Splicing structure for coping with thermal expansion and contraction of engineering material
By combining steel pipes and semi-rings, the axial and radial directions of the engineering materials can be flexibly adjusted under thermal expansion and contraction conditions, solving the structural deviation problem caused by thermal expansion and contraction and improving the stability and deformation resistance of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北工程技术学院
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, the expansion or contraction of engineering materials due to thermal expansion and contraction is rigidly constrained, leading to localized cracking, overall warping deformation, failure of connection nodes, or damage to support components, threatening the stability and safety of the project.
The system employs a combination structure of steel pipe and semi-ring, and through sliding connection and elastic adaptation mechanism, it achieves flexible axial and radial adjustment of the steel pipe, eliminates deviation, and enhances connection rigidity and stability.
It effectively eliminates axial installation deviation of steel pipes, improves the coaxiality and connection rigidity of the joint, enhances the deformation resistance of the joint, improves the radial stability of the pipeline under temperature alternation conditions, and prevents swaying and vibration.
Smart Images
Figure CN224497835U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of combined structure especially relates to a splicing structure for coping with thermal expansion and cold shrinkage of engineering materials. BACKGROUND
[0002] Thermal expansion and cold shrinkage of engineering materials refers to the inherent characteristic that its physical size expands with temperature rise and shrinks with temperature drop, which is caused by the change of thermal vibration amplitude of atoms or molecules in the material with temperature, resulting in the increase or decrease of average spacing, and the expansion or shrinkage of the material is constrained externally, which will generate huge temperature stress in the interior, leading to structural deformation, cracking, connection failure or damage, therefore, the splicing structure for coping with thermal expansion and cold shrinkage of engineering materials is used to solve the problem.
[0003] The splicing structure for coping with thermal expansion and cold shrinkage of engineering materials is mainly expansion joint or expansion joint, and its core principle is to set deformable gap units in continuous structure, and to absorb the expansion and contraction deformation of the material caused by temperature change through sliding members, so as to release internal stress, prevent the structure from cracking, extrusion damage or instability, ensure the safety and durability of engineering, and be widely used in bridges, pipelines, tracks and buildings, which is the key technical measure to realize the thermal deformation coordination of long-size components.
[0004] In the prior art, the structure lacks or is not reasonably set with splicing design for coping with thermal expansion and cold shrinkage, which will cause the expansion or shrinkage of the material due to temperature change to be rigidly constrained, thereby accumulating huge temperature stress in the interior, and this stress will cause local cracking of the structure, overall warping deformation, connection node failure or support component damage, which seriously threatens the stability and safety of engineering, therefore, the splicing structure for coping with thermal expansion and cold shrinkage of engineering materials is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a splicing structure for coping with thermal expansion and cold shrinkage of engineering materials, which aims to improve the problem that the structure lacks or is not reasonably set with splicing design for coping with thermal expansion and cold shrinkage in the prior art, which will cause the expansion or shrinkage of the material due to temperature change to be rigidly constrained.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A splicing structure for coping with thermal expansion and cold shrinkage of engineering materials, comprising a steel pipe one, the rear end of the steel pipe one is slidably connected with a steel pipe two, a connecting mechanism is installed on the outer side of the steel pipe one, and an adapting mechanism is installed on the outer side of the steel pipe one.
[0008] The connecting mechanism includes a semi-ring one, the inner side of which is installed on the outer side of the steel pipe one, a semi-ring two rotatably connected to the bottom end of the semi-ring one, a base plate fixedly connected to the top end of the semi-ring two, a shifting component rotatably connected to the inner side of the base plate, a hook rod fixedly connected to the outer side of the shifting component, and a sleeve plate slidably connected to the inner side of the hook rod.
[0009] As a further description of the above technical solution:
[0010] The adaptation mechanism includes an outer ring, the inner side of which is installed on the outer side of the steel pipe, a plurality of sliding blocks are slidably connected inside the outer ring, springs are slidably connected to the outer sides of the plurality of sliding blocks, and a groove is formed on the outer side of the outer ring.
[0011] As a further description of the above technical solution:
[0012] The displacement assembly includes a handle, the outer side of which is rotatably connected to the inner side of the base plate, and the inner side of which is rotatably connected to a rotating rod.
[0013] As a further description of the above technical solution:
[0014] The top end of the first semi-ring is fixedly connected to the bottom end of the sleeve plate, and the outer side of the first semi-ring is slidably connected to the outer side of the hook rod.
