Rail locking device, subway track laying system

Abstract

The invention discloses a rail locking device and a subway track laying system with the rail locking device, and belongs to the technical field of railway track laying. The rail locking device of the invention comprises a device main body, which comprises an inner bushing, an outer bushing which is sleeved on the outside of the inner bushing and enclosed by the inner bushing to form a closed annular chamber a and sleeved on the outside of the rail; the inner bushing inside the closed annular chamber a is fixedly connected with wedge blocks which are inclined toward the traction tension direction and extend away from the rail at positions corresponding to the top surface and the belly surface of the rail; and a chain bushing with a chain-like structure, one side of which is formed with a first matching surface b which is fitted with the wedge block, and the other side of which is formed with a second matching surface c, so that the chain bushing is placed in the closed annular chamber a, the chain bushing follows the shape of the rail and is subjected to circumferential force, and the second matching surface c forms a surface contact with the top surface and belly surface of the rail to hold the rail, and the invention effectively solves the problem that when the rail is dragged, the rail is not firmly connected and is easy to slip off from the pulling and pushing equipment.

Description

Technical Field

[0001] The invention relates to the technical field of railway track laying, and in particular to a rail locking device and a subway track laying system. Background Art

[0002] At present, the long rail laying system mainly includes a tractor, a rail laying machine, a machine auxiliary power vehicle, a sleeper transport gantry crane, a sleeper transport vehicle, etc. During the rail laying operation, the tractor and the winch at the front end of the rail laying machine have a process of dragging the long rail. When dragging the long rail, a dragging clamp needs to be installed at the end of the rail to connect with the rail and pull the rail;

[0003] Most of the dragging clamps in the prior art use wedge blocks to clamp the rails, such as the rail dragging clamp disclosed in Chinese patent CN201722571U, which includes a left clamp, a right clamp, an inclined iron and a shackle. The left clamp and the right clamp are connected by a round pin, and the inclined iron is placed between the two clamp blocks and the rails, which plays a wedge-tightening role in the process of dragging the rails by the track laying machine. The rail dragging clamp has a simple and lightweight structure, high safety, low cost, simple operation, convenient disassembly and assembly, low labor intensity, and can be installed at any position along the length of the rail, and is suitable for various rail dragging conditions. However, the contact area between the inclined iron and the rail is small and unstable, and there is a slippage phenomenon when clamping, which poses a safety hazard. In addition, the rail surface is a non-horizontal surface, and there is a linear contact phenomenon on the surface of the wedge block, which further increases the risk of slippage.

[0004] Another example is a long rail laying device disclosed in Chinese patent CN102002897B, in which a square guide rail is provided at the rear of a crawler tractor, and two groups of long rail clamps are provided below the square guide rail. In order to make the long rail be clamped more firmly and reliably during its forward movement, a clamp is installed at the end of the long rail before the long rail clamp clamps the long rail, and a wedge block is inserted into the gap between the clamp and the long rail. The clamping principle of the clamp of this device is still to clamp the upper surface of the rail with a wedge block, and there is also a risk of slipping. Moreover, each time the wedge block is placed, it is necessary to hammer the wedge block to tighten the clamp to fix the clamp or clamp on the rail. The installation operation is relatively laborious and requires the use of a hammer.

[0005] Therefore, based on the above problems, it is necessary to provide a safe and reliable track locking device and subway track laying system. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a rail locking device and a subway track laying system to solve the problem that when the rails are dragged, the rails are not firmly connected and are easy to slip off the pulling and pushing equipment.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The track locking device disclosed in the present invention comprises:

[0009] The device body comprises an inner sleeve, an outer sleeve sleeved outside the inner sleeve and enclosed with the inner sleeve to form a closed annular chamber, and an outer sleeve sleeved outside the rail;

[0010] Wedge blocks are fixedly connected to the inner sleeve in the closed annular chamber a at positions corresponding to the top and underside of the rail and inclined toward the traction direction and extending away from the rail; and

[0011] The chain liner is constructed in a chain-like structure, with a first mating surface b formed on one side to fit the wedge block, and a second mating surface c formed on the other side, so that the chain liner is placed in the closed annular chamber a, follows the shape of the rail and is subjected to circumferential force, and the second mating surface c forms surface contact with the top surface and the ventral curved surface of the rail to hold the rail.

[0012] Furthermore, the outer surface of the chain lining is formed with an inclined surface which is opposite to the traction force and extends obliquely toward the rail, and the inclined surface is the first matching surface b;

[0013] A concave arc surface is formed in the middle of the inner surface of the chain lining, and convex arc surfaces are formed on both sides of the concave arc surface. The concave arc surface and the convex arc surface form the second matching surface c.

