A protective sleeve for a CPIII observation mast to prevent it from bursting

Abstract

The application discloses a protection sleeve for preventing blasting CPIII observation pier, and belongs to the technical field of railway construction, which comprises a telescopic sleeve with a changeable inner diameter, wherein the telescopic sleeve is internally provided with anti-leakage paper, and the outer portion of the telescopic sleeve is externally provided with a plurality of protection hoops. The telescopic sleeve can be adjusted in the inner diameter to adapt to the change of the concrete column when the temperature changes, so that the stress concentration caused by the thermal expansion and cold contraction of the concrete column is relieved.

Description

Technical Field

[0001] This application relates to the technical field of railway construction, and in particular to a protective sleeve for preventing the CPIII observation pier from cracking. Background Technology

[0002] On railway lines, CPIII points are used to determine track geometry, railway clearances, and railway construction layout. These points typically require precise placement, and in subgrade sections, they are usually located on the foundations of electrification posts.

[0003] Plastic sleeves are widely used as protective components in railway subgrade sections. However, due to the thermal expansion and contraction characteristics of concrete, and the physical properties of plastic materials in alternating high and low temperature environments, plastic sleeves are prone to penetrating cracks after a period of time. This cracking not only undermines the protective function of the plastic sleeve but can also expose the CPIII observation pier to the external environment, drastically accelerating its service life. Furthermore, the detachment of cement blocks from the observation pier can lead to railway transportation safety accidents. Summary of the Invention

[0004] To address the issue of easy cracking in the plastic sleeve used to protect the CPIII observation pier, this application provides a protective sleeve for the CPIII observation pier that prevents cracking.

[0005] The technical solution for a protective sleeve to prevent the CPIII observation pier from cracking provided in this application is as follows:

[0006] A protective sleeve for preventing the CPIII observation pier from cracking includes a telescopic sleeve with an adjustable inner diameter, the telescopic sleeve being provided with anti-leakage paper inside, and a number of protective clamps being fitted on the outside of the telescopic sleeve.

[0007] By adopting the above technical solution, anti-leakage paper is placed inside the telescopic sleeve to prevent leakage during concrete pouring, ensuring pouring quality. Concrete columns are prone to cracking when the temperature changes. By setting up the telescopic sleeve, the inner diameter of the telescopic sleeve can be adjusted to adapt to the changes in the concrete column, alleviating stress concentration caused by thermal expansion and contraction of the concrete column. The protective clamp can support the telescopic sleeve, enhance the overall structural strength and stability of the telescopic sleeve, and prevent the telescopic sleeve from falling off.

[0008] Preferably, the telescopic sleeve includes a protective sleeve body, the outer peripheral surface of the protective sleeve body is provided with an installation through groove, the installation through groove extends vertically through the protective sleeve body, the inner wall of the installation through groove is fixed with a plurality of locking blocks, and the inner wall of the other side of the installation through groove is provided with a plurality of locking slots, the locking blocks can be inserted into adjacent locking slots.

[0009] By adopting the above technical solution, the locking block is inserted into the corresponding locking groove, so that the protective sleeve body surrounds and protects the concrete column. When the concrete column expands and cracks, the locking block moves in the locking groove, and the protective sleeve body can expand and contract when the temperature changes, so as to alleviate the stress concentration caused by thermal expansion and contraction.

[0010] Preferably, the locking block includes a connecting block and a locking block. Several wedge-shaped blocks are respectively provided on both sides of the locking block. An installation groove is respectively opened on the opposite inner side of the locking groove. The side of the wedge-shaped block can abut against the inner wall of the installation groove.

[0011] By adopting the above technical solution, when the concrete column undergoes thermal expansion, the wedge block near the connecting block moves to the outside of the locking groove, while the wedge block away from the connecting block remains inside the locking groove, making it difficult for the protective sleeve body to fall off.

