Device and method for improving anti-sliding force between main cable saddle and cable strand

Abstract

The invention discloses a device and method for improving anti-sliding force between a main cable saddle and a cable strand, the device comprises a connecting plate, a pressing rod, a pressing beam, a locking device and a cable strand contact plate, the connecting plate is used as a basic support, the pressing beam uniformly disperses pressure, the locking device realizes adjustment of different pressure magnitudes, the cable strand contact plate directly transmits the pressure to a main cable, and the main cable saddle and the cable strand contact plate are fixed. Through the design of the thread and the spherical end of the pressing rod, the pressure applied to the main cable is allowed to be accurately adjusted, the components form a stable pressure transmission system, torque is applied to the pressing rod through the torque plate, all the components work cooperatively, additional vertical pressure is applied to the main cable, and therefore the anti-sliding capacity between the main cable and the cable saddle is enhanced. Meanwhile, the device is convenient to mount, adjust and dismount, the working efficiency is improved, and the construction cost is reduced. According to the construction method, the problem that the anti-sliding force between the main cable and the cable saddle is insufficient in the construction process of the main beam of the multi-tower suspension bridge is solved, the safety in the construction process is ensured, and a new technical solution is provided for bridge construction.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge construction, and more specifically, relates to a device and method for improving the anti-slip force between a main cable saddle and cable strands. Background Art

[0002] Suspension bridges occupy an important position in the construction of long-span bridges due to their large span capacity and novel structure. In the construction of suspension bridges, the main cable saddle is one of the key structural components. It is responsible for supporting and guiding the main load-bearing cables of the bridge and transferring the load to the bridge tower. In order to ensure the safety and stability of the bridge, it is necessary to ensure a reliable connection between the main cable saddle and the cable strands, that is, a good anti-slip force is required to prevent slippage under various external forces. In traditional technologies, the method of increasing the anti-slip force between the main cable saddle and the cable strands relies on mechanical clamping, adding friction pads, etc. These methods may be affected by material aging, environmental factors, and wear problems after long-term use, thereby reducing their effectiveness. In recent years, some new technologies have been proposed, such as the patent document with application number CN202311634810.8, which discloses a device and method for optimizing the anti-slip performance of the middle tower of a multi-tower suspension bridge, including: a temporary locking clamp connected to the main cable; a tensioning device fixed to the pile foundation; and the tensioning device and the pile foundation are fixed by anchoring threaded steel bars. The upper end of the steel strand is fixed with a temporary locking clamp, and the lower end is connected to the tensioning device. The adjusting steel strand can be pre-tensioned before the first beam is installed in a single span, thereby weakening the unbalanced tension of the main cables on both sides of the middle tower during the subsequent beam hoisting process, thereby inhibiting the mutual sliding displacement between the main cable and the saddle groove, effectively improving the anti-slip performance of the saddle and main cable in the middle tower of the multi-tower suspension bridge, and greatly improving the construction quality and efficiency of this type of bridge. However, the device needs to optimize the anti-slip performance through temporary locking clamps, tensioning devices, pile foundations and other structures. The device is complicated to install, which increases the construction cost and reduces the construction efficiency. Summary of the invention

[0003] In view of the above defects or improvement needs of the prior art, the present invention provides a device and method for improving the anti-slip force between the main cable saddle and the cable strand. Through the combined design of the connecting plate, the pressure rod, the pressure beam, the locking device and the cable strand contact plate, a complete pressure transmission system is formed. The torque is applied to the pressure rod by a torque wrench, and the downward pressure is generated on the cable strand contact plate and transmitted to the main cable strand wire, thereby increasing the downward pressure of the main cable and significantly improving the friction between the main cable and the saddle, thereby enhancing the anti-slip force and ensuring the safety during the construction process.

