Shield cutter cylinder turnover machine based on lever dynamic balance adjustment and turnover process

Abstract

The invention discloses a shield cutter cylinder turnover machine based on lever dynamic balance adjustment and a turnover process, the turnover machine comprises a turnover seat, a turnover frame, a clamping component and a power cylinder, a pivot is a rotating fulcrum, the turnover frame is a lever with a power end and a resistance end, and the telescopic end of the power cylinder is in butt joint with the power end of the lever. On one hand, on the basis of the lever dynamic balance principle, along with the change of the acting force of the power end of the lever, the resistance end forms correspondingly-changed power assistance and power cooperation, so that the lever keeps overturning in dynamic balance, labor is saved, the probability of overturning or out-of-control is low, and therefore the potential safety hazard rate of overturning of the cutter cylinder is reduced; and on the other hand, based on the horizontal or vertical state of the lever, the two ends of the corresponding power cylinder and the rotating fulcrum are distributed in a triangular shape to limit the lever at the current position in dynamic balance, so that the requirement for assembling or machining at the needed angle is met, and in addition, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of flipping operations, and particularly relates to a shield cutter barrel flipper based on lever dynamic balance adjustment. At the same time, the present invention also relates to a shield cutter barrel flipping process based on lever dynamic balance adjustment. Background Art

[0002] At present, hob cutters are installed inside the cutter barrel of a shield machine. Since the sizes of the cutter barrels are different and the weight is generally about one ton, when the cutter barrel needs to disassemble and assemble the cutters or other components, a crane is required to lift the cutter barrel and install it on a flipping platform. Then, the flipping platform is flipped by means of gear transmission to realize the switching between the horizontal and vertical states of the cutter barrel to meet the requirements of cutter barrel assembly or other processing needs.

[0003] However, in the above flipping process, the following technical defects exist: 1) Based on the weight of the cutter barrel, if full power is used to drive its flipping, the required power is not only high, but also the probability of the cutter barrel tipping over or getting out of control during flipping is relatively high. That is, it is not only laborious and costly, but also has a relatively large safety hazard; 2) No matter what state the flipping platform is in, the gears are in a meshing and stressed state, resulting in a relatively low service life of the gear components. At the same time, the formed flipping positioning angles are completely based on the parameters of the gears. That is, it is impossible to accurately stop at the required horizontal and vertical positions, so there will be errors in the disassembly and assembly of the cutter barrel, bringing serious inconvenience to actual operation. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a brand-new shield cutter barrel flipper based on lever dynamic balance adjustment.

[0005] At the same time, the present invention also relates to a shield cutter barrel flipping process based on lever dynamic balance adjustment.

[0006] To achieve the above purpose, the solution adopted by the present invention is: A shield cutter head turnover machine based on lever dynamic balance adjustment, which comprises a turnover base, a turnover frame rotatably installed on the turnover base through a horizontally extending pivot, a clamping component installed on the turnover frame and capable of forming a bearing and clamping the shield cutter head in different directions, and a power cylinder arranged between the turnover base and the turnover frame. The pivot is a rotation fulcrum, the turnover frame is a lever with a power end and a resistance end, the telescopic end of the power cylinder is butted against the power end of the lever, and the clamping component includes a first clamping part fitting the outer periphery of the shield cutter head and a second clamping part arranged at the resistance end of the lever and clamping the outer periphery of the shield cutter head. The first clamping part forms a first resistance to support and prevent the shield cutter head from slipping relative to itself; the second clamping part clamps and fits the outer side of the shield cutter head to form a second resistance to prevent the shield cutter head from slipping relative to itself, and the second clamping part changes the direction of the second resistance with the turnover of the lever to form a motion cooperation, so that the lever turns in dynamic balance. When the lever is in a horizontal or vertical state, the two ends of the power cylinder and the rotation fulcrum are distributed in a triangle to limit the lever in the dynamic balance at the current position.

[0007] Preferably, the power cylinder has an extreme extension state and an extreme contraction state. When the lever is in a horizontal state, the power cylinder is in the extreme extension state; when the lever is in a vertical state, the power cylinder is in the extreme contraction state. Based on the design of the extreme positions, the lever can be more accurately positioned in the horizontal or vertical state, and then the synchronous turnover of the shield cutter head or positioning at the current turnover position or positioning in the horizontal or vertical state can be synchronously controlled.

[0008] According to a specific implementation and preferred aspect of the present invention, the first clamping part includes a first seat body fixed on the lever, an arc-shaped supporting plate fixed on the top of the first seat body, and magnetic adsorption components arranged on the arc-shaped supporting plate. The shield cutter head is magnetically adsorbed and attached to the arc-shaped supporting plate from the circumferential side. Based on the arc-shaped supporting plate, the lever and the shield cutter head are kept parallel and attached, and at the same time, the adhesion force of the shield cutter head is increased based on the magnetic adsorption method, and then resistance can also be formed during the turnover process. Cooperating with the decomposition in the horizontal and vertical directions, the cutter head is in a dynamic balance state at any position, so as to facilitate the safe operation of turnover.

[0009] Preferably, in the axial projection of the shield cutter head, the arc length formed by the arc-shaped supporting plate is at least 1 / 4 of the outer diameter of the cylinder body; the larger the formed contact area, the higher the clamping stability. The magnetic adsorption components are disassembled and assembled at the end of the arc-shaped supporting plate and are evenly spaced along the arc length. The probability of the shield cutter head being misaligned or displaced from the arc-shaped supporting plate is reduced.

[0010] According to another specific implementation and preferred aspect of the present invention, the second clamping portion is clamped on the outside of the shield cutter barrel and the resistance position changes with the flipping of the lever, and the magnitude and direction of the second resistance are changed in the change of the resistance position, wherein the changed direction force is an auxiliary force consistent with the direction of movement of the lever. In short, the second resistance is variable and adapted to the flipping angle of the lever, so that under the premise of meeting the clamping positioning, the power output of the power cylinder is reduced based on the auxiliary force, thereby performing the flipping operation more labor-saving.

