External locking device of turnout with precisely controllable adhesion force and adhesion force control method

Abstract

The present invention provides a turnout external locking device with precisely controllable close contact force and a close contact force control method, the locking device comprises a locking frame, a locking iron, a locking hook and a plurality of close contact adjustment parts, an adjustment gap is formed between the locking iron and the locking frame; the plurality of close contact adjustment parts are elastic parts, and some or all of the plurality of close contact adjustment parts are detachably installed in the adjustment gap in a superimposed manner; each close contact adjustment part has a predetermined rebound thrust and a predetermined compression thickness, and when the locking iron and the locking frame are mutually locked, the plurality of close contact adjustment parts are compressed to a preset state to generate a predetermined rebound thrust; when the locking hook and the locking iron are mutually locked, the combined force of the rebound thrusts of the plurality of superimposed close contact adjustment parts causes the point rail to generate a predetermined size of close contact force on the base rail. Thus, the close contact force of the point rail to the base rail can be precisely controlled within a small floating range above and below the standard predetermined value, and the close contact force of the point rail can be precisely and quantitatively controlled to ensure the safe operation of the train.

Description

Technical Field

[0001] The present invention relates to the field of railway turnout equipment, and in particular to an external turnout locking device with precisely controllable adhesion force and a method for controlling the adhesion force. Background Art

[0002] When a railway train is running or entering or leaving a station, it needs to switch to different tracks. Switches are set at the track transition points. Switches can be switched from one position to another through switch machines, thereby realizing the track change operation of the train.

[0003] A locking device is provided between the point rail and the base rail of the turnout. After the switch machine drives the point rail to move into position, the locking device locks the point rail and the base rail to ensure the safety of train operation. After the point rail and the base rail are locked, the point rail will be in close contact with the base rail. At this time, the pressure of the point rail on the base rail is the point rail adhesion force. Under ideal conditions, the cut surface of the point rail and the fitting surface of the base rail are completely matched, and the point rail and the base rail just fit but do not generate pressure. However, in actual operation, the fitting surface of the point rail and the base rail cannot be completely matched, and after the turnout has been working for a long time, the rail will be deformed due to the roadbed or other reasons. In order to ensure that the point rail and the base rail can fit completely, the point rail must be closely attached to the base rail with a certain pressure.

[0004] The adhesion force of the point rail should be within a certain range. During the operation of the locking device, if the distance between the locking iron and the locking frame of the locking device is too small, the adhesion force of the point rail may be small, which is not conducive to safety; if the distance between the locking iron and the locking frame is too large, the adhesion force of the point rail may be too large or the locking hook and the locking iron cannot be locked, which is not conducive to the roadbed and the switch machine or may cause a safety accident; in the prior art, the distance between the locking iron and the locking frame is adjusted by a flat-type adhesion adjustment piece, thereby adjusting the adhesion force of the point rail. The entire adjustment process mainly depends on the experience of the personnel, and no matter how the adjustment is made, it is impossible to achieve accurate and quantitative control of the adhesion force of the point rail, which is not conducive to the safe operation of the train. Summary of the invention

[0005] The main purpose of the present invention is to provide a turnout external locking device with precisely controllable adhesion force and a adhesion force control method, so as to at least solve the problem that the existing point rail locking device cannot achieve precise and quantitative control of the adhesion force of the point rail through a flat adhesion adjustment plate.

[0006] In order to achieve the above-mentioned purpose, according to the first aspect of the present invention, there is provided a turnout external locking device with precisely controllable close contact force, comprising: a locking frame, fixedly mounted on the outer side of the base rail; a locking iron, movably and adjustably mounted on the locking frame along the lateral direction of the base rail, the locking iron being detachably connected to the locking frame via a connecting bolt; an adjustment gap being formed between the inner side wall of the locking iron and the outer side wall of the locking frame; a locking hook, movably arranged on the locking frame; the locking hook and the point rail being hinged to each other; a close contact adjusting member, wherein the close contact adjusting members are multiple, the multiple close contact adjusting members are all elastic members, and some of the multiple close contact adjusting members are elastic members. The close fitting adjustment parts are detachably installed in the adjustment gap in a partially or completely overlapping manner; wherein each close fitting adjustment part has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the multiple close fitting adjustment parts are arranged according to non-uniform interval values; when the locking iron is mutually locked with the locking frame through the connecting bolts, the multiple superimposed close fitting adjustment parts are compressed to a preset state so that each close fitting adjustment part generates a predetermined rebound thrust; when the locking hook and the locking iron are mutually locked, the combined force of the rebound thrusts of the multiple superimposed close fitting adjustment parts causes the point rail to generate a predetermined size of close fitting force on the base rail through the locking hook.

