Embedded corrugated pipe connecting structure and method for tower limbs of cable bent tower

Abstract

The invention provides a cable bent tower limb embedded corrugated pipe connecting structure and method, and belongs to the technical field of buildings. Comprising a fixing ring and further comprises a fixing assembly, the fixing ring is sleeved with the fixing assembly, the bottom of the fixing assembly is connected with a flaring assembly, and the fixing assembly is used for fixing the flaring assembly. One end of the flaring assembly is arranged in one end of the prestressed corrugated pipe sleeve in a sleeved mode, the supporting rod is held by hand to pull the fixing plate, the supporting blocks and the rubber sealing gasket to the outer end, the six supporting blocks are clamped with one another to form a cylinder, and in the process that the supporting blocks move to the outer end, the six supporting blocks synchronously move to the outer end to enlarge the inner diameter of the supporting blocks; meanwhile, the inner diameter of one end of the metal corrugated pipe is enlarged, and in the process of pulling the fixing plate, the elastic clamping blocks sequentially penetrate through the holes and are clamped to the outer portion of the fixing ring, so that the supporting blocks and the corrugated pipe are fixed, it can be avoided that a cutter is held by hand to cut the corrugated pipe, the safety of operators is improved, and meanwhile the butt joint efficiency of the prestressed corrugated pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a pre-buried corrugated pipe connection structure for a tower limb and a connection method. Background Art

[0002] The construction of the tie beams under the tower limbs and columns of the space tower has certain difficulties in terms of high support system, space cross-dense steel bars, high vertical formwork, large-volume concrete, bidirectional prestressed construction and tower limb stress control. The tie beams under the tower limbs of the space tower and the corresponding tower limbs are cast in one go in the height direction, and cast in four "L-shaped" areas in the horizontal direction, with a 2m post-casting section reserved in the middle of the span for joint construction. Prestressed corrugated pipes need to be embedded in the main body binding process of the main tower joint casting. However, in order to meet the transportation requirements, the length of existing corrugated pipes is usually limited, which cannot meet the length of the prestressed corrugated pipes embedded in the main tower joint. Therefore, multiple corrugated pipes need to be connected in the process of pre-embedded prestressed corrugated pipes. The existing prestressed corrugated pipe connection is mostly done by manually holding a cutting knife to open the outer wall of one end of the corrugated pipe casing to expand the inner diameter of one end of the casing, and then the casing is inserted into it, and the connection is sealed with the help of tape to achieve the connection of the prestressed corrugated pipes. The following website for prestressed corrugated pipe connection is: https: / / www.i xi gua.com / 6989592718448001567. In this process, a manual hand-held cutting knife is required to cut the metal corrugated pipe, which poses a certain risk to the operator and reduces the efficiency of corrugated pipe connection, thereby affecting the efficiency of pre-embedding of the prestressed corrugated pipe. Therefore, the present application provides a pre-embedded corrugated pipe connection structure and connection method for the tower limbs to meet the needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pre-buried corrugated pipe connection structure and connection method for a cable tower limb to solve the problem that the existing prestressed corrugated pipe connection is mostly done by manually holding a cutting knife, opening the outer wall of one end of the corrugated pipe sleeve to expand the inner diameter of one end of the sleeve, and then inserting the sleeve into it, and sealing the connection with the help of tape. In this process, a manual hand-held cutting knife is required to cut the metal corrugated pipe, which poses a certain risk to the operator and reduces the efficiency of corrugated pipe connection.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A pre-buried bellows connection structure for a pylon limb includes a fixing ring, and also includes: a fixing component, which is sleeved on the outside of the fixing ring and is connected to a flaring component at the bottom, the fixing component is used to fix the flaring component, the flaring component is used to expand the inner diameter of the prestressed bellows, and the fixing ring is provided with a hole for the fixing component to move; a receiving component, which is slidably connected to the inner wall of the flaring component to receive the covered bellows; a clamping component, which is arranged on the inner wall of the receiving component, and the covered bellows is fixed to the inner wall of the receiving component by the clamping component; wherein the fixing component includes a fixing plate sleeved in the hole of the fixing ring, and is arranged on both sides of the fixing plate to limit the fixing An elastic clamping block is positioned between the fixed plate and the fixed ring, a fixed rod fixed to the top of the fixed plate, a support rod sleeved on the outside of the fixed rod for pulling the fixed plate, a first spring connected between the support rod and the fixed ring, a first clamping block hinged to the side of the fixed ring, and a protrusion arranged at the bottom of the first clamping block for improving the contact stability with the outer wall of the corrugated pipe; the flaring assembly includes a support block connected to one end of the fixed plate for expanding the inner diameter of the prestressed corrugated pipe, a rubber sealing ring arranged on the inner wall of the support block and consistent with the shape of the support block, and a rubber sealing pad installed on the outer wall of the support block; there are six support blocks, which are movably connected to each other to form a circular ring.

