A movable arch bridge support frame

Abstract

The utility model discloses an arch bridge support frame convenient to remove, including two parallel bearing bottom plate of setting, two bearing bottom plate's upper end assembly has the arched support bottom plate, the top of arched support bottom plate assembly has arched support top plate, the outer surface of arched support top plate even equidistance is installed with rubber convex strip, the top of arched support top plate is located between two adjacent rubber convex strip and is all seted up with fixed groove, and the inside of each fixed groove all is installed with top surface support subassembly, this arch bridge support frame convenient to remove is installed with drive wheel at the bottom end four corners of bearing bottom plate, and is provided with the brake on drive wheel. This design makes support frame can be according to the construction demand and easily moves to the specified position, and the moving process is convenient and efficient, and the flexibility and the use convenience of equipment have been improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of arch bridge support frame technology, specifically an arch bridge support frame that is easy to move. Background Technology

[0002] Arch bridges, as a classic bridge structure, are widely used in bridge construction, maintenance, and repair projects due to their beautiful shape and reasonable stress performance. However, reliable support equipment is needed to ensure construction safety and project quality during construction and subsequent maintenance and repair work.

[0003] Currently, existing arch bridge support frames have several shortcomings. Traditional support frames often have fixed structures, poor flexibility, and are not easy to move and adjust quickly according to changes in the construction site. They are insufficiently adaptable to the support requirements of arch bridges with different spans and curvatures. Furthermore, the top support structure of existing support frames is mostly fixed, making it impossible to precisely adjust the height according to the actual conditions of the arch bridge's underside. This can easily lead to unstable support and uneven stress, thus affecting construction safety. Moreover, during adjustment, some support structures lack effective sealing protection, allowing dust and debris to easily enter the adjustment components, affecting the smoothness of adjustment and the structure's lifespan. In addition, traditional support frames lack good cushioning and anti-slip structures when in contact with the arch bridge's underside, which may damage the arch bridge surface and pose a risk of support slippage, creating safety hazards during construction.

[0004] To address the aforementioned issues and improve the mobility, stability, and adaptability of arch bridge support frames, this invention proposes an easily movable arch bridge support frame. Utility Model Content

[0005] The purpose of this invention is to provide an easily movable arch bridge support frame to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a movable arch bridge support frame, comprising two parallel load-bearing base plates, an arched support base plate mounted on the upper end of the two load-bearing base plates, and an arched support top plate mounted on the top of the arched support base plates; rubber protrusions are evenly and equidistantly installed on the outer surface of the arched support top plate, and a fixing groove is formed between two adjacent rubber protrusions at the top of the arched support top plate, with a top surface support assembly installed inside each fixing groove; the top surface support assembly includes a threaded rod installed in the fixing groove, the upper outer end of the threaded rod being screwed to a support cylinder, and a rubber pad being mounted on the top surface of the support cylinder.

[0007] As a preferred embodiment of the movable arch bridge support frame of this utility model, the inner wall of the support cylinder is provided with an internal thread, which is engaged with the external thread of the threaded rod. A sealing component is installed at the bottom opening of the support cylinder, and the sealing component is sleeved on the outside of the threaded rod.

[0008] As a preferred embodiment of the present invention for a movable arch bridge support frame, the sealing assembly includes rubber pad a and rubber pad b sleeved on the outside of the threaded rod, with rubber blocks evenly installed at the edges between rubber pad a and rubber pad b.

[0009] As a preferred embodiment of the movable arch bridge support frame of this utility model, the left and right side walls of the support cylinder are equipped with limit rods, the inner wall of the limit rods is provided with helical teeth, and the helical teeth mesh with the external thread of the threaded rod.

[0010] As a preferred embodiment of the movable arch bridge support frame of this utility model, the inner wall of the rubber pad is provided with a filling cavity, an arched elastic plate is installed inside the filling cavity, and the outer wall of the rubber pad is provided with protrusions.

[0011] As a preferred embodiment of the movable arch bridge support frame of this utility model, a hydraulic cylinder is mounted on the top of the bearing base plate on the outer wall of the arch support base plate, a hydraulic telescopic rod is mounted on the driving end of the hydraulic cylinder, the top of the hydraulic telescopic rod is connected to the arch support top plate, a slide rail is installed on the vertical end of the arch support base plate, and the inner wall of the arch support top plate is installed in the slide rail by a slider.

