Shield cutter drum turning machine and turning process based on lever dynamic balance adjustment

Abstract

The present invention discloses a shield cutter barrel flipping machine and flipping process based on dynamic balance adjustment of a lever. The flipping machine includes a flipping seat, a flipping frame, a clamping component, and a power cylinder, wherein the pivot is a rotating fulcrum, the flipping frame is a lever with a power end and a resistance end, and the telescopic end of the power cylinder is docked with the power end of the lever. On the one hand, the present invention is based on the principle of dynamic balance of the lever. As the force applied by the power end of the lever changes, the resistance end forms corresponding power assistance and power cooperation, so that the lever maintains dynamic balance and flips, that is, it is very labor-saving, and the probability of overturning or losing control is low, thereby reducing the safety hazard rate of the cutter barrel flipping; on the other hand, based on the horizontal or vertical state of the lever, the corresponding two ends of the power cylinder and the rotating fulcrum are distributed in a triangular shape to limit the lever to the current position in dynamic balance, thereby meeting the requirements for assembly or processing at the required angle. In addition, the structure is simple and easy to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of turning operations, and in particular relates to a shield cutter barrel turning machine based on dynamic balance adjustment of a lever. The present invention also relates to a shield cutter barrel turning process based on dynamic balance adjustment of a lever. Background Art

[0002] At present, a roller cutter is installed in the cutter barrel of a shield machine. Since the cutter barrels come in different sizes and weigh about one ton, when the cutter barrel needs to be disassembled or assembled with cutters or other components, a crane is needed to lift the cutter barrel and install it on a flip platform. The flip platform is then flipped using a gear transmission to switch the cutter barrel between horizontal and vertical states to meet the needs of cutter barrel assembly or other processing.

[0003] However, in the above-mentioned flipping process, there are the following technical defects:

[0004] 1) Due to the weight of the knife barrel, if full power is used to drive it to flip, not only will the required power be high, but there is also a high probability of the knife barrel tipping over or losing control during the flipping process. In other words, it is not only laborious and costly, but also poses a major safety hazard;

[0005] 2) Regardless of the state of the flip platform, the gears are in a state of engagement and stress, resulting in a short service life of the gear components. At the same time, the flip positioning angle is completely based on the parameters of the gears, that is, it is impossible to accurately stay in the required horizontal and vertical positions. This will cause errors in the disassembly and assembly of the knife barrel, causing serious inconvenience to the actual operation. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new shield cutter drum turning machine based on dynamic balance adjustment of a lever.

[0007] At the same time, the present invention also relates to a shield cutter barrel flipping process based on dynamic balance adjustment of a lever.

[0008] To achieve the above object, the present invention adopts the following scheme:

[0009] The invention relates to a shield cutter barrel flipping machine based on dynamic balance adjustment of a lever, which includes a flip seat, a flip frame installed on the flip seat through a horizontally extending pivot, a clamping component installed on the flip frame and capable of bearing and clamping the shield cutter barrel in different directions, and a power cylinder arranged between the flip seat and the flip frame, wherein the pivot is a rotation fulcrum, the flip frame is a lever with a power end and a resistance end, the telescopic end of the power cylinder is connected to the power end of the lever, the clamping component includes a first clamping part that fits the outer periphery of the shield cutter barrel, and a second clamping part that is arranged at the resistance end of the lever and clamped on the outer periphery of the shield cutter barrel, wherein the first clamping part forms a first resistance that supports and hinders the shield cutter barrel from sliding 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 shield cutter barrel from sliding relative to itself, and the second clamping part changes the direction of the second resistance as the lever flips to form a motion cooperation, so that the lever flips in dynamic balance, and 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 to the current position in dynamic balance.

[0010] 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, thereby synchronously controlling the synchronous flipping of the shield cutter barrel or positioning it in the current flipping position or in the horizontal or vertical state.

[0011] According to a specific embodiment and preferred aspect of the present invention, the first clamping portion includes a first base fixed to the lever, an arc-shaped support plate fixed to the top of the first base, and a magnetic adsorption member arranged on the arc-shaped support plate, wherein the shield cutter barrel is magnetically adsorbed and adhered to the arc-shaped support plate from the circumferential side. The arc-shaped support plate keeps the lever and the shield cutter barrel parallel to each other, and the magnetic adsorption method increases the adhesion of the shield cutter barrel, thereby forming resistance during the flipping process. In combination with the decomposition in the horizontal and vertical directions, the cutter barrel is in a dynamic equilibrium state at any position, facilitating safe flipping operations.

