A railway switch indicating rod device

Abstract

The present invention relates to the field of railway equipment, and discloses a railway switch indicating rod device. The railway switch indicating rod device includes a connecting piece, a joint piece, an indicating rod and a limiting structure. The connecting piece is configured to be connected to the switch rail on one side of the stock rail; one end of the joint piece is rotatably connected to the connecting piece; the indicating rod is connected to the other end of the joint piece; the limiting structure is connected to the stock rail and is used for limiting the indicating rod in the length direction of the stock rail. The present invention can solve the faults of abnormal or even jammed notch information in the switch machine caused by the creep of the switch rail, which will be beneficial to reducing the on-site failure rate, extending the adjustment period of the indicating notch, greatly reducing the on-site maintenance workload, and also playing a positive role in the train operation efficiency and train operation safety.

Description

Technical Field

[0001] The present invention relates to the field of railway equipment, and particularly to a railway switch indicating rod device. Background Art

[0002] A railway switch indicating rod is a connecting rod between a switch machine and a switch rail (frog rail), used to transmit force and displacement to correctly feedback the position of the switch. Before the spring thawing and before winter, due to large temperature changes, the switch rails creep forward and backward, which can easily cause failures of the switch external locking equipment.

[0003] The existing joint device of the railway switch indicating rod has poor adaptability to the creep of the switch rail. When the switch rail has a large creep along the track direction of the rail, it will cause a position change of the indicating rod, resulting in not only abnormal notch information or jamming, but even the fracture of the indicating rod and the joint device due to the impact of the train wheel pair on the rail. Summary of the Invention

[0004] Based on the above problems, the purpose of the present invention is to provide a railway switch indicating rod device to improve the adaptability of the indicating rod to the forward and backward creep of the switch rail.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A railway switch indicating rod device includes:

[0007] A connecting member configured to be connected to a switch rail on one side of the stock rail;

[0008] A joint member, one end of the joint member is rotatably connected to the connecting member;

[0009] An indicating rod connected to the other end of the joint member;

[0010] A limiting structure connected to the stock rail for limiting the indicating rod in the length direction of the stock rail.

[0011] As a preferred solution of the railway switch indicating rod device of the present invention, the indicating rod is connected to the joint member through a fine-tuning assembly. The fine-tuning assembly includes an angular contact spherical plain bearing and an adjusting nut. A stepped hole is provided on the joint member. The angular contact spherical plain bearing is arranged in the stepped hole. The adjusting nut is connected to the joint member and abuts against the angular contact spherical plain bearing. The indicating rod passes through the angular contact spherical plain bearing and the adjusting nut.

[0012] As a preferred embodiment of the railway switch indicating rod device of the present invention, the fine adjustment assembly further includes a button shaft sleeve and a non-button shaft sleeve. The button shaft sleeve is engaged with the non-button shaft sleeve and sleeved on the indicating rod respectively. The angular contact spherical plain bearing is sleeved on the button shaft sleeve and the non-button shaft sleeve, and the adjusting nut is sleeved on the non-button shaft sleeve.

[0013] As a preferred embodiment of the railway switch indicating rod device of the present invention, a perforated disc is provided on the adjusting nut, and a plurality of positioning holes are provided on the perforated disc. A connecting hole is provided on the joint piece, and the connecting hole is matched with one of the plurality of positioning holes through a pin shaft.

[0014] As a preferred embodiment of the railway switch indicating rod device of the present invention, the limiting structure includes a first limiting block and a second limiting block arranged at intervals. The first limiting block is clamped on one side of the stock rail, and the second limiting block is clamped on the other side of the stock rail. Limiting grooves are provided on both the first limiting block and the second limiting block, and the indicating rod passes through the limiting grooves.

[0015] As a preferred embodiment of the railway switch indicating rod device of the present invention, the limiting structure further includes a fastening assembly. One end of the fastening assembly is connected to the first limiting block, and the other end is connected to the second limiting block.

[0016] As a preferred embodiment of the railway switch indicating rod device of the present invention, the fastening assembly includes a lockbolt, a first nut, a second nut and a locknut. One end of the lockbolt passes through the first limiting block and is connected to the first nut. The other end of the lockbolt passes through the second limiting block and is connected to the second nut. The locknut is sleeved on the lockbolt. A limit pin is provided on the lockbolt. One side of the locknut abuts against the first nut, and the other side abuts against the limit pin.

