An electrical embedded casing and its construction method

Abstract

The present invention discloses an electrical embedded casing, comprising two symmetrically arranged main casings, wherein the inner walls of the two main casings are jointly sealed and slidably connected to a connecting casing, an annular groove is formed on the outer wall of the connecting casing, and the inner walls on both sides of the annular groove are jointly rotatably connected to an adjusting rod via a bearing, the ends of the two adjusting rods are fixed correspondingly, the adjusting rods are threaded rods, and the circumferential side walls of the two adjusting rods are both threadedly rotatably connected to a movable ring. The advantage is that by arranging two main casings that can simultaneously seal and slide on the outer wall of the connecting casing, the two main casings can be simultaneously slid during the rotation of the adjusting rod, which is a threaded rod, thereby quickly realizing the expansion and contraction and recovery of the embedded casing, facilitating the use of equipment of different thicknesses through walls, eliminating the need to measure the thickness in advance and prepare a large number of embedded casings of different lengths, which can greatly reduce the amount of preparation work, thereby facilitating the rapid installation and use of the embedded casing.

Description

Technical Field

[0001] The present invention relates to the technical field of embedded bushings, and in particular to an electrical embedded bushing and a construction method thereof. Background Art

[0002] Embedded casings are holes reserved for pipes to pass through components such as brick walls, concrete beams, and concrete walls. They are suitable for places where pipes pass through walls and require strict waterproofing. At the construction site of electrical equipment, when it is necessary to perforate the top plate of electromechanical equipment for wiring, it is usually necessary to use embedded pipes to reserve pipe holes in advance to facilitate the passage of lines. However, the length of traditional embedded casings is mostly fixed, and the length of the embedded casing cannot be adjusted according to the thickness of the wall-penetrating equipment. Therefore, the thickness needs to be measured and the length of the embedded casing needs to be controlled before installation. When embedded casings are used frequently, many specifications of casings need to be manufactured, which makes selection more difficult, which in turn increases the workload of embedded casing installation, making it inconvenient to quickly install and use embedded casings in walls of different thicknesses or underground projects. Existing adjustable embedded pipe adjustment parts are mostly exposed to the outside and are prone to rust and corrosion in humid environments, thereby reducing the service life of the embedded casing. To this end, we propose an electrical embedded casing that is easy to adjust in length and has a longer service life. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose an electrical pre-buried bushing and a construction method thereof.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an electrical embedded sleeve, comprising two symmetrically arranged main sleeves, the inner walls of the two main sleeves are jointly sealed and slidably connected with a connecting sleeve, the outer wall of the connecting sleeve is provided with an annular groove, and the inner walls on both sides of the annular groove are jointly rotatably connected with an adjusting rod through a bearing, the two adjusting rod ends are correspondingly fixed, the adjusting rod is a threaded rod, and the circumferential side walls of the two adjusting rods are threadedly rotatably connected with a moving ring, a plurality of guide rods are fixed on the inner wall of the annular groove, and the two moving rings are slidably connected with the plurality of guide rods, and a plurality of fixed blocks are fixed at the end of each of the moving rings, and the plurality of fixed blocks are respectively fixedly connected to the side walls of the two main sleeves, and a sealing block is fixed at the end of each of the main sleeves, and a circuit body is commonly inserted in the interior of the two sealing blocks, and a driving rotation device is provided inside each of the main sleeves, and a pump air sealing device is provided inside each of the sealing blocks.

[0005] In the above-mentioned electrical embedded bushing, the two adjusting rods have opposite thread rotation directions but the same pitch, the movable ring abuts against the inner wall of the annular groove, and the two movable rings are symmetrically arranged.

[0006] In the above-mentioned electrical embedded bushing, an annular baffle is fixed to the outer wall of one of the main bushings, and the inner wall of the annular baffle is sealed against the outer wall of the other main bushing. A plurality of sliding grooves are opened on the outer wall of the other main bushing, and a fixed column is fixed to the inner wall of each sliding groove. A moving block is slidably connected to the circumferential side wall of each fixed column, and the plurality of moving blocks are fixed to the inner wall of the annular baffle.

