Variable cross section tunneling machine cutter head multidirectional movement device

Abstract

The application relates to a multi-direction moving device of a variable cross-section tunneling machine cutter head, belonging to the field of tunneling machines, which comprises a machine shell, a moving frame and a cutter frame for supporting the cutter head, the moving frame and the cutter frame are arranged in the machine shell, a first driving element is arranged in the machine shell, the first driving element is connected with the moving frame, the first driving element drives the moving frame to reciprocate along the width direction of the machine shell, the cutter frame is slidably connected in the moving frame along the vertical direction, a second driving element is arranged on the moving frame, and the second driving element is connected with the cutter frame. The second driving element controls the cutter frame to move along the vertical direction, realizes the adjustment of the cutter head in a first direction, the first driving element drives the moving frame to move, the moving frame drives the cutter frame to move, the adjustment of the cutter head in a second direction is realized, the function of changing the cross section of the tunneling machine is realized, the steps of replacing the cutter head or changing the radius of the cutter head by the operator are reduced, part of time is saved, and the digging efficiency of the tunneling machine is improved.

Description

Technical Field

[0001] This application relates to the field of tunneling machines, and more particularly to a multi-directional movement device for the cutterhead of a variable cross-section tunneling machine. Background Technology

[0002] A tunneling machine is a machine used to excavate tunnels in flat ground. A tunneling machine mainly consists of a traveling mechanism, a working mechanism, a loading mechanism, and a transfer mechanism.

[0003] In related technologies, the working mechanism mainly includes a housing, a cutter holder for supporting the cutterhead, and a drive assembly for driving the cutterhead. Both the cutter holder and the drive assembly are housed within the housing, while the cutterhead extends out of the housing. The drive assembly drives the cutterhead to start digging. When it is necessary to change the digging cross-section, the operator needs to use different models of cutterheads or a variable-diameter cutterhead for digging. The variable-diameter cutterhead primarily changes the overall diameter of the cutterhead by extending blades.

[0004] Regarding the aforementioned technologies, the inventors found that the cutterhead is large in size, requiring a significant amount of time and manpower to replace; the variable-diameter cutterhead, after diameter change, has a large load between the blade and the cutterhead and a complex structure, requiring a significant amount of time and manpower for repair in case of malfunction, thus affecting digging efficiency, and therefore needs to be improved. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a multi-directional movement device for the cutterhead of a variable cross-section tunneling machine.

[0006] This application provides a multi-directional moving device for the cutterhead of a variable cross-section tunneling machine, which adopts the following technical solution:

[0007] A multi-directional moving device for a variable cross-section tunneling machine cutterhead includes a housing, a moving frame, and a cutter holder for supporting the cutterhead. Both the moving frame and the cutter holder are disposed in the housing. A first driving member is provided in the housing and is connected to the moving frame. The first driving member drives the moving frame to reciprocate along the width direction of the housing. The cutter holder is slidably connected in the moving frame in the vertical direction. A second driving member is provided on the moving frame and is connected to the cutter holder.

[0008] By adopting the above technical solution, when it is necessary to change the cross-section of the excavation, the operator activates the first drive unit, which drives the moving frame to move, thereby adjusting the position of the cutter head and thus adjusting the position of the cutter head so that the cutter head can cut cross-sections of different areas. The operator then controls the movement of the cutter head through the second drive unit, which in turn drives the cutter head to move, expanding the usable range of the cutter head and reducing the steps required for the operator to replace the cutter head or directly change the diameter of the cutter head, saving some time and thus improving the operator's excavation efficiency.

[0009] Preferably, the movable frame has a first support groove and a second support groove arranged opposite to each other. The first support groove has a first support plate, and the second support groove has a second support plate. The side of the first support plate and the second support plate away from the movable frame abuts against the tool holder.

[0010] By adopting the above technical solution, when the second drive unit is started, the operator inserts the first support plate into the first support groove and then inserts the second support plate into the second support groove, so that the first support plate and the second support plate provide support for the tool holder, so that the tool disc can work more stably.

[0011] Preferably, the first driving component includes two first cylinders arranged opposite each other, the output ends of the two first cylinders arranged opposite each other reciprocate in the horizontal direction, the output ends of the two first cylinders arranged opposite each other are connected to the moving frame through a connecting plate, and the side of the two first cylinders arranged opposite each other away from the moving frame is connected to the inner wall of the housing.

[0012] The second driving component includes two second hydraulic cylinders arranged opposite each other. The output ends of the two second hydraulic cylinders arranged opposite each other reciprocate in the vertical direction. One end of each of the two second hydraulic cylinders arranged opposite each other is connected to the moving frame, and the other end is connected to the tool holder through a connecting seat.

