A rail joint temporary coupling device

Abstract

The application discloses a kind of steel rail joint temporary coupling device, including the steel rail clamping plate being arranged in the both sides of the rail waist of two adjacent steel rails, the outer side of the rail joint of two adjacent steel rails is provided with intermediate clamping device, the both sides of intermediate clamping device are respectively provided with side edge clamping device, intermediate clamping device includes two intermediate clamps respectively arranged in the outer side of two steel rail clamping plates, two intermediate clamps are fixedly connected, intermediate clamps are clamped with rail bottom and steel rail clamping plate respectively, the upper portion of intermediate clamps is provided with upper pressing strip, upper pressing strip is provided with inclined plane and inclined plane is inserted into the gap between rail head and steel rail clamping plate, side edge clamping device includes two small clamps arranged in the outer side of two steel rail clamping plates and vice clamping plate arranged in the outer side of small clamp, two small clamps and vice clamping plate are fixedly connected by second long screw, small clamp is clamped with rail bottom and steel rail clamping plate respectively.The application avoids or reduces the increase of rail joint, and avoids the beating of rail joint, to prevent the damage of steel rail joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, and particularly relates to a temporary connecting device for rail joints. BACKGROUND

[0002] At present, the total length of the Mexico Maya railway line is about 1452 km, and the maximum design speed of passenger transportation is 160 km / h and the maximum design speed of freight transportation is 100 km / h. The track laying project of the Mexico Maya railway adopts the implementation scheme of track panel group laying welded seamless line, and the track panel is laid after being spiked and connected, and the long rails are welded on site. The main procedures of the track panel group laying welded seamless line are as follows: track panel spiking and connecting, track panel laying by a track panel laying machine, short rail welding into long rail, stress dispersion and locking. The process technology is simple, economical and applicable, and the existing track panel laying equipment can be used to save a large number of tool rails. However, the on-site implementation is limited by process conversion and construction space, and the welding of rails can be performed only after the track panel is laid for 1-2 km. The track laying equipment and engineering trains must pass through multiple times, and the impact and vibration of the rail ends at the rail joints are caused by the un-welded welds, which easily causes damage to the rail ends at the rail joints. When the rail joints are welded, if the rail ends are not sawn, the quality of the seamless line will be affected due to the damage of the rail ends. If the rail ends are continuously sawn, the frequent stringing of rails will bring huge additional workload, affect the work efficiency and increase the construction cost.

[0003] For the rails with holes at the rail ends, the rail joints are connected by a joint clamping plate device. This method is applied in local railways with low speed and small traffic in China. On the Mexico Maya railway, since the rails are finally welded into long rails, no bolt holes are arranged between the rails. Since there are no bolt holes, the ordinary joint clamping plate (including joint bolts) cannot be used for connection. At this time, the rail first-aid device (temporary clamping plate) is used to temporarily connect the rail joints through the first-aid device and two clamping plates (one on the left and one on the right), but the following problems exist.

[0004] 1) Although a certain connection effect is achieved, the ability to prevent the expansion of the rails is not strong (i.e., the force for clamping the rails is insufficient), so when the temperature drop is large, the rail joints are expanded, and when the construction vehicles pass through the rail joints, the wheels of the vehicles produce a downward impact on the rail ends, causing the rail ends to be stepped or plastically deformed downward. Whether the rail ends are stepped or plastically deformed downward, they need to be sawn off, otherwise the long-term service performance cannot be guaranteed.

[0005] 2) The existing first-aid device mainly plays a role in connecting the adjacent two rails, and when the train passes through, the role of the first-aid device is not fully played, and most of the train load is still borne by the cantilever end of the rail, which causes the rail to be plastically deformed vertically. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a steel rail joint temporary coupling device, which avoids or reduces the increase of the rail gap, avoids the rail gap from being stepped on, prevents the damage of the steel rail joint, reduces the construction cost and improves the construction efficiency.

[0007] To solve the above technical problems, the technical scheme of the present application is as follows: a steel rail joint temporary coupling device, which comprises steel rail clamping plates arranged on both sides of the waist of adjacent two steel rails, intermediate clamping devices arranged on the outer side of the steel rail clamping plates at the rail gap between the adjacent two steel rails, side clamping devices arranged on both sides of the intermediate clamping devices, the intermediate clamping devices comprising two intermediate clamps arranged on the outer side of the two steel rail clamping plates and fixedly connected by two first long screws on the sides, the intermediate clamps being clamped with the rail bottom and the steel rail clamping plates, an upper pressing strip being arranged above the intermediate clamps, the upper pressing strip being provided with an inclined surface which is inserted into the gap between the rail head and the steel rail clamping plate, the side clamping devices comprising two small clamps arranged on the outer side of the two steel rail clamping plates and a secondary clamping plate arranged on the outer side of the small clamps, the two small clamps and the secondary clamping plate being fixedly connected by a second long screw, and the small clamps being clamped with the rail bottom and the steel rail clamping plates.

