of the Invention
[0006] To address the above problems, the present invention provides a locking monitoring device, which adopts the following technical solution:
[0007] A locking monitoring device includes a locking cylinder, a locking sleeve, a locking rod, a locking assembly, and a contact sensor;
[0008] The locking sleeve is fitted over the outside of the locking rod, and the locking rod can slide axially within the locking sleeve. The locking cylinder is fitted over the outside of the locking sleeve, and the locking assembly is movably mounted on the locking sleeve. The locking rod drives the locking sleeve to slide axially along the locking cylinder through the locking assembly. The inner wall of the locking cylinder is provided with a limiting groove in the circumferential direction. The locking cylinder is provided with a contact sensor at the position of the limiting groove. When the locking assembly is located within the limiting groove, the contact sensor is activated, and the locking sleeve is in a relatively locked state relative to the locking cylinder.
[0009] Furthermore, the locking assembly includes a first locking block and a second locking block;
[0010] The first locking block and the second locking block are spaced apart along the axial direction of the locking sleeve. The locking rod drives the locking sleeve to slide in a first direction through the first locking block. The locking rod drives the locking sleeve to slide in a second direction of the locking cylinder through the second locking block. The limiting groove is provided at one end of the locking cylinder near the second locking block. The first direction and the second direction are opposite.
[0011] Furthermore, the locking monitoring device also includes an insulating bolt, and the contact sensor is detachably connected to the locking cylinder via the insulating bolt.
[0012] Furthermore, the locking cylinder is provided with an internal threaded hole at the position of the limiting groove. The internal threaded hole extends from the outer side of the locking cylinder to the limiting groove. The insulating bolt includes a head and a threaded part that are connected to each other. The threaded part is provided with an external thread in the circumferential direction. The external thread of the threaded part is threadedly connected to the internal threaded hole. A through mounting hole is provided between the head and the threaded part. The contact sensor is fixedly installed in the mounting hole.
[0013] Furthermore, multiple internal threaded holes are provided along the circumference of the locking cylinder.
[0014] Furthermore, the locking cylinder is provided with a mounting surface at each of the internal threaded hole positions.
[0015] Furthermore, multiple contact sensors are provided, and the included angle between the center lines of the multiple contact sensors is determined according to the shape of the second locking block and the included angle between the multiple second locking blocks, so that when the radial position of the second locking block moving into the limiting groove changes, one or more contact sensors can still be triggered to turn on.
[0016] Furthermore, two contact sensors are provided, and the included angle A between the center lines of the two contact sensors is 35° to 55° or 125° to 145°. Eight internal threaded holes and eight mounting planes are evenly distributed along the circumference of the locking cylinder. The two contact sensors are installed in two adjacent internal threaded holes by means of insulating bolts.
[0017] Furthermore, the first locking block and the second locking block have the same structure, and the first locking block and the second locking block are configured as a fan shape, with the four first locking blocks and the four second locking blocks evenly distributed along the circumference of the locking rod.
[0018] Furthermore, the sidewall of the locking sleeve is provided with a first through hole and a second through hole in a radial direction. The first through hole and the second through hole are spaced apart along the axial direction of the locking sleeve. The first locking block is slidably disposed in the first through hole, and the second locking block is slidably disposed in the second through hole. The outer sidewall of the locking rod is provided with an annular first sliding groove and a second sliding groove in a circumferential direction. The first sliding groove and the second sliding groove are spaced apart along the axial direction of the locking rod. The bottom end of the first locking block can slide in the first sliding groove, and the bottom end of the second locking block can slide in the second sliding groove.
[0019] Furthermore, a connecting ring is provided on the outer wall of the locking cylinder, and a connecting part is provided at one end of the locking rod near the second locking block.
[0020] The beneficial effects of this invention are:
[0021] 1. The locking monitoring device of this invention sets a limiting groove and a contact sensor on the locking cylinder. When the locking component is located in the limiting groove, the locking sleeve is in a relatively locked state relative to the locking cylinder. The contact sensor is triggered to connect and transmit data to the external system, which can confirm that the turnout is successfully locked and avoid misjudgment of the locking result.