[0004] In order to achieve the above object, according to one aspect of the present invention, the present invention provides a device for improving the anti-slip force between the main cable saddle and the cable strand, comprising: a connecting plate, a pressure rod, a pressure beam, a locking device and a cable strand contact plate, wherein:

[0005] The connecting plate is connected to the saddle pull rod to provide support for the pressure beam;

[0006] The rod body of the pressure rod is provided with a thread, so that the pressure rod can be firmly screwed into the locking device;

[0007] The compression beam is mounted on the connecting plate and supported and fixed by the connecting plate, and a plurality of through holes are provided in the middle thereof to allow the compression rod to pass through, so as to increase the compression load and evenly distribute the pressure from the compression rod;

[0008] The locking device is welded to the bottom of the pressure beam and has a thread inside for locking the pressure rod;

[0009] The cable strand contact plate is installed on the cable strand wire between the cable strand spacers of the cable saddle, and is used to bear the pressure from the pressure rod and transmit the pressure to the main cable;

[0010] The pressure rod is screwed into the top of the pressure beam and contacts the cable strand contact plate. The pressure rod is driven to move downward in the locking device by applying torque in stages to the pressure rod to generate different downward pressures on the cable strand contact plate.

[0011] Furthermore, a circular hole is opened at one end of the connecting plate, through which the two ends of the saddle pull rod are inserted and locked by nuts, and a connecting fork ear is arranged on it for installing and supporting the pressure beam.

[0012] Furthermore, the end of the pressure rod is a sphere.

[0013] Furthermore, the compression beam is welded from I-shaped steel and has a plurality of cavities formed therein. The upper and lower surfaces of the cavities are provided with guide circular holes matching the compression rods for the compression rods to pass through.

[0014] Furthermore, rectangular holes matching the connecting plate are provided at both ends of the compression beam, so as to pass through the connecting plate and be installed and fixed at the connecting fork ears of the connecting plate.

[0015] Furthermore, the locking devices are welded and fixed at the circular holes on the lower surface of the pressure beam, and all the locking devices are on a horizontal line.

[0016] Furthermore, a spherical groove corresponding to the spherical body at the end of the pressure rod is formed on the surface of the cable contact plate.

[0017] According to another aspect of the present invention, the present invention provides a method for improving the anti-slip force between the main cable saddle and the cable strands, using the above-mentioned device for improving the anti-slip force between the main cable saddle and the cable strands, comprising the following specific steps:

[0018] S100: After the cable strands are installed, the cable strand contact plate is fixed on the cable strands, and then the cable saddle pull rod and the connecting plate are installed and locked with nuts; then, the pressure beam welded with the locking device is installed at the connecting fork ear of the connecting plate; finally, the pressure rod is screwed in from the top of the pressure beam, and the torque wrench is used to preliminarily lock the pressure rod, and the device installation is completed;

[0019] S200: After completing the installation of the device, determine the required downforce using the following calculation formula:

[0020] P<μ(N+Q)

[0021] Among them, P is the unbalanced force of the main cable, μ is the friction coefficient between the main cable and the saddle, N is the pressure of the main cable on the saddle, and Q is the applied downward pressure. The unbalanced force P of the main cable, the friction coefficient μ between the main cable and the saddle, and the pressure N of the main cable on the saddle are obtained through experiments, design documents or on-site measurements;

[0022] According to the calculated downforce, use a torque wrench to apply torque to the compression rod in stages, gradually increasing the downforce until the calculated value is met;

[0023] S300: During the main beam construction process and the cable saddle pushing process, the sliding, deformation or other abnormal phenomena that may occur in the cable strands are automatically monitored, and the downward force of the device is adjusted in time to ensure that the condition of P<μ(N+Q) is always met;

[0024] S400: Remove the device, use a torque wrench to unload the pressure on the pressure rod and remove it from the pressure beam, then remove the pressure beam, loosen the saddle rod nut, remove the connecting plate and the cable strand contact plate, and re-tighten the saddle rod to complete the device removal.

[0025] Furthermore, the step S100 includes the following steps:

[0026] S101: Installing a cable strand contact plate on the cable strand wire between each cable strand partition of the cable saddle, ensuring that all the cable strand contact plates are on the same horizontal line and are tightly fitted to the cable strand surface without damaging the cable strand;

[0027] S102: installing the saddle rod. During the installation of the saddle rod, before installing the nut, the round hole at one end of the connecting plate is inserted into both ends of the saddle rod and locked with the nut.

