Rail brace device

Abstract

The utility model discloses an easily maintain rail brace device belongs to the technical field of turnout. Including the backing plate, the iron seat, the rail brace, the II type elastic strip and two distance adjusting blocks, two distance adjusting blocks are respectively inside distance adjusting block and outside distance adjusting block, the distance adjusting block is V shape structure, and the arm thickness of its two arms is different, and the groove is established on its two arms, and its two arms are vertical arm and inclined arm respectively, for inside distance adjusting block: vertical arm is located between the inside of iron seat and the inside edge of through -hole, and its inclined arm is in abutment on the upside of the bottom plate of rail brace, for outside distance adjusting block: vertical arm is closely set up with the outside edge of through -hole and has the gap between its and the outside of iron seat, and its inclined arm is in abututment on the upside of the bottom plate, and the inside and outside two ends of II type elastic strip are pressed in the groove of inside distance adjusting block and outside distance adjusting block respectively, when initially using, the arm thickness of vertical arm and inclined arm of inside distance adjusting block is K1 and K2 respectively, and the arm thickness of vertical arm and inclined arm of outside distance adjusting block is K3 and K4 respectively, K1 is less than K2, K3 and K4.

Description

Technical Field

[0001] This utility model belongs to the field of turnout technology, and specifically relates to an easy-to-maintain rail support device. Background Technology

[0002] Currently, the unbalanced centrifugal acceleration generated when a train passes laterally through a turnout will exert a horizontal load on the turnout switch rail and transfer it to the stock rail. For turnouts with rigid clamping on the inside of the stock rail, rail bracing needs to be installed on the outside of the stock rail to enhance the stock rail's ability to resist horizontal loads and maintain structural stability.

[0003] For example, patent application number CN202411610517.2 discloses a rigid-flexible coupling type turnout vibration damping fastener system, including a steel base plate, an under-plate elastic pad layer, an adjustable height pad, turnout sleeper bolts, and an under-rail elastic pad. The under-rail elastic pad is disposed between the upper surface of the steel base plate and the rail, the under-plate elastic pad layer is disposed below the steel base plate, and the adjustable height pad is disposed below the under-plate elastic pad layer. The steel base plate has a first elongated hole at each end, and the under-plate elastic pad layer has a second elongated hole at each end. The high pad has a third elongated oval hole at each end, and the upper and lower centers of the first, second, and third elongated oval holes correspond to each other. An eccentric sleeve made of non-metallic material is inserted into the first and second elongated oval holes, and the outer diameter of the eccentric sleeve is an elongated oval that matches the inner diameter of the first elongated oval hole. The eccentricity between the center of the circular inner hole of the eccentric sleeve and the center of the first elongated oval hole is e. An anti-rotation boss is provided on the straight section at the upper end of the eccentric sleeve. A cover plate is provided above the eccentric sleeve, and the cover plate has a through hole in the center and rubber inlays on both sides of its lower end face. The washer has anti-rotation grooves on the lower end faces of the cover plates on both sides of the through hole, which are adapted to the anti-rotation boss, and the anti-rotation boss is embedded in the anti-rotation groove to form an anti-rotation function; the turnout sleeper bolt passes through the through hole in the center of the cover plate, the circular inner hole of the eccentric sleeve and the third elongated hole in sequence and is fixed to the turnout sleeper, fixing the two ends of the iron pad plate, the elastic pad layer under the plate and the height adjustment pad plate to the turnout sleeper; by rotating the eccentric sleeve 180°, the iron pad plate moves laterally by an eccentricity value e, thereby achieving track gauge adjustment; the upper surface of the iron pad plate has a K-type iron seat, the K-type A rail brace is fixed on the iron base. The mounting slot of the rail brace is an inclined surface sloping inward towards the track near the side wall of the rail. An adjusting wedge is embedded between the vertical surface of the K-shaped iron base and the side wall. The gauge can be infinitely adjusted by moving the adjusting wedge up and down. The contact surface between the rail brace and the rail has an elastic layer. A U-shaped elastic pad is fitted on the support leg of the rail brace. The elastic pad layer under the plate consists of a low-stiffness elastic pad layer that matches the size of the iron base plate and a high-stiffness elastic pad layer composite on the low-stiffness elastic pad layer. The high-stiffness elastic pad layer is located below the rail.

