A guard rail with the effect of reducing wear and damage of the frog heel switch rail

Abstract

The present invention discloses a guard rail with the effect of reducing the wear and damage of the frog heel switch rail, which includes a toe-end wheel guiding area, a toe-end stretching guiding area, a stretching area, a heel-end stretching guiding area, and a heel-end wheel guiding area that are sequentially connected in series. The working edges of the toe-end wheel guiding area, the toe-end stretching guiding area, the heel-end stretching guiding area, and the heel-end wheel guiding area are straight structures, and the working edge of the stretching area is a broken line structure. The included angle between the working edge and the non-working edge of the toe-end wheel guiding area and the included angle between the working edge and the non-working edge of the heel-end wheel guiding area are greater than the included angle between the working edge and the non-working edge of the toe-end stretching guiding area and the included angle between the working edge and the non-working edge of the heel-end stretching guiding area. After the frog heel switch rail guard rail is set in the present invention, when the vehicle runs to the tip of the frog heel switch rail, the frog heel switch rail guard rail first contacts the back of the wheel of the lower stock of the curve, pulls the wheel set, and avoids the wheel set from moving towards the upper stock of the curve due to the action of centrifugal force, thereby avoiding the contact between the root of the wheel flange of the upper stock of the curve and the tip of the frog heel switch rail.

Description

Technical Field

[0001] The present invention relates to the technical field of fault monitoring, and particularly to a guard rail with the effect of reducing wear and damage of the heel tip rail Background Art

[0002] In recent years, during the actual operation of high-speed turnouts, the wear and damage of the heel tip rail are obvious, and there have been many cases of cracks and block shedding, resulting in early removal from service.

[0003] Through on-site investigation and theoretical analysis, it is known that when the train passes through the turnout in the reverse side direction, the wheels run along the upper curved rail, and the tip of the heel tip rail is relatively close to the end of the circular curve and still plays a guiding role, resulting in premature stress on the small cross-section below 20 mm in the top width of the heel tip rail. Under the repeated action of the train load, a fat edge gradually forms on the non-working edge top surface of the heel tip rail. The severe side wear of the small cross-section below 20 mm leads to insufficient structural strength, and gradually develops into horizontal cracks or even peeling and block shedding of the switch rail.

[0004] There is a need for a guard rail with the effect of reducing wear and damage of the heel tip rail to solve the above problems. Summary of the Invention

[0005] The present invention is to solve the problem in the prior art that when the train passes through the turnout in the reverse side direction, the wheels run along the upper curved rail, the tip of the heel tip rail is relatively close to the end of the circular curve and still plays a guiding role, resulting in premature stress on the small cross-section below 20 mm in the top width of the heel tip rail. Under the repeated action of the train load, a fat edge gradually forms on the non-working edge top surface of the heel tip rail. The severe side wear of the small cross-section below 20 mm leads to insufficient structural strength, and gradually develops into horizontal cracks or even peeling and block shedding of the switch rail. A guard rail with the effect of reducing wear and damage of the heel tip rail is provided to solve the above problems.

[0006] The present invention provides a guard rail with the effect of reducing wear and damage of the frog heel switch rail, which includes a toe-end wheel guiding area, a toe-end stretching guiding area, a stretching area, a heel-end stretching guiding area, and a heel-end wheel guiding area. The toe-end wheel guiding area, the toe-end stretching guiding area, the stretching area, the heel-end stretching guiding area, and the heel-end wheel guiding area are sequentially connected in series. The working edges of the toe-end wheel guiding area, the toe-end stretching guiding area, the heel-end stretching guiding area, and the heel-end wheel guiding area are straight structures, and the working edge of the stretching area is a broken-line structure. The included angle between the working edge and the non-working edge of the toe-end wheel guiding area and the included angle between the working edge and the non-working edge of the heel-end wheel guiding area are greater than the included angle between the working edge and the non-working edge of the toe-end stretching guiding area and the included angle between the working edge and the non-working edge of the heel-end stretching guiding area. The toe-end wheel guiding area and the heel-end wheel guiding area are used to ensure that the wheels can enter the guard rail flange groove. The toe-end stretching guiding area and the heel-end stretching guiding area are used to guide the wheels into the stretching area and play a certain stretching role at the same time. The stretching area is used to hold the wheel set and prevent the wheel set from moving towards the upper stock of the curve due to the centrifugal force, thereby avoiding the contact between the root of the wheel flange of the upper stock of the curve and the tip of the frog heel switch rail.

