An active vibration reduction mechanism for a tunnel boring machine used in civil construction

Abstract

The present invention belongs to the technical field of civil construction, and discloses an active vibration reduction mechanism for a tunnel boring machine for civil construction. The active vibration reduction mechanism for a tunnel boring machine for civil construction includes a shield machine body and a cutterhead. A drive motor is fixedly connected to the left side of the shield machine body. A stabilizing mechanism is provided on the shield machine body and located on the outside of the drive motor. The output end of the drive motor is fixedly connected to the cutterhead. The cutterhead is provided with an active vibration reduction mechanism, and a monitor is also provided on the shield machine body. The active vibration reduction mechanism for a tunnel boring machine for civil construction, through the design of a stabilizing mechanism and the monitoring of a monitor, suppresses the vibration generated during the operation of the drive motor, and also suppresses the output end of the drive motor, thereby stabilizing the connection between the drive motor and the cutterhead, thereby effectively improving the stability between the drive motor and the cutterhead, and reducing the noise generated by vibration during the operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of civil construction, and in particular to an active vibration reduction mechanism for a tunnel boring machine in civil construction. Background Art

[0002] With the continuous development of urban construction, the utilization of underground space is increasing. Shield construction, as a commonly used underground engineering construction method, plays an important role in urban underground railways, subways, tunnels and other projects. However, the environmental vibration and noise problems generated during shield construction have attracted widespread attention. Therefore, controlling and reducing the impact of shield construction on environmental vibration and noise has become an urgent problem that needs to be solved.

[0003] During the use of the shield machine, soil excavation and the drive parts driving the cutter head to rotate will generate vibrations. Long-term use will cause certain damage to the components. In addition, during the operation of the equipment, the vibration source cannot be well suppressed, resulting in the noise generated cannot be well suppressed. Therefore, we urgently need an active vibration reduction mechanism for tunnel boring machines in civil construction to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide an active vibration reduction mechanism for a tunnel boring machine for civil engineering construction, which solves the problems raised in the background art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an active vibration reduction mechanism for a tunnel boring machine for civil engineering construction, comprising a shield machine body and a cutterhead, characterized in that a drive motor is fixedly connected to the left side of the shield machine body, a stabilizing mechanism is provided on the shield machine body and located outside the drive motor, an output end of the drive motor is fixedly connected to the cutterhead, an active vibration reduction mechanism is provided on the cutterhead, and a monitor is also provided on the shield machine body;

[0006] The stabilizing mechanism comprises:

[0007] A plurality of straight rods are fixedly connected to the left side of the shield machine body and located on the outside of the drive motor. The plurality of straight rods are equidistant and distributed in a ring shape with the central axis of the drive motor as the center. A mounting frame is fixedly connected to the center position of the straight rod away from the drive motor.

[0008] A moving assembly, the moving assembly being used to drive the vibration-damping element on the straight rod to move;

[0009] A vibration reduction component, which is used to provide support for the drive motor and reduce vibration;

[0010] A laminating plate, the laminating plate being fixedly connected to the square plate, the laminating plate being fixedly connected to a first silicone pad, the first silicone pad being in contact with the driving motor;

[0011] A bonding component, the bonding component is used to cooperate with the vibration reduction device to protect the drive motor while reducing vibration;

[0012] The active vibration reduction mechanism comprises:

[0013] Annular plate 1, said annular plate 1 being fixedly connected to the annular inner wall of the cutter disc, annular plate 2 being further provided on the inner side of said annular plate 1, said annular plate 1 and annular plate 2 being fixedly connected via a connecting frame, said annular plate 1 and annular plate 2 respectively defining annular cavity 1 and annular cavity 2, and support frames being fixedly connected to the inner walls on both sides of said annular cavity 2;

[0014] An annular vibration damping assembly is used to dampen the vibration of the cutter disc and reduce the vibration frequency of the cutter disc during use.

[0015] Preferably, the moving component includes a hydraulic cylinder 1, which is fixedly connected to the left and right sides of the mounting frame respectively, and the output ends of the two hydraulic cylinders 1 are fixedly connected to a connecting rod, and rectangular through grooves are provided on the left and right sides of the mounting frame, and rails are fixedly connected in the two rectangular through grooves, and a sliding block is slidably connected in the rails, and one end of the connecting rod away from the hydraulic cylinder 1 is fixedly connected to the sliding block, and one end of the spring 1 is fixedly connected to the mounting frame and located on the outside of the hydraulic cylinder 1, and the other end of the spring 1 is fixedly connected to the connecting rod.