[0008] Further improvement of the technical scheme of the present application is that the lower part of the intermediate clamp is inserted into a sliding bottom plate, the side of the intermediate clamp is provided with a jacking column, the jacking column is slidingly connected with the sliding bottom plate, the end of the sliding bottom plate is fixedly provided with an end baffle, the upper part of the jacking column is jacked by a bolt with the intermediate clamp, and the two end baffles and the jacking column are fixedly connected with the sliding bottom plate by a third long screw.

[0009] Further improvement of the technical scheme of the present application is that a V-shaped inclined surface is arranged on the steel rail clamping plate, and two wedge blocks are arranged in the V-shaped inclined surface, and the wedge blocks are threadedly fixedly connected with the intermediate clamps by wedge block limiting blocks.

[0010] Further improvement of the technical scheme of the present application is that the two wedge blocks are connected by a pressing spring.

[0011] Further improvement of the technical scheme of the present application is that the side of the intermediate clamp is provided with a jacking bolt for jacking the wedge block limiting block.

[0012] Further improvement of the technical scheme of the present application is that the surfaces of the steel rail clamping plate and the wedge block which contact with the rail waist are all provided with a rack.

[0013] Further improvement of the technical scheme of the present application is that the two ends of the steel rail clamping plate are provided with grooves which are arranged directly above the sleepers.

[0014] Further improvement of the technical scheme of the present application is that the bottom surface of the steel rail clamping plate and the rail bottom of the steel rail are tightly connected with the small clamps.

[0015] Thanks to the above technical solutions, the present application has the following technical progress:

[0016] 1. The present application uses the temporary connecting device for rail joint to avoid the increase of rail gap, prevent the damage of rail joint, reduce the construction cost, improve the construction efficiency, and is suitable for the rail welding continuous seamless line project, the long rail laying and welding continuous seamless line project, and the temporary connection of turnout rail, thus having great popularization significance.

[0017] 2. When the rail shrinks due to cold, the existence of the inclined surface between the wedge and the rail clamp plate makes the rail and the rail clamp plate shrink more and more tightly, and the serrations on the contact surface between the wedge and the rail clamp plate and the rail increase the friction between the wedge and the rail clamp plate and the rail, so that the rail clamp plate tightly pulls the adjacent two rails, thereby avoiding or reducing the increase of the rail gap.

[0018] 4. The intermediate clamping device of the present application fixes the rail clamp plate, the upper pressing strip is inserted into the gap between the rail and the rail clamp plate, the lower edge of the rail clamp plate contacts the upper surface of the small clamp protrusion, and the lower surface of the small clamp protrusion contacts the upper surface of the rail bottom, when the train passes through the rail gap, the downward force applied by the train to the rail is transmitted to the rail bottom of the two sides through the inclined surface between the upper pressing strip, the rail clamp plate and the wedge, and the upward force is transmitted to the two sides of the rail bottom through the small clamp, thereby greatly shortening the cantilever length and reducing the downward deformation of the rail gap, thereby avoiding the beating of the rail gap.

[0019] 5. The top pressing column in the present application slides in the sliding bottom plate, the upper part of the top pressing column is pressed by the bolt and the intermediate clamp, so that the force received by the top pressing column is transmitted to the sliding bottom plate, thereby greatly improving the pressing force of the intermediate clamp, and the first long screw rod on the side edge of the two intermediate clamps and the third long screw rod between the intermediate fixed end head baffle, the top pressing column and the sliding bottom plate provide pressure to the intermediate clamp, thereby increasing the clamping force of the rail clamp plate and the rail. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the application diagram of the temporary connecting device for rail joint;

[0021] Figure 2 is the structure diagram of the intermediate clamping device of the present application;

[0022] Figure 3 is the structure diagram of the intermediate clamp of the present application;

[0023] Figure 4It is the sliding bottom plate structure schematic diagram of the present application;

[0024] Figure 5 It is the wedge block structure schematic diagram of the present application;

[0025] Figure 6 It is the steel rail clamp plate structure schematic diagram of the present application;

[0026] Figure 7 It is the part schematic diagram of the intermediate clamping device and the steel rail connection of the present application;

[0027] Figure 8 It is the C-C section schematic diagram of the present application; Figure 7

[0028] Figure 9 It is the side edge clamping device overall structure schematic diagram of the present application;

[0029] Figure 10 It is the side view of the side edge clamping device and the steel rail connection of the present application;