[0007] As a preferred embodiment, the stretching area of the guard rail with the effect of reducing wear and damage of the frog heel switch rail according to the present invention includes a toe-end functional area, a protection area, and a heel-end functional area. The working edges of the toe-end functional area, the protection area, and the heel-end functional area are not connected in series. The working edge of the protection area and the non-working edge of the protection area are parallel to each other. The included angle between the working edge of the toe-end functional area and the normal direction of the protection area and the included angle between the working edge of the heel-end functional area and the normal direction of the protection area are opposite.

[0008] As a preferred embodiment, the working edge of the toe-end functional area is connected in series with the working edge of the toe-end stretching guiding area, and the working edge of the heel-end stretching guiding area is connected in series with the working edge of the heel-end functional area.

[0009] As a preferred embodiment, the length of the toe-end wheel guiding area is L1, the sum of the lengths of the toe-end functional area and the toe-end stretching guiding area is L2, the length of the protection area is L3, the sum of the lengths of the heel-end stretching guiding area and the heel-end functional area is L4, the length of the heel-end wheel guiding area is L5, the flange groove at the end of the toe-end wheel guiding area is c1, the flange groove at the end of the toe-end functional area and the toe-end stretching guiding area is c2, the flange groove of the protection area is c3, the flange groove at the end of the heel-end stretching guiding area and the heel-end functional area is c4, and the flange groove at the end of the heel-end wheel guiding area is c5. The above numerical values satisfy the following formula,

[0010]

[0011] where V is the maximum lateral passing speed of the train.

[0012] A guard rail with the effect of reducing wear and damage of the frog nose switch rail according to the present invention, as a preferred mode, the L3 part covers the area of the cross-section of the frog nose switch rail with a top width ≤ 20 mm.

[0013] A guard rail with the effect of reducing wear and damage of the frog nose switch rail according to the present invention, as a preferred mode, c3 is such that the wheel set is sufficiently deflected towards the lower rail of the curve, so that the upper rail wheel is disengaged from the tip of the frog nose switch rail.

[0014] A guard rail with the effect of reducing wear and damage of the frog nose switch rail according to the present invention, as a preferred mode, c1 and c5 are greater than or equal to 80 mm, and c2 and c4 are greater than or equal to 65 mm.

[0015] A guard rail with the effect of reducing wear and damage of the frog nose switch rail according to the present invention, as a preferred mode, L1 and L2 are less than or equal to 200 mm.

[0016] The main functions of the L1 and L5 sections are to ensure that the wheels can enter the guard rail flange groove. The main functions of the L2 and L4 sections are to restrict the movement of the wheel set towards the lower rail of the curve. By the time of the L3 section, the wheel set has been sufficiently deflected towards the lower rail of the curve, and the upper rail wheel has been disengaged from the tip of the frog nose switch rail, thus achieving the purpose of protecting the tip of the frog nose switch rail.

[0017] The beneficial effects of the present invention are as follows:

[0018] After the frog nose switch rail guard rail is set, when the vehicle runs to the tip of the frog nose switch rail, the frog nose switch rail guard rail first contacts the back of the wheel of the lower rail of the curve, pulls the wheel set, and avoids the wheel set from moving towards the upper rail of the curve due to the centrifugal force, thus avoiding the contact between the root of the wheel flange of the upper rail wheel and the tip of the frog nose switch rail, and fundamentally avoiding the occurrence of contact damage at the tip of the frog nose switch rail. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of a guard rail with the effect of reducing wear and damage of the frog nose switch rail;

[0020] Figure 2 It is a schematic diagram of the stretching area of a guard rail with the effect of reducing wear and damage of the frog nose switch rail.