[0007] In the above-mentioned electrical embedded bushing, the driving rotation device includes a mounting groove opened on the inner wall of the main bushing, the inner wall of the mounting groove is rotatably connected to a driving rod through a bearing, one end of the driving rod passes through the outside of the main bushing and is fixed with a turntable, and a vertical plate is fixed to the inner wall of the main bushing, and the side wall of the vertical plate and the circumferential side wall of the driving rod are both provided with connecting gears, and the two connecting gears are meshed with each other.

[0008] In the above-mentioned electrical embedded bushing, the vertical plate corresponds to the installation slot, one of the connecting gears is rotatably connected to the side wall of the vertical plate through a bearing, and the other connecting gear is fixed to the circumferential side wall of the driving rod, and a driven rod is provided through the side wall of the vertical plate, and a limiting slot is provided on the circumferential side wall of the driven rod, and a limiting block is fixed to the inner wall of one of the connecting gears, and the limiting block corresponds to the limiting slot, and the end of the driven rod passes through the connecting sleeve and is fixedly connected to the end of the adjusting rod.

[0009] In the above-mentioned electrical embedded bushing, the pump air sealing device includes a rectangular cavity opened on the side wall of the sealing block, the inner wall of the rectangular cavity is rotatably connected to a horizontal rod through a bearing, the circumferential side wall of the horizontal rod is fixed with an eccentric block, the inner wall of the rectangular cavity is slidably connected to a pump air plate, the bottom of the pump air plate is fixedly connected to the inner bottom of the rectangular cavity by a plurality of connecting springs, and the eccentric block is against the upper end of the pump air plate.

[0010] In the above-mentioned electrical embedded bushing, a storage groove is provided on the inner wall of the sealing block, a sealing airbag is fixed to the inner wall of the storage groove, the sealing airbag and the storage groove are both annular, the interior of the sealing airbag is connected with the interior of the rectangular cavity through a connecting pipe, an air intake groove is provided through the inner wall of the rectangular cavity, and a valve body is provided inside the air intake groove and the connecting pipe.

[0011] The above-mentioned construction method of an electrical embedded bushing includes the following steps:

[0012] Step 1: Determine the installation position of the embedded casing and place the embedded casing at the designated position;

[0013] Step 2: Pass the wires of the electrical equipment through the center of the sealing blocks at both ends of the embedded casing. The sealing blocks can limit the position of the wires to ensure stable use of the wires.

[0014] Step 3: Adjust the length of the embedded casing according to the thickness of the equipment. There is no need to prepare a large number of embedded casings of different sizes in advance, which can reduce the time consumed in preparation work.

[0015] Step 4: Finally, fix the embedded casing.

[0016] Compared with the existing technology, the advantages of the present invention are:

[0017] 1. In the present invention, by arranging two main sleeves that can be sealed and slid at the same time on the outer wall of the connecting sleeve, the two main sleeves can be slid at the same time during the rotation of the adjusting rod of the threaded rod, thereby quickly realizing the expansion and contraction and recovery of the embedded sleeve, facilitating the wall penetration of equipment of different thicknesses, eliminating the need to measure the thickness in advance and prepare a large number of embedded sleeves of different lengths, thereby greatly reducing the amount of preparation work and facilitating the rapid installation and use of the embedded sleeve;

[0018] 2. In the present invention, the sealing blocks at both ends of the two main sleeves can realize the limited support of the wires in the embedded sleeves, which can effectively prevent the shaking of the wires, thereby facilitating the stable use of electrical equipment;

[0019] 3. In the present invention, by providing a pump air sealing device, the external air can be automatically extracted and the air in the sealing airbag can be pumped during the adjustment of the length of the embedded casing, thereby expanding the sealing airbag and making the sealing airbag fit closely with the circuit body, thereby improving stability while ensuring its sealing, and facilitating the use of the embedded casing;

