Outer locking device for switch rail

Abstract

The utility model discloses a switch rail outer locking device which comprises a locking frame, a locking rod, a lock hook, a switch rail connecting piece, a first protection piece, an oil injection device and a second protection assembly. The locking frame is arranged on one side of the stock rail; the locking frame is provided with a through opening and a locking piece, and the locking piece is located above the through opening. The locking rod is movably arranged in the through hole in a penetrating manner; the lock hook is arranged on the locking rod, and the locking rod can drive the lock hook to act; in good time, the lock hook can be connected with the locking piece; a switch rail connecting piece is arranged on the lock hook and is used for fixing the switch rail; an oil injection device is arranged on the locking frame, and the oil injection device achieves structure lubrication through a lock hook in good time; the first protection part is detachably arranged on the locking frame in a covering mode and used for protection, and the first protection part can cover the oil injection device; the second protection assembly is detachably arranged at one end of the locking rod in a covering mode. According to the utility model, important structures of the locking frame and the locking rod can be protected, and meanwhile, lubricating oil can be applied to the key structures.

Description

Technical Field

[0001] The utility model belongs to the technical field of external locking devices, and in particular relates to an external locking device for a switch rail. Background Art

[0002] Hook-type external locking devices are crucial for ensuring railway transportation safety. They work alongside switch machines to switch, lock, and mark turnouts. External locking devices are particularly essential on lines where train speeds exceed 120 km / h. To ensure normal train travel and steering, external locking devices require regular cleaning, lubrication, and maintenance to ensure smooth unlocking and locking of the hooks, thereby ensuring the proper switching of the rail switches.

[0003] The external locking device in the prior art refers to Figure 9 As shown, it mainly includes a locking frame 95, a locking iron 951, a locking rod 96, a point rail connecting iron 97, a locking hook 98 and a connecting rod assembly 99. The locking iron 951 is arranged on the locking frame 95, and the locking frame 95 is fixed to the side wall of the basic rail 91 by bolts 93 and nuts 94. The locking rod 96 is slidably inserted into the through opening 952 opened in the middle of the locking frame 95. The point rail connecting iron 97 is movably installed on both sides of the locking rod 96 through a pin shaft. One side of the point rail connecting iron 97 is used to fix the point rail 92. The ends of the two locking rods 96 that need to be connected to each other are connected through a connecting rod assembly 99.

[0004] In the aforementioned external locking device for the point rail, when in the locked state, the contact portion between the locking iron on the locking frame and the locking hook is always exposed, making it susceptible to rust due to environmental factors such as rain, which can prevent the two from locking or unlocking properly, leading to malfunction of the entire device. Furthermore, existing external locking devices for the point rail require regular application of lubricating oil, which is often done manually. However, manual application is difficult to achieve on a regular basis, and the amount of lubricating oil produced is difficult to control, which not only increases the workload of technicians but also results in lubricating oil waste. Therefore, it is necessary to develop a new external locking device for the point rail to protect the important structures of the locking frame and locking rod, while also ensuring the proper application of lubricating oil to key structures.

[0005] Therefore, a new technology is needed to solve the problem of lacking a new type of external locking device for the switch rail in the prior art. Utility Model Content

[0006] In order to solve the above problems in the prior art, the present invention provides a point rail external locking device, which can protect the important structures of the locking frame and the locking rod, and at the same time, can realize the application of lubricating oil to the key structures.

[0007] The utility model adopts the following technical solutions:

[0008] The cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring, and the cam is secured to the cam face by a spring

[0009] Furthermore, the first protective member is a first protective frame, and the first protective frame is detachably disposed on the locking frame.

[0010] Furthermore, a point rail external locking device also includes an elastic fixing component, which includes an insertion rod and a spring; a mounting slot is provided on the locking frame; one end of the spring is connected and fixed to the mounting slot, and the other end is connected and fixed to the insertion rod; the insertion rod is telescopically adjustable in the mounting slot through the spring; a connecting hole corresponding to the arrangement position of the mounting slot is provided on the first protective member; the insertion rod is used to connect the connecting hole to achieve the fixation of the first protective member.

