Elastic anchoring device for rubber dam

Abstract

The utility model discloses an elastic anchoring device for rubber dam belongs to rubber dam anchoring technical field, aims at solving the problem that traditional rigid anchoring device cannot buffer dam bag vibration and easily causes dam bag tearing. The device includes the anchoring bolt of lower end preburied in dam foundation, and the upper pressing plate for anchoring dam bag is worn on the anchoring bolt and is fixed by the nut, still includes the elastic box, the elastic box includes the lower support fixed on the anchoring bolt, the upper support is set on the lower support top and is worn on the anchoring bolt, and the lower support and the upper support are along the length direction of anchoring bolt and are matched through spring reset type viscous damper, and the upper surface of elastic box and the lower surface of upper pressing plate cooperate and realize the sealed positioning of dam bag. The device can absorb and weaken dam bag resonance energy, suppresses the wide vibration, prolongs dam bag service life, and is suitable for different height rubber dam, can also expand the overflow operation range, and improves the landscape effect.

Description

Technical Field

[0001] This utility model belongs to the field of rubber dam anchoring technology, specifically relating to an elastic anchoring device for rubber dams, which is suitable for anchoring connections between various types of rubber dam bags and dam foundations, and can realize elastic buffering and vibration reduction protection of dam bag anchoring. Background Technology

[0002] Rubber dams are a new type of low-head water-retaining structure that emerged in the 1950s. They consist of a fiber cloth as the load-bearing framework and vulcanized natural rubber as a stop (air) protective layer, forming a dam bag. This bag is anchored to the riverbed foundation slab and end walls via pre-embedded bolts, creating a closed bladder. Flexible water retention is achieved by filling with water, air, or a combination of both. This type of dam possesses significant advantages such as simple structure, low investment cost, short construction period, long service life, and convenient operation and management, and is widely used in water conservancy projects.

[0003] Traditional rubber dam anchoring devices are rigid structures. The construction process involves pre-embedding a base plate and anchor bolts in the foundation, drilling holes in the dam bag to fit onto the bolts, placing an upper pressure plate on top of the dam bag, and tightening the nuts to secure the upper pressure plate, dam bag, and lower base plate together. However, as a flexible water-retaining structure, rubber dams are susceptible to vibration caused by pulsating water pressure under overflow or wave action. When the natural frequency of the dam bag approaches the external excitation frequency, resonance occurs, leading to tearing and accelerated wear of the dam bag, severely reducing the service life and operational safety of the rubber dam. Traditional rigid anchoring devices, lacking buffering and vibration damping capabilities, cannot solve these technical problems. Summary of the Invention

[0004] The purpose of this utility model is to provide an elastic anchoring device for rubber dams, which absorbs and weakens the resonance energy of the dam bag through an elastic buffer structure, suppresses large vibrations of the dam bag, prevents fatigue damage to the dam bag, extends its service life, and improves the versatility of the device to adapt to rubber dams of different heights, expands the overflow operation range of the rubber dam, and enhances the landscape effect of the rubber dam operation.

[0005] The overall technical concept of this utility model is:

[0006] The elastic anchoring device for rubber dams includes anchor bolts pre-embedded in the dam foundation at the lower end, an upper pressure plate for anchoring the dam bag passing through the anchor bolts and fixed by nuts; it also includes an elastic box, which includes a lower bracket fixed to the anchor bolts and an upper bracket set above the lower bracket and passing through the anchor bolts. The lower bracket and the upper bracket cooperate along the length of the anchor bolts through a spring-return viscous damper. The upper surface of the elastic box cooperates with the lower surface of the upper pressure plate to achieve sealing and positioning of the dam bag.

[0007] The specific technical concept of this utility model also includes:

[0008] The main function of the nut is to level and prevent it from coming off. The preferred technical means is that the nut includes a first anti-loosening nut and a second locking nut set on the anchor bolt above the upper pressure plate.

[0009] To enhance the sealing effect of the dam bag, the preferred technical means is to provide a first sealing rib on the top surface of the upper support and a second sealing rib on the bottom surface of the upper pressure plate. The first sealing rib and the second sealing rib are compatible with each other and are used to enhance the sealing performance at the anchorage of the dam bag.

[0010] To improve the structural strength of the upper support and prevent deformation under pressure, the preferred technical solution is to install compartment plates inside the upper support to enhance structural strength.

[0011] To adjust the installation height of the lower bracket in order to achieve consistency in the installation of multiple lower brackets, the preferred technical means is that the lower bracket is fixed to the anchor bolts by means of a first leveling nut and a first locking nut.