[0011] Preferably, when the resistance end of the lever is upward, the second clamping part is clamped on the outer side of the shield cutter cylinder from the contacting lower part, and forms an upward supporting auxiliary force; when the resistance end of the lever is downward, the second clamping part is clamped on the outer side of the shield cutter cylinder from the contacting upper part, and forms a downward pressing auxiliary force. Based on the different movement directions of the resistance end, the auxiliary force in the same direction is provided, which is more convenient for the flipping operation.

[0012] In some specific embodiments, when the lever is in a horizontal or vertical state, the second clamping part acts on the end of the shield cutter barrel from both the upper and lower parts, and the clamping force is a centripetal clamping force. Therefore, in the horizontal or vertical state, the lever does not need auxiliary force, and the clamping force is a centripetal clamping force, which not only forms a stable clamping, but also forms the best support and best clamping based on the state of the shield cutter barrel (when the lever is in a horizontal state, the first clamping part and the second clamping part cooperate to support the shield cutter barrel; when the lever is in a vertical state, the first clamping part and the second clamping part cooperate to prevent the shield cutter barrel from moving downward).

[0013] According to another specific implementation and preferred aspect of the present invention, the second clamping part includes a positioning arm fixed on the end of the lever away from the power cylinder connection and extending along the length direction of the pivot, a left clamping arm and a right clamping arm respectively connected to the left and right ends of the positioning arm by rotation and sliding, a left clamping ear and a right clamping ear respectively arranged at the clamping ends of the left clamping arm and the right clamping arm, and a telescopic cylinder arranged between the power ends of the left clamping arm and the right clamping arm, wherein a sliding groove is respectively arranged on the left clamping arm and the right clamping arm, the left and right ends of the positioning arm are slidably connected to the sliding groove, and the left and right ends of the positioning arm are located between the corresponding side clamping end and the power end, wherein the telescopic cylinder relatively opens the left clamping arm and the right clamping arm and forms a clamping along the shield cutter barrel through the left clamping ear and the right clamping ear, and based on the adaptive change of the clamping force, the lever is in dynamic balance at any flipping angle. Based on the synchronous movement of the telescopic cylinder and the power cylinder, the second resistance is dynamically changed to meet the flipping requirements of dynamic balance.

[0014] Preferably, kidney-shaped holes that slope inward from top to bottom are respectively provided on the left clamping arm and the right clamping arm. The power cylinder drives the lever to rotate around the rotation fulcrum and is pressed down by the positioning arm to drive the power ends of the left clamping arm and the right clamping arm away from each other, thereby adjusting the clamping force formed by the left clamping ear and the right clamping ear. Under the guidance of the kidney-shaped holes, the movement of the left clamping arm and the right clamping arm is more stable, and on the premise of always maintaining the clamping force, the direction of the force is changed by changing the contact position, so that the lever is in dynamic balance (dynamic balance is a basic concept in physics, which means that an object is in a state of continuous movement or change, but due to the balance of various forces, the entire system remains in a static state).

[0015] In some specific embodiments, both the left clamping arm and the right clamping arm have two pieces. The two left clamping arms are fixed at both ends through the left mounting shafts respectively. The left mounting shafts are the upper left shaft and the lower left shaft located at the clamping end and the power end. The upper left shaft is pivotally connected to the left clamping ear, and the lower left shaft is pivotally connected to the left end of the telescopic cylinder; the two right clamping arms are fixed at both ends through the right mounting shafts respectively. The right mounting shafts are the upper right shaft and the lower right shaft located at the clamping end and the power end. The upper right shaft is pivotally connected to the right clamping ear, and the lower right shaft is pivotally connected to the right end of the telescopic cylinder. This facilitates the assembly of each component, increases the rigidity in the combination of the two pieces, and also facilitates the installation of components such as the positioning arm and the telescopic cylinder.

[0016] Preferably, an aligned left kidney-shaped hole group is formed on the two left clamping arms, and an aligned right kidney-shaped hole group is formed on the two right clamping arms. The left and right ends of the positioning arm respectively form a left positioning shaft and a right positioning shaft that penetrate both sides of the positioning arm. The left positioning shaft and the right positioning shaft are respectively slidably installed in the left kidney-shaped hole group and the right kidney-shaped hole group. Based on the design of the kidney-shaped holes, the two clamping arms are kept moving synchronously.

[0017] According to another specific implementation and preferred aspect of the present invention, the left clamping arm and the right clamping arm symmetrically clamp the two sides of the end of the shield cutter barrel with respect to the center of the shield cutter barrel. The left clamping ear includes a left arc-shaped piece that fits the left side surface of the shield cutter barrel and a left connecting ear fixed on the left side of the left arc-shaped piece. The left clamping arm is pivotally connected to the left connecting ear from the clamping end, and the clamping end abuts against the left arc-shaped piece; the right clamping ear includes a right arc-shaped piece that fits the right side surface of the shield cutter barrel and a right connecting ear fixed on the right side of the right arc-shaped piece. The right clamping arm is pivotally connected to the right connecting ear from the clamping end, and the clamping end abuts against the right arc-shaped piece. When the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece, a centripetal clamping force is formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from above, a centripetal clamping force and a downward auxiliary force are formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from below, a centripetal clamping force and an upward auxiliary force are formed. In short, the direction of the clamping force is changed based on the change of different contact positions during clamping.

[0018] Preferably, the telescopic direction of the telescopic cylinder is parallel to the extending direction of the pivot shaft to avoid generating torque and causing deflection of the lever. Further, both the telescopic cylinder and the power cylinder are oil cylinders, and the two oil cylinders supply or discharge oil synchronously. That is, when the power cylinder extends, the telescopic cylinder is also in the extended state, and at this time, a downward auxiliary force is formed; when the power cylinder contracts, the telescopic cylinder is also in the contracted state, and at this time, an upward supporting auxiliary force is formed.