[0014] Furthermore, the chain lining includes an upper lining body and a side lining body, and avoidance members are arranged on both sides of the upper lining body, and the avoidance members are respectively hinged to the upper lining body and the side lining body through shafts.

[0015] Furthermore, it also includes a third matching surface d formed on the outer bushing, and contacts with the bottom surface of the rail through the third matching surface d.

[0016] Furthermore, a rolling body with an axis perpendicular to the traction tension direction is mounted on the third matching surface d, and the rolling body is in rolling contact with the lower surface of the rail.

[0017] Furthermore, the outer bushing is provided with a slot connected to the inner bushing along a direction perpendicular to the length of the rail, and the outer bushing is located at the top end of the inner bushing and is plugged and unplugged with a pin.

[0018] Furthermore, the inner sleeve or the outer sleeve is fixedly connected with a hook structure for providing a connection interface.

[0019] Further, it comprises: two symmetrically arranged device bodies; and

[0020] A tensioner capable of extending or retracting;

[0021] The top end of the inner sleeve is provided with a base connected to the tensioner, so that the tensioner is connected between the two device bodies to perform a contraction action and can drive the two device bodies to be locked on the rail, so as to push and pull the rail through the rail locking device.

[0022] The present invention discloses a subway track laying system, comprising: a tractor, a track laying host and the above-mentioned track locking device;

[0023] A winch is provided on the track-laying main machine, and the winch and the tractor are connected with the track-locking device to provide traction.

[0024] Furthermore, the rail locking device also includes a position detection switch for contacting the rail;

[0025] The position detection switch is fixedly connected to the inner bushing or the outer bushing;

[0026] The control system of the track laying host is connected to the position detection switch circuit.

[0027] In the above technical solution, the rail locking device and subway track laying system provided by the present invention have the following beneficial effects:

[0028] The rail locking device designed by the present invention comprises an inner bushing and an outer bushing, which enclose a closed annular chamber a, wherein the inner bushing is provided with a chain bushing, and a force is applied to the liner chain through a wedge block, so that the liner chain is flexibly wrapped around the top of the rail, and forms a surface contact with the top surface and the belly curved surface of the rail to hold the rail tightly, so that the rail locking device can stably and reliably self-lock on the rail;

[0029] The invention discloses a subway track laying system, which has the above-mentioned track locking device, and thus has the same beneficial effects as the track locking device. At the same time, the track laying system effectively improves the reliability of the track laying system and ensures safe production through the track locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is an axonometric diagram of the track locking state of the track locking device disclosed in the present invention;

[0032] Figure 2 It is an axonometric diagram of the rail locking device disclosed in the present invention in a state where the rails are removed;

[0033] Figure 3It is a front full cross-sectional view of the rail locking device disclosed in the present invention;

[0034] Figure 4 It is a full cross-sectional view of the left side of the rail locking device disclosed in the present invention;

[0035] Figure 5 It is an axonometric view of the inner sleeve of the rail locking device disclosed in the present invention;

[0036] Figure 6 It is an axonometric view of the lining chain of the rail locking device disclosed in the present invention;

[0037] Figure 7 It is a front view of the lining chain of the rail locking device disclosed in the present invention;

[0038] Figure 8 It is an axonometric diagram of another embodiment of the track locking device disclosed in the present invention;

[0039] Fig. 9 It is a front full cross-sectional view of another embodiment of the track locking device disclosed in the present invention.

[0040] Description of reference numerals:

[0041] 10. Device body; 11. Inner bushing; 111. Hanging seat; 12. Outer bushing; 121. Slot; 122. Spare hole; 13. Wedge; 14. Chain bushing; 141. Upper lining; 142. Side lining; 143. Avoidance member; 144. Inclined surface; 145. Concave arc surface; 146. Convex arc surface; 15. Rolling element; 16. Latch;

[0042] 20. tensioner; sleeve 21; connecting rod 22;

[0043] 30. Rails;

[0044] a, closed annular chamber; b, first mating surface; c, second mating surface; d, third mating surface. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] Figure 1 It is an axonometric drawing of the locking state of the locking device;

[0047] Figure 2 Axonometric drawing of the rail-removing state for the rail-locking device;

[0048] A track locking device is invented, comprising: a device body 10;

[0049] The device body 10 comprises an inner bushing 11, an outer bushing 12 which is sleeved outside the inner bushing 11 and encloses the inner bushing 11 to form a closed annular chamber a and is sleeved outside the rail 30;