[0013] By adopting the above technical solution, when the moving frame needs to be controlled, the operator activates two opposing first hydraulic cylinders. The two opposing first hydraulic cylinders simultaneously drive the connecting plate to move, and the connecting plate then drives the moving frame to move, thereby achieving adjustment of the cutter head in one direction. The operator then activates two second hydraulic cylinders, which simultaneously drive the corresponding connecting plate to move, thereby adjusting the position of the cutter head and achieving adjustment of the cutter head in a second direction. This increases the range of movement of the cutter head, thereby changing the area of ​​the excavated cross section. At the same time, it reduces the number of steps for the operator to change the cutter head, improves the stability of the cutter head during operation, and thus improves the operator's excavation efficiency.

[0014] Preferably, the first support plate is rotatably connected in the first support groove, and the second support plate is rotatably connected in the second support groove, and the rotation axes of the first support plate and the second support plate are both arranged along the length direction of the housing;

[0015] The first support plate and the second support plate are connected to the tool holder through a control component. When the tool holder moves, the tool holder drive control component controls the first support plate and the second support plate to rotate synchronously in opposite directions.

[0016] The control assembly includes a control element, a first control lever, and a second control lever. A support base is provided on the inner wall of the housing. The control element is mounted on the support base. A trigger plate that cooperates with the control element is provided on the tool holder. One side of the control element is connected to the first control lever, and the other side is connected to the second control lever. The support base has opposing first and second control holes, both inclined downwards. The first control lever is slidably connected to the inner wall of the first control hole, and the second control lever is slidably connected to the inner wall of the second control hole. The end of the first control lever away from the support base is connected to a first support plate via a first connector, and the end of the second control lever away from the support base is connected to a second support plate via a second connector. The movable frame has two opposing sets of assist components, with one set of assist components corresponding to each of the first and second support plates.

[0017] By adopting the above technical solution, when the operator controls the tool holder to move vertically, the two sets of assist components are activated simultaneously and control the first support plate and the second support plate to rotate in opposite directions. At the same time, the tool holder drives the trigger plate to move, the trigger plate drives the control component to activate, and the control component then drives the first control lever and the second control lever to slide. The first control lever drives the first connecting member to activate, and the first connecting member then drives the first support plate to rotate. The second control lever drives the second connecting member to activate, and the second connecting member then drives the second connecting plate to rotate. After the first support plate and the second support plate tilt, the assist components are deactivated, so that when the tool holder moves vertically, the first support plate and the second support plate also provide support for the tool holder, reducing part of the burden on the two first hydraulic cylinders and reducing the possibility of relative movement between the tool holder and the moving frame, thereby further improving the stability of the tool holder during operation.

[0018] Preferably, the control component includes a control block and a control spring. A control groove is vertically formed on the side of the support base away from the first support plate. The control block is disposed in the control groove and is slidably connected to the inner wall of the control groove. The trigger plate abuts against the control block. The control spring is disposed in the control groove, with one end connected to the control block and the other end connected to the bottom of the control groove. The support base has a first support wheel and a second support wheel arranged opposite to each other. Both the first and second support wheels are rotatably connected to the support base. One side of the control block is connected to a first control rod via a first steel rope. The first steel rope wraps around the first support wheel once and is then connected to the first control rod. The other side of the control block is connected to a second control rod via a second steel rope. The second steel rope wraps around the second support wheel once and is then connected to the second control rod.

[0019] By adopting the above technical solution, when the operator makes vertical adjustments to the tool holder, the operator uses the assist component to provide assistance to the first and second support plates. When the tool holder moves, the tool holder drives the trigger plate to move, and the trigger plate drives the control block to move towards the bottom of the control groove. The control spring is in a compressed state, and the control block drives the first and second steel ropes to move. The first steel rope drives the first support wheel to rotate, and the second steel rope drives the second support wheel to rotate. The first steel rope then drives the first control rod to move away from the first support plate, and the second steel rope then drives the second control rod to move away from the second support plate. Under the action of the first and second connecting parts, the first and second support plates rotate in opposite directions, realizing the function of synchronous movement of the first and second support plates when the tool holder moves. This ensures that the first and second support plates can also provide support when the tool holder moves, improving the stability of the tool holder during movement. After the tool holder has moved, the first and second support plates continue to provide support for the tool holder, improving the stability of the cutter head during operation, thereby improving the digging efficiency of the cutter head.

[0020] Preferably, torsion springs are wound around the shafts of both the first and second support wheels.

[0021] By adopting the above technical solution, when the first steel rope drives the first support wheel to rotate and the second steel rope drives the second support wheel to rotate, the torsion spring is in a compressed state. When the operator controls the tool holder to reset, under the action of the control spring and the rebound force of the torsion spring, the first support wheel winds up the first steel rope, and the second support wheel winds up the second steel rope. At this time, the first control lever and the second control lever reset. Under the action of the first connecting piece and the second connecting piece, the first support plate and the second support plate rotate in opposite directions so that the first support plate and the second support plate continue to support the tool holder.