[0030] Wherein, 1, steel rail, 2, steel rail clamp plate, 2-1, groove, 3, intermediate clamping device, 4, side edge clamping device, 5, intermediate clamp, 6, first long screw rod, 7, upper pressing strip, 8, small clamp, 9, auxiliary clamp plate, 10, second long screw rod, 11, sliding bottom plate, 12, jacking upright, 13, end head baffle, 14, third long screw rod, 15, wedge block, 16, wedge block limiting block, 17, pressing spring, 18, jacking bolt, 19, sleeper. DETAILED DESCRIPTION

[0031] The present application will be further described in detail in combination with the embodiments as follows:

[0032] As shown in the drawings, Figure 1 A kind of steel rail joint temporary coupling device, including the steel rail clamp plate 2 being arranged in the both sides of two adjacent steel rails 1 rail waist, the steel rail clamp plate 2 outside at the rail joint of two adjacent steel rails 1 is provided with intermediate clamping device 3, the intermediate clamping device 3 two sides are provided with side edge clamping device 4 respectively.

[0033] As shown in the drawings, Figures 2 to 8 ​As shown, the intermediate clamping device 3 comprises two intermediate clamps 5 arranged on the outer sides of the two rail clamps 2, which are fixedly connected by two first long screws 6 on the side edges, and the intermediate clamps 5 are clamped with the rail bottom of the rail 1 and the rail clamp 2, respectively. An upper pressing strip 7 is arranged above the intermediate clamps 5, and the upper pressing strip 7 is provided with an inclined surface which is inserted into the gap between the rail head of the rail 1 and the rail clamp 2. The lower part of the intermediate clamps 5 is inserted into a sliding base plate 11, and the side edges of the intermediate clamps 5 are provided with a tightening column 12 which is slidingly connected with the sliding base plate 11. End head baffles 13 are fixedly arranged at the ends of the sliding base plate 11, and the upper part of the tightening column 12 is tightened with the intermediate clamps 5 by means of bolts. The two end head baffles 13 and the tightening column 12 are fixedly connected with the sliding base plate 11 by means of a third long screw 14.

[0034] The tightening column 12 slides in the sliding base plate 11, and the upper part of the tightening column 12 is tightened with the intermediate clamps 5 by means of bolts, so that the force received by the tightening column 12 can be transmitted to the sliding base plate 11, thereby greatly improving the pressing force of the intermediate clamps 5. At the same time, the intermediate clamps 5 are provided with pressure by means of the two first long screws 6 on the side edges of the two intermediate clamps 5 and the third long screw 14 which fixedly connects the two end head baffles, the tightening column and the sliding base plate, thereby increasing the clamping force on the rail clamp 2 and the rail 1.

[0035] The rail clamp 2 is provided with a V-shaped inclined surface, and two wedge blocks 15 are arranged in the V-shaped inclined surface. The rail clamp 2 and the wedge blocks 15 are provided with racks on the surfaces which are in contact with the rail waist of the rail 1, thereby increasing the friction with the rail 1. The two wedge blocks 15 are connected by means of a pressing spring 17. The wedge blocks 15 are threadedly fixedly connected with the intermediate clamps 5 by means of wedge block limiting blocks 16, and the wedge block limiting blocks 16 ensure that the wedge blocks 15 do not fall off when sliding in the sliding groove. A tightening bolt 18 which tightens the wedge block limiting blocks 16 is arranged on the side edge of the intermediate clamps 5. When the intermediate clamping device 3 is installed, the tightening bolts 18 at both ends are tightened, the wedge block limiting blocks 16 are tightened, and the pressing spring 17 is compressed, thereby reducing the contact between the wedge blocks 15 and the rail 1. When the rail clamp 2 is initially installed, it is necessary to ensure that the wedge blocks 15 do not contact the rail 1, so as to ensure that the intermediate clamps 5 clamp the rail clamp 2.

[0036] When the rail 1 shrinks due to cold, the rail 1 and the rail clamp 2 become more and more tightly connected due to the inclined surface between the wedge blocks 15 and the rail clamp 2. At the same time, the surfaces of the wedge blocks 15 and the rail clamp 2 which are in contact with the rail 1 are provided with serrations, thereby increasing the friction between the wedge blocks 15, the rail clamp 2 and the rail 1, and tightly pulling the adjacent two rails 1 by the rail clamp 2, so as to avoid or reduce the increase of the rail joint. In addition, the pressing spring 17 between the two wedge blocks 15 can always tension the wedge blocks 15, and the tension of the adjacent two rails 1 becomes smaller by means of the tension of the rail clamp 2, so that the rail joint does not increase.

