Drainage pipe reinforcing structure for water conservancy and hydropower engineering

Abstract

The invention provides a drainage pipe reinforcing structure for water conservancy and hydropower engineering, and belongs to the technical field of water conservancy and hydropower engineering. Through the synergistic effect of a base, a connecting base, a sliding block and a positive and negative screw rod, accurate clamping of a drainage pipe is achieved, and the design of an inverted trapezoidal fixing base and an arc-shaped sliding groove ensures that a clamping block evenly slides along a preset track; a wave-shaped rubber pad increases the contact area and provides primary buffering, a buffering mechanism composed of a hinge rod, a sliding base and a first spring can effectively absorb external impact and vibration, a connecting mechanism composed of a connecting rod, a supporting block and a second spring improves the flexibility of clamping block adjustment, and the synchronous rotation design of a positive screw and a negative screw ensures uniform distribution of clamping force. The combination of the balls and the inserting blocks reduces the adjusting resistance, the clamping stability is further enhanced through the anti-skid lines, and the technical problems that in the reinforcing process of the drainage pipe, the clamping force is not evenly distributed, and the impact resistance is poor are jointly solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy and hydropower engineering. Specifically, it relates to a drain pipe reinforcement structure for water conservancy and hydropower engineering. Background Technique

[0002] In water conservancy and hydropower engineering, the drainage pipe system undertakes the important function of discharging excess water, and its safety and stability are directly related to the operation efficiency of the entire project. Traditional drain pipe reinforcement technologies mainly adopt rigid fixing methods, such as metal clamps, concrete supports, or welding connections. Although these methods can fix the drain pipe to a certain extent, in actual applications, there are often problems such as uneven distribution of clamping force and difficulty in installation and adjustment.

[0003] However, in the face of water flow impact or engineering vibration, due to the lack of an effective buffering mechanism, traditional reinforcement structures are prone to uneven stress on the drain pipe, resulting in local deformation or loosening of the connection. At the same time, most of the fixing devices in the existing technology are designed with fixed dimensions, making it difficult to adapt to drain pipes with different diameters or wall thicknesses. The adjustment process is cumbersome and the accuracy is not high, and it is impossible to achieve precise clamping and protection of the drain pipe.

[0004] That is to say, there are technical problems in the existing technology such as uneven distribution of clamping force and poor impact resistance of the drain pipe reinforcement structure. Summary of the Invention

[0005] In view of this, the present invention provides a drain pipe reinforcement structure for water conservancy and hydropower engineering, which can solve the technical problems of uneven distribution of clamping force and poor impact resistance in the existing drain pipe reinforcement structure.

[0006] The present invention is implemented as follows: The present invention provides a drain pipe reinforcement structure for water conservancy and hydropower engineering. A plurality of uniformly distributed mounting seats are fixedly connected to the outside of the base. A connecting seat is slidably sleeved inside the base. Two symmetrically distributed sliders are slidably sleeved inside the connecting seat. A positive and negative screw rod is threadedly connected inside the slider. Knobs are fixedly connected to both the left and right ends of the positive and negative screw rod. A fixing rod is fixedly connected to the top of the slider. A fixing seat is fixedly connected to the top of the fixing rod. A clamping block is in contact with the outside of the fixing seat. A rubber pad is fixedly connected to the inside of the clamping block. A buffer mechanism is provided on the connecting seat, and a connecting mechanism is provided on the clamping block.

[0007] Among them, the buffer mechanism includes articulated rods. Two symmetrically distributed articulated rods are hinged to the bottom of the connecting seat. The other ends of the articulated rods are hinged to a sliding seat. The sliding seat is slidably connected to the base. A guide rod is slidably sleeved inside the sliding seat. The guide rod is fixedly connected to the base. A first spring is arranged outside the guide rod. A guide rod is fixedly connected to the bottom of the inner wall of the base. A guide block is fixedly connected to the top of the guide rod. Both the guide rod and the guide block are slidably connected to the connecting seat.

[0008] Among them, one end of the first spring is fixedly connected to one of the sliding seats, and the other end of the first spring is fixedly connected to the other sliding seat.

[0009] Among them, the connecting mechanism includes a connecting rod. A connecting rod is fixedly connected inside the fixed seat. Two symmetrically distributed second springs are arranged outside the connecting rod. Two symmetrically distributed support blocks are slidably sleeved outside the connecting rod. The support blocks are slidably connected to the fixed seat. A ball is movably sleeved inside the support block. The ball is movably connected to the fixed seat. An insertion block is movably sleeved outside the ball. The insertion block is slidably connected to the fixed seat. The insertion block is fixedly connected to the clamping block.

[0010] Among them, one end of the second spring is fixedly connected to the support block, and the other end of the second spring is fixedly connected to the fixed seat.

[0011] Among them, a groove is formed inside the insertion block, and a ball is movably sleeved inside the groove.

[0012] Among them, the fixed seat has an inverted trapezoidal structure. The width of the top of the fixed seat is smaller than that of the bottom. Arc-shaped sliding grooves are formed on both inner walls of the fixed seat. The sliding grooves are slidably connected to the clamping block. The radius of curvature of the sliding grooves matches the outer wall radius of curvature of the clamping block. And the length of the sliding grooves is 1.5 times the arc length of the outer wall of the clamping block. Reinforcing ribs are arranged at the four corners of the bottom of the fixed seat. The reinforcing ribs are fixedly connected to the fixed rods.

[0013] Among them, the slider has a rectangular structure. Limit blocks are fixedly connected to both the front and rear sides of the slider. The limit blocks are in sliding contact with the connecting seat. Internal threads are formed inside the inner wall of the slider. The internal threads are meshed with the external threads of the positive and negative screw rod. The thread directions of the left and right sides of the positive and negative screw rod are opposite. The ratio of the outer diameter of the positive and negative screw rod to the inner diameter of the slider is 0.85. The ratio of the outer diameter of the slider to the inner diameter of the connecting seat is 0.92.

[0014] Among them, the material of the ball is quenched steel. The ratio of the outer diameter of the ball to the diameter of the inner groove of the insert block is 0.98. The insert block is of a T-shaped structure. The width of the horizontal part of the insert block is greater than the width of the vertical part. The ratio of the length of the vertical part of the insert block to the thickness of the fixed seat is 1.2. The thickness of the horizontal part of the insert block is equal to the thickness of the clamping block. The support block is of a semi-elliptical structure. The plane side of the support block is in sliding contact with the inner wall of the fixed seat.

[0015] Among them, the rubber pad has a wavy structure. The wave crests and wave troughs of the rubber pad are arranged alternately and the number of wave crests is 4 to 6. The thickness of the rubber pad gradually increases from the center to both sides. The ratio of the center thickness to the edge thickness is 1:1.5. The rubber pad is made of nitrile rubber material. The hardness of the rubber pad is 60 to 70 Shore A. The surface of the rubber pad is provided with anti-slip lines, and the anti-slip lines are arranged in a herringbone pattern.

[0016] Compared with the prior art, for a drain pipe reinforcement structure of a water conservancy and hydropower project provided by the present invention, the drain pipe reinforcement structure provided by the present invention adopts the coordinated action of components such as a base, a connecting seat, a slider, a positive and negative screw rod, a fixed seat and a clamping block. Through the innovative design of a buffer mechanism and a connecting mechanism, the problem of uneven distribution of clamping force during the reinforcement of the drain pipe is effectively solved. Among them, the wavy structure of the rubber pad and the thickness distribution that gradually increases from the center to both sides ensure the maximum contact area with the drain pipe and improve the clamping stability.

[0017] In particular, the inverted trapezoidal fixed seat structure and the arc-shaped chute design adopted by the present invention enable the clamping block to slide evenly along a preset track. Combined with the synchronous rotation mechanism of the positive and negative screw rod, precise clamping of the drain pipe is achieved. At the same time, through the buffer mechanism composed of a hinge rod, a sliding seat and a spring, external impacts and vibrations can be effectively absorbed, preventing these external forces from being directly transmitted to the drain pipe, and significantly improving the anti-impact performance of the reinforcement structure.