[0020] 4. In the present invention, by utilizing the sealing blocks that can stably seal at both ends and the annular baffle outside the main sleeve, the internal parts of the embedded sleeve can be sealed and protected, thereby avoiding the contact between the parts and the external air, and further effectively avoiding the moisture corrosion of the parts, thereby effectively increasing the service life of the embedded sleeve and facilitating subsequent reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of an electrical embedded bushing proposed by the present invention;

[0022] Figure 2 A side view of an electrical embedded bushing proposed by the present invention;

[0023] Figure 3 A side sectional view of an electrical embedded bushing proposed by the present invention;

[0024] Figure 4 for Figure 1 Enlarged view of part A;

[0025] Figure 5 for Figure 1 Enlarged view of part B;

[0026] Figure 6 A side sectional view of the installation slot portion of an electrical embedded bushing proposed by the present invention;

[0027] Figure 7 This is a structural schematic diagram of the pump gas sealing device part in the electrical embedded bushing proposed by the present invention.

[0028] In the figure: 1 main sleeve, 2 connecting sleeve, 3 annular groove, 4 adjusting rod, 5 movable ring, 6 guide rod, 7 fixed block, 8 sealing block, 9 line body, 10 annular baffle, 11 sliding groove, 12 fixed column, 13 movable block, 14 driving rod, 15 mounting groove, 16 vertical plate, 17 driven rod, 18 connecting gear, 19 limit groove, 20 limit block, 21 rectangular cavity, 22 horizontal rod, 23 eccentric block, 24 pump plate, 25 connecting spring, 26 storage groove, 27 sealing airbag, 28 connecting pipe, 29 air inlet groove, 30 belt. Implementation Method

[0029] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] Reference Figure 1-7 , an electrical pre-buried bushing, comprising two symmetrically arranged main bushings 1, the inner walls of the two main bushings 1 are sealed and slidably connected with a connecting bushing 2, the outer wall of the connecting bushing 2 is provided with an annular groove 3, the inner walls on both sides of the annular groove 3 are rotatably connected with an adjusting rod 4 through a bearing, the ends of the two adjusting rods 4 are fixed correspondingly, the adjusting rod 4 is a threaded rod, the circumferential side walls of the two adjusting rods 4 are threadedly connected with a moving ring 5, the inner wall of the annular groove 3 is fixed with a plurality of guide rods 6, the two moving rings 5 are slidably connected with the plurality of guide rods 6, the end of each moving ring 5 is fixed with a plurality of fixing blocks 7, the plurality of fixing blocks 7 are respectively fixedly connected to the side walls of the two main bushings 1, and the end of each main bushing 1 is fixed with a sealing block Block 8, the interior of the two sealing blocks 8 is interspersed with a line body 9, the interior of each main sleeve 1 is provided with a driving rotation device, and the interior of each sealing block 8 is provided with a pump air sealing device; the two adjusting rods 4 have opposite thread rotation directions but the same pitch, the moving ring 5 is against the inner wall of the annular groove 3, and the two moving rings 5 are symmetrically arranged. The two adjusting rods 4 can drive the two moving rings 5 to move away from or towards each other at the same time, so that the two main sleeves 1 can be extended or retracted, so that the length of the embedded sleeve can be quickly adjusted, without the need to manually measure the thickness of the equipment in advance and prepare fixed-length sleeves, which can effectively reduce the preparation workload and facilitate the installation and use of the embedded sleeve.

[0031] An annular baffle 10 is fixed to the outer wall of one of the main sleeves 1, and the inner wall of the annular baffle 10 is sealed against the outer wall of the other main sleeve 1. A plurality of sliding grooves 11 are opened on the outer wall of the other main sleeve 1, and a fixed column 12 is fixed to the inner wall of each sliding groove 11. The circumferential side wall of each fixed column 12 is penetrated by a moving block 13 in sliding connection, and the plurality of moving blocks 13 are fixed to the inner wall of the annular baffle 10. The annular groove 3 is blocked by the annular baffle 10 to avoid contact between the internal regulating parts and the external air, thereby effectively preventing the internal parts from being corroded by moisture, effectively increasing their service life, and facilitating subsequent reuse.