[0012] To facilitate the pre-assembly of the lower and upper brackets and the installation of the overall structure, a preferred technical approach is to provide limiting holes on both the lower and upper brackets. These limiting holes are adapted to quick-connect pins used for pre-assembly positioning of the lower and upper brackets. Furthermore, at least one limiting hole on each bracket is an elongated oval hole to accommodate variations in the distance between the bottom of the lower bracket and the top of the upper bracket.

[0013] To prevent large particles of silt from entering the elastic box, the preferred technical solution is to have baffles at both ends of the lower support, with the height of the baffles being higher than the height of the lower support body.

[0014] The main function of the spring-returning viscous damper is to achieve elastic fit between the lower support and the upper support along the length of the anchor bolts, effectively eliminating the energy generated by the resonance of the dam bag. The preferred technical means is that the spring-returning viscous damper includes a sleeve and a connecting rod that is slidably fitted inside it. The inner end of the connecting rod is set in the damping medium inside the sleeve. The spring is fitted on the outside of the sleeve and the connecting rod. The connecting rod and the sleeve are provided with positioning mechanisms for positioning the spring with adjustable spacing. The positioning mechanisms are positioned with the upper support and the lower support respectively.

[0015] The main function of the positioning mechanism is to facilitate the positioning of the spring, so that the spring can evenly transmit the force to the upper and lower supports, thereby ensuring that the elastic box and the upper pressure plate exert uniform force on the dam bag, thus improving the sealing effect of the dam bag. The preferred technical means is that the positioning mechanism includes a stop block fixed to the top of the connecting rod, an elastic adjusting nut that is threaded with the outer surface of the sleeve, and the stop block and the end of the sleeve are assembled with the positioning grooves / holes opened on the upper and lower supports using a stop joint.

[0016] Furthermore, the positioning groove / hole includes a first positioning groove formed on the inner side of the top of the upper bracket and a second positioning groove formed on the inner side of the bottom of the lower bracket.

[0017] The technological advancements achieved by this utility model are as follows:

[0018] 1. Excellent vibration reduction and damage prevention effect: This utility model adopts a spring-reset viscous damper, which can absorb and weaken the resonance energy of the dam bag, suppress large-scale vibration of the dam bag, avoid fatigue tearing of the dam bag due to resonance, and extend the service life of the dam bag.

[0019] 2. Expanded adaptability and versatility: This utility model can change the compression elasticity of the spring by adjusting the position of the elastic adjusting nut, adapting to the usage requirements of rubber dams of different heights, without the need for customized multi-specification anchoring devices.

[0020] 3. Enhanced sealing performance of the dam bag: In this utility model, the first sealing rib of the upper support and the second sealing rib of the upper pressure plate work together to seal the dam bag, enhancing the sealing performance of the dam bag anchorage and preventing water and air leakage.

[0021] 4. Enhanced landscape effect: This utility model allows for a wider range of overflow operation of the rubber dam, thus optimizing the landscape display effect of the rubber dam. Attached Figure Description

[0022] The accompanying drawings of this utility model are as follows:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0024] Figure 2 This is a schematic diagram of the assembly structure of this utility model and the dam bag.

[0025] Figure 3 This is a schematic diagram of the elastic box structure in this utility model.

[0026] Figure 4 yes Figure 3 AA view.

[0027] Figure 5 This is a schematic diagram of the upper support structure in this utility model.

[0028] Figure 6 yes Figure 5 BB view.

[0029] Figure 7 This is a schematic diagram of the lower support structure in this utility model.

[0030] Figure 8 yes Figure 7 The CC view.

[0031] Figure 9This is a schematic diagram of the elastic box structure in this utility model.

[0032] The reference numerals in the attached figures are as follows:

[0033] 1. Anchor bolt; 2. Nut; 3. Elastic box; 3A. Upper bracket; 3A1. First sealing rib; 3A2. First bolt hole; 3A3. First positioning groove; 3A4. Compartment plate; 3A5. Strip-shaped limiting hole; 3B. Lower bracket; 3B1. Limiting hole; 3B2. Second bolt hole; 3B3. Second positioning groove; 3B4. Baffle; 3C. Spring-return viscous damper; 3C1. Stop block; 3C2. Spring; 3C3. Connecting rod; 3C4. Sleeve; 3C5. Elastic adjusting nut; 3D. Quick-connect pin; 4. Upper pressure plate; 4A. Second sealing rib; 5. First leveling nut; 6. First locking nut; 7. First anti-loosening nut; 8. Second locking nut; 9. Dam bag. Detailed Implementation

[0034] The accompanying drawings illustrate embodiments of the present invention. The embodiments of the present invention will be further described below with reference to the accompanying drawings, but should not be construed as limiting the present invention. The scope of protection of the present invention is determined by the contents of the claims. Any equivalent technical means substitutions made in accordance with the specification shall not depart from the scope of protection of the present invention.