[0028] S103: Adjust the position of the connecting plate, insert the pressure beam welded with the locking device through the rectangular hole from the upper end of the connecting plate, and gradually lower it to the connecting fork ear of the connecting plate to ensure that the pressure beam is installed stably and firmly;

[0029] S104: Screw the compression rod into the round hole at the top of the compression beam step by step, and use a torque wrench to apply appropriate torque to the compression rod until the spherical end of the compression rod contacts the bottom of the spherical groove of the cable strand contact plate, so that the compression rod is initially fixed;

[0030] S105: Perform a comprehensive inspection of the entire device to confirm that all components are installed correctly and not loose, and complete the installation of the device.

[0031] Furthermore, in step S300, detailed records should be kept after each adjustment of the device downforce, including the adjustment time, applied torque value, and observed phenomena.

[0032] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0033] 1. The device for improving the anti-slip force between the main cable saddle and the cable strand of the present invention forms a complete pressure transmission system through the combined design of the connecting plate, the pressure rod, the pressure beam, the locking device and the cable strand contact plate. The pressure rod is screwed into the top of the pressure beam and passes through the locking device to finally contact the cable strand contact plate. The torque is applied to the pressure rod by the torque wrench, and the downward pressure is generated on the cable strand contact plate and transmitted to the main cable strand wire, thereby increasing the downward pressure of the main cable, solving the problem of insufficient anti-slip ability between the main cable and the cable saddle during the construction of the main beam of the multi-tower suspension bridge, especially the relative sliding risk that may be caused by the unbalanced force of the main cable, significantly improving the friction between the main cable and the cable saddle, thereby enhancing the anti-slip ability and ensuring the safety during the construction process.

[0034] 2. The device for improving the anti-slip force between the main saddle and the cable strands of the present invention is directly fixed on the saddle pull rod, does not need to be fixed by an additional structure, and can achieve pressure application through simple torque adjustment. The installation operation is convenient and fast, thereby improving construction efficiency.

[0035] 3. The upper and lower surfaces of the pressure beam of the device for improving the anti-slip force between the main cable saddle and the cable strands of the present invention are provided with guide circular holes, allowing multiple pressure rods to pass through, thereby realizing multi-rod pressure to increase the pressure load and uniformly dispersing the pressure from the pressure rods, thereby avoiding the risk of damage to the main cable strands caused by local overload, ensuring uniform distribution of pressure on the entire cable strand contact surface, and protecting the main cable from the influence of uneven stress.

[0036] 4. The device for improving the anti-slip force between the main cable saddle and the cable strands of the present invention uses a torque wrench to apply torque to the pressure rod. The pressure rod is provided with a thread that can be rotated in the locking device to dynamically adjust the downward pressure applied to the main cable. It can cope with the downward pressure values ​​required in different construction stages, provides the device with the ability to flexibly adjust, and ensures that the best anti-slip performance can be maintained under any circumstances.

[0037] 5. The device for improving the anti-slip force between the main cable saddle and the cable strands of the present invention forms a clear and stable force transmission path from the cable strand contact plate to the pressure rod, then to the locking device, the pressure beam, the connecting plate, and finally to the cable saddle pull rod, ensuring the structural integrity of the entire system when under pressure, enhancing the overall reliability of the system, and greatly improving the safety during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of a device for improving the anti-slip force between a main cable saddle and a cable strand according to an embodiment of the present invention;

[0039] Figure 2 It is a side view structural schematic diagram of a device for improving the anti-slip force between a main cable saddle and a cable strand according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the installation of a pressure rod and a cable strand contact plate of a device for improving the anti-slip force between a main cable saddle and a cable strand according to an embodiment of the present invention;

[0041] Figure 4 The present invention is a schematic diagram of a method for improving the anti-slip force between a main cable saddle and cable strands according to an embodiment of the present invention.

