Freezing clamping plate capable of reducing joint damage

Abstract

The utility model discloses a freezing splint capable of reducing joint damage, which comprises a body and two mounting hole groups arranged on the body, the two mounting hole groups are symmetrically arranged relative to a symmetric plane passing through the midpoint of the long edge of the body, the body is high in the middle and low in two ends, and the symmetric plane passes through the high point of the body. The body is divided into two half bodies which are bilaterally symmetrical by a symmetry plane, and the two mounting hole groups are respectively positioned on the two half bodies; and after two steel rails are connected by the body, the symmetric surface passes through a joint between the two steel rails. When a train runs to the joint of the steel rail, the head of the steel rail at the joint sinks under the impact of train wheels, so that the rail surface of the head of the steel rail is closer to the rail surfaces of other parts of the steel rail, the jumping of the train wheels is smaller when the train wheels pass through the joint, and the train passes through the joint of the steel rail more stably; safe operation of a train is guaranteed, the service life of the steel rail is prolonged, the replacement period of the steel rail is prolonged, and the workload of public maintenance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway track accessory technical field especially relates to a freezing clamp that can reduce joint damage. BACKGROUND

[0002] The freezing clamp is mainly used for the connection between the steel rails on the railway, and in actual operation, two steel rails are clamped between two freezing clamps, and then connected through bolts, nuts and gaskets.

[0003] The steel rail joint is one of the three weak links of the railway, and since the rail surface at the steel rail joint is discontinuous and has a gap, the driving resistance is increased by up to 25%, causing various joint diseases, and the joint at the turnout is particularly important.

[0004] Since the connection between the steel rails has a joint, which is connected by the freezing clamps clamped on both sides of the steel rails, under the impact of heavy-duty wheels, the head of the steel rail is prone to plastic deformation, causing diseases such as saddle wear, collapse, and damage to the steel rail at the joint, and thus the steel rail joint is lower than the surface of the steel rail during normal driving. Due to the existence of these line diseases, the joint state is deteriorated, which further increases the vicious cycle of the wheel on the steel rail joint disease, causing the line to be more uneven, making the train more unstable when passing through the steel rail joint. It poses a threat to the safe operation of the train, seriously reduces the service life and replacement cycle of the steel rail, and also increases the workload of the maintenance and maintenance of the work.

[0005] The patent with publication number CN219568494U discloses a reinforced freezing clamp for railway, which is provided with upper and lower reinforcing ribs parallel to each other on the outer side of the freezing clamp body along the length direction. The application solves the fracture disease caused by metal fatigue in the middle of the freezing clamp in the prior art, and can correspondingly reduce the bending stiffness of the two ends of the clamp. However, since the rail surface height of the steel rail connected by this freezing clamp does not change, the steel rail at the joint will collapse due to the impact after being impacted by the train wheel, causing unstable driving.

[0006] The patent with publication number CN202626770U discloses a steel rail field freezing joint, which is embedded in the inner side of the rail cavity and installed, and the steel rail field freezing clamp is fixedly connected with the steel rail through bolts and nuts. Since the side is rectangular, the above technical problems still exist after being connected with the steel rail. UTILITY MODEL CONTENTS

[0007] The utility model solves the technical problem of providing a freezing clamp that can reduce joint damage, which is used to solve the problem of low collapse defect caused by the impact of heavy-duty wheels on the steel rail joint of the current railway, causing unstable driving.

[0008] The utility model provides to adopt the technical scheme that

[0009] A freezing clamp plate capable of reducing joint damage, comprising a body and two mounting hole groups arranged on the body, the two mounting hole groups are symmetrically arranged through a symmetry plane of the midpoint of the long side of the body, the body is high in the middle and low at both ends, the symmetry plane passes through the high point of the body, the body is divided into two left-right symmetrical halves by the symmetry plane, and the two mounting hole groups are respectively located on the two halves.

[0010] Further, the length of the bottom edge of the half is 406 mm, the height difference between the high point of the top edge of the half and the low point of the top edge is t, and 2 mm≤t≤6 mm is satisfied.

[0011] Further, each mounting hole group comprises three mounting holes distributed along the length direction of the half, a plane perpendicular to the bottom edge of the half and passing through the mounting hole axis close to the symmetry plane, the plane intersects the bottom edge of the half at point A, the symmetry plane intersects the bottom edge of the half at point B, the distance between point A and point B is L1, and 75 mm≤L1≤78 mm is satisfied.