[0006] Optionally, the support block is sleeved inside one end of the prestressed bellows, and pulling the fixing plate toward the outer end drives the support block to move toward the outer end, thereby simultaneously expanding the inner diameter of one end of the prestressed bellows.

[0007] Optionally, the width of the hole is greater than the thickness of the fixing plate, and the elastic clamping block is in an "eight" shape;

[0008] The fixing plate moves upward in the hole, and the elastic clamping blocks enter the holes in sequence and penetrate through the holes to be located outside the fixing ring, thereby fixing the fixing plate and the fixing ring.

[0009] Optionally, the support block drives the bellows to expand its inner diameter so that the prestressed bellows is located between the fixing ring and the support block. The support rod is loosened and one end of the first spring is pulled downward under the action of the first spring. The first spring slides outside the fixing rod in an inclined state, and one end of the first spring pushes the first clamping block downward so that the protrusion contacts the outer wall of the bellows.

[0010] Optionally, the receiving assembly includes a slider slidably engaged with the inner wall of the support block, a spring telescopic rod connected to the bottom of the slider, a receiving block connected to the bottom of the spring telescopic rod, and a limiting plate fixed to one end of the receiving block; the number of the receiving blocks is six and they are movably engaged with each other to form a ring.

[0011] Optionally, during the process of the support block expanding its inner diameter, the slider and the spring telescopic rod drive the receiving block to expand its inner diameter synchronously.

[0012] Optionally, the clamping assembly includes a connecting rod sleeved on one end of the receiving block, a guide block and a second clamping block connected to the top and bottom of the connecting rod, and a second spring connected between the guide block and the receiving block.

[0013] Optionally, a guide groove for sliding of the slider is provided on the inner wall of the support block, a groove is provided on the outside of the connecting rod, and the thickness of one end of the support block is smaller than the thickness of the other end; the quilted bellows is sleeved inside the receiving block and one end is located in the groove outside the connecting rod, pushing the quilted bellows and the receiving block to shrink into the support block, thereby realizing the docking of the bellows.

[0014] Optionally, the receiving block shrinks into the supporting block, and under the guidance of the rubber sealing ring, the receiving block shrinks the inner diameter to clamp the covered corrugated tube.

[0015] The present invention also provides a method for connecting a tower limb pre-buried corrugated pipe connection structure, comprising the following steps:

[0016] S1. Sleeve one end of the flaring assembly into one end of the prestressed bellows casing, hold the support rod to pull the fixing plate, support block and rubber sealing pad toward the outer end, so that the six support blocks move toward the outer end synchronously to expand the inner diameter, and at the same time expand the inner diameter of one end of the bellows;

[0017] S2, the inner diameter of one end of the bellows gradually expands and contacts the inner wall of the fixing ring. In the process of pulling the fixing plate, the elastic clamping block passes through the holes in sequence and is clamped on the outside of the fixing ring, thereby fixing the support block and the bellows. Under the action of the tension of the first spring, one end of the support rod is pulled downward, and the support rod slides toward one end with the fixing rod as the central axis, so that it is inclined, and one end of the support rod contacts the top of the first clamping block, and exerts downward pressure under the action of the first spring, and contacts the outside of the bellows through the convex block;