[0019] In some specific embodiments, when the lever is in a horizontal state, the power cylinder is obliquely supported between the front end of the lever and the rear end of the flipping seat. The power cylinder has a rear connection end and a front connection end, and the rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged from top to bottom in sequence; When the lever is in a vertical state, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the flipping seat. The power cylinder has a rear connection end and a front connection end, and the rear connection end, the front connection end, and the rotation fulcrum are arranged from left to right in sequence, and the rear connection end, the front connection end, and the rotation fulcrum are arranged from bottom to top in sequence.

[0020] Another technical solution of the present invention is: a shield cutter head flipping process based on dynamic balance adjustment of a lever, which includes the following steps: S1. Shield cutter head installation Adjust the lever to a horizontal state, then align the center of the shield cutter head with the rotation fulcrum, and the shield cutter head is horizontally clamped on the clamping component, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the flipping seat. The lever is in a dynamic balance state, the power cylinder has a rear connection end and a front connection end, the rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged from top to bottom in sequence; S2. Shield cutter head flipping Based on the power provided by the power cylinder to contract downward and leftward, the lever rotates and flips to the right around the rotation fulcrum, and the clamping component forms a clamping resistance and an upward supporting auxiliary force, and at the same time, the lever remains in a dynamic balance state and flips with the contraction of the power cylinder until the direction of the upward supporting auxiliary force changes to the centripetal clamping force, and the lever is in a vertical dynamic balance state. The power cylinder is obliquely supported between the lower end of the lever and the rear end of the flipping seat. The power cylinder has a rear connection end and a front connection end, the rear connection end, the front connection end, and the rotation fulcrum are arranged from left to right in sequence, and the rear connection end, the front connection end, and the rotation fulcrum are arranged from bottom to top in sequence; At the same time, when the lever rotates back to the horizontal state around the rotation fulcrum, based on the power provided by the power cylinder to extend upward and rightward, the lever rotates and flips to the left around the rotation fulcrum, and the clamping component forms a clamping resistance and a downward auxiliary force, and at the same time, the lever remains in a dynamic balance state and flips with the extension of the power cylinder until the direction of the downward auxiliary force changes to the centripetal clamping force, and the lever is in a horizontal dynamic balance state.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: During the flipping process of the existing shield cutter barrel, based on the weight of the cutter barrel, if full power is used to drive its flipping, not only is the required power high, but there is also a relatively high probability of the cutter barrel tipping over or getting out of control during flipping. That is, it is not only laborious and costly, but also has a relatively high safety hazard. At the same time, regardless of the state of the flipping platform, the gears are always in a meshing and stressed state, resulting in a relatively low service life of the gear components. At the same time, the formed flipping and positioning angles are completely based on the parameters of the gears. That is, it cannot accurately stay at the required horizontal and vertical positions, so there will be errors in the disassembly and assembly of the cutter barrel, causing serious inconvenience to actual operation and other deficiencies. However, the present invention conducts an overall design on the structure of the shield cutter barrel flipper based on the dynamic balance adjustment of the lever, and cleverly solves various existing deficiencies. After adopting the shield cutter barrel flipper based on the dynamic balance adjustment of the lever, first, the lever is adjusted to the horizontal state, then the center of the shield cutter barrel is aligned with the rotation fulcrum, and the shield cutter barrel is horizontally clamped on the clamping component. The power cylinder is obliquely supported between the front end of the lever and the rear end of the flipping seat. Among them, in the dynamic balance state of the lever, the power cylinder has a rear connection end and a front connection end, and the rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged from top to bottom in sequence. Then, based on the power provided by the power cylinder to contract downward and to the left, the lever rotates around the rotation fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward auxiliary force. At the same time, the lever remains in a dynamic balance state and flips with the contraction of the power cylinder until the direction of the upward auxiliary force changes to the centripetal clamping force, and the lever is in a vertical dynamic balance state. Among them, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the flipping seat. The power cylinder has a rear connection end and a front connection end, and the rear connection end, the front connection end, and the rotation fulcrum are arranged from left to right in sequence, and the rear connection end, the front connection end, and the rotation fulcrum are arranged from bottom to top in sequence. At the same time, when the lever rotates around the rotation fulcrum and resets to the horizontal state, based on the power provided by the power cylinder to extend upward and to the right, the lever rotates around the rotation fulcrum and flips to the left, and the clamping component forms a clamping resistance and a downward auxiliary force. At the same time, the lever remains in a dynamic balance state and flips with the extension of the power cylinder until the direction of the downward auxiliary force changes to the centripetal clamping force, and the lever is in a horizontal dynamic balance state. Therefore, on the one hand, based on the principle of lever dynamic balance, as the force at the power end of the lever changes, the resistance end forms corresponding power assistance and power cooperation, so that the lever remains in dynamic balance during flipping. That is, it is very labor-saving and has a relatively low probability of tipping over or getting out of control, thereby reducing the safety hazard rate of cutter barrel flipping. On the other hand, based on the horizontal or vertical state of the lever, the two ends of the corresponding power cylinder and the rotation fulcrum are distributed in a triangle to limit the lever in a dynamic balance at the current position, so as to meet the requirements for assembly or processing at the required angle. In addition, the structure is simple and easy to operate. Description of the Drawings

[0022] Figure 1 Front view schematic diagram (vertical state) of the shield cutter barrel turnover machine based on lever dynamic balance adjustment of the present invention; Figure 2 is Figure 1 top view schematic diagram; Figure 3 Front view schematic diagram (horizontal state) of the shield cutter barrel turnover machine based on lever dynamic balance adjustment of the present invention; Figure 4 is Figure 3 left view schematic diagram; Wherein: 1. turnover seat; 2. turnover frame; 3. clamping component; 31. first clamping part; 310. first seat body; 311. arc-shaped supporting plate; 312. magnetic attachment; 32. second clamping part; 320. positioning arm; 321. left clamping arm; 322. right clamping arm; 323. left clamping ear; p1. left arc-shaped piece; p2. left connecting ear; 324. right clamping ear; q1. right arc-shaped piece; q2. right connecting ear; 325. telescopic cylinder; h. sliding groove; a. left mounting shaft; a1. upper left shaft; a2. lower left shaft; b. right mounting shaft; b1. upper right shaft; b2. lower right shaft; c1. left kidney-shaped hole group; c2. right kidney-shaped hole group; d1. left positioning shaft; d2. right positioning shaft; 4. power cylinder; 4a. rear connection end; 4b. front connection end; T. shield cutter barrel; s. pivot shaft. Detailed implementation manners