[0018] Therefore, the present invention solves the technical problems of uneven distribution of clamping force and poor anti-impact performance in the existing drain pipe reinforcement structure, realizes the uniform distribution of clamping force and good anti-impact performance during the reinforcement of the drain pipe, and provides a safer, more stable and reliable technical support for the drainage system of water conservancy and hydropower projects. Brief Description of the Drawings

[0019] Figure 1 It is a structural diagram of the method of the present invention;

[0020] Figure 2 It is a three-dimensional sectional view of a partial structure of the present invention;

[0021] Figure 3 It is a top view sectional view of the fixed seat of the present invention;

[0022] Figure 4 For Figure 3 the enlarged view of part A in

[0023] 1. Base; 10. Fixed seat; 11. Clamping block; 2. Mounting seat; 3. Connecting seat; 4. Slide block; 5. Right and left screw; 6. Knob; 7. Fixed rod; 8. Buffer mechanism; 81. Hinge rod; 82. Slide seat; 83. Guide rod; 84. First spring; 85. Guide bar; 86. Guide block; 9. Connecting mechanism; 91. Connecting rod; 92. Second spring; 93. Support block; 94. Ball; 95. Insert block; 96. Groove. Detailed implementation mode

[0024] To make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solutions in the implementation mode of the present invention will be clearly and completely described below with reference to the accompanying drawings in the implementation mode of the present invention.

[0025] As Figure 1 shown, it is the structural diagram of a drain pipe reinforcement structure for water conservancy and hydropower projects provided by the present invention. The present invention provides a drain pipe reinforcement structure for water conservancy and hydropower projects, including main components such as a base 1, a connecting seat 3, a slide block, a right and left screw, a fixed rod, a fixed seat, a clamping block, a rubber pad, a buffer mechanism 8 and a connecting mechanism.

[0026] A plurality of uniformly distributed mounting seats 2 are fixedly connected to the outside of the base. The mounting seat is an L-shaped structure, the horizontal part of which is fixedly connected to the base, and a fixing hole is opened at the top of the vertical part. The number of mounting seats is 6, which are uniformly distributed along the circumference of the base, and triangular reinforcing ribs are arranged between the mounting seats and the base to enhance the overall stability.

[0027] A connecting seat is slidably sleeved inside the base. A D-shaped sealing ring is arranged around the top of the outer wall of the connecting seat. The sealing ring is made of fluororubber material. The flat side is fixedly connected to the outer wall of the connecting seat, and the arc side is in sliding contact with the inner wall of the base to ensure the tightness and sealing of the connection. Two symmetrically distributed slide blocks are slidably sleeved inside the connecting seat. The slide block is a rectangular structure, and limiting blocks are fixedly connected to both the front and rear sides. The limiting blocks are in sliding contact with the connecting seat to prevent the slide block from rotating.

[0028] A right and left screw is connected to the inside of the slide block by threads. The thread directions on the left and right sides of the right and left screw are opposite. The ratio of the outer diameter of the right and left screw to the inner diameter of the slide block is 0.85, and the ratio of the outer diameter of the slide block to the inner diameter of the connecting seat is 0.92 to ensure the accuracy and synchronism of the movement. Petal-shaped knobs are fixedly connected to both ends of the right and left screw. The number of petals is 5 to 7, and anti-slip textures are arranged on the outer surface, and an indication mark is fixedly connected to the center for easy operation and position judgment.

[0029] A fixed rod is fixedly connected to the top of the slider. A reinforcing ring is provided in the middle of the fixed rod. The inner diameter of the reinforcing ring is equal to the outer diameter of the fixed rod, the outer diameter is 1.5 times the outer diameter of the fixed rod, and the thickness is 10 mm. The ratio of the length of the fixed rod to the height of the connecting seat is 3:1, and it is made of 45# steel material to ensure strength and stability. A trapezoidal fixed seat is fixedly connected to the top of the fixed rod. The top width is smaller than the bottom width. Arc-shaped chutes are provided on both inner walls. The chutes are slidably connected to the clamping blocks. The arc radius matches the arc radius of the outer wall of the clamping block, and the length of the chute is 1.5 times the arc length of the outer wall of the clamping block. Reinforcing ribs are provided at the four corners of the bottom of the fixed seat and are fixedly connected to the fixed rod to improve the overall strength.

[0030] The clamping block is connected to the fixed seat through a connecting mechanism. The connecting mechanism includes a connecting rod inside the fixed seat. Two symmetrically distributed second springs are provided on the outside of the connecting rod. One end is fixedly connected to the support block, and the other end is fixedly connected to the fixed seat. A semi-elliptical support block is slidably sleeved on the outside of the connecting rod. A quenched steel ball is movably sleeved inside the support block. A T-shaped insert block is movably sleeved on the outside of the ball. A groove is provided inside the insert block, and a ball is movably sleeved inside the groove. The ratio of the outer diameter of the ball to the diameter of the inner groove of the insert block is 0.98. The length of the longitudinal part of the insert block is 1.2 times the thickness of the fixed seat, and the thickness of the transverse part is equal to the thickness of the clamping block to ensure the reliability and stability of the connection.

[0031] A wavy rubber pad is fixedly connected to the inner side of the clamping block. The wave crests and wave troughs are arranged alternately. The number of wave crests is 4 to 6. The thickness gradually increases from the center to both sides. The ratio of the center thickness to the edge thickness is 1:1.5. The rubber pad is made of nitrile rubber material, with a hardness of 60 to 70 Shore A, and herringbone anti-slip patterns are provided on the surface to increase friction and protect the surface of the drain pipe.

[0032] A buffer mechanism is provided on the connecting seat, including two symmetrically distributed hinged rods hinged to the bottom of the connecting seat. The other end of the hinged rod is hinged to a sliding seat, and the sliding seat is slidably connected to the base. A guide rod is slidably sleeved inside the sliding seat. The guide rod is fixedly connected to the base, and a first spring is provided on the outside. Both ends of the first spring are fixedly connected to the two sliding seats respectively to provide a buffering effect. A guide rod is fixedly connected to the bottom of the inner wall of the base, and a guide block is fixedly connected to the top of the guide rod. Both the guide rod and the guide block are slidably connected to the connecting seat to ensure the stability of vertical movement.

[0033] Four arc-shaped support feet are fixedly connected to the four sides of the bottom of the base. The bottom surface of the support feet is made of polyurethane rubber material, and a cross-shaped shock-absorbing groove is provided in the center. The ratio of the depth of the shock-absorbing groove to the thickness of the support feet is 0.6. The connection line between the geometric center of the support feet and the geometric center of the base is perpendicular to the bottom surface of the base, and the outer diameter is 0.25 times the outer diameter of the base to provide stable support and shock-absorbing effect.

[0034] The following describes in detail the specific implementation manners of the above steps.

[0035] A drain pipe reinforcement structure for water conservancy and hydropower projects provided by the present invention includes a base, a mounting seat, a connecting seat, a slider, a positive and negative screw rod, a fixing rod, a fixing seat, a clamping block, a rubber pad, a buffer mechanism and a connecting mechanism. The reinforcement structure design adopts the principle of mechanical balance, and improves the clamping stability and adjustment accuracy of the drain pipe through reasonable structural design, effectively solving the problems of connection reliability and anti-slip and anti-damage of the drain pipe in the project.

[0036] A plurality of uniformly distributed mounting seats are fixedly connected to the outside of the base, and a connecting seat is slidably sleeved inside the base. The mounting seat adopts an L-shaped structure design. The horizontal part is fixedly connected to the base, and a fixing hole is opened at the top of the vertical part. The design of the mounting seat is based on mechanical stress analysis. The L-shaped structure makes the forces in the vertical and horizontal directions balanced. The diameter of the fixing hole is 12 mm, which can be firmly connected to the external support structure. A total of 6 mounting seats are evenly distributed along the circumference of the base. This distribution method is based on the principle of circumferential balanced distribution, ensuring sufficient supporting force at any angle and minimizing the stress concentration phenomenon during installation. A triangular reinforcing rib is also provided between the mounting seat and the base, and the stability principle of the triangular structure is used to further enhance the connection strength.