[0022] 2. In this embodiment of the invention, the contact sensor is fixed to the locking cylinder by an insulating bolt, and the insulating bolt forms insulation between the contact sensor and the locking cylinder, which is used for insulation scenarios such as lightning protection.
[0023] 3. In this embodiment of the invention, the included angle between the center lines of the multiple contact sensors is determined according to the shape of the second locking block and the included angle between the multiple second locking blocks. The second locking block can be successfully monitored even when passively rotated to any position, thus avoiding monitoring blind spots.
[0024] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 shows an isometric view of a locking monitoring device according to an embodiment of the present invention;
[0027] Figure 2 shows a schematic diagram of the installation of the locking rod, the first locking block, and the second locking block according to an embodiment of the present invention;
[0028] Figure 3 shows a schematic diagram of the locking monitoring device when the turnout is in an unlocked state according to an embodiment of the present invention;
[0029] Figure 4 shows a schematic cross-sectional view at CC in Figure 3;
[0030] Figure 5 shows a schematic diagram of the structure of the insulating bolt according to an embodiment of the present invention;
[0031] Figure 6 shows a schematic diagram of the locking monitoring device when the turnout is in the locked state according to an embodiment of the present invention;
[0032] Figure 7 shows a schematic cross-sectional view of DD in Figure 6.
[0033] In the diagram: 1. Locking cylinder; 2. Locking sleeve; 3. Locking rod; 4. First locking block; 5. Second locking block; 6. Contact sensor; 7. First through hole; 8. Second through hole; 9. First sliding groove; 10. Second sliding groove; 11. Limiting groove; 12. First sealing element; 13. Second sealing element; 14. Connecting ring; 15. Recess; 16. Connecting part; 17. Third through hole; 18. Limiting boss; 19. Insulating bolt; 20. Internal threaded hole; 21. Head; 22. Threaded part; 23. Mounting hole; 24. Mounting plane. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] It should be noted that the terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings.
[0036] This invention provides a locking monitoring device that can upload monitoring data and remotely view the locking results at any time, thus avoiding misjudgment of the locking results.
[0037] As shown in Figures 1 and 2, a locking monitoring device includes a locking cylinder 1, a locking sleeve 2, a locking assembly, a second locking block 5, and a contact sensor 6.
[0038] The locking sleeve 2 is fitted on the outside of the locking rod 3, and the locking rod 3 can slide axially within the locking sleeve 2; the locking cylinder 1 is fitted on the outside of the locking sleeve 2, and the locking sleeve 2 can slide axially within the locking cylinder 1; the locking assembly is movably mounted on the locking sleeve 2; and the locking rod 3 drives the locking sleeve 2 to slide axially along the locking cylinder 1 through the locking assembly.
[0039] For example, the locking assembly includes a first locking block 4 and a second locking block 5. The first locking block 4 and the second locking block 5 are spaced apart along the axial direction of the locking sleeve 2. The locking rod 3 drives the locking sleeve 2 to slide in a first direction through the first locking block 4, and the locking rod 3 drives the locking sleeve 2 to slide in a second direction through the second locking block 5. The first direction and the second direction are opposite.
[0040] As shown in Figure 3, for example, the side wall of the locking sleeve 2 is provided with a first through hole 7 and a second through hole 8 in the radial direction, and the first through hole 7 and the second through hole 8 are spaced apart along the axial direction of the locking sleeve 2.
[0041] The first locking block 4 is slidably disposed in the first through hole 7, and the second locking block 5 is slidably disposed in the second through hole 8. The top ends of the first locking block 4 and the second locking block 5 can both extend outward to the outside of the locking sleeve 2 to protrude from the outer wall of the locking sleeve 2. The bottom ends of the first locking block 4 and the second locking block 5 can both move towards the inner cavity of the locking sleeve 2 and protrude from the inner wall of the locking sleeve 2.
[0042] As shown in Figure 2, for example, the outer side wall of the locking rod 3 is provided with an annular first sliding groove 9 and a second sliding groove 10 along the circumferential direction. The first sliding groove 9 and the second sliding groove 10 are spaced apart along the axial direction of the locking rod 3. The bottom end of the first locking block 4 can slide in the first sliding groove 9, and the bottom end of the second locking block 5 can slide in the second sliding groove 10.