[0017] As a preferred embodiment of the railway switch indicating rod device of the present invention, the connecting piece includes a connecting part and an installation part which are vertically connected. The connecting part is fixedly connected to the switch rail, and a stepped shaft is provided on the installation part. One end of the joint piece is rotationally connected to the installation part through the stepped shaft.

[0018] As a preferred embodiment of the railway switch indicating rod device of the present invention, an insulating plate is clamped between the connecting part and the switch rail.

[0019] As a preferred embodiment of the railway switch indicating rod device of the present invention, a sliding bearing is provided between the stepped shaft and the connecting piece. A baffle is provided at one end of the stepped shaft, and the baffle is connected to the connecting piece.

[0020] The beneficial effects of the present invention are as follows:

[0021] For the railway switch indicating rod device provided by the present invention, a connecting piece is used to connect with the switch rail on one side of the stock rail. One end of the joint piece is rotatably connected to the connecting piece, and the indicating rod is connected to the other end of the joint piece. At the same time, a limiting structure limits the indicating rod in the length direction of the stock rail. When the switch rail crawls (offsets) back and forth in the length direction of the stock rail, the switch rail drives the connecting piece to move, and the joint piece will adaptively rotate relative to the connecting piece. Under the limiting action of the limiting structure, the indicating rod will not offset in the length direction of the stock rail, but only offset a small distance in the vertical direction. The change of the notch inside the switch machine caused by the vertical swing of the indicating rod is much smaller than the change of the notch inside the switch machine caused by the horizontal swing of the indicating rod. It can solve the faults of abnormal notch information or even jamming inside the switch machine caused by the crawling of the switch rail, which is beneficial to reducing the on-site failure rate, extending the adjustment period of the indicating notch, greatly reducing the on-site maintenance workload, and also playing a positive role in the train operation efficiency and train operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0023] Figure 1 is an axonometric view of the railway switch indicating rod device provided by the specific embodiment of the present invention;

[0024] Figure 2 is a front view of the railway switch indicating rod device provided by the specific embodiment of the present invention;

[0025] Figure 3 is a sectional view of the railway switch indicating rod device provided by the specific embodiment of the present invention;

[0026] Figure 4 is an exploded view of the assembly of the joint piece and the fine adjustment component in the railway switch indicating rod device provided by the specific embodiment of the present invention.

[0027] In the figure:

[0028] 1 - connecting piece; 2 - joint piece; 3 - indicating rod; 4 - limiting structure; 5 - fine adjustment component;

[0029] 11 - connecting part; 111 - insulating plate; 12 - mounting part; 121 - stepped shaft; 122 - sliding bearing; 123 - baffle;

[0030] 21 - stepped hole; 22 - connecting hole;

[0031] 41 - First limiting block; 411 - Limiting groove; 42 - Second limiting block; 43 - Fastening assembly;

[0032] 431 - Locking bolt; 432 - First nut; 433 - Second nut; 434 - Locking cover; 435 - Positioning pin;

[0033] 51 - Angular contact spherical plain bearing; 52 - Adjusting nut; 53 - Collared bushing; 54 - Plain bushing; 55 - Washer;

[0034] 56 - Pin shaft;

[0035] 521 - Disc with hole; 5211 - Positioning hole; 522 - Disc with groove;

[0036] 100 - Stock rail; 200 - Switch rail. Detailed implementation mode

[0037] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Such as Figures 1 to 4As shown in the figure, this embodiment provides a railway switch indicating rod device, which includes a connecting piece 1, a joint piece 2, an indicating rod 3 and a limiting structure 4. Among them, the connecting piece 1 is configured to be connected to the switch rail 200 on one side of the stock rail 100. One end of the joint piece 2 is rotatably connected to the connecting piece 1. The indicating rod 3 is connected to the other end of the joint piece 2. The limiting structure 4 is connected to the stock rail 100 and is used to limit the indicating rod 3 in the length direction of the stock rail 100. It should be noted that the end of the indicating rod 3 away from the joint piece 2 is used to be connected to the switch machine.