[0042] In all the drawings, the same figure numbers represent the same technical features, specifically: 1-connecting plate, 2-pressure rod, 3-pressure beam, 4-locking device, 5-cable strand contact plate, 6-cable saddle, 7-cable saddle partition, 8-cable saddle pull rod, 9-cable strand wire. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] In this patent, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] like Figure 1 As shown, an embodiment of the present invention provides a device for improving the anti-slip force between the main cable saddle and the cable strand, comprising a connecting plate 1, a pressure rod 2, a pressure beam 3, a locking device 4 and a cable strand contact plate 5. The connecting plate 1 is connected to the cable saddle pull rod 8 to provide basic support, and the pressure beam 3 is placed at the connecting fork ears on both sides of the connecting plate, supported and fixed by the connecting plate. The locking device 4 is welded to the bottom of the pressure beam 3, and the pressure rod 2 is screwed in from the top of the pressure beam 3 and finally contacts the cable strand contact plate 5. The torque is applied to the pressure rod 2 in stages through a torque wrench, and different magnitudes of downward pressure are applied through the locking device 4, so that downward pressure is generated on the cable strand contact plate 5 and transmitted to the main cable strand wire, providing additional vertical pressure to the main cable, thereby improving the anti-slip ability between the main cable and the cable saddle, and ensuring the safety of the main beam of the multi-tower suspension bridge during construction.

[0048] Embodiment 1:

[0049] like Figure 1-3 As shown, the connecting plate 1 provides support for the pressure beam 3 and transmits force to the saddle pull rod 8. A round hole is opened at one end, and the two ends of the saddle pull rod 8 are inserted and locked by nuts. A connecting fork ear is also provided on it to support and fix the pressure beam 3;

[0050] The rod body of the pressure rod 2 is provided with a thread, so that the pressure rod 2 can be firmly screwed into the locking device 4, and the vertical pressure applied to the main cable can be finely adjusted by rotating and interacting with the locking device 4, and the force on the pull rod 2 is transmitted to the pressure beam 3; the end of the pressure rod 2 is a spherical body, which facilitates the rotation of the pressure rod 2 in the spherical groove under the action of the torque wrench, and the spherical end has a certain toughness to adapt to the pressure transmission requirements at different angles, while reducing the wear on the cable contact plate.

[0051] The compression beam 3 is welded from I-shaped steel, with multiple cavities formed inside. The upper and lower surfaces of the cavities are provided with circular holes matching the compression rods 2 and serving as guides for the compression rods 2 to pass through. On the one hand, allowing multiple compression rods 2 to pass through can realize multi-rod pressure to increase the pressure load. On the other hand, as a key component for force distribution, it is responsible for evenly dispersing the pressure from the compression rods 2 and evenly applying the pressure to the cable contact plate 5. Rectangular holes matching the connecting plate 1 are also provided at both ends of the compression beam 3, which are used to pass through the connecting plate 1 and be installed and fixed at the connecting fork ears of the connecting plate 1, so that the connecting plate 1 supports the compression beam 3.

[0052] The locking device 4 has threads inside and is welded and fixed to the circular hole on the lower surface of the pressure beam 3. All the locking devices 4 are on a horizontal line, ensuring the effectiveness and uniformity of pressure transmission, and are used to lock the pressure rod 2.

[0053] The cable strand contact plate 5 is installed on the cable strands between the cable strand partitions 7 of the cable saddle 6. It contacts the cable strands and directly transmits all the upper pressure to the main cable. A spherical groove corresponding to the pressure rod 2 is opened on its upper surface to receive the end of the pressure rod 2. The cable strand contact plate 5 is made of alloy steel or composite material, has good flexibility and elasticity, can closely fit the surface of the main cable without causing damage, and the spherical groove part needs to be particularly strong to withstand the pressure of the pressure rod 2 without deformation.

[0054] Before using the device of the present invention, the locking device 4 is welded and fixed under the pressure beam 3 in advance. After the cable strands are installed in the saddle 6, the cable strand contact plate 5 is first installed on the cable strand wire 9 between each saddle partition 7 of the saddle 6, and kept on the same horizontal line to facilitate uniform pressure bearing. Then the saddle pull rod 8 is installed. During the installation of the saddle pull rod 8, the connecting plate 1 is inserted before the nut is installed, and the pull rod nut is locked. Next, the position of the connecting plate 1 is adjusted, and the pressure beam 3 welded with the locking device 4 is inserted from the upper end of the connecting plate 1 and gradually lowered to the connecting fork ear of the connecting plate 1. Finally, the pressure rod 2 is gradually screwed in from the top of the pressure beam 3 until the spherical end of the pressure rod 2 contacts the bottom of the spherical groove of the cable strand contact plate 5, and the installation of the device of the present invention is completed.