[0043] As shown in Figure 3, an annular limiting groove 11 is provided on the inner wall surface of the locking cylinder 1 along the circumferential direction. For example, the limiting groove 11 is provided at one end of the locking cylinder 1 near the second locking block 5. A contact sensor 6 is provided at the position of the limiting groove 11 on the locking cylinder 1. When the locking component is located in the limiting groove 11, the contact sensor 6 is turned on, and the locking sleeve 2 is in a relatively locked state relative to the locking cylinder 1.
[0044] For example, when the locking rod 3 moves axially, it drives the locking sleeve 2 to move through the first locking block 4 until the second locking block 5 is located in the limiting groove 11. The top of the second locking block 5 is pushed into the limiting groove 11. At this time, the locking sleeve 2 is in a relatively locked state relative to the locking cylinder 1.
[0045] Contact sensor 6 detects the approach of metal. When the top of the second locking block 5 is located in the limiting groove 11, it triggers contact sensor 6 to transmit data to the external system, which can confirm that the turnout is successfully locked and avoid misjudgment of the locking result.
[0046] As shown in Figure 6, for example, a first sealing element 12 is provided between the inner walls of both ends of the locking sleeve 2 and the outer wall of the locking rod 3, and a second sealing element 13 is provided between the inner walls of both ends of the locking cylinder 1 and the outer wall of the locking sleeve 2. During the axial sliding process of the locking rod 3 relative to the locking sleeve 2, the first sliding groove 9 and the second sliding groove 10 of the locking rod 3 are always located between the two first sealing components to prevent the first sliding groove 9 and the second sliding groove 10 from extending out of the locking sleeve 2 and losing their sealing function.
[0047] As shown in Figure 1, for example, a connecting ring 14 is provided on the outer wall of the locking cylinder 1, which is used to connect to the basic rail. Multiple recesses 15 are provided on the outer walls of both ends of the locking sleeve 2, and the locking sleeve 2 can be connected to the outside by using a wrench to engage with the recesses 15.
[0048] As shown in Figures 1 and 2, for example, a connecting part 16 is provided at one end of the locking rod 3 near the second locking block 5. The connecting part 16 has two planes that are parallel to each other along the axial direction. A third through hole 17 is also provided on the connecting part 16, penetrating the two planes. The locking rod 3 is connected to the switch machine through the connecting part 16. An annular limiting boss 18 is provided at the other end of the locking rod 3 to prevent the locking rod 3 from coming out of the locking sleeve 2.
[0049] As shown in Figures 1 and 3, for example, the locking monitoring device also includes an insulating bolt 19. The contact sensor 6 is detachably connected to the locking cylinder 1 via the insulating bolt 19. The contact sensor 6 is fixed to the locking cylinder 1 by the insulating bolt 19, which facilitates replacement and installation. The insulating bolt 19 forms insulation between the contact sensor 6 and the locking cylinder 1, which is used for insulation scenarios such as lightning protection. For example, the insulating bolt 19 can be made of nylon material.
[0050] As shown in Figure 4, for example, the locking cylinder 1 is provided with an internal threaded hole 20 at the position of the limiting groove 11, and the internal threaded hole 20 extends from the outer side of the locking cylinder 1 to the limiting groove 11.
[0051] As shown in Figure 5, for example, the insulating bolt 19 includes a head 21 and a threaded portion 22 that are connected to each other. The head 21 has a hexagonal cross-section to facilitate the installation of a wrench. The threaded portion 22 has an external thread along the circumference. The external thread of the threaded portion 22 is threadedly connected to the internal threaded hole 20. A through mounting hole 23 is provided between the head 21 and the threaded portion 22. The contact sensor 6 is fixedly installed in the mounting hole 23.
[0052] For example, multiple internal threaded holes 20 are provided around the locking cylinder 1, and multiple internal threaded holes 20 are provided on the locking cylinder 1, so that the contact sensor 6 on the locking cylinder 1 can be installed at different angles, which is suitable for different installation occasions.
[0053] As shown in Figure 1, for example, the locking cylinder 1 is provided with a mounting surface 24 at each internal thread hole 20 position. The mounting surface 24 fits against the bottom surface of the insulating bolt 19, which facilitates the installation and fixing of the insulating bolt 19.