[0023] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In this application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0028] As Figures 1 to 4 shown, the shield cutter barrel tilting machine based on the dynamic balance adjustment of the lever of this embodiment includes a tilting base 1, a tilting frame 2 pivotally mounted on the tilting base 1 through a horizontally extending pivot s, a clamping component 3 mounted on the tilting frame 2 and capable of carrying and clamping the shield cutter barrel in different directions, and a power cylinder 4 disposed between the tilting base 1 and the tilting frame 2, where the pivot s is the rotation fulcrum. The tilting frame 2 has a lever with a power end and a resistance end ( Figure 1 the front end in the middle is the power end and the rear end is the resistance end), and the telescopic end of the power cylinder 4 is docked with the power end of the lever.

[0029] In some specific embodiments, the clamping component 3 includes a first clamping portion 31 that fits the outer periphery of the shield cutter cylinder T, and a second clamping portion 32 that is arranged at the resistance end of the lever and clamped on the outer periphery of the shield cutter cylinder T, wherein the first clamping portion 31 forms a first resistance that supports and hinders the shield cutter cylinder T from sliding relative to itself; the second clamping portion 32 clamps and fits the outer side of the shield cutter cylinder T to form a second resistance that hinders the shield cutter cylinder from sliding relative to itself, and the second clamping portion 32 changes the direction of the second resistance as the lever flips to form a motion cooperation, so that the lever flips in dynamic balance, the lever is in a horizontal or vertical state, and the two ends of the power cylinder 4 and the rotation fulcrum are distributed in a triangle to limit the lever to the current position in dynamic balance.

[0030] In this example, the first clamping part 31 includes a first seat body 310 fixed on the lever, an arc-shaped support plate 311 fixed on the top of the first seat body 310, and a magnetic adsorption part 312 arranged on the arc-shaped support plate 311, wherein the shield knife barrel T is magnetically adsorbed and adhered to the arc-shaped support plate 311 from the circumferential side. Based on the arc-shaped support plate 311, the lever and the shield knife barrel T are kept parallel to each other, and the adhesion of the shield knife barrel T is increased by magnetic adsorption, so that resistance can be formed during the flipping process. With the decomposition in the horizontal and vertical directions, the knife barrel is in a dynamic equilibrium state when it is in any position, so as to facilitate the safe flipping operation. In the axial projection of the shield knife barrel T, the arc length formed by the arc-shaped support plate 311 is 1 / 4 of the outer diameter of the barrel; the larger the contact area formed, the better the stability of the clamping. The magnetic adsorption part 312 is disassembled and assembled at the end of the arc-shaped support plate 311, and is evenly spaced along the arc length. Reduce the probability of misalignment or displacement between the shield cutter barrel and the curved support plate.

[0031] The second clamping part 32 clamps on the outer side of the shield cutter barrel T, and the formed contact position changes with the flipping of the lever. During the change of the contact position, the magnitude and direction of the second resistance are changed, and the changed directional force is an auxiliary force consistent with the movement direction of the lever. In short, the formation of the second resistance is variable and adapted to the flipping angle of the lever. Thus, on the premise of meeting the clamping and positioning requirements, the power output of the power cylinder is reduced based on the auxiliary force, and then the flipping operation is more labor-saving. When the resistance end of the lever is upward, the second clamping part 32 clamps on the outer side of the shield cutter barrel T from the lower part of the contact and forms an upward supporting auxiliary force; when the resistance end of the lever is downward, the second clamping part 32 clamps on the outer side of the shield cutter barrel T from the upper part of the contact and forms a downward pressing auxiliary force. Based on the different movement directions of the resistance end, the same-direction auxiliary force is provided, which is more convenient for the flipping operation. When the lever is in the horizontal or vertical state, the second clamping part 32 acts on the end of the shield cutter barrel from both the upper and lower parts simultaneously, and the clamping force is a centripetal clamping force. Therefore, in the horizontal or vertical state, the lever does not require an auxiliary force, and at this time, the clamping force is a centripetal clamping force, which not only forms stable clamping but also provides the best support and the best clamping based on the state of the shield cutter barrel (when the lever is in the horizontal state, the first clamping part 31 and the second clamping part 32 cooperate to jointly support the shield cutter barrel T; when the lever is in the vertical state, the first clamping part 31 and the second clamping part 32 cooperate to jointly prevent the shield cutter barrel T from moving downward).

[0032] In this example, the second clamping part 32 includes a positioning arm 320 fixed to the end of the lever far from the connection end of the power cylinder 4 and extending along the length direction of the pivot s, a left clamping arm 321 and a right clamping arm 322 respectively rotatably and slidably connected to the left and right ends of the positioning arm 320, left clamping ears 323 and right clamping ears 324 respectively arranged at the clamping ends of the left clamping arm 321 and the right clamping arm 322, and a telescopic cylinder 325 arranged between the power ends of the left clamping arm 321 and the right clamping arm 322. Sliding grooves h are respectively arranged on the left clamping arm 321 and the right clamping arm 322, and the left and right ends of the positioning arm 320 are slidably connected to the sliding grooves h, and the left and right ends of the positioning arm 320 are located between the corresponding side clamping ends and power ends. The telescopic cylinder 325 relatively pushes the left clamping arm 321 and the right clamping arm 322 apart and forms clamping along the shield cutter barrel T through the left clamping ears 323 and the right clamping ears 324, and based on the adaptive change of the clamping force, the lever is in dynamic balance at any flipping angle. Based on the synchronous movement of the telescopic cylinder and the power cylinder, the second resistance changes dynamically to meet the flipping requirements of dynamic balance.