[0012] Further, L1=76 mm, the axes of the three mounting holes on each half are located on the same plane, and the distance between the axes of the two adjacent mounting holes in each mounting hole group is 140 mm.

[0013] Further, each half is a right-angle trapezoid with the long side on the top, and the hypotenuse of the right-angle trapezoid is located on the symmetry plane.

[0014] Further, the part of the half for cooperating with the steel rail corresponds to the shape of the side surface of the steel rail, and the top edge and the bottom edge of the half are both rounded.

[0015] Further, t=4 mm.

[0016] The utility model has the positive effects that:

[0017] The utility model discloses a body and mounting hole, the body middle is high, both ends are low, when the body connects two rails, makes the rail surface of the head of the joint of the rail higher than the rail surface of the rail away from the body. Therefore, when the train travels to the joint of the rail, under the impact of the train wheel, the head of the joint of the rail will sink, makes the rail surface of the head of the rail more close to the height of the rail surface of other parts of the rail, thereby makes the train wheel when passing through the joint of the rail bounce smaller, thereby makes the train more stable when passing through the joint of the rail, guarantees the safe operation of train, improves the service life of the rail, prolongs the replacement cycle of the rail, reduces the workload of the work maintenance and maintenance. Since the train can pass through the joint of the rail stably, can reduce the impact and vibration between the rail, thereby reducing the damage of the rail joint. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is Figure 1 the sectional view of B-B part in;

[0020] Figure 3 It is the use drawing of the utility model;

[0021] Figure 4 It is Figure 3 the sectional view of A-A part in;

[0022] Figure 5 It is the plan view of the utility model when using;

[0023] Figure 6 It is the schematic view of the freezing splint of present;

[0024] In the drawing:

[0025] 1, half body;2, mounting hole;3, bolt;4, nut;5, flat pad;6, gasket;7, rail;8, symmetry plane;9, A point;10, B point DETAILED DESCRIPTION

[0026] Figure 6 As shown in the drawing, it is a kind of freezing splint commonly used at present, its side projection is rectangle, and it includes body, and the body is two half bodies 1 of left-right symmetry, and the position of the connection of two half bodies 1 is symmetry plane 8.Each half body 1 is equipped with one mounting hole group, and each mounting hole group has three mounting holes 2, and three mounting holes 2 are distributed along the length direction of half body 1.The distance between the axis of the inner mounting hole 2 in each mounting hole group and symmetry plane 8 is B1, the distance between the axis of the middle mounting hole 2 and the axis of the other two mounting holes 2 is L2, and the distance between the axis of the outer mounting hole 2 and the edge of half body 1 is L3, then B1=76mm, L2=140mm, L3=50mm.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment makes the following improvements on the basis of the above-mentioned existing freezing splint:

[0029] The main body is generally high in the middle and low at both ends. The symmetry plane 8 passes through the highest point of the main body, and the main body is divided into two bilaterally symmetrical halves 1 by the symmetry plane 8. As a result, the two halves 1 forming the main body each form a right-angled trapezoid with the long side facing upward, and the hypotenuse of the right-angled trapezoid is located on the symmetry plane 8. Two mounting hole groups are respectively provided on the two halves 1.

[0030] like Figures 2 to 5 As shown, the shape of the portion of the half body 1 that fits with the rail 7 corresponds to the shape of the side of the rail 7, which allows the half body 1 to fit more closely with the rail 7 and increases the rigidity of the connected two rails 7. The top and bottom edges of the half body 1 are both rounded.

[0031] After the body is clamped on both sides of the rail 7, a gasket 6 is placed between the two rails 7. Then, the two rails 7 are clamped together by bolts 3 passing through the mounting holes 2 and the rails 7, flat washers 5 sleeved on the bolts 3, and nuts 5 screwed on the bolts 3. This connects the two rails 7. When connecting, the two adjacent bolts 3 are in opposite directions, making the connection more reliable.

[0032] When the main body connects the two rails 7 , the symmetry plane 8 passes through the joint between the two rails 7 , so that the head rail surface of the rail 7 at the joint is higher than the rail surface of the rail 7 away from the main body.