[0054] For example, four first locking blocks 4 and four second locking blocks 5 are arranged at intervals along the circumference of the locking rod 3, and four first through holes 7 and four second through holes 8 are arranged at intervals along the circumference of the locking sleeve 2. Each first through hole 7 contains one first locking block 4, and each second through hole 8 contains one second locking block 5.
[0055] Both the locking sleeve 2 and the locking rod 3 are cylindrical and will rotate relative to the locking cylinder 1 to accommodate the crawling of the switch rail. The radial positions of the first locking block 4 and the second locking block 5 will also change at any time, so it is necessary to ensure that the position of the second locking block 5 is monitored.
[0056] For example, multiple contact sensors 6 are provided, and all multiple contact sensors 6 are detachably connected to the locking cylinder 1 by insulating bolts 19. The included angle between the center lines of the multiple contact sensors 6 is determined according to the shape of the second locking block 5 and the included angle between the multiple second locking blocks 5, so that when the radial position of the second locking block 5 moves into the limiting groove 11 changes, one or more contact sensors 6 can still be triggered to turn on, avoiding monitoring blind spots.
[0057] As shown in Figure 7, for example, two contact sensors 6 are provided, and the included angle A of the center lines of the two contact sensors 6 is 35°~55° or 125°~145°. Eight internal threaded holes 20 and mounting plane 24 are evenly distributed around the locking cylinder 1. The two contact sensors 6 are installed in two adjacent internal threaded holes 20 by insulating bolts 19.
[0058] For example, the first locking block 4 and the second locking block 5 have the same structure. The first locking block 4 and the second locking block 5 are set in a fan shape. The cross-section of the first locking block 4 and the second locking block 5 is octagonal. The four first locking blocks 4 and the four second locking blocks 5 are evenly distributed along the circumference of the locking rod 3. The fan angle B of the first locking block 4 and the second locking block 5 is 55° to avoid blind spots in monitoring and to ensure that the four second locking blocks 5 can be successfully monitored when rotated to any position.
[0059] The principle of avoiding monitoring blind spots is as follows: the sector angle B of the four second locking blocks 5 is set to 55° and is evenly distributed within the 360° rotation angle range. Therefore, the blind spot angle between two adjacent sector second locking blocks 5 is 35°. Then, the monitoring angle R is greater than 35° and less than 90°, which can ensure that the contact sensor 6 detects the second locking block 5.
[0060] As shown in Figures 3 and 6, the working principle of the locking monitoring device of the present invention is as follows: one end of the locking monitoring device is locked, that is, the first locking block 4 slides in the first slide groove 9 and is not used for locking; the end of the locking monitoring device near the second locking block 5 is locked; the locking rod 3 moves axially away from the locking cylinder 1; after the second locking block 5 abuts against the side wall of the second slide groove 10 near the first locking block 9, the bottom of the first locking block 4 extends out of the first through hole 7 and is located in the first slide groove 9; the locking rod 3 drives the locking through the second locking block 5. The locking sleeve 2 moves away from the locking cylinder 1, and the bottom of the first locking block 4 slides in the first sliding groove 9. When the top of the second locking block 5 is below the limiting groove 11, the top of the second locking block 5 is pushed into the limiting groove 11, and the bottom of the second locking block 5 slides out from the second sliding groove 10. The locking sleeve 2 is in a locked state relative to the locking cylinder 1. The contact sensor 6 is triggered and turned on by the second locking block 5. The signal of the contact sensor 6 being turned on is transmitted to the external system. The external system confirms that the turnout is successfully locked based on the signal of the contact sensor 6 being turned on.
[0061] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A locking monitoring device, characterized in that, It includes a locking cylinder (1), a locking sleeve (2), a locking rod (3), a locking assembly, and a contact sensor (6); The locking sleeve (2) is sleeved on the outside of the locking rod (3), and the locking rod (3) can slide axially within the locking sleeve (2). The locking cylinder (1) is sleeved on the outside of the locking sleeve (2), and the locking assembly is movably disposed on the locking sleeve (2). The locking rod (3) drives the locking sleeve (2) to slide axially along the locking cylinder (1) through the locking assembly. The inner wall surface of the locking cylinder (1) is provided with a limiting groove (11) in the circumferential direction. The locking cylinder (1) is provided with a contact sensor (6) at the position of the limiting groove (11). When the locking assembly is located in the limiting groove (11), the contact sensor (6) is turned on, and the locking sleeve (2) is in a relatively locked state relative to the locking cylinder (1).