[0004] In existing technologies, the track gauge is infinitely adjustable by adjusting the wedge's vertical movement, and the structure is as follows:Figure 1 As shown. This structure has at least the following three problems: 1. The adjustment distance is limited; 2. When the adjusting wedge is in a high position, the contact area between the adjusting wedge and the iron seat and / or rail brace is small, resulting in poor support effect; 3. During use, the adjusting wedge may naturally move downwards, causing the top of the adjusting wedge to drop, which in turn leads to a decrease in the clamping effect of the Type II spring strip, resulting in a poorer fixing effect. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides an easy-to-maintain rail support device. By adjusting the installation direction and / or position of the adjusting block, the position of the working edge of the rail remains essentially unchanged, making adjustment convenient. Furthermore, it consistently maintains the contact area with the rail support and the iron base, and consistently maintains the installation height of the Type II elastic clip, thereby ensuring installation stability. The technical solution is as follows: This utility model embodiment provides an easy-to-maintain rail support device, including a base plate 1, an iron seat 8 fixedly mounted on the base plate 1, a rail support 2 between the base plate 1 and the rail 9, and a type II elastic strip 7 between the iron seat 8 and the rail support 2; the rail support 2 is provided with a through hole 27 for the iron seat 8 to pass through; the rail support device also includes two adjusting blocks, namely an inner adjusting block 3 and an outer adjusting block 4; the adjusting block has a V-shaped structure, with different thicknesses on its two arms, and each of its two arms is provided with a groove 10 that cooperates with the type II elastic strip 7, and its two arms are a vertical arm and an inclined arm; for the inner adjusting block 3: the vertical arm is located between the inner side of the iron seat 8 and the inner side of the through hole 27, its The tilting arm is located on the upper inner side of the vertical arm and rests against the upper side of the base plate 21 of the rail support 2; for the outer adjustment block 4: the vertical arm is set close to the outer side of the through hole 27 and there is a gap between it and the outer side of the iron seat 8, and its tilting arm is located on the upper outer side of the vertical arm and rests against the upper side of the base plate 21; the inner and outer ends of the type II elastic bar 7 are respectively pressed against the grooves 10 of the tilting arms of the inner adjustment block 3 and the outer adjustment block 4; when initially used, the arm thicknesses of the vertical arm and the tilting arm of the inner adjustment block 3 are K1 and K2, respectively, and the arm thicknesses of the vertical arm and the tilting arm of the outer adjustment block 4 are K3 and K4, respectively, where K1 is less than K2, K1 is less than K3, and K1 is less than K4.

[0006] Specifically, in this embodiment of the present invention, the iron base 8 is a K-type iron base, and the through hole 27 is a rectangular hole and is arranged perpendicular to the direction of the rail support 2.

[0007] In this embodiment of the invention, the included angle of the adjusting blocks is greater than 90°. For the inner adjusting block 3: the tilting arm is set obliquely upward from the outside to the inside; the base plate 21 and the inner side of the through hole 27 are provided with an inner inclined surface 25 that cooperates with the tilting arm, and the inner inclined surface 25 is set obliquely upward from the outside to the inside; for the outer adjusting block 4: the tilting arm is set obliquely upward from the inside to the outside; the base plate 21 and the outer side of the through hole 27 are provided with an outer inclined surface 26 that cooperates with the tilting arm, and the outer inclined surface 26 is set obliquely upward from the inside to the outside.

[0008] Specifically, in this embodiment of the invention, the slopes of the inner inclined surface 25 and the outer inclined surface 26 are both 1:9.

[0009] In this embodiment of the invention, the arm length of the adjusting block is 23-27mm, and its arm thickness is 8-15mm.

[0010] Specifically, the adjusting block in this embodiment of the utility model has five specifications, namely: Specification 1: The wall thicknesses of the two arms are 11mm and 9mm respectively; Specification 2, the wall thicknesses of the two arms are 12mm and 10mm respectively; Specification 3, the wall thicknesses of the two arms are 13mm and 8mm respectively; Specification 4, the wall thicknesses of the two arms are 14mm and 9mm respectively; Specification 5, the wall thicknesses of the two arms are 15mm and 9mm respectively.

[0011] In this embodiment of the invention, the grooves 10 on the two arms are symmetrically arranged around the angle bisector axis of the adjusting block; the grooves 10 include two arc-shaped grooves arranged side by side; the two arc-shaped grooves are located on both sides of the bolt 6 on the iron seat 8, and are symmetrically arranged around the bolt 6 axis, and are respectively located at both ends of the arm of the adjusting block; the arc-shaped grooves are arranged perpendicular to the direction of the rail support 2, and cooperate with the type II elastic bar 7, with the end away from the bolt 6 open.

