Main drive disassembling device of heading machine

Abstract

The utility model relates to a dismounting device for a main drive of a tunneling machine, in particular to the field of tunnel boring machines. A dismounting device for a main drive of a heading machine comprises a frame body, a supporting structure and a limiting part are arranged on the frame body, a pulling mechanism is further arranged on the frame body, the pulling mechanism is provided with a pulling end which is used for being fixedly connected with a drive box and doing direct motion, and the supporting structure is used for being as high as a to-be-supported part of the drive box. By arranging the pulling mechanism, the main drive can be conveniently transferred to the machine disassembling device from the shield body, and the main drive can be directly moved to the supporting structure from the front shield of the heading machine, so that the main drive can be conveniently transferred; therefore, the problems that in the prior art, a motor, a speed reducer and a pipeline on the main drive need to be dismantled in the process that the main drive of the heading machine is transported from the inside to the outside of the hole, and when the motor, the speed reducer and the pipeline need to be assembled again when needing to be used, operation is tedious, and the main drive is possibly scrapped and cannot be reused are solved.

Description

Technical Field

[0001] The utility model relates to a main drive disassembly device for a tunnel boring machine, in particular to the field of tunnel boring machines. Background Art

[0002] With the rapid development of underground space in my country, shield tunnel construction methods are constantly being updated and iterated. Tunnel boring machines are indispensable in shield construction, which also puts higher requirements on tunnel boring machines. The main drive of the tunnel boring machine includes a drive box, on which is installed a motor that drives the cutter head to rotate and a reducer for connecting to the motor. These components have great use value. After the completion of tunnel construction, some parts of the tunnel boring machine, such as the main drive, often have not reached the end of their service life and can continue to be reused. Therefore, it is necessary to dismantle the tunnel boring machine and dismantle the main drive and other parts that still have use value separately.

[0003] At present, in the construction of underground tunnel projects at home and abroad, there is a construction method of counter-excavation, that is, two tunnel boring machines are used to construct at both ends of the tunnel at the same time. At this time, the end point of the excavation is in the middle of the tunnel, so there is no receiving well. Naturally, it is impossible to lift at the end of the tunnel. At this time, the only way to dismantle the machine in the tunnel is to dismantle the machine in the tunnel. The main drive of the tunnel boring machine is large in size and heavy in weight. Since there is no crane, the main drive is often further disassembled and divided into multiple parts and transported out separately. For example, the Chinese utility model patent with the authorization announcement date of July 27, 2016 and the authorization announcement number of CN205400737U discloses a shield machine's in-tunnel dismantling main drive device. After the excavation is completed, the equipment bridge and the segment assembly machine are first disassembled from the tunnel boring machine and transported out. After that, the reducer and motor on the main drive are disassembled and transported out, and then the grease pipeline on the main drive is disconnected, and the sealing pressure ring at the front end of the main drive is removed. In other words, the various components on the main drive are disassembled to reduce the volume and weight for easy transportation.

[0004] However, the main drive in the above technical solution needs to be dismantled into fragmented parts before being transported out of the cave. After the fragmented parts are transported out of the cave, they need to be assembled when they are needed again. There are many parts on the main drive, and the disassembly and assembly steps are cumbersome. During the disassembly and assembly process, the main drive is likely to be damaged and cannot be used again. Utility Model Content

[0005] The purpose of the utility model is to provide a main drive disassembly device for a tunnel boring machine, which is used to solve the problem in the prior art that the motor, reducer and pipeline on the main drive of the tunnel boring machine need to be dismantled during transportation from inside the tunnel to outside the tunnel, and then assembled again when needed, which causes cumbersome operation and may cause the main drive to be scrapped and unable to be reused.

[0006] To achieve the above object, the following technical solution is adopted for the main drive disassembly device of the roadheader in the present utility model:

[0007] A main drive disassembly device for a roadheader, the disassembly device includes a frame body, on which a support structure for supporting the drive box of the main drive of the roadheader and a limiting part for keeping the relative position of the disassembly device and the front shield of the roadheader unchanged are provided. A pulling mechanism for pulling the main drive is also provided on the frame body. The pulling mechanism has a pulling end for fixedly connecting with the drive box and performing a linear motion. The support structure is used to be at the same height as the part of the drive box to be supported so that the main drive can be translated onto the support structure of the frame body when the pulling end pulls the drive box.

