Shield launching horizontal transportation small-size traction device

Abstract

The utility model discloses a shield launching horizontal transportation small-size traction device, and belongs to the technical field of tunnel engineering shield construction. The traction device comprises a forward traction rope which is fixedly arranged below one end, close to the shield tunneling machine trolley, of the slag car and is wound on the shield tunneling machine trolley; the backward pulling rope is fixedly arranged below one end, far away from the shield tunneling machine trolley, of the slag car; the backward pulling rope is arranged at one end, corresponding to the backward pulling rope, of the slag car, is connected with one end, far away from the shield tunneling machine trolley, of the forward pulling rope and one end, far away from the shield tunneling machine trolley, of the backward pulling rope and is used for retracting and releasing the forward pulling rope and the backward pulling rope; and the double-rope winch is used for enabling the slag car to move forwards or backwards on the track. According to the shield launching horizontal transportation small-size traction device, the advancing traction rope and the retreating traction rope are wound and unwound through the double-rope winch, advancing and retreating of the slag car on the track can be achieved, the moving range of the slag car on the track is not limited any more, and therefore normal transportation and outward transportation of slag are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of shield construction, and particularly relates to a small-size traction device for horizontal transportation of shield launching. BACKGROUND

[0002] In the process of shield tunnel construction, horizontal transportation of the shield is an important link of muck transportation, and plays a key role in guaranteeing construction progress and efficiency. At present, the horizontal transportation of the shield is usually achieved by adopting a power locomotive to pull a muck car to realize the muck transportation function. This traditional traction mode can better meet the transportation demand in the general shield construction environment, and the power locomotive can efficiently pull the muck car to run on the track to complete the muck transportation work.

[0003] However, in the process of shield split launching construction, especially in the process of split launching construction in a narrow space, since the power locomotive has a large size and a long length, the power locomotive will occupy a large hoisting space in the narrow launching space. The hoisting operation is an important part of the shield split launching construction, and the occupation of the hoisting space by the power locomotive will not only limit the moving range of the muck car, so that the pulled muck car cannot reach the predetermined hoisting position, but also affect the normal transportation and external transportation of the muck. Once the muck cannot be transported in time, the normal tunneling work of the shield machine trolley will be affected, the construction progress will be hindered, and the construction cost will be increased.

[0004] Therefore, the application provides a small-size traction device for horizontal transportation of shield launching to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides a small-size traction device for horizontal transportation of shield launching, and aims to solve the problems that, in the split launching of the existing shield in a narrow space, the power locomotive occupies the hoisting space due to the large size, the muck car cannot move to reach the predetermined position, and the muck transportation and external transportation are affected.

[0006] To achieve the above object, the application provides the following technical scheme: a small-size traction device for horizontal transportation of shield launching, comprising a forward traction rope fixedly arranged at a position below one end of a muck car close to a shield machine trolley for winding around the shield machine trolley, a backward traction rope fixedly arranged at a position below one end of the muck car away from the shield machine trolley, and a double-rope winch arranged at one end of the muck car corresponding to the backward traction rope and connected with one end of the forward traction rope and the backward traction rope away from the shield machine trolley for winding and unwinding the forward traction rope and the backward traction rope, so that the muck car moves forward or backward on the track.

[0007] The traction device further comprises a guide assembly arranged at the end of the shield tunneling machine trolley away from the slag car for guiding the advancing traction rope; through the winding and unwinding operations of the advancing traction rope and the retreating traction rope by the double-rope winch, the advancing and retreating of the slag car on the track can be easily realized; when the slag car needs to advance, the double-rope winch retracts the advancing traction rope and loosens the retreating traction rope; when the slag car needs to retreat, the double-rope winch retracts the retreating traction rope and loosens the advancing traction rope. Compared with the traditional traction of the power locomotive, this bidirectional flexible control mode has a small device size and does not occupy a large amount of space, and is especially suitable for shield split launching construction in a narrow space, so that the moving range of the slag car on the track is no longer limited, the slag car can smoothly reach the predetermined hoisting position, thereby ensuring the normal transportation and external transportation of the slag, and avoiding the problem of construction stagnation caused by the failure of the slag car to be in place; meanwhile, the arrangement of the guide assembly can change the stress direction of the advancing traction rope, so that the force applied by the advancing traction rope to the slag car is always along the predetermined direction, ensuring that the slag car advances or retreats on the track along the correct path, and avoiding problems such as winding and jamming of the advancing traction rope, thereby ensuring the continuity and stability of the entire transportation system.