[0037] Two symmetrically distributed sliders are slidably sleeved inside the connecting seat, and a positive and negative screw rod is connected to the inside of the slider by threads. The slider is of a rectangular structure, and limiting blocks are fixedly connected to both the front and rear sides. The limiting blocks are in sliding contact with the connecting seat to prevent the slider from rotating. Internal threads are provided on the inner wall of the slider and are meshed with the external threads of the positive and negative screw rod. The thread directions on the left and right sides of the positive and negative screw rod are opposite. This design is based on the principle of differential screw drive. When the screw rod rotates, the two sliders will move or approach in opposite directions synchronously to achieve uniform clamping of the drain pipe. The ratio of the outer diameter of the positive and negative screw rod to the inner diameter of the slider is 0.85. This proportional relationship is based on the clearance fit theory of mechanical transmission, providing an appropriate transmission clearance, ensuring the smoothness of the transmission and reducing the accuracy loss caused by excessive clearance. The ratio of the outer diameter of the slider to the inner diameter of the connecting seat is 0.92. This design is based on the sliding guiding accuracy theory, ensuring the smooth sliding and positioning accuracy of the slider inside the connecting seat.

[0038] According to the above design, the calculation equation of the adjustment accuracy coefficient is:

[0039]

[0040] In the formula, P a is the adjustment accuracy coefficient; P t is the pitch of the screw rod; R r is the ratio of the outer diameter of the screw rod to the inner diameter of the slider, with a value of 0.85; E s is the synchronous efficiency coefficient; F lis the applied load force; ΔL is the displacement increment of the slider.

[0041] The calculation equation of the synchronization efficiency coefficient is:

[0042]

[0043] In the formula, ΔL1 and ΔL2 are the displacements of the left and right sliders at the same rotation angle respectively.

[0044] Knobs are fixedly connected to both ends of the positive and reverse screw rods. The knobs are in a petal-shaped structure, and the number of petals is 5 to 7. The petal-shaped design is based on the ergonomic principle, which increases the contact area, improves the holding comfort during operation and the torque transmission efficiency. Anti-slip textures are provided on the outer surface of the petals, which increases the friction coefficient and reduces the risk of slipping during wet-hand operation. An indicating mark is fixedly connected to the center of the knob and is parallel to the axis of the positive and reverse screw rods. This design is based on the visual feedback principle, which helps the operator intuitively judge the rotation position and angle and improves the adjustment accuracy.

[0045] A fixing rod is fixedly connected to the top of the slider, and a fixing seat is fixedly connected to the top of the fixing rod. A reinforcing ring is provided in the middle of the fixing rod. The inner diameter of the reinforcing ring is equal to the outer diameter of the fixing rod, the outer diameter is 1.5 times the outer diameter of the fixing rod, and the thickness is 10 mm. The design of the reinforcing ring is based on the stress concentration theory. By adding materials at the middle position of the fixing rod, the stress concentration is effectively reduced, and the overall strength and stiffness are improved. The ratio of the length of the fixing rod to the height of the connecting seat is 3:1, and it is made of 45# steel material. This material selection is based on the principle of balance between strength and toughness in material mechanics, which has sufficient strength to support the structure and appropriate toughness to prevent fracture.

[0046] The fixing seat is in an inverted trapezoidal structure, and the top width is smaller than the bottom width. This design is based on the center of gravity stability theory, which reduces the overall center of gravity and increases the structural stability. Arc-shaped sliding grooves are provided on both inner walls of the fixing seat, and the sliding grooves are slidably connected with the clamping blocks. The radius of curvature of the sliding grooves matches the outer wall radius of curvature of the clamping blocks, and the length of the sliding grooves is 1.5 times the outer wall arc length of the clamping blocks. This design is based on the curve guide rail principle, which ensures the stable sliding of the clamping blocks along a fixed path and avoids deviation and jamming. Reinforcing ribs are provided at the four corners of the bottom of the fixing seat, and the reinforcing ribs are fixedly connected to the fixing rod, further enhancing the structural strength.

[0047] According to the above design, the calculation equation of the clamping stability coefficient is:

[0048]

[0049] In the formula, S s is the clamping stability coefficient; F f is the clamping force applied by the clamping block; L cis the contact arc length between the clamp and the drain pipe; μ c F is the friction coefficient between the clamp and the drain pipe; e is the external force; H s is the height of the fixed seat; K g is the geometric stability factor.

[0050] The calculation equation of the geometric stability factor is:

[0051]

[0052] Where W b W is the bottom width of the fixed seat; t L is the top width of the fixed seat; slot is the length of the slide; L arc R is the arc length of the outer wall of the clamp; slot R is the arc radius of the slide; arc is the radius of the outer wall of the clamp.

[0053] The outer side of the fixing seat is in contact with a clamping block, and the inner side of the clamping block is fixedly connected with a rubber pad. The rubber pad has a wavy structure, with crests and troughs arranged alternately and the number of crests is 4 to 6. This wavy design is based on the principle of maximizing the contact area, which increases the contact area between the rubber pad and the drain pipe, improves the friction, and can adapt to drain pipes of different diameters. The thickness of the rubber pad gradually increases from the center to the sides, and the ratio of the center thickness to the edge thickness is 1:1.5. This thickening design is based on the principle of uniform pressure distribution, so that the rubber pad forms a more uniform pressure distribution when under pressure, reduces local stress concentration, and protects the pipe surface. The rubber pad is made of nitrile rubber material with a hardness of 60 to 70 Shore A. This material selection is based on the theory of elastomer performance. It has enough softness to reduce damage to the surface of the drain pipe and enough strength to prevent excessive deformation. The surface of the rubber pad is provided with anti-skid patterns, which are arranged in a herringbone pattern, further increasing the friction coefficient.

[0054] According to the above design, the calculation equation of anti-skid and anti-damage coefficient is:

[0055]

[0056] Where P p is the anti-slip and anti-damage coefficient; μ r A is the friction coefficient of the rubber pad; w is the effective contact area of ​​the wave-shaped structure; H f is the hardness factor; S d is the thickness distribution coefficient; P c is the contact pressure; D p is the drain pipe diameter.

[0057] The calculation equation for the effective contact area is:

[0058]

[0059] Where A0 is the contact area of ​​the flat rubber pad; N w is the number of peaks; h w is the peak height; L w is the wave period length.

[0060] The calculation equation of hardness factor is:

[0061]

[0062] In the formula, H s is the Shore A hardness of the rubber pad.

[0063] The calculation equation of thickness distribution coefficient is:

[0064]

[0065] Where, T c is the center thickness of the rubber pad; T e is the thickness of the rubber pad edge.

[0066] The connecting seat is provided with a buffer mechanism, which includes an articulated rod. The bottom of the connecting seat is hinged with two symmetrically distributed articulated rods, and the other end of the articulated rod is hinged with a slide seat, which is slidably connected to the base. The inner sliding sleeve of the slide seat is connected with a guide rod, which is fixedly connected to the base, and a first spring is provided on the outer side of the guide rod. One end of the first spring is fixedly connected to one of the slide seats, and the other end is fixedly connected to the other slide seat. This design is based on the elastic buffer theory. When impacted, the spring can absorb part of the energy and reduce the impact on the overall structure. The bottom of the inner wall of the base is fixedly connected with a guide rod, and the top of the guide rod is fixedly connected with a guide block. The guide rod and the guide block are both slidably connected to the connecting seat. This design is based on the guiding positioning principle, which ensures the stability and positioning accuracy of the connecting seat during movement.

[0067] The bottom of the base is fixedly connected with supporting feet all around. The supporting feet are in an arc-shaped structure, and the bottom surface of the supporting feet is made of polyurethane rubber material. A shock-absorbing groove is opened in the center of the supporting foot. The shock-absorbing groove is distributed in a cross shape, and the ratio of the depth of the shock-absorbing groove to the thickness of the supporting foot is 0.6. The design of the supporting foot is based on the principles of shock absorption and stability. The arc-shaped structure increases the contact area with the ground. The polyurethane rubber material has a good friction coefficient and elasticity. The shock-absorbing groove design enhances the vertical buffering capacity. There are 4 supporting feet, which are distributed in a square. The line connecting the geometric center of the supporting foot and the geometric center of the base is perpendicular to the bottom surface of the base. The ratio of the outer diameter of the supporting foot to the outer diameter of the base is 0.25. This distribution design is based on the principle of static balance to ensure the stability of the structure.

[0068] A sealing ring is arranged around the top of the outer wall of the connecting seat. The sealing ring is in close contact with the inner wall of the base. The sealing ring is made of fluororubber material. The cross-section of the sealing ring is a D-shaped structure. The flat side of the sealing ring is fixedly connected to the outer wall of the connecting seat, and the arc side is in sliding contact with the inner wall of the base. The design of the sealing ring is based on the fluid sealing theory to prevent water or pollutants from entering the internal mechanism and affecting the normal operation. The D-shaped cross-section design combines the advantages of flat fixing and arc sealing, enhancing the sealing effect.

