A docking system and method for repairing the crawler of an underground tunnel boring machine

Abstract

The present invention discloses a docking system and a docking method for repairing the crawler of an underground tunnel boring machine, which belongs to the technical field of tunnel boring machine crawler repair equipment, and is used to solve the technical problems of safety hazards and easy secondary fracture when docking the disconnected walking crawler in the prior art. The crawler docking system includes a crawler docking device, which is special in that it is used to extend into the fixing holes of the crawler plates at both ends of the disconnected crawler of the tunnel boring machine, and then bring the two ends of the crawler plates that are far away from each other closer to each other, and reconnect and fix them again through a fixing pin; the crawler docking device includes: a crawler docking shell, a worm, the upper end of which is connected to a vertical rotating shaft, the rotating shaft extends upward through the crawler docking shell, and the lower half is installed in the crawler docking shell through a bearing seat, two worm wheels are respectively installed on the crawler docking shell on both sides of the worm through a support shaft, and are meshed with the worm, and two crawler rotating rods are located on both sides of the worm.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel boring machine crawler maintenance equipment, and in particular relates to a docking system and a docking method for repairing an underground tunnel boring machine crawler. Background Art

[0002] A boring machine is a machine used to dig tunnels on straight ground. There are many types of boring machines; according to the working object, they are divided into ordinary machines and tunnel boring machines (TBM); according to the working method, they are divided into open boring machines and shield boring machines. The price generally ranges from 2 million to 8 million yuan, and special ones are even higher. The boring machine is mainly composed of a traveling mechanism, a tensioning mechanism, a working mechanism, a loading mechanism, and a transfer mechanism. As the traveling mechanism moves forward, the cutting head in the working mechanism continuously breaks up the rock and transports the broken rock away.

[0003] The main reasons for the excavator track breakage are:

[0004] 1. Driving on uneven roads. When the excavator is carrying out earthwork projects, the working site is generally uneven. Under such terrain conditions, if the crawler excavator travels on an improper route, the weight of the machine body will tend to be localized, and the local pressure will increase, which will cause certain damage to the crawler track and cause looseness problems.

[0005] 2. When performing walking operations for a long time, the excavator cannot be driven on the road for too long like a car. The operator needs to pay special attention to one point. The crawler excavator cannot walk for too long. This will not only cause great damage to the crawler track, but also affect the service life of the equipment. Therefore, the movement and walking of the excavator must be controlled to a certain degree.

[0006] 3. Improper turning operation. When the excavator is turning, one track remains stationary while the other track moves. Therefore, when turning, if the ground is uneven, the track on the rotating side will be stuck, which will cause the track to be strained or even fall off or break.

[0007] 4. Improper parking position. After the excavator is finished working, the parking position should not be careless. Be sure to choose a flat place for parking, because the uneven ground will cause uneven force on the track surface, causing excessive pressure on the local area, which will cause the track to loosen or even break.

[0008] Regardless of the reason, when the walking track is disconnected, the two ends of the disconnected walking track need to be reconnected. The existing connection method is: manually fix the track close to the shovel side, then adjust the tension of the track, and finally manually reconnect the track plates at both ends. When fixing the track close to the shovel side, one end of the steel pipe is generally inserted into the track fixing hole, and the other end is held in the hands of the workers or fixed in a fixed position. If it is held in the hands of the workers, there are safety hazards. If it is fixed in a fixed position, it is not easy to control the inching of the tunnel boring machine, and poor control will cause the walking track to break again. Summary of the invention

[0009] The purpose of the present invention is to provide a docking system and a docking method for repairing the crawler of an underground tunneling machine, so as to solve the technical problems of potential safety hazards and easy secondary fracture when docking a disconnected walking crawler in the prior art.