[0012] As a preferred embodiment of the movable arch bridge support frame of this utility model, drive wheels are installed at the four corners of the bottom of the bearing base plate, and brakes are provided on the drive wheels.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the design of this easy-to-move arch bridge support frame is reasonable.

[0014] This easily movable arch bridge support frame is equipped with drive wheels at the four corners of the bottom of the load-bearing base plate, and the drive wheels are equipped with brakes. This design allows the support frame to be easily moved to the designated location according to construction needs. The movement process is convenient and efficient, greatly improving the flexibility and ease of use of the equipment, and enabling it to quickly adapt to different construction sites and changes in work positions.

[0015] The top support assembly includes a threaded rod installed in a fixed groove. A support cylinder is screwed to the upper outer end of the threaded rod, and the inner wall of the support cylinder has an internal thread that mates with the external thread of the threaded rod. By rotating the support cylinder, the height of the support cylinder can be precisely adjusted using the interaction of the internal and external threads. This adjustable structure allows the support frame to be specifically adjusted according to the actual height and curvature of the arch bridge's base, ensuring that each top support assembly is in close contact with the arch bridge's base, guaranteeing the uniformity and stability of the support, and effectively improving the support frame's adaptability to different arch bridge structures. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the top surface support component of this utility model;

[0018] Figure 3 This is a cross-sectional view of the support cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the rubber pad of this utility model.

[0020] In the diagram: 1. Bearing base plate; 2. Arched support base plate; 3. Arched support top plate; 4. Rubber protrusion; 5. Slide rail; 6. Hydraulic cylinder; 7. Hydraulic telescopic rod; 8. Drive wheel; 9. Fixing groove; 10. Top support assembly; 11. Threaded screw rod; 12. Support cylinder; 13. Rubber pad; 14. Limiting rod; 15. Helical tooth; 16. Internal thread; 17. Rubber pad b; 18. Rubber block; 19. Rubber pad a; 20. Filling cavity ratio; 21. Arched elastic plate; 22. Protrusion. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution:

[0023] In this technical solution, an easily movable arch bridge support frame includes two parallel load-bearing base plates 1. An arched support base plate 2 is mounted on the upper end of the two load-bearing base plates 1, and an arched support top plate 3 is mounted on the top of the arched support base plate 2. Rubber protrusions 4 are evenly and equidistantly installed on the outer surface of the arched support top plate 3. A fixing groove 9 is opened between two adjacent rubber protrusions 4 at the top of the arched support top plate 3. A top surface support assembly 10 is installed inside each fixing groove 9. The top surface support assembly 10 includes a threaded rod 11 installed in the fixing groove 9. The upper outer end of the threaded rod 11 is screwed to a support cylinder 12. A rubber pad 13 is mounted on the top surface of the support cylinder 12.

[0024] The load-bearing base plate 1, as the fundamental load-bearing component of the entire support frame, is typically made of high-strength steel, such as Q345B. This steel possesses excellent comprehensive mechanical properties, with a yield strength of approximately 345MPa, enabling it to withstand significant pressure and tension. Two load-bearing base plates 1 are arranged parallel to each other, with the spacing flexibly adjusted between 2 and 5 meters according to the actual width of the arch bridge to accommodate different specifications. The arched support base plate 2 is connected to the load-bearing base plate 1 by welding or high-strength bolts. During welding, the weld strength must reach a level comparable to the base material to ensure a robust connection. If bolted connections are used, M20 bolts can be selected, with a tightening torque controlled between 200-250 N·m. The curvature design of the arched support base plate 2 is adapted to the curvature of common arch bridges, generally with an arch height to span ratio between 1 / 5 and 1 / 8. This reasonable curvature design effectively disperses the pressure transmitted from the arched support top plate 3, improving the overall stability of the support frame. The arched support top plate 3 and the arched support bottom plate 2 are also connected by welding or bolting. Their dimensions need to be determined according to the actual support area of ​​the bottom surface of the arch bridge. They are usually 3-8 meters long and 0.5-1.5 meters wide to ensure that they can provide sufficient support area for the arch bridge.