[0035] The overall structure of this embodiment is shown in the figure. It includes an anchor bolt 1 pre-embedded in the dam foundation at the lower end. The anchor bolt 1 adopts an L-shaped bending structure, which can increase the contact area with the dam foundation and improve the anchoring stability. The upper pressure plate 4 used to anchor the dam bag 9 passes through the anchor bolt 1 and is fixed by a nut. The nut includes a first anti-loosening nut 7 and a second locking nut 8 set on the anchor bolt 1 above the upper pressure plate 4.

[0036] It also includes an elastic box 3, which includes a lower bracket 3B fixed to the anchor bolt 1 through the second bolt hole 3B2, and an upper bracket 3A disposed above the lower bracket 3B and passing through the anchor bolt 1. The lower bracket 3B and the upper bracket 3A are engaged along the length of the anchor bolt 1 by a spring-return type viscous damper 3C. The top surface of the upper bracket 3A is provided with a first sealing rib 3A1, and the bottom surface of the upper pressure plate 4 is provided with a second sealing rib 4A. The first sealing rib 3A1 and the second sealing rib 4A are mutually adapted and used to enhance the sealing performance at the anchorage of the dam bag 9. The upper bracket 3A contains a compartment plate 3A4 to enhance the structural strength.

[0037] The lower bracket 3B is fixed to the anchor bolt 1 by passing through the first leveling nut 5 and the first locking nut 6. A limiting hole 3B1 is provided on the lower bracket 3B, and a strip-shaped limiting hole 3A5 is provided on the upper bracket 3A. The limiting hole 3B1 and the strip-shaped limiting hole 3A5 are adapted to the quick-connect pin 3D used for pre-assembly limiting of the lower bracket 3B and the upper bracket 3A. Baffles 3B4 are provided at both ends of the lower bracket 3B, and the height of the baffles 3B4 is higher than the height of the lower bracket 3B body.

[0038] The spring-return type viscous damper 3C includes a sleeve 3C4 and a connecting rod 3C3 that is slidably fitted inside it. The inner end of the connecting rod 3C3 is located in the damping medium inside the sleeve 3C4. The spring 3C2 is fitted on the outside of the sleeve 3C4 and the connecting rod 3C3. The connecting rod 3C3 and the sleeve 3C4 are provided with positioning mechanisms for positioning the spring 3C2 with adjustable spacing. The positioning mechanisms are positioned with the upper bracket 3A and the lower bracket 3B, respectively.

[0039] The positioning mechanism includes a stop block 3C1 fixed to the top of the connecting rod 3C3, and an elastic adjusting nut 3C5 that is threaded to the outer surface of the sleeve 3C4. The upper part of the stop block 3C1 is fitted with the first positioning groove 3A3 on the upper bracket 3A, and the lower end of the sleeve 3C4 is fitted with the second positioning groove 3B3 on the lower bracket 3B.

[0040] This embodiment is installed as follows:

[0041] A. Determine the placement of anchor bolt 1 on the dam foundation and tighten the first leveling nut 5 to the preset height of anchor bolt 1;

[0042] B. Insert the lower bracket 3B into the anchor bolt 1 through the second bolt hole 3B2, screw on the first anti-loosening nut 7, adjust multiple sets of lower brackets 3B to the same horizontal line, and then tighten the first locking nut 6 to complete the fixing of the lower bracket 3B.

[0043] C. Adjust the elastic adjusting nut 3C5 to the preset position, put the lower end of the sleeve 3C4 into the second positioning groove 3B3 of the lower bracket 3B, fasten the upper bracket 3A above the lower bracket 3B, so that the upper end of the spring return type viscous damper 3C is embedded in the first positioning groove 3A3 of the upper bracket 3A, and insert the quick-connect pin 3D to complete the pre-assembly of the elastic box 3.

[0044] D. Insert the anchor bolt 1 into the hole of the dam bag 9 and lay it flat on the top surface of the elastic box 3. Cover it with the upper pressure plate 4, tighten the second locking nut 8, and then pull out the quick-release pin 3D.