[0015] As a further description of the above technical solution:
[0016] The outer side of the rotating rod is fixedly connected to the rear end of the hook rod, and the outer side of the hook rod is in contact with the top end of the base plate;
[0017] As a further description of the above technical solution:
[0018] The outer ring is sleeved on the outer side of the spring, and the outer side of the spring is slidably connected to the inside of the groove;
[0019] As a further description of the above technical solution:
[0020] The outer ring has multiple limiting grooves inside, and the outer side of the sliding block is slidably connected to the inner side of the limiting grooves.
[0021] As a further description of the above technical solution:
[0022] The bottom end of the sliding block contacts the outer side of the first steel pipe, and the outer side of the first steel pipe is slidably connected to the inner side of the second semi-ring.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the hinged structure of half ring one and half ring two is used to drive the hook rod and sleeve plate to form a hook linkage by rotating the handle, so as to achieve the tight embrace of the ring body on steel pipe one and steel pipe two. This structure effectively eliminates the axial installation deviation of the steel pipe, improves the coaxiality of the docking and the rigidity of the connection, and is especially suitable for rapid on-site assembly and stress adjustment, and enhances the deformation resistance of the node.
[0025] 2. In this utility model, the combination of the outer ring and the sliding block utilizes the elasticity of the spring to achieve adaptive control of the radial deformation of the steel pipe under thermal expansion and contraction. When thermally expanding, the sliding block is compressed and moves outward and stores energy. When contracting, the spring releases the thrust to drive the sliding block to move inward to fill the gap, thus maintaining uniform constraint on the pipe body and improving the radial stability of the pipeline under temperature alternation conditions, preventing swaying and vibration. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a splicing structure for coping with the thermal expansion and contraction of engineering materials proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the steel pipe structure of the present invention, which is designed to accommodate the thermal expansion and contraction of engineering materials.
[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0030] Legend:
[0031] 1. Steel pipe one; 2. Steel pipe two;
[0032] 3. Connecting mechanism; 31. Half ring one; 32. Half ring two; 33. Base plate; 34. Hook rod; 35. Sleeve plate;
[0033] 36. Shifting assembly; 361. Handle; 362. Rotating rod;
[0034] 4. Adaptive mechanism; 41. Outer ring; 42. Sliding block; 43. Limiting groove; 44. Spring; 45. Groove. Detailed Implementation
[0035] 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.
[0036] Example:
[0037] A splicing structure to cope with the thermal expansion and contraction of engineering materials, referring to Figures 1 to 3 The structure includes steel pipe 1, which is one of the core load-bearing components of the splicing structure. Steel pipe 2 is slidably connected to the rear end of steel pipe 1. The sliding connection design between steel pipe 2 and steel pipe 1 allows them to move relative to each other along the axial direction when the temperature changes, avoiding damage to the components due to axial stress concentration. A connecting mechanism 3 is installed on the outside of steel pipe 1. The connecting mechanism 3 can firmly fix steel pipe 1 and steel pipe 2, and at the same time eliminate the axial offset after splicing, ensuring that the splicing part remains stable when the axial dimension changes. An adaptation mechanism 4 is installed on the outside of steel pipe 1. The adaptation mechanism 4 can dynamically adjust when steel pipe 1 is radially offset due to thermal expansion and contraction, maintaining the radial stability of steel pipe 1 and preventing it from deviating from the preset position.
[0038] Specifically, the rear end of steel pipe 1 and steel pipe 2 adopt a sliding fit. When temperature changes cause thermal expansion and contraction, the two can move flexibly relative to each other along the axial direction. This movement releases axial stress and prevents the components from being damaged due to stress concentration. Steel pipe 1 is equipped with a connecting mechanism 3 on the outside. Through the interlocking action between the components, steel pipe 1 and steel pipe 2 are firmly locked together, and the axial displacement after splicing is offset. Even if the axial dimension changes with temperature, the splicing part can always remain stable. In addition, the adaptation mechanism 4 on the outside of steel pipe 1 can correct the displacement in real time with the help of the linkage adjustment of the internal components when steel pipe 1 is radially displaced due to thermal expansion and contraction, so as to maintain the radial stability of steel pipe 1 and prevent it from deviating from the preset position.