[0025] The load-bearing base plate 1 is made of Q345B with a yield strength of 345MPa; the spacing is 2-5 meters. The connecting bolts are M20, and the tightening torque is 200-250 N·m. The arch height to span ratio of the arched support base plate 2 is 1 / 5-1 / 8. The arched support top plate 3 is 3-8 meters long and 0.5-1.5 meters wide.

[0026] The rubber protrusions 4 are made of natural rubber with a Shore hardness of 60-70 HA. This hardness ensures sufficient friction while providing a certain degree of flexibility to avoid damage to the bottom surface of the arch bridge. The height of the rubber protrusions 4 is 15-20 mm, the width is 20-30 mm, and the spacing between adjacent rubber protrusions 4 is 50-80 mm. The depth of the fixing groove 9 is 1 / 3-1 / 2 of the length of the threaded rod 11, ensuring sufficient stability after installation. Its width matches the outer diameter of the support cylinder 12, with a tolerance controlled within ±0.5 mm. The threaded rod 11 is made of 45# steel, heat-treated to achieve a hardness of HRC28-32, ensuring sufficient strength to withstand pressure. The diameter of the threaded rod 11 is 16-24 mm, and the pitch is 2-3 mm. The support cylinder 12 is made of 304 stainless steel, which has good corrosion resistance. Its inner diameter matches the outer diameter of the threaded rod 11 with a precision of H7 / g6, ensuring the smoothness and stability of the threaded connection. The rubber pad 13 is made of nitrile rubber with a thickness of 8-12mm, which can effectively buffer the supporting force and protect the bottom surface of the arch bridge.

[0027] Rubber protrusions 4 have a Shore hardness of 60-70HA, a height of 15-20mm, a width of 20-30mm, and a spacing of 50-80mm. The fixing groove 9 has a depth of 1 / 3-1 / 2 the length of the threaded rod 11, and its width matches the outer diameter of the support cylinder 12, with a tolerance of ±0.5mm. The threaded rod 11 is made of 45# steel, with a hardness of HRC28-32, a diameter of 16-24mm, and a pitch of 2-3mm. The support cylinder 12 is made of 304 stainless steel, with a fit accuracy of H7 / g6 with the threaded rod 11. The rubber pad 13 is made of nitrile rubber, with a thickness of 8-12mm.

[0028] The pitch of the internal thread 16 is the same as that of the threaded rod 11, which is 2-3mm, and the thread accuracy grade is 6H. This ensures a tight fit with the external thread of the threaded rod 11, enabling precise height adjustment. The sealing component plays a crucial role, effectively preventing dust and debris from entering the support cylinder 12 and affecting the normal operation of the thread.

[0029] Internal thread 16, pitch 2-3mm, accuracy class 6H.

[0030] Both rubber pads a19 and b17 are made of EPDM rubber, which has excellent aging resistance and a working temperature range of -40℃ to 120℃. The thickness of both rubber pads a19 and b17 is 5-8mm. Their inner diameter is 1-2mm larger than the outer diameter of the threaded rod 11 and 1-2mm smaller than the inner diameter of the support cylinder 12. During installation, they must fit tightly between the threaded rod 11 and the support cylinder 12. Rubber block 18 is made of neoprene rubber, which has good wear resistance and tear resistance. The side length of rubber block 18 is 10-15mm, and its height is the same as the thickness of rubber pads a19 and b17. It is evenly distributed along the edges between rubber pads a19 and b17, with a spacing of 10-15mm between adjacent rubber blocks 18. It is tightly connected to rubber pads a19 and b17 through a vulcanization process.

[0031] Rubber pads A19 and B17 are made of EPDM rubber, with a working temperature of -40℃ to 120℃, a thickness of 5-8mm, and an inner diameter 1-2mm larger than the outer diameter of threaded rod 11, and an outer diameter 1-2mm smaller than the inner diameter of support cylinder 12. Rubber block 18 is made of neoprene rubber, with a side length of 10-15mm, a height of 5-8mm, and a spacing of 10-15mm.