[0012] Preferably, the telescopic sleeve includes an inner cylinder and an outer cylinder. The inner cylinder includes several arc-shaped pieces. Two movable rods are fixed on the outer arc surface of each arc-shaped piece. The outer circumferential surface of the outer cylinder is provided with a movable through hole for passing through the movable rods. The outer cylinder is provided with a limiting component for pushing two adjacent arc-shaped pieces to fit together.

[0013] By adopting the above technical solution, an annular cavity is formed between the inner cylinder and the outer cylinder, which can play a certain role in heat preservation for the concrete column. When the concrete column undergoes thermal expansion, the arc-shaped piece can be displaced along the radial direction of the concrete column. The moving rod moves within the moving through hole, providing guidance for the arc-shaped piece, so that the arc-shaped piece always moves radially.

[0014] Preferably, the limiting component includes a limiting block fixed to the inner circumferential surface of the outer cylinder, a limiting groove for the moving rod to pass through the side of the limiting block, a fixing block fixed in the limiting groove, a fixing through groove for the moving rod to pass through the fixing block, a moving spring fixed to the side of the fixing block away from the outer cylinder, and a fixed connection between the end of the moving spring away from the fixing block and the inner wall of the fixing through groove.

[0015] By adopting the above technical solution, the moving rod moves towards the concrete column under the elastic force of the moving spring, so that the arc-shaped piece always abuts against the outer circumference of the concrete column.

[0016] Preferably, the inner wall of the outer cylinder is provided with an annular groove, a rotating ring is rotatably installed in the annular groove, a plurality of insert blocks are fixed on the top surface of the rotating ring, the side of the moving rod is provided with an insertion hole, and the side of the insert block is fixed with a plug-in block, which can be inserted into the insertion hole.

[0017] By adopting the above technical solution, when the plug-in block is inserted into the socket, several arc-shaped pieces fit together to form a cylindrical sleeve, so as to facilitate the pouring of concrete into the inner cylinder. After the pouring is completed, the rotating ring is rotated in the direction away from the moving rod, so that the plug-in block is disengaged from the socket.

[0018] Preferably, the outer circumferential surface of the outer cylinder is provided with a positioning hole, the outer circumferential surface of the rotating ring is provided with a positioning groove, a positioning rod is inserted into the positioning hole, and the positioning rod can be inserted into the positioning groove.

[0019] By adopting the above technical solution, when the plug block is inserted into the plug hole, the positioning groove is aligned with the positioning hole, and the positioning rod is inserted into the positioning groove, so that the rotating ring is not easy to rotate, thus ensuring the casting quality.

[0020] Preferably, a reset block is fixed on the outer circumferential surface of the rotating ring, a reset groove is formed on the inner wall of the annular groove, the reset block slides and engages with the outer cylinder through the reset groove, a reset spring is fixed on the side of the reset block away from the positioning rod, and the end of the reset spring away from the reset block is fixedly connected to the inner wall of the reset groove.

[0021] By adopting the above technical solution, when the positioning rod is disengaged from the positioning groove, the rotating ring rotates away from the moving rod under the elastic force of the return spring, causing the plug block to disengage from the plug hole, and the arc-shaped piece abuts against the concrete column under the elastic force of the moving spring.

[0022] Preferably, the bottom surface of the outer cylinder is provided with a plurality of drainage outlets, and the plurality of drainage outlets are arranged at intervals along the circumference of the outer cylinder.

[0023] By adopting the above technical solution, rainwater may enter the cavity between the inner and outer cylinders through the gaps in the telescopic sleeve, and the drainage outlet can be set so that the water accumulated between the inner and outer cylinders can be discharged through the drainage outlet.

[0024] Preferably, a fan-shaped piece is fixed to the top surface of the arc-shaped piece, and the bottom surface of the fan-shaped piece is in contact with the top surface of the outer cylinder.