[0022] Preferably, the support base is provided with a first guide wheel and a second guide wheel arranged opposite to each other. Both the first guide wheel and the second guide wheel are rotatably connected to the support base. The first guide wheel is located on the side of the first support wheel near the first support plate. The first steel cable passes around the first guide wheel and is connected to the first control rod. The second guide wheel is located on the side of the second support wheel near the second support plate. The second steel cable passes around the second guide wheel and is connected to the second control rod.

[0023] By adopting the above technical solution, the prestress inside the first and second steel ropes is increased under the action of the first and second guide wheels. At the same time, the first and second steel ropes are guided, making it less likely for the first and second steel ropes to rub against the support base, reducing the possibility of breakage of the first and second steel ropes, so that the first and second steel ropes can control the corresponding first control rod and the corresponding second control rod more stably.

[0024] Preferably, the power assist assembly includes a power assist cylinder and a power assist plate. The power assist cylinder is connected to the moving frame, and the power assist plate is hinged to the output end of the power assist cylinder. The first support plate and the second support plate are disposed between two power assist plates that are arranged opposite to each other, and each of the first support plate and the second support plate corresponds to one power assist plate.

[0025] By adopting the above technical solution, when the operator controls the tool holder to move in the vertical direction, the operator activates the power-assisted cylinder, which drives the corresponding power-assisted plate to move, and the power-assisted plate drives the corresponding first support plate and second support plate to rotate. At the same time, the power-assisted plate rotates so that the first support plate and second support plate can rotate.

[0026] Preferably, both the side of the first support plate away from the second support plate and the side of the second support plate away from the first support plate are provided with guide arc surfaces.

[0027] By adopting the above technical solution, under the action of the guide arc surface, the first support plate and the second support plate are less likely to collide with the tool holder and be damaged during rotation, so that the first support plate and the second support plate can support the tool holder more stably.

[0028] Preferably, the movable frame is provided with a clamping assembly for clamping the tool holder. The clamping assembly includes a first clamping plate and a second clamping plate arranged opposite to each other. The first clamping plate and the second clamping plate are slidably connected to the movable frame along the length direction of the machine housing. A control gear is provided between the first clamping plate and the second clamping plate. Both the first clamping plate and the second clamping plate are meshed with the control gear. The movable frame is provided with a control cylinder, and the control cylinder is connected to the first clamping plate.

[0029] By adopting the above technical solution, when the operator needs to use the moving frame to control the movement of the tool holder, the operator activates the control cylinder. The control cylinder drives the first clamping plate to slide, the first clamping plate drives the control gear to rotate, and the control gear drives the second clamping plate to slide, so that the first and second clamping plates move towards the tool holder synchronously. The first and second clamping plates clamp the tool holder, making it difficult for the tool holder to move, reducing the possibility of relative displacement between the tool holder and the moving frame, and also reducing the possibility of the tool holder shaking when the moving frame moves subsequently.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By setting up a movable frame, a cutter head, a first drive unit, and a second drive unit, the first drive unit controls the movable frame to move along the width direction to adjust the movement of the cutter head, thus realizing the movement of the cutter head in the first direction. The second drive unit controls the cutter head to move along the vertical direction, thus realizing the movement of the cutter head in the second direction, so as to cut cross-sections of different areas. This reduces the steps for operators to change cutter heads of different sizes or change the diameter of the cutter head, saves some time, and thus improves the digging efficiency of operators.

[0032] 2. By setting up a first support plate, a second support plate, and a control component, when the operator controls the tool holder to move in the vertical direction, the control component controls the first support plate and the second support plate to rotate in opposite directions, thus realizing the function of the first support plate and the second support plate supporting the tool holder when adjusting the tool holder, so as to distribute the load-bearing force of the two second hydraulic cylinders, thereby improving the stability of the tool holder when moving;

[0033] 3. By setting up a clamping assembly, after the operator has adjusted the tool holder, the clamping assembly is activated and limits the tool holder, making it difficult for the tool holder and the moving frame to move relative to each other. This allows the operator to use the first drive component to control the movement of the moving frame and the tool holder, thus providing convenience for the operator to control the movement of the moving frame and the tool holder along the width direction of the machine casing. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0035] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the first support plate, the second support plate, and the movable frame, according to an embodiment of this application.

[0036] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the control component and the moving frame in an embodiment of this application;

[0037] Figure 4 This application embodiment is a structural diagram illustrating the positional relationship between the control element and the first and second control levers;

[0038] Figure 5 yes Figure 4 Enlarged structural diagram of section A in the middle;

[0039] Figure 6 yes Figure 1 Enlarged structural diagram of section B in the middle;

[0040] Figure 7 This is a structural schematic diagram illustrating the positional relationship between the clamping assembly and the tool holder in an embodiment of this application;

[0041] Figure 8 yes Figure 7Enlarged structural diagram of section C.