[0012] Preferably, the arc length formed by the curved support plate in the axial projection of the shield cutter barrel is at least 1 / 4 of the barrel's outer diameter; the larger the contact area, the greater the stability of the clamping. The magnetic attachment elements are detachable from the ends of the curved support plate and evenly spaced along the length of the arc, reducing the probability of misalignment or displacement between the shield cutter barrel and the curved support plate.

[0013] According to another specific embodiment and preferred aspect of the present invention, the second clamping portion is clamped to the outside of the shield cutter barrel, and the interference position changes with the lever's flipping. The magnitude and direction of the second resistance change as the interference position changes, wherein the changed directional force is an auxiliary force consistent with the direction of the lever's movement. In short, the second resistance is variable and adapts to the lever's flipping angle. Therefore, while maintaining the clamping position, the auxiliary force reduces the power output of the power cylinder, thereby reducing the effort required for the flipping operation.

[0014] Preferably, when the resistance end of the lever is pointing upward, the second clamping portion clamps onto the outer side of the shield cutter barrel from its lower contact portion, generating an upward supporting force. When the resistance end of the lever is pointing downward, the second clamping portion clamps onto the outer side of the shield cutter barrel from its upper contact portion, generating a downward supporting force. Based on the different movement directions of the resistance ends, providing supporting forces in the same direction facilitates the flipping operation.

[0015] In some specific embodiments, when the lever is in a horizontal or vertical position, the second clamping portion simultaneously applies a centripetal clamping force to the end of the shield cutter barrel from both the upper and lower portions. Therefore, in either the horizontal or vertical position, the lever requires no auxiliary force, and the clamping force is centripetal. This not only provides a stable clamping force, but also provides optimal support and clamping based on the position of the shield cutter barrel (when the lever is in a horizontal position, the first and second clamping portions cooperate to support the shield cutter barrel; when the lever is in a vertical position, the first and second clamping portions cooperate to prevent the shield cutter barrel from moving downward).

[0016] According to another specific embodiment and preferred aspect of the present invention, the second clamping portion includes a positioning arm fixed to the end of the lever away from the connection end of the power cylinder 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 provided at the clamping ends of the left clamping arm and the right clamping arm, and a telescopic cylinder provided between the power ends of the left clamping arm and the right clamping arm, wherein a sliding groove is provided on the left clamping arm and the right clamping arm respectively, 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 clamping ends and the power ends on the corresponding sides, wherein the telescopic cylinder relatively opens the left clamping arm and the right clamping arm and forms a clamp 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 changes dynamically to meet the flipping requirements of dynamic balance.

[0017] Preferably, a waist-shaped hole inclined inward from top to bottom is provided on each of the left and right clamping arms, wherein the power cylinder drives the lever to rotate about the fulcrum and is pressed downward by the positioning arm to drive the power ends of the left and right clamping arms away from each other, thereby adjusting the clamping force formed by the left and right clamping ears. Under the guidance of the waist-shaped hole, the movement of the left and right clamping arms is made more stable, and while the clamping force is always maintained, the direction of the force is changed by the change in the position of the resistance, so that the lever is in dynamic equilibrium (dynamic equilibrium is a basic concept in physics, which means that an object is in a state of constant motion or change, but the balancing effect of various forces keeps the entire system in a static state).

[0018] In some specific embodiments, the left and right clamping arms each comprise two pieces. The two left clamping arms are secured at both ends by left mounting shafts, wherein the left mounting shafts comprise an upper left shaft and a lower left shaft located at the clamping and power ends, 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 secured at both ends by right mounting shafts, wherein the right mounting shafts comprise an upper right shaft and a lower right shaft located at the clamping and power ends, 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. This facilitates assembly of the various components, increases rigidity in the two-piece assembly, and also facilitates installation of components such as the positioning arm and the telescopic cylinder.

[0019] Preferably, the two left clamping arms are formed with aligned left waist-shaped holes, and the two right clamping arms are formed with aligned right waist-shaped holes. The left and right ends of the positioning arms are formed with left and right positioning shafts that penetrate the two sides of the positioning arms, respectively. The left and right positioning shafts are slidably mounted on the left and right waist-shaped hole groups, respectively. Based on the waist hole design, the two clamping arms maintain synchronous movement.