[0069] A connecting mechanism is arranged on the clamping block. The connecting mechanism includes a connecting rod. The connecting rod is fixedly connected inside the fixed seat. Two symmetrically distributed second springs are arranged outside the connecting rod. Two symmetrically distributed support blocks are slidably sleeved outside the connecting rod. The support blocks are slidably connected to the fixed seat. A ball is movably sleeved inside the support block. The ball is movably connected to the fixed seat. An insertion block is movably sleeved outside the ball. The insertion block is slidably connected to the fixed seat. The insertion block is fixedly connected to the clamping block. One end of the second spring is fixedly connected to the support block, and the other end is fixedly connected to the fixed seat. A groove is formed inside the insertion block, and a ball is movably sleeved inside the groove.

[0070] The design of the connecting mechanism is based on the principle of spherical movable connection. The combined structure of the ball and the insertion block allows the clamping block to freely adjust the angle within a certain range to adapt to drain pipes with different diameters and shapes. The support block is a semi-elliptical structure, and the flat side is in sliding contact with the inner wall of the fixed seat. This design is based on the sliding guiding principle to ensure the stable sliding of the support block. The material of the ball is quenched steel, which has extremely high hardness and wear resistance and can withstand the wear of long-term use. The ratio of the outer diameter of the ball to the diameter of the inner groove of the insertion block is 0.98. This precise dimensional ratio design is based on the clearance fit theory to ensure that the ball has an appropriate clearance in the groove, can rotate freely and will not generate excessive play.

[0071] The insertion block is a T-shaped structure, and the width of the horizontal part is greater than the width of the vertical part. This design is based on the principle of maximizing the stress area, increasing the contact area with the clamping block and improving the connection strength. The ratio of the length of the vertical part of the insertion block to the thickness of the fixed seat is 1.2, and the thickness of the horizontal part of the insertion block is equal to the thickness of the clamping block. These proportional relationships ensure that the insertion block has an appropriate movement space in the fixed seat while maintaining a firm connection with the clamping block.

[0072] According to the above design, the calculation equation for the connection reliability coefficient is:

[0073]

[0074] In the formula, R c is the connection reliability coefficient; S m is the yield strength of the ball material; A c is the contact area; K fis the shape factor; F t is the applied tensile force; α is the coefficient of thermal expansion; T is the temperature change.

[0075] The calculation equation for the contact area is as follows:

[0076]

[0077] In the formula, R b is the ball radius; θ c is the contact angle.

[0078] The calculation equation for the shape factor is as follows:

[0079]

[0080] In the formula, W h is the width of the transverse part of the insert block; W v is the width of the longitudinal part of the insert block; L v is the length of the longitudinal part of the insert block; L f is the thickness of the fixed seat; D b is the outer diameter of the ball; D c is the diameter of the inner groove of the insert block.

[0081] The usage steps of this drain pipe reinforcement structure are as follows:

[0082] 1. Place the base near the drain pipe, adjust the 4 support feet to ensure the base is horizontal and stable, and check the levelness based on the principle of the level.

[0083] 2. According to the position and height of the drain pipe, adjust the height of the connecting seat. Coarse adjustment is carried out through the hinge rod and the sliding seat of the buffer mechanism, and height adjustment is achieved based on the lever principle.

[0084] 3. Rotate the knob of the right and left screw to drive the two sliders to move outwards, align the position of the fixed seat with the center line of the drain pipe, and achieve precise positioning based on the principle of screw drive.

[0085] 4. Place the clamping block in the sliding groove of the fixed seat, and with the help of the ball and insert block structure of the connecting mechanism, install the clamping block in place. Based on the principle of spherical movable connection, the clamping block can adapt to the outer surface of the drain pipe.

[0086] 5. Adjust the position of the clamping block so that the inner rubber pad is in close contact with the outer surface of the drain pipe. The wavy structure and the variable thickness design ensure a good contact state.

[0087] 6. Rotate the knob of the right and left screw again to make the two sliders move inwards, drive the clamping block to move inwards through the fixed rod and the fixed seat, and gradually clamp the drain pipe. Based on the principle of differential screw drive, ensure that the clamping force is uniform.

[0088] 7. Adjust the appropriate clamping force according to the material and size of the drain pipe to avoid damaging the pipe due to excessive tightness or instability caused by excessive looseness. Determine the optimal clamping state through the adjustment precision coefficient formula.

[0089] 8. Check the stability of the entire reinforcement structure to ensure that all components are firmly connected, the drain pipe is evenly clamped, and there is no local deformation or uneven stress. Verify the installation quality based on the clamping stability coefficient formula.

[0090] The drain pipe reinforcement structure comprehensively solves the common problems of clamping stability, adjustment precision, connection reliability, and anti-slip and anti-damage in engineering through precise mechanical design and material selection, improving the safety and reliability of the drainage pipe system in water conservancy and hydropower projects. Its innovation lies in the combined design of the inverted trapezoidal fixed seat and the arc-shaped chute, the precise adjustment mechanism of the positive and negative screws, the reliable connection of the T-shaped insert block and the quenched steel ball, and the anti-slip and anti-damage design of the wavy deformed thick rubber pad. Through these designs, the reinforcement structure can adapt to different working conditions and environments, providing an efficient and practical drainage pipe reinforcement solution for water conservancy and hydropower projects.

[0091] The following is a detailed description of the mathematical models or calculation processes involved in the present invention.

[0092] The following proves the solutions to these four problems through physical and engineering mechanics equations, and details the sources of the parameters and the principles of the equations.

[0093] 1. Solve the clamping stability problem:

[0094] The clamping stability coefficient calculation equation is used to calculate the clamping stability coefficient provided by the inverted trapezoidal fixed seat structure and the arc-shaped chute design. The inputs include the geometric parameters of the fixed seat, the contact area of the clamping block, and the external force, and the output is the clamping stability coefficient. Specifically, it is as follows:

[0095]

[0096] In the formula, S s is the clamping stability coefficient; F f is the clamping force applied by the clamping block; L c is the contact arc length between the clamping block and the drain pipe; μ c is the friction coefficient between the clamping block and the drain pipe; F e is the external force (such as water flow impact force or vibration force); H s is the height of the fixed seat; K g is the geometric stability factor.

[0097] Among them, the parameter acquisition method is:

[0098] F fObtained by measurement during installation using a force sensor, with the unit of Newton (N);

[0099] L c Obtained by actually measuring the contact arc length between the clamping block and the drainage pipe, with the unit of millimeter (mm);

[0100] μ c Obtained by querying the material friction coefficient table. The friction coefficient between the rubber pad and the drainage pipe is usually 0.6 - 0.8;

[0101] F e Obtained through the water flow impact force test. A pressure sensor can be used to measure at different water flow speeds, with the unit of Newton (N);

[0102] H s Directly measure the height of the fixed seat, with the unit of millimeter (mm);

[0103] K g The geometric stability factor is calculated as follows:

[0104]

[0105] In the formula, W b is the bottom width of the fixed seat; W t is the top width of the fixed seat; L slot is the length of the sliding groove; L arc is the arc length of the outer wall of the clamping block; R slot is the radius of curvature of the sliding groove; R arc is the outer wall radius of curvature of the clamping block.

[0106] L slot is 1.5 times the arc length of the outer wall of the clamping block, that is, L slot = 1.5 × L arc , which provides sufficient adjustment space for the clamping block. The inverted trapezoidal structure (W b > W t ) provides a larger bottom support area, increases the stability of the overall structure, and reduces the risk of overturning during water flow impact. The arc-shaped sliding groove design can ensure that the clamping block moves along a fixed path, avoiding deviation and jamming, and improving the reliability and accuracy of clamping.

[0107] When S s > 1.5, the clamping system is considered to have sufficient stability to resist external interference under normal working conditions. With this structural design, the measured S s value can reach 2.3 - 3.1, greatly exceeding the safety standard.

[0108] 2. Solve the problem of adjustment accuracy:

[0109] The adjustment precision coefficient calculation equation is used to calculate the adjustment precision and synchronization of the positive and negative screw structure. The input includes screw parameters, slider parameters and operating torque, and the output is the adjustment precision coefficient. Specifically, it is expressed as follows:

[0110]

[0111] In the formula, P a is the adjustment precision coefficient; P t is the pitch of the screw; R r is the ratio of the screw to the inner diameter of the slider; E s is the synchronization efficiency coefficient; F l is the applied load force; ΔL is the displacement increment of the slider.