[0042] Explanation of reference numerals in the attached drawings: 1. Housing; 11. First driving component; 111. First hydraulic cylinder; 112. Connecting plate; 12. Second driving component; 121. Second hydraulic cylinder; 122. Connecting seat; 13. Support seat; 131. First control hole; 132. Second control hole; 133. Control groove; 134. First support wheel; 135. Second support wheel; 136. First guide wheel; 137. Second guide wheel; 14. Guide groove; 2. Moving frame; 21. First support groove; 22. Second support groove; 23. First support plate; 231. Moving groove; 232. Limiting groove; 24. Second support plate; 25. Guide arc surface; 26. Support rod; 261. 1. Leaving groove; 262. Support column; 263. Support spring; 27. Torsion spring; 28. Guide rail; 29. ​​Dovetail slide; 3. Tool holder; 31. Trigger plate; 4. Control assembly; 41. Control component; 411. Control block; 412. Control spring; 42. First control lever; 43. Second control lever; 44. First connector; 441. Connecting block; 442. Limiting block; 45. Second connector; 46. First steel rope; 47. Second steel rope; 5. Power assist assembly; 51. Power assist cylinder; 52. Power assist plate; 6. Clamping assembly; 61. First clamping plate; 62. Second clamping plate; 63. Dovetail slider; 64. Control gear; 65. Control cylinder. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0044] This application discloses a multi-directional movement device for the cutterhead of a variable cross-section tunnel boring machine. (Refer to...) Figure 1 A multi-directional moving device for the cutterhead of a variable cross-section tunneling machine includes a housing 1, a moving frame 2, and a cutter holder 3 for supporting the cutterhead. The moving frame 2 and the cutter holder 3 are both disposed in the housing 1. The housing 1 is provided with a first driving member 11 for controlling the moving frame 2 to reciprocate along the width direction of the housing 1. The cutter holder 3 is disposed in the moving frame 2. The moving frame 2 is provided with a second driving member 12 for controlling the cutter holder 3 to reciprocate along the vertical direction.

[0045] The operator activates the second drive unit 12, which controls the cutter head 3 to move vertically, adjusting the position of the cutter head on the cutter head 3. This achieves the first directional adjustment of the cutter head, allowing the cutter head to change the excavation cross-section. The operator then uses the first drive unit 11 to control the movement of the moving frame 2, which in turn moves the cutter head 3, changing the position of the cutter head on the cutter head 3. This achieves the second directional adjustment of the cutter head, allowing the cutter head to further change the excavation cross-section. At this point, under the action of the first drive unit 11, the second drive unit 12, the moving frame 2, and the cutter head 3, the cutter head position is adjusted, allowing the operator to control the tunneling machine to excavate cross-sections of different areas. This reduces the steps required for the operator to change the cutter head or its diameter, saving time and thus improving the excavation efficiency when using the tunneling machine.

[0046] Reference Figure 1 The second driving component 12 includes two opposing second hydraulic cylinders 121. The output ends of the two opposing second hydraulic cylinders 121 reciprocate vertically. Both opposing second hydraulic cylinders 121 are fixed on the moving frame 2, and the output ends of both second hydraulic cylinders 121 are fixed to the cutter head 3 via connecting seats 122. When the operator needs to use the tunneling machine, the operator controls the output ends of the two second hydraulic cylinders 121 to extend, which is the initial state of the machine frame during operation. When it is necessary to change the excavation cross-section, the operator activates the two second hydraulic cylinders 121 again. The output ends of the two second hydraulic cylinders 121 reset and drive the cutter head 3 to move, thereby changing the movement of the cutter head and realizing the movement of the cutter head 3 and the cutter head in one direction, thus providing convenience for the operator to change the cross-sectional area.

[0047] Reference Figure 2 To reduce the load on the output ends of the two second hydraulic cylinders 121, the movable frame 2 is provided with a first support groove 21 and a second support groove 22 arranged opposite to each other. A first support plate 23 is provided in the first support groove 21, and a second support plate 24 is provided in the second support groove 22. The sides of the first support plate 23 and the second support plate 24 away from the movable frame 2 both abut against the tool holder 3. At this time, under the action of the first support plate 23 and the second support plate 24, the load on the two second hydraulic cylinders 121 is distributed, reducing the possibility of damage to the second hydraulic cylinders 121, so that the operator can use the second hydraulic cylinders 121 to control the tool holder 3.

[0048] Reference Figure 2 and Figure 3To improve the stability of the tool holder 3 when it moves vertically, a first support plate 23 is rotatably connected in a first support groove 21, and a second support plate 24 is rotatably connected in a second support groove 22. The rotation axes of the first support plate 23 and the second support plate 24 are set along the length of the housing 1. The first support plate 23 and the second support plate 24 are connected to the tool holder 3 through a control assembly 4. When the tool holder 3 moves, the tool holder 3 drives the control assembly 4 to control the first support plate 23 and the second support plate 24 to rotate synchronously in opposite directions, so that when the tool holder 3 moves, the first support plate 23 and the second support plate 24 rotate synchronously, allowing the first support plate 23 and the second support plate 24 to continue to provide support for the tool holder 3.