[0020] According to another specific embodiment and preferred aspect of the present invention, 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 pivotally connected to the left connecting ear from the clamping end, and the clamping end is in contact with 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 pivotally connected to the right connecting ear from the clamping end, and the clamping end is in contact with the right arc-shaped piece, wherein when the clamping end is in contact with the left arc-shaped piece and the right arc-shaped piece, a centripetal clamping force is formed; when the clamping end is in contact with the left arc-shaped piece and the right arc-shaped piece from the top, a centripetal clamping force and a downward auxiliary force are formed; when the clamping end is in contact with the left arc-shaped piece and the right arc-shaped piece from the bottom, 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 interference positions during clamping.

[0021] Preferably, the telescopic cylinder's extension and retraction direction is parallel to the pivot axis's extension direction to avoid torque that could cause lever deflection. Furthermore, both the telescopic cylinder and the power cylinder are oil cylinders, and the two cylinders supply or unload oil synchronously. That is, when the power cylinder extends, the telescopic cylinder also extends, generating a downward assist force; when the power cylinder retracts, the telescopic cylinder also retracts, generating an upward assist force.

[0022] 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 flip seat, wherein the power cylinder has a rear connecting end and a front connecting end, the rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation fulcrum, the front connecting end, and the rear connecting end are arranged in order from top to bottom;

[0023] 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, and 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.

[0024] Another technical solution of the present invention is: a shield cutter barrel flipping process based on lever dynamic balance adjustment, which includes the following steps:

[0025] S1. Shield cutter installation

[0026] Adjust the lever to a 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, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the flip seat, wherein the lever is in a dynamically balanced state, the power cylinder has a rear connecting end and a front connecting end, and the rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation fulcrum, the front connecting end, and the rear connecting end are arranged in order from top to bottom;

[0027] S2, shield cutter drum flip

[0028] Based on the downward and leftward power contraction provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward supporting auxiliary force, while keeping the lever in a dynamic balance state and flipping with the contraction of the power cylinder until the direction of the upward supporting auxiliary force changes to a centripetal clamping force, and the lever is in a vertical dynamic balance state, wherein 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, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from bottom to top;

[0029] At the same time, when the lever is reset to a horizontal state around the rotation fulcrum, based on the upward and rightward power extension provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the left, and the clamping parts form clamping resistance and downward auxiliary force, while keeping the lever in a dynamic balance state and flipping with the extension of the power cylinder until the direction of the downward auxiliary force changes to a centripetal clamping force, and the lever is in a horizontal dynamic balance state.

[0030] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0031] In the existing shield cutter barrel flipping process, based on the weight of the cutter barrel, if full power is used to drive it to flip, not only the required power is high, but also the cutter barrel has a high probability of overturning or losing control during the flipping process, that is, it is not only laborious and costly, but also poses a great safety hazard; at the same time, no matter what state the flipping platform is in, the gears are in a meshing and stressed state, resulting in a low service life of the gear components, and at the same time the formed flipping positioning angle is completely based on the parameters of the gears, that is, it is impossible to accurately stay in the required horizontal and vertical positions, so that the disassembly and assembly of the cutter barrel will cause errors, which brings serious inconvenience to the actual operation and other shortcomings. The present invention comprehensively designs the structure of the shield cutter barrel flipping machine based on the dynamic balance adjustment of the lever, which cleverly solves the various existing shortcomings. After adopting the shield cutter drum turning machine based on lever dynamic balance adjustment, first, adjust the lever to a horizontal state, then align the center of the shield cutter drum with the rotation fulcrum, and the shield cutter drum 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 turning seat, wherein the lever is in a dynamic balance state, the power cylinder has a rear connecting end and a front connecting end, the rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation fulcrum, the front connecting end, and the rear connecting end are arranged in sequence from top to bottom; then, based on the power When the cylinder provides downward and leftward power contraction, the lever rotates around the rotating fulcrum and flips to the right, and the clamping parts form clamping resistance and upward auxiliary force, while keeping the lever in a dynamic balance state and flipping 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, wherein 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, and 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 end, front connecting end and rotating fulcrum are arranged in sequence from bottom to top; at the same time, when the lever is reset to a horizontal state around the rotating fulcrum, based on the upward and rightward power extension provided by the power cylinder, the lever rotates around the rotating fulcrum and flips to the left, and the clamping component forms a clamping resistance and a downward auxiliary force, while keeping the lever in a dynamic balance state and flipping with the extension of the power cylinder, until the direction of the downward auxiliary force changes to the centripetal clamping force, the lever is in a horizontal dynamic balance state. Therefore, on the one hand, the present invention is based on the dynamic balance principle of the lever. As the force of the power end of the lever changes, the resistance end forms corresponding power assistance and power cooperation, so that the lever maintains dynamic balance and flips, that is, it is very labor-saving, and the probability of overturning or loss of control is low, thereby reducing the safety hazard rate of the knife barrel flipping; on the other hand, based on the horizontal or vertical state of the lever, the corresponding two ends of the power cylinder and the rotating fulcrum are distributed in a triangle to limit the lever to the current position in dynamic balance, thereby meeting the assembly or processing at the required angle. In addition, the structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a schematic front view (vertical state) of the shield cutter drum turning machine based on lever dynamic balance adjustment of the present invention;