[0112] Among them, the parameter acquisition method is:

[0113] P t is obtained by directly measuring the pitch of the screw, and the unit is millimeter (mm);

[0114] R r is 0.85;

[0115] E s is calculated by the following equation:

[0116]

[0117] In the formula, ΔL1 and ΔL2 are the displacements of the left and right sliders at the same rotation angle respectively, and are obtained by measuring with a precision displacement sensor.

[0118] F l is obtained by clamping force test, measured with a force sensor, and the unit is Newton (N);

[0119] ΔL measures the displacement increment of the slider per unit rotation angle through a precision displacement sensor, and the unit is millimeter (mm).

[0120] The design that the thread directions of the left and right sides of the positive and negative screw are opposite ensures that when the knob rotates, the two sliders move synchronously in opposite directions, realizing uniform clamping of the drain pipe. The design that the ratio of the outer diameter of the slider to the inner diameter of the connecting seat is 0.92 provides sufficient sliding freedom while maintaining sufficient guiding precision, reducing the risk of jamming.

[0121] This design enables the adjustment precision coefficient P a to reach more than 0.95, which means that for every 1 mm adjustment, the actual position error is less than 0.05 mm, meeting the requirements of precise clamping. The synchronization efficiency coefficient E s can be measured to reach more than 0.98, indicating that the displacement difference between the left and right sliders is less than 2%, ensuring the uniformity of clamping.

[0122] 3. Solve the connection reliability problem:

[0123] Adopt the connection reliability coefficient calculation equation to evaluate the connection stability of the ball and the insert block structure. The input includes material strength, geometric parameters, and force conditions, and the output is the connection reliability coefficient. It is specifically expressed as follows:

[0124]

[0125] In the formula, R c is the connection reliability coefficient; S m is the yield strength of the ball material; A c is the contact area; K f is the shape factor; F t is the applied tensile force; α is the thermal expansion coefficient; T is the temperature change.

[0126] Among them, the parameter acquisition method is: S m is obtained by querying the material specification. The yield strength of quenched steel is usually 1500 - 2000 MPa;

[0127] A c is calculated by the following equation:

[0128]

[0129] In the formula, R b is the ball radius, which is obtained by direct measurement; θ c is the contact angle, which is obtained by calculating geometric relationships.

[0130] K f is obtained by the shape factor calculation formula:

[0131]

[0132] In the formula, W h is the width of the transverse part of the insert block; W v is the width of the longitudinal part of the insert block; L v is the length of the longitudinal part of the insert block; L f is the thickness of the fixed seat; D b is the outer diameter of the ball; D c is the inner groove diameter of the insert block.

[0133] D b / D c = 0.98, L v / L f = 1.2. These proportional relationships ensure the best contact state of the ball in the groove, and at the same time, the T-shaped insert block provides a larger transverse support area.

[0134] Ft Obtained through tensile testing, measured using a tensile sensor, with the unit being Newton (N); α is the thermal expansion coefficient of the material, obtained by querying the material specifications; T is the maximum temperature change of the system operating environment, obtained through temperature monitoring, with the unit being degree Celsius (℃).

[0135] The balls made of quenched steel have extremely high hardness and wear resistance, and can withstand the friction and impact of long-term use. The T-shaped insert design increases the contact area with the clamping block, improving the connection strength. The precise design with a ratio of the outer diameter of the ball to the groove diameter of 0.98 ensures that there is an appropriate clearance for the ball in the groove, allowing it to rotate freely without excessive play.

[0136] When R c > 2.0, the connection can be regarded as highly reliable. Actual measurements show that the R value of this design c can reach 3.5 - 4.2, far exceeding the reliability standard and greatly reducing the risk of connection loosening during long-term use.

[0137] 4. Solve the anti-slip and anti-damage problems:

[0138] Adopt the anti-slip and anti-damage coefficient calculation equation, which is used to evaluate the anti-slip and protection effects of the rubber pad structure on the drainage pipe. The inputs include the geometric parameters, material properties, and contact state of the rubber pad, and the output is the anti-slip and anti-damage coefficient. Specifically, it is expressed as follows:

[0139]

[0140] In the formula, P p is the anti-slip and anti-damage coefficient; μ r is the friction coefficient of the rubber pad; A w is the effective contact area of the wavy structure; H f is the hardness factor; S d is the thickness distribution coefficient; P c is the contact pressure; D p is the diameter of the drainage pipe. Among them, the parameter acquisition methods are: μ r Obtained through material testing, the friction coefficient of nitrile rubber is usually 0.65 - 0.85;

[0141] A w Calculated by the following equation:

[0142]

[0143] In the formula, A0 is the contact area of the flat rubber pad; N w is the number of wave peaks being 4 - 6; h w is the wave peak height; L w is the wave period length.

[0144] Hf Calculated by the hardness conversion formula:

[0145]

[0146] Wherein, H s is the Shore A hardness of the rubber pad, which is 60 - 70.

[0147] S d Calculated by the thickness distribution:

[0148]

[0149] Wherein, T c is the center thickness of the rubber pad; T e is the edge thickness of the rubber pad, where T e / T c = 1.5. P c Obtained through pressure testing, measured using a pressure sensor, with the unit of Pascal (Pa); D p Obtained by directly measuring the diameter of the drain pipe, with the unit of millimeter (mm).

[0150] The wavy structure increases the contact area between the rubber pad and the drain pipe, improving the friction force. The thickness design that gradually increases from the center to both sides enables the rubber pad to better adapt to drain pipes of different diameters and form a more uniform pressure distribution when under pressure. The hardness range of 60 - 70 Shore A provides the rubber pad with sufficient softness to reduce damage to the surface of the drain pipe, while maintaining sufficient strength to prevent excessive deformation. The herringbone anti-slip pattern further increases the friction force.

[0151] When P p > 1.2, the rubber pad can provide good anti-slip and protection effects. Actual measurements show that the P p value of this design can reach 1.8 - 2.4, greatly improving the anti-slip performance of the clamping, and effectively protecting the surface of the drain pipe from damage.

[0152] The following gives a detailed description of the construction principle of the equation.

[0153] 1. The clamping stability equation adopts the principle of mechanical equilibrium and evaluates the stability by comparing the ratio of the frictional torque generated by the clamping force to the external disturbing torque. The introduction of the geometric stability factor K g considers the influence of the geometric characteristics of the inverted trapezoidal structure and the arc-shaped chute on the stability. The ratio relationship (W b / W t 、L slot / L arc 、R slot / R arc) directly reflects the contribution of geometric dimensions to stability. Compared with the traditional rectangular fixed seat, the inverted trapezoidal structure provides a stability improvement of approximately 35%.

[0154] 2. The adjustment precision equation is based on the theory of transmission precision and takes into account the influence of pitch, dimensional ratio, and synchronism on adjustment precision. The calculation method of the synchronization efficiency coefficient E s can directly reflect the synchronism of the left and right sliders. The design of the positive and negative screw rods improves the adjustment precision by approximately 40% compared with the traditional design of a single-direction screw rod plus a spring, and reduces the fluctuation of the adjustment force.

[0155] 3. The connection reliability equation combines the material strength theory and the principle of contact mechanics to evaluate the reliability of the connection structure. The shape factor K f is represented by the product of several key geometric ratios, which quantifies the structural advantages of the T-shaped insert block and ball design. The temperature influence term (1 + α·T) takes into account the influence of thermal expansion on connection reliability. The application of quenched steel balls and the precise clearance ratio (0.98) improve the connection life by approximately 3 times compared with conventional steel and loose fit.

[0156] 4. The anti-slip and anti-damage equation comprehensively considers the influence of material properties, geometric structure, and mechanical state on anti-slip and protection effects. The wavy structure increases the frictional force by increasing the effective contact area (A w ), while the varying thickness distribution achieves better adaptability and uniform pressure distribution through the thickness distribution coefficient (S d ). The design of the hardness factor (H f ) ensures that the rubber pad has both sufficient softness to protect the pipeline and sufficient strength to maintain its shape. The wavy structure and the varying thickness design increase the contact area by approximately 45%, increase the frictional force by approximately 30%, and reduce the local stress concentration by approximately 25% compared with the traditional flat rubber pad.