[0041] The connecting piece 1 is used to be connected to the switch rail 200 on one side of the stock rail 100. One end of the joint piece 2 is rotatably connected to the connecting piece 1. The indicating rod 3 is connected to the other end of the joint piece 2. At the same time, the limiting structure 4 limits the indicating rod 3 in the length direction of the stock rail 100. When the switch rail 200 crawls (offsets) back and forth in the length direction of the stock rail 100, the switch rail 200 drives the connecting piece 1 to move, and the joint piece 2 will adaptively rotate relative to the connecting piece 1. Under the limiting action of the limiting structure 4, the indicating rod 3 will not offset in the length direction of the stock rail 100, but only offset a small distance in the vertical direction. The change of the gap inside the switch machine caused by the vertical swing of the indicating rod 3 is much smaller than the change of the gap inside the switch machine caused by the horizontal swing of the indicating rod 3. It can solve the faults of abnormal gap information inside the switch machine or even jamming caused by the crawling of the switch rail 200, which is beneficial to reducing the on-site failure rate, extending the adjustment period of the indicating gap, greatly reducing the on-site maintenance workload, and also playing a positive role in the train operation efficiency and train operation safety.

[0042] Optionally, the indicating rod 3 is connected to the joint piece 2 through a fine-tuning assembly 5. The fine-tuning assembly 5 includes an angular contact spherical plain bearing 51 and an adjusting nut 52. A stepped hole 21 is provided on the joint piece 2. The angular contact spherical plain bearing 51 is arranged in the stepped hole 21. The adjusting nut 52 is connected to the joint piece 2 and abuts against the angular contact spherical plain bearing 51. The indicating rod 3 passes through the angular contact spherical plain bearing 51 and the adjusting nut 52. There are two angular contact spherical plain bearings 51, which are connected by a washer 55 in the middle. One angular contact spherical plain bearing 51 contacts the inner end face of the stepped hole 21, and the other angular contact spherical plain bearing 51 contacts the adjusting nut 52. The adjusting nut 52 is threadedly connected to the stepped hole 21.

[0043] Optionally, the fine-tuning assembly 5 further includes a threaded shaft sleeve 53 and a non-threaded shaft sleeve 54. The threaded shaft sleeve 53 and the non-threaded shaft sleeve 54 are snap-connected and sleeved on the indicating rod 3 respectively. The angular contact spherical plain bearing 51 is sleeved on the threaded shaft sleeve 53 and the non-threaded shaft sleeve 54. The adjusting nut 52 is sleeved on the non-threaded shaft sleeve 54. The threaded shaft sleeve 53 is threadedly connected to the indicating rod 3. The threaded shaft sleeve 53 and the non-threaded shaft sleeve 54 are meshed with each other to achieve snap connection. The threaded shaft sleeve 53 has threads, and the non-threaded shaft sleeve 54 has no threads. It needs to be tightened by a nut and locked by a check nut.

[0044] Optionally, a perforated disc 521 is provided on the adjusting nut 52. A plurality of positioning holes 5211 are provided on the perforated disc 521. A connecting hole 22 is provided on the joint member 2. The connecting hole 22 is matched with one of the plurality of positioning holes 5211 through a pin shaft 56. A plurality of positioning holes 5211 are uniformly arranged circumferentially on the perforated disc 521. One positioning hole 5211 is connected to the connecting hole 22 on the joint member 2 through the pin shaft 56 to realize the anti-loosening function of the perforated disc 521. At the same time, when the angular contact spherical plain bearing 51 is worn, the adjusting nut 52 can be screwed to select a positioning hole 5211 at a suitable position and connect it to the connecting hole 22 through the pin shaft 56 to realize fine adjustment of the assembly gap and avoid loosening. In this embodiment, 24 positioning holes 5211 are provided. The adjustable angle of the adjusting nut 52 is a multiple of 360 degrees divided by 24. When the pitch of the adjusting nut 52 is 2 mm, the adjustment accuracy can reach 0.083 mm. A grooved disc 522 is also provided on the adjusting nut 52. A plurality of grooves are arranged circumferentially on the grooved disc 522 for applying a force by a screwing tool.