[0008] Preferably, in order to ensure the use effect of the advancing traction rope and the retreating traction rope, the advancing traction rope and the retreating traction rope are both steel wire ropes; since the steel wire rope has the advantages of high strength, wear resistance and good tensile performance, the use of the steel wire rope as the advancing traction rope and the retreating traction rope can withstand a large traction force when the slag car is being towed, and will not easily break or be damaged. At the same time, the steel wire rope has good flexibility and can be smoothly wound and unwound on the double-rope winch, thereby ensuring the normal operation of the traction device and improving the transportation efficiency.

[0009] Preferably, in order to realize the winding and unwinding of the advancing traction rope and the retreating traction rope, the double-rope winch comprises a support seat fixedly arranged at the end of the slag car away from the shield tunneling machine trolley, two drum reels symmetrically and rotatably connected to the support seat and in connection with each other, and a motor fixedly installed on the support seat for driving one of the drum reels to rotate, one end of the retreating traction rope away from the slag car is wound and connected to one of the drum reels, one end of the advancing traction rope away from the slag car is wound and connected to the other drum reel, and the winding directions of the advancing traction rope and the retreating traction rope are opposite; one of the drum reels is driven to rotate by the motor, and the winding and unwinding of the advancing traction rope and the retreating traction rope are realized by the synchronous rotation of the two drum reels, thereby realizing the advancing and retreating of the slag car. The operation is simple and fast and is not limited by a narrow space.

[0010] Preferably, in order to facilitate the forward traction rope to be loosened and lengthened along with the advance of the shield machine trolley, a clutch is arranged between the two winding drums, and the two winding drums are fixedly connected through the clutch. The clutch is designed to allow the two winding drums to be disassembled and assembled. When the shield machine trolley advances, the clutch can be loosened, and the forward traction rope can freely rotate on the connected winding drum, thereby being loosened to adapt to the advance of the shield machine trolley, ensuring that the traction device and the shield machine trolley move in coordination and that the traction device can continue to be used.

[0011] Preferably, in order to guide the forward traction rope, the guide assembly comprises a mounting seat symmetrically and fixedly mounted on the bottom of the end of the shield machine trolley away from the slag car, a rotating shaft rotatably connected between the two mounting seats, and a pulley fixedly sleeved on the rotating shaft for the forward traction rope to wrap around. The combination of the mounting seat, the rotating shaft and the pulley allows the pulley to play a guiding and steering role when the double-rope winch winds and unwinds the forward traction rope, so that the force exerted by the forward traction rope on the slag car is always in a predetermined direction, ensuring that the slag car advances or retreats on the track along the correct path.

[0012] Preferably, in order to prevent the forward traction rope from disengaging from the pulley, limiting pieces for limiting the forward traction rope are fixedly mounted on both sides of the pulley. The limiting pieces limit the transverse movement range of the forward traction rope during the traction of the slag car, ensuring that the forward traction rope always runs in the groove of the pulley, avoiding traction failure or equipment failure caused by disengagement of the forward traction rope from the pulley, and further improving the safety and reliability of the traction device.

[0013] The shield originating horizontal transportation small-size traction device can easily realize the advance and retreat of the slag car on the track through the winding and unwinding operation of the forward traction rope and the retreat traction rope by the double-rope winch. Compared with the traditional traction by the power locomotive, the device has a small size and does not occupy a large amount of space, and is especially suitable for shield split originating construction in a narrow space. The movement range of the slag car on the track is no longer limited, and the slag car can smoothly reach the predetermined hoisting position, thereby ensuring the normal transportation and external transportation of the slag, and avoiding the problem of construction stagnation caused by the inability of the slag car to be positioned.

[0014] The shield originating horizontal transportation small-size traction device can change the force direction of the forward traction rope through the arrangement of the guide assembly, so that the force exerted by the forward traction rope on the slag car is always in a predetermined direction, ensuring that the slag car advances or retreats on the track along the correct path, and avoiding problems such as winding and jamming of the forward traction rope, thereby ensuring the continuity and stability of the entire transportation system.