[0018] S3, during the movement of the support block toward the outer end, the slider and the spring telescopic rod drive the receiving block and the limit plate to move toward the outer end synchronously to expand the inner diameter, so that one end of the sleeved bellows can be sleeved on the inner wall of the receiving block, and one end is in contact with the outer groove of the connecting rod, pushing the sleeved bellows to drive the receiving block to shrink into the support block. At the same time, under the guidance of the rubber sealing ring, the receiving block moves toward the middle, reducing its inner diameter and stretching the spring telescopic rod, so that the internal bellows is clamped by the receiving block;

[0019] S4. At the same time, the guide block, the connecting rod and the second clamping block are located on the other side through the inner wall of the rubber sealing ring. Since the thickness of one end of the support block is smaller than the thickness of the other end, the second spring resets and pushes the guide block, the connecting rod and the second clamping block respectively, so that the guide block contacts the inner wall of the support block, and the second clamping block clamps the corrugated tube on the inner wall of the receiving block. The corrugated tube is fixed to the inner wall of the receiving block through the second clamping block, and the receiving block is located in the support block under the limit of the guide block, and the support block and the receiving block are sealed by the rubber sealing ring.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] In the above scheme, one end of the flaring component is sleeved into one end of the prestressed bellows casing, and the holding support rod is used to pull the fixing plate, the support block and the rubber sealing gasket toward the outer end. Since there are six support blocks and they are mutually clamped to form a cylinder, during the movement of the support blocks toward the outer end, the six support blocks are synchronously moved toward the outer end to expand their inner diameters, and at the same time, the inner diameter of one end of the metal bellows is expanded. During the pulling of the fixing plate, the elastic clamping blocks pass through the holes in turn and are clamped to the outside of the fixing ring, thereby fixing the support blocks and the bellows, thereby avoiding cutting by a handheld cutting knife, improving the safety of the operator, and improving the docking efficiency of the prestressed bellows.

[0022] By sleeveing ​​one end of the covered corrugated pipe in the receiving block, the other end contacts the external groove of the connecting rod, and pushes the receiving block to move into the supporting block. During the movement, the receiving block is guided by the rubber sealing ring and moves toward the middle to make the inner wall of the receiving block contact with the outer wall of the covered corrugated pipe. At the same time, the guide block passes through the rubber sealing ring and is located on one side of the rubber sealing ring. The second spring resets and pulls the second clamping block to clamp the corrugated pipe to the inner wall of the receiving block. At the same time, the receiving block is located in the supporting block under the limit of the guide block, so that the bellows are docked, thereby ensuring the stability of the docking of the prestressed corrugated pipes.

[0023] By sleeve-mounting the sleeved bellows on the inner wall of the receiving block and pushing the receiving block to move into the supporting block, the inner wall of the receiving block contacts the inner wall of the rubber sealing ring during the movement. Since the rubber sealing rings are mutually clamped, the rubber sealing ring is used to seal between the supporting block and the receiving block, and then the joint of the bellows is sealed, thereby ensuring the sealing of the joint of the prestressed bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of a tower limb pre-buried corrugated pipe connection structure and connection method;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the receiving component and the flaring component;

[0027] Figure 3 A schematic diagram of a cross-sectional three-dimensional structure of a tower limb pre-buried corrugated pipe connection structure and a connection method;

[0028] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0029] Figure 5 It is a schematic diagram of a three-dimensional enlarged cross-section of the expansion component;

[0030] Figure 6 It is a three-dimensional enlarged structural schematic diagram of the limit component;

[0031] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of the receiving component;

[0032] Figure 8 It is a schematic diagram of the exploded three-dimensional structure of the receiving component and the clamping component;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the flared component.

[0034] [reference numerals]