[0010] The present invention adopts the following technical solution: a docking system for repairing the crawler of an underground tunnel boring machine, wherein the driving mechanism of the tunnel boring machine is arranged away from the shovel plate, and the tensioning mechanism of the tunnel boring machine is arranged close to the shovel plate;

[0011] The docking system comprises:

[0012] The crawler docking device is used to extend into the fixing holes of the crawler plates at both ends of the disconnected crawler track of the tunnel boring machine, thereby bringing the two ends of the crawler plates that are far away from each other closer together, and reconnecting and fixing them again through the fixing pins;

[0013] The crawler track docking device comprises:

[0014] Track docking housing,

[0015] The worm is arranged vertically, and its upper end is connected with a vertical rotating shaft, which extends upward through the crawler docking housing, and its lower half is installed in the crawler docking housing through a bearing seat.

[0016] Two worm wheels are located on both sides of the worm, and are respectively installed on the crawler docking housings on both sides of the worm through support shafts and mesh with the worm.

[0017] Two track rotating rods are located on both sides of the worm gear, the upper ends of which are respectively sleeved on two supporting shafts, and the lower ends of which are hinged with track tensioning rods. The lower ends of the two track tensioning rods are used to extend into the fixing holes of the disconnected track plates at both ends, so that during the rotation of the worm gear, the lower ends of the track tensioning rods are driven to approach each other, and the track plates at both ends are pulled to approach each other;

[0018] Two track connecting rods are located below the track rotating rod, with their upper ends hinged to the track docking shell and their lower ends hinged to the middle of the corresponding track tensioning rods for limiting the two track tensioning rods.

[0019] Furthermore, the docking system also includes: a track clamping mechanism, located between the tunnel boring machine track and the tunnel boring machine shovel plate, which is used to clamp the track clamping mechanism in the fixing hole of the track plate close to the tunnel boring machine shovel plate when the tunnel boring machine is jogged after the track is disconnected, thereby tensioning the track close to the tunnel boring machine shovel plate, reducing the distance between the two disconnected track plates, and facilitating the track docking device to connect the disconnected track.

[0020] Furthermore, the track clamping mechanism comprises:

[0021] The curved plate has an opening facing the track of the tunnel boring machine, and its curvature is the same as that of the tensioning mechanism of the tunnel boring machine.

[0022] The positioning plate is horizontally arranged on the ground between the crawler and the shovel plate of the tunnel boring machine, and its left end is fixedly connected to the lower end of the arc plate.

[0023] The limit plate is vertically arranged near the excavator shovel plate, and its lower end is fixedly connected to the right end of the positioning plate, and a limit groove is provided on it.

[0024] The right end of the limit rod passes through the limit groove and rests on the shovel plate, and the left end of the limit rod extends to the left and extends into the fixing hole of the track plate close to the side of the tunnel boring machine shovel plate, so that the track close to the side of the tunnel boring machine shovel plate is tensioned, thereby reducing the distance between the two disconnected track plates.

[0025] Furthermore, the track docking shell includes a horizontally arranged top plate, a front side plate fixedly connected to the front side of the top plate and vertically arranged, and a rear side plate fixedly connected to the rear side of the top plate and vertically arranged. The top plate, the front side plate, and the rear side plate cooperate with each other to form a accommodating cavity, and the accommodating cavity is used to accommodate the worm and the worm wheel.

[0026] Furthermore, a docking method for repairing the crawler track of an underground tunnel boring machine comprises the following steps:

[0027] Step 1: Place the track clamping mechanism on the ground between the track and the shovel of the tunnel boring machine, so that the limit rod is against the track near the side of the tunnel boring machine shovel.

[0028] Step 2: Start the tunnel boring machine so that the driving mechanism drives the crawler to rotate slowly. When the distance between the fixing holes of the disconnected crawler plates at both ends is less than or equal to the distance between the lower ends of the two crawler tensioning rods of the crawler clamping mechanism, stop the tunnel boring machine.

[0029] Step 3: Place the track docking device in front of the disconnected track shoes at both ends of the tunnel boring machine, so that the lower ends of the two track tensioning rods extend into the fixing holes of the disconnected track shoes at both ends respectively.