[0055] When in use, the pressure rod 2 is screwed into the circular hole on the top of the pressure beam 3, passes through the internal cavity of the pressure beam 3 and the locking device 4, and finally enters the spherical groove of the cable strand contact plate 5. The torque is applied to the pressure rod 2 in stages by a torque wrench, and the pressure rod 2 is locked and fixed by the locking device 4, so that the pull rod 2 applies different magnitudes of downward pressure to the cable strand contact plate 5 under the torque and directly transmits it to the main cable strand, thereby increasing the friction between the main cable strand and the saddle. At the same time, the cable strand contact plate 5 generates a reaction force on the pressure rod 2, and this reaction force is transmitted to the locking device 4 through the pressure rod 2, and then to the pressure beam 3, and then to the connecting plate 1, and finally to the saddle pull rod 8, thereby forming a stable force transmission path, ensuring the structural integrity of the entire structure when under pressure, and enhancing the reliability of the device.

[0056] Embodiment 2:

[0057] like Figure 4 As shown, based on the above device, the present invention provides a method for increasing the anti-slip force between the main cable saddle and the cable strands, comprising the following specific steps:

[0058] S100: After the cable strands are installed, the device of the present invention is installed. After the cable strands are installed, first fix the cable strand contact plate 5 on the cable strands between the cable strand partitions 7 of the cable saddle 6 to ensure that they are level and tightly fitted. Next, install the cable saddle pull rod 8 and the connecting plate 1. Then, install the pressure beam with the locking device 4 at the connecting fork ear of the connecting plate 1 and keep it level. Finally, screw the pressure rod 2 from the top of the pressure beam 3 until its spherical end enters the spherical groove of the cable strand contact plate, and use a torque wrench to preliminarily lock the pressure rod 2. The whole process ensures that all components are installed correctly and without looseness, laying the foundation for subsequent pressure adjustment and construction safety. The specific steps are as follows:

[0059] S101: Install the strand contact plate 5 on the strand wire 9 between each saddle partition 7 of the saddle 6, and firmly fix the strand contact plate 5 on the strand wire 9 to ensure that it is in close contact with the strand surface without damaging the strand, and ensure that all the strand contact plates 5 are on the same horizontal line to ensure uniform pressure distribution.

[0060] S102: Install the saddle rod 8. During the installation of the saddle rod 8, the round hole at one end of the connecting plate 1 is inserted into both ends of the saddle rod 8 before installing the nut, and the nut is tightened to ensure that the connecting plate is firmly supported on the saddle rod 8.

[0061] S103: Adjust the position of the connecting plate 1, insert the pressure beam 3 welded with the locking device 4 from the upper end of the connecting plate 1 through the rectangular hole, and gradually lower it to the connecting fork ear of the connecting plate 1 to ensure that the pressure beam is installed smoothly and firmly. Use a level or other measuring tool to check whether the pressure beam is in a horizontal position, and make fine adjustments if necessary to ensure the effectiveness and uniformity of pressure transmission.

[0062] S104: Screw the compression rod 2 into the round hole on the top of the compression beam 3 step by step, and use a torque wrench to apply appropriate torque to the compression rod 2 until the spherical end of the compression rod contacts the bottom of the spherical groove of the cable contact plate 5, so that the compression rod 2 is initially fixed, but do not tighten it completely to facilitate subsequent adjustments. And ensure that the compression rod thread is clear, rotates smoothly, and has no jamming.

[0063] S105: Perform a comprehensive inspection on the entire device to confirm that all components are installed correctly and without looseness, especially the contact between the cable strand contact plate and the cable strand, and complete the installation of the device.

[0064] S200: After completing the installation of the device, determine the required downforce using the following calculation formula:

[0065] P<μ(N+Q)

[0066] Among them, P is the unbalanced force of the main cable, μ is the friction coefficient between the main cable and the saddle, N is the pressure of the main cable on the saddle, and Q is the applied downward pressure. The unbalanced force P of the main cable, the friction coefficient μ between the main cable and the saddle, and the pressure N of the main cable on the saddle are obtained through experiments, design documents or on-site measurements.