[0012] In this embodiment of the utility model, the rail support 2 includes a base plate 21, a support plate 22 on the upper inner side of the base plate 21, a support part 23 on the outer lower side of the base plate 21, and two reinforcing ribs 24 on both sides of the base plate 21 and located between the base plate 21 and the support plate 22. The base plate 21 is horizontally arranged and perpendicular to the rail 9, with its lower inner end abutting against the upper side of the rail bottom of the rail 9. The through hole 27 is located in the middle of the base plate 21. The support plate 22 is vertically arranged and its upper end abuts against the lower side of the rail head of the rail 9. The support part 23 abuts against the pad plate 1 and is located outside the through hole 27. The inner ends of the two reinforcing ribs 24 are respectively connected to the two ends of the support plate 22. The reinforcing ribs 24 are vertically arranged and perpendicular to the rail 9. The type II elastic bar 7 is located between the two reinforcing ribs 24.

[0013] Specifically, for a 60kg / m track, the distance between the inner and outer sides of the through hole 27 is 58±1mm, and the distance between its other two sides is 130±1mm; the arm length of the adjusting block is 25mm, the length of the inner inclined surface 25 and the outer inclined surface 26 is 27mm, and the width of the adjusting block is 117mm.

[0014] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides an easy-to-maintain rail support device, which can ensure that the position of the working side of the rail remains basically unchanged by adjusting the installation direction and / or installation position of the adjustment block (or can be directly replaced), and the adjustment is convenient; and always ensures the contact area with the rail support and the iron seat, and always ensures the installation height of the Type II elastic bar, thereby ensuring the stability of the installation (tested on No. 12 single turnout, it can realize the adjustment of the rail and has high stability). Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an existing rail support device; Figure 2 This is a schematic diagram of the easy-to-maintain rail support device provided in this embodiment of the utility model; Figure 3 This is a cross-sectional view of the rail brace; Figure 4 This is a top view of the rail brace; Figure 5 This is a schematic diagram of the adjustable distance block; Figure 6 This is a schematic diagram of the structure of one arm of the adjusting block; Figure 7 This is a dimensioning diagram of the adjustable block.

[0016] In the diagram: 1. Pad, 2. Rail brace, 3. Inner adjusting block, 4. Outer adjusting block, 5. Limiting plate, 6. Bolt, 7. Type II spring clip, 8. Iron base, 9. Rail, 10. Groove; 21 Base plate, 22 Support plate, 23 Support section, 24 Reinforcing rib, 25 Inner slope, 26 Outer slope, 27 Through hole. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0018] Example 1 See Figure 2-7Example 1 provides an easy-to-maintain rail support device, including a base plate 1, a rail support 2, a limiting plate 5, bolts 6, a type II elastic band 7, an iron seat 8, and two adjusting blocks. The base plate 1 is horizontally positioned to support the rail 10 and the switch rail, and is used to install the rail support 2. The iron seat 8 is fixed to the base plate 1, arranged side-by-side with the rail 10, located on the outer side of the rail 10 (for ease of description, this patent defines the side furthest from the rail 10 as the outer side and the side closer to the rail 10 as the inner side). Bolts 6 (specifically, T-bolts that are vertically upwards and cooperate with the iron seat 8) are provided on the iron seat 8. The rail support 2 is located between the base plate 1 and the rail 9, supporting the outer side of the rail 9 (preventing the rail 9 from shifting outwards), and has a through hole 27 for the iron seat 8 to pass through. The type II elastic band 7 is located between the iron seat 8 and the rail support 2, used to fix the rail support 2 to the base plate 1. The limiting plate 5 is fitted onto the bolt 6. The limiting plate 5 presses against the upper side of the type II elastic bar 7. A nut is provided on the upper part of the bolt 6, and the nut is located on the upper side of the limiting plate 5 to lock the limiting plate 5.

[0019] The two adjusting blocks are an inner adjusting block 3 and an outer adjusting block 4, respectively located between the inner side of the iron base 8 and the rail support 2, and between the outer side of the iron base 8 and the rail support 2. The two adjusting blocks can be the same or different. Type II elastic clips 7 simultaneously press the two adjusting blocks firmly onto the base plate 21 of the rail support 2. The installation direction of the two adjusting blocks can be adjusted (vertical arm and inclined arm interchange), and the installation position can be adjusted (inner adjusting block 3 and outer adjusting block 4 interchange). If maintenance is required, the rail support 2 needs to be moved inward, which can be achieved by adjusting the installation position and / or installation direction to increase the thickness of the vertical arm of the inner adjusting block 3.