[0015] The small-size traction device for shield launching horizontal transportation can adopt steel wire rope as the advancing traction rope and the retreating traction rope, so that the slag car can bear larger traction force and will not be easily broken or damaged, and meanwhile, the steel wire rope has better flexibility and can be smoothly wound and unwound on the double-rope winch, so as to ensure normal operation of the traction device and improve transportation efficiency.

[0016] The small-size traction device for shield launching horizontal transportation can limit the transverse movement range of the advancing traction rope through the setting of the limiting piece, so as to ensure that the advancing traction rope always runs in the groove of the pulley and avoid traction failure or equipment failure caused by the disengagement of the advancing traction rope from the pulley, thereby further improving the safety and reliability of the traction device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of the small-size traction device for shield launching horizontal transportation;

[0018] Figure 2 Fig. 2 is a partial structural schematic view of the small-size traction device for shield launching horizontal transportation;

[0019] Figure 3 Fig. 3 is a structural schematic view of the double-rope winch in the small-size traction device for shield launching horizontal transportation;

[0020] Figure 4 Fig. 4 is a structural schematic view of the guide assembly in the small-size traction device for shield launching horizontal transportation.

[0021] In the drawings:

[0022] 1, shield launching horizontal transportation trolley;

[0023] 2, slag car;

[0024] 3, track;

[0025] 4, advancing traction rope;

[0026] 5, retreating traction rope;

[0027] 6, double-rope winch; 61, support seat; 62, winding drum; 63, motor; 64, clutch;

[0028] 7, guide assembly; 71, mounting seat; 72, rotating shaft; 73, pulley; 74, limiting piece. DETAILED DESCRIPTION

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Example 1

[0031] This embodiment provides a small-volume traction device for horizontal transportation of tunnel boring machines at the start of construction, such as... Figures 1-4 As shown, the traction device includes a forward traction rope 4 fixedly installed below the end of the slag car 2 near the shield machine trolley 1 for winding around the shield machine trolley 1; a backward traction rope 5 fixedly installed below the end of the slag car 2 away from the shield machine trolley 1; and a double-rope winch 6 installed at one end of the corresponding backward traction rope 5 of the slag car 2 and connected to the ends of the forward traction rope 4 and the backward traction rope 5 away from the shield machine trolley 1 for winding and unwinding the forward traction rope 4 and the backward traction rope 5, so that the slag car 2 moves forward or backward on the track 3; the traction device also includes a guide assembly 7 installed at the end of the shield machine trolley 1 away from the slag car 2 for guiding the forward traction rope 4.

[0032] To ensure the effectiveness of the forward traction rope 4 and the reverse traction rope 5, both are made of steel wire rope. Since steel wire rope has advantages such as high strength, wear resistance, and good tensile strength, using steel wire rope as the forward traction rope 4 and the reverse traction rope 5 can prevent it from easily breaking or being damaged when the slag car 2 is pulled under large tension. At the same time, the steel wire rope has good flexibility and can be smoothly wound and released on the double rope winch 6, ensuring the normal operation of the traction device and improving transportation efficiency.

[0033] When the slag car 2 needs to move forward on the track 3, the double-rope winch 6 is started, at this time, the double-rope winch 6 retracts and loosens the backward traction rope 5, since one end of the forward traction rope 4 is fixed below the end of the slag car 2 close to the shield machine trolley 1, the other end passes through the guide assembly 7 arranged at the end of the shield machine trolley 1 away from the slag car 2, and is connected to the double-rope winch 6, as the forward traction rope 4 is gradually retracted, it will generate a forward pulling force on the slag car 2, pulling the slag car 2 to move forward along the track 3, in this process, the guide assembly 7 plays a guiding role, ensuring that the forward traction rope 4 always maintains the correct direction, avoiding problems such as winding or jamming, so that the slag car 2 can smoothly and stably move forward, when the slag car 2 needs to move backward, the double-rope winch 6 is started to retract the backward traction rope 5 and loosen the forward traction rope 4, since one end of the backward traction rope 5 is fixed below the end of the slag car 2 away from the shield machine trolley 1, the other end is directly connected to the double-rope winch 6, as the backward traction rope 5 is retracted, it will generate a backward pulling force on the slag car 2, pushing the slag car 2 to move backward along the track 3, in this process, the forward traction rope 4 is in a loosened state and will not hinder the backward movement of the slag car 2, and the guide assembly 7 still plays a restraining role on the forward traction rope 4.