[0035] 100, fixing ring; 200, receiving assembly; 201, receiving block; 202, limiting plate; 203, spring telescopic rod; 204, sliding block; 300, flaring assembly; 301, supporting block; 302, rubber sealing pad; 303, rubber sealing ring; 400, fixing assembly; 401, fixing plate; 402, elastic block; 403, fixing rod; 404, supporting rod; 405, first clamping block; 406, protrusion; 407, first spring; 500, clamping assembly; 501, guide block; 502, connecting rod; 503, second clamping block; 504, second spring.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] The following is a detailed description of a pre-buried bellows connection structure and connection method for a tower limb provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0038] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0039] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0040] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0041] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0042] like Figure 1 and Fig. 9As shown, an embodiment of the present invention provides a pre-buried bellows connection structure for a pylon limb, comprising a fixing ring 100, and a fixing assembly 400, which is sleeved on the outside of the fixing ring 100 and is connected to a flaring assembly 300 at the bottom, the fixing assembly 400 is used to fix the flaring assembly 300, the flaring assembly 300 is used to expand the inner diameter of the prestressed bellows, and a hole for the fixing assembly 400 to move is opened on the outside of the fixing ring 100; a receiving assembly 200, which is slidably connected to the inner wall of the flaring assembly 300 to receive the covered bellows; a clamping assembly 500, which is arranged on the inner wall of the receiving assembly 200, and the covered bellows is fixed to the inner wall of the receiving assembly 200 by the clamping assembly 500; wherein the fixing assembly 400 includes a fixing plate 401 sleeved in the hole of the fixing ring 100, and is arranged on both sides of the fixing plate 401 for limiting An elastic clamping block 402 is positioned between the fixing plate 401 and the fixing ring 100, a fixing rod 403 fixed to the top of the fixing plate 401, a support rod 404 is sleeved on the outside of the fixing rod 403 to facilitate pulling the fixing plate 401, a first spring 407 is connected between the support rod 404 and the fixing ring 100, a first clamping block 405 is hinged to the side of the fixing ring 100, and a protrusion 406 is arranged at the bottom of the first clamping block 405 to improve the contact stability with the outer wall of the corrugated pipe; the expansion assembly 300 includes a support block 301 connected to one end of the fixing plate 401 for expanding the inner diameter of the prestressed corrugated pipe, a rubber sealing ring 303 arranged on the inner wall of the support block 301 and consistent with the shape thereof, and a rubber sealing pad 302 installed on the outer wall of the support block 301; there are six support blocks 301 which are movably connected to each other to form a circular ring.

[0043] The support block 301 is sleeved inside one end of the prestressed bellows, and pulling the fixed plate 401 toward the outside drives the support block 301 to move toward the outside, thereby simultaneously expanding the inner diameter of one end of the prestressed bellows; the width of the hole is greater than the thickness of the fixed plate 401, and the elastic clamping block 402 is in an "eight" shape; the fixed plate 401 moves upward in the hole, and the elastic clamping block 402 enters the hole in turn and passes through the hole to be located outside the fixed ring 100, thereby fixing the fixed plate 401 and the fixed ring 100.

[0044] The support block 301 drives the bellows to expand its inner diameter, so that the prestressed bellows is located between the fixing ring 100 and the support block 301. The support rod 404 is loosened and one end of the first spring 407 is pulled downward under the action of the first spring 407. The first spring 407 slides on the outside of the fixing rod 403 in an inclined state, and one end of the first spring 407 pushes the first clamping block 405 downward, so that the protrusion 406 contacts the outer wall of the bellows.

[0045] The six support blocks 301 are sleeved inside one end of the prestressed bellows, and the fixing plate 401, the support block 301 and the rubber sealing gasket 302 are pulled outward. Since there are six support blocks 301 and they are mutually clamped to form a cylinder, during the movement of the support block 301 toward the outer end, the six support blocks 301 are synchronously moved outward to expand their inner diameters, and the inner diameter of one end of the bellows is expanded at the same time. After the prestressed bellows is expanded, the surface corrugations are stretched to form a complete ring, and the inner diameter of one end of the bellows is gradually expanded to contact the inner wall of the fixing ring 100. During the pulling of the fixing plate 401, the elastic clamping block 402 passes through the holes in turn and is clamped to the outside of the fixing ring 100, thereby clamping the support block 301. It is fixed to the bellows, and the support rod 404 moves up to stretch the first spring 407. After the inner diameter of the bellows is expanded, one end of the support rod 404 is pulled downward under the action of the pulling force of the first spring 407. The support rod 404 slides at one end with the fixed rod 403 as the central axis, making it inclined, and one end of the support rod 404 contacts the top of the first clamping block 405, and exerts downward pressure under the action of the first spring 407, and contacts the outside of the bellows through the protrusion 406, thereby improving the stability between the bellows and the support block 301, and expanding the inner diameter of the bellows through the support block 301, avoiding manual opening of the bellows with a hand-held cutting knife, and improving the safety of the operator.