[0039] The connecting mechanism 3 includes a semi-ring 31, the bottom of which is rotatably connected to a semi-ring 32. The semi-ring 31 and semi-ring 32 cooperate to form a ring-like clamping effect on steel pipes 1 and 2 from the outside, ensuring uniform force distribution at the splicing point. The inner side of the semi-ring 31 is installed on the outer side of steel pipe 1. This close fit between the inner side of the semi-ring 31 and the outer side of steel pipe 1 enhances the constraint force on steel pipe 1, preventing radial movement during splicing. The semi-ring 32, through its rotatable cooperation with the semi-ring 31, allows for quick wrapping and unwrapping of steel pipes 1 and 2, improving construction efficiency. A base plate 33 is fixedly connected to the top of the semi-ring 32. An inner rotating connection is provided with a displacement component 36, and an outer fixed connection is provided with a hook rod 34. The base plate 33 provides a stable installation foundation for the displacement component 36 and the hook rod 34, ensuring that the components do not shift under force during subsequent fixing operations. The displacement component 36 can drive the hook rod 34 to move by rotating itself, providing power for fixing half ring one 31 and half ring two 32. The inner side of the hook rod 34 is slidably connected with a sleeve plate 35. The hook rod 34 can tighten the top ends of half ring one 31 and half ring two 32 by cooperating with the sleeve plate 35, achieving tight fixing of the two. The sleeve plate 35 provides sliding guidance and limit for the hook rod 34, ensuring that the hook rod 34 can accurately connect and apply fixing force.
[0040] Specifically, the connecting mechanism 3 secures itself to the outside of steel pipe 1 by tightly fitting the inner side of semi-ring 31 against it, and then rotates semi-ring 32 to encircle the joint between steel pipe 1 and steel pipe 2 from below. This rotational cooperation quickly achieves a clamping grip, preventing uneven force distribution at the joint during manual alignment and reducing the risk of localized deformation. The close fit design of semi-ring 31 with the steel pipe prevents radial movement during pipe adjustment, eliminating the hassle of repeated calibration. The rotational characteristics of semi-ring 32 also facilitate subsequent maintenance and disassembly; reverse rotation allows for quick separation, compared to traditional bolts. The connection is more time-saving. The base plate 33 at the top of the second half ring 32 is the key stress point. When assembling the shifting component 36 and the hook rod 34, the base plate 33 can firmly support the parts and avoid misalignment due to shaking during operation. When fixing, rotating the shifting component 36 can drive the hook rod 34 to move towards the sleeve plate 35. After the hook rod 34 is put into the sleeve plate 35, it can continue to rotate to tighten the top of the first half ring 31 and the second half ring 32. The sleeve plate 35 can also guide the hook rod 34 to be accurately inserted without deviation, ensuring that the splice is firm and not easy to loosen due to vibration or temperature changes in the future.
[0041] The displacement assembly 36 includes a handle 361, the outer side of which is rotatably connected to the inner side of the base plate 33. This rotatable connection ensures stability during handle 361 rotation, preventing operational errors due to shaking. A rotating rod 362 is rotatably connected inside the handle 361, converting the rotation of the handle 361 into linear movement of the hook rod 34, effectively transmitting force. The top end of the semi-ring 31 is fixedly connected to the bottom end of the sleeve plate 35. This fixed connection ensures that the sleeve plate 35 moves synchronously with the semi-ring 31, guaranteeing accurate positioning. The outer side of the semi-ring 31 slides... The sliding connection between the semi-ring 31 and the hook rod 34, which is connected to the outside of the hook rod 34, allows the hook rod 34 to adjust its position along the outside of the semi-ring 31 during the fixing process, ensuring that the fixing force can be applied evenly. The outer side of the rotating rod 362 is fixedly connected to the rear end of the hook rod 34. The fixed connection between the rotating rod 362 and the hook rod 34 ensures that the rotating rod 362 rotates synchronously and drives the hook rod 34 to move, avoiding relative sliding between the two and affecting the fixing effect. The outer side of the hook rod 34 contacts the top of the base plate 33. The contact design between the hook rod 34 and the base plate 33 can support the hook rod 34 through the base plate 33 after fixing, preventing the hook rod 34 from deforming due to excessive force.
[0042] Specifically, the outer side of the handle 361 of the displacement component 36 is rotatably connected to the inner side of the base plate 33. When the handle 361 is rotated, it can prevent the handle 361 from shaking and prevent misalignment during fixing. The handle 361 is equipped with a rotating rod 362. When the handle 361 is rotated, the rotating rod 362 can convert the rotational action into the linear movement of the hook rod 34, so that the force can be accurately transmitted to the fixing part. The top of the semi-ring 31 is fixed to the bottom of the sleeve plate 35, which can ensure that the sleeve plate 35 moves synchronously with the semi-ring 31 and avoid the fixed position from shifting. The outer side of the semi-ring 31 slides with the hook rod 34, and the hook rod 34 moves flexibly along the outer side of the semi-ring 31 to ensure that the fixing force is applied evenly. The outer side of the rotating rod 362 is fixed to the rear end of the hook rod 34. When the rotating rod 362 rotates, it can drive the hook rod 34 to move synchronously without relative sliding affecting the fixing effect. The outer side of the hook rod 34 contacts the top of the base plate 33. After fixing, the base plate 33 can stably support the hook rod 34 to prevent it from deforming due to excessive force and ensure long-term stability.