[0034] Specifically, the double-rope winch 6 includes a support seat 61 fixedly arranged at the end of the slag car 2 away from the shield machine trolley 1, symmetrical rotatingly connected drum 62 connected to the support seat 61, and a motor 63 fixedly installed on the support seat 61 for driving one of the drum 62 to rotate, the end of the backward traction rope 5 away from the slag car 2 is wound and connected to one of the drum 62, and the end of the forward traction rope 4 away from the slag car 2 is wound and connected to the other drum 62, the winding directions of the forward traction rope 4 and the backward traction rope 5 are opposite;

[0035] When the slag car 2 needs to move forward on the track 3, the motor 63 of the double rope winch 6 is started, at this time, the motor 63 drives one of the two drum 62 to rotate, because the two drum 62 are connected, so the two drum 62 rotate synchronously, and because the forward traction rope 4 and the backward traction rope 5 are wound on the two drum 62 respectively, and the winding directions of the forward traction rope 4 and the backward traction rope 5 are opposite, so when one of the drum 62 rotates, the end of the backward traction rope 5 away from the slag car 2 is wound on this drum 62, and the backward traction rope 5 is loosened in this process, while the end of the forward traction rope 4 fixed below the end of the slag car 2 close to the shield machine trolley 1, the other end of the forward traction rope 4 is connected to the other drum 62 after winding around the guide assembly 7 arranged at the end of the shield machine trolley 1 away from the slag car 2, the rotation of the other drum 62 drives the forward traction rope 4 to be gradually recovered, as the forward traction rope 4 is gradually recovered, it generates a forward pulling force on the slag car 2, under the action of this pulling force, the slag car 2 moves forward along the track 3, on the contrary, when the slag car 2 needs to retreat, the motor 63 is started to drive the two drum 62 to rotate in the opposite direction, at this time, one of the drum 62 drives the backward traction rope 5 to be gradually recovered, while the other drum 62 drives the forward traction rope 4 to be gradually loosened, as the backward traction rope 5 is recovered, it generates a backward pulling force on the slag car 2, under the action of this pulling force, the slag car 2 moves backward along the track 3, while the forward traction rope 4 is in a loosened state, which does not hinder the backward movement of the slag car 2.

[0036] It should be noted that the fixed connection of the forward traction rope 4 and the backward traction rope 5 with the slag car 2 can be achieved by directly tying the forward traction rope 4 and the backward traction rope 5 on the slag car 2 or by hooking the forward traction rope 4 and the backward traction rope 5 on the slag car 2, and the ends of the forward traction rope 4 and the backward traction rope 5 wound on the two drum 62 are fixedly connected to the drum 62, so as to ensure that the forward traction rope 4 and the backward traction rope 5 do not separate from the corresponding connected drum 62 during the winding and unwinding process.

[0037] Further, a clutch 64 is arranged between the two drum 62, and the two drum 62 are fixedly connected through the clutch 64;

[0038] When the slag car 2 needs to move forward or backward on the track 3, first ensure that the clutch 64 is in the engaged state, so that the two winding drums 62 are fixedly connected together through the clutch 64, start the motor 63 of the double-rope winding machine 6, and the motor 63 drives one of the winding drums 62 to rotate. Since the two winding drums 62 are connected through the clutch 64, the other winding drum 62 will also rotate synchronously. During the forward tunneling process of the shield machine trolley 1, since the forward traction rope 4 is wound on the shield machine trolley 1, and the guide assembly 7 is also installed on the shield machine trolley 1, as the shield machine trolley 1 advances, the guide assembly 7 and part of the forward traction rope 4 will also move forward accordingly. At this time, the clutch 64 needs to be loosened, so that the connection between the two winding drums 62 is disconnected. In this way, the winding drum 62 where the forward traction rope 4 is located can freely rotate under the driving of the forward traction rope 4, so that the forward traction rope 4 can be loosened and lengthened as the shield machine trolley 1 advances, without interfering with the relative movement of the slag car 2 and the shield machine trolley 1. When the shield machine trolley 1 stops tunneling or needs to control the movement of the slag car 2 again, the clutch 64 is re-engaged to restore the fixed connection state of the two winding drums 62, so as to control the winding and unwinding of the forward traction rope 4 and the backward traction rope 5 through the motor 63 driving the winding drum 62, and realize the forward or backward movement of the slag car 2.