[0025] By adopting the above technical solution, the fan-shaped plate fits into the top surface of the outer cylinder, making it difficult for rainwater to accumulate between the inner and outer cylinders.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Leak-proof paper is placed inside the telescopic sleeve to prevent leakage during concrete pouring, ensuring pouring quality. Concrete columns are prone to cracking when the temperature changes. By setting up the telescopic sleeve, the inner diameter of the telescopic sleeve can be adjusted to adapt to the changes in the concrete column, alleviating stress concentration caused by thermal expansion and contraction of the concrete column. The protective clamp can support the telescopic sleeve, enhance the overall structural strength and stability of the telescopic sleeve, and prevent the telescopic sleeve from falling off.

[0028] 2. Insert the locking block into the corresponding locking groove so that the protective sleeve body surrounds and protects the concrete column. When the concrete column expands and cracks, the locking block moves in the locking groove. The protective sleeve body can expand and contract when the temperature changes, so as to alleviate the stress concentration caused by thermal expansion and contraction.

[0029] 3. An annular cavity is formed between the inner and outer cylinders, which can provide a certain degree of heat preservation for the concrete column. When the concrete column undergoes thermal expansion, the arc-shaped piece can be displaced radially along the concrete column. The moving rod moves within the moving through hole, providing guidance for the arc-shaped piece, so that the arc-shaped piece always moves radially. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0031] Figure 2 This is a cross-sectional view of the protective sleeve body in Embodiment 1 of this application.

[0032] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0033] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0034] Figure 5 This is a cross-sectional view of the outer cylinder in Embodiment 2 of this application.

[0035] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0036] Figure 7 This is a schematic diagram of the rotating ring in Embodiment 2 of this application.

[0037] Figure 8 yes Figure 7 Enlarged diagram of point C in the middle.

[0038] Reference numerals: 1. Telescopic sleeve; 2. Leak-proof paper; 3. Protective clamp; 4. Protective sleeve body; 41. Mounting slot; 42. Locking block; 421. Connecting block; 422. Locking block; 423. Wedge block; 43. Locking groove; 44. Mounting groove; 5. Inner cylinder; 51. Arc-shaped piece; 52. Fan-shaped piece; 53. Moving rod; 54. Fixed slot; 55. Moving spring; 56. Insertion hole; 6. Outer cylinder; 61. Drain outlet; 62. Moving through hole; 63. Limiting block; 64. Limiting groove; 65. Fixing block; 66. Annular groove; 661. Reset groove; 67. Rotating ring; 671. Positioning groove; 672. Reset block; 673. Reset spring; 68. Insertion block; 681. Insertion block; 69. Positioning rod; 691. Positioning hole. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0040] This application discloses a protective sleeve for preventing the CPIII observation pier from cracking.

[0041] Example 1

[0042] Reference Figure 1 The protective sleeve for the CPIII observation pier, designed to prevent cracking, includes a telescopic sleeve 1. Inside the telescopic sleeve 1 is an anti-leakage paper 2, which prevents leakage during concrete pouring, ensuring pouring quality. Two protective clamps 3 are fitted onto the outside of the telescopic sleeve 1. These clamps provide support, enhancing the overall structural strength and stability of the telescopic sleeve 1 and preventing it from detaching.

[0043] Reference Figure 2 and Figure 3 The telescopic sleeve 1 includes a protective sleeve body 4. An installation groove 41 is formed on the outer circumferential surface of the protective sleeve body 4, penetrating vertically through the protective sleeve body 4. Several locking blocks 42 are fixed to the inner wall of the installation groove 41, and several engaging grooves 43 are formed on the other inner wall of the installation groove 41. The locking blocks 42 can be inserted into adjacent engaging grooves 43. Each locking block 42 includes a connecting block 421 and an engaging block 422. Several wedge-shaped blocks 423 are respectively provided on both sides of the engaging block 422. Installation grooves 44 are formed on the opposite inner sides of the engaging grooves 43, and the sides of the wedge-shaped blocks 423 can abut against the inner wall of the installation groove 44.

[0044] Insert the snap-fit ​​block 422 into the corresponding snap-fit ​​groove 43 so that the protective sleeve body 4 surrounds and protects the concrete column. When the concrete column expands and cracks, the wedge block 423 near the connecting block 421 moves to the outside of the snap-fit ​​groove 43, while the wedge block 423 away from the connecting block 421 remains inside the snap-fit ​​groove 43, making it difficult for the protective sleeve body 4 to fall off.