[0032] In some technical solutions, the inner wall of the support cylinder 12 is provided with an internal thread 16, which is matched with the external thread of the threaded rod 11. A sealing component is installed inside the support cylinder 12 at the bottom opening, and the sealing component is sleeved on the outside of the threaded rod 11.

[0033] In some technical solutions, the sealing assembly includes rubber pads a19 and b17 sleeved on the outside of the threaded rod 11, and rubber blocks 18 are evenly installed at the edge between rubber pads a19 and b17.

[0034] In some technical solutions, limit rods 14 are installed on both the left and right side walls of the support cylinder 12. The inner wall of the limit rod 14 is provided with helical teeth 15, and the helical teeth 15 mesh with the external thread of the threaded rod 11.

[0035] The limiting rod 14 is made of 40Cr material, hardened and tempered to a hardness of HRC40-45, ensuring its strength and wear resistance. The length of the limiting rod 14 is 1 / 3-1 / 2 of the height of the support cylinder 12, its width is 15-20mm, and its thickness is 8-12mm. The pitch of the helical teeth 15 is the same as that of the threaded rod 11, which is 2-3mm, with a tooth height of 1-1.5mm and a tooth profile angle of 60°. Through the engagement of the limiting rod 14 and the threaded rod 11, accidental rotation of the support cylinder 12 during adjustment is effectively prevented, ensuring the stability of the support height.

[0036] The limiting lever 14 is made of 40Cr material with a hardness of HRC40-45. Its length is 1 / 3 to 1 / 2 of the height of the support cylinder 12, its width is 15-20mm, and its thickness is 8-12mm. The spiral tooth 15 has a pitch of 2-3mm, a tooth height of 1-1.5mm, and a tooth profile angle of 60°.

[0037] In some technical solutions, the inner wall of the rubber pad 13 is provided with a filling cavity 20, an arched elastic plate 21 is installed inside the filling cavity 20, and the outer wall of the rubber pad 13 is provided with a protrusion 22.

[0038] The depth of the filling cavity 20 is 1 / 3 to 1 / 2 of the thickness of the rubber pad 13, and the width is 2 / 3 to 3 / 4 of the width of the rubber pad 13, providing sufficient installation space for the arched elastic plate 21 while ensuring that the rubber pad 13 has a certain strength. The arched elastic plate 21 is made of spring steel 65Mn with a thickness of 1-2mm. After heat treatment, its elastic modulus is between 190-210GPa, which can effectively enhance the elasticity and cushioning capacity of the rubber pad 13. The protrusions 22 are made of the same nitrile rubber material as the rubber pad 13, with a height of 2-3mm and a diameter of 5-8mm. The spacing between adjacent protrusions 22 is 10-15mm, and they are evenly distributed on the outer wall of the rubber pad 13, which can significantly increase the friction with the bottom surface of the arch bridge and prevent slippage during the support process.

[0039] The filling cavity 20 has a depth of 1 / 3 to 1 / 2 the thickness of the rubber pad 13, and a width of 2 / 3 to 3 / 4 the width of the rubber pad 13. The arched elastic plate 21 is made of spring steel 65Mn, with a thickness of 1-2mm and an elastic modulus of 190-210GPa. The protrusions 22 have a height of 2-3mm, a diameter of 5-8mm, and a spacing of 10-15mm.

[0040] In some technical solutions, a hydraulic cylinder 6 is installed at the top of the supporting base plate 1 on the outer wall of the arched supporting base plate 2. A hydraulic telescopic rod 7 is installed at the driving end of the hydraulic cylinder 6. The top of the hydraulic telescopic rod 7 is connected to the arched supporting top plate 3. A slide rail 5 is installed at the vertical end of the arched supporting base plate 1. The inner wall of the arched supporting top plate 3 is installed in the slide rail 5 by a slider.

[0041] Hydraulic cylinder 6 is a multi-stage telescopic hydraulic cylinder with a rated pressure of 16-25MPa and a maximum stroke ranging from 1 to 3 meters depending on the height of the arch bridge. The hydraulic telescopic rod 7 is made of 42CrMo material, heat-treated, with a yield strength greater than 930MPa, ensuring it can withstand significant pressure. The slide rail 5 is made of hot-rolled steel, such as channel steel, and its specifications can be selected according to actual load-bearing requirements, typically in sizes 8#-12#. The length of the slide rail 5 is the same as the height of the arch support base plate 2. The fitting accuracy between the slider and the slide rail 5 is H8 / f7, ensuring the stability and accuracy of the arch support top plate 3 during vertical movement.