[0033] Further, the sliding slots h are kidney-shaped holes provided on the left clamping arm 321 and the right clamping arm 322, and are inclined inward from top to bottom respectively. The power cylinder 4 drives the lever to rotate around the rotation fulcrum and is pressed down by the positioning arm 320 to drive the power ends of the left clamping arm 321 and the right clamping arm 322 to move away from each other, thereby adjusting the clamping force formed by the left clamping ear 323 and the right clamping ear 324. Under the guidance of the kidney-shaped holes, the left clamping arm 321 and the right clamping arm 322 move more stably. And on the premise of always maintaining the clamping force, the direction of the force is changed by changing the contact position, so that the lever is in dynamic balance (dynamic balance is a basic concept in physics, which means that an object is in a state of continuous movement or change, but due to the balance of various forces, the entire system remains in a static state). In this example, both the left clamping arm 321 and the right clamping arm 322 have two pieces. The two left clamping arms 321 are fixed at both ends through the left mounting shafts a. The left mounting shafts a are the upper left shaft a1 and the lower left shaft a2 located at the clamping end and the power end. The upper left shaft a1 is pivotally connected to the left clamping ear 323, and the lower left shaft a2 is pivotally connected to the left end of the telescopic cylinder 325. The two right clamping arms 322 are fixed at both ends through the right mounting shafts b. The right mounting shafts b are the upper right shaft b1 and the lower right shaft b2 located at the clamping end and the power end. The upper right shaft b2 is pivotally connected to the right clamping ear 324, and the lower right shaft b2 is pivotally connected to the right end of the telescopic cylinder 325. This facilitates the assembly of each component, increases the rigidity in the combination of the two pieces, and also facilitates the installation of components such as the positioning arm and the telescopic cylinder. Aligned left kidney-shaped hole groups c1 are formed on the two left clamping arms 321, and aligned right kidney-shaped hole groups c2 are formed on the two right clamping arms 322. The left and right ends of the positioning arm 320 are respectively formed with a left positioning shaft d1 and a right positioning shaft d2 that penetrate both sides of the positioning arm. The left positioning shaft d1 and the right positioning shaft d2 are respectively slidably installed in the left kidney-shaped hole group c1 and the right kidney-shaped hole group c2. Based on the design of the kidney-shaped holes, the two clamping arms are kept moving synchronously.

[0034] In some specific embodiments, the left clamping arm 321 and the right clamping arm 322 symmetrically clamp on both sides of the end of the shield cutter barrel T with respect to the center of the shield cutter barrel T. The left clamping ear 323 includes a left arc piece p1 that fits against the left side surface of the shield cutter barrel T and a left connecting ear p2 fixed on the left side of the left arc piece p1. The left clamping arm 321 is pivotally connected to the left connecting ear p2 from the clamping end, and the clamping end abuts against the left arc piece p1. The right clamping ear 324 includes a right arc piece q1 that fits against the right side surface of the shield cutter barrel T and a right connecting ear q2 fixed on the right side of the right arc piece q1. The right clamping arm 322 is pivotally connected to the right connecting ear q2 from the clamping end, and the clamping end abuts against the right arc piece q1. When the clamping ends abut against the left arc piece p1 and the right arc piece q1, a centripetal clamping force is formed. When the clamping ends abut against the left arc piece p1 and the right arc piece q1 from above, a centripetal clamping force and a downward auxiliary force are formed. When the clamping ends abut against the left arc piece p1 and the right arc piece q1 from below, a centripetal clamping force and an upward jacking auxiliary force are formed. In short, the direction of the clamping force is changed based on the change of different abutting positions during clamping.

[0035] In addition, the telescopic direction of the telescopic cylinder 325 is parallel to the extending direction of the pivot s to avoid generating torque and causing the lever to deflect. Further, both the telescopic cylinder 325 and the power cylinder 4 are oil cylinders, and the two oil cylinders supply or discharge oil synchronously. That is, when the power cylinder 4 extends, the telescopic cylinder 325 is also in the extended state. At this time, a downward auxiliary force is formed. When the power cylinder 4 contracts, the telescopic cylinder 325 is also in the contracted state. At this time, an upward supporting auxiliary force is formed.

[0036] In some specific embodiments, the power cylinder 4 has a limit extended state and a limit contracted state. When the lever is in the horizontal state, the power cylinder 4 is in the limit extended state. When the lever is in the vertical state, the power cylinder 4 is in the limit contracted state. Based on the design of the limit positions, the lever can be more accurately positioned in the horizontal or vertical state, and then the synchronous flipping of the shield cutter barrel T or positioning at the current flipping position or positioning in the horizontal or vertical state can be controlled synchronously. At the same time, when the lever is in the horizontal state, the power cylinder 4 is obliquely supported between the front end of the lever and the rear end of the flipping seat 1. The power cylinder 4 has a rear connection end 4a and a front connection end 4b. The rotation fulcrum (pivot s) is located between the rear connection end 4a and the front connection end 4b, and the rotation fulcrum, the front connection end 4b, and the rear connection end 4a are arranged from top to bottom in sequence. When the lever is in the vertical state, the power cylinder 4 is obliquely supported between the lower end of the lever and the left end of the flipping seat 1. The power cylinder 4 has a rear connection end 4a and a front connection end 4b. The rear connection end 4a, the front connection end 4b, and the rotation fulcrum are arranged from left to right in sequence, and the rear connection end 4a, the front connection end 4b, and the rotation fulcrum are arranged from bottom to top in sequence.