[0045] The implementation principle of Embodiment 1 of this application is as follows: a leak-proof paper 2 is placed inside the telescopic sleeve 1 to prevent leakage during concrete pouring and ensure the quality of the pouring. Concrete columns are prone to cracking when the temperature changes. By setting the telescopic sleeve 1, the inner diameter of the telescopic sleeve 1 can be adjusted to adapt to the changes in the concrete column when the temperature changes, thereby alleviating the stress concentration caused by the thermal expansion and contraction of the concrete column. The protective clamp 3 can support the telescopic sleeve 1, enhance the overall structural strength and stability of the telescopic sleeve 1, and prevent the telescopic sleeve 1 from falling off.

[0046] Example 2

[0047] Reference Figure 4 and Figure 5 The difference between this embodiment and Embodiment 1 is that the telescopic sleeve 1 includes an inner cylinder 5 and an outer cylinder 6. The inner cylinder 5 includes four arc-shaped pieces 51, with the sides of two adjacent arc-shaped pieces 51 abutting to form a cylindrical shape. A fan-shaped piece 52 is fixed to the top surface of the arc-shaped piece 51, and the bottom surface of the fan-shaped piece 52 abuts to the top surface of the outer cylinder 6. A plurality of drain holes 61 are provided on the bottom surface of the outer cylinder 6, and the plurality of drain holes 61 are spaced apart along the circumference of the outer cylinder 6.

[0048] Reference Figure 5 and Figure 6 Two movable rods 53 are fixed to the outer arc surface of the arc-shaped piece 51. A movable through hole 62 for the movable rods 53 is provided on the outer circumferential surface of the outer cylinder 6. A limiting block 63 is fixed to the inner circumferential surface of the outer cylinder 6, and a limiting groove 64 for the movable rods 53 is provided on the side of the limiting block 63. A fixing block 65 is fixed inside the limiting groove 64, and a fixing through groove 54 for the fixing block 65 is provided on the side of the movable rod 53. A movable spring 55 is fixed to the side of the fixing block 65 away from the outer cylinder 6, and the end of the movable spring 55 away from the fixing block 65 is fixedly connected to the inner wall of the fixing through groove 54. Under the elastic force of the movable spring 55, the movable rod 53 moves towards the concrete column, ensuring that the arc-shaped piece 51 always abuts against the outer circumferential surface of the concrete column.

[0049] Reference Figure 6 , Figure 7 and Figure 8The inner wall of the outer cylinder 6 has an annular groove 66, within which a rotating ring 67 is rotatably mounted. Four equally spaced insert blocks 68 are fixed to the top surface of the rotating ring 67, and insert blocks 681 are fixed to the sides of the insert blocks 68. An insertion hole 56 is provided on the side of the moving rod 53, into which the insert blocks 681 can be inserted. A positioning hole 691 is provided on the outer circumferential surface of the outer cylinder 6, into which a positioning rod 69 is inserted. A positioning groove 671 is provided on the outer circumferential surface of the rotating ring 67, into which the positioning rod 69 can be inserted. A reset block 672 is fixed to the outer circumferential surface of the rotating ring 67, and a reset groove 661 is provided on the inner wall of the annular groove 66. The reset block 672 slides against the outer cylinder 6 through the reset groove 661. A reset spring 673 is fixed to the side of the reset block 672 away from the positioning rod 69, and the end of the reset spring 673 away from the reset block 672 is fixedly connected to the inner wall of the reset groove 661.