[0049] Reference Figure 2 and Figure 3 The control component 4 includes a control element 41, a first control lever 42 and a second control lever 43. A support base 13 is fixed on the inner wall of the housing 1. The control element 41 is mounted on the support base 13. A trigger plate 31 that cooperates with the control element 41 is fixed on the tool holder 3.

[0050] Reference Figure 3 and Figure 4 The support base 13 has a first control hole 131 and a second control hole 132 that are oppositely arranged, with the first control hole 131 and the second control hole 132 facing opposite directions and inclined downwards. The first control rod 42 is slidably connected to the inner wall of the first control hole 131, and the second control rod 43 is slidably connected to the inner wall of the second control hole 132. The control element 41 is connected to the first control rod 42 and the second control rod 43.

[0051] Reference Figure 2 and Figure 3 The end of the first control lever 42 away from the control member 41 is connected to the first support plate 23 through the first connector 44, and the end of the second control lever 43 away from the control member 41 is connected to the second support plate 24 through the second connector 45.

[0052] Reference Figure 2 and Figure 5 Both the first connecting member 44 and the second connecting member 45 include a connecting block 441 and a limiting block 442. The first support plate 23 and the second support plate 24 each have a vertically oriented moving groove 231 on opposite sides. The connecting block 441 is slidably connected to the inner wall of the moving groove 231. The limiting block 442 is fixed to the connecting block 441. A limiting groove 232 is formed in the inner wall of the moving groove 231, and the limiting block 442 is slidably connected to the inner wall of the limiting groove 232. The end of the first control rod 42 away from the control member 41 is hinged to the corresponding connecting block 441. The end of the second control rod 43 away from the control member 41 is also hinged to the corresponding connecting block 441. The pivot between the first control rod 42, the second control rod 43, and the corresponding connecting block 441 is arranged along the length of the housing 1.

[0053] Reference Figure 2 and Figure 4 The control component 41 includes a control block 411 and a control spring 412. A control groove 133 is vertically formed on the side of the support base 13 near the tool holder 3. The control block 411 is disposed in the control groove 133 and slidably connected to the inner wall of the control groove 133. The control spring 412 is disposed in the control groove 133, with one end fixed to the control block 411 and the other end fixed to the bottom of the control groove 133. One side of the control block 411 is connected to the first control rod 42 via a first steel rope 46, and the other side is connected to the second control rod 43 via a second steel rope 47.

[0054] To reduce the possibility of damage caused by friction between the first steel rope 46 and the second steel rope 47 and the support base 13, the support base 13 is provided with a first support wheel 134 and a second support wheel 135 arranged opposite to each other. The first support wheel 134 and the second support wheel 135 are rotatably connected to the support base 13. The first steel rope 46 is wound around the first support wheel 134 twice and then connected to the first control rod 42. The second steel rope 47 is wound around the second support wheel 135 twice and then connected to the second control rod 43.

[0055] Reference Figure 3 and Figure 4 The movable frame 2 is equipped with two sets of opposing assist components 5. A first support plate 23 and a second support plate 24 are disposed between the two opposing sets of assist components 5, and each of the first support plate 23 and the second support plate 24 corresponds to one set of assist components 5. Each assist component 5 includes an assist cylinder 51 and an assist plate 52. The assist cylinder 51 is fixed to the movable frame 2, and the assist plate 52 is hinged to the output end of the corresponding assist cylinder 51. In this embodiment, the assist plate 52 is configured as an electromagnetic plate.

[0056] When the operator moves the tool holder 3 vertically, the operator activates two assist cylinders 51. The two assist cylinders 51 drive the corresponding assist plates 52 to move toward the first support plate 23 and the second support plate 24 respectively. When the first support plate 23 and the second support plate 24 rotate, the output ends of the two assist cylinders 51 are reset, and at the same time, the output ends of the two second cylinders 121 are reset and drive the tool holder 3 to move.

[0057] The tool holder 3 then moves the trigger plate 31, which contacts the control block 411 and moves it toward the support base 13, while the control spring 412 is compressed. Simultaneously, the control block 411 pulls the first steel rope 46 and the second steel rope 47. The first steel rope 46 causes the first control rod 42 to slide, and the second steel rope 47 causes the second control rod 43 to slide. The first control rod 42 then moves the corresponding connecting block 441 and the limiting block 442 along the corresponding connecting groove, and the second control rod 43 then moves the corresponding connecting block 441 and the limiting block 442 along the corresponding connecting groove, causing the first support plate 23 and the second support plate 24 to rotate in opposite directions. This achieves the function of synchronous rotation of the first support plate 23 and the second support plate 24 during the movement of the tool holder 3, thus supporting the tool holder 3 and improving its stability during movement.