[0021] Reference Signs:

[0022] 1. Toe-end wheel guiding area; 2. Toe-end stretching guiding area; 3. Stretching area; 31. Toe-end functional area; 32. Protection area; 33. Heel-end functional area; 4. Heel-end stretching guiding area; 5. Heel-end wheel guiding area. Detailed Description of the Invention

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Embodiment 1

[0025] As Figure 1 shown, a guard rail with the effect of reducing the wear and damage of the frog heel switch rail includes a toe-end wheel guiding area 1, a toe-end stretching guiding area 2, a stretching area 3, a heel-end stretching guiding area 4, and a heel-end wheel guiding area 5. The toe-end wheel guiding area 1, the toe-end stretching guiding area 2, the stretching area 3, the heel-end stretching guiding area 4, and the heel-end wheel guiding area 5 are sequentially connected in series. The working edges of the toe-end wheel guiding area 1, the toe-end stretching guiding area 2, the heel-end stretching guiding area 4, and the heel-end wheel guiding area 5 are straight structures, and the working edge of the stretching area 3 is a broken-line structure. The included angle between the working edge and the non-working edge of the toe-end wheel guiding area 1 and the included angle between the working edge and the non-working edge of the heel-end wheel guiding area 5 are greater than the included angle between the working edge and the non-working edge of the toe-end stretching guiding area 2 and the included angle between the working edge and the non-working edge of the heel-end stretching guiding area 4. The toe-end wheel guiding area 1 and the heel-end wheel guiding area 5 are used to ensure that the wheels can enter the guard rail flange groove. The toe-end stretching guiding area 2 and the heel-end stretching guiding area 4 are used to guide the wheels into the stretching area 3 and play a certain stretching role at the same time. The stretching area 3 is used to hold the wheel set and prevent the wheel set from moving towards the upper rail of the curve due to the centrifugal force, thereby avoiding the contact between the root of the wheel flange of the upper rail of the curve and the tip of the frog heel switch rail.

[0026] As Figure 2 shown, the stretching area 3 includes a toe-end functional area 31, a protection area 32, and a heel-end functional area 33. The working edges of the toe-end functional area 31, the protection area 32, and the heel-end functional area 33 are not connected in series. The working edge of the protection area 32 and the non-working edge of the protection area 32 are parallel to each other. The included angle between the working edge of the toe-end functional area 31 and the normal direction of the protection area 32 and the included angle between the working edge of the heel-end functional area 33 and the normal direction of the protection area 32 are opposite.

[0027] The toe-end functional area 31 is connected in series with the working edge of the toe-end stretching guiding area 2, and the working edges of the heel-end stretching guiding area 4 and the heel-end functional area 33 are connected in series. The length of the toe-end wheel guiding area 1 is L1, the sum of the lengths of the toe-end functional area 31 and the toe-end stretching guiding area 2 is L2, the length of the protection area 32 is L3, the sum of the lengths of the heel-end stretching guiding area 4 and the heel-end functional area 33 is L4, the length of the heel-end wheel guiding area 5 is L5, the flange groove at the end of the toe-end wheel guiding area 1 is c1, the flange groove at the end of the toe-end functional area 31 and the toe-end stretching guiding area 2 is c2, the flange groove of the protection area 32 is c3, the flange groove at the end of the heel-end stretching guiding area 4 and the heel-end functional area 33 is c4, and the flange groove at the end of the heel-end wheel guiding area 5 is c5. The above numerical values satisfy the following formula.

[0028]

[0029] Among them, V is the maximum lateral passing speed of the train.

[0030] The L3 part covers the area of the cross heel switch rail with a top width ≤ 20 mm of the cross section. c3 is such that the wheel set is sufficiently deflected towards the lower rail of the curve so that the upper rail wheel is disengaged from the tip of the cross heel switch rail. c1 and c5 are greater than or equal to 80 mm, and c2 and c4 are greater than or equal to 65 mm. L1 and L2 are less than or equal to 200 mm.