[0020] The adjusting block has a V-shaped structure (the included angle is preferably greater than 90°), with different thicknesses on its two arms. Both arms have grooves 10 that mate with the type II spring clip 7. The two arms are a vertical arm and an inclined arm, respectively, and are made of materials such as ZG270-500 or Q235. Specifically, the arm length of the adjusting block is 23-27mm, and its arm thickness is 8-15mm.

[0021] For the inner adjusting block 3: the vertical arm is located between the inner side of the iron base 8 and the inner side of the through hole 27. It is vertically arranged, with its inner and outer sides abutting against the inner side of the through hole 27 and the inner side of the iron base 8, respectively. A groove 10 is provided in the middle of its outer side. The tilting arm is located on the inner side of the upper end of the vertical arm, abutting against the upper side of the bottom plate 21 of the rail support 2. A groove 10 is provided in the middle of its upper side.

[0022] For the outer adjustment block 4: the vertical arm is set close to the outer side of the through hole 27, and it is set vertically. There is a gap between it and the outer side of the iron base 8, and a groove 10 is provided in the middle of its inner side. The tilting arm is located on the outer side of the upper end of the vertical arm, and its top rests against the upper side of the base plate 21. A groove 10 is provided in the middle of its upper side.

[0023] The inner and outer ends of the Type II spring bar 7 are pressed against the grooves 10 of the inclined arms of the inner adjusting block 3 and the outer adjusting block 4, respectively.

[0024] During initial use, the thicknesses of the vertical arm and tilt arm of the inner adjusting block 3 are K1 and K2, respectively, and the thicknesses of the vertical arm and tilt arm of the outer adjusting block 4 are K3 and K4, respectively. K1 is less than K2, K1 is less than K3, and K1 is less than K4. K2 and K3 may be equal or unequal, or K2 and K4 may be equal or unequal, and can be set as needed.

[0025] In this embodiment of the invention, the grooves 10 on the two arms are symmetrically arranged around the angle bisector axis of the adjusting block to ensure that after adjusting the installation direction, the corresponding ends of the Type II elastic clip 7 are located in the corresponding grooves 10. Each groove 10 includes two arc-shaped grooves arranged side-by-side. The depth of each arc-shaped groove is 2-4 mm, and its length is 34-40 mm. The bottom of each arc-shaped groove has a 3 mm flat surface, and its opening width is preferably greater than 8 mm to ensure that after adjusting the installation direction and / or adjusting the installation position, the corresponding ends of the Type II elastic clip 7 are located in the corresponding grooves 10. Specifically, the two arc-shaped grooves are located on both sides of the bolt 6 on the iron base 8, symmetrically arranged around the bolt 6 axis, and are respectively located at both ends of the adjusting block arm. The arc-shaped grooves are arranged perpendicular to the direction of the rail support 2, and cooperate with the Type II elastic clip 7, with the end furthest from the bolt 6 open.

[0026] Among them, see Figure 2-4 Due to the introduction of the adjustment block, the structure of the rail support 2 needs slight adjustments, mainly the structure of the base plate 21. The rail support 2 includes a base plate 21, a support plate 22 on the upper inner side of the base plate 21, a support part 23 on the outer lower side of the base plate 21, and two reinforcing ribs 24 on both sides of the base plate 21 and located between the base plate 21 and the support plate 22. The base plate 21 is horizontally set and perpendicular to the rail 9. Its lower inner end (with a protrusion) abuts against the upper side of the rail bottom of the rail 9, and its outer middle end has a semi-circular clearance hole (for easy operation of the fixing bolts). The through hole 27 is located in the middle of the base plate 21. It is a rectangular hole and is set perpendicular to the direction of the rail support 2. The support plate 22 is vertically set, and its upper end abuts against the lower side of the rail head of the rail 9. It is set adjacent to the rail 9. The support part 23 abuts against the pad plate 1 and is located outside the through hole 27. The inner ends of the two reinforcing ribs 24 are connected to both ends of the supporting upright plate 22 (the connection is arc-shaped). The reinforcing ribs 24 are vertically arranged, perpendicular to the track 9, and their upper sides are arranged diagonally downward from the inside to the outside, specifically as right-angled triangular plates or right-angled trapezoidal plates. Type II elastic strip 7 is located between the two reinforcing ribs 24.