[0033] Therefore, when the train reaches the joint of the rails 7, under the impact of the train wheels, the head of the rail 7 at the joint will sink, making the rail surface height of the rail 7 at the joint close to the rail surface height of the rest of the rail 7, so that the train wheels will jump less when passing through the joint, and the train will be more stable when passing through the joint of the rails 7.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that:

[0036] The base length of half body 1 is 406 mm. The height difference between the highest point and the lowest point of the top edge of half body 1 is t, which satisfies t = 4 mm. When t is 4 mm, the surface of rail 7 at the joint is approximately 4 mm higher than the surface at the point away from the main body. When most trains pass through the joint, the head of the two rails 7 at the wheel impact sinks, making the surface of rail 7 at the joint flush with the surface away from the main body. This ensures optimal stability for most trains passing through the joint.

[0037] Embodiment 3

[0038] The difference between this embodiment and embodiment 2 is that:

[0039] A plane is made perpendicular to the bottom edge of the half body 1 and through the axis of the mounting hole 2 close to the symmetry plane 8, the plane intersects the bottom edge of the half body 1 at point A 9, and the symmetry plane 8 intersects the bottom edge of the half body 1 at point B 10, the distance between point A 9 and point B 10 is L1, which satisfies L1=B1. Therefore, in this embodiment, the two half bodies 1 are equivalent to being rotated counterclockwise around the B point. Figure 6 The left half body 1 in the frozen splint shown in the figure is rotated counterclockwise, and the right half body 1 is rotated counterclockwise.

[0040] Since the holes used for connecting the half body 1 and the rail 7 at the head of the rail 7 are pre-processed, the distance between the holes is fixed, and is used for connecting the half body 1 and the rail 7. Figure 6 The frozen splint shown in the figure is connected, and L1=B1 can ensure that after the utility model is connected with the rail 7, the bottom of the two rails 7 will not interfere.

[0041] The above-described embodiments are more detailed and specific, express the preferred embodiments of the utility model, and are only used to illustrate the technical ideas and characteristics of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and to implement it, but it is not limited to the utility model, and the patent range of the utility model cannot be limited by the embodiment, that is, any equivalent changes or modifications of the spirit disclosed by the utility model, within the structure of the utility model, the internal improvement of the system and the change between subsystems, etc., are still within the patent range of the utility model.

Claims

1. A frozen splint capable of reducing joint damage, comprising a body and two sets of mounting holes provided on the body, the two sets of mounting holes being symmetrically arranged with respect to a symmetry plane (8) passing through the midpoint of the long side of the body, characterized in that, The body is high in the middle and low at both ends, the symmetry plane (8) passes through the high point of the body, the body is divided into two left-right symmetrical halves (1) by the symmetry plane (8), two mounting hole groups are located on the two halves (1) respectively; when the body connects two rails (7), the symmetry plane (8) passes through the joint between the two rails (7).

2. The frozen splint of claim 1, wherein, The length of the bottom edge of the half (1) is 406 mm, the height difference between the high point of the top edge of the half (1) and the low point of the top edge is t, and 2 mm≤t≤6 mm is satisfied.

3. The frozen splint of claim 2, wherein, Each mounting hole group comprises three mounting holes (2) distributed along the length direction of the half (1), a plane perpendicular to the bottom edge of the half (1) and passing through the axis of the mounting hole (2) close to the symmetry plane (8) is drawn, the plane intersects the bottom edge of the half (1) at point A (9), the symmetry plane (8) intersects the bottom edge of the half (1) at point B (10), the distance between point A (9) and point B (10) is L1, and 75 mm≤L1≤78 mm is satisfied.

4. The frozen splint of claim 3, wherein, L1=76 mm, the axes of the three mounting holes (2) on each half (1) are located on the same plane, and the distance between the axes of the two adjacent mounting holes (2) in each mounting hole group is 140 mm.

5. The frozen splint of claim 1, wherein, Each half (1) is a right-angled trapezoid with the long edge on the top, and the hypotenuse of the right-angled trapezoid is located on the symmetry plane (8).

6. The frozen splint of claim 1, wherein, The part of the half (1) used for cooperating with the rail (7) is shaped in correspondence with the shape of the side surface of the rail (7), and the top edge and the bottom edge of the half (1) are both rounded.

7. The frozen splint of claim 2, wherein, t=4 mm.

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