[0037] Railway rail fastener is a part used to connect rail 1 and sleeper 15 on the track, which functions to fix rail 1 on sleeper 15, keep track gauge and prevent longitudinal and transverse movement of rail 1 relative to sleeper 15. The present application sets recesses 2-1 on both ends of rail clamp plate 2 and the recesses 2-1 are set right above sleeper 19. The purpose of designing recesses 2-1 is to leave installation space for railway rail fastener, so that even if the rail joint temporary connecting device of the present application is installed, it will not affect the installation of railway rail fastener.

[0038] As shown in Figure 9 The side clamping device 4 includes two small clamps 8 respectively arranged on the outer sides of the two rail clamp plates 2 and a sub-clamp 9 arranged on the outer sides of the small clamps 8, and the two small clamps 8 and the sub-clamp 9 are fixedly connected by a second long screw 10. The small clamps 8 are clamped with the rail bottom of rail 1 and the rail clamp plate 2 respectively. The bottom surface of the rail clamp plate 2 and the rail bottom of rail 1 are in close contact with the small clamps 8 respectively.

[0039] In order to avoid the beating at the rail joint of adjacent rails 1, first, the intermediate clamping device 3 fixes the rail clamp plate 2, and the upper pressing strip 7 is inserted into the gap between the rail head of rail 1 and the rail clamp plate 2, so that the lower edge of the rail clamp plate 2 contacts the A1 surface of the protruding upper surface of the small clamp 8 as shown in Figure 10 , and the protruding lower surface of the small clamp A2 surface contacts the upper surface of the rail bottom of rail 1 as shown in Figure 10 When the train passes through the rail joint, the downward force exerted by the train vehicle on the rail is transmitted to the upward force at the rail bottom of the two rails 1 through the inclined surface between the upper pressing strip 7, the rail clamp plate 2 and the wedge 15 and the two small clamps 8, thereby greatly shortening the cantilever length and making the downward deformation at the rail joint smaller, thereby avoiding the beating at the rail joint.

[0040] The rail joint temporary connecting device of the present application not only avoids the beating at the rail joint, prevents damage to the rail joint, reduces construction cost and improves construction efficiency, but also is suitable for track welding continuous seamless line engineering, long rail laying and then welding continuous seamless line engineering, and temporary connection of turnout rail parts, so it has very important popularization significance.

Claims

1. A temporary connection device for rail joints, characterized in that: The system includes rail clamps (2) set on both sides of the web of two adjacent rails (1). A middle clamping device (3) is set on the outside of the rail clamps (2) at the rail joint between two adjacent rails (1). Side clamping devices (4) are set on both sides of the middle clamping device (3). The middle clamping device (3) includes two middle clamps (5) set on the outside of the two rail clamps (2). The two middle clamps (5) are fixedly connected by two first long screws (6) on the side. The middle clamps (5) are respectively clamped to the bottom of the rail (1) and the rail clamps (2). An upper pressure bar (7) is set above the middle clamps (5). The upper pressure bar (7) is provided with an inclined surface and the inclined surface is inserted into the rail. The side clamping device (4) is inserted into the gap between the rail head of the rail (1) and the rail clamp (2). It includes two small clamps (8) respectively set on the outside of the two rail clamps (2) and a secondary clamp (9) set on the outside of the small clamps (8). The small clamps (8) on both sides and the secondary clamp (9) are fixedly connected by a second long screw (10). The small clamps (8) are respectively clamped to the bottom of the rail (1) and the rail clamp (2). The rail clamp (2) is provided with a V-shaped inclined surface and two wedges (15) are provided in the V-shaped inclined surface. The wedges (15) are threadedly fixed to the middle clamp (5) through the wedge limit block (16). The two wedges (15) are connected by a compression spring (17).

2. The temporary rail joint connection device according to claim 1, characterized in that: The lower part of the intermediate caliper (5) is inserted into the sliding base plate (11). A clamping column (12) is provided on the side of the intermediate caliper (5). The clamping column (12) is slidably connected to the sliding base plate (11). An end baffle (13) is fixedly provided at the end of the sliding base plate (11). The upper part of the clamping column (12) is clamped to the intermediate caliper (5) by bolts. The end baffles (13) and the clamping column (12) at both ends are fixedly connected to the sliding base plate (11) by a third long screw (14).

3. The temporary rail joint connection device according to claim 1, characterized in that: The side of the intermediate caliper (5) is provided with a tightening bolt (18) for the tightening wedge block limit block (16).

4. A temporary rail joint connection device according to claim 1, characterized in that: The surfaces of the rail clamp (2) and wedge (15) that contact the web of the rail (1) are all provided with racks.

5. A temporary rail joint connection device according to claim 1, characterized in that: The rail clamp (2) has grooves (2-1) at both ends, and the grooves (2-1) are located directly above the sleeper (19).

6. A temporary rail joint connection device according to claim 1, characterized in that: The bottom surface of the rail clamp (2) and the bottom of the rail (1) are in close contact with the small clamp (8).

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