[0050] The inner lining 11 of the closed annular chamber a is fixedly connected with wedge blocks 13 which are inclined toward the traction direction and extend away from the rail 30 at the top and bottom surfaces of the rail 30; and

[0051] The chain liner 14 is constructed in a chain-like structure, with a first mating surface b formed on one side to fit with the wedge block 13, and a second mating surface c formed on the other side, so that the chain liner 14 is placed in the closed annular chamber a, the chain liner 14 follows the shape of the rail 30 and is subjected to circumferential force, and the second mating surface c forms a surface contact with the top surface and the ventral curved surface of the rail 30 to hold the rail 30.

[0052] Specifically, in the structure, the inner bushing 11 and the outer bushing 12 form the main body of the rail locking device, the cross section of the rail 30 is configured as an I-shaped structure, and the top surface and the belly surface of the rail 30 are both curved surfaces formed by a curved transition connection;

[0053] The inner bushing 11 is constructed in a U-shaped structure with an open bottom, and cooperates with the outer bushing 12 up and down to enclose and cover the rail 30, so that the rail locking device can be used at any time whether in the middle or at the end of the rail 30. The inner bushing 11 and the outer bushing 12 enclose a closed annular chamber a, and the inner bushing 11 is fixedly connected with a wedge block 13 at the position of the top surface and the belly surface of the rail 30 inside the closed annular chamber a. The inclined surface of the wedge block 13 extends upwardly in an inclined direction toward the traction tension, and applies a force toward the chain bushing 14 through the inclined surface 144;

[0054] The chain lining 14 is constructed in a chain-like structure and is used to flexibly cover the top of the rail 30. A first matching surface b is formed on the outside of the chain lining 14 and a second matching surface c is formed on the inside. The area of ​​the second matching surface c is larger than that of the first matching surface b. The first matching surface b is an inclined surface 144 for fitting with the wedge block 13, and the second matching surface c is a curved surface adapted to the shape of the top surface and the belly surface of the rail 30. When the chain lining 14 is set on the top of the rail 30, the chain lining 14 can make surface contact with the shape through the second matching surface c. When in use, a traction force is provided to the inner lining 11 or the outer lining 12 of the rail locking device, and the wedge block 13 and the outer lining 12 provide pressure on the chain lining 14 at the top, side and bottom of the rail 30, so that the lining chain forms a surface contact with the top surface and belly surface of the rail 30 through the second matching surface c to hold the rail 30 tightly, so that the rail locking device can stably and reliably self-lock on the rail 30.

[0055] Figure 3 This is a full cross-sectional view of the rail locking device from the front;

[0056] Figure 4 It is a full sectional view of the left side of the rail locking device;

[0057] The outer surface of the chain liner 14 is formed with an inclined surface 144 which is opposite to the traction force and extends obliquely toward the rail 30. The inclined surface 144 is the first mating surface b. The middle part of the inner surface of the chain liner 14 is formed with a concave arc surface 145, and convex arc surfaces 146 are formed on both sides of the concave arc surface 145. The concave arc surface 145 and the convex arc surface 146 form a second mating surface c.

[0058] Figure 6 This is the axonometric view of the lining chain of the rail locking device;

[0059] Figure 7 This is the front view of the lining chain of the track locking device;

[0060] The chain lining 14 includes an upper lining body 141 and a side lining body 142. Avoidance members 143 are provided on both sides of the upper lining body 141. The avoidance members 143 are respectively hinged to the upper lining body 141 and the side lining body 142 through shafts. The avoidance member 143 is a plate-like structure, which can be a linear straight plate or an arc-shaped curved plate, which can avoid the convex positions on both sides of the head of the rail 30 and send the side lining body 142 to the belly of the rail 30 and contact the belly surface.

[0061] See also Figure 3 , 4 As shown, the rail locking device further includes a third matching surface d formed on the outer bushing 12 , and the third matching surface d is in contact with the ground of the rail 30 .

[0062] Preferably, a rolling body 15 with an axis perpendicular to the direction of traction tension is installed on the third mating surface d, and the rolling body 15 is in rolling contact with the lower surface of the rail 30, thereby reducing the friction between the third mating surface d and the ground of the rail 30, and through the contact between the third mating surface d and the bottom surface of the rail 30, the chain liner 14 installed in the closed annular chamber a is subjected to balanced and stable force, ensuring that the concave arc surface 145 in the middle of the inner surface of the chain liner 14 can always maintain abutment. In this structure, the rolling body 15 can be a number of rollers or rollers rotatably connected to the outer bushing 12 through an axis, or other rolling bodies 15 that can achieve rolling friction.