[0011] Furthermore, the oil filling device includes an oil storage tank and an oil filling pipe structure; the oil storage tank is arranged at a set position of the locking frame and is located above the through opening; the oil filling pipe structure is arranged at the bottom of the oil storage tank, and the bottom end position of the oil filling pipe structure is arranged corresponding to the locking hook in the locked state, and the locking hook in the locked state can contact the bottom end of the oil filling pipe structure to resist the oil filling restriction of the oil filling pipe structure.

[0012] Furthermore, the oil storage tank is provided with a refueling hole; corresponding to the arrangement position of the refueling hole, the first protective member is provided with a through hole; after the first protective member is installed on the locking frame, the through hole is connected to the refueling hole;

[0013] The oil filling device further includes a plug, which is used to seal the through hole and the oil filling hole.

[0014] Furthermore, the stopper is a rubber stopper.

[0015] Furthermore, the oil filling pipe structure includes an oil filling pipe and a small bead arranged in the oil filling pipe; the top end of the oil filling pipe is connected to the oil storage tank, and the bottom end is located above "the connection between the locking member and the lock hook in the locked state"; the bottom end of the oil filling pipe is a conical end, which is wide at the top and narrow at the bottom; the small bead can be at the bottom end of the conical end; the radius of the small bead is larger than the radius of the bottom end of the conical end; the lock hook in the locked state can push away the blockage of the small bead on the bottom end of the conical end to achieve oil filling and lubrication.

[0016] Furthermore, the oil storage tank is a transparent structure oil storage tank; the first protective member is provided with an observation window for observing the oil level in the transparent structure oil storage tank.

[0017] Furthermore, the second protection assembly includes a second protection frame and a bottom plate; the second protection frame can be arranged to cover the connection between the two locking rods; and the bottom plate is detachably arranged under the second protection frame.

[0018] Furthermore, the second protective assembly further includes a double-sided adhesive layer, and the bottom plate is detachably fixed to the bottom of the second protective frame through the double-sided adhesive layer.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model discloses a point rail outer locking device, which protects the contact portion between the lock hook and the lock member in the locked state through the first protective member, thereby preventing rainwater from directly dripping on the lock hook and the lock member, reducing the possibility of rust between the lock hook and the lock member, and ensuring smooth locking or unlocking between the lock hook and the lock member; the first protective member arranges the lock frame cover inside, effectively realizing protection, reducing the possibility of rust at the detachable connection between the lock frame and the base rail (such as the connection between the bolt and the nut), and effectively prolonging the service life of the lock frame and its lock member; at the same time, the first protective member also arranges the oil filling device cover inside, thereby realizing safe protection of the oil filling device.

[0021] The utility model provides a point rail external locking device, wherein the oil injection device utilizes the lock hook in the locked state to unlock the oil injection restriction, and can apply lubricating oil to the contact portion between the lock hook and the locking member, thereby greatly reducing the workload of technicians, further reducing the possibility of rust between the lock hook and the locking member, and further improving the smoothness of locking or unlocking between the lock hook and the locking member.

[0022] The utility model provides a point rail external locking device, which provides protection for the mutual connection between the two locking rods by arranging a second protective component at one end of the locking rod, which can effectively reduce the possibility of rust at the mutual connection between the two locking rods, facilitates technicians to disassemble and assemble the locking rods, and facilitates maintenance operations.

[0023] The utility model can protect the important structures of the locking frame and the locking rod, and at the same time, can realize the application of lubricating oil to the key structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a three-dimensional schematic diagram of the external locking device of the switch rail of the utility model arranged on the stock rail (mainly showing the first protective member and the second protective assembly) (wherein the stock rail and the switch rail are sections of set lengths, i.e., they are partially schematically shown here);

[0026] Figure 2 yes Figure 1 A three-dimensional schematic diagram when the first protective member, the oil injection device, and the second protective assembly are not provided;

[0027] Figure 3 yes Figure 1 A three-dimensional schematic diagram (partial schematic diagram) of a locking frame provided with an oiling device;

[0028] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the pre-assembly of the middle locking frame and the elastic fixing component;

[0029] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the first protective member;

[0030] Figure 6 A diagram showing the positional relationship between the stock rail, locking frame, locking member, oiling device, locking rod, locking hook, point rail connector, and point rail in the locked state (the technical feature that the locking rod can drive the locking hook to move (which belongs to the prior art) is not shown);

[0031] Figure 7 yes Figure 6 A local enlarged view at G;

[0032] Figure 8 yes Figure 1 A schematic diagram of the pre-assembly of the second protective component;

[0033] Figure 9 It is the external locking device mentioned in the background technology (external technology).