[0016] Through the above technical solution, the output end of the hydraulic cylinder 1 of the present application drives the sliding block to move in the track through the connecting rod. The spring 1 is used to push the sliding block outward and reset it through the reset ability of the spring 1 when the sliding block pushes the hydraulic cylinder 1. When in use, the hydraulic cylinder 1 will drive the sliding block to the middle position of the track. This position can be adjusted. After positioning, the hydraulic cylinder 1 will limit the sliding block, thereby ensuring that the hydraulic cylinder 1 cooperates with the spring 1 to push the sliding block outward to the positioning position.

[0017] Preferably, the vibration damping assembly includes a U-shaped frame 1, which is fixedly connected to the lower surface of the sliding block, a round rod 1 is fixedly connected to the open end of the U-shaped frame 1, and a support rod is hinged on the round rod 1, a telescopic rod 1 is fixedly connected to the center position of the lower surface of the placement frame, and the movable end of the telescopic rod 1 is fixedly connected to a square plate, and the left and right sides of the upper surface of the square plate are fixedly connected to the U-shaped frame 2, the open end of the U-shaped frame 2 is fixedly connected to the round rod 2, and the support rod and one end away from the round rod 1 are hinged to the round rod 2, and the two support rods are arranged in an eight-shaped shape.

[0018] Through the above technical solution, the U-shaped frame of the present application moves with the upper sliding block, and the support rod acts to connect the U-shaped frame 1 and the U-shaped frame 2. The two support rods are arranged in an "eight" shape, and the telescopic rod 1 is used to support the square plate. When the square plate vibrates, the upward force of the square plate will drive the two sliding blocks to move relative to each other. When the sliding block moves, it will push the output end of the hydraulic cylinder 1 to move, but the movement of the output end of the hydraulic cylinder 1 causes the spring 1 to deform. After the deformation, the spring 1 releases the elasticity, thereby pushing the sliding block outward to the positioning position. When the sliding block is reset, the square plate will cooperate with the telescopic rod 1 to push inward, thereby weakening the vibration force generated. The square plate cooperates with the fitting component to fit the drive motor, thereby effectively weakening the vibration force generated by the drive motor.

[0019] Preferably, the fitting component includes an extension rod, which is fixedly connected to the square plate, and the end of the extension rod away from the square plate is fixedly connected to hydraulic cylinder 2, the output end of the hydraulic cylinder 2 is fixedly connected to one end of the vertical rod, and the other end of the vertical rod is fixedly connected to the arc plate, and one end of the spring support rod is fixedly connected to the side of the arc plate away from the vertical rod, and the other end of the spring support rod is fixedly connected to the bracket, and the bracket is rotatably connected to a roller through a bearing hole provided in the bearing hole, and the roller is covered with silicone pad 2, and the roller is in contact with the output port of the drive motor through the silicone pad 2.

[0020] Through the above technical solution, the silicone pad 1 of the present application contacts the drive motor. Since several silicone pads 1 are provided, the drive motor can be wrapped around. The silicone pad 1 is used to provide protection for the drive motor. The vertical rod on the extension rod is placed vertically. The number of vertical rods is the same as the number of square plates. The arc plate connected to the vertical rod is located at the output end of the drive motor. Since the output end of the drive motor needs to be connected to the cutter disc through a transmission rod, when the drive motor is running, the vibration generated by the body will drive the output end to vibrate. Therefore, it is necessary to suppress the vibration of the drive motor itself while suppressing the vibration of the output port of the drive motor, so as to provide a vibration reduction and stabilization effect for the cutter disc during operation. At the same time, when the silicone pad 2 on the roller contacts the output end of the drive motor and the drive motor and the cutter disc are connected, the silicone pad 2 does not affect the rotation of the output shaft of the drive motor. The spring support rod is used to support the bracket, so as to keep the roller in contact with the output end of the drive motor. The spring support rod can also suppress vibration through the extension process.

[0021] Preferably, the annular vibration damping assembly includes an annular drive guide rail, which is fixedly connected to the support frame, and a number of drive blocks are slidably connected to the annular drive guide rail. An annular track is fixedly connected to the inner wall of the annular plate 2 and away from the annular plate 1, and an annular slider is slidably connected to the annular track, and the left and right sides of the annular slider are respectively fixedly connected to the corresponding drive blocks, and a number of protrusion blocks are fixedly connected to the annular slider.