[0063] See also Figure 2 , 4 As shown, the outer bushing 12 is provided with a slot 121 which is plugged into the inner bushing 11 along a direction perpendicular to the length of the rail 30. The outer bushing 12 is located at the top of the inner bushing 11 and is plugged and connected with a pin 16. During assembly, the inner bushing 11 is prevented from being separated from the outer bushing 12 by the pin 16. When subjected to traction tension, the top of the inner bushing 11 is pressed by the pin 16. Moreover, the outer bushing 12 prevents the inner bushing 11 from moving in the direction of tension through the side wall of the slot 121, thereby preventing the inner bushing 11 from being separated from the outer bushing 12 from the side of the outer bushing 12, so that the inner bushing 11 is stably installed in the outer bushing 12.

[0064] See also Figure 2As shown, the inner sleeve 11 or the outer sleeve 12 is fixedly connected with a hook structure for providing a connection interface, which is a hanger 111 with a through hole fixedly connected to the inner sleeve 11 or the outer sleeve 12, or a combination of the hanger 111 fixedly connected to the top of the inner sleeve 11 and spare holes 122 that can be opened on both sides of the outer sleeve 12, which is connected to external equipment through the connection interface to implement traction.

[0065] Figure 8 It is an axonometric view of another embodiment of the track locking device;

[0066] Fig. 9 It is a front full cross-sectional view of another embodiment of the rail locking device;

[0067] The track locking device comprises: two symmetrically arranged device bodies 10; and

[0068] A tensioner 20 capable of extending or contracting;

[0069] A base connected to the tensioner 20 is provided at the top of the inner sleeve 11, so that the tensioner 20 is connected between the two device bodies 10 to perform a contraction action and can drive the two device bodies 10 to be locked on the rail 30, so as to push and pull the rail 30 through the rail locking device.

[0070] In this structure, the two device bodies 10 of the rail locking device are symmetrically installed on the rail 30 for synchronous use, and the two device bodies 10 are connected by the tensioner 20. The inclined surface 144 of the wedge block 13 on the inner bushing 11 is inclined toward the tension direction of the tensioner 20 and extends away from the rail 30. That is to say, the tensioner 20 provides traction tension to the two device bodies 10 respectively, driving the inner bushing 11 and the outer bushing 12 to drive the chain bushing 14 to hold the rail 30 tightly, thereby realizing the rail 30 of the two device bodies 10 being independently self-locked. At this time, applying traction tension to the rail locking device can drag the rail 30, and applying thrust can push the rail 30, that is, the rail locking device can withstand pushing and pulling forces at the same time;

[0071] The tensioner 20 is a telescopic rod with a spiral drive, which includes a sleeve 21. Connecting rods 22 are threadedly connected at both ends of the sleeve 21. The ends of the connecting rods 22 are connected to the base of the inner sleeve 11 through an axis. When in use, the sleeve 21 is driven to rotate, and the two connecting rods 22 are relatively contracted or extended. When contracted, a traction force is applied to the device body 10 to make the chain lining 14 hold the rail 30 tightly. When extended, a thrust is applied to the device body 10 to separate the chain lining 14 from the inner sleeve 11 and the outer sleeve 12.

[0072] The tensioner 20 is a cylinder, one end of which is connected to the base of the inner sleeve 11 of one of the device bodies 10 through a shaft, and the other end is connected to the base of the inner sleeve 11 of another device body 10 through a shaft. When the cylinder is extended or contracted, it can also achieve thrust on the device body 10, so that the chain liner 14 is separated from the inner liner 11 and the outer liner 12, and a pulling force is applied to the device body 10, so that the chain liner 14 holds the rail 30 tightly.

[0073] The base on the inner sleeve 11 can be a hanging seat 111 of a hook structure, which is convenient for using the device body 10 alone or for using two device bodies 10 simultaneously.

[0074] A subway track laying system is invented, which comprises: a tractor, a track laying main machine and the above-mentioned track locking device;

[0075] A winch is provided on the track laying main machine, and the winch and the tractor are connected with the track locking device to provide traction.