[0034] Reference numerals:

[0035] 1-locking frame; 11-through opening; 12-locking piece; A-locking iron; 13-mounting slot; 14-top; 15-side wall;

[0036] 2-locking rod; F-interconnection;

[0037] 3-lock hook;

[0038] 4- switch rail connector; B- switch rail connecting iron;

[0039] 5-first protective member; C-first protective frame; C1-top; C2-side wall; 51-connection hole; 52-through hole;

[0040] 6-Oil filling device; 61-Oil storage tank; 611-Oil filling hole; 62-Oil filling pipe structure; 621-Oil filling pipe; D-Conical end; E-Bottom end; 622-Ball; 63-Plug; G-Local enlarged figure number;

[0041] 7-second protective assembly; 71-second protective frame; 72-double-sided adhesive layer; 73-bottom plate;

[0042] 8-elastic fixing assembly; 81-insertion rod; 82-spring;

[0043] 91-base rail; 92-point rail; 93-bolt; 94-nut;

[0044] 95-locking frame; 951-locking iron; 952-through port; 96-locking rod; 97-point rail connecting iron; 98-locking hook; 99-connecting rod assembly. DETAILED DESCRIPTION

[0045] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0046] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," and "right" used in this utility model are only used with respect to the relative positions of the components of the utility model in the accompanying drawings.

[0047] Reference Figures 1 to 8, a point rail external locking device, comprising a locking frame 1, a locking rod 2, a locking hook 3, a point rail connecting member 4, a first protective member 5, an oil injection device 6 and a second protective assembly 7; the locking frame 1 is detachably arranged on one side of the base rail 91, preferably, the locking frame 1 is fixed to one side of the base rail 91 by bolts 93 and nuts 94; the locking frame 1 is provided with a through opening 11 and a locking member 12, and the locking member 12 is located above the through opening 11; the locking rod 2 is movably inserted into the through opening 11; the locking hook 3 is arranged on the locking rod 2, and the locking rod 2 can drive the locking hook 3 to move; when appropriate, the The locking hook 3 can be in contact and connected with the locking member 12; the locking hook 3 is provided with the point rail connector 4, and the point rail connector 4 is used to fix the point rail 92; the locking hook 3 can be locked or unlocked under the drive of the locking rod 2; the oil injection device 6 is provided at the set position of the locking frame 1, and the oil injection device 6 uses the locking hook 3 to achieve structural lubrication in a timely manner; the first protective member 5 is detachably covered and is arranged on the locking frame 1 for protection, and the first protective member 5 can cover the oil injection device 6 therein; the second protective component 7 is detachably covered and is arranged at one end of the locking rod 2 that needs to be connected to each other.

[0048] Reference Figure 2 Preferably, the locking member 12 is a locking iron A, and the locking iron A can be welded and fixed on the locking frame 1, or can be made integrally with the locking frame 1.

[0049] Reference Figure 2 Preferably, the locking member 12 is a locking iron A, and the switch rail connector 4 is a switch rail connector B. The locking frame 1, the locking iron A, the locking rod 2, the locking hook 3, and the switch rail connector B are all prior art. The working principle of the switch rail external locking device for achieving locking or unlocking can be referred to the prior art and will not be described in detail here.

[0050] Reference Figure 1 In one embodiment, the first protective member 5 is a first protective frame C, and the first protective frame C is detachably disposed on the locking frame 1 .