[0043] Reference Figure 2 and Figure 4The adapting mechanism 4 includes an outer ring 41, with multiple sliding blocks 42 slidably connected inside the outer ring 41. The outer ring 41 serves as the outer frame of the adapting mechanism 4, connecting to external objects to provide stable support for the entire mechanism. The inner side of the outer ring 41 is installed on the outer side of the steel pipe 1. The installation method of the outer ring 41 and the inner side of the steel pipe 1 ensures that the outer ring 41 always forms a surrounding protection around the steel pipe 1, responding promptly to the radial displacement of the steel pipe 1. The multiple sliding blocks 42 can fit against the outer side of the steel pipe 1 from different directions, forming an all-round radial constraint to prevent the steel pipe 1 from shifting in a single direction. The outer side of the multiple sliding blocks 42 is slidably connected to a spring 44. The spring 44 can apply a reaction force to the sliding block 42 through its own elastic deformation, buffering the squeezing force when the steel pipe 1 expands thermally and pushing the sliding block 42 to fit against the steel pipe 1 when it contracts coldly. The outer side of the outer ring 41 has a groove 45, which provides storage space for the spring 44, preventing the spring 44 from shifting laterally during the extension and contraction process, and ensuring that the spring 44 always functions radially.
[0044] Specifically, the adapting mechanism 4 uses an outer ring 41 as an outer frame. After its inner side is installed on the outside of the steel pipe 1, it can be connected to external objects to provide stable support for the mechanism. At the same time, it always surrounds and protects the steel pipe 1 and responds to radial displacement in a timely manner. The outer ring 41 is equipped with multiple sliding blocks 42. These sliding blocks 42 can fit against the outside of the steel pipe 1 from different directions to form an all-round radial constraint and prevent the steel pipe from shifting in a single direction. The outer side of the sliding block 42 is connected to a spring 44. When the steel pipe 1 expands thermally, it will squeeze the sliding block 42. The spring 44 will buffer the squeezing force through elastic deformation. When it contracts coldly, the spring 44 can push the sliding block 42 to fit against the steel pipe and maintain stability. The outer side of the outer ring 41 has a groove 45 to house the spring 44 and prevent the spring 44 from shifting laterally when it extends and retracts, ensuring that it always exerts force radially and ensuring that the adapting mechanism 4 continues to function in temperature changes.
[0045] The outer ring 41 is sleeved on the outer side of the spring 44. The sleeved design of the outer ring 41 on the spring 44 can protect the spring 44 and prevent external impurities from affecting the elastic performance of the spring 44. The outer side of the spring 44 is slidably connected to the inside of the groove 45. The slidable connection between the spring 44 and the groove 45 can guide the spring 44 to extend and retract along the direction of the groove 45, ensuring that the force of the spring 44 is accurately applied to the sliding block 42. The outer ring 41 has multiple limiting grooves 43 inside. The limiting grooves 43 can restrict the movement direction of the sliding block 42, ensuring that the sliding block 42 only moves radially, avoiding its deflection and affecting the stability of the steel pipe 1. The outer side of the sliding block 42 is slidably connected to the inside of the limiting groove 43.
[0046] Specifically, the outer ring 41 is sleeved on the outside of the spring 44, and the outer side of the spring 44 is slidably connected to the groove 45, which can guide the spring 44 to extend and retract along the direction of the groove 45, ensuring that the force is accurately applied to the sliding block 42. The outer ring 41 has multiple limiting grooves 43 inside, and the outer side of the sliding block 42 is slidably engaged with the limiting grooves 43. The limiting grooves 43 can restrict the movement direction of the sliding block 42, so that it only moves radially, avoiding deflection that affects the stability of the steel pipe 1.
[0047] The sliding engagement between the sliding block 42 and the limiting groove 43 ensures that the sliding block 42 remains stable during movement and does not deviate from the preset trajectory. The bottom end of the sliding block 42 contacts the outer side of the steel pipe 1. The contact design between the sliding block 42 and the steel pipe 1 allows the sliding block 42 to sense the radial dimension change of the steel pipe 1 in real time and make timely expansion and contraction adjustments. The outer side of the steel pipe 1 is slidably connected to the inner side of the semi-ring 2 32. The sliding connection between the steel pipe 1 and the semi-ring 2 32 can provide a certain amount of room for movement when the steel pipe 1 undergoes axial or radial displacement, avoiding excessive constraint of the semi-ring 2 32 on the steel pipe 1, which may lead to component damage.