[0027] Example 2 Example 2 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 1, except that the iron base 8 in this example is a K-type iron base.

[0028] Example 3 See Figure 2-7 Example 3 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 1, except that the included angle of the adjusting block in this example is greater than 90°. For the inner adjusting block 3: the tilting arm is set obliquely upward from the outside to the inside; an inner inclined surface 25 that cooperates with the tilting arm is provided on the bottom plate 21 and on the inner side of the inner side of the through hole 27, and the inner inclined surface 25 is set obliquely upward from the outside to the inside. The tilting arm rests against the inner inclined surface 25, and the length of the inner inclined surface 25 is greater than the arm length of the adjusting block.

[0029] For the outer adjusting block 4: the tilting arm is set upwards from the inside to the outside; an outer inclined surface 26 that cooperates with the tilting arm is provided on the base plate 21 and on the outer side of the outer edge of the through hole 27, and the outer inclined surface 26 is set upwards from the inside to the outside. The tilting arm rests against the outer inclined surface 26, and the length of the outer inclined surface 26 is greater than the arm length of the adjusting block.

[0030] Example 4 Example 4 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 3. The difference is that the slope of the inner inclined surface 25 and the outer inclined surface 26 in this example is 1:9, so the included angle of the two arms of the adjusting block is set accordingly.

[0031] Example 5 Example 5 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 1, except that the adjusting block in this example has five specifications, as shown in Table 1: Table 1

[0032] Where a and b are the thicknesses of the two arms of the adjustment block, respectively. The two arms of the adjustment block, located on the same side of the groove 10, are labeled a and b (labeled in the form of ab, the arm currently seen is a), labeled 10-12.

[0033] Example 6 Example 6 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 5, except that: during initial use, the inner adjusting block 3 uses size 8-13, and the arm thickness of the vertical arm is 8mm; the outer adjusting block 4 uses size 10-12. During subsequent maintenance, the arm thickness of the vertical arm of the inner adjusting block 3 can be adjusted from 8mm to 10mm to 12mm to 13mm.

[0034] Example 7 Example 7 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 5, except that: during initial use, the inner adjusting block 3 uses size 9-11, and the arm thickness of the vertical arm is 9mm; the outer adjusting block 4 uses size 9-14. During subsequent maintenance, the arm thickness of the vertical arm of the inner adjusting block 3 can be adjusted from 9mm to 11mm to 14mm.

[0035] Example 8 Example 8 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 5, except that: during initial use, the inner adjusting block 3 uses size 9-11, and the vertical arm thickness is 9mm; the outer adjusting block 4 uses size 9-14. During subsequent maintenance, it was found that the inner adjusting block 3 was severely worn, so a new inner adjusting block 3 was directly replaced (which may be the same as or different from the original inner adjusting block 3 as needed).

[0036] Example 9 Example 9 provides an easy-to-maintain rail support device, whose structure is basically the same as that of Example 1, except that: for a 60kg / m rail, the distance between the inner and outer sides of the through hole 27 is 58±1mm (i.e., width), and the distance between its other two sides is 130±1mm (i.e., length). The arm length of the adjustment block is 25mm, the length of the inner inclined surface 25 and the outer inclined surface 26 are both 27mm, and the width of the adjustment block is 117mm. The depth of the arc groove is 3mm, its length is 36mm, and the distance from its bottom to the end of the arm is 18.5mm.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An easy-to-maintain rail support device, comprising a base plate (1), an iron seat (8) fixedly mounted on the base plate (1), a rail support (2) between the base plate (1) and the rail (9), and a type II elastic bar (7) between the iron seat (8) and the rail support (2); wherein the rail support (2) is provided with a through hole (27) for the iron seat (8) to pass through; characterized in that, The rail support device also includes two adjusting blocks, namely an inner adjusting block (3) and an outer adjusting block (4); the adjusting block is a V-shaped structure with different arm thicknesses on its two arms, and both arms are provided with grooves (10) that cooperate with the Type II elastic bar (7), and the two arms are a vertical arm and an inclined arm, respectively. For the inner adjusting block (3): the vertical arm is located between the inner side of the iron seat (8) and the inner side of the through hole (27), and the tilting arm is located on the inner side of the upper end of the vertical arm and its top rests on the upper side of the bottom plate (21) of the rail support (2). For the external adjustment block (4): the vertical arm is set close to the outer side of the through hole (27) and there is a gap between it and the outer side of the iron seat (8); the tilting arm is located on the outer side of the upper end of the vertical arm and it rests against the upper side of the base plate (21). The inner and outer ends of the type II spring bar (7) are pressed against the grooves (10) of the inclined arms of the inner adjusting block (3) and the outer adjusting block (4), respectively. When used initially, the thicknesses of the vertical arm and the tilt arm of the inner adjusting block (3) are K1 and K2 respectively, and the thicknesses of the vertical arm and the tilt arm of the outer adjusting block (4) are K3 and K4 respectively, with K1 being less than K2, K1 being less than K3, and K1 being less than K4.