[0008] Further, the pulling mechanism includes a vertically arranged vertical support and a horizontally arranged pull rod provided on the vertical support. The support structure is arranged in front of the vertical support. A driving member for driving the pull rod to move back and forth relative to the vertical support is also provided between the pull rod and the vertical support. The pulling end is arranged at the front end of the pull rod.

[0009] Further, the vertical support includes a fixed support column fixedly connected to the frame body and a movable support column guided in the vertical direction on the fixed support column. The pull rod is arranged on the movable support column. A linear motion power mechanism for driving the movable support column to move relative to the fixed support column and keeping the relative position of the movable support column and the fixed support column unchanged after the movement is provided between the movable support column and the fixed support column.

[0010] Further, the support structure includes an insertion section for inserting into the gap between the drive box and the shield block of the front shield during disassembly. The end face of the insertion section is used to fit with the end face of the shield support ring.

[0011] Further, the support structure includes at least two horizontally arranged support rails, and each support rail is provided with the insertion section. The multiple support rails are parallel and arranged at intervals along the circumference.

[0012] Further, the support structure includes an arc-shaped support plate, and the upper surface of the arc-shaped support plate is used to fit with the outer peripheral surface of the drive box.

[0013] Further, the support structure includes at least two horizontally arranged support rails, and the respective support rails are parallel and arranged at intervals along the circumference.

[0014] Further, a fixing structure for fixing the support rail is also provided on the frame body and is located below the support rail. The limiting part is a limiting plate provided at the front end of the fixing structure and used for fixedly connecting with the front shield.

[0015] Further, the limiting part is a limiting plate provided at the front end of the support rail and used for fixedly connecting with the front shield.

[0016] Further, the vertical strut is a support column made of H-shaped steel, and the driving member is arranged in the groove of the H-shaped steel.

[0017] Further, the driving member is a hollow oil cylinder sleeved on the pull rod, and the output end of the hollow oil cylinder is fixedly connected to the pull rod.

[0018] Further, an installation plate is fixedly arranged at the front end of the pull rod, and a fastener perforation for a fastener to pass through and be fixedly connected to the main drive is arranged on the installation plate, and the installation plate constitutes the pulling end.

[0019] The beneficial effect of the main drive disassembly device of the roadheader in the present invention lies in that: the present invention pioneeringly proposes a main drive disassembly device of the roadheader. By arranging a frame body and a support structure on the frame body to facilitate the support of the main drive, and then facilitating the transfer of the main drive; by arranging a pulling mechanism to facilitate the connection with the main drive and transfer the main drive from the shield body to the support structure of this disassembly device, by arranging a pulling end to facilitate the application of force to the main drive, and by arranging a limiting part to avoid the main drive from tipping over or other dangers due to the movement of the frame body during the transfer process; since the support structure is at the same height as the part of the main drive to be supported, under the pulling action of the pulling end, the main drive can directly move from the front shield of the roadheader to the support structure, which is convenient for transfer; thus solving the problem in the prior art that when the main drive of the roadheader is transported from the tunnel to the outside of the tunnel, the motors, reducers and pipelines on the main drive need to be removed first, and when in use, they need to be assembled again, resulting in cumbersome operation and possible scrapping of the main drive and inability to be reused. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the main drive disassembly device of the roadheader in the present invention;

[0021] Figure 2 It is a schematic structural diagram of another perspective of an embodiment of the main drive disassembly device of the roadheader in the present invention;

[0022] Figure 3 It is a schematic structural diagram of the cooperation between the main drive disassembly device of the roadheader in the present invention and the main drive in an embodiment;

[0023] Figure 4 It is an initial state diagram during the use process of an embodiment of the main drive disassembly device of the roadheader in the present invention (at this time, the steel rails are laid);

[0024] Figure 5 It is a process state diagram during the use process of an embodiment of the main drive disassembly device of the roadheader in the present invention (at this time, the main drive disassembly device of the roadheader has been connected to the mainframe of the roadheader);

[0025] Figure 6 This is a process state diagram during the use of an embodiment of the main drive disassembly device for a roadheader in the present utility model (at this time, the main body of the roadheader has been transferred to the main drive disassembly device for the roadheader);

[0026] Figure 7 This is a process state diagram during the use of an embodiment of the main drive disassembly device for a roadheader in the present utility model (at this time, the main drive disassembly device for the roadheader pulls the main drive outwards by a certain distance).