[0022] Through the above technical solution, the annular plate 1 of the present application is fixedly connected to the inner wall of the cutter disc, the annular plate 2 is located on the inner side of the cutter disc and is fixedly connected through a connecting frame, the support frame is annular, and is used to place the annular drive guide rail on the support frame, the drive block is slidably connected to the annular drive guide rail, the annular track is also annular, and the annular track is used as an auxiliary track to enable the annular slider to run smoothly, the drive track and the drive block serve as the driving parts of the annular slider to drive it to rotate, and the raised block on the annular slider enables the ejection element provided on the circular ring plate 2 to be ejected in an orderly manner.

[0023] Preferably, the annular plate 2 is provided with an annular through hole 1 on one side close to the annular plate 1, the annular plate 2 is fixedly connected to the annular frame, the left and right sides of the annular frame are fixedly connected to rectangular plates, the opposite sides of the two rectangular plates are fixedly connected to telescopic rods 2, the movable ends of the two telescopic rods 2 are fixedly connected to the mounting plate, an ejector plate is provided between the two mounting plates, and the ejector plate is fixedly connected to the mounting plate, the outer side of the telescopic rod 2 is sleeved with a spring 2, and one end of the spring 2 is fixedly connected to the telescopic rod 2, and the other end of the spring 2 is fixedly connected to the mounting plate, one end of the ejector plate is in contact with the surface of the annular slider, and the other end of the ejector plate is located between the annular plate 1 and the annular plate 2.

[0024] Through the above technical solution, the spring 2 of the present application is fixedly connected to the protruding plate provided on the telescopic rod 2, and the other end of the spring 2 is fixedly connected to the mounting plate. The telescopic rod 2 and the spring 2 are used to retract the ejection plate after extending outward, providing a supporting force for the ejection plate, so that the ejection plate can always cooperate with the protruding block on the annular slider to extend and retract. There are multiple ejection plates, which are arranged at equal distances inside the annular plate 2.

[0025] Preferably, an arc-shaped partition is provided in the annular cavity one, and the left and right sides of the arc-shaped partition are in contact with the inner wall of the annular cavity one. Partitions are fixedly connected in the annular cavity one and on the front and rear sides of the arc-shaped partition, and the front and rear sides of the arc-shaped partition are in contact with the partition. There are multiple partitions, two in a group, which are arranged in an annular shape in the annular cavity one. An annular through hole two is provided on the annular plate one and on one side close to the annular plate two. The ejection plate is located between the annular plate one and the annular plate two, and the end face is fixedly connected to the arc-shaped partition.

[0026] Through the above technical solution, a number of partitions are arranged in the annular cavity of the present application, and the arc-shaped partition is located between two partitions. The number of the arc-shaped partitions is the same as the number of the ejection plates. When the ejection plates move outward, they will push the arc-shaped partitions. When the ejection plates are reset, the arc-shaped partitions will follow and reset.

[0027] Preferably, a plurality of metal balls are provided inside the annular plate and between the two partitions. The metal balls are in contact with the partitions and are located on a side away from the ejection plate.

[0028] Through the above technical solution, a number of metal balls are arranged between each partition of the present application. When the cutter disc vibrates during use, the metal balls will be driven to vibrate. At this time, there is still a gap between the metal balls in the annular plate. When the ejection plate is ejected outward and the metal balls in the partition are compressed through the arc-shaped partition, the space where the metal balls exist is gradually reduced, and the movement space of the metal balls is reduced, thereby increasing the collision frequency between the metal balls, thereby consuming the vibration generated by the cutter disc, and the metal balls also increase the weight of the edge of the cutter disc. Since the metal balls arranged between each partition are of equal weight, they also provide a balancing effect for the cutter disc.

[0029] By adopting the above technical solution, the beneficial effects of the present invention are:

[0030] 1. The active vibration reduction mechanism of the tunnel boring machine used in civil engineering construction, through the design of the stabilizing mechanism and the monitoring of the monitor, suppresses the vibration generated by the drive motor during operation, and also suppresses the output end of the drive motor, thereby stabilizing the connection between the drive motor and the cutterhead, thereby effectively improving the stability between the drive motor and the cutterhead, and reducing the noise generated by vibration during equipment operation.

[0031] 2. The active vibration reduction mechanism of the tunnel boring machine used in this civil engineering construction suppresses the vibration generated by the cutterhead during operation through the design of the active vibration reduction mechanism, and increases the weight of the cutterhead in combination with metal balls, thereby providing a certain degree of stability for the operation of the cutterhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the front view structure of the present invention;

[0034] Figure 3 For the present invention Figure 2 AA cross-sectional structural diagram;

[0035] Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of the middle BB;

[0036] Figure 5 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of CC;

[0037] Figure 6 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0038] Figure 7 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0039] Figure 8 For the present invention Figure 4 The enlarged structural diagram at C in the middle;

[0040] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point D in the middle.