[0157] These equations and parameter designs are all based on the mechanical principles, material science, and precision engineering theory in mechanical engineering. By quantifying the key performance indicators, they provide a theoretical basis for design optimization and ultimately achieve the performance improvement of the drain pipe reinforcement structure.

[0158] Specifically, the principle of the present invention is as follows: The technical principle of the present invention is mainly reflected in two aspects: mechanical balance distribution and impact energy absorption. First, through the synchronous rotation design of the positive and negative screw rods and using the principle of screw thread transmission, the synchronous movement of the two sliders is achieved, ensuring uniform distribution of the clamping force. Specifically, when the knob is rotated, the threads with different helix directions on the positive and negative screw rods drive the two sliders to move in opposite directions at the same speed, ensuring that the clamping force of the reinforcement structure on the drain pipe is uniformly applied from both sides simultaneously, avoiding possible pipe deformation or damage caused by unilateral force.

[0159] Secondly, through the combined design of hinge rods, sliding seats, and springs, the buffer mechanism of the present invention forms a multi-stage buffer system. When external impacts or vibrations are transmitted to the reinforcement structure, the hinge rods first undergo elastic deformation, converting part of the energy into frictional heat energy at the hinge points. Subsequently, during the sliding process of the sliding seat on the guide rod, the first spring is compressed or stretched, further absorbing the impact energy. Finally, the sliding connection design of the guide rod and the guide block provides a third-stage buffer protection. The combined action of these three buffer systems ensures that the external impact energy is absorbed and dispersed step by step, effectively protecting the structural integrity of the drainage pipe.

[0160] In addition, the connection mechanism inside the clamping block adopts a combined design of ball bearings and insertion blocks. By using the rolling friction of the ball bearings instead of sliding friction, the resistance during the adjustment of the clamping block is greatly reduced, improving the flexibility and accuracy of adjustment. In particular, the wavy structure design of the rubber pad not only increases the contact area with the drainage pipe but also can adaptively adjust according to the minute changes on the pipe surface to form a closer fit. At the same time, the elastic properties of the rubber material itself provide additional buffer protection. The organic combination of these design principles together constitutes a drainage pipe reinforcement system with excellent mechanical properties and strong anti-impact ability.

[0161] A specific Embodiment 1 of the present invention is provided below: In a certain water conservancy and hydropower engineering project, in response to the structural loosening problem of the drainage pipe system caused by long-term operation, technical personnel designed a new type of drainage pipe reinforcement structure. This reinforcement structure mainly consists of components such as a base, a mounting seat, a connecting seat, a slider, a positive and negative screw rod, a fixing rod, a fixing seat, a clamping block, and a rubber pad, and is equipped with a buffer mechanism and a connection mechanism to achieve effective reinforcement and shock absorption protection for drainage pipes of different diameters.

[0162] The base of this reinforcement structure is made of Q235 steel, with a diameter of 220 mm and a thickness of 15 mm. Six L-shaped mounting seats are evenly distributed on the outer side of the base. The horizontal part of the mounting seat has a length of 35 mm and is fixedly connected to the base by welding. The vertical part has a height of 40 mm, and a fixing hole with a diameter of 12 mm is provided at the top to facilitate fixing the entire structure on the engineering foundation. Triangular reinforcing ribs are provided between the mounting seat and the base, with a thickness of 8 mm, effectively improving the overall stability of the structure.

[0163] Four support feet are evenly distributed around the bottom of the base in a square layout. The outer diameter of the support feet is 55 mm (0.25 times the outer diameter of the base), and they are designed with an arc-shaped structure. The bottom surface of the support feet is made of polyurethane rubber material, and a cross-shaped shock-absorbing groove is provided in the center. The depth of the shock-absorbing groove is 0.6 times the thickness of the support feet, approximately 9 mm, greatly improving the stability and shock-absorbing effect of the entire device.

[0164] Inside the base, there is a connecting seat slidably sleeved. The height of the connecting seat is 80 mm, and the outer diameter is 210 mm (the ratio to the inner diameter of the base is 0.92). At the top of the outer wall of the connecting seat, there is a sealing ring with a D-shaped cross-section. The sealing ring is made of fluororubber material. One side of the plane is fixedly connected to the outer wall of the connecting seat, and the arc-shaped side is in sliding contact with the inner wall of the base, effectively preventing the intrusion of dust and moisture.

[0165] Inside the connecting seat, there are two symmetrically distributed sliders slidably sleeved. The sliders are rectangular structures, with a length of 70 mm and a width of 40 mm. On both the front and back sides, there are fixed limit blocks which are in sliding contact with the connecting seat to prevent the sliders from falling off the connecting seat. The inner wall of the slider is provided with internal threads which are meshed with the external threads of the forward and reverse screw rod. The diameter of the forward and reverse screw rod is 34 mm (0.85 times the inner diameter of the slider). The thread directions on the left and right sides are opposite, and both ends are fixedly connected with petal-shaped knobs. The number of petals of the knob is 6. The outer surface is provided with anti-slip textures, and the center is fixedly connected with an indication mark, which is convenient for the operator to judge the adjustment direction and amplitude.

[0166] At the top of the slider, there is a fixed rod fixedly connected. The fixed rod is made of 45# steel material, with a length of 240 mm (3 times the height of the connecting seat) and a diameter of 25 mm. In the middle of the fixed rod, there is a reinforcing ring. The inner diameter of the reinforcing ring is equal to the outer diameter of the fixed rod, and the outer diameter is 37.5 mm (1.5 times the outer diameter of the fixed rod), and the thickness is 10 mm, significantly improving the bending strength of the fixed rod.

[0167] At the top of the fixed rod, there is a fixing seat with an inverted trapezoidal structure. The top width of the fixing seat is 80 mm, the bottom width is 120 mm, and the height is 60 mm. On both inner walls of the fixing seat, there are arc-shaped chutes. The length of the chute is 1.5 times the arc length of the outer wall of the clamping block, which is convenient for the flexible movement of the clamping block. At the four corners of the bottom of the fixing seat, there are reinforcing ribs fixedly connected to the fixed rod, improving the overall rigidity of the structure.

[0168] In contact with the outside of the fixing seat, there is a clamping block. Inside the clamping block, there is a wavy rubber pad fixedly connected. The wave crests and wave troughs of the rubber pad are arranged alternately. The number of wave crests is 5. The thickness gradually increases from the center to both sides. The center thickness is 8 mm, and the edge thickness is 12 mm (the ratio is 1:1.5). The rubber pad is made of nitrile rubber material, with a hardness of 65 Shore A. The surface is provided with herringbone anti-slip textures, which can effectively adapt to drain pipes with different pipe diameters and provide good anti-slip effects.

[0169] As an important innovation point of this reinforcement structure, the main parameters of the buffer mechanism are shown in Table 1:

[0170] Table 1 Main Parameter Table of the Buffer Mechanism

[0171] Component Name Quantity Dimensions (mm) Material Special Design Hinge Rod 2 Length 80 × Width 15 × Thickness 8 45# Steel Both Ends with Bearing Sleeves Slider 2 Diameter 45 × Height 30 Q235 Steel Internal Polishing Treatment Guide Rod 2 Diameter 12 × Length 150 Stainless Steel Surface Chrome Plating Treatment First Spring 1 Outer Diameter 20 × Inner Diameter 14 × Length 120 65Mn Steel Spring Rate 85 N / mm Guide Bar 1 Diameter 16 × Length 75 Stainless Steel Top Chamfering Treatment Guide Block 1 Diameter 30 × Height 25 Q235 Steel Bottom Bevel Design

[0172] When the buffer mechanism is working, two hinge rods hinged at the bottom of the connecting seat disperse the impact force received by the base to the sliding seat. The sliding seat is slidably connected to the base, and the guiding rod slidably sleeved inside is fixedly connected to the base. One end of the first spring is fixedly connected to one of the sliding seats, and the other end is fixedly connected to the other sliding seat, forming an effective shock absorption and buffering system. At the same time, the guide rod and guide block fixedly connected to the bottom of the inner wall of the base are slidably connected to the connecting seat, further enhancing the structural stability.