[0027] In the figure: 1, tunnel; 21, front shield; 22, main drive; 23, segment; 24, steel rail; 31, pull rod; 32, mounting plate; 33, hollow oil cylinder; 34, vertical strut; 41, frame body; 42, section steel; 43, support rail; 44, limit plate; 45, steel wheel; 51, support block; 52, jack. Specific embodiments

[0028] The features and performance of the present utility model will be further described in detail below in conjunction with embodiments.

[0029] In the main drive disassembly device for a roadheader of the present utility model, a support structure is provided to facilitate the transportation of the disassembled main drive, and a pulling structure is provided to facilitate pulling the main drive as a whole from the front shield onto the support structure, realizing the overall disassembly of the main drive.

[0030] In Embodiment 1 of the main drive disassembly device for a roadheader of the present utility model (hereinafter referred to as the disassembly device):

[0031] As Figure 1 and Figure 2 shown, in this embodiment, the disassembly device includes a frame body 41. A steel wheel 45 for moving along the steel rail 24 already laid at the bottom of the tunnel 1 is provided at the bottom of the frame body 41. A support structure for supporting the disassembled main drive 22 of the roadheader and a pulling mechanism for pulling the main drive 22 to transfer the main drive 22 from the roadheader to the disassembly device are further provided on the frame body 41. The pulling mechanism has a pulling end for fixedly connecting with the main drive 22.

[0032] The pulling mechanism includes a vertical support 34 fixedly arranged on the frame body 41. The vertical support 34 is a support column made of H-shaped steel. In addition, the pulling mechanism further includes a pull rod 31. A through hole for the pull rod 31 to pass through is provided on the web of the support column, and the pull rod 31 is located within the through hole. Specifically, the pull rod 31 is a deformed bar. During the pulling process, the vertical support 34 cannot affect the transfer of the main drive 22. Therefore, the support structure is closer to the main drive 22. The positioning support structure is located at the front end of the disassembly device, and the vertical support 34 is located at the rear end of the disassembly device. To facilitate the pulling of the main drive 22, the pull rod 31 is horizontally arranged, and during the movement, the moving direction of the pull rod 31 is along the axis direction of the main drive 22. To facilitate the pull rod 31 to apply force to the main drive 22, an installation plate 32 for connecting to the main drive 22 of the roadheader is provided at the end of the pull rod 31 facing the main drive 22. The installation plate 32 is welded to the end of the pull rod 31. Through holes for bolts or screws to pass through are provided on the installation plate 32. Fastener through holes for these threaded fasteners to pass through are machined or reserved on the roadheader. Naturally, the installation plate 32 constitutes the pulling end of the pulling mechanism. The mass of the main drive 22 is relatively large. To better pull the main drive 22, two groups of pull rods 31 and vertical supports 34 are provided. The two groups of pull rods 31 and vertical supports 34 are symmetrically arranged about the axis of the main drive 22, thereby facilitating the simultaneous pulling of the main drive 22 and reducing the force borne by a single pull rod 31. Of course, in other embodiments, the vertical support can also be set as a solid steel column, and through holes for the pull rod to pass through are provided on the steel column. Or, in other embodiments, the pull rod can be integrally formed, and during the forming process, the installation plate is directly formed at the end of the pull rod.