[0041] In the figure: 1. Shield machine body; 2. Cutterhead; 3. Stabilizing mechanism; 4. Active vibration reduction mechanism; 5. Monitor; 6. Drive motor;

[0042] 31. Moving assembly; 311. Straight rod; 312. Mounting frame; 313. Hydraulic cylinder 1; 314. Connecting rod; 315. Rectangular slot; 316. Track; 317. Sliding block; 318. Spring 1;

[0043] 32. Vibration reduction assembly; 321. U-shaped frame 1; 322. Round rod 1; 323. Support rod; 324. Telescopic rod 1; 325. Square plate; 326. U-shaped frame 2; 327. Round rod 2;

[0044] 33. Laminating assembly; 331. Laminating plate; 332. Silicone pad 1; 333. Extension rod; 334. Hydraulic cylinder 2; 335. Vertical rod; 336. Curved plate; 337. Spring support rod; 338. Bracket; 339. Roller; 3310. Silicone pad 2;

[0045] 41. Annular vibration damping assembly; 411. Annular plate one; 412. Annular plate two; 413. Annular cavity one; 414. Annular cavity two; 415. Support frame; 416. Annular drive rail; 417. Drive block; 418. Annular track; 419. Annular slider; 4120. Raised block; 4121. Annular through hole one; 4122. Annular frame; 4123. Rectangular plate; 4124. Telescopic rod two; 4125. Mounting plate; 4126. Ejector plate; 4129. Arc partition; 4130. Partition; 4131. Annular through hole two; 4132. Metal ball; 4133. Spring two. DETAILED DESCRIPTION

[0046] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] See also Figure 1-9 The present invention provides a technical solution: an active vibration reduction mechanism for a tunnel boring machine for civil engineering construction, comprising a shield machine body 1 and a cutterhead 2. A drive motor 6 is fixedly connected to the left side of the shield machine body 1. A stabilizing mechanism 3 is provided on the shield machine body 1 and outside the drive motor 6. The output end of the drive motor 6 is fixedly connected to the cutterhead 2. An active vibration reduction mechanism 4 is provided on the cutterhead 2. A monitor 5 is also provided on the shield machine body 1.

[0048] The stabilizing mechanism 3 includes:

[0049] The moving component 31 is used to drive the vibration reduction device to move;

[0050] The vibration reduction assembly 32 is used to provide support for the drive motor 6 and reduce vibration;

[0051] The laminating component 33 is used to cooperate with the vibration reduction device to protect the drive motor 6 while reducing vibration;

[0052] The active vibration reduction mechanism 4 includes:

[0053] The annular vibration-damping component 41 is used to reduce the vibration of the cutter head 2 and reduce the vibration frequency of the cutter head 2 during use.

[0054] The moving assembly 31 includes a plurality of straight rods 311, which are fixedly connected to the left side of the shield machine body 1 and are located on the outside of the drive motor 6. The plurality of straight rods 311 are equidistant and distributed in a ring shape with the central axis of the drive motor 6 as the center. The straight rod 311 is fixedly connected to a mounting frame 312 at the center position away from the drive motor 6. The left and right sides of the mounting frame 312 are fixedly connected to a hydraulic cylinder 1 313. The output ends of the two hydraulic cylinders 1 313 are fixedly connected to a connecting rod 314. Rectangular through grooves 315 are provided on the left and right sides of the mounting frame 312. Rails 316 are fixedly connected in the two rectangular through grooves 315, and a sliding block 317 is slidably connected in the rail 316. The connecting rod 314 is fixedly connected to the sliding block 317 at one end away from the hydraulic cylinder 1 313. One end of a spring 318 is fixedly connected to the outside of the hydraulic cylinder 313, and the other end of the spring 318 is fixedly connected to the connecting rod 314. The output end of the hydraulic cylinder 313 of the present application drives the sliding block 317 to move in the track 316 through the connecting rod 314. The spring 318 is used to push the sliding block 317 outward and reset it through the reset ability of the spring 318 when the sliding block 317 pushes the hydraulic cylinder 313. When in use, the hydraulic cylinder 313 will drive the sliding block 317 to the middle position of the track 316. This position can be adjusted. After positioning, the hydraulic cylinder 313 will limit the sliding block 317, thereby ensuring that the hydraulic cylinder 313 cooperates with the spring 318 to push the sliding block 317 outward to the positioning position.