[0030] Step 4: Rotate the worm gear through the rotating shaft so that the lower ends of the two track tensioning rods are close to each other. When the ends of the disconnected track shoes at both ends touch each other, they are reconnected again through the fixing pins.

[0031] Wherein, the track clamping mechanism and the track docking device are the track clamping mechanism and the track docking device described above.

[0032] The beneficial effects of the present invention are:

[0033] 1. The present invention provides a crawler docking device so that the lower ends of the crawler tensioning rods of the crawler docking device extend into the fixing holes of the disconnected crawler plates at both ends respectively, and then the distance between the crawler plates at both ends is continuously reduced by rotating the rotating shaft, and finally they touch each other and are reconnected by the fixing pin;

[0034] 2. The crawler clamping mechanism of the present invention is clamped between the crawler of the tunnel boring machine and the shovel of the tunnel boring machine, and the crawler on the side close to the shovel of the tunnel boring machine is tightened by jogging the tunnel boring machine, and the distance between the fixing holes of the disconnected crawler plates at both ends is forced to be less than or equal to the distance between the lower ends of the two crawler tensioning rods of the crawler clamping mechanism, thereby facilitating the crawler docking device to dock the disconnected crawler plates at both ends;

[0035] 3. The present invention first clamps the crawler by means of the crawler clamping mechanism, then reduces the distance between the disconnected crawler plates at both ends by inching the tunnel boring machine, and finally docks the disconnected crawler plates at both ends by means of the crawler docking device. The operation is simple and the potential safety hazard is reduced. When docking by means of the crawler docking device, the worm power is manually controlled, so the power is uniform and can be checked and adjusted at any time to avoid secondary fracture.

[0036] 4. The present invention is easy to operate, reduces potential safety hazards, and can avoid secondary fractures. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of the first state of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the second state of the present invention;

[0040] Figure 4 It is a schematic diagram of the crawler docking shell structure of the present invention;

[0041] Figure 5It is a schematic diagram of the structure of the track shoe of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the crawler track clamping mechanism of the present invention.

[0043] in:

[0044] 1. Track docking device; 2. Track docking shell; 3. Track clamping mechanism; 4. Track shoe; 5. Fixing hole;

[0045] 101, rear side plate; 102, front side plate; 103, top plate; 104, track rotation rod; 105, track tension rod; 106, track connecting rod;

[0046] 201, worm; 202, bearing seat; 203, rotating shaft; 204, worm wheel;

[0047] 301, arc plate; 302, positioning plate; 303, limiting plate; 304, limiting rod. DETAILED DESCRIPTION

[0048] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] refer to Figures 1 to 6 The invention discloses a docking system for repairing the crawler track of an underground tunnel boring machine, wherein the driving mechanism of the tunnel boring machine is arranged far away from the shovel plate, and the tensioning mechanism of the tunnel boring machine is arranged close to the shovel plate.

[0050] The docking system includes: a crawler docking device 1, which is used to extend into the fixing holes 5 of the two end crawler plates 4 of the broken crawler track of the tunnel boring machine, thereby bringing the two ends of the crawler plates 4 that are far away from each other closer together, and reconnecting and fixing them again through fixing pins.

[0051] The track docking device 1 comprises: a track docking housing 2 , a worm 201 , two worm wheels 204 , two track rotating rods 104 , and two track connecting rods 106 .

[0052] The worm 201 is arranged vertically, and the upper end of the worm 201 is connected to a vertical rotating shaft 203. The rotation of the rotating shaft 203 drives the worm 201 to rotate. The rotating shaft 203 extends upward through the track docking shell 2. The lower half of the rotating shaft 203 is installed in the track docking shell 2 through the bearing seat 202. The rotating shaft 203 is rotatably installed in the track docking shell 2 through the bearing seat 202.