[0037] In summary, the shield cutter barrel flipping process based on the dynamic balance adjustment of the lever includes the following steps: S1. Installation of the shield cutter barrel Adjust the lever to the horizontal state, then align the center of the shield cutter barrel with the rotation fulcrum, and the shield cutter barrel is horizontally clamped on the clamping component. The power cylinder is obliquely supported between the front end of the lever and the rear end of the turning seat. Among them, the lever is in a dynamic balance state. The power cylinder has a rear connection end and a front connection end. The rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged in sequence from top to bottom; S2. Shield cutter barrel flipping Based on the power provided by the power cylinder to contract downward and leftward, the lever rotates around the rotation fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward auxiliary force. At the same time, the lever remains in a dynamic balance state and flips with the contraction of the power cylinder until the direction of the upward auxiliary force changes to the centripetal clamping force, and the lever is in a vertical dynamic balance state. Among them, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the turning seat. The power cylinder has a rear connection end and a front connection end. The rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from bottom to top; At the same time, when the lever rotates around the rotation fulcrum and resets to the horizontal state, based on the power provided by the power cylinder to extend upward and rightward, the lever rotates around the rotation fulcrum and flips to the left, and the clamping component forms a clamping resistance and a downward auxiliary force. At the same time, the lever remains in a dynamic balance state and flips with the extension of the power cylinder until the direction of the downward auxiliary force changes to the centripetal clamping force, and the lever is in a horizontal dynamic balance state.

[0038] Therefore, after adopting the shield cutter barrel turnover machine based on the dynamic balance adjustment of the lever, first, the lever is adjusted to the horizontal state, and then the center of the shield cutter barrel is aligned with the rotation fulcrum. The shield cutter barrel is horizontally clamped on the clamping component, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the turnover seat. In the dynamic balance state of the lever, the power cylinder has a rear connection end and a front connection end, and the rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged in sequence from top to bottom; then, based on the power provided by the power cylinder to contract downward and leftward, the lever rotates around the rotation fulcrum and turns rightward, and the clamping component forms a clamping resistance and an upward auxiliary force. At the same time, the lever remains in the dynamic balance state and turns with the contraction of the power cylinder until the direction of the upward auxiliary force changes to the centripetal clamping force, and the lever is in the vertical dynamic balance state. At this time, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the turnover seat. The power cylinder has a rear connection end and a front connection end, and the rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from left to right and from bottom to top; at the same time, when the lever rotates around the rotation fulcrum and resets to the horizontal state, based on the power provided by the power cylinder to extend upward and rightward, the lever rotates around the rotation fulcrum and turns leftward, and the clamping component forms a clamping resistance and a downward auxiliary force. At the same time, the lever remains in the dynamic balance state and turns with the extension of the power cylinder until the direction of the downward auxiliary force changes to the centripetal clamping force, and the lever is in the horizontal dynamic balance state. Therefore, on the one hand, based on the principle of the dynamic balance of the lever, as the force at the power end of the lever changes, the resistance end forms corresponding dynamic assistance and dynamic cooperation, so that the lever remains in dynamic balance during turning, that is, it is very labor-saving, and the probability of tipping or losing control is relatively low, thus reducing the safety hazard rate of the cutter barrel turnover; on the other hand, based on the horizontal or vertical state of the lever, the two ends of the corresponding power cylinder and the rotation fulcrum are distributed in a triangle to limit the lever in the dynamic balance to the current position, so as to meet the requirements of assembly or processing at the required angle. In addition, the structure is simple and easy to operate; on the third hand, based on the design of the limit position of the power cylinder, the lever can be more accurately positioned in the horizontal or vertical state, and then the synchronous turnover of the shield cutter barrel or positioning at the current turnover position or positioning in the horizontal or vertical state is synchronously controlled; on the fourth hand, based on the arc-shaped supporting plate, the lever and the shield cutter barrel are kept parallel and attached, and at the same time, the adhesion force of the shield cutter barrel is increased by means of magnetic adsorption. Furthermore, resistance can also be formed during the turnover process, and in cooperation with the decomposition in the horizontal and vertical directions, the cutter barrel is in a dynamic balance state at any position, which is convenient for safe turnover operation. At the same time, in the axial projection of the shield cutter barrel, the arc length formed by the arc-shaped supporting plate is at least 1 / 4 of the outer diameter of the barrel; the larger the contact area formed, the higher the clamping stability. The magnetic adsorption accessory is disassembled and assembled at the end of the arc-shaped supporting plate and is evenly spaced along the arc length.Reduce the probability of misalignment or displacement between the shield cutter barrel and the arc-shaped supporting plate; In the second aspect of the fifth aspect, the second resistance formation is variable and adapted to the flipping angle of the lever, so as to reduce the power output of the power cylinder based on the auxiliary force on the premise of meeting the clamping and positioning requirements, and then perform the flipping operation more labor-saving. At the same time, when the resistance end of the lever is upward, the second clamping part clamps on the outside of the shield cutter barrel from the lower part of the contact and forms an upward supporting auxiliary force; when the resistance end of the lever is downward, the second clamping part clamps on the outside of the shield cutter barrel from the upper part of the contact and forms a downward pressing auxiliary force. Based on the different movement directions of the resistance end, provide the same-direction auxiliary force, which is more convenient for the flipping operation; In addition, when the lever is in the horizontal or vertical state, the second clamping part acts on the end of the shield cutter barrel from the upper and lower parts at the same time, and the clamping force is a centripetal clamping force. Therefore, in the horizontal or vertical state, the lever does not require auxiliary force, and at this time the clamping force is a centripetal clamping force, which not only forms a stable clamping, but also forms the best support and the best clamping based on the state of the shield cutter barrel (when the lever is in the horizontal state, the first clamping part and the second clamping part cooperate to support the shield cutter barrel together; when the lever is in the vertical state, the first clamping part and the second clamping part cooperate to prevent the shield cutter barrel from moving down); In the sixth aspect, based on the structure of the second clamping part, the telescopic cylinder relatively spreads the left clamping arm and the right clamping arm and forms a clamping along the shield cutter barrel through the left clamping ear and the right clamping ear, and based on the adaptive change of the clamping force, the lever is in dynamic balance at any flipping angle, that is, the second resistance changes dynamically to meet the flipping requirements of dynamic balance. At the same time, under the guidance of the kidney-shaped hole, the movement of the left clamping arm and the right clamping arm is more stable, and on the premise of always maintaining the clamping force, change the direction of the force by changing the contact position, so that the lever is in dynamic balance (dynamic balance is a basic concept in physics, which means that an object is in a state of continuous movement or change, but due to the balance of various forces, the whole system remains in a static state); At the same time, when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece, a centripetal clamping force is formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from the upper part, a centripetal clamping force and a downward pressing auxiliary force are formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from the lower part, a centripetal clamping force and an upward pushing auxiliary force are formed.In short, the direction of the clamping force is changed based on the change of different resistance positions during clamping; in the seventh aspect, the telescopic direction of the telescopic cylinder is parallel to the extension direction of the pivot to avoid the deflection of the lever caused by the torque. At the same time, the telescopic cylinder and the power cylinder are both oil cylinders, and the two oil cylinders are synchronously supplied or unloaded with oil, that is, when the power cylinder is extended, the telescopic cylinder is also in an extended state, at this time, a downward auxiliary force is formed; when the power cylinder is retracted, the telescopic cylinder is also in a retracted state, at this time, an upward auxiliary force is formed; in the eighth aspect, when the lever is in a horizontal state, the power cylinder is diagonally supported Between the front end of the lever and the rear end of the flip seat, the power cylinder has a rear connecting end and a front connecting end, the rotating fulcrum is located between the rear connecting end and the front connecting end, and the rotating fulcrum, the front connecting end, and the rear connecting end are arranged in sequence from top to bottom; when the lever is in a vertical state, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the flip seat, wherein the power cylinder has a rear connecting end and a front connecting end, the rear connecting end, the front connecting end, and the rotating fulcrum are arranged in sequence from left to right, and the rear connecting end, the front connecting end, and the rotating fulcrum are arranged in sequence from bottom to top.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A shield cutter barrel tilting machine based on lever dynamic balance adjustment, characterized in that, The shield cutter barrel turnover machine includes a turnover base, a turnover frame rotatably installed on the turnover base through a horizontally extending pivot, a clamping component installed on the turnover frame and capable of carrying and clamping the shield cutter barrel in different directions, and a power cylinder arranged between the turnover base and the turnover frame. The pivot is the rotation fulcrum, the turnover frame is a lever with a power end and a resistance end, the telescopic end of the power cylinder is docked with the power end of the lever, and the clamping component includes a first clamping part fitting the outer circumference of the shield cutter barrel, and a second clamping part arranged at the resistance end of the lever and clamping the outer circumference of the shield cutter barrel. The first clamping part forms a first resistance that supports and hinders the relative sliding of the shield cutter barrel relative to itself; the second clamping part clamps and fits the outer side of the shield cutter barrel to form a second resistance that hinders the relative sliding of the shield cutter barrel relative to itself, and the second clamping part changes the direction of the second resistance with the turnover of the lever to form motion cooperation, so that the lever turns in dynamic balance. When the lever is in a horizontal or vertical state, the two ends of the power cylinder and the rotation fulcrum are distributed in a triangle to limit the lever in the dynamic balance to the current position.