[0042] The hydraulic cylinder 6 has a rated pressure of 16-25 MPa and a maximum stroke of 1-3 meters. The hydraulic telescopic rod 7 is made of 42CrMo material with a yield strength greater than 930 MPa. The slide rail 5 is made of 8#-12# channel steel, and its length is the same as the height of the arched support base plate 2. The fit accuracy between the slider and the slide rail 5 is H8 / f7.

[0043] In some technical solutions, drive wheels 8 are installed at the four corners of the bottom of the support base plate 1, and brakes are provided on the drive wheels 8.

[0044] The drive wheels (8) use solid rubber tires with a diameter of 300-400mm and a width of 80-120mm, adaptable to different ground conditions, and possessing good load-bearing capacity and wear resistance. The braking system uses disc brakes with a disc diameter of 150-200mm and brake pads made of high-performance friction materials, achieving a braking response time of less than 0.5s, ensuring timely and reliable braking of the support frame during movement.

[0045] The drive wheels have 8 tires with a diameter of 300-400mm and a width of 80-120mm. The braking system has brake discs with a diameter of 150-200mm and a braking response time of less than 0.5s.

[0046] Working process and principle:

[0047] I. Overview of the Overall Work Process

[0048] The working process of a mobile arch bridge support frame mainly revolves around several core aspects: moving the support frame to a designated position, adjusting the overall height to initially adapt to the arch bridge, precisely adjusting the top support components to achieve tight support, and ensuring the stability and safety of the support through the coordinated action of various components during the support process. Its principle is to achieve stable support for the arch bridge through the rational design of the mechanical structure, the effective application of mechanical principles, and the functional coordination of various components.

[0049] II. Specific Working Process and Principles

[0050] (I) The process and principle of moving and positioning

[0051] When supporting an arch bridge, the first step is to move the easily movable arch bridge support frame to the designated working position. The drive wheels 8, installed at the four corners of the bottom of the load-bearing base plate 1, play a crucial role. These drive wheels 8 use solid rubber tires, offering excellent load-bearing capacity and wear resistance, adapting to various ground conditions. Operators can push the support frame, which moves easily under the rolling action of the drive wheels 8. Once in the appropriate position, the support frame is secured by a braking device on the drive wheels 8. The braking device uses disc brakes with a disc diameter of 150-200mm and high-performance friction materials for the brake pads. With a braking response time of less than 0.5s, it quickly generates braking force, reliably holding the support frame in the designated position and preventing movement during subsequent operations, thus laying the foundation for subsequent support work. The principle is to utilize the friction between the braking device and the drive wheels to overcome the tendency of the support frame to move, achieving positional fixation.

[0052] (II) The initial adjustment process and principle of the overall height

[0053] After the support frame is in place, the overall height needs to be initially adjusted according to the height of the arch bridge. The hydraulic cylinder 6, mounted on the outer wall of the arched support base plate 2 at the top of the bearing base plate 1, begins to operate. The hydraulic cylinder 6 is a multi-stage telescopic hydraulic cylinder with a rated pressure of 16-25 MPa. Oil is supplied to the hydraulic cylinder 6 through the hydraulic system, and the hydraulic oil pushes the piston inside the hydraulic cylinder 6, thereby driving the hydraulic telescopic rod 7 to extend or retract. The top of the hydraulic telescopic rod 7 is connected to the arched support top plate 3. As the hydraulic telescopic rod 7 extends and retracts, the arched support top plate 3 moves up and down accordingly, achieving overall height adjustment.