[0033] The main drive 22 has a relatively large mass. During the process of transferring the main drive 22 from the roadheader to this disassembly device, it needs to be pulled along the axis of the main drive 22. It is impossible to perform the pulling operation solely by manpower. Therefore, the pulling mechanism further includes a driving member for driving the pull rod 31 to move relative to the vertical support 34. Specifically, the driving member is a hollow oil cylinder 33. The output end of the hollow oil cylinder 33 is a hollow shaft sleeve. The hollow oil cylinder 33 is sleeved and fixed on the pull rod 31, and the hollow shaft sleeve is fixedly connected to the pull rod 31. The cylinder body of the hollow oil cylinder 33 is fixedly arranged on the vertical support 34. Specifically, the cylinder body of the hollow oil cylinder 33 is fixedly arranged in the groove of the H-shaped steel forming the vertical support 34, and the position of the hollow oil cylinder 33 is limited by the structure of the H-shaped steel itself. The hollow oil cylinder 33 is fixedly arranged on the side of the vertical support 34 away from the mounting plate 32. When the hollow oil cylinder 33 works, the hollow shaft sleeve moves away from the vertical support 34. Correspondingly, the hollow shaft sleeve will pull the pull rod 31 to move along the axis of the pull rod 31, thereby driving the main drive 22 to approach this disassembly device until it moves onto the disassembly device. Of course, in other embodiments, the pull rod can also be set as a lead screw. A nut is sleeved on the outside of the lead screw located on the vertical support. The inner side of the nut is a threaded section, and the outer side is a gear. A motor is installed on the vertical support, and a driving gear for driving the nut to rotate is arranged at the output end of the motor. Then, the nut is indirectly driven by the motor to move, so that the lead screw makes a linear motion.

[0034] As Figure 1 and Figure 3 shown, the main drive 22 of the roadheader is installed in the front shield 21. The front shield 21 is composed of multiple shield segments. A shield support ring is also arranged at the central position of the multiple shield segments. The shield support ring is welded to the shield segments. When installed, the main drive 22 is embedded in the shield support ring. The outer shape of the drive box of the main drive 22 is stepped. Its small-diameter section contacts the shield support ring, and the large-diameter section has a clearance fit with the shield segments. The axis of the drive box extends in the horizontal direction. Then, during the process of supporting the main drive 22, the arc surface also needs to be supported. The support structure includes support rails 43. There are three support rails 43. The three support rails 43 are all horizontally arranged and have the same extension direction. During use, the support rails 43 are arranged at intervals along the circumference of the main drive 22. At this time, the multiple support rails 43 are attached to the outer peripheral surface of the arc-shaped main drive 22, that is, the three support rails 43 are arranged in a V shape. The middle support rail 43 is located at the bottom, and the two support rails 43 on both sides are located at a slightly higher position. Of course, in other embodiments, the support rails 43 can also be set as two, and the two support rails 43 are arranged at intervals. Or, in other embodiments, the support rails can also be set as four or five or other quantities. At this time, it should be noted that the multiple support rails need to be on the same circumference, and the radius of this circumference is equal to the radius of the circumference of the outer peripheral surface of the main drive.

[0035] The shield support ring is directly connected to the main drive 22. During the removal process of the main drive 22, the main drive 22 is actually pulled out from the shield support ring. If the axial length of the shield support ring is smaller than the length of the shield segments, when pulling the main drive 22, it will cause the upper part of the main drive 22 to be in a suspended state on the shield support ring, resulting in an unstable transportation process. Therefore, a support rail 43 for supporting the main drive 22 inside the front shield 21 is also provided. The support rail 43 includes an insertion section for inserting into the gap between the drive box of the main drive 22 and the shield segments of the front shield 21 during disassembly. Through the setting of the insertion section, when the main drive 22 is disassembled and has no fixed connection with the front shield 21 and the cutter head, it will not fall downward, ensuring the smoothness of the transfer. Or, in other embodiments, if the extension length of the shield support ring is longer and equal to the overall length of the shield, then the insertion section on the support rail can also be not set, and only the end of the support rail is flush with the end face of the shield.