[0173] The key parameters and data of the connecting mechanism are shown in Table 2:

[0174] Table 2 Main Parameter Table of the Connecting Mechanism

[0175] Component Name Quantity Dimensions (mm) Material Characteristic Parameters Connecting Rod 1 Diameter 10 × Length 90 Stainless Steel Threaded Connections at Both Ends Second Spring 2 Outer Diameter 16 × Inner Diameter 12 × Length 25 65Mn Steel Spring Rate 35 N / mm Support Block 2 Length 30 × Width 20 × Thickness 15 Aluminum Alloy Semi - Elliptical Structure Ball 2 Diameter 8 Quenched Steel HRC58 - 62 Hardness Insert Block 2 Horizontal Width 25 × Vertical Width 15 × Length 72 Q235 Steel T - Shaped Structure Groove 2 Diameter 8.16 - Inner Wall Polishing Treatment

[0176] The working principle of the connecting mechanism is as follows: There are two symmetrically distributed second springs arranged outside the connecting rod fixedly connected inside the fixed seat. Two semi-elliptical support blocks are slidably sleeved outside the connecting rod. The support blocks are slidably connected to the fixed seat, and quenched steel balls with a diameter of 8 mm are movably sleeved inside. The balls are movably connected to the fixed seat, and T-shaped inserts are movably sleeved outside. The width of the horizontal part of the insert is greater than the width of the vertical part, the length of the vertical part is 72 mm (1.2 times the thickness of the fixed seat), and the thickness of the horizontal part is equal to the thickness of the clamping block. A groove with a diameter of 8.16 mm (the ratio of the outer diameter of the ball is 0.98) is opened inside the insert, and balls are movably sleeved in the groove. The insert is fixedly connected to the clamping block, forming a flexible and reliable connection structure.

[0177] In the actual application process, technicians first fix the entire device on the engineering foundation through the mounting seat on the base, and then rotate the knobs at both ends of the positive and negative screw rods to move the two sliders inwards or outwards, thereby driving the fixed rod, fixed seat, and clamping block to move and adjusting the distance between the clamping blocks. When the distance between the clamping blocks is suitable for the outer diameter of the drain pipe to be reinforced, place the drain pipe between the two clamping blocks, and the rubber pads are in close contact with the outer wall of the drain pipe, providing effective support and protection. At this time, the second spring in the connecting mechanism exerts an elastic force on the clamping block, making the clamping block tightly hold the drain pipe to prevent the pipe from loosening or vibrating.

[0178] In the renovation project of the drainage system of a certain water conservancy project, the diameter of the main drainage pipe is 160 mm. After adopting this reinforcement structure, the vibration amplitude of the pipe is reduced from the original 3.6 mm to 0.8 mm, a reduction of nearly 78%. At the same time, when encountering external impacts, the buffer mechanism can effectively absorb the impact energy, reducing the force transmitted to the drain pipe by about 65%, significantly extending the service life of the drain pipe.

[0179] Traditional drainage pipe reinforcement methods mainly use simple metal clamps or brackets for fixation. These methods have the following problems: First, the fixation is not firm and the pipe is prone to loosening; second, they cannot adapt to pipes of different diameters; third, they lack shock-absorbing functions and the pipe vibrates greatly; fourth, installation and adjustment are inconvenient; fifth, the service life is short. The reinforcement structure designed in the present invention adopts an innovative combination of a positive and negative screw adjustment mechanism, a wavy rubber pad, a buffer mechanism, and a connection mechanism, which solves the above problems. Compared with traditional methods, the present invention has the following significant advantages: First, through the design of the positive and negative screws and the slider, precise adaptation to drainage pipes of different diameters is achieved; second, the wavy rubber pad provides a larger contact area and better anti-slip effect; third, the buffer mechanism effectively reduces the impact of external shocks on the pipe; fourth, the connection mechanism ensures the stable connection between the clamping block and the fixed seat; fifth, the overall structure is strong and durable, and the service life is more than twice that of traditional methods; sixth, installation and adjustment are simple, greatly improving work efficiency. Through practical application, it is proved that this structure can effectively solve the technical problems in the reinforcement process of drainage pipes in water conservancy and hydropower projects, and has significant practical value and popularization significance.

[0180] The following provides a specific Embodiment 2 of the present invention: Please refer to Figure 1 、 Figure 2 , a drainage pipe reinforcement structure for a water conservancy and hydropower project, including a base 1. A plurality of uniformly distributed mounting seats 2 are fixedly connected to the outside of the base 1. A connecting seat 3 is slidably sleeved inside the base 1. Two symmetrically distributed sliders 4 are slidably sleeved inside the connecting seat 3. A positive and negative screw 5 is threadedly connected inside the slider 4. Knobs 6 are fixedly connected to both the left and right ends of the positive and negative screw 5. A fixing rod 7 is fixedly connected to the top of the slider 4. A fixing seat 10 is fixedly connected to the top of the fixing rod 7. A clamping block 11 is in contact with the outside of the fixing seat 10. A rubber pad 12 is fixedly connected to the inside of the clamping block 11. A buffer mechanism 8 is provided on the connecting seat 3, and a connection mechanism 9 is provided on the clamping block 11.

[0181] Please refer to Figure 1 、 Figure 2 , the buffer mechanism 8 includes hinge rods 81. Two symmetrically distributed hinge rods 81 are hinged to the bottom of the connecting seat 3. The other end of the hinge rod 81 is hinged to a sliding seat 82. The sliding seat 82 is slidably connected to the base 1. A guide rod 83 is slidably sleeved inside the sliding seat 82. The guide rod 83 is fixedly connected to the base 1. A first spring 84 is provided on the outside of the guide rod 83. One end of the first spring 84 is fixedly connected to one of the sliding seats 82, and the other end of the first spring 84 is fixedly connected to the other sliding seat 82. By designing the first spring 84, the acting force of the first spring 84 can act on the sliding seat 82. A guide rod 85 is fixedly connected to the bottom of the inner wall of the base 1. A guide block 86 is fixedly connected to the top of the guide rod 85. Both the guide rod 85 and the guide block 86 are slidably connected to the connecting seat 3. By designing the buffer mechanism 8, the drainage pipe can be protected.

[0182] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in FIGS. Figure 1 , Figure 2 , Figure 3 , Figure 4 , the connecting mechanism 9 includes a connecting rod 91. The connecting rod 91 is fixedly connected to the inside of the fixed seat 10. Two symmetrically distributed second springs 92 are arranged on the outer side of the connecting rod 91. Two symmetrically distributed support blocks 93 are slidably sleeved on the outer side of the connecting rod 91. The support blocks 93 are slidably connected to the fixed seat 10. A ball 94 is movably sleeved inside the support block 93. The ball 94 is movably connected to the fixed seat 10. An insertion block 95 is movably sleeved on the outer side of the ball 94. A groove 96 is formed inside the insertion block 95. The ball 94 is movably sleeved inside the groove 96. By designing the groove 96, the ball 94 can roll inside the insertion block 95. The insertion block 95 is slidably connected to the fixed seat 10. The insertion block 95 is fixedly connected to the clamping block 11. By designing the connecting mechanism 9, it is convenient to remove the clamping block 11.

[0183] Working principle: When in use, when it is necessary to reinforce the drain pipe, first place the drain pipe between the two clamping blocks 11, and then rotate the knob 6. The knob 6 drives the forward and reverse screw rod 5 to rotate, so that the slider 4 makes a threaded movement. The two sliders 4 move in opposite directions. The slider 4 drives the fixed rod 7 to move. The fixed rod 7 drives the fixed seat 10 and the clamping block 11 to move, so that the rubber pad 12 contacts the drain pipe, and the drain pipe can be clamped and positioned to achieve the purpose of reinforcement.

[0184] When it is necessary to remove the clamping block 11, directly pull the clamping block 11 horizontally. The clamping block 11 drives the insertion block 95 to move. The insertion block 95 makes a relative sliding with the ball 94. The arc surface of the groove 96 inside the insertion block 95 will squeeze and push the ball 94 to move. The ball 94 drives the support block 93 to move. The support block 93 slides along the connecting rod 91 and squeezes the second spring 92. One end of the second spring 92 is fixedly connected to the support block 93, and the other end of the second spring 92 is fixedly connected to the fixed seat 10. By designing the second spring 92, the acting force of the second spring 92 can act on the support block 93, so that the ball 94 can be separated from the insertion block 95, and then the insertion block 95 can be pulled out to remove the clamping block 11. When reinforcing drain pipes of different sizes, it is convenient to use the clamping block 11 of the appropriate size in a matching manner, and the reinforcement effect is better.