[0054] During the vertical movement of the arched support top plate 3, the slide rail 5 installed at the vertical end of the arched support bottom plate 2 and the inner wall of the arched support top plate 3 play a guiding role through the cooperation of the slider. The slide rail 5 is made of 8#-12# channel steel, and the fitting accuracy between the slider and the slide rail 5 is H8 / f7. This high-precision fit ensures the stability and accuracy of the arched support top plate 3 during movement, avoiding deviation or swaying. The principle is to utilize the characteristics of hydraulic transmission, which can transmit large forces and is easy to control. The hydraulic cylinder 6 converts hydraulic energy into mechanical energy to adjust the height of the arched support top plate 3; at the same time, the sliding cooperation between the slide rail and the slider restricts the movement trajectory of the arched support top plate 3, ensuring its stable movement.

[0055] (III) The process and principle of precise adjustment of the top support components

[0056] After the initial overall height adjustment is completed, the bottom surface of the arch bridge needs to be precisely supported by the top support assembly 10. The top of the arch support plate 3 is installed in the fixing groove 9 between two adjacent rubber protrusions 4. Each top support assembly 10 includes a threaded rod 11, a support cylinder 12 and a rubber pad 13.

[0057] The operator rotates the support cylinder 12. Because the internal thread 16 on the inner wall of the support cylinder 12 engages with the external thread of the threaded rod 11, and the pitch of the internal thread 16 is the same as that of the threaded rod 11 (2-3mm), with a thread accuracy grade of 6H, the support cylinder 12 can move up and down along the threaded rod 11 under the transmission action of the thread, thereby adjusting the distance between the rubber pad 13 on the top surface of the support cylinder 12 and the bottom surface of the arch bridge. The anti-slip texture on the outer wall of the support cylinder 12 increases the friction between the operator's hand and the support cylinder 12, facilitating the operator's rotation. The threaded rod 11 is made of 45# steel, heat-treated to a hardness of HRC28-32, providing sufficient strength to withstand pressure. The support cylinder 12 is made of 304 stainless steel, ensuring the smoothness and stability of the threaded connection. The principle is to utilize the helical transmission principle of the thread to convert the operator's rotational force into linear motion of the support cylinder 12, achieving precise adjustment of the support height.

[0058] Once the support cylinder 12 is adjusted to the appropriate height, and the rubber pad 13 contacts the bottom surface of the arch bridge, the limiting rods 14 installed on the left and right side walls of the support cylinder 12 begin to function to prevent accidental rotation during the support process. The helical teeth 15 on the inner wall of the limiting rod 14 mesh with the external thread of the threaded rod 11. The operator rotates the limiting rod 14 by adjusting the handle, causing the helical teeth 15 to tightly engage with the external thread of the threaded rod 11. This meshing force restricts the rotation of the support cylinder 12, ensuring the stability of the support height. The limiting rods 14 are made of 40Cr material, hardened and tempered to a hardness of HRC40-45, possessing good strength and wear resistance, and can reliably withstand the force generated during meshing.

[0059] (iv) Support, cushioning, and anti-slip process and principle

[0060] When the rubber pad 13 contacts the bottom surface of the arch bridge to provide support, the rubber pad 13 and the rubber ridge 4 work together to provide cushioning and anti-slip effects. The rubber pad 13 is made of nitrile rubber with a thickness of 8-12mm, which has good elasticity and can effectively cushion the supporting force, avoiding rigid impact on the bottom surface of the arch bridge and thus preventing damage. An arched elastic plate 21 is installed in the filling cavity 20 of the inner wall of the rubber pad 13. The arched elastic plate 21 is made of spring steel 65Mn with a thickness of 1-2mm and an elastic modulus between 190-210GPa. When the rubber pad 13 is subjected to the pressure of the arch bridge, the rubber pad 13 undergoes elastic deformation, and the arched elastic plate 21 also undergoes elastic deformation. The combined effect of the two further enhances the elasticity and cushioning capacity of the rubber pad 13 and disperses the supporting force. The protrusions 22 on the outer wall of the rubber pad 13 are 2-3 mm high, 5-8 mm in diameter, and 10-15 mm apart, increasing the friction between the rubber pad 13 and the bottom surface of the arch bridge. The rubber strips 4 installed on the outer surface of the arched support top plate 3 have a Shore hardness of 60-70 HA, a height of 15-20 mm, a width of 20-30 mm, and an adjacent spacing of 50-80 mm, also increasing the friction between the support frame and the bottom surface of the arch bridge, effectively preventing slippage during support. The principle is to utilize the elastic deformation of rubber and elastic steel to absorb impact force, and to increase friction by increasing the roughness of the contact surface, ensuring the stability and safety of the support.