[0036] The main drive 22 has a large weight. During the transfer process, the entire weight of the main drive 22 will be pressed on the support structure. Therefore, the frame 41 also includes a fixing structure respectively arranged below each support rail 43. Specifically, the fixing structure is a section steel 42. The section steel 42 can be an I-beam or an H-beam. When in use, multiple section steels 42 can disperse the gravity and reduce the gravity that each section steel 42 needs to bear. During the transfer process, the main drive 22 will move relative to the front shield 21. Therefore, it is necessary to fixedly connect the disassembly device to the front shield 21. In this embodiment, a limiting plate 44 is fixedly arranged at the end of the section steel 42 close to the front shield 21. The limiting plate 44 is provided with a fastener through hole, and the limiting plate 44 and the front shield 21 are fixedly connected through fasteners such as bolts. At this time, the frame 41 is also indirectly connected to the front shield 21. To prevent the disassembly device from moving during the transfer process. It should be noted that the limiting plate 44 cannot obstruct the main drive 22, and the limiting plate 44 is located below the support rail 43. Of course, in other embodiments, the section steel can also not be set, and at this time the support rail 43 is directly fixedly arranged on the frame. Or, in other embodiments, other limiting forms can also be adopted, such as setting a rail clamp at the bottom of the disassembly device that can be fixedly connected to the rail. When disassembly is required, the rail clamp is used to fixedly connect the disassembly device to the rail. Since the front shield will not move relative to the tunnel and the rail inside the tunnel at this time, it actually constitutes the relative fixation between the front shield and the disassembly device.

[0037] Such as Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, during the disassembly of the main drive 22, first remove the trailing support trailer, the assembling machine, the crossbeam, and the personnel cabin of the roadheader. At this time, there is no obstruction on the retraction path of the main drive 22, and disassembly can be carried out. At this time, extend the steel rail 24 in the tunnel 1 to the location of the main drive 22 and align it with the rear end face of the front shield 21. Then remove the bolts between the main drive 22 and the front shield 21. Before removal, it is necessary to place the disassembly device in place so that the insertion section of the support rail 43 is inserted between the front shield 21 and the main drive 22, and the insertion section is docked with the shield support ring. At this time, the main drive 22 and the cutter head are still connected by bolts. Remove the bolts so that the connection between the main drive 22 and the cutter head and between the main drive 22 and the front shield is lost. Connect the pulling end to the main drive 22 and connect the limit plate to the front end 21. Then activate the hollow oil cylinder 33. At this time, the hollow oil cylinder 33 drives the pull rod 31, causing the pull rod 31 to pull the main drive 22 to move relative to the front shield 21. When the main drive 22 and the shield support ring are disengaged from each other, stop pulling the hollow oil cylinder 33. Fix a jack 52 on the front shield 21, fixedly install a support block 51 on the front shield 21 of the main drive 22, and use the jack 52 to support the support block 51 to prevent the main drive 22 from tipping over. After the jack 52 supports the support block 51, continue to pull the main drive 22 backward until the main drive 22 is pulled out and toppled onto the support structure of the disassembly device. It should be noted that during the pulling process, since there is a gap between the small-diameter section of the drive box of the main drive 22 and the shield segments of the front shield 21, as Figure 5 shown, place additional support blocks 51 on the inner circumferential surface of the front shield 21 to fill the gap between the main drive 22 and the front shield 21 and prevent the main drive 22 from tipping over during the transfer process. In addition, during the pulling process of the main drive 22, it is necessary to ensure that the main drive 22 moves forward at a constant speed to avoid the risk of falling from the disassembly equipment due to large inertia during the acceleration and deceleration processes.

[0038] In Embodiment 2 of the main drive disassembly device of the roadheader of the present utility model (hereinafter referred to as the disassembly device):

[0039] This embodiment is improved on the basis of Embodiment 1. Specifically, the vertical support structure is mainly improved. There are also various models and sizes of roadheaders. In order to have a wider universality, in this embodiment, the vertical support structure is changed to a liftable vertical support. Specifically, the vertical support is a support column, which includes a movable support column that can move in a guided manner in the vertical direction and a fixed support column fixedly connected to the frame body. The pull rod is arranged on the movable support column, and a linear motion power mechanism is arranged between the movable support column and the fixed support column. The linear motion power mechanism is a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0040] In Embodiment 3 of the main drive disassembly device of the roadheader of the present utility model (hereinafter referred to as the disassembly device):