[0033] Figure 2 for Figure 1 Schematic top view of

[0034] Figure 3 It is a front view schematic diagram (horizontal state) of the shield cutter drum turning machine based on lever dynamic balance adjustment of the present invention;

[0035] Figure 4 for Figure 3 Schematic diagram of the left side;

[0036] Among them: 1. Flip seat;

[0037] 2. Turning rack;

[0038] 3. Clamping components; 31. First clamping portion; 310. First base; 311. Arc-shaped supporting plate; 312. Magnetic adsorption member; 32. Second clamping portion; 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. Left upper shaft; a2. Left lower shaft; b. Right mounting shaft; b1. Right upper shaft; b2. Right lower shaft; c1. Left waist-shaped hole group; c2. Right waist-shaped hole group; d1. Left positioning shaft; d2. Right positioning shaft;

[0039] 4. Power cylinder; 4a. Rear connecting end; 4b. Front connecting end;

[0040] T, shield cutter barrel; s, pivot. DETAILED DESCRIPTION

[0041] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0043] Furthermore, 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 number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0046] like Figures 1 to 4 As shown, the shield cutter barrel turning machine based on lever dynamic balance adjustment of this embodiment includes a turning seat 1, a turning frame 2 dynamically mounted on the turning seat 1 via a horizontally extending pivot s, a clamping component 3 mounted on the turning frame 2 and capable of forming a load-bearing and different-direction clamping device for the shield cutter barrel, and a power cylinder 4 arranged between the turning seat 1 and the turning frame 2. The pivot s is a rotating fulcrum, and the turning frame 2 has a lever at a power end and a resistance end ( Figure 3 The front end in the middle is the power end, and the rear end is the resistance end), the telescopic end of the power cylinder 4 is connected to the power end of the lever.

[0047] 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 collaboration, 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.

[0048] In this example, the first clamping portion 31 includes a first base 310 fixed to the lever, an arc-shaped support plate 311 fixed to the top of the first base 310, and a magnetic adsorption member 312 arranged on the arc-shaped support plate 311, wherein the shield cutter barrel T is magnetically adsorbed and adhered to the arc-shaped support plate 311 from the circumferential side. The arc-shaped support plate 311 keeps the lever and the shield cutter barrel T parallel to each other, and at the same time, the magnetic adsorption method increases the adhesion of the shield cutter barrel T, thereby forming resistance during the flipping process. Combined with the horizontal and vertical decomposition, the cutter barrel is in a dynamic equilibrium state at any position, facilitating safe flipping operations. In the axial projection of the shield cutter 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 greater the stability of the clamping. The magnetic adsorption member 312 is detachable 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.

[0049] The second clamping portion 32 is clamped on the outside of the shield cutter barrel T, and the resulting resistance position changes as the lever flips. The magnitude and direction of the second resistance force change as the resistance position changes, with the changed directional force acting as an auxiliary force consistent with the direction of the lever's movement. In short, the second resistance force is variable and adapts to the lever's flip angle. This reduces the power output of the power cylinder based on the auxiliary force while ensuring clamping and positioning, allowing for a more labor-saving flipping operation. When the lever's resistance end is pointing upward, the second clamping portion 32 clamps on the outside of the shield cutter barrel T from the lower contact portion and creates an upward supporting auxiliary force. When the lever's resistance end is pointing downward, the second clamping portion 32 clamps on the outside of the shield cutter barrel T from the upper contact portion and creates a downward pressing auxiliary force. Providing auxiliary forces in the same direction based on the different movement directions of the resistance ends facilitates flipping operations. When the lever is in a horizontal or vertical position, the second clamping portion 32 acts on the end of the shield cutter barrel from both the upper and lower portions simultaneously, and the clamping force is a centripetal supporting force. Therefore, in the horizontal or vertical state, the lever does not require auxiliary force, and the clamping force at this time is a centripetal clamping force. Not only is the clamping formed stable, but it also forms optimal support and optimal 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 hinder the downward movement of the shield cutter barrel T).