2. The easy-to-maintain rail support device according to claim 1, characterized in that, The iron base (8) is a K-type iron base, and the through hole (27) is a rectangular hole and is set perpendicular to the direction of the rail support (2).

3. The easy-to-maintain rail support device according to claim 2, characterized in that, The included angle of the adjusting blocks is greater than 90°. For the inner adjustment block (3): the tilting arm is set obliquely upward from the outside to the inside; the bottom plate (21) and the inner side of the inner side of the through hole (27) are provided with an inner inclined surface (25) that cooperates with the tilting arm, and the inner inclined surface (25) is set obliquely upward from the outside to the inside; For the outer adjustment block (4): the tilting arm is set obliquely upward from the inside to the outside; the bottom plate (21) is provided with an outer inclined surface (26) that cooperates with the tilting arm on the outer side of the outer side of the through hole (27), and the outer inclined surface (26) is set obliquely upward from the inside to the outside.

4. The easy-to-maintain rail support device according to claim 3, characterized in that, The slopes of the inner slope (25) and the outer slope (26) are both 1:

9.

5. The easy-to-maintain rail support device according to claim 1, characterized in that, The arm length of the adjustment block is 23-27mm, and its arm thickness is 8-15mm.

6. The easy-to-maintain rail support device according to claim 5, characterized in that, The adjustable block comes in five specifications: Specification 1: The wall thicknesses of the two arms are 11mm and 9mm respectively; Specification 2, the wall thicknesses of the two arms are 12mm and 10mm respectively; Specification 3, the wall thicknesses of the two arms are 13mm and 8mm respectively; Specification 4, the wall thicknesses of the two arms are 14mm and 9mm respectively; Specification 5, the wall thicknesses of the two arms are 15mm and 9mm respectively.

7. The easy-to-maintain rail support device according to claim 1, characterized in that, The grooves (10) on the two arms are symmetrically arranged about the angle bisector axis of the adjusting block; the grooves (10) include two arc-shaped grooves arranged side by side; the two arc-shaped grooves are located on both sides of the bolt (6) on the iron seat (8), and are symmetrically arranged about the bolt (6) axis, and are respectively located at both ends of the arm of the adjusting block; the arc-shaped grooves are arranged perpendicular to the direction of the rail support (2), and are in cooperation with the type II elastic bar (7), with the end away from the bolt (6) open.

8. The easy-to-maintain rail support device according to claim 3, characterized in that, The rail support (2) includes a base plate (21), a support plate (22) on the upper inner side of the base plate (21), a support part (23) on the outer lower side of the base plate (21), and two reinforcing ribs (24) on both sides of the base plate (21) and located between the base plate (21) and the support plate (22); the base plate (21) is horizontally arranged and perpendicular to the rail (9), with its lower inner end abutting against the upper side of the rail bottom of the rail (9); the through hole (27) is provided in the base plate. In the middle of (21), the support plate (22) is vertically arranged and its upper end abuts against the lower side of the rail head of the track (9); the support part (23) abuts against the pad (1) and is located outside the through hole (27); the inner ends of the two reinforcing ribs (24) are respectively connected to the two ends of the support plate (22), the reinforcing ribs (24) are vertically arranged and perpendicular to the track (9), and the type II elastic bar (7) is located between the two reinforcing ribs (24).

9. The easy-to-maintain rail support device according to claim 8, characterized in that, For a 60kg / m track, the distance between the inner and outer sides of the through hole (27) is 58±1mm, and the distance between its other two sides is 130±1mm; the arm length of the adjustment block is 25mm, the length of the inner inclined surface (25) and the outer inclined surface (26) is 27mm, and the width of the adjustment block is 117mm.

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