[0045] E. Fill the dam bag 9 with water or air, and the rubber dam can be put into operation.

[0046] The working process of this embodiment is as follows:

[0047] When the rubber dam overflows or vibrates due to wind and waves, the vibration of the dam bag 9 is transmitted to the elastic box 3. The spring 3C2 of the spring-reset viscous damper 3C first undergoes elastic deformation to buffer the vibration impact force. At the same time, the connecting rod 3C3 slides in the damping medium in the sleeve 3C4, absorbing and consuming the vibration energy released by the spring 3C2, thus achieving the vibration reduction effect. To meet the vibration intensity requirements of rubber dams of different heights, the compression of the spring 3C2 can be changed by rotating the elastic adjusting nut 3C5, thereby adjusting its elastic coefficient to adapt to different working conditions.

Claims

1. An elastic anchoring device for rubber dams, comprising an anchoring bolt (1) pre-embedded at its lower end in the dam foundation, and an upper pressure plate (4) for anchoring the dam bag (9) passing through the anchoring bolt (1) and fixed by a nut; characterized in that It also includes an elastic box (3), which includes a lower bracket (3B) fixed on the anchor bolt (1) and an upper bracket (3A) set above the lower bracket (3B) and passing through the anchor bolt (1). The lower bracket (3B) and the upper bracket (3A) cooperate along the length direction of the anchor bolt (1) through a spring-return type viscous damper (3C). The upper surface of the elastic box (3) cooperates with the lower surface of the upper pressure plate (4) to achieve sealing and positioning of the dam bag (9).

2. The elastic anchoring device for rubber dams according to claim 1, characterized in that... The nuts include a first anti-loosening nut (7) and a second locking nut (8) located on the anchor bolt (1) above the upper pressure plate (4).

3. The elastic anchoring device for rubber dams according to claim 1, characterized in that... The top surface of the upper support (3A) is provided with a first sealing rib (3A1), and the bottom surface of the upper pressure plate (4) is provided with a second sealing rib (4A). The first sealing rib (3A1) and the second sealing rib (4A) are compatible with each other and are used to enhance the sealing of the anchorage of the dam bag (9).

4. The elastic anchoring device for rubber dams according to claim 1, characterized in that... The upper support (3A) is internally equipped with compartment plates (3A4) to enhance structural strength.

5. The elastic anchoring device for rubber dams according to claim 1, characterized in that... The lower bracket (3B) is fixed to the anchor bolt (1) by passing through the first leveling nut (5) and the first locking nut (6).

6. The elastic anchoring device for rubber dams according to claim 1, characterized in that... Limiting holes are provided on the lower bracket (3B) and the upper bracket (3A), and the limiting holes are adapted to the quick-connect pin (3D) used for pre-assembly limiting of the lower bracket (3B) and the upper bracket (3A).

7. The elastic anchoring device for rubber dams according to claim 1, characterized in that... The lower support (3B) has baffles (3B4) at both ends, and the height of the baffles (3B4) is higher than the height of the lower support (3B) body.

8. The elastic anchoring device for rubber dams according to any one of claims 1 to 7, characterized in that... The spring-returning viscous damper (3C) includes a sleeve (3C4) and a connecting rod (3C3) that is slidably fitted inside it. The inner end of the connecting rod (3C3) is located in the damping medium inside the sleeve (3C4). The spring (3C2) is fitted on the outside of the sleeve (3C4) and the connecting rod (3C3). The connecting rod (3C3) and the sleeve (3C4) are provided with positioning mechanisms for positioning the spring (3C2) with adjustable spacing. The positioning mechanisms are respectively positioned with the upper bracket (3A) and the lower bracket (3B).

9. The elastic anchoring device for rubber dams according to claim 8, characterized in that... The positioning mechanism includes a stop (3C1) fixed to the top of the connecting rod (3C3), an elastic adjusting nut (3C5) threaded to the outer surface of the sleeve (3C4), and the ends of the stop (3C1) and the sleeve (3C4) are fitted with positioning grooves / holes opened on the upper bracket (3A) and the lower bracket (3B) using a stop joint assembly.

10. The elastic anchoring device for rubber dams according to claim 9, characterized in that... The positioning groove / hole includes a first positioning groove (3A3) opened on the inner side of the top of the upper bracket (3A) and a second positioning groove (3B3) set on the inner side of the bottom of the lower bracket (3B).

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