[0007] Furthermore, the close-fitting adjustment member is a bent spring steel sheet.

[0008] Furthermore, the close-fitting adjustment member is an arc-shaped spring steel sheet.

[0009] Furthermore, when the plurality of superimposed close-fitting adjustment members are compressed to a preset state, a compression margin of a predetermined size is left.

[0010] According to a second aspect of the present invention, a method for controlling a close contact force is provided, and the method is applied to the above-mentioned external locking device of a turnout; the method comprises: S102: determining a predetermined close contact force value when the point rail is locked with the base rail and a predetermined gap value of an adjustment gap between the locking iron and the locking frame; S104: selecting part or all of a plurality of close contact adjustment parts according to the predetermined close contact force value and the predetermined gap value to be installed in the adjustment gap in a superimposed manner; S106: locking the locking iron and the locking frame with each other by connecting bolts to compress the plurality of superimposed close contact adjustment parts to a preset state so that each close contact adjustment part generates a predetermined rebound thrust; S108: when the lock hook and the locking iron are locked with each other, the close contact force value generated by the point rail on the base rail is within a predetermined floating range of the predetermined close contact force value determined in S102 by the combined force of the rebound thrusts of the plurality of superimposed close contact adjustment parts; wherein each close contact adjustment part has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the plurality of close contact adjustment parts are arranged at non-uniform interval values.

[0011] Furthermore, the close-fitting adjustment member is a bent spring steel sheet.

[0012] Furthermore, the close-fitting adjustment member is an arc-shaped spring steel sheet.

[0013] Further, in S104, the sum of the predetermined rebound thrusts of the close-fitting adjustment parts installed in the adjustment gap in a stacked manner is equal to the predetermined fitting force value; the sum of the predetermined compression thicknesses of the close-fitting adjustment parts installed in the adjustment gap in a stacked manner is greater than the predetermined gap value so that a predetermined compression margin is left when multiple stacked close-fitting adjustment parts are compressed to a preset state.

[0014] The technical solution of the present invention provides an external turnout locking device with precisely controllable close contact force, comprising a locking frame, a locking iron, a locking hook and a close contact adjusting member, wherein the locking frame is fixedly mounted on the outer side of the base rail; the locking iron is adjustably mounted on the locking frame along the lateral movement of the base rail, and the locking iron is detachably connected to the locking frame through a connecting bolt; an adjustment gap is formed between the inner side wall of the locking iron and the outer side wall of the locking frame; the locking hook is arranged on the locking frame along the movement of the base rail; the locking hook and the point rail are hinged to each other; there are a plurality of close contact adjusting members, all of which are elastic members, and some of the multiple close contact adjusting members are elastic members. Or all of them are detachably installed in the adjustment gap in a superimposed manner; each close fitting adjustment piece has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of multiple close fitting adjustment pieces are arranged according to non-uniform interval values; when the locking iron is mutually locked with the locking frame through the connecting bolts, the multiple superimposed close fitting adjustment pieces are compressed to a preset state so that each close fitting adjustment piece generates a predetermined rebound thrust; when the locking hook and the locking iron are mutually locked, the combined force of the rebound thrusts of the multiple superimposed close fitting adjustment pieces causes the point rail to generate a predetermined size of close fitting force on the base rail through the locking hook. Therefore, when adjusting the close fitting force of the point rail, the close fitting force of the point rail to the base rail can be accurately controlled within a small floating range above and below the standard preset value, realizing accurate and quantitative control of the close fitting force of the point rail, and ensuring the safe operation of the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 2 is a schematic diagram of a top view of an external locking device of a turnout with precisely controllable adhesion force, which can be selected according to an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at point A;

[0018] Figure 3 The figure is a schematic side view of the structure of an optional external locking device for a turnout with precisely controllable adhesion force according to an embodiment of the present invention.