2. The locking monitoring device according to claim 1, characterized in that, The locking assembly includes a first locking block (4) and a second locking block (5); The first locking block (4) and the second locking block (5) are spaced apart along the axial direction of the locking sleeve (2). The locking rod (3) drives the locking sleeve (2) to slide along the first direction through the first locking block (4). The locking rod (3) drives the locking sleeve (2) to slide along the second direction of the locking cylinder (1) through the second locking block (5). The limiting groove (11) is provided at one end of the locking cylinder (1) near the second locking block (5). The first direction and the second direction are opposite.
3. The locking monitoring device according to claim 2, characterized in that, The locking monitoring device also includes an insulating bolt (19), and the contact sensor (6) is detachably connected to the locking cylinder (1) via the insulating bolt (19).
4. The locking monitoring device according to claim 3, characterized in that, The locking cylinder (1) has an internal threaded hole (20) at the position of the limiting groove (11). The internal threaded hole (20) extends from the outer side of the locking cylinder (1) to the limiting groove (11). The insulating bolt (19) includes a head (21) and a threaded part (22) that are connected to each other. The threaded part (22) has an external thread in the circumferential direction. The external thread of the threaded part (22) is threadedly connected to the internal threaded hole (20). A through mounting hole (23) is provided between the head (21) and the threaded part (22). The contact sensor (6) is fixedly installed in the mounting hole (23).
5. The locking monitoring device according to claim 4, characterized in that, Multiple internal threaded holes (20) are provided around the circumference of the locking cylinder (1).
6. The locking monitoring device according to claim 4, characterized in that, The locking cylinder (1) is provided with an mounting surface (24) at each of the internal threaded holes (20).
7. The locking monitoring device according to any one of claims 4-6, characterized in that, Multiple contact sensors (6) are provided. The included angle between the center lines of the multiple contact sensors (6) is determined according to the shape of the second locking block (5) and the included angle between the multiple second locking blocks (5), so that when the radial position of the second locking block (5) moving into the limiting groove (11) changes, one or more contact sensors (6) can still be triggered to turn on.
8. The locking monitoring device according to claim 6, characterized in that, Two contact sensors (6) are provided, and the included angle A of the center lines of the two contact sensors (6) is 35°~55° or 125°~145°. Eight internal threaded holes (20) and eight mounting planes (24) are evenly distributed around the circumference of the locking cylinder (1). The two contact sensors (6) are installed in the two adjacent internal threaded holes (20) by means of the insulating bolts (19).
9. The locking monitoring device according to claim 8, characterized in that, The first locking block (4) and the second locking block (5) have the same structure. The first locking block (4) and the second locking block (5) are configured as a fan shape. The four first locking blocks (4) and the four second locking blocks (5) are evenly distributed along the circumference of the locking rod (3).
10. The locking monitoring device according to any one of claims 2-6, characterized in that, The locking sleeve (2) has a first through hole (7) and a second through hole (8) radially through its sidewall. The first through hole (7) and the second through hole (8) are spaced apart along the axial direction of the locking sleeve (2). The first locking block (4) is slidably disposed in the first through hole (7), and the second locking block (5) is slidably disposed in the second through hole (8). The locking rod (3) has an annular first sliding groove (9) and a second sliding groove (10) circumferentially disposed on its outer sidewall. The first sliding groove (9) and the second sliding groove (10) are spaced apart along the axial direction of the locking rod (3). The bottom end of the first locking block (4) can slide in the first sliding groove (9), and the bottom end of the second locking block (5) can slide in the second sliding groove (10).
11. The locking monitoring device according to any one of claims 2-6, characterized in that, A connecting ring (14) is provided on the outer wall of the locking cylinder (1), and a connecting part (16) is provided at one end of the locking rod (3) near the second locking block (5).