[0051] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 5In one embodiment, a point rail external locking device further includes an elastic fixing component 8, which includes an insertion rod 81 and a spring 82; a mounting slot 13 is provided on the locking frame 1; one end of the spring 82 is connected and fixed to the bottom of the mounting slot 13, and the other end is connected and fixed to the insertion rod 81; the insertion rod 81 is telescopically adjustable in the mounting slot 13 through the spring 82; a connecting hole 51 corresponding to the arrangement position of the mounting slot is provided on the first protective member 5; the insertion rod 81 is used to connect the connecting hole 51 to achieve the fixation of the first protective member 5 (such as one end of the insertion rod 81 passes through the connecting hole 51 and is inserted into the connecting hole 51 to achieve the fixation of the first protective member 5).

[0052] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 5 In one embodiment, the top 14 and the two side walls 15 of the locking frame 1 are respectively provided with two of the mounting grooves 13; correspondingly, each of the mounting grooves 13 is provided with a group of the elastic fixing components 8; correspondingly, the top C1 and the two side walls C2 of the first protective frame C are respectively provided with two of the connecting holes 51.

[0053] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 5 In one embodiment, when installing the first protective frame C, the insertion rod 81 is first pressed so that the insertion rod 81 is retracted into the installation groove 13 by relying on the spring 82, and then the first protective frame C is covered on the outside of the locking frame 1 so that the locking frame 1 is completely located in the first protective frame C, and the first protective frame C is adjusted so that the insertion rod 81 is communicated with the connecting hole 51, and the rebound force of the spring 82 is used to push the insertion rod 81 to move out of the installation groove 13, and then the insertion rod 81 is inserted into the connecting hole 51, thereby fixing the first protective frame C on the locking frame 1, thereby playing the protective role of the first protective frame C on the locking frame 1 (with the bolt 93 and nut 94 parts), the locking member 12 and the oil filling device 6 and other structures (that is, the important structures of the locking frame are protected).

[0054] Reference Figures 1 to 7In one embodiment, the oil filling device 6 includes an oil storage tank 61 and an oil filling pipe structure 62; the oil storage tank 61 is arranged at a set position of the locking frame 1 and is located above the through opening 11; the oil filling pipe structure 62 is arranged at the bottom of the oil storage tank 61, and the bottom end position of the oil filling pipe structure 62 is arranged corresponding to the lock hook 3 in the locked state. The lock hook 3 in the locked state can contact the bottom end of the oil filling pipe structure 62 to resist the oil filling restriction of the oil filling pipe structure 62.

[0055] Reference Figure 1 、 Figure 5 and Figure 6 In one embodiment, the oil storage tank 61 is provided with a refueling hole 611; corresponding to the arrangement position of the refueling hole 611, the first protective member 5 is provided with a through hole 52; after the first protective member 5 is installed on the locking frame 1, the through hole 52 is connected to the refueling hole 611;

[0056] The oil filling device 6 further includes a plug 63 , which is used to seal the through hole 52 and the oil filling hole 611 .

[0057] Reference Figure 1 、 Figure 5 and Figure 6 In one embodiment, the plug 63 is a rubber plug. The through hole 52 and the oil filling hole 611 can facilitate technicians to inject lubricating oil into the oil storage tank 61. After the injection is completed, the through hole 52 and the oil filling hole 611 are sealed with the rubber plug.

[0058] Reference Figure 1 、 Figure 3 、 Figure 6 and Figure 7 In one embodiment, the oil filling pipe structure 62 includes an oil filling pipe 621 and a small bead 622 arranged in the oil filling pipe; the top end of the oil filling pipe 621 is connected to the oil storage tank 61, and the bottom end is located above "the connection between the locking member 12 and the lock hook 3 in the locked state"; the bottom end of the oil filling pipe 621 is a conical end D, and the conical end D is wide at the top and narrow at the bottom; the small bead 622 can be at the bottom end E of the conical end D (the small bead 622 is movably arranged at the bottom end E); the radius of the small bead 622 is larger than the radius of the bottom end E of the conical end D; the lock hook 3 in the locked state can resist the blockage of the small bead 622 on the bottom end E of the conical end D to achieve oil filling and lubrication.

[0059] Reference Figure 6 and Figure 7 In one embodiment, the oil filling pipe 621 is a vertical oil filling pipe.