[0019] The above drawings include the following reference numerals:

[0020] 10. Locking frame; 20. Locking iron; 21. Lock tongue; 22. Connecting plate; 30. Lock hook; 40. Close fitting adjustment piece; 50. Basic rail; 60. Point rail; 70. Locking rod; 80. Connecting bolt. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] According to the embodiment of the present invention, the turnout external locking device with precisely controllable adhesion force is as follows: Figures 1 to 3 As shown, it includes a locking frame 10, a locking iron 20, a locking hook 30 and a close fitting adjustment member 40. The locking frame 10 is fixedly mounted on the outer side of the base rail 50; the locking iron 20 is movably mounted on the locking frame 10 along the lateral direction of the base rail 50, and the locking iron 20 is detachably connected to the locking frame 10 through a connecting bolt 80; an adjustment gap is formed between the inner side wall of the locking iron 20 and the outer side wall of the locking frame 10; the locking hook 30 is movably arranged on the locking frame 10; the locking hook 30 and the point rail 60 are hinged to each other; there are multiple close fitting adjustment members 40, and the multiple close fitting adjustment members 40 are all elastic members, and some or all of the multiple close fitting adjustment members 40 are overlapped. The locking iron 20 is detachably installed in the adjustment gap in an adding manner; each close fitting adjustment member 40 has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the multiple close fitting adjustment members 40 are arranged according to non-uniform interval values; when the locking iron 20 is mutually locked with the locking frame 10 through the connecting bolt 80, the multiple superimposed close fitting adjustment members 40 are compressed to a preset state so that each close fitting adjustment member 40 generates a predetermined rebound thrust; when the locking hook 30 is mutually locked with the locking iron 20, the combined force of the rebound thrusts of the multiple superimposed close fitting adjustment members 40 causes the point rail 60 to generate a predetermined size of close fitting force on the base rail 50 through the locking hook 30. Therefore, when the close fitting force of the point rail 60 is adjusted, the close fitting force of the point rail 60 on the base rail 50 can be accurately controlled within a small floating range above and below the standard predetermined value, so that the close fitting force of the point rail 60 can be accurately and quantitatively controlled to ensure the safe operation of the train.

[0023] During specific implementation, the locking frame 10 is provided with a through hole along its thickness direction, and the locking iron 20 includes a lock tongue portion 21 and an outer connecting plate 22, the lock tongue portion 21 is installed in the through hole of the locking frame 10, and bolt holes are respectively provided at both ends of the connecting plate 22 along the width direction, and the connecting plate 22 is locked and connected to the locking frame 10 through two connecting bolts 80; a wedge-shaped protrusion is provided in the middle part of the outer side of the connecting plate 22 for locking with the lock hook 30; the lock hook 30 passes through the through hole of the locking frame 10 as a whole, and the inner end of the lock hook 30 is hinged with the point rail 60 so that the outer end of the lock hook 30 can swing up and down within a certain range, and the outer end of the lock hook 30 has a step portion matching the wedge-shaped portion of the connecting plate 22 of the locking iron 20, and after the outer end of the lock hook 30 is lifted by the locking rod 70, the step portion of the lock hook 30 and the wedge-shaped protrusion of the locking iron 20 are locked with each other.

[0024] An adjustment gap is formed between the inner wall of the connecting plate 22 and the outer wall of the locking frame 10, and a plurality of close-fitting adjustment parts 40 are detachably installed in the adjustment gap in a stacked manner. The plurality of stacked close-fitting adjustment parts 40 are compressed to a preset state by tightening the connecting bolts 80 of the connecting plate 22. In this state, the plurality of stacked close-fitting adjustment parts 40 have a compression margin of a predetermined size. When the locking hook 30 and the locking iron 20 are locked with each other, under the squeezing action of the locking hook 30, the connecting plate 22 compresses the reserved compression margin to the bottom, so that the resultant force of the rebound thrust generated by each close-fitting adjustment part 40 acts on the point rail 60 through the locking hook 30, so that the point rail 60 generates a predetermined size of close-fitting force on the base rail 50.