[0061] (V) Sealing and Protection Process and Principle

[0062] During the adjustment and support of the support cylinder 12 along the threaded rod 11, the sealing assembly installed at the bottom opening inside the support cylinder 12 plays a crucial sealing and protective role. The sealing assembly includes rubber gaskets a19 and b17, which are fitted onto the outside of the threaded rod 11, with rubber blocks 18 evenly installed along their edges. Rubber gaskets a19 and b17 are made of EPDM rubber, exhibiting excellent aging resistance and a working temperature range of -40℃ to 120℃. They fit tightly between the threaded rod 11 and the support cylinder 12, effectively preventing dust and debris from entering the support cylinder 12. The rubber blocks 18 are made of neoprene rubber, possessing good wear resistance and tear resistance. They support the rubber gaskets a19 and b17, ensuring the gap and sealing effect between them. A sealing ring is installed in the sealing ring groove at the contact point between the sealing assembly and the support cylinder 12, further improving the sealing performance. The principle is that the tight contact between each component of the sealing assembly and the threaded rod 11 and the support cylinder 12 forms multiple sealing barriers, preventing external impurities from entering the interior of the support cylinder 12, avoiding impurities from affecting the threaded fit between the threaded rod 11 and the support cylinder 12, and ensuring smooth adjustment and service life of the structure.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A movable arch bridge support frame, comprising two parallel load-bearing base plates (1), characterized in that, An arched support base plate (2) is fitted at the upper end of the two bearing base plates (1), and an arched support top plate (3) is fitted at the top of the arched support base plate (2). The outer surface of the arched support top plate (3) is uniformly and equidistantly equipped with rubber protrusions (4). The top of the arched support top plate (3) is provided with a fixing groove (9) between two adjacent rubber protrusions (4). A top surface support component (10) is installed inside each fixing groove (9). The top support assembly (10) includes a threaded rod (11) installed in a fixed groove (9), the upper outer end of the threaded rod (11) being screwed to a support cylinder (12), and a rubber pad (13) being fitted on the top surface of the support cylinder (12).

2. The easily movable arch bridge support frame according to claim 1, characterized in that, The inner wall of the support cylinder (12) is provided with an internal thread (16), which is engaged with the external thread of the threaded rod (11). The support cylinder (12) is equipped with a sealing component at the bottom opening, and the sealing component is sleeved on the outside of the threaded rod (11).

3. The easily movable arch bridge support frame according to claim 2, characterized in that, The sealing assembly includes a rubber pad a (19) and a rubber pad b (17) sleeved on the outside of the threaded rod (11), and rubber blocks (18) are uniformly installed at the edges between the rubber pad a (19) and the rubber pad b (17).

4. The easily movable arch bridge support frame according to claim 1, characterized in that, Limiting rods (14) are installed on both the left and right side walls of the support cylinder (12). The inner wall of the limiting rod (14) is provided with helical teeth (15), and the helical teeth (15) mesh with the external thread of the threaded rod (11).

5. The easily movable arch bridge support frame according to claim 1, characterized in that, The inner wall of the rubber pad (13) is provided with a filling cavity (20), and an arched elastic plate (21) is installed inside the filling cavity (20). The outer wall of the rubber pad (13) is provided with a protrusion (22).

6. The easily movable arch bridge support frame according to claim 1, characterized in that, The top of the bearing base plate (1) is equipped with a hydraulic cylinder (6) on the outer wall of the arched support base plate (2). The driving end of the hydraulic cylinder (6) is equipped with a hydraulic telescopic rod (7). The top of the hydraulic telescopic rod (7) is connected to the arched support top plate (3). The vertical end of the arched support base plate (2) is equipped with a slide rail (5). The inner wall of the arched support top plate (3) is installed in the slide rail (5) by a slider.

7. The easily movable arch bridge support frame according to claim 1, characterized in that, The bottom of the supporting base plate (1) is equipped with drive wheels (8) at the four corners, and the drive wheels (8) are equipped with brakes.

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