[0067] Use a torque wrench to apply torque to the pressure rod in stages, gradually increasing the downward force until the calculated value is met. During the process, the status of each component is monitored in real time to ensure uniform pressure transmission, and the data of each adjustment is recorded in detail to accurately control and optimize the anti-slip ability between the main cable and the saddle.

[0068] The torque wrench can provide precise and controllable rotational force to ensure that the pressure applied by each compression rod is consistent. In the process of applying torque, start from the lowest torque and increase a certain proportion (such as 10%) each time until the calculated Q value is met. After each level of torque is applied, check whether the system has any abnormal conditions, such as loose or deformed components.

[0069] S300: Dynamic adjustment of downforce: During the main beam construction process and the cable saddle pushing process, the cable strands may be automatically monitored for possible sliding, deformation or other abnormal phenomena, and the working status of the device is regularly checked. If displacement, deformation or other abnormal phenomena are found in the cable strands, the downforce of the device should be adjusted in time to ensure that the condition of P<μ(N+Q) is always met, and detailed records should be made after each adjustment, including the adjustment time, applied torque value and observed phenomena.

[0070] According to the monitoring data, evaluate whether the downforce needs to be adjusted. If it is confirmed that adjustment is needed, decide whether to increase or decrease the downforce according to the specific situation, taking into account factors such as the degree of deformation, location, and construction progress, and calculate the new Q value. Then use a torque wrench to fine-tune the pressure rod. For the part that needs to increase the downforce, gradually apply additional torque; for the part that needs to reduce the downforce, gradually release some torque to ensure that each adjustment is gradual and controllable. During the adjustment process, continue to monitor the cable strand status in real time to ensure that each adjustment can achieve the expected effect and ensure that the adjusted device can effectively increase the friction between the main cable and the saddle to meet the condition of P<μ(N+Q).

[0071] S400: Remove the device. During the removal process, the pressure rod 2 at the adjacent position must be tightened. Use a torque wrench to unload the pressure of the pressure rod 2 and remove it from the gauge. Then remove the pressure beam 3, loosen the saddle rod nut, remove the connecting plate 1 and the cable strand contact plate 5, re-lock the saddle rod and apply tension.

[0072] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for improving the anti-slip force between the main cable saddle and the cable strands, characterized in that: include: A connecting plate (1), a pressure rod (2), a pressure beam (3), a locking device (4) and a cable strand contact plate (5), wherein: The connecting plate (1) is connected to the saddle pull rod (8) to provide support for the pressure beam (3). The shaft of the pressure rod (2) is provided with a thread, so that the pressure rod (2) can be securely screwed into the locking device (4); The pressure beam (3) is mounted on the connecting plate (1) and supported and fixed by the connecting plate (1), and a plurality of through holes are provided in the middle thereof to allow the pressure rod (2) to pass through, so as to increase the pressure load and evenly distribute the pressure from the pressure rod (2); The locking device (4) is welded to the bottom of the pressure beam (3) and has a thread inside for locking the pressure rod (2); The cable strand contact plate (5) is installed on the cable strand wire (8) between the cable strand spacers (7) of the cable saddle (6) and is used to bear the pressure from the pressure rod (2) and transmit the pressure to the main cable; The pressure rod (2) is screwed in from the top of the pressure beam (3) and contacts the cable contact plate (5). By applying torque to the pressure rod (2) in stages, the pressure rod (2) is driven to move downward on the locking device (4), thereby generating downward pressures of different magnitudes on the cable contact plate (5).

2. A device for improving the anti-slip force between the main cable saddle and the cable strand according to claim 1, characterized in that: A circular hole is formed at one end of the connecting plate (1), through which the two ends of the saddle pull rod (8) are inserted and locked by nuts, and a connecting fork ear is provided on the connecting plate for mounting and supporting the pressure beam (3).

3. A device for improving the anti-slip force between the main cable saddle and the cable strand according to claim 1, characterized in that: The end of the pressure rod (2) is a spherical body.

4. A device for improving the anti-slip force between the main cable saddle and the cable strand according to claim 1, characterized in that: The pressure beam (3) is welded from I-shaped steel and has a plurality of cavities formed therein. The upper and lower surfaces of the cavities are provided with guide circular holes matching the pressure rod (2) for the pressure rod (2) to pass through.