[0032] The driving rotation device includes a mounting groove 15 opened on the inner wall of the main sleeve 1, and the inner wall of the mounting groove 15 is rotatably connected to the driving rod 14 through a bearing. One end of the driving rod 14 passes through the outside of the main sleeve 1 and is fixed with a turntable. A vertical plate 16 is fixed to the inner wall of the main sleeve 1, and the side wall of the vertical plate 16 and the circumferential side wall of the driving rod 14 are both provided with a connecting gear 18, and the two connecting gears 18 are meshed with each other; the vertical plate 16 corresponds to the mounting groove 15, one of the connecting gears 18 is rotatably connected to the side wall of the vertical plate 16 through a bearing, and the other connecting gear 18 is fixed to the circumferential side wall of the driving rod 14, and a driven rod 17 is penetrated by the side wall of the vertical plate 16. A limiting groove 19 is opened on the circumferential side wall of the driven rod 17, and a limiting block 20 is fixed to the inner wall of one of the connecting gears 18, and the limiting block 20 corresponds to the limiting groove 19. The end of the driven rod 17 passes through the connecting sleeve 2 and is fixedly connected to the end of the adjusting rod 4.

[0033] The pump air sealing device includes a rectangular cavity 21 opened on the side wall of the sealing block 8, the inner wall of the rectangular cavity 21 is rotatably connected to the horizontal rod 22 through a bearing, the circumferential side wall of the horizontal rod 22 is fixed with an eccentric block 23, the inner wall of the rectangular cavity 21 is slidably connected to the pumping plate 24, the bottom of the pumping plate 24 is fixedly connected to the inner bottom of the rectangular cavity 21 through a plurality of connecting springs 25, and the eccentric block 23 is against the upper end of the pumping plate 24; a storage groove 26 is opened on the inner wall of the sealing block 8, and a sealing air bag 27 is fixed on the inner wall of the storage groove 26. The sealing air bag 27 and the storage groove 26 are both annular, and the interior of the sealing air bag 27 is connected to the interior of the rectangular cavity 21 through a connecting pipe 28. An air inlet groove 29 is opened through the inner wall of the rectangular cavity 21. The air inlet groove 29 and the connecting pipe 28 are both provided with a valve body, which is a one-way valve. The conduction direction of the valve body inside the air inlet groove 29 is from the outside of the sealing block 8 to the inside of the rectangular cavity 21, and the conduction direction of the valve body inside the connecting pipe 28 is from the inside of the rectangular cavity 21 to the inside of the sealing airbag 27. The sealing airbag 27 is provided with an exhaust pipe to facilitate the exhaust and reset of the sealing airbag 27. By setting up a pump air sealing device, the external air can be automatically extracted and pumped into the sealing airbag 27 during the process of adjusting the length of the embedded sleeve, thereby realizing the expansion of the sealing airbag 27, and then making the sealing airbag 27 fit tightly with the circuit body 9, thereby making it more stable while ensuring its sealing.

[0034] A construction method for an electrical pre-buried bushing comprises the following steps:

[0035] Step 1: Determine the installation position of the embedded casing and place the embedded casing at the designated position;

[0036] Step 2: Pass the wires of the electrical equipment through the center of the sealing blocks 8 at both ends of the embedded casing. The sealing blocks 8 limit the position of the wires, which can ensure stable use of the wires.

[0037] Step 3: Adjust the length of the embedded casing according to the thickness of the equipment. There is no need to prepare a large number of embedded casings of different sizes in advance, which can reduce the time consumed in preparation work.

[0038] Step 4: Finally, fix the embedded casing.