[0031] The guard rail of the cross heel switch rail is made of channel steel with a weight of 33 kg / m.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A guard rail with the effect of reducing wear and damage at the frog heel and switch point, characterized in that: It includes a toe-end wheel guiding area (1), a toe-end stretching guiding area (2), a stretching area (3), a heel-end stretching guiding area (4) and a heel-end wheel guiding area (5). The toe-end wheel guiding area (1), the toe-end stretching guiding area (2), the stretching area (3), the heel-end stretching guiding area (4) and the heel-end wheel guiding area (5) are sequentially connected in series. The working edges of the toe-end wheel guiding area (1), the toe-end stretching guiding area (2), the heel-end stretching guiding area (4) and the heel-end wheel guiding area (5) are straight-line structures, and the working edge of the stretching area (3) is a broken-line structure. The included angle between the working edge and the non-working edge of the toe-end wheel guiding area (1) and the included angle between the working edge and the non-working edge of the heel-end wheel guiding area (5) are greater than the included angle between the working edge and the non-working edge of the toe-end stretching guiding area (2) and the included angle between the working edge and the non-working edge of the heel-end stretching guiding area (4). The toe-end wheel guiding area (1) and the heel-end wheel guiding area (5) are used to ensure that the wheel can enter the guard rail flange groove. The toe-end stretching guiding area (2) and the heel-end stretching guiding area (4) are used to guide the wheel into the stretching area (3) and play a certain stretching role at the same time. The stretching area (3) is used to hold the wheel set and prevent the wheel set from moving towards the upper stock of the curve due to the centrifugal force, thereby avoiding the contact between the root of the wheel flange of the upper stock of the curve and the tip of the crossing heel switch rail; The stretching area (3) includes a toe-end functional area (31), a protection area (32) and a heel-end functional area (33). The working edges of the toe-end functional area (31), the protection area (32) and the heel-end functional area (33) are not connected in series. The working edge of the protection area (32) and the non-working edge of the protection area (32) are parallel to each other. The included angle between the working edge of the toe-end functional area (31) and the normal direction of the protection area (32) and the included angle between the working edge of the heel-end functional area (33) and the normal direction of the protection area (32) are opposite; The working edge of the toe-end functional area (31) is connected in series with the working edge of the toe-end stretching guiding area (2), and the working edge of the heel-end stretching guiding area (4) is connected in series with the working edge of the heel-end functional area (33); The length of the toe-end wheel guiding area (1) is L1, the sum of the lengths of the toe-end functional area (31) and the toe-end stretching guiding area (2) is L2, the length of the protection area (32) is L3, the sum of the lengths of the heel-end stretching guiding area (4) and the heel-end functional area (33) is L4, the length of the heel-end wheel guiding area (5) is L5. The end flange groove of the toe-end wheel guiding area (1) is c1, the end flange groove of the toe-end functional area (31) and the toe-end stretching guiding area (2) is c2, the flange groove of the protection area (32) is c3, the end flange groove of the heel-end stretching guiding area (4) and the heel-end functional area (33) is c4, and the end flange groove of the heel-end wheel guiding area (5) is c5. The above numerical values satisfy the following formula: ； Where V is the maximum lateral passing speed of the train.

2. The guard rail according to claim 1, which has the effect of reducing the wear and damage of the frog heel switch rail, is characterized in that: The L3 part covers the area of the cross-section of the crossing heel switch rail with a top width ≤ 20 mm.

3. A guard rail having the effect of reducing wear and damage at the frog heel and switch point according to claim 1, characterized in that: The c3 satisfies the condition that the wheel set deflects sufficiently towards the lower rail of the curve so that the wheel on the upper rail disengages from the tip of the switch heel rail.

4. A guard rail having the effect of reducing the wear and damage of the frog heel switch rail according to claim 1, characterized in that: The c1 and the c5 are greater than or equal to 80 mm, and the c2 and the c4 are greater than or equal to 65 mm.

5. A guard rail having the effect of reducing the wear and damage of the frog heel switch rail according to claim 1, characterized in that: The L1 and the L2 are less than or equal to 200 mm.

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