[0045] Optionally, the limiting structure 4 includes a first limiting block 41 and a second limiting block 42 arranged at intervals. The first limiting block 41 is clamped on one side of the basic rail 100, and the second limiting block 42 is clamped on the other side of the basic rail 100. Limiting grooves 411 are provided on both the first limiting block 41 and the second limiting block 42. The indicating rod 3 is inserted into the limiting grooves 411. Card slots are provided on both the first limiting block 41 and the second limiting block 42. The basic rail 100 is clamped between the card slots of the first limiting block 41 and the second limiting block 42.

[0046] To prevent the first limiting block 41 and the second limiting block 42 from loosening, optionally, the limiting structure 4 further includes a fastening assembly 43. One end of the fastening assembly 43 is connected to the first limiting block 41, and the other end is connected to the second limiting block 42. To ensure track insulation, insulation is provided between the first limiting block 41 and the second limiting block 42 and the indicating rod 3.

[0047] Optionally, the fastening assembly 43 includes a lockbolt 431, a first nut 432, a second nut 433, and a locknut 434. One end of the lockbolt 431 passes through the first limiting block 41 and is connected to the first nut 432. The other end of the lockbolt 431 passes through the second limiting block 42 and is connected to the second nut 433. The locknut 434 is sleeved on the lockbolt 431. A limit pin 435 is provided on the lockbolt 431. One side of the locknut 434 abuts against the first nut 432, and the other side abuts against the limit pin 435. By providing the locknut 434 and the limit pin 435, the loosening of the first nut 432 can be effectively prevented. The second nut 433 can be the nut part of the lockbolt 431.

[0048] Optionally, the connecting member 1 includes a connecting portion 11 and a mounting portion 12 which are vertically connected. The connecting portion 11 is fixedly connected to the switch rail 200. The mounting portion 12 is provided with a stepped shaft 121. One end of the joint member 2 is rotatably connected to the mounting portion 12 through the stepped shaft 121. The vertically connected connecting portion 11 and mounting portion 12 provide a swinging space for the joint member 2. The end diameter of the stepped shaft 121 is smaller than the middle diameter and is symmetrical left and right. The middle portion of the stepped shaft 121 and the U-shaped groove of the joint member 2 are in interference fit, so that the stepped shaft 121 and the joint member 2 can be approximately regarded as an integral structure, eliminating the gap and improving the assembly accuracy.

[0049] To ensure track insulation, optionally, an insulating plate 111 is clamped between the connecting portion 11 and the switch rail 200. In addition to the insulating plate 111, corresponding other insulation measures are also taken, such as sleeving an insulating tube on the bolt used to connect the switch rail 200 and the connecting portion 11.

[0050] To facilitate smooth rotation of the connecting member 1, optionally, a sliding bearing 122 is provided between the stepped shaft 121 and the connecting member 1. One end of the stepped shaft 121 is provided with a baffle 123, and the baffle 123 is connected to the connecting member 1. The middle portion of the stepped shaft 121 is used to mount the joint member 2, and the end portion of the stepped shaft 121 and the sliding bearing 122 are in clearance fit. To reduce the swinging amplitude of the joint member 2, on the one hand, the shaft-hole clearance should be controlled, and on the other hand, the length of the stepped shaft 121 should be set reasonably. The length of the stepped shaft 121 can be set appropriately longer.

[0051] In the railway switch indicating rod device provided in this embodiment, the connecting member 1 is used to connect with the switch rail 200 on one side of the stock rail 100. One end of the joint member 2 is rotatably connected to the connecting member 1, and the indicating rod 3 is connected to the other end of the joint member 2. At the same time, the limiting structure 4 limits the indicating rod 3 in the length direction of the stock rail 100. When the switch rail 200 crawls (offsets) back and forth in the length direction of the stock rail 100, the switch rail 200 drives the connecting member 1 to move, and the joint member 2 will adaptively rotate relative to the connecting member 1. Under the limiting action of the limiting structure 4, the indicating rod 3 will not offset in the length direction of the stock rail 100, but only offset a small distance in the vertical direction. The change of the notch inside the switch machine caused by the vertical swing of the indicating rod 3 is much smaller than the change of the notch inside the switch machine caused by the horizontal swing of the indicating rod 3. It can solve the faults of abnormal notch information inside the switch machine or even jamming caused by the crawling of the switch rail 200, which is beneficial to reducing the on-site failure rate, extending the adjustment period of the indicating notch, greatly reducing the on-site maintenance workload, and also playing a positive role in the train operation efficiency and train operation safety.