[0076] The rail locking device also includes a position detection switch for contacting the rail 30;

[0077] A position detection switch is fixedly connected to the inner bushing 11 or the outer bushing 12;

[0078] The control system of the track laying host is connected to the position detection switch circuit. Specifically, a position detection switch is fixedly connected to the side of the inner sleeve 11 or the outer sleeve 12. The position detection switch includes contacts that contact the rail 30. When in use, when the device body 10 is locked on the rail 30, the contacts of the position detection switch remain in contact with the rail 30, and the control system of the track laying host operates normally. When the contacts of the position detection switch are separated from the rail 30, the warning light of the control system of the track laying host alarms to indicate whether the track locking device is in use.

[0079] In the above technical scheme, the rail locking device designed by the present invention has a main body including an inner bushing and an outer bushing, which enclose a closed annular chamber a, and a chain bushing is provided in the inner bushing, and a force is applied to the liner chain through a wedge block, so that the liner chain is flexibly wrapped on the top of the rail, and forms a surface contact with the top surface and the belly curved surface of the rail to hold the rail tightly, so that the rail locking device can stably and reliably self-lock on the rail;

[0080] In the above technical scheme, a subway track laying system disclosed in the present invention has the above-mentioned track locking device, and thus has the same beneficial effects as the track locking device. At the same time, the track laying system effectively improves the reliability of the track laying system and ensures safe production through the track locking device.

[0081] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rail locking device, characterized in that: include: The device body (10) comprises an inner sleeve (11), an outer sleeve (12) sleeved outside the inner sleeve (11) and enclosed with the inner sleeve (11) to form a closed annular chamber a, and sleeved outside the rail (30); The inner sleeve (11) in the closed annular chamber (a) is fixedly connected to the top and bottom surfaces of the rail (30) corresponding to the rail (30) with wedge blocks (13) that are inclined in the direction of the pulling force and extend away from the rail (30); and A chain liner (14) is constructed in a chain-like structure, with a first mating surface b formed on one side to fit with the wedge block (13), and a second mating surface c formed on the other side, so that the chain liner (14) is placed in the closed annular chamber a, the chain liner (14) follows the shape of the rail (30) and is subjected to circumferential force, and the second mating surface c forms a surface contact with the top surface and the ventral curved surface of the rail (30) to hold the rail (30); Wherein, the track locking device has two symmetrically arranged device bodies (10); as well as A tensioner (20) capable of extending or contracting; A base connected to the tensioner (20) is provided at the top end of the inner sleeve (11), so that the tensioner (20) is connected between the two device bodies (10) to perform a contraction action and can drive the two device bodies (10) to be locked on the rail (30), so as to push and pull the rail (30) through the rail locking device.

2. The rail locking device according to claim 1, It is characterized by: The outer surface of the chain lining (14) is formed with an inclined surface (144) which is opposite to the traction force and extends obliquely toward the rail (30), and the inclined surface (144) is a first matching surface b; A concave arc surface (145) is formed in the middle of the inner surface of the chain liner (14), and convex arc surfaces (146) are formed on both sides of the concave arc surface (145). The concave arc surface (145) and the convex arc surface (146) form the second matching surface c.

3. The rail locking device according to claim 2, It is characterized by: The chain lining (14) comprises an upper lining body (141) and a side lining body (142). Avoidance members (143) are arranged on both sides of the upper lining body (141). The avoidance members (143) are respectively hinged to the upper lining body (141) and the side lining body (142) through shafts.

4. The rail locking device according to claim 1, characterized in that ； It also includes a third matching surface d formed on the outer bushing (12), and is in contact with the bottom surface of the rail (30) through the third matching surface d.

5. The rail locking device according to claim 4, It is characterized by: A rolling body (15) with an axis perpendicular to the traction tension direction is mounted on the third matching surface d, and the rolling body (15) is in rolling contact with the lower surface of the rail (30).

6. The rail locking device according to claim 1, It is characterized by: The outer bushing (12) is provided with a slot (121) for plugging into the inner bushing (11) along a direction perpendicular to the length of the rail (30); the outer bushing (12) is located at the top end of the inner bushing (11) and is pluggably connected to a latch (16).

7. The rail locking device according to claim 1, characterized in that; The inner sleeve (11) or the outer sleeve (12) is fixedly connected with a hook structure for providing a connection interface.

8. A subway track laying system, characterized in that: include: A tractor, a track-laying main machine, and a track-locking device according to any one of claims 1 to 7; A winch is provided on the track-laying main machine, and the winch and the tractor are connected with the track-locking device to provide traction.

9. A subway track laying system according to claim 8, characterized in that ； The rail locking device also includes a position detection switch for contacting the rail (30); The position detection switch is fixedly connected to the inner bushing (11) or the outer bushing (12); The control system of the track laying host is connected to the position detection switch circuit.

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