2. The shield cutter head turning machine based on lever dynamic balance adjustment according to claim 1, wherein The power cylinder has a limit extended state and a limit contracted state. When the lever is in a horizontal state, the power cylinder is in the limit extended state; when the lever is in a vertical state, the power cylinder is in the limit contracted state.

3. The shield cutter head turnover machine based on lever dynamic balance adjustment according to claim 1, characterized in that, The first clamping part includes a first seat body fixed on the lever, an arc-shaped supporting plate fixed on the top of the first seat body, and magnetic suction attachments arranged on the arc-shaped supporting plate. The shield cutter barrel is magnetically adsorbed and fitted to the arc-shaped supporting plate from the circumferential side.

4. The shield cutter barrel turnover machine based on lever dynamic balance adjustment according to claim 3, characterized in that, In the axial projection of the shield cutter barrel, the arc length formed by the arc-shaped supporting plate is at least 1 / 4 of the outer diameter of the barrel; and / or, the magnetic suction attachments are detachably installed at the ends of the arc-shaped supporting plate and are evenly spaced along the arc length.

5. The shield cutter barrel turnover machine based on lever dynamic balance adjustment according to claim 1, wherein The second clamping part clamps the outer side of the shield cutter barrel, and the contact position formed changes with the turnover of the lever, and the magnitude and direction of the second resistance are changed during the change of the contact position. The changed direction force is an auxiliary force consistent with the movement direction of the lever.

6. The shield cutter barrel turnover machine based on lever dynamic balance adjustment according to claim 5, characterized in that, When the resistance end of the lever is upward, the second clamping part clamps the outer side of the shield cutter barrel from the contacted lower part and forms an upward supporting auxiliary force. When the resistance end of the lever is downward, the second clamping part clamps the outer side of the shield cutter barrel from the contacted upper part and forms a downward pressing auxiliary force.

7. The shield cutter head turning machine based on lever dynamic balance adjustment according to claim 6, characterized in that When the lever is in a horizontal or vertical state, the second clamping part acts on the end of the shield cutter barrel from the upper part and the lower part at the same time, and the clamping force is a centripetal clamping force.

8. The shield cutter barrel turnover machine based on lever dynamic balance adjustment according to claim 1, characterized in that The second clamping part includes a positioning arm fixed on the lever away from the power cylinder connection end and extending along the length direction of the pivot, a left clamping arm and a right clamping arm respectively rotatably and slidably connected to the left and right ends of the positioning arm, a left clamping ear and a right clamping ear respectively arranged at the clamping ends of the left clamping arm and the right clamping arm, and a telescopic cylinder arranged between the power ends of the left clamping arm and the right clamping arm, wherein sliding grooves are respectively arranged on the left clamping arm and the right clamping arm, the left and right ends of the positioning arm are slidably connected to the sliding grooves, and the left and right ends of the positioning arm are located between the corresponding side clamping ends and the power ends, wherein the telescopic cylinder relatively spreads the left clamping arm and the right clamping arm and forms a clamping force along the shield cutter barrel through the left clamping ear and the right clamping ear, and based on the adaptive change of the clamping force, the lever is in dynamic balance at any flipping angle.