[0046] like Figures 1 to 7 As shown, the receiving assembly 200 includes a slider 204 slidably engaged with the inner wall of the support block 301, a spring telescopic rod 203 connected to the bottom of the slider 204, a receiving block 201 connected to the bottom of the spring telescopic rod 203, and a limit plate 202 fixed to one end of the receiving block 201; there are six receiving blocks 201 and they are movably engaged with each other to form a ring. When the supporting block 301 expands its inner diameter, the slider 204 and the spring telescopic rod 203 drive the receiving block 201 to expand its inner diameter synchronously. In the process of expanding the inner diameter of the support block 301, the slider 204 and the spring telescopic rod 203 drive the six receiving blocks 201 to expand the inner diameter synchronously. After the support block 301 drives the inner diameter of the prestressed bellows to expand, the inner diameter of the receiving block 201 will be larger than the outer diameter of the sheathed bellows, and the sheathed bellows can be sleeved inside the receiving block 201. The prestressed bellows can be docked by pushing the sheathed bellows and the receiving block 201 to shrink into the support block 301.

[0047] like Figures 3 to 9As shown, the clamping assembly 500 includes a connecting rod 502 sleeved on one end of the receiving block 201, a guide block 501 and a second clamping block 503 connected to the top and bottom of the connecting rod 502, and a second spring 504 connected between the guide block 501 and the receiving block 201; the inner wall of the support block 301 is provided with a guide groove for the sliding block 204 to slide, and the outside of the connecting rod 502 is provided with a groove, and the thickness of one end of the support block 301 is less than the thickness of the other end; the sheathed bellows is sleeved inside the receiving block 201 and one end is located at the outer groove of the connecting rod 502, pushing the sheathed bellows and the receiving block 201 to shrink into the support block 301, so as to achieve the docking of the bellows; the receiving block 201 shrinks into the support block 301, and the receiving block 201 shrinks the inner diameter under the guidance of the rubber sealing ring 303 to clamp the sheathed bellows.

[0048] By sleeve-fitting one end of the sleeved bellows on the inner wall of the receiving block 201 and contacting one end with the outer groove of the connecting rod 502, the sleeved bellows is pushed to drive the receiving block 201 to shrink into the supporting block 301. During the pushing process, the guide block 501, the connecting rod 502 and the second clamping block 503 are located on the other side through the inner wall of the rubber sealing ring 303. Since the thickness of one end of the supporting block 301 is smaller than that of the other end, the second spring 504 is reset to push the guide block 501 and the connecting rod 502 to shrink. 01. The connecting rod 502 and the second clamping block 503 make the guide block 501 contact with the inner wall of the support block 301, and the second clamping block 503 will clamp the corrugated tube on the inner wall of the receiving block 201. The corrugated tube is fixed to the inner wall of the receiving block 201 by the second clamping block 503, and the receiving block 201 is located in the support block 301 under the limit of the guide block 501, and the support block 301 and the receiving block 201 are sealed by the rubber sealing ring 303.

[0049] The present invention also provides a method for connecting a tower limb pre-buried corrugated pipe connection structure, comprising the following steps:

[0050] S1. Sleeve one end of the flaring assembly 300 into one end of the prestressed bellows sleeve, hold the support rod 404 to pull the fixing plate 401, the support block 301 and the rubber sealing gasket 302 toward the outer end. Since there are six support blocks 301 that are mutually clamped and form a cylinder, when the support block 301 moves toward the outer end, the six support blocks 301 move toward the outer end synchronously to expand their inner diameters, and at the same time expand the inner diameter of one end of the bellows;

[0051] S2, the inner diameter of one end of the bellows gradually expands and contacts the inner wall of the fixing ring 100. In the process of pulling the fixing plate 401, the elastic clamping block 402 passes through the holes in turn and is clamped on the outside of the fixing ring 100, thereby fixing the support block 301 and the bellows, and the support rod 404 moves upward to stretch the first spring 407. After the inner diameter of the bellows is expanded, under the action of the pulling force of the first spring 407, one end of the support rod 404 is pulled downward, and the support rod 404 slides at one end with the fixing rod 403 as the central axis, making it inclined, and one end of the support rod 404 contacts the top of the first clamping block 405, and exerts downward pressure under the action of the first spring 407, and contacts the outside of the bellows through the protrusion 406, thereby improving the stability between the bellows and the support block 301;