[0050] When the lever 320 is unlocked, the lever 320 is unlocked and the spring 330 is unlocked. Based on the synchronous movement of the telescopic cylinder and the power cylinder, the second resistance changes dynamically to meet the flipping requirement of dynamic balance.

[0051] Furthermore, the sliding slot h is a waist-shaped hole provided on the left clamping arm 321 and the right clamping arm 322, respectively, and is inclined inward from top to bottom. The power cylinder 4 drives the lever to rotate about the fulcrum, and the positioning arm 320 presses downward to drive the power ends of the left clamping arm 321 and the right clamping arm 322 away from each other, thereby adjusting the clamping force formed by the left clamping ear 323 and the right clamping ear 324. Guided by the waist-shaped hole, the movement of the left clamping arm 321 and the right clamping arm 322 is more stable. While maintaining the clamping force, the force is redirected by the change in the opposing position, thereby keeping the lever in dynamic equilibrium. (Dynamic equilibrium is a fundamental concept in physics, meaning that an object is in a state of constant motion or change, but the balancing action of various forces keeps the entire system in a static state.) In this example, both the left and right clamping arms 321 and 322 are comprised of two pieces. The left clamping arm 321 is secured at both ends by a left mounting axis a, comprising an upper left axis a1 and a lower left axis a2 located at the clamping and power ends. The upper left axis a1 is pivotally connected to the left clamping ear 323, while the lower left axis a2 is pivotally connected to the left end of the telescopic cylinder 325. The right clamping arm 322 is secured at both ends by a right mounting axis b, comprising an upper right axis b1 and a lower right axis b2 located at the clamping and power ends. The upper right axis b2 is pivotally connected to the right clamping ear 324, while the lower right axis b2 is pivotally connected to the right end of the telescopic cylinder 325. This facilitates assembly of the various components, increases rigidity in the two-piece assembly, and facilitates installation of components such as the positioning arm and telescopic cylinder. The two left clamping arms 321 are formed with aligned left waist-shaped holes (c1), while the two right clamping arms 322 are formed with aligned right waist-shaped holes (c2). The left and right ends of the positioning arm 320 are formed with left and right positioning axes (d1 and d2), which penetrate the positioning arms. The left and right positioning axes (d1 and d2) are slidably mounted on the left and right waist-shaped holes (c1 and c2), respectively. The waist hole design allows the two clamping arms to maintain synchronous movement.

[0052] In some specific embodiments, the left clamping arm 321 and the right clamping arm 322 are symmetrically clamped on both sides of the end of the shield cutter barrel T about the center of the shield cutter barrel T, and the left clamping ear 323 includes a left arc-shaped piece p1 that fits the left side of the shield cutter barrel T, and a left connecting ear p2 fixed to the left side of the left arc-shaped piece p1. The left clamping arm 321 is pivotally connected to the left connecting ear p2 from the clamping end, and the clamping end contacts the left arc-shaped piece p1; the right clamping ear 324 includes a right arc-shaped piece q1 that fits the right side of the shield cutter barrel T, and a left connecting ear p2 fixed to the left side of the left arc-shaped piece p1. At the right connecting ear q2 on the right side of the right curved piece q1, the right clamping arm 322 is pivotally connected to the right connecting ear q2 from its clamping end, and the clamping end contacts the right curved piece q1. When the clamping end contacts the left curved piece p1 and the right curved piece q1 from above, a centripetal clamping force and a downward auxiliary force are generated; when the clamping end contacts the left curved piece p1 and the right curved piece q1 from below, a centripetal clamping force and an upward auxiliary force are generated. In short, the direction of the clamping force changes based on the different contact positions during clamping.

[0053] Furthermore, the telescopic cylinder 325 extends and retracts in a direction parallel to the direction of extension of the pivot axis s, preventing torque from causing lever deflection. Furthermore, both the telescopic cylinder 325 and the power cylinder 4 are hydraulic cylinders, and both cylinders supply and unload oil synchronously. That is, when the power cylinder 4 extends, the telescopic cylinder 325 also extends, generating a downward assisting force; when the power cylinder 4 retracts, the telescopic cylinder 325 also retracts, generating an upward assisting force.