[0053] The two worm wheels 204 are located on both sides of the worm 201. The two worm wheels 204 are respectively installed on the track docking housing 2 on both sides of the worm 201 through support shafts and are meshed with the worm 201. The rotation of the worm 201 drives the two worm wheels 204 to rotate relative to each other, and the meshing between the worm 201 and the worm wheel 204 is self-locking, which prevents the worm wheel 204 from rotating due to external force.

[0054] The two track rotating rods 104 are located on both sides of the worm gear 201, and the upper ends of the two track rotating rods 104 are respectively mounted on two supporting shafts, and the lower ends of the two track rotating rods 104 are hinged with track tensioning rods 105. The rotation of the worm gear 204 drives the track rotating rods 104 to rotate, thereby driving the track tensioning rods 105 to move, and the lower ends of the two track tensioning rods 105 are used to extend into the fixing holes 5 of the disconnected track plates 4 at both ends, so that during the rotation of the worm gear 201, the lower ends of the track tensioning rods 105 are driven to approach each other, and the track plates 4 at both ends are pulled close to each other.

[0055] The two track connecting rods 106 are located below the track rotating rod 104, the upper ends of the two track connecting rods 106 are hinged to the track docking shell 2, and the lower ends of the two track connecting rods 106 are hinged to the middle parts of the corresponding track tensioning rods 105. The two track connecting rods 106 are used to limit the two track tensioning rods 105 to prevent the track tensioning rods 105 from being moved by external forces and to keep the lower ends of the track tensioning rods 105 in a vertical state, so that the lower ends of the track tensioning rods 105 can be easily extended into the fixing holes 5 of the track plates 4, thereby making the tracks more stable when docking.

[0056] By setting up the crawler docking device 1, the lower ends of the crawler tensioning rods 105 of the crawler docking device 1 are respectively extended into the fixing holes 5 of the disconnected crawler plates 4 at both ends, and then the distance between the crawler plates 4 at both ends is continuously reduced by rotating the rotating shaft, and finally touch each other and are reconnected by fixing pins. The operation is simple and the safety hazards are reduced. When docking is performed through the crawler docking device 1, the power of the worm 201 is manually controlled, so the power is uniform, and it can be checked and adjusted at any time to avoid secondary fracture of the crawler.

[0057] The docking system also includes: a track clamping mechanism 3, which is located between the tunnel boring machine track and the tunnel boring machine shovel. The track clamping mechanism 3 is used to clamp the track clamping mechanism 3 in the fixing hole 5 of the track plate 4 close to the tunnel boring machine shovel side when the tunnel boring machine is jogged after the track is disconnected, thereby tensioning the track close to the tunnel boring machine shovel side, reducing the distance between the two disconnected track plates 4, and facilitating the track docking device 1 to connect the disconnected track.

[0058] The crawler track clamping mechanism 3 comprises: an arc plate 301, a positioning plate 302, a limiting plate 303, and a limiting rod.

[0059] The opening of the arc plate 301 is opened toward the crawler of the tunnel boring machine. The curvature of the arc plate 301 is the same as the curvature of the tensioning mechanism of the tunnel boring machine. The arc plate 301 is attached to the crawler of the tunnel boring machine at the tensioning mechanism.

[0060] The positioning plate 302 is horizontally arranged on the ground between the crawler and the shovel of the tunnel boring machine. The left end of the positioning plate 302 is fixedly connected to the lower end of the arc plate 301. The limiting plate 303 is vertically arranged. The limiting plate 303 is arranged close to the shovel of the tunnel boring machine. The lower end of the limiting plate 303 is fixedly connected to the right end of the positioning plate 302. A limiting groove is provided on the limiting plate 303.

[0061] The right end of the limit rod passes through the limit groove and rests on the shovel plate, and the left end of the limit rod extends to the left and extends into the fixing hole 5 of the track shoe 4 close to the side of the tunnel boring machine shovel plate, so that the track close to the side of the tunnel boring machine shovel plate is tensioned, thereby reducing the distance between the two disconnected track shoes 4. The left end of the limit rod extends into the fixing hole 5 of the track shoe 4 and is located at the top of the arc plate 301. The arc plate 301 supports the limit rod and limits the track at the tensioning mechanism to prevent the track at the tensioning mechanism from rotating.