[0055] The vibration reduction assembly 32 includes a U-shaped frame 321, which is fixedly connected to the lower surface of the sliding block 317. A round rod 322 is fixedly connected to the open end of the U-shaped frame 321, and a support rod 323 is hinged on the round rod 322. A telescopic rod 324 is fixedly connected to the center position of the lower surface of the placement frame 312, and the movable end of the telescopic rod 324 is fixedly connected to a square plate 325. The left and right sides of the upper surface of the square plate 325 are fixedly connected to U-shaped frames 326. A round rod 327 is fixedly connected to the open end of the U-shaped frame 326. The support rod 323 is hinged to the round rod 327 at one end away from the round rod 322, and the two support rods 323 are arranged in an eight-shaped shape.

[0056] When the cam 325 is in the state of being rotated, the cam 325 of the second cam 326 is rotated and the cam 326 is rotated.

[0057] The bonding component 33 includes a bonding plate 331, which is fixedly connected to the square plate 325. The bonding plate 331 is fixedly connected to a silicone pad 1 332, and the silicone pad 1 332 is in contact with the drive motor 6. An extension rod 333 is fixedly connected to the square plate 325. The extension rod 333 is fixedly connected to a hydraulic cylinder 2 334 at one end away from the square plate 325. The output end of the hydraulic cylinder 2 334 is fixedly connected to one end of the vertical rod 335, and the other end of the vertical rod 335 is fixedly connected to an arc plate 336. One end of a spring support rod 337 is fixedly connected to the side of the arc plate 336 away from the vertical rod 335, and the other end of the spring support rod 337 is fixedly connected to a bracket 338. The bracket 338 is rotatably connected to a roller 339 through a bearing in a bearing hole. The roller 339 is covered with a silicone pad 2 3310. The roller 339 is in contact with the output port of the drive motor 6 through the silicone pad 2 3310.

[0058] The silicone pad 332 of the present application is in contact with the drive motor 6. Since a plurality of silicone pads 332 are provided, the drive motor 6 can be wrapped in a circle. The silicone pad 332 is used to provide protection for the drive motor 6. The vertical rod 335 on the extension rod 333 is placed vertically. The number of vertical rods 335 is the same as the number of square plates 325. The arc plate 336 connected to the vertical rod 335 is located at the output end of the drive motor 6. Since the output end of the drive motor 6 needs to be connected to the cutter head 2 through the transmission rod, when the drive motor 6 is running, the vibration generated by the body will drive the output end to vibrate. Therefore, it is necessary to While suppressing its own vibration, it is also necessary to suppress the vibration of the output port of the drive motor 6, so as to provide a stabilizing effect of vibration reduction for the cutter disc 2 during operation. At the same time, when the silicone pad 2 3310 on the roller 339 contacts the output end of the drive motor 6, and the drive motor 6 and the cutter disc 2 are connected, the silicone pad 2 3310 does not affect the rotation of the output shaft of the drive motor 6. The spring support rod 337 is used to support the bracket 338, so as to keep the roller 339 in contact with the output end of the drive motor 6. The spring support rod 337 can also suppress vibration through the extension process.

[0059] The annular vibration damping assembly 41 includes an annular plate 1 411, which is fixedly connected to the annular inner wall of the cutter disc 2. An annular plate 2 412 is further provided on the inner side of the annular plate 1 411. The annular plate 1 411 and the annular plate 2 412 are fixedly connected by a connecting frame. The annular plate 1 411 and the annular plate 2 412 are respectively provided with an annular cavity 1 413 and an annular cavity 2 414. The left and right inner walls of the annular cavity 2 414 are fixedly connected with a support frame 415, and an annular drive guide rail 416 is fixedly connected in the support frame 415. A plurality of drive blocks 417 are slidably connected in the annular drive guide rail 416. An annular track 418 is fixedly connected in the annular plate 2 412 and away from the inner wall of the annular plate 1 411. An annular slider 419 is slidably connected to the annular track 418, and the left and right sides of the annular slider 419 are respectively fixedly connected to the corresponding drive blocks 417. A plurality of protrusion blocks 4120 are fixedly connected to the annular slider 419.