5. A device for improving the anti-slip force between the main cable saddle and the cable strands according to claim 4, characterized in that: Rectangular holes matching the connecting plate (1) are also provided at both ends of the pressure beam (3) for passing through the connecting plate (1) and being installed and fixed at the connecting fork ears of the connecting plate (1).

6. A device for improving the anti-slip force between the main cable saddle and the cable strands according to claim 1, characterized in that: The locking devices (4) are welded and fixed at the circular hole on the lower surface of the pressure beam (3), and all the locking devices (4) are located on a horizontal line.

7. A device for improving the anti-slip force between the main cable saddle and the cable strands according to claim 1, characterized in that: The surface of the cable strand contact plate (5) is provided with a spherical groove corresponding to the spherical end of the pressure rod (2).

8. A method for improving the anti-slip force between a main cable saddle and a cable strand, using a device for improving the anti-slip force between a main cable saddle and a cable strand as claimed in any one of claims 1 to 7, characterized in that: The specific steps include: S100: After the cable strands are installed, the cable strand contact plate is fixed on the cable strands, and then the cable saddle pull rod and the connecting plate are installed and locked with nuts; then, the pressure beam welded with the locking device is installed at the connecting fork ear of the connecting plate; finally, the pressure rod is screwed in from the top of the pressure beam, and the torque wrench is used to preliminarily lock the pressure rod, and the device installation is completed; S200: After completing the installation of the device, determine the required downforce using the following calculation formula: P<μ(N+Q) Among them, P is the unbalanced force of the main cable, μ is the friction coefficient between the main cable and the saddle, N is the pressure of the main cable on the saddle, and Q is the applied downward pressure. The unbalanced force P of the main cable, the friction coefficient μ between the main cable and the saddle, and the pressure N of the main cable on the saddle are obtained through experiments, design documents or on-site measurements; According to the calculated downforce, use a torque wrench to apply torque to the compression rod in stages, gradually increasing the downforce until the calculated value is met; S300: During the main beam construction process and the cable saddle pushing process, the sliding, deformation or other abnormal phenomena that may occur in the cable strands are automatically monitored, and the downward force of the device is adjusted in time to ensure that the condition of P<μ(N+Q) is always met; S400: Remove the device, use a torque wrench to unload the pressure on the pressure rod and remove it from the pressure beam, then remove the pressure beam, loosen the saddle rod nut, remove the connecting plate and the cable strand contact plate, and re-tighten the saddle rod to complete the device removal.

9. A method for improving the anti-slip force between the main cable saddle and the cable strands according to claim 8, characterized in that: The step S100 includes the following steps: S101: Installing a cable strand contact plate (5) on the cable strand wire (9) between each cable saddle partition (7) of the cable saddle (6), ensuring that all the cable strand contact plates (5) are on the same horizontal line and are in close contact with the cable strand surface without damaging the cable strand; S102: installing the saddle pull rod (8). During the installation of the saddle pull rod (8), before installing the nut, the circular hole at one end of the connecting plate (1) is inserted into the two ends of the saddle pull rod (8), and the nut is used to lock the two ends; S103: Adjust the position of the connecting plate (1), insert the pressure beam (3) welded with the locking device (4) from the upper end of the connecting plate (1) through the rectangular hole, and gradually lower it to the connecting fork ear of the connecting plate (1), ensuring that the pressure beam (3) is installed stably and firmly; S104: gradually screw the pressure rod (2) into the circular hole at the top of the pressure beam (3), and use a torque wrench to apply appropriate torque to the pressure rod (2) until the spherical end of the pressure rod contacts the bottom of the spherical groove of the cable strand contact plate (5), so that the pressure rod (2) is initially fixed; S105: Perform a comprehensive inspection of the entire device to confirm that all components are installed correctly and not loose, and complete the installation of the device.

10. A method for improving the anti-slip force between the main cable saddle and the cable strands according to claim 8, characterized in that: In step S300, detailed records should be kept after each adjustment of the device downforce, including the adjustment time, applied torque value and observed phenomena.

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