[0062] The track docking shell 2 includes a horizontally arranged top plate 103, a front side plate 102 fixedly connected to the front side of the top plate 103 and vertically arranged, and a rear side plate 101 fixedly connected to the rear side of the top plate 103 and vertically arranged. The top plate 103, the front side plate 102, and the rear side plate 101 cooperate with each other to form a receiving cavity, which is used to accommodate the worm 201 and the worm wheel.

[0063] The present invention also discloses a docking method for repairing a crawler of an underground tunnel boring machine, which comprises the following steps:

[0064] Step 1: Place the crawler clamping mechanism 3 on the ground between the crawler and the shovel of the tunnel boring machine, so that the limit rod is against the crawler near the side of the tunnel boring machine shovel, and the limit rod is passed through the fixing hole 5 of one of the crawler shoes 4, and the limit rod is against the top of the arc plate 301;

[0065] Step 2: Start the tunnel boring machine so that the driving mechanism drives the crawler to rotate slowly. When the distance between the fixing holes 5 of the disconnected crawler shoes 4 at both ends is less than or equal to the distance between the lower ends of the two crawler tensioning rods 105 of the crawler clamping mechanism 3, stop the tunnel boring machine.

[0066] Step 3: Place the crawler docking device 1 before the disconnected crawler shoes 4 at both ends of the tunnel boring machine crawler, so that the lower ends of the two crawler tensioning rods 105 extend into the fixing holes 5 of the disconnected crawler shoes 4 at both ends respectively;

[0067] Step 4: Rotate the worm 201 by the rotating shaft 203 so that the lower ends of the two track tensioning rods 105 approach each other. When the ends of the disconnected track shoes 4 at both ends touch each other, they are reconnected again by the fixing pin. The rotating shaft 203 is driven to rotate by the handle at the upper end thereof. The rotating shaft 203 drives the worm 201 to rotate. The rotation of the worm 201 drives the two worm wheels 204 to rotate relative to each other. The relative rotation of the two worm wheels 204 drives the two track rotating rods 104 to rotate relative to each other, thereby driving the two track tensioning rods 105 to approach each other under the action of the track connecting rod 106, and then driving the disconnected track shoes 4 at both ends to approach each other. When the ends of the disconnected track shoes 4 at both ends touch each other, they are reconnected again by the fixing pin. The track clamping mechanism 3 and the track docking device 1 are the track clamping mechanism 3 and the track docking device 1 described above.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A docking system for repairing the crawler of an underground tunnel boring machine, characterized in that: The driving mechanism of the tunnel boring machine is arranged away from the shovel plate, and the tensioning mechanism of the tunnel boring machine is arranged close to the shovel plate; the docking system comprises: a track docking device (1) for extending into fixing holes (5) of track shoes (4) at both ends of the disconnected track of the tunnel boring machine, thereby bringing the two ends of the track shoes (4) away from each other closer together, and reconnecting and fixing them again through fixing pins; the track docking device (1) comprises: Track docking housing (2), The worm (201) is arranged vertically, and its upper end is connected to a vertical rotating shaft (203). The rotating shaft (203) passes through the crawler docking housing (2) and extends upward. The lower half of the rotating shaft (203) is installed in the crawler docking housing (2) through a bearing seat (202). Two worm wheels (204) are located on both sides of the worm (201), are respectively mounted on the crawler docking housings (2) on both sides of the worm (201) via support shafts, and are meshed with the worm (201). Two track rotating rods (104) are located on both sides of the worm (201), and their upper ends are respectively sleeved on two supporting shafts, and their lower ends are hinged with track tensioning rods (105). The lower ends of the two track tensioning rods (105) are used to extend into the fixing holes (5) of the disconnected track plates (4) at both ends, so that during the rotation of the worm (201), the lower ends of the track tensioning rods (105) are driven to approach each other, and the track plates (4) at both ends are pulled to approach each other; Two track connecting rods (106) are located below the track rotating rod (104), with their upper ends hinged to the track docking housing (2) and their lower ends hinged to the middle of the corresponding track tensioning rods (105) for limiting the position of the two track tensioning rods (105).