[0054] In some embodiments, the power cylinder 4 has an extreme extension state and an extreme contraction state. When the lever is in a horizontal position, the power cylinder 4 is in the extreme extension state; when the lever is in a vertical position, the power cylinder 4 is in the extreme contraction state. Based on the design of the extreme positions, the lever is more accurately positioned in the horizontal or vertical state, thereby synchronously controlling the T-shaped synchronous flipping of the shield cutter barrel or positioning it in the current flip position or in the horizontal or vertical state. At the same time, when the lever is in a horizontal state, the power cylinder 4 is obliquely supported between the front end of the lever and the rear end of the flip seat 1, wherein the power cylinder 4 has a rear connecting end 4a and a front connecting end 4b, and the rotating fulcrum (pivot s) is located between the rear connecting end 4a and the front connecting end 4b, and the rotating fulcrum, the front connecting end 4b, and the rear connecting end 4a are arranged in sequence from top to bottom; when the lever is in a vertical state, the power cylinder 4 is obliquely supported between the lower end of the lever and the left end of the flip seat 1, wherein the power cylinder 4 has a rear connecting end 4a and a front connecting end 4b, and the rear connecting end 4a, the front connecting end 4b, and the rotating fulcrum are arranged in sequence from left to right, and the rear connecting end 4a, the front connecting end 4b, and the rotating fulcrum are arranged in sequence from bottom to top.

[0055] In summary, the shield cutter barrel flipping process based on lever dynamic balance adjustment includes the following steps:

[0056] S1. Shield cutter installation

[0057] Adjust the lever to a 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, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the flip seat, wherein the lever is in a dynamically balanced state, the power cylinder has a rear connecting end and a front connecting end, and the rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation fulcrum, the front connecting end, and the rear connecting end are arranged in order from top to bottom;

[0058] S2, shield cutter drum flip

[0059] Based on the downward and leftward power contraction provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward supporting auxiliary force, while keeping the lever in a dynamic balance state and flipping with the contraction of the power cylinder until the direction of the upward supporting auxiliary force changes to a centripetal clamping force, and the lever is in a vertical dynamic balance state, wherein 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, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from bottom to top;

[0060] At the same time, when the lever is reset to a horizontal state around the rotation fulcrum, based on the upward and rightward power extension provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the left, and the clamping parts form clamping resistance and downward auxiliary force, while keeping the lever in a dynamic balance state and flipping with the extension of the power cylinder until the direction of the downward auxiliary force changes to a centripetal clamping force, and the lever is in a horizontal dynamic balance state.