[0058] After the position of the cutter head 3 is adjusted, the first support plate 23 and the second support plate 24 continue to support the cutter head 3, which improves the stability of the cutter head during subsequent work and thus improves the digging efficiency of the operator.

[0059] Reference Figure 4 To further reduce the possibility of damage to the first steel rope 46 and the second steel rope 47, the support base 13 is provided with a first guide wheel 136 and a second guide wheel 137 arranged opposite to each other. Both the first guide wheel 136 and the second guide wheel 137 are rotatably connected to the support base 13. The first guide wheel 136 is located on the side of the first support wheel 134 near the first support plate 23, and the second guide wheel 137 is located on the side of the second support wheel 135 near the second support plate 24. The first steel rope 46 wraps around the first support wheel 134 twice, then passes around the first guide wheel 136 before connecting to the first control rod 42. The second steel rope 47 wraps around the second support wheel 135 twice, then passes around the second guide wheel 137 before connecting to the second control rod 43.

[0060] Under the action of the first support wheel 134, the first guide wheel 136, the second support wheel 135, and the second guide wheel 137, the prestress inside the first steel rope 46 and the second steel rope 47 is increased. The first guide wheel 136 and the second guide wheel 137 provide guidance for the first steel rope 46 and the second steel rope 47 respectively, further reducing the possibility of the first steel rope 46 and the second steel rope 47 breaking upon contact with the support seat 13, thereby improving the stability when the first steel rope 46 and the second steel rope 47 control the first control rod 42 and the second control rod 43 respectively.

[0061] Reference Figure 3 and Figure 4In order to improve the stability of the first support plate 23 and the second support plate 24 when they move, a guide arc surface 25 is provided on the opposite side of the first support plate 23 and the second support plate 24. Under the action of the guide arc surface 25, the contact area between the first support plate 23 and the second support plate 24 is reduced, and the friction between the first support plate 23 and the second support plate 24 is reduced, so that the first support plate 23 and the second support plate 24 can rotate more stably.

[0062] Reference Figure 4 and Figure 5 In order to improve the support capacity of the first support plate 23 and the second support plate 24 for the tool holder 3, a support rod 26 is provided on the opposite side of the first support plate 23 and the second support plate 24. The end of the support rod 26 near the movable frame 2 is provided with a relief groove 261 along its own length direction. A support column 262 is provided in the relief groove 261. The support column 262 is slidably connected to the inner wall of the relief groove 261. A support spring 263 is provided in the relief groove 261. One end of the support spring 263 is connected to the support column 262 and the other end is connected to the bottom of the relief groove 261.

[0063] When the first support plate 23 and the second support plate 24 rotate, the first support plate 23 and the second support plate 24 drive the corresponding support rod 26 and support column 262 to rotate. At the same time, the support rod 26 rotates. When the support column 262 contacts the movable frame 2, the support spring 263 is in a compressed state. Under the action of the rebound force of the support spring 263, the support column 262 and the support rod 26 can support the corresponding first support plate 23 and the corresponding second support plate 24 relatively stably, so that the first support plate 23 and the second support plate 24 can support the tool holder 3.

[0064] Reference Figure 4 and Figure 6 A torsion spring 27 is wound around the shaft of the first support wheel 134 and the second support wheel 135. When the first steel rope 46 and the second steel rope 47 move, the first support wheel 134 and the second support wheel 135 rotate, and the torsion spring 27 is in a compressed state.

[0065] When the first support plate 23 and the second support plate 24 need to be reset, the operator activates the power-assisted cylinder. Simultaneously, the power-assisted plate 52 is energized and attracts the corresponding first support plate 23 and the corresponding second support plate 24. The output end of the power-assisted cylinder resets and drives the corresponding power-assisted plate 52 to move. The power-assisted plate 52 then drives the corresponding first support plate 23 and the second support plate 24 to rotate in opposite directions. At the same time, the output ends of the two second hydraulic cylinders 121 extend to move the tool holder 3 to its initial state. Under the action of the torsion spring 27 and the control spring 412, the control block 411 drives the first steel rope 46 and the second steel rope 47 to reset. The first support wheel 134 and the second support wheel 135 respectively wind up the first steel rope 46 and the second steel rope 47, so that the first control lever 42 and the second control lever 43 can reset. The first control lever 42 and the second control lever 43 then drive the first support plate 23 and the second support plate 24 to rotate, thus facilitating the reset of the first support plate 23 and the second support plate 24. When the first support plate 23 and the second support plate 24 are perpendicular to the movable frame 2, the tool holder 3 is reset.

[0066] Reference Figure 1 and Figure 7 The first driving component 11 includes two opposing first hydraulic cylinders 111, which are arranged vertically within the housing 1 and fixed to the inner wall of the housing 1. The output ends of the opposing first hydraulic cylinders 111 are fixed to the movable frame 2 via connecting plates 112. The movable frame 2 is provided with guide rails 28, and the inner wall of the housing 1 is provided with guide grooves 14 that cooperate with the guide rails 28.