[0060] The annular plate 1 411 of the present application is fixedly connected to the inner wall of the cutter disc 2, the annular plate 2 412 is located on the inner side of the cutter disc 2 and is fixedly connected through a connecting frame, the support frame 415 is annular, and is used to place the annular drive guide rail 416 on the support frame 415, the drive block 417 is slidably connected to the annular drive guide rail 416, the annular track 418 is also annular, and the annular track 418 is used as an auxiliary track to enable the annular slider 419 to run smoothly, the annular drive guide rail 416 and the drive block 417 serve as the driving parts of the annular slider 419 to drive it to rotate, and the raised block 4120 on the annular slider 419 enables the ejection elements provided on the circular ring plate 2 412 to be ejected in an orderly manner.

[0061] The annular plate 412 is provided with an annular through hole 1 4121 on one side close to the annular plate 1 411, and the annular frame 412 is fixedly connected to the annular frame 4122. The left and right sides of the annular frame 4122 are fixedly connected to the rectangular plates 4123. The opposite sides of the two rectangular plates 4123 are fixedly connected to the telescopic rod 2 4124. The movable ends of the two telescopic rod 2 4124 are fixedly connected to the mounting plate 4125. An ejection plate 4126 is provided between the two mounting plates 4125 and is fixedly connected to the mounting plate 4125. The outer side of the telescopic rod 2 4124 is sleeved with a spring 2 4133, and one end of the spring 2 4133 is fixedly connected to the telescopic rod 2 4124, and the other end of the spring 2 4133 is fixedly connected to the mounting plate 4125. One end of the ejection plate 4126 contacts the surface of the annular slider 419, and the other end of the ejection plate 4126 is located between the annular plate 1 411 and the annular plate 2 412.

[0062] The second spring 4133 of the present application is fixedly connected to the protruding plate provided on the second telescopic rod 4124, and the other end of the second spring 4133 is fixedly connected to the mounting plate 4125. The second telescopic rod 4124 and the second spring 4133 are used to retract the ejection plate 4126 after extending outward, providing a supporting force for the ejection plate 4126, so that the ejection plate 4126 can always cooperate with the protruding block 4120 on the annular slider 419 to perform the extension and retraction action. There are multiple ejection plates 4126, which are equidistantly arranged in the second annular plate 412.

[0063] An arc-shaped partition 4129 is provided in the annular cavity 413, and the left and right sides of the arc-shaped partition 4129 are in contact with the inner wall of the annular cavity 413. Partitions 4130 are fixedly connected to the front and rear sides of the annular cavity 413 and located in the annular cavity 413. The front and rear sides of the arc-shaped partition 4129 are in contact with the partition 4130. There are multiple partitions 4130, two of which are arranged in a ring shape in the annular cavity 413. An annular through hole 2 4131 is provided on the annular plate 411 and on one side close to the annular plate 2 412. The ejection plate 4126 is located between the annular plate 411 and the annular plate 2 412, and its end face is fixedly connected to the arc-shaped partition 4129.

[0064] In the annular cavity 413 of the present application, a plurality of partitions 4130 are provided, and an arc-shaped partition 4129 is located between two partitions 4130. The number of the arc-shaped partitions 4129 is the same as the number of the ejection plates 4126. When the ejection plates 4126 move outward, they push the arc-shaped partitions 4129. When the ejection plates 4126 are reset, the arc-shaped partitions 4129 are reset accordingly.

[0065] A plurality of metal balls 4132 are disposed within the annular plate 411 and between the two partitions 4130 . The metal balls 4132 are in contact with the partitions 4130 and are located on a side away from the ejection plate 4126 .

[0066] In the present application, a number of metal balls 4132 are arranged between each partition 4130. When the cutter disc 2 vibrates during use, the metal balls 4132 will be driven to vibrate. At this time, there is still a gap between the metal balls 4132 in the annular plate 411. When the ejection plate 4126 is ejected outward and the metal balls 4132 in the partition 4130 are compressed through the arc-shaped partition 4129, the space where the metal balls 4132 exist is gradually reduced, and the movement space of the vibration of the metal balls 4132 is reduced, thereby increasing the collision frequency between the metal balls 4132, thereby consuming the vibration generated by the cutter disc 2, and the metal balls 4132 also increase the weight of the edge of the cutter disc 2. Since the metal balls 4132 arranged between each partition 4130 are of equal weight, a balancing effect is also provided for the cutter disc 2.

[0067] There are four straight rods 311 and four extension rods 333 in the stabilizing mechanism 3, and seven driving blocks 417, protruding blocks 4120, and ejection plates 4126 in the annular vibration damping assembly 41. The annular driving guide rail 416 is an electric driving rail.