[0052] S3, during the movement of the support block 301 toward the outer end, the slider 204 and the spring telescopic rod 203 drive the receiving block 201 and the limit plate 202 to move toward the outer end synchronously to expand the inner diameter, so that one end of the sleeved bellows can be sleeved on the inner wall of the receiving block 201, and one end is in contact with the outer groove of the connecting rod 502, and at the same time, the sleeved bellows is pushed to drive the receiving block 201 to shrink into the support block 301, driving the slider 204 to slide in the guide groove, and at the same time, the receiving block 201 is guided by the rubber sealing ring 303, and its inner diameter is reduced to stretch the spring telescopic rod 203, so that the internal bellows is clamped by the receiving block 201;

[0053] S4. At the same time, the guide block 501, the connecting rod 502 and the second clamping block 503 are located on the other side through the inner wall of the rubber sealing ring 303. Since the thickness of one end of the support block 301 is smaller than the thickness of the other end, the second spring 504 is reset and pushes the guide block 501, the connecting rod 502 and the second clamping block 503 respectively, so that the guide block 501 contacts the inner wall of the support block 301, and the second clamping block 503 clamps the corrugated tube on the inner wall of the receiving block 201. The corrugated tube is fixed to the inner wall of the receiving block 201 through the second clamping block 503, and the receiving block 201 is located in the support block 301 under the limit of the guide block 501, and the support block 301 and the receiving block 201 are sealed by the rubber sealing ring 303.

[0054] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tower limb pre-buried corrugated pipe connection structure, characterized in that: Including the retaining ring, it also includes: A fixing assembly is sleeved on the outside of the fixing ring and connected to a flaring assembly at the bottom. The fixing assembly is used to fix the flaring assembly, and the flaring assembly is used to expand the inner diameter of the prestressed corrugated pipe. A hole is opened on the outside of the fixing ring for the fixing assembly to move; A receiving assembly, which is slidably connected to the inner wall of the flaring assembly and is used to receive the covered corrugated pipe; A clamping assembly, which is arranged on the inner wall of the receiving assembly, and the sleeved corrugated pipe is fixed to the inner wall of the receiving assembly through the clamping assembly; The fixing assembly includes a fixing plate sleeved in the hole of the fixing ring, elastic clamps arranged on both sides of the fixing plate for limiting the position between the fixing plate and the fixing ring, a fixing rod fixed to the top of the fixing plate, a support rod sleeved outside the fixing rod for pulling the fixing plate, a first spring connected between the support rod and the fixing ring, a first clamping block hinged to the side of the fixing ring, and a convex block arranged at the bottom of the first clamping block for improving the contact stability with the outer wall of the corrugated pipe; The expansion assembly includes a support block connected to one end of the fixing plate for expanding the inner diameter of the prestressed bellows, a rubber sealing ring arranged on the inner wall of the support block and having the same shape as the support block, and a rubber sealing pad installed on the outer wall of the support block; There are six supporting blocks which are movably engaged with each other to form a ring.

2. The tower limb pre-buried corrugated pipe connection structure according to claim 1 is characterized in that: The support block is sleeved inside one end of the prestressed corrugated pipe, and the fixing plate is pulled toward the outer end to drive the support block to move toward the outer end, thereby simultaneously expanding the inner diameter of one end of the prestressed corrugated pipe.

3. The tower limb pre-buried corrugated pipe connection structure according to claim 2 is characterized in that: The width of the hole is greater than the thickness of the fixing plate, and the elastic clamping block is in an "eight" shape; The fixing plate moves upward in the hole, and the elastic clamping blocks enter the holes in sequence and penetrate through the holes to be located outside the fixing ring, thereby fixing the fixing plate and the fixing ring.