[0025] Optionally, the close fitting adjustment member 40 is a curved spring steel sheet, such as a wave-shaped, corrugated or arc-shaped one; preferably, Figure 2As shown, the close fitting adjustment part 40 of the embodiment of the present invention is an arc-shaped spring steel sheet. The close fitting adjustment part 40 of the embodiment of the present invention is a complete set of configurations. After the pointed rail 60 is locked, the standard close fitting force on the basic rail 50 is 200kg, and the standard adjustment gap size is 10mm. Therefore, the close fitting adjustment part 40 of the embodiment of the present invention is divided into the following specifications: the predetermined rebound thrust corresponding to the arc-shaped spring steel sheet with a thickness of 5mm is 100kg; the predetermined rebound thrust corresponding to the arc-shaped spring steel sheet with a thickness of 2.5mm is 50kg; the predetermined rebound thrust corresponding to the arc-shaped spring steel sheet with a thickness of 1.5mm is 30kg; the predetermined rebound thrust corresponding to the arc-shaped spring steel sheet with a thickness of 1mm is 20kg; the predetermined rebound thrust corresponding to the arc-shaped spring steel sheet with a thickness of 0.5mm is 20kg; The predetermined rebound thrust corresponding to the arc spring steel sheet with a thickness of 0.2mm is 10kg; the predetermined rebound thrust corresponding to the arc spring steel sheet with a thickness of 0.2mm is 4kg; the predetermined rebound thrust corresponding to the arc spring steel sheet with a thickness of 0.1mm is 2kg; the predetermined rebound thrust corresponding to the arc spring steel sheet with a thickness of 0.05mm is 1kg; and the 0.5mm, 0.2mm, 0.1mm and 0.05mm thickness specifications also have a close fitting adjustment member 40 with a planar structure, and the close fitting adjustment member 40 with a planar structure only adjusts the size of the adjustment gap and does not generate a rebound thrust. There are multiple close fitting adjustment members 40 of each specification, so that they can be freely combined and superimposed and installed according to the required size of the adjustment gap and the standard close fitting force size during superimposed installation; the lower edge of each close fitting adjustment member 40 is provided with two avoidance grooves, and the two avoidance grooves can allow the connecting bolts 80 to pass normally. The predetermined rebound thrust and thickness of the close fitting adjustment member 40 of this embodiment are not limited, and can be flexibly adjusted according to the standard close fitting force of the point rail 60 to the basic rail 50 and the different materials selected for the close fitting adjustment member 40.

[0026] The turnout external locking device with precisely controllable adhesion force of the embodiment of the present invention can be applied not only to the external locking device of the point rail, but also to the external locking device of the heart rail, and the principle and process of adhesion force control are the same.

[0027] According to a second embodiment of the present invention, a method for controlling a close contact force is provided. The method is applied to the external locking device of a turnout in the above embodiment. The method specifically comprises the following steps:

[0028] S102: Determine a predetermined adhesion force value when the point rail 60 and the base rail 50 are locked and a predetermined clearance value of an adjustment clearance between the locking iron 20 and the locking frame 10;

[0029] S104: Selecting some or all of the plurality of close fitting adjustment members 40 according to the predetermined close fitting force value and the predetermined gap value and installing them in the adjustment gap in a superimposed manner;

[0030] S106: The locking iron 20 and the locking frame 10 are locked together by connecting bolts 80 to compress the multiple superimposed close-fitting adjustment members 40 to a preset state so that each close-fitting adjustment member 40 generates a predetermined rebound thrust;

[0031] S108: When the locking hook 30 and the locking iron 20 are locked with each other, the combined force of the rebound thrusts of the multiple superimposed close-fitting adjustment parts 40 makes the close-fitting force value generated by the point rail 60 on the base rail 50 be within the predetermined floating range of the predetermined close-fitting force value determined in S102; wherein each close-fitting adjustment part 40 has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the multiple close-fitting adjustment parts 40 are arranged at non-uniform interval values.

[0032] In specific implementation, in S102, after the point rail 60 is locked, the standard adhesion force to the base rail 50 is 200 kg, and the standard adjustment gap size is 10 mm; that is, the predetermined adhesion force value is 200 kg, and the predetermined gap value is 10 mm.

[0033] In S104 , the close fitting adjusting piece 40 to be superimposed and installed is selected from the close fitting adjusting pieces 40 of all specifications, and the sum of the predetermined rebound thrust and the sum of the predetermined compression thickness of the selected close fitting adjusting piece 40 is compared with the standard predetermined close fitting force value and the standard predetermined gap value.

[0034] Specifically, the sum of the predetermined rebound thrusts of the close fitting adjustment parts 40 installed in the adjustment gap in a stacked manner is equal to the predetermined close fitting force value; the sum of the predetermined compression thicknesses of the close fitting adjustment parts 40 is greater than the predetermined gap value so that a predetermined size of compression margin is left when the multiple stacked close fitting adjustment parts 40 are compressed to a preset state. Specifically, in this embodiment, a 5mm thick arc spring steel sheet, a 2.5mm thick arc spring steel sheet, a 1.5mm thick arc spring steel sheet, and a 1mm thick arc spring steel sheet can be selected for stacking and combination so that the sum of the predetermined rebound thrusts is equal to 200kg, and when the two connecting bolts 80 of the connecting plate 22 are tightened, the four close fitting adjustment parts 40 are not completely compressed, and a certain compression margin is left; in this state, the final predetermined compression thickness after compression is slightly greater than 10mm.