[0068] When the active vibration reduction mechanism of the tunnel boring machine of the civil construction is working, when the shield machine is in use, the monitor 5 monitors the vibration source in the equipment, and after detecting the vibration source, transmits instructions to make the active vibration reduction mechanism 4 and the stabilizing mechanism 3 operate, and the cutter head 2 is fixedly connected to the output end of the drive motor 6. When the drive motor 6 is in operation, the bonding plate 331 bonded to it will also vibrate. When the bonding plate 331 vibrates, the bonding plate 331 will be separated from the drive motor 6. When separated, the two sliding blocks 317 will move relative to each other on the track 316. When bonded, As the plywood 331 is separated from the drive motor 6, the vibration generated is gradually weakened, and the spring 1 318 is released after being squeezed, thereby cooperating with the hydraulic cylinder 1 313 to drive the sliding block 317 to reset. When the two sliding blocks 317 move away from each other, the telescopic rod 1 324 is cooperated to drive the plywood 331 to ply with the drive motor 6 again. Since the separation distance between the sliding block 317 and the drive motor 6 is not large, the vibration force generated by the drive motor 6 can be weakened, thereby reducing the vibration generated by the drive motor 6 during operation.

[0069] When the laminating plate 331 is in contact with the driving motor 6, the output end of the hydraulic cylinder 2 334 on the extension rod 333 drives the vertical rod 335 to move downward, thereby making the roller 339 on the arc plate 336 fit the transmission rod on the output end of the driving motor 6. Because there is a certain difference in the vibration frequency and vibration direction generated by the driving motor 6 and the output end of the driving motor 6, a spring support rod 337 is added to the arc plate 336 to provide support for the roller 339 on the bracket 338. Although the extension rod 333 is connected to the laminating plate 331, when the laminating plate 331 and the extension rod 333 are displaced, the hydraulic cylinder 2 334 will extend the output end to prevent the roller 339 from being separated from the driving motor 6. When the output end of the driving motor 6 vibrates, the spring support rod 337 supported by the roller 339 contracts elastically, converting the vibration energy generated by the output end of the driving motor 6 into internal energy, thereby weakening the vibration force at the output end of the driving motor 6.

[0070] The cutter disc 2 is driven to rotate by the driving motor 6, and the driving block 417 on the annular driving guide rail 416 in the annular cavity 2 414 in the annular plate 2 412 performs a circular motion, and the annular slider 419 follows the driving block 417 to perform a circular motion. When the annular slider 419 is running, the protruding block 4120 on the annular slider 419 will contact the ejection plate 4126 and eject the ejection plate 4126 outward. The arc-shaped partition plate 4129 connected to the ejection plate 4126 moves and squeezes the space where the metal ball 4132 is located, so that more metal balls 4132 can come into contact and produce multiple collisions, thereby consuming the vibration generated by the cutter disc 2, thereby weakening the vibration generated by the cutter disc 2.

[0071] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0072] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An active vibration reduction mechanism for a tunnel boring machine used in civil engineering construction, comprising a shield machine body and a cutterhead, characterized in that: A drive motor is fixedly connected to the left side of the shield machine body, a stabilizing mechanism is provided on the shield machine body and outside the drive motor, an output end of the drive motor is fixedly connected to the cutterhead, an active vibration reduction mechanism is provided on the cutterhead, and a monitor is also provided on the shield machine body; The stabilizing mechanism comprises: A plurality of straight rods, the straight rods being fixedly connected to the left side of the shield machine body and located outside the drive motor, the straight rods being equidistant and distributed in a ring shape around the central axis of the drive motor, and a mounting frame being fixedly connected to the center position of the straight rod away from the drive motor; A moving assembly, the moving assembly comprising two hydraulic cylinders 1, the hydraulic cylinders 1 being fixedly connected to the left and right sides of the mounting frame respectively, the output ends of the two hydraulic cylinders 1 being fixedly connected to a connecting rod, rectangular through-slots being provided on the left and right sides of the mounting frame, rails being fixedly connected in the two rectangular through-slots, and sliding blocks being slidably connected in the rails, one end of the connecting rod away from the hydraulic cylinder 1 being fixedly connected to the sliding block, one end of a spring 1 being fixedly connected to the mounting frame and located outside the hydraulic cylinder 1, and the other end of the spring 1 being fixedly connected to the connecting rod; The vibration reduction assembly includes a U-shaped frame, the U-shaped frame is fixedly connected to the lower surface of the sliding block, the open end of the U-shaped frame is fixedly connected to a round rod, and the round rod is hinged to a support rod, the center position of the lower surface of the placement frame is fixedly connected to a telescopic rod, and the movable end of the telescopic rod is fixedly connected to a square plate, the left and right sides of the upper surface of the square plate are fixedly connected to a U-shaped frame 2, the open end of the U-shaped frame 2 is fixedly connected to a round rod 2, and the support rod is hinged to the round rod 2 at one end away from the round rod 1, and the two support rods are arranged in an eight-shaped shape; A laminating assembly, the laminating assembly comprising a laminating plate, the laminating plate being fixedly connected to the square plate, the laminating plate being fixedly connected to a first silicone pad, the first silicone pad being in contact with the driving motor; The active vibration reduction mechanism comprises: Annular plate 1, said annular plate 1 being fixedly connected to the annular inner wall of the cutter disc, annular plate 2 being further provided on the inner side of said annular plate 1, said annular plate 1 and annular plate 2 being fixedly connected via a connecting frame, said annular plate 1 and annular plate 2 respectively defining annular cavity 1 and annular cavity 2, and support frames being fixedly connected to the inner walls on both sides of said annular cavity 2; An annular vibration damping assembly is used to reduce vibration of the cutter disc.