[0041] This embodiment is a modification based on Embodiment 1. Specifically, the support structure is redesigned. There are various models of roadheaders. In a slurry shield tunneling machine, there is a gap between the main drive and the front shield. However, there are also roadheaders where there is no gap between the main drive and the front shield, such as an earth pressure balance shield tunneling machine. For a method where the sizes of the main drive and the front shield are exactly matched, since the main drive and the front shield are in contact, even if the connections between the main drive, the front shield, and the cutter head are removed, as the main drive is placed on the front shield, it will not shake. Therefore, during the disassembly process, support blocks do not need to be provided on the outer peripheral surface of the main drive. It is only necessary to make the support rail flush with the end face of the front shield. At this time, the limit plate is fixedly arranged at the end of the support rail. Correspondingly, additional support blocks do not need to be used during the disassembly process either.

[0042] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. A main drive disassembly device for a roadheader, characterized in that: The disassembly device includes a frame body, on which a support structure for supporting the drive box of the main drive of the roadheader and a limiting part for keeping the relative position between the disassembly device and the front shield of the roadheader unchanged are provided. A pulling mechanism for pulling the main drive is also provided on the frame body. The pulling mechanism has a pulling end for fixedly connecting with the drive box and performing a linear motion, and the support structure is used to be at the same height as the part of the drive box to be supported so that the main drive can be translated onto the support structure of the frame body when the pulling end pulls the drive box.

2. The main drive disassembly device of the roadheader according to claim 1, characterized in that: The pulling mechanism includes a vertically arranged vertical support and a horizontally arranged pull rod provided on the vertical support. The support structure is arranged in front of the vertical support. A driving member for driving the pull rod to move back and forth relative to the vertical support is also provided between the pull rod and the vertical support. The pulling end is arranged at the front end of the pull rod.

3. The main drive disassembly device of the roadheader according to claim 2, wherein: The vertical support includes a fixed support column fixedly connected with the frame body and a movable support column guidingly arranged on the fixed support column in the vertical direction. The pull rod is arranged on the movable support column. A linear motion power mechanism for driving the movable support column to move relative to the fixed support column and keeping the relative position between the movable support column and the fixed support column unchanged after the movement is provided between the movable support column and the fixed support column.

4. The main drive disassembly device of the roadheader according to any one of claims 1-3, characterized in that: The support structure includes an insertion section for inserting into the gap between the drive box and the shield segment of the front shield during disassembly. The end face of the insertion section is used to fit with the end face of the shield support ring.

5. The main drive disassembly device of the roadheader according to claim 4, wherein: The support structure includes at least two horizontally arranged support rails, and each support rail is provided with the insertion section. The support rails are parallel and arranged at intervals along the circumference.

6. The main drive disassembly device of the roadheader according to claim 4, characterized in that: The support structure includes an arc-shaped support plate, and the upper surface of the arc-shaped support plate is used to fit with the outer peripheral surface of the drive box.

7. The main drive disassembly device for a roadheader according to any one of claims 1 to 3, characterized in that: The support structure includes at least two horizontally arranged support rails, and the support rails are parallel and arranged at intervals along the circumference.

8. The main drive disassembly device of the roadheader according to claim 7, characterized in that: A fixing structure for fixing the support rail is also provided on the frame body below the support rail. The limiting part is a limiting plate arranged at the front end of the fixing structure and used for fixedly connecting with the front shield.

9. The main drive disassembly device of the roadheader according to claim 7, wherein: The limiting part is a limiting plate arranged at the front end of the support rail and used for fixedly connecting with the front shield.

10. The main drive disassembly device for a roadheader according to claim 2 or 3, characterized in that: The vertical support is a support column made of H-shaped steel, and the driving member is arranged in the groove of the H-shaped steel.

11. The main drive disassembly device of the roadheader according to claim 2 or 3, characterized in that: The driving member is a hollow oil cylinder sleeved on the pull rod, and the output end of the hollow oil cylinder is fixedly connected with the pull rod.

12. The main drive disassembly device for a roadheader according to claim 2 or 3, characterized in that: An installation plate is fixedly arranged at the front end of the pull rod, and a fastener perforation for allowing a fastener to pass through and fixedly connect with the main drive is arranged on the installation plate. The installation plate constitutes the pulling end.

Images