4. The tower limb pre-buried corrugated pipe connection structure according to claim 3 is characterized in that: The support block drives the bellows to expand its inner diameter, so that the prestressed bellows is located between the fixing ring and the support block. The support rod is loosened and one end of the first spring is pulled downward under the action of the first spring. The first spring slides outside the fixing rod in an inclined state, and one end of the first spring pushes the first clamping block downward, so that the protrusion contacts the outer wall of the bellows.

5. The tower limb pre-buried corrugated pipe connection structure according to claim 1 is characterized in that: The receiving assembly includes a slider slidably connected to the inner wall of the support block, a spring telescopic rod connected to the bottom of the slider, a receiving block connected to the bottom of the spring telescopic rod, and a limit plate fixed to one end of the receiving block; The number of the receiving blocks is six and they are movably connected to each other to form a ring.

6. The tower limb pre-buried corrugated pipe connection structure according to claim 5 is characterized in that: During the process of the support block expanding its inner diameter, the slider and the spring telescopic rod drive the receiving block to expand its inner diameter synchronously.

7. The tower limb pre-buried corrugated pipe connection structure according to claim 6 is characterized in that: The clamping assembly includes a connecting rod sleeved on one end of the receiving block, a guide block and a second clamping block connected to the top and bottom of the connecting rod, and a second spring connected between the guide block and the receiving block.

8. The tower limb pre-buried corrugated pipe connection structure according to claim 7, characterized in that: The inner wall of the support block is provided with a guide groove for sliding of the slider, the outer surface of the connecting rod is provided with a groove, and the thickness of one end of the support block is smaller than the thickness of the other end; The covered bellows is sleeved inside the receiving block and one end is located at the outer groove of the connecting rod, pushing the covered bellows and the receiving block to shrink into the supporting block to achieve the bellows docking.

9. The tower limb pre-buried corrugated pipe connection structure according to claim 8, characterized in that: The receiving block is retracted into the supporting block, and under the guidance of the rubber sealing ring, the receiving block shrinks the inner diameter to clamp the covered corrugated pipe.

10. A method for connecting a tower limb pre-buried corrugated pipe connection structure, using the tower limb pre-buried corrugated pipe connection structure as claimed in claim 9, characterized in that: The following steps are involved: S1. Sleeve one end of the flaring assembly into one end of the prestressed bellows casing, hold the support rod to pull the fixing plate, support block and rubber sealing pad toward the outer end, so that the six support blocks move toward the outer end synchronously to expand the inner diameter, and at the same time expand the inner diameter of one end of the bellows; S2, the inner diameter of one end of the bellows gradually expands and contacts the inner wall of the fixing ring. In the process of pulling the fixing plate, the elastic clamping block passes through the holes in sequence and is clamped on the outside of the fixing ring, thereby fixing the support block and the bellows. Under the action of the tension of the first spring, one end of the support rod is pulled downward, and the support rod slides toward one end with the fixing rod as the central axis, so that it is inclined, and one end of the support rod contacts the top of the first clamping block, and exerts downward pressure under the action of the first spring, and contacts the outside of the bellows through the convex block; S3, during the movement of the support block toward the outer end, the slider and the spring telescopic rod drive the receiving block and the limit plate to move toward the outer end synchronously to expand the inner diameter, so that one end of the sleeved bellows can be sleeved on the inner wall of the receiving block, and one end is in contact with the outer groove of the connecting rod, pushing the sleeved bellows to drive the receiving block to shrink into the support block. At the same time, under the guidance of the rubber sealing ring, the receiving block moves toward the middle, reducing its inner diameter and stretching the spring telescopic rod, so that the internal bellows is clamped by the receiving block; S4. At the same time, the guide block, the connecting rod and the second clamping block are located on the other side through the inner wall of the rubber sealing ring. Since the thickness of one end of the support block is smaller than the thickness of the other end, the second spring resets and pushes the guide block, the connecting rod and the second clamping block respectively, so that the guide block contacts the inner wall of the support block, and the second clamping block clamps the corrugated tube on the inner wall of the receiving block. The corrugated tube is fixed to the inner wall of the receiving block through the second clamping block, and the receiving block is located in the support block under the limit of the guide block, and the support block and the receiving block are sealed by the rubber sealing ring.

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