9. The shield cutter head turnover machine based on lever dynamic balance adjustment according to claim 8, wherein The left clamp arm and the right clamp arm are respectively provided with waist-shaped holes inclined inward from top to bottom, wherein the power cylinder drives the lever to rotate around the rotation fulcrum and is pressed down by the positioning arm to drive the power ends of the left clamp arm and the right clamp arm away from each other to adjust the clamping force formed by the left clamp ear and the right clamp ear.

10. The shield cutter head turning machine based on lever dynamic balance adjustment according to claim 9, characterized in that The left clamping arm and the right clamping arm each have two pieces, and the two left clamping arms are fixed from both ends by the left mounting shaft, wherein the left mounting shaft is the upper left shaft and the lower left shaft located at the clamping end and the power end, wherein the upper left shaft is pivotally connected to the left clamping ear, and the lower left shaft is pivotally connected to the left end of the telescopic cylinder; the two right clamping arms are fixed from both ends by the right mounting shaft, wherein the right mounting shaft is the upper right shaft and the lower right shaft located at the clamping end and the power end, wherein the upper right shaft is pivotally connected to the right clamping ear, and the lower right shaft is pivotally connected to the right end of the telescopic cylinder.

11. The shield cutter barrel tilter based on lever dynamic balance adjustment according to claim 10, characterized in that, An aligned left waist-shaped hole group is formed on the two left clamp arms, and an aligned right waist-shaped hole group is formed on the two right clamp arms. The left and right ends of the positioning arm respectively form a left positioning shaft and a right positioning shaft that penetrate the two sides of the positioning arm, wherein the left positioning shaft and the right positioning shaft are respectively slidably installed on the left waist-shaped hole group and the right waist-shaped hole group.

12. The shield cutter head turning machine based on lever dynamic balance adjustment according to claim 8, wherein, The left clamping arm and the right clamping arm are symmetrically clamped on both sides of the end of the shield cutter barrel about the center of the shield cutter barrel, and the left clamping ear includes a left arc-shaped piece that fits the left side of the shield cutter barrel and a left connecting ear fixed on the left side of the left arc-shaped piece. The left clamping arm is pivoted to the left connecting ear from the clamping end, and the clamping end abuts against the left arc-shaped piece; the right clamping ear includes a right arc-shaped piece that fits the right side of the shield cutter barrel and a right connecting ear fixed on the right side of the right arc-shaped piece. The right clamping arm is pivoted to the right connecting ear from the clamping end, and the clamping end abuts against the right arc-shaped piece, wherein when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece, a centripetal clamping force is formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from the top, a centripetal clamping force and a downward pressing auxiliary force are formed; when the clamping end abuts against the left arc-shaped piece and the right arc-shaped piece from the bottom, a centripetal clamping force and an upward pushing auxiliary force are formed.

13. The shield cutter head turning machine based on lever dynamic balance adjustment according to claim 8, characterized in that, The telescopic direction of the telescopic cylinder is parallel to the extension direction of the pivot; and / or, the telescopic cylinder and the power cylinder are both oil cylinders, and the two oil cylinders supply or unload oil synchronously.

14. The shield cutter head turnover machine based on lever dynamic balance adjustment according to any one of claims 1 to 13, characterized in that, When the lever is in a horizontal state, the power cylinder is obliquely supported between the front end of the lever and the rear end of the flip seat, wherein the power cylinder has a rear connecting end and a front connecting end, the rotating fulcrum is located between the rear connecting end and the front connecting end, and the rotating fulcrum, the front connecting end, and the rear connecting end are arranged in sequence from top to bottom; When the lever is in a vertical state, the power cylinder is obliquely supported between the lower end of the lever and the rear end of the turnover seat. The power cylinder has a rear connection end and a front connection end. The rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from bottom to top.

15. A shield cutter barrel flipping process based on lever dynamic balance adjustment, characterized in that, This process uses the shield cutter head turnover machine based on the dynamic balance adjustment of the lever described in any one of claims 1 to 14, and it includes the following steps: S1. Installation of the shield cutter head Adjust the lever to a horizontal state, then align the center of the shield cutter head with the rotation fulcrum. The shield cutter head is horizontally clamped on the clamping component, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the turnover seat. The lever is in a dynamic balance state. The power cylinder has a rear connection end and a front connection end. The rotation fulcrum is located between the rear connection end and the front connection end, and the rotation fulcrum, the front connection end, and the rear connection end are arranged in sequence from top to bottom; S2. Turning over of the shield cutter head Based on the power provided by the power cylinder to contract downward and leftward, the lever rotates around the rotation fulcrum and turns rightward. The clamping component forms a clamping resistance and an upward auxiliary force, and at the same time, the lever remains in a dynamic balance state and turns over with the contraction of the power cylinder until the direction of the upward auxiliary force changes to the centripetal clamping force, and the lever is in a vertical dynamic balance state. The power cylinder is obliquely supported between the lower end of the lever and the rear end of the turnover seat. The power cylinder has a rear connection end and a front connection end. The rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connection end, the front connection end, and the rotation fulcrum are arranged in sequence from bottom to top; At the same time, when the lever rotates around the rotation fulcrum and resets to the horizontal state, based on the power provided by the power cylinder to extend upward and rightward, the lever rotates around the rotation fulcrum and turns leftward. The clamping component forms a clamping resistance and a downward auxiliary force, and at the same time, the lever remains in a dynamic balance state and turns over with the extension of the power cylinder until the direction of the downward auxiliary force changes to the centripetal clamping force, and the lever is in a horizontal dynamic balance state.

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