2. A docking system for repairing the crawler of an underground tunnel boring machine according to claim 1, characterized in that: The docking system further comprises: a track clamping mechanism (3) located between the track of the tunnel boring machine and the shovel plate of the tunnel boring machine, and used for clamping the track clamping mechanism (3) in a fixing hole (5) of a track plate (4) close to the shovel plate of the tunnel boring machine when the tunnel boring machine is started after the track is disconnected, thereby tensioning the track close to the shovel plate of the tunnel boring machine, reducing the distance between the two disconnected track plates (4), and facilitating the track docking device (1) to connect the disconnected track.

3. A docking system for repairing the crawler track of an underground tunnel boring machine according to claim 2, characterized in that: The crawler track clamping mechanism (3) comprises: The arc-shaped plate (301) has an opening facing the crawler track of the tunnel boring machine, and its arc direction is the same as the arc direction of the tensioning mechanism of the tunnel boring machine. The positioning plate (302) is horizontally arranged on the ground between the crawler and the shovel plate of the tunnel boring machine, and its left end is fixedly connected to the lower end of the arc-shaped plate (301). The limiting plate (303) is vertically arranged and disposed close to the excavator shovel plate. Its lower end is fixedly connected to the right end of the positioning plate (302) and a limiting groove is provided on it. The right end of the limit rod passes through the limit slot and abuts against the shovel plate, and the left end of the limit rod extends leftward and extends into a fixing hole (5) of a track shoe (4) close to the side of the tunnel boring machine shovel plate, so that the track close to the side of the tunnel boring machine shovel plate is tensioned, thereby reducing the distance between the two disconnected track shoes (4).

4. A docking system for repairing the crawler track of an underground tunnel boring machine according to claim 1, characterized in that: The crawler docking housing (2) comprises a horizontally arranged top plate (103), a front side plate (102) fixedly connected to the front side of the top plate (103) and arranged vertically, and a rear side plate (101) fixedly connected to the rear side of the top plate (103) and arranged vertically, wherein the top plate (103), the front side plate (102), and the rear side plate (101) cooperate with each other to form a receiving cavity, and the receiving cavity is used to receive the worm (201) and the worm wheel.

5. A docking method for repairing the crawler of an underground tunnel boring machine, characterized in that: It consists of the following steps: Step (1): Place the crawler clamping mechanism (3) on the ground between the crawler and the shovel of the tunnel boring machine, so that the limit rod is against the crawler on the side close to the shovel of the tunnel boring machine. Step (2): starting the tunnel boring machine so that the driving mechanism drives the crawler track to rotate slowly, and when the distance between the fixing holes (5) of the disconnected crawler plates (4) at both ends is less than or equal to the distance between the lower ends of the two crawler track tensioning rods (105) of the crawler track clamping mechanism (3), stopping the tunnel boring machine; Step (3): placing the crawler docking device (1) in front of the disconnected crawler plates (4) at both ends of the tunnel boring machine crawler, so that the lower ends of the two crawler tensioning rods (105) extend into the fixing holes (5) of the disconnected crawler plates (4) at both ends respectively. Step (4): rotating the worm (201) by means of the rotating shaft (203) so that the lower ends of the two track tensioning rods (105) are brought closer to each other, and when the ends of the disconnected track shoes (4) at both ends touch each other, they are reconnected again by means of the fixing pins; Wherein, the track clamping mechanism (3) and the track docking device (1) are the track clamping mechanism (3) and the track docking device (1) according to any one of claims 1 to 4.

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