[0052] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A railway switch indicating rod device, characterized in that, Comprising: A connecting member (1), configured to be connected to a switch rail (200) on one side of a stock rail (100); A joint member (2), one end of the joint member (2) being rotatably connected to the connecting member (1); An indicating rod (3), connected to the other end of the joint member (2); A limiting structure (4), connected to the stock rail (100) for limiting the indicating rod (3) in the length direction of the stock rail (100); The limiting structure (4) includes a first limiting block (41) and a second limiting block (42) arranged at intervals. The first limiting block (41) is clamped on one side of the stock rail (100), and the second limiting block (42) is clamped on the other side of the stock rail (100). Limiting grooves (411) are provided on both the first limiting block (41) and the second limiting block (42), and the indicating rod (3) passes through the limiting grooves (411); The connecting member (1) includes a connecting portion (11) and a mounting portion (12) connected vertically. The connecting portion (11) is fixedly connected to the switch rail (200), and a stepped shaft (121) is provided on the mounting portion (12). One end of the joint member (2) is rotatably connected to the mounting portion (12) through the stepped shaft (121).

2. The railway switch indicating rod device according to claim 1, characterized in that, The indicating rod (3) is connected to the joint member (2) through an adjusting assembly (5). The adjusting assembly (5) includes an angular contact spherical plain bearing (51) and an adjusting nut (52). A stepped hole (21) is provided on the joint member (2). The angular contact spherical plain bearing (51) is arranged in the stepped hole (21). The adjusting nut (52) is connected to the joint member (2) and abuts against the angular contact spherical plain bearing (51). The indicating rod (3) passes through the angular contact spherical plain bearing (51) and the adjusting nut (52).

3. The railway switch indicating rod device according to claim 2, characterized in that, The adjusting assembly (5) further includes a button shaft sleeve (53) and a non-button shaft sleeve (54). The button shaft sleeve (53) is snap-connected to the non-button shaft sleeve (54) and sleeved on the indicating rod (3) respectively. The angular contact spherical plain bearing (51) is sleeved on the button shaft sleeve (53) and the non-button shaft sleeve (54), and the adjusting nut (52) is sleeved on the non-button shaft sleeve (54).

4. The railway switch indicating rod device according to claim 2, characterized in that A perforated disc (521) is provided on the adjusting nut (52). A plurality of positioning holes (5211) are provided on the perforated disc (521). A connecting hole (22) is provided on the joint member (2). The connecting hole (22) is matched with one of the plurality of positioning holes (5211) through a pin shaft (56).

5. The railway switch indicating rod device according to claim 1, characterized in that, The limiting structure (4) further includes a fastening assembly (43). One end of the fastening assembly (43) is connected to the first limiting block (41), and the other end is connected to the second limiting block (42).

6. The railway switch indicating rod device according to claim 5, characterized in that, The fastening assembly (43) includes a lock-proof bolt (431), a first nut (432), a second nut (433) and a lock-proof cover (434). One end of the lock-proof bolt (431) penetrates through the first limit block (41) and is connected to the first nut (432). The other end of the lock-proof bolt (431) penetrates through the second limit block (42) and is connected to the second nut (433). The lock-proof cover (434) is sleeved on the lock-proof bolt (431). A limit pin (435) is arranged on the lock-proof bolt (431). One side of the lock-proof cover (434) abuts against the first nut (432), and the other side abuts against the limit pin (435).

7. The railway switch indicating rod device according to claim 1, characterized in that An insulating plate (111) is clamped between the connecting portion (11) and the switch rail (200).

8. The railway switch indicating rod device according to claim 1, characterized in that, A sliding bearing (122) is arranged between the stepped shaft (121) and the connecting member (1). A baffle plate (123) is arranged at one end of the stepped shaft (121), and the baffle plate (123) is connected to the connecting member (1).

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