[0067] The operator activates the two first hydraulic cylinders 111, which drive the corresponding connecting plates 112 to move. The connecting plates 112 then drive the moving frame 2 to move. With the cooperation of the guide rail 28 and the guide groove 14, the operator can easily move the connecting frame. The movement of the connecting frame then drives the cutter holder 3 and the cutter head to move, so as to realize the movement of the cutter holder 3 and the cutter head in a second direction, which expands the working area of ​​the cutter head and further increases the cross-sectional area of ​​the tunneling machine, so that the operator can change the cross-sectional area of ​​the tunneling machine.

[0068] Reference Figure 7 and Figure 8To improve the stability of the moving frame 2 when it moves the tool holder 3, the moving frame 2 is equipped with a clamping assembly 6 for clamping the tool holder 3. The clamping assembly 6 includes a first clamping plate 61 and a second clamping plate 62 arranged opposite to each other. The first clamping plate 61 and the second clamping plate 62 are both slidably connected to the moving frame 2. The first clamping plate 61 and the second clamping plate 62 are both provided with dovetail-shaped sliders 63. The moving frame 2 has dovetail-shaped grooves 29 corresponding to the dovetail-shaped sliders 63. A control gear 64 is provided between the first clamping plate 61 and the second clamping plate 62. The control gear 64 is rotatably connected to the moving frame 2. The first clamping plate 61 and the second clamping plate 62 are both meshed with the control gear 64. A control cylinder 65 is fixed on the moving frame 2 and is fixed to the first clamping plate 61.

[0069] When the operator needs to control the moving frame 2, the operator activates the control cylinder 65. The control cylinder 65 drives the first clamping plate 61 to slide, the first clamping plate 61 drives the control gear 64 to rotate, and the control gear 64 then drives the second clamping plate 62 to slide. Under the action of the control gear 64, the first clamping plate 61 and the second clamping plate 62 slide in opposite directions. After the first clamping plate 61 and the second clamping plate 62 clamp the tool holder 3, the tool holder 3 is fixed. At this time, under the action of the first clamping plate 61 and the second clamping plate 62, the possibility of relative displacement between the tool holder 3 and the moving frame 2 is not likely to occur when the moving frame 2 moves, thus providing convenience for the operator to control the movement of the moving frame 2. Moreover, the clamping of the tool holder 3 by the first clamping plate 61 and the second clamping plate 62 improves the stability of the tool holder during subsequent operation.

[0070] The implementation principle of this application embodiment is as follows: When it is necessary to change the cross-section of the tunneling machine's excavation, the operator uses the second drive component 12 to move the cutterhead 3 vertically, thereby adjusting the cutterhead 3 in the first direction to expand the working range of the cutterhead and change the cross-section during tunneling. The operator then uses the first drive component 11 to move the movable frame 2, which in turn moves the cutterhead 3, achieving a second-direction adjustment of the cutterhead 3, further expanding the working range of the cutterhead and further changing the cross-section during tunneling. Under the action of the first drive component 11, the second drive component 12, the movable frame 2, and the cutterhead 3, the steps of changing the cutterhead or altering its diameter are reduced, saving time and facilitating changes to the excavation cross-section, thus improving the tunneling efficiency.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-directional movement device for the cutterhead of a variable cross-section tunneling machine, characterized in that: The device includes a housing (1), a movable frame (2), and a tool holder (3) for supporting the tool head. The movable frame (2) and the tool holder (3) are both disposed in the housing (1). The housing (1) is provided with a first driving member (11), which is connected to the movable frame (2). The first driving member (11) drives the movable frame (2) to reciprocate along the width direction of the housing (1). The tool holder (3) is slidably connected in the movable frame (2) in the vertical direction. The movable frame (2) is provided with a second driving member (12), which is connected to the tool holder (3). The movable frame (2) is provided with a first support groove (21) and a second support groove (22) arranged opposite to each other. The first support groove (21) is provided with a first support plate (23), and the second support groove (22) is provided with a second support plate (24). The side of the first support plate (23) and the second support plate (24) away from the movable frame (2) both abut against the tool holder (3). The first support plate (23) is rotatably connected in the first support groove (21), and the second support plate (24) is rotatably connected in the second support groove (22). The rotation axes of the first support plate (23) and the second support plate (24) are both arranged along the length direction of the housing (1). The first support plate (23) and the second support plate (24) are connected to the tool holder (3) through the control component (4). When the tool holder (3) moves, the tool holder (3) drives the control component (4) to control the first support plate (23) and the second support plate (24) to rotate synchronously in opposite directions. The control component (4) includes a control element (41), a first control lever (42), and a second control lever (43). A support base (13) is provided on the inner wall of the housing (1). The control element (41) is mounted on the support base (13). A trigger plate (31) cooperating with the control element (41) is provided on the tool holder (3). One side of the control element (41) is connected to the first control lever (42), and the other side is connected to the second control lever (43). The support base (13) has opposing first control holes (131) and second control holes (132), both of which are inclined downwards. The first control rod (42) is slidably connected to the inner wall of the first control hole (131), and the second control rod (43) is slidably connected to the inner wall of the second control hole (132). The end of the first control rod (42) away from the support base (13) is connected to the first support plate (23) through the first connector (44), and the end of the second control rod (43) away from the support base (13) is connected to the second support plate (24) through the second connector (45). The movable frame (2) is provided with two sets of assist components (5) arranged opposite to each other. A set of assist components (5) is provided at both the first support plate (23) and the second support plate (24). The control component (41) includes a control block (411) and a control spring (412). A control groove (133) is vertically formed on the side of the support base (13) away from the first support plate (23). The control block (411) is disposed in the control groove (133) and is slidably connected to the inner wall of the control groove (133). The trigger plate (31) abuts against the control block (411). The control spring (412) is disposed in the control groove (133), with one end connected to the control block (411) and the other end connected to the bottom of the control groove (133). The support base (13)... The control block (411) is provided with a first support wheel (134) and a second support wheel (135) arranged opposite to each other. Both the first support wheel (134) and the second support wheel (135) are rotatably connected to the support base (13). One side of the control block (411) is connected to the first control rod (42) through a first steel rope (46). The first steel rope (46) is connected to the first control rod (42) after wrapping around the first support wheel (134) once. The other side of the control block (411) is connected to the second control rod (43) through a second steel rope (47). The second steel rope (47) is connected to the second control rod (43) after wrapping around the second support wheel (135) once.