[0039] It should be noted that the installation of the clutch 64 and the winding drum 62 can be fixedly connected through bolts, nuts and other connecting parts. When it is necessary to disconnect the connection between the two winding drums 62, the corresponding bolts, nuts and other connecting parts between the winding drum 62 and the clutch 64 can be loosened.

[0040] Further, the guide assembly 7 includes a mounting seat 71 symmetrically and fixedly installed on the bottom of the end of the shield machine trolley 1 away from the slag car 2, a rotating shaft 72 rotatably connected between the two mounting seats 71, and a pulley 73 fixedly sleeved on the rotating shaft 72 for the forward traction rope 4 to wrap around.

[0041] The rotating shaft 72 rotatably connected between the two mounting seats 71 allows the pulley 73 to rotate flexibly. The rotating shaft 72 serves as a support shaft for the pulley 73, allowing the pulley 73 to freely rotate with the movement of the forward traction rope 4. When the double-rope winding machine 6 winds or unwinds the forward traction rope 4, relative movement occurs between the forward traction rope 4 and the pulley 73, so that during the forward or backward movement of the slag car 2, the pulley 73 restricts the forward traction rope 4 to a specific path, thereby guiding the forward traction rope 4 to always maintain the correct direction, ensuring that the slag car 2 moves forward or backward according to the predetermined track 3.

[0042] Example 2

[0043] Different from the embodiment 1, in order to prevent the advancing traction rope 4 from being separated from the pulley 73, the limiting piece 74 for limiting the advancing traction rope 4 is fixedly installed on both sides of the pulley 73; the limiting piece 74 can limit the transverse movement range of the advancing traction rope 4, ensure that the advancing traction rope 4 always runs in the groove of the pulley 73, avoid the traction failure or equipment failure caused by the separation of the advancing traction rope 4 from the pulley 73, and further improve the safety and reliability of the traction device.

[0044] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A small volume launching device for horizontal transportation of a shield, characterized in that: The double rope winch (6) comprises a support seat (61) fixedly arranged at the end of the slag car (2) away from the shield machine trolley (1), symmetrically rotatably connected drum (62) and fixedly installed on the support seat (61) for driving one of the drum (62) rotating motor (63), the end of the retreat traction rope (5) away from the slag car (2) is wound and connected to one of the drum (62), the end of the forward traction rope (4) away from the slag car (2) is wound and connected to the other drum (62), the winding direction of the forward traction rope (4) and the retreat traction rope (5) is opposite. The traction device further comprises a guide assembly (7) arranged at the end of the shield machine trolley (1) away from the slag car (2) for guiding the forward traction rope (4).

2. The shield launching horizontal transport small volume towing device according to claim 1, characterized in that: The forward traction rope (4) and the retreat traction rope (5) are both steel wire ropes.

3. The shield launching horizontal transport small volume towing device according to claim 2, characterized in that: The double rope winch (6) comprises a support seat (61) fixedly arranged at the end of the slag car (2) away from the shield machine trolley (1), symmetrically rotatably connected drum (62) and fixedly installed on the support seat (61) for driving one of the drum (62) rotating motor (63), the end of the retreat traction rope (5) away from the slag car (2) is wound and connected to one of the drum (62), the end of the forward traction rope (4) away from the slag car (2) is wound and connected to the other drum (62), the winding direction of the forward traction rope (4) and the retreat traction rope (5) is opposite.

4. The shield launching horizontal transport small volume towing device according to claim 3, characterized in that: The clutch (64) is arranged between the two drums (62), and the two drums (62) are fixedly connected through the clutch (64).

5. The shield launching horizontal transport small volume towing device according to claim 3, characterized in that: The guide assembly (7) comprises a mounting seat (71) fixedly installed on the bottom of the shield machine trolley (1) away from the slag car (2), a rotating shaft (72) rotatably connected between the two mounting seats (71), and a pulley (73) fixedly sleeved on the rotating shaft (72) for the forward traction rope (4) to surround.

6. The shield launching horizontal transport small volume towing device according to claim 5, characterized in that: The limiting piece (74) for limiting the forward traction rope (4) is fixedly installed on both sides of the pulley (73).

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