2. The active vibration reduction mechanism for a tunnel boring machine for civil engineering construction according to claim 1, characterized in that: The fitting component also includes an extension rod, which is fixedly connected to the square plate, and the end of the extension rod away from the square plate is fixedly connected to hydraulic cylinder 2, the output end of the hydraulic cylinder 2 is fixedly connected to one end of the vertical rod, and the other end of the vertical rod is fixedly connected to the arc plate, and one end of the spring support rod is fixedly connected to the side of the arc plate away from the vertical rod, and the other end of the spring support rod is fixedly connected to the bracket, and the bracket is rotatably connected to a roller through a bearing hole provided in the bearing hole, and the roller is covered with silicone pad 2, and the roller is in contact with the output port of the drive motor through the silicone pad 2.

3. The active vibration reduction mechanism for a tunnel boring machine for civil engineering construction according to claim 2, characterized in that: The annular vibration damping assembly includes an annular drive guide rail, which is fixedly connected to the support frame. Several drive blocks are slidably connected to the annular drive guide rail. An annular track is fixedly connected to the inner wall of the annular plate 2 and away from the annular plate 1. An annular slider is slidably connected to the annular track, and the left and right sides of the annular slider are respectively fixedly connected to the corresponding drive blocks. Several protrusion blocks are fixedly connected to the annular slider.

4. The active vibration reduction mechanism for a tunnel boring machine for civil engineering construction according to claim 3, characterized in that: The annular plate 2 is provided with an annular through hole 1 on one side close to the annular plate 1, the annular plate 2 is fixedly connected to an annular frame, the left and right sides of the annular frame are fixedly connected to rectangular plates, the opposite sides of the two rectangular plates are fixedly connected to telescopic rods 2, the movable ends of the two telescopic rods 2 are fixedly connected to the mounting plate, an ejector plate is provided between the two mounting plates, and the ejector plate is fixedly connected to the mounting plate, the outer side of the telescopic rod 2 is sleeved with a spring 2, and one end of the spring 2 is fixedly connected to the telescopic rod 2, and the other end of the spring 2 is fixedly connected to the mounting plate, one end of the ejector plate is in contact with the surface of the annular slider, and the other end of the ejector plate is located between the annular plate 1 and the annular plate 2.

5. The active vibration reduction mechanism for a tunnel boring machine for civil engineering construction according to claim 4, characterized in that: An arc-shaped partition is provided in the annular cavity one, and the left and right sides of the arc-shaped partition are in contact with the inner wall of the annular cavity one. Partitions are fixedly connected in the annular cavity one and on the front and rear sides of the arc-shaped partition, and the front and rear sides of the arc-shaped partition are in contact with the partition. There are multiple partitions, two in a group, which are arranged in an annular shape in the annular cavity one. An annular through hole two is provided on the annular plate one and on one side close to the annular plate two. The ejection plate is located between the annular plate one and the annular plate two, and the end face is fixedly connected to the arc-shaped partition.

6. The active vibration reduction mechanism for a tunnel boring machine for civil engineering construction according to claim 5, characterized in that: A plurality of metal balls are arranged inside the annular plate and between the two partitions. The metal balls are in contact with the partitions and are located on a side away from the ejection plate.

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