[0060] In one embodiment, the oil storage tank 61 is a transparent structure oil storage tank; the first protective member 5 is provided with an observation window for observing the oil level in the transparent structure oil storage tank. This design can facilitate technicians to add lubricating oil in a timely manner.

[0061] Reference Figure 1 、 Figure 3 、 Figure 6 and Figure 7 In one embodiment, the oil filling device 6 has been fixed in advance to the setting position of the locking frame 1, and its oil filling pipe 621 is above the lock hook 3 in the locked state. When the outer locking device of the point rail of the utility model works and fixes the point rail 92 on the base rail 91, the lock hook 3 is hooked on one side of the locking member 2. At this time, the top of the lock hook 3 in the locked state will squeeze the small ball 622 set at the bottom end of the oil filling pipe 621 upward, so that the small ball 622 moves from the bottom end of the oil filling pipe 621 into the oil filling pipe 621. At this time, the bottom end E of the oil filling pipe 621 releases the oil filling restriction, and the lubricating oil in the oil tank 61 flows into the oil filling pipe 621, and then drips onto the lock hook 3 through the gap between the outer surface of the small ball 622 and the inner surface of the oil filling pipe 621, thereby activating the lock hook 3 and the lock Lubrication is performed between the closing parts 2 (i.e., the application of lubricating oil to the key structure is achieved); when the external locking device of the point rail of the utility model releases the fixation between the point rail 92 and the basic rail 91, the locking hook 3 will detach from one side of the locking frame 1. At this time, the locking hook 3 no longer presses the small ball 622 upward, and the gravity generated by the lubricating oil in the oil filling tube 621 will push the small ball 622 to move toward the bottom end E of the oil filling tube 621. The radius of the small ball 622 is greater than the radius of the bottom end E of the oil filling tube 621, so that the small ball 622 can block the bottom end E of the oil filling tube 621 without falling off from the bottom end E of the oil filling tube 621, which is beneficial to avoid oil leakage from the oil filling tube 621, and can also prevent the lubricating oil in the oil filling tube 621 from deteriorating and hardening and blocking the bottom end E.

[0062] Reference Figure 1 、 Figure 2 and Figure 8 In one embodiment, the second protective assembly 7 includes a second protective frame 71 and a bottom plate 73; the second protective frame 71 can be covered at the connection point F between the two locking rods 2; and the bottom plate 73 can be detachably arranged under the second protective frame 71.

[0063] Reference Figure 1 、 Figure 2 and Figure 8In one embodiment, the second protective assembly 7 further includes a double-sided adhesive layer 72, and the bottom plate 73 is detachably fixed to the bottom of the second protective frame 71 via the double-sided adhesive layer 72. Specifically, the double-sided adhesive layer 72 is provided around the bottom of the second protective frame 71, and the bottom plate 73 is adhered below the double-sided adhesive layer 72. After the second protective frame 71 and the bottom plate 73 are connected, the connection F between the two locking rods 2 is covered therein (i.e., the important structural part of the locking rods is protected). When the connection F between the two locking rods 2 is connected by a bolt 93 and a nut 94, the second protective frame 71 of the present invention can effectively cover the bolt 93 and the nut 94, preventing rainwater from directly dripping onto the connection, reducing the possibility of rust at the connection F between the two locking rods 2, and thus facilitating technicians to remove the two locking rods 2 when necessary, thereby facilitating maintenance work.

[0064] Reference Figure 1 、 Figure 2 and Figure 8 In one embodiment, when it is necessary to protect the connection F between the two locking rods 2, first, the ends of the two locking rods 2 that need to be connected to each other are connected and fixed using bolts 93 and nuts 94, and the bottom plate 73 is placed at the corresponding position. Then, the second protective frame 71 is put down so that the second protective frame 71 covers the connection F between the two locking rods 2, and the bottom plate 73 is adhered and fixed to the bottom of the second protective frame 71 through the double-sided adhesive layer 72, so that the parts connecting the two locking rods 2, the bolts 93 and the nuts 94 are all covered in the second protective frame 71, thereby preventing rainwater from dripping directly on the bolts 93 and nuts 94, thereby reducing the possibility of rust on the bolts 93 and nuts 94, and making it easier for technicians to remove the two locking rods 2 when necessary.