[0039] In the present invention, during the use of the embedded sleeve, the embedded sleeve is first moved to the designated position according to the position on the drawing, and then the wires to be used are passed through the embedded sleeve along the center position of the two sealing blocks 8. At this time, by rotating the turntable at the end of the main sleeve 1, the rotation of the driving rod 14 can be achieved under the drive of the turntable, and then the connecting gear 18 on the circumferential side wall of the driving rod 14 can be used to achieve the rotation of the connecting gear 18 at the end of the vertical plate 16, and then the driven rod 17 can be driven under the limiting action of the internal limiting block 20 of the connecting gear 18 and the limiting groove 19 on the circumferential side wall of the driven rod 17. 17 rotates accordingly, thereby being able to drive the two adjusting rods 4 which are threaded rods inside the annular groove 3 to rotate simultaneously, thereby utilizing the two adjusting rods 4 with the same pitch but opposite thread rotation directions to realize the simultaneous movement of the two movable rings 5 in opposite directions, and then, driven by the multiple fixed blocks 7, the main sleeve 1 can be realized to slide along the outside of the connecting sleeve 2, thereby realizing the extension of the embedded sleeve, facilitating the use of equipment of different sizes through the wall, without having to measure the size in advance and prepare embedded sleeves of different sizes, which can effectively reduce the time consumed in the preparation work, thereby increasing the installation efficiency of the embedded sleeve;

[0040] When the two main sleeves 1 move away from each other, the movable block 13 fixed inside the annular baffle 10 can slide along the fixed column 12. At the same time, the annular baffle 10 can be used to protect and block the connecting sleeve 2, which can facilitate the adjustment of the embedded sleeve and improve the protection.

[0041] At the same time, when the main sleeve 1 slides along the outside of the connecting sleeve 2, the driven rod 17 can be driven to slide along the vertical plate 16, so that the limit block 20 and the limit groove 19 can slide relative to each other. At the same time, when the limit block 20 and the limit groove 19 always correspond to each other, the connection between the driving rod 14 and the driven rod 17 can be guaranteed. When the two adjusting rods 4 rotate at the same time, the two sets of driving rotating devices can be rotated at the same time. By using the moving ring 5 and the main sleeve 1 that move at the same time, the embedded sleeve can be quickly extended and recovered, thereby accelerating the adjustment efficiency of the embedded sleeve and facilitating the adjustment and use of the embedded sleeve.

[0042] During the rotation of the driving rod 14, the belt 30 in a tightened state can be used to drive the rotation of the horizontal rod 22, thereby enabling the eccentric block 23 to continuously rotate along the horizontal rod 22, so that the pumping plate 24 can be moved downward, and the connecting spring 25 can be used to realize the upward reset of the pumping plate 24 when the eccentric block 23 is separated from the pumping plate 24, thereby realizing the up and down reciprocating movement of the pumping plate 24, thereby utilizing the air inlet groove 29, the connecting pipe 28 and the internal valve body to realize the extraction of external air and the pumping into the sealing airbag 27, so that the sealing airbag 27 can be sealed. It fits tightly with the line body 9, thereby ensuring the sealing of both ends of the embedded sleeve and making the installation stability of the line body 9 better, avoiding the shaking of the line body 9 in the embedded sleeve, and facilitating the stable use of electrical equipment. In addition, combined with the blocking of the outside of the connecting sleeve 2 by the annular baffle 10, the internal parts of the main sleeve 1 and the connecting sleeve 2 can be sealed and shielded, which can effectively prevent the internal parts from contacting with external moisture and causing rust and corrosion, thereby effectively ensuring the service life of the embedded sleeve, facilitating the subsequent reuse of the embedded sleeve, and effectively reducing the waste of resources.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electrical pre-buried bushing, comprising two symmetrically arranged main bushings (1), characterized in that: The inner walls of the two main sleeves (1) are sealed and slidably connected to a connecting sleeve (2). An annular groove (3) is provided on the outer wall of the connecting sleeve (2). The inner walls on both sides of the annular groove (3) are rotatably connected to an adjusting rod (4) through a bearing. The ends of the two adjusting rods (4) are fixed correspondingly. The adjusting rods (4) are threaded rods. The circumferential side walls of the two adjusting rods (4) are threadedly connected to a moving ring (5). A plurality of guide rods (6) are fixed to the inner wall of the annular groove (3). The two moving rings ( 5) are connected to a plurality of guide rods (6) through which they are slidably penetrated, a plurality of fixed blocks (7) are fixed to the end of each of the movable rings (5), the plurality of fixed blocks (7) are respectively fixedly connected to the side walls of the two main sleeves (1), a sealing block (8) is fixed to the end of each of the main sleeves (1), a circuit body (9) is inserted into the interior of the two sealing blocks (8), a driving rotation device is provided inside each of the main sleeves (1), and a pump air sealing device is provided inside each of the sealing blocks (8).