[0048] Specifically, the sliding block 42 and the limiting groove 43 slide together to ensure that the sliding block 42 remains stable during movement and does not deviate from the preset trajectory. The bottom end of the sliding block 42 contacts the outer side of the steel pipe 1, allowing the sliding block 42 to sense changes in the radial dimension of the steel pipe in real time and adjust its extension and retraction accordingly. The outer side of the steel pipe 1 slides and connects with the inner side of the semi-ring 2 32, providing room for movement when the steel pipe deviates axially or radially, thus preventing damage to the steel pipe due to excessive constraint of the semi-ring 2 32.
[0049] The implementation principle of this application embodiment is as follows: When steel pipe 1 and steel pipe 2 need to be spliced, steel pipe 1 and steel pipe 2 are sandwiched in the middle by twisting half ring 31 and half ring 2 32, so that the inner sides of half ring 31 and half ring 2 32 are in contact with steel pipe 1 and steel pipe 2. Rotate handle 361 to move hook rod 34 towards sleeve plate 35. At this time, after hook rod 34 is sleeved on the inner side of sleeve plate 35, rotate handle 361 away from sleeve plate 35. Through rotating rod 362, hook rod 34 is driven to move towards handle 361. Finally, handle 361 is in contact with base plate 33, which fixes half ring 1 31 and half ring 2 32 and eliminates axial displacement.
[0050] Due to weather conditions, engineering materials will expand and contract with temperature. After the axial offset is resolved by splicing the engineering materials together through the connecting mechanism 3, the outer side of steel pipe 1 will shift radially due to thermal expansion and contraction. At this time, the outer ring 41 is used to connect with external objects to stabilize steel pipe 1. When thermal expansion and contraction occur, the outer side of steel pipe 1 will shift radially. When thermally expanded, it will have a squeezing effect on the multiple sliding blocks 42 attached to the outer side, which will push the sliding blocks 42 to move outward. Finally, it will be counteracted by the spring 44 to prevent deviation. When contracting, the spring 44 will drive the sliding blocks 42 to move inward, stabilizing steel pipe 1.
[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A splicing structure for coping with the thermal expansion and contraction of engineering materials, comprising a steel pipe (1), characterized in that: The rear end of the first steel pipe (1) is slidably connected to the second steel pipe (2), a connecting mechanism (3) is installed on the outside of the first steel pipe (1), and an adapting mechanism (4) is installed on the outside of the first steel pipe (1). The connecting mechanism (3) includes a semi-ring one (31), the inner side of which is installed on the outer side of the steel pipe one (1), the bottom end of which is rotatably connected to a semi-ring two (32), the top end of which is fixedly connected to a base plate (33), the inner side of which is rotatably connected to a shifting component (36), the outer side of which is fixedly connected to a hook rod (34), and the inner side of which is slidably connected to a sleeve plate (35).
2. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 1, characterized in that: The adaptation mechanism (4) includes an outer ring (41), the inner side of which is installed on the outer side of the steel pipe (1), a plurality of sliding blocks (42) are slidably connected inside the outer ring (41), a spring (44) is slidably connected to the outer side of the plurality of sliding blocks (42), and a groove (45) is provided on the outer side of the outer ring (41).
3. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 1, characterized in that: The shifting assembly (36) includes a handle (361), the outer side of which is rotatably connected to the inner side of the base plate (33), and a rotating rod (362) is rotatably connected to the inside of the handle (361).
4. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 1, characterized in that: The top end of the semi-ring (31) is fixedly connected to the bottom end of the sleeve (35), and the outer side of the semi-ring (31) is slidably connected to the outer side of the hook rod (34).
5. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 3, characterized in that: The outer side of the rotating rod (362) is fixedly connected to the rear end of the hook rod (34), and the outer side of the hook rod (34) is in contact with the top end of the base plate (33).
6. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 2, characterized in that: The outer ring (41) is sleeved on the outer side of the spring (44), and the outer side of the spring (44) is slidably connected to the inside of the groove (45).
7. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 2, characterized in that: The outer ring (41) has multiple limiting grooves (43) inside, and the outer side of the sliding block (42) is slidably connected to the inner side of the limiting grooves (43).
8. The splicing structure for coping with the thermal expansion and contraction of engineering materials according to claim 2, characterized in that: The bottom end of the sliding block (42) is in contact with the outer side of the first steel pipe (1), and the outer side of the first steel pipe (1) is slidably connected to the inner side of the second semi-ring (32).