[0065] For other contents of the external locking device for a point rail described in the present invention, please refer to the prior art and will not be described in detail here.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A switch rail external locking device, characterized in that: The invention comprises a locking frame, a locking rod, a locking hook, a point rail connecting piece, a first protective piece, an oil injection device and a second protective assembly; the locking frame is detachably arranged on one side of the basic rail; the locking frame is provided with a through opening and a locking piece, and the locking piece is located above the through opening; the locking rod is movably inserted into the through opening; the locking hook is provided on the locking rod, and the locking rod can drive the locking hook to move; the locking hook can be connected to the locking piece at appropriate times; the locking hook is provided with the point rail connecting piece, and the point rail connecting piece is used to fix the point rail; the oil injection device is provided at the set position of the locking frame, and the oil injection device uses the locking hook to achieve structural lubrication at appropriate times; the first protective piece is detachably covered on the locking frame for protection, and the first protective piece can cover the oil injection device therein; the second protective assembly is detachably covered at one end of the locking rod.

2. The external locking device of the switch rail according to claim 1, characterized in that: The first protection component is a first protection frame, and the first protection frame is detachably arranged on the locking frame.

3. The external locking device of the switch rail according to claim 1, characterized in that: It also includes an elastic fixing component, which includes an insertion rod and a spring; a mounting slot is provided on the locking frame; one end of the spring is connected and fixed to the mounting slot, and the other end is connected and fixed to the insertion rod; the insertion rod is telescopically adjustable in the mounting slot through the spring; a connecting hole corresponding to the arrangement position of the mounting slot is provided on the first protective member; the insertion rod is used to connect the connecting hole to achieve the fixation of the first protective member.

4. The external locking device for the switch rail according to claim 1, characterized in that: The oil filling device includes an oil storage tank and an oil filling pipe structure; the oil storage tank is arranged at a set position of the locking frame and is located above the through opening; the oil filling pipe structure is arranged at the bottom of the oil storage tank, and the bottom end position of the oil filling pipe structure is arranged corresponding to the locking hook in the locked state. The locking hook in the locked state can contact the bottom end of the oil filling pipe structure to resist the oil filling restriction of the oil filling pipe structure.

5. The external locking device of the switch rail according to claim 4, characterized in that: The oil tank is provided with a refueling hole; corresponding to the arrangement position of the refueling hole, the first protective member is provided with a through hole; after the first protective member is installed on the locking frame, the through hole is connected to the refueling hole; The oil filling device further includes a plug, which is used to seal the through hole and the oil filling hole.

6. The external locking device for the switch rail according to claim 5, characterized in that: The stopper is a rubber stopper.

7. The external locking device for the switch rail according to claim 4, characterized in that: The oil filling pipe structure includes an oil filling pipe and a small bead arranged in the oil filling pipe; the top end of the oil filling pipe is connected to the oil storage tank, and the bottom end is located above "the connection between the locking member and the lock hook in the locked state"; the bottom end of the oil filling pipe is a conical end, which is wide at the top and narrow at the bottom; the small bead can be at the bottom end of the conical end; the radius of the small bead is larger than the radius of the bottom end of the conical end; the lock hook in the locked state can push away the blockage of the bottom end of the conical end by the small bead to achieve oil filling and lubrication.

8. The external locking device for the switch rail according to claim 4, characterized in that: The oil storage tank is a transparent structure oil storage tank; the first protective member is provided with an observation window for observing the oil level in the transparent structure oil storage tank.

9. The external locking device for the switch rail according to any one of claims 1 to 8, characterized in that: The second protection assembly includes a second protection frame and a bottom plate; the second protection frame can be arranged to cover the connection between the two locking rods; and the bottom plate is detachably arranged under the second protection frame.

10. The external locking device of the switch rail according to claim 9, characterized in that: The second protective assembly further includes a double-sided adhesive layer, and the bottom plate is detachably fixed to the bottom of the second protective frame through the double-sided adhesive layer.

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