[0185] When the drain pipe is buried underground, when the drain pipe is subjected to the underground pressure, the connecting seat 3 will slide downward along the base 1, which can deflect the hinge rod 81. The hinge rod 81 drives the sliding seat 82 to move horizontally. The sliding seat 82 slides along the guide rod 83 and squeezes the first spring 84. Under the elastic action of the first spring 84, the stress on the drain pipe can be reduced, and the purpose of protecting the drain pipe can be achieved.

[0186] It should be noted that the detailed explanations of the variables involved in the present invention are shown in Table 3 below.

[0187] Table 3 Variable Explanation Table

[0188] <![CDATA[S s : Clamping stability coefficient]]> <![CDATA[F f : Clamping force applied by the clamping block]]> <![CDATA[L c : Contact arc length between the clamping block and the drain pipe]]> <![CDATA[μ c : Coefficient of friction between the clamping block and the drain pipe]]> <![CDATA[F e : External acting force (such as water flow impact force or vibration force)]]> <![CDATA[H s : Fixed seat height]]> <![CDATA[K g : Geometric stability factor]]> <![CDATA[W b : Bottom width of the fixed seat]]> <![CDATA[W t : Width of the top of the fixed seat]]> <![CDATA[L slot : chute length]]> <![CDATA[L arc : Arc length of the outer wall of the clamping block]]> <![CDATA[R slot : Radian radius of the chute]]> <![CDATA[R arc : Arc radius of the outer wall of the clamping block]]> <![CDATA[P a : Adjustment precision coefficient]]> <![CDATA[P t : Pitch of the screw]]> <![CDATA[R r : Ratio of screw rod to inner diameter of slider]]> <![CDATA[E s : Synchronization efficiency coefficient]]> <![CDATA[F l : Applied load force]]> ΔL: Displacement Increment of the Slider <![CDATA[ΔL1: Displacement of the left slider at the same rotation angle <!-- 14 -->]]> <![CDATA[ΔL2: Displacement of the right slider at the same rotation angle]]> <![CDATA[R c : Connection reliability coefficient]]> <![CDATA[S m : Yield strength of the ball material]]> <![CDATA[A c : Contact area]]> <![CDATA[K f : Shape factor]]> <![CDATA[F t : Applied tensile force]]> α: Coefficient of Thermal Expansion T: Temperature Change <![CDATA[R b : Ball radius]]> <![CDATA[θ c : Contact angle]]> <![CDATA[W h : Width of the horizontal part of the inserted block]]> <![CDATA[W v : Width of the longitudinal part of the insert block]]> <![CDATA[L v : Length of the longitudinal part of the insert block]]> <![CDATA[L f : Fixed seat thickness]]> <![CDATA[D b : Outer diameter of the ball <![CDATA[D c : Inner groove diameter of the inserted block]]> <![CDATA[P p : Anti-slip and anti-damage coefficient]]> <![CDATA[μ r : Coefficient of friction of the rubber pad]]> <![CDATA[A w : Effective contact area of the wavy structure]]> <![CDATA[H f : Hardness factor]]> <![CDATA[S d : Thickness distribution coefficient]]> <![CDATA[P c : Contact pressure]]> <![CDATA[D p : Drain pipe diameter]]> <![CDATA[A0: Contact area of the flat rubber pad]]> <![CDATA[N w : Number of wave peaks]]> <![CDATA[h w : Peak height]]> <![CDATA[L w : Wave period length]]> <![CDATA[H s : Shore A hardness of the rubber pad]]> <![CDATA[T c : Center thickness of rubber pad]]> <![CDATA[T e : Edge thickness of rubber pad]]>

[0189] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A drain pipe reinforcement structure for a water conservancy and hydropower project, including a base, characterized in that, A plurality of uniformly distributed mounting seats are fixedly connected to the outside of the base. A connecting seat is slidably sleeved inside the base. Two symmetrically distributed sliders are slidably sleeved inside the connecting seat. A left - right screw is threadedly connected inside the slider. Knobs are fixedly connected to both the left and right ends of the left - right screw. A fixed rod is fixedly connected to the top of the slider. A fixed seat is fixedly connected to the top of the fixed rod. A clamping block is in contact with the outside of the fixed seat. A rubber pad is fixedly connected to the inner side of the clamping block. A buffer mechanism is arranged on the connecting seat, and a connecting mechanism is arranged on the clamping block.

2. The drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 1, characterized in that, The buffer mechanism includes hinge rods. Two symmetrically distributed hinge rods are hinged to the bottom of the connecting seat. The other end of the hinge rod is hinged to a sliding seat. The sliding seat is slidably connected to the base. A guide rod is slidably sleeved inside the sliding seat. The guide rod is fixedly connected to the base. A first spring is arranged on the outside of the guide rod. A guide rod is fixedly connected to the bottom of the inner wall of the base. A guide block is fixedly connected to the top of the guide rod. Both the guide rod and the guide block are slidably connected to the connecting seat.

3. The drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 2, characterized in that, One end of the first spring is fixedly connected to one of the sliding seats, and the other end of the first spring is fixedly connected to the other sliding seat.

4. The drain pipe reinforcement structure of a water conservancy and hydropower project according to claim 3, characterized in that, The connecting mechanism includes a connecting rod. The connecting rod is fixedly connected to the inside of the fixed seat. Two symmetrically distributed second springs are arranged on the outside of the connecting rod. Two symmetrically distributed support blocks are slidably sleeved on the outside of the connecting rod. The support blocks are slidably connected to the fixed seat. A ball is movably sleeved inside the support block. The ball is movably connected to the fixed seat. An insertion block is movably sleeved on the outside of the ball. The insertion block is slidably connected to the fixed seat. The insertion block is fixedly connected to the clamping block.

5. The drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 4, characterized in that, One end of the second spring is fixedly connected to the support block, and the other end of the second spring is fixedly connected to the fixed seat.

6. The drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 5, characterized in that, A groove is formed inside the insertion block, and a ball is movably sleeved inside the groove.

7. The drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 6, wherein, The fixed seat has an inverted trapezoidal structure. The width of the top of the fixed seat is smaller than the width of the bottom. Arc - shaped sliding grooves are formed on both inner walls of the fixed seat. The sliding grooves are slidably connected to the clamping block. The radius of curvature of the sliding grooves matches the outer wall radius of curvature of the clamping block, and the length of the sliding grooves is 1.5 times the arc length of the outer wall of the clamping block. Reinforcing ribs are arranged at the four corners of the bottom of the fixed seat. The reinforcing ribs are fixedly connected to the fixed rod.

8. The drain pipe reinforcement structure of a water conservancy and hydropower project according to claim 7, characterized in that, The slider has a rectangular structure. Limit blocks are fixedly connected to both the front and rear sides of the slider. The limit blocks are in sliding contact with the connecting seat. Internal threads are formed on the inner wall of the slider. The internal threads are meshed with the external threads of the left - right screw. The thread directions on the left and right sides of the left - right screw are opposite. The ratio of the outer diameter of the left - right screw to the inner diameter of the slider is 0.

85. The ratio of the outer diameter of the slider to the inner diameter of the connecting seat is 0.

92.

9. A drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 8, characterized in that, The material of the ball is quenched steel. The ratio of the outer diameter of the ball to the diameter of the inner groove of the insert block is 0.

98. The insert block has a T-shaped structure. The width of the transverse part of the insert block is greater than the width of the longitudinal part. The ratio of the length of the longitudinal part of the insert block to the thickness of the fixed seat is 1.

2. The thickness of the transverse part of the insert block is equal to the thickness of the clamping block. The support block has a semi-elliptical structure. The flat side of the support block is in sliding contact with the inner wall of the fixed seat.

10. A drain pipe reinforcement structure for a water conservancy and hydropower project according to claim 9, characterized in that, The rubber pad has a wavy structure. The wave crests and wave troughs of the rubber pad are arranged alternately and the number of wave crests is 4 to 6. The thickness of the rubber pad gradually increases from the center to both sides. The ratio of the center thickness to the edge thickness is 1:1.

5. The rubber pad is made of nitrile rubber material. The hardness of the rubber pad is 60 to 70 Shore A. Anti-slip patterns are provided on the surface of the rubber pad. The anti-slip patterns are arranged in a herringbone pattern.

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