2. The electrical embedded bushing according to claim 1, characterized in that: The two adjusting rods (4) have threads with opposite rotation directions but the same pitch. The movable ring (5) abuts against the inner wall of the annular groove (3). The two movable rings (5) are symmetrically arranged.

3. The electrical embedded bushing according to claim 1, characterized in that: An annular baffle (10) is fixed to the outer wall of one of the main sleeves (1), and the inner wall of the annular baffle (10) is sealed against the outer wall of the other main sleeve (1). A plurality of sliding grooves (11) are opened on the outer wall of the other main sleeve (1), and a fixed column (12) is fixed to the inner wall of each sliding groove (11). A moving block (13) is slidably connected to the circumferential side wall of each fixed column (12), and the plurality of moving blocks (13) are fixed to the inner wall of the annular baffle (10).

4. The electrical embedded bushing according to claim 1, characterized in that: The driving rotation device comprises a mounting groove (15) formed on the inner wall of the main sleeve (1), the inner wall of the mounting groove (15) being rotatably connected to a driving rod (14) via a bearing, one end of the driving rod (14) passing through the outside of the main sleeve (1) and being fixed with a turntable, a vertical plate (16) being fixed to the inner wall of the main sleeve (1), and connecting gears (18) being provided on the side walls of the vertical plate (16) and the circumferential side walls of the driving rod (14), and the two connecting gears (18) being meshed with each other.

5. The electrical embedded bushing according to claim 4, characterized in that: The vertical plate (16) corresponds to the mounting groove (15), one of the connecting gears (18) is rotatably connected to the side wall of the vertical plate (16) through a bearing, and the other connecting gear (18) is fixed to the circumferential side wall of the driving rod (14). A driven rod (17) is provided through the side wall of the vertical plate (16), and a limiting groove (19) is provided on the circumferential side wall of the driven rod (17). A limiting block (20) is fixed to the inner wall of one of the connecting gears (18), and the limiting block (20) corresponds to the limiting groove (19). The end of the driven rod (17) passes through the connecting sleeve (2) and is fixedly connected to the end of the adjusting rod (4).

6. The electrical embedded bushing according to claim 5, characterized in that: The pump air sealing device comprises a rectangular cavity (21) opened on the side wall of the sealing block (8), the inner wall of the rectangular cavity (21) is rotatably connected to a horizontal rod (22) through a bearing, an eccentric block (23) is fixed to the circumferential side wall of the horizontal rod (22), the inner wall of the rectangular cavity (21) is slidably connected to a pump air plate (24), the bottom of the pump air plate (24) is fixedly connected to the inner bottom of the rectangular cavity (21) through a plurality of connecting springs (25), and the eccentric block (23) abuts against the upper end of the pump air plate (24).

7. The electrical embedded bushing according to claim 6, characterized in that: The inner wall of the sealing block (8) is provided with a storage groove (26), and a sealing airbag (27) is fixed to the inner wall of the storage groove (26). The sealing airbag (27) and the storage groove (26) are both annular. The interior of the sealing airbag (27) is communicated with the interior of the rectangular cavity (21) through a connecting pipe (28). An air inlet groove (29) is provided through the inner wall of the rectangular cavity (21), and valve bodies are provided inside the air inlet groove (29) and the connecting pipe (28).

8. The construction method of an electrical embedded bushing according to claim 1, comprising the following steps: Step 1: Determine the installation position of the embedded casing and place the embedded casing at the designated position; Step 2: Pass the wires of the electrical equipment through the center of the sealing blocks (8) at both ends of the embedded casing, and use the sealing blocks (8) to limit the wires, so as to achieve stable use of the wires; Step 3: Adjust the length of the embedded casing according to the thickness of the equipment. There is no need to prepare a large number of embedded casings of different sizes in advance, which can reduce the time consumed in preparation work. Step 4: Finally, fix the embedded casing.

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