[0061] Therefore, after adopting the shield cutter barrel flipping machine based on dynamic balance adjustment of the lever, first, adjust the lever to a horizontal state, then align the center of the shield cutter barrel with the rotating fulcrum, and 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 flipping seat, wherein the lever is in a dynamic balance state, 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; then, based on the downward and leftward power contraction provided by the power cylinder, the lever rotates around the rotating fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward auxiliary force, while keeping the lever in dynamic balance. The lever is in a vertical state of dynamic balance when the power cylinder contracts and the direction of the upward auxiliary force changes to the centripetal clamping force, and the lever is in a vertical state of dynamic balance, wherein 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, and 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; at the same time, when the lever is reset to a horizontal state around the rotating fulcrum, based on the upward and rightward power extension provided by the power cylinder, the lever rotates around the rotating fulcrum and flips to the left, and the clamping parts form a clamping resistance and a downward auxiliary force, while keeping the lever in a state of dynamic balance and flipping with the extension of the power cylinder until When the direction of the downward auxiliary force changes to the centripetal clamping force, the lever is in a horizontal dynamic equilibrium state. Therefore, on the one hand, the present invention is based on the dynamic balance principle of the lever. 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 can flip in dynamic balance, that is, it is very labor-saving, and the probability of overturning or losing control is low, thereby reducing the safety hazard rate of the knife barrel flipping; on the other hand, based on the horizontal or vertical state of the lever, the corresponding two ends of the power cylinder and the rotating fulcrum are distributed in a triangular shape to limit the lever to the current position in dynamic balance, thereby meeting the assembly or processing at the required angle. In addition, the structure is simple and easy to operate; the third aspect is based on power The design of the cylinder limit position allows for more accurate positioning of the lever in a horizontal or vertical state, thereby synchronously controlling the synchronous flipping of the shield cutter barrel or positioning it in the current flipping position or in a horizontal or vertical state. Fourthly, the lever and the shield cutter barrel are kept parallel to each other based on the arc-shaped support plate, while the shield cutter barrel adhesion is increased based on magnetic adsorption, thereby forming resistance during the flipping process. Combined with the horizontal and vertical decomposition, the cutter barrel is in a dynamic equilibrium state at any position, facilitating safe flipping operations. At the same time, in the axial projection of the shield cutter barrel, the arc length formed by the arc-shaped support plate is at least 1 / 4 of the outer diameter of the barrel. The larger the contact area formed, the greater the stability of the clamping. The magnetic adsorption parts are disassembled and assembled at the ends of the arc-shaped support plate and are evenly spaced along the arc length.Reduce the probability of misalignment or displacement between the shield cutter barrel and the arc-shaped support plate; on the fifth aspect, 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. At the same time, when the resistance end of the lever is upward, the second clamping part is clamped on the outside of the shield cutter barrel from the lower contact part, and forms an upward auxiliary force; when the resistance end of the lever is downward, the second clamping part is clamped on the outside of the shield cutter barrel from the upper contact part, and forms a downward auxiliary force. Based on the different movement directions of the resistance end, an auxiliary force in the same direction is provided, which is more convenient for the flipping operation; in addition, 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 top and bottom at the same time, and the clamping force is a centripetal clamping force. Therefore, in the horizontal or vertical state, the lever does not need an auxiliary force, and the clamping force at this time 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 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 hinder the downward movement of the shield cutter barrel); in the sixth aspect, based on the structure of the second clamping part, 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 clamping force Adapting to the changes makes the lever in dynamic balance at any flipping angle, that is, the second resistance changes dynamically to meet the flipping requirement of dynamic balance. At the same time, under the guidance of the waist-shaped hole, the movement of the left clamping arm and the right clamping arm is more stable, and under the premise of maintaining the clamping force, the resistance position is changed to change the direction of the side force, 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 constant motion or change, but because of the balancing effect of various forces, the entire system remains in a static state); at the same time, when the clamping end contacts the left arc piece and the right arc piece, a centripetal clamping force is formed; when the clamping end contacts the left arc piece and the right arc piece from the top, a centripetal clamping force and a downward auxiliary force are formed; when the clamping end contacts the left arc piece and the right arc piece from the bottom, 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 resistance positions in the clamping; the seventh aspect is that the telescopic direction of the telescopic cylinder is parallel to the extension direction of the pivot, so as 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 supply or unload oil synchronously, 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; the eighth aspect is that 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.

[0062] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A shield cutter drum turning machine based on lever dynamic balance adjustment, characterized in that: The shield cutter barrel turning machine includes a turning seat, a turning frame mounted on the turning seat by a horizontally extending pivot, a clamping component mounted on the turning frame and capable of forming a load-bearing and different direction clamping shield cutter barrel, and a power cylinder arranged between the turning seat and the turning frame, wherein the pivot is a rotation fulcrum, the turning 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, the clamping component includes a first clamping part that fits the outer periphery of the shield cutter barrel, a second clamping part that is arranged at the resistance end of the lever and clamped on the outer periphery of the shield cutter barrel, wherein the first clamping part The first resistance is formed to support and hinder the shield cutter barrel from sliding relative to itself; the second clamping part clamps and fits the outer side of the shield cutter barrel to form a second resistance to hinder the shield cutter barrel from sliding relative to itself, and the second clamping part changes the direction of the second resistance as the lever flips to form a motion collaboration, so that the lever flips in dynamic balance, and the lever is in a horizontal or vertical state, and the two ends of the power cylinder and the rotation fulcrum are distributed in a triangular shape to limit the lever to the current position in dynamic balance; the second clamping part includes a positioning arm fixed to the end of the lever away from the connection of the power cylinder 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 the telescopic cylinder and the power cylinder are both oil cylinders, and the two oil cylinders supply or unload oil synchronously; the left clamping ear includes a left arc-shaped piece that fits the left side of the shield cutter barrel, 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 is in contact with the left arc-shaped piece; the right clamping ear includes a right An arc-shaped piece, a right connecting ear fixed on the right side of the right arc-shaped piece, a right clamping arm pivotally connected 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 power cylinder extends, the telescopic cylinder is also in an extended state, and 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 auxiliary force are formed; when the power cylinder contracts, the telescopic cylinder is also in a contracted state, and 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 auxiliary force are formed.

2. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1 is characterized in that: The power cylinder has an extreme extension state and an extreme contraction state, wherein 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.

3. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1 is characterized in that: The first clamping part includes a first base body fixed on the lever, an arc-shaped support plate fixed on the top of the first base body, and a magnetic adsorption part arranged on the arc-shaped support plate, wherein the shield cutter barrel is magnetically adsorbed and adhered to the arc-shaped support plate from the circumferential side.

4. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 3 is characterized in that: In the axial projection of the shield cutter barrel, the arc length formed by the arc-shaped support plate is at least 1 / 4 of the outer diameter of the barrel.

5. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 3 is characterized in that: The magnetic adsorption components can be detachably mounted on the end of the arc-shaped supporting plate and are evenly spaced along the arc length.

6. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1, characterized in that: The second clamping portion is clamped on the outside of the shield cutter barrel and the formed resistance position changes with the flipping of the lever, and the size and direction of the second resistance change during the change of the resistance position, wherein the changed directional force is an auxiliary force consistent with the direction of lever movement.

7. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 6, characterized in that: When the resistance end of the lever is upward, the second clamping part is clamped on the outer side of the shield cutter barrel from the contacting lower part, and forms an auxiliary upward force; When the resistance end of the lever is downward, the second clamping portion is clamped on the outer side of the shield cutter barrel from the contact upper portion, and forms a downward pressing auxiliary force.

8. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 7, characterized in that: When the lever is in a horizontal or vertical state, the second clamping portion acts on the end of the shield cutter barrel from the upper and lower parts simultaneously, and the clamping force is a centripetal force.

9. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1, characterized in that: Sliding grooves are respectively provided on the left clamping arm and the right clamping arm, and 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 opens 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.

10. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 9, characterized in that: A waist-shaped hole inclined inward from top to bottom is respectively provided on the left clamping arm and the right clamping arm, 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 clamping arm and the right clamping arm away from each other to adjust the clamping force formed by the left clamping ear and the right clamping ear.

11. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 10, 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 left mounting shafts, 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 right mounting shafts, 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.

12. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 11, characterized in that: An aligned left waist-shaped hole group is formed on the two left clamping arms, and an aligned right waist-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 pass through 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.

13. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1, characterized in that: The left clamping arm and the right clamping arm are symmetrically clamped on both sides of the end of the shield cutter barrel with respect to the center of the shield cutter barrel.

14. The shield cutter drum turning machine based on lever dynamic balance adjustment according to claim 1, characterized in that: The telescopic direction of the telescopic cylinder is parallel to the extending direction of the pivot.

15. The shield cutter drum turning machine based on lever dynamic balance adjustment according to any one of claims 1 to 14, 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 rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation 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, and 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.

16. A shield cutter drum flipping process based on dynamic balance adjustment of lever, characterized in that: The process adopts the shield cutter drum turning machine based on lever dynamic balance adjustment according to any one of claims 1 to 15, and comprises the following steps: S1. Shield Cutter Installation Adjust the lever to a 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, and the power cylinder is obliquely supported between the front end of the lever and the rear end of the flip seat, wherein the lever is in a dynamically balanced state, the power cylinder has a rear connecting end and a front connecting end, and the rotation fulcrum is located between the rear connecting end and the front connecting end, and the rotation fulcrum, the front connecting end, and the rear connecting end are arranged in order from top to bottom; S2, shield cutter drum flip Based on the downward and leftward power contraction provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the right, and the clamping component forms a clamping resistance and an upward supporting auxiliary force, while keeping the lever in a dynamic balance state and flipping with the contraction of the power cylinder until the direction of the upward supporting auxiliary force changes to a centripetal clamping force, and the lever is in a vertical dynamic balance state, wherein 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, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from left to right, and the rear connecting end, the front connecting end, and the rotation fulcrum are arranged in sequence from bottom to top; At the same time, when the lever is reset to a horizontal state around the rotation fulcrum, based on the upward and rightward power extension provided by the power cylinder, the lever rotates around the rotation fulcrum and flips to the left, and the clamping parts form clamping resistance and downward auxiliary force, while keeping the lever in a dynamic balance state and flipping with the extension of the power cylinder until the direction of the downward auxiliary force changes to a centripetal clamping force, and the lever is in a horizontal dynamic balance state.

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