[0050] When the plug block 681 is inserted into the socket 56, the positioning groove 671 is aligned with the positioning hole 691, and the positioning rod 69 is inserted into the positioning groove 671, making it difficult for the rotating ring 67 to rotate. Several arc-shaped pieces 51 fit together to form a cylindrical sleeve, so as to facilitate the pouring of concrete into the inner cylinder 5 and ensure the quality of the pouring. After the pouring is completed, the positioning rod 69 is removed from the positioning groove 671, and the rotating ring 67 rotates away from the moving rod 53 under the elastic force of the return spring 673, so that the plug block 681 is removed from the socket 56, and the arc-shaped pieces 51 abut against the concrete column under the elastic force of the moving spring 55.

[0051] The implementation principle of Embodiment 2 of this application is as follows: an annular cavity is formed between the inner cylinder 5 and the outer cylinder 6, which can play a certain role in heat preservation for the concrete column. When the concrete column undergoes thermal expansion, the arc-shaped piece 51 can be displaced along the radial direction of the concrete column.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A burst prevention CPIII observation pier protection sleeve, characterized in that: The application relates to a telescopic sleeve (1) with a variable inner diameter, wherein the telescopic sleeve (1) is internally provided with anti-leakage paper (2), and the telescopic sleeve (1) is externally provided with a plurality of protective hoops (3). The telescopic sleeve (1) comprises an inner cylinder (5) and an outer cylinder (6), the inner cylinder (5) comprises a plurality of arc-shaped pieces (51), the outer arc surface of the arc-shaped pieces (51) is fixedly provided with two moving rods (53), the outer circumferential surface of the outer cylinder (6) is provided with moving through holes (62) for penetrating the moving rods (53), and the outer cylinder (6) is provided with limiting components for pushing the adjacent two arc-shaped pieces (51) to abut. The limiting components comprise limiting blocks (63) fixed to the inner circumferential surface of the outer cylinder (6), the side surface of the limiting blocks (63) is provided with limiting grooves (64) for penetrating the moving rods (53), the limiting grooves (64) are fixedly provided with fixed blocks (65), the side surface of the moving rods (53) is provided with fixed through grooves (54) for penetrating the fixed blocks (65), the side surface of the fixed blocks (65) away from the outer cylinder (6) is fixedly provided with moving springs (55), and one end of the moving springs (55) away from the fixed blocks (65) is fixedly connected with the inner wall of the fixed through grooves (54). The inner wall of the outer cylinder (6) is provided with an annular groove (66), the annular groove (66) is rotatably provided with a rotating ring (67), the top surface of the rotating ring (67) is fixedly provided with a plurality of insertion blocks (68), the side surface of the moving rods (53) is provided with insertion holes (56), the side surface of the insertion blocks (68) is fixedly provided with insertion blocks (681), and the insertion blocks (681) can be inserted into the insertion holes (56). The outer circumferential surface of the outer cylinder (6) is provided with positioning holes (691), the outer circumferential surface of the rotating ring (67) is provided with positioning grooves (671), the positioning holes (691) are inserted with positioning rods (69), and the positioning rods (69) can be inserted into the positioning grooves (671).

2. A protective sleeve for a CPIII observation tower to prevent explosive failure according to claim 1, wherein: The outer circumferential surface of the rotating ring (67) is fixedly provided with reset blocks (672), the inner wall of the annular groove (66) is provided with reset grooves (661), the reset blocks (672) are in sliding fit with the outer cylinder (6) through the reset grooves (661), the side surface of the reset blocks (672) away from the positioning rods (69) is fixedly provided with reset springs (673), and one end of the reset springs (673) away from the reset blocks (672) is fixedly connected with the inner wall of the reset grooves (661).

3. A protective sleeve for a CPIII observation tower to prevent explosive failure as defined in claim 1, wherein: The bottom surface of the outer cylinder (6) is provided with a plurality of drainage openings (61), and the plurality of drainage openings (61) are arranged at intervals along the circumference of the outer cylinder (6).

4. A protective sleeve for a CPIII observation tower to prevent explosive failure as defined in claim 1, wherein: The top surface of the arc-shaped piece (51) is fixedly provided with a fan-shaped piece (52), and the bottom surface of the fan-shaped piece (52) abuts against the top surface of the outer cylinder (6).

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