[0035] In S108: when the locking hook 30 and the locking iron 20 are locked with each other, the compression margins left by the four close-fitting adjustment parts 40 will be completely compressed, so that the combined force of the rebound thrusts of the multiple superimposed close-fitting adjustment parts 40 is loaded on the point rail 60 through the locking hook 30, so that the close-fitting force generated by the point rail 60 on the basic rail 50 is within the upper and lower floating range of 200kg.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A turnout external locking device with precisely controllable adhesion force, characterized in that: include: A locking frame (10) is fixedly mounted on the outer side of the base rail (50); A locking iron (20) is adjustably mounted on the locking frame (10) along the lateral movement of the base rail (50); the locking iron (20) is detachably connected to the locking frame (10) via a connecting bolt (80); an adjustable gap is formed between the inner side wall of the locking iron (20) and the outer side wall of the locking frame (10); A lock hook (30) is movably arranged on the locking frame (10); the lock hook (30) and the point rail (60) are hinged to each other; a close fitting adjustment member (40), wherein the close fitting adjustment member (40) is a plurality, the plurality of close fitting adjustment members (40) are all elastic members, and part or all of the plurality of close fitting adjustment members (40) are detachably mounted in the adjustment gap in a stacked manner; The close fitting adjustment piece (40) is a curved arc-shaped spring steel sheet, each of the close fitting adjustment pieces (40) has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the multiple close fitting adjustment pieces (40) are arranged at non-uniform intervals; when the locking iron (20) is mutually locked with the locking frame (10) through the connecting bolt (80), the multiple superimposed close fitting adjustment pieces (40) are compressed to a preset state so that each of the close fitting adjustment pieces (40) generates a predetermined rebound thrust, and when the multiple superimposed close fitting adjustment pieces (40) are compressed to the preset state, a predetermined compression margin is left; when the locking hook (30) and the locking iron (20) are mutually locked, the combined force of the rebound thrusts of the multiple superimposed close fitting adjustment pieces (40) causes the point rail (60) to generate a predetermined close fitting force on the base rail (50) through the locking hook (30); Two avoidance grooves are formed on the lower edge of each of the close fitting adjustment members (40), and the two avoidance grooves are used to allow the connecting bolts (80) to pass through.

2. A method for controlling adhesion force, characterized in that: The control method is applied to the turnout external locking device according to claim 1; the control method comprises: S102: determining a predetermined adhesion force value when the point rail (60) and the base rail (50) are locked and a predetermined clearance value of an adjustment clearance between the locking iron (20) and the locking frame (10); S104: selecting part or all of the plurality of close fitting adjustment members (40) according to the predetermined close fitting force value and the predetermined gap value and installing them in the adjustment gap in a superimposed manner; S106: locking the locking iron (20) and the locking frame (10) together by connecting bolts (80) to compress the plurality of superimposed close fitting adjustment members (40) to a preset state so that each of the close fitting adjustment members (40) generates a predetermined rebound thrust; S108: When the locking hook (30) and the locking iron (20) are locked with each other, the combined force of the rebound thrusts of the multiple superimposed close-fitting adjustment members (40) causes the close-fitting force value generated by the point rail (60) on the base rail (50) to be within a predetermined floating range of the predetermined close-fitting force value determined in S102; The close fitting adjustment member (40) is a curved arc-shaped spring steel sheet, each of the close fitting adjustment members (40) has a predetermined rebound thrust and a predetermined compression thickness, and the predetermined rebound thrusts and predetermined compression thicknesses of the plurality of close fitting adjustment members (40) are arranged at non-uniform intervals; in S104, the sum of the predetermined rebound thrusts of the close fitting adjustment members (40) installed in the adjustment gap in a stacked manner is equal to the predetermined close fitting force value; the sum of the predetermined compression thicknesses of the close fitting adjustment members (40) installed in the adjustment gap in a stacked manner is greater than the predetermined gap value so that a predetermined compression margin is left when the plurality of stacked close fitting adjustment members (40) are compressed to a preset state.

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