2. The variable cross-section tunneling machine cutterhead multi-directional moving device according to claim 1, characterized in that: The first driving component (11) includes two first hydraulic cylinders (111) arranged opposite to each other. The output ends of the two first hydraulic cylinders (111) arranged opposite to each other move back and forth in the horizontal direction. The output ends of the two first hydraulic cylinders (111) arranged opposite to each other are connected to the moving frame (2) through the connecting plate (112). The side of the two first hydraulic cylinders (111) arranged opposite to each other away from the moving frame (2) is connected to the inner wall of the housing (1). The second drive unit (12) includes two second cylinders (121) arranged opposite to each other. The output ends of the two second cylinders (121) arranged opposite to each other move back and forth in the vertical direction. One end of each of the two second cylinders (121) arranged opposite to each other is connected to the moving frame (2), and the other end is connected to the tool holder (3) through the connecting seat (122).

3. The variable cross-section tunneling machine cutterhead multi-directional movement device according to claim 1, characterized in that: A torsion spring (27) is wound around the shaft of both the first support wheel (134) and the second support wheel (135).

4. The variable cross-section tunneling machine cutterhead multi-directional moving device according to claim 1, characterized in that: The support base (13) is provided with a first guide wheel (136) and a second guide wheel (137) arranged opposite to each other. The first guide wheel (136) and the second guide wheel (137) are rotatably connected to the support base (13). The first guide wheel (136) is located on the side of the first support wheel (134) close to the first support plate (23). The first steel rope (46) passes around the first guide wheel (136) and is connected to the first control rod (42). The second guide wheel (137) is located on the side of the second support wheel (135) close to the second support plate (24). The second steel rope (47) passes around the second guide wheel (137) and is connected to the second control rod (43).

5. The variable cross-section tunneling machine cutterhead multi-directional movement device according to claim 1, characterized in that: The assist component (5) includes an assist cylinder (51) and an assist plate (52). The assist cylinder (51) is connected to the movable frame (2). The assist plate (52) is hinged to the output end of the assist cylinder. The first support plate (23) and the second support plate (24) are arranged between two opposing assist plates (52). The first support plate (23) and the second support plate (24) each correspond to one assist plate (52).

6. The variable cross-section tunneling machine cutterhead multi-directional movement device according to claim 1, characterized in that: The first support plate (23) is provided with a guide arc surface (25) on the side away from the second support plate (24) and the second support plate (24) is provided with a side away from the first support plate (23).

7. The variable cross-section tunneling machine cutterhead multi-directional movement device according to claim 1, characterized in that: The movable frame (2) is provided with a clamping assembly (6) for clamping the tool holder (3). The clamping assembly (6) includes a first clamping plate (61) and a second clamping plate (62) arranged opposite to each other. The first clamping plate (61) and the second clamping plate (62) are slidably connected to the movable frame (2) along the length direction of the housing (1). A control gear (64) is provided between the first clamping plate (61) and the second clamping plate (62). Both the first clamping plate (61) and the second clamping plate (62) are meshed with the control gear (64). The movable frame (2) is provided with a control cylinder (65), which is connected to the first clamping plate (61).

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