Post-cast strip jacking structure

Abstract

The utility model relates to the technical field of building auxiliary equipment, and discloses a post-cast strip back-jacking structure which comprises a base, a seamless steel pipe is inserted into the base, the bottom end of the seamless steel pipe is inserted into the base, a top plate is arranged at the top end of the seamless steel pipe, a fixing ring is fixed to the bottom end of the top plate, and the fixing ring is connected to the outer side of the seamless steel pipe in a sleeved mode. Mounting grooves are formed in the two sides of the inner side wall of the base, fixing blocks are slidably arranged in the two mounting grooves, pull rods are fixed to one ends of the fixing blocks, fixing grooves are formed in the two sides of the bottom end of the seamless steel pipe, and when the seamless steel pipe stretches into the base and the bottom of the seamless steel pipe makes contact with the inner bottom wall of the base, the fixing blocks can be pushed to stretch into the fixing grooves; and the seamless steel pipe is fixed. According to the device, the pull rod is pulled to enable the fixing block to retract into the mounting groove, then the seamless steel pipe is lifted to be pulled out of the base, and therefore workers can conveniently and rapidly disassemble and carry the seamless steel pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of building auxiliary equipment, in particular to a post-casting belt top-returning structure. Background Art

[0002] Post-casting back-up structure refers to a temporary deformation joint set at a specific part of a building in a high-rise building or main podium structure to solve the structural deformation problem caused by uneven foundation settlement, concrete shrinkage and temperature changes. This structural design plays a key role in the construction process.

[0003] When fixing the top-return structure, a pier formwork is often poured at the bottom of the seamless steel pipe to support and fix the seamless steel pipe. When dismantling the top-return structure, it is often necessary to remove the pier formwork below. Since the pier formwork is made of concrete, the dismantling process is time-consuming. Utility Model Content

[0004] In order to remedy the above deficiencies, the utility model provides a post-casting strip back-to-top structure, aiming to improve the problem in the prior art that the pier formwork needs to be dismantled when the back-to-top structure is dismantled, and that a lot of time is required in the dismantling process because the pier formwork is made of cast concrete.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a post-casting belt return top structure, including

[0006] A base, wherein a fixing ring is fixedly connected to the top of the base;

[0007] A seamless steel pipe, one end of which is located inside the base and a top plate is provided on the top to support the post-casting strip;

[0008] The fixing ring is arranged on the outside of the seamless steel pipe;

[0009] Fixed grooves are provided on both sides of the bottom end of the seamless steel pipe;

[0010] The mounting grooves are opened on both sides of the inner wall of the base, and the two mounting grooves are slidably connected with fixed blocks. One end of the two fixed blocks is slidably connected to the inside of the fixing grooves. The fixed blocks are used to connect the base and the seamless steel pipe when extended, and the ends of the two fixed blocks away from the seamless steel pipe are fixedly connected with pull rods.

[0011] As a further description of the above technical solution:

[0012] It also includes two springs 1; the two springs 1 are respectively located outside the two pull rods, one end of the spring 1 is connected to the fixed block, and the spring 1 is used to provide an inward elastic force to the fixed block.

[0013] As a further description of the above technical solution:

[0014] Limiting grooves are arranged on both sides of the inner side wall of the fixing ring, and limiting blocks are slidably connected inside the two limiting grooves. The two limiting blocks are respectively installed on both sides of the bottom end of the seamless steel pipe for positioning the seamless steel pipe.

[0015] As a further description of the above technical solution:

[0016] The bottom end of the base is fixedly connected with a plurality of evenly distributed convex patterns.

[0017] As a further description of the above technical solution:

[0018] The bottom end of the top plate is fixedly connected with a sleeve, and the sleeve is sleeved on the top end of the seamless steel pipe. The sleeve is used to connect the top plate and the seamless steel pipe. Positioning grooves are provided on both sides of the top end of the seamless steel pipe.

[0019] As a further description of the above technical solution:

[0020] Also includes

[0021] Grooves are arranged on both sides of the inner wall of the sleeve;

[0022] Two springs 2, one end of the two springs 2 are respectively fixed on the inner walls of the two grooves, and the other ends of the two springs 2 are fixedly connected with positioning blocks. Spring 2 is used to provide elastic force to the positioning block. Under the action of the elastic force, the other end of the positioning block can be inserted into the positioning groove, and the protrusion is used to fix the sleeve in the extended state.

[0023] As a further description of the above technical solution:

[0024] Slide grooves are provided at both the front and rear ends of the inner side wall of the groove, and a plurality of slide grooves are slidably connected with sliders inside, and the connected sides of the plurality of sliders are respectively installed at both sides of the positioning block.

[0025] The utility model has the following beneficial effects:

[0026] In the utility model, when the seamless steel pipe needs to be disassembled, the pull rod can be pulled to retract the fixing block into the installation groove, and then the seamless steel pipe can be lifted to be drawn out from the base, so that the staff can quickly disassemble and carry the seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a post-casting belt top-return structure proposed by the utility model;

[0028] Figure 2 A three-dimensional cross-sectional view of a base with a post-casting top structure proposed by the utility model;

[0029] Figure 3 A three-dimensional cross-sectional view of a top plate of a post-casting belt return top structure proposed by the utility model;

[0030] Figure 4 The utility model provides a side view of a seamless steel pipe with a post-casting top return structure.

[0031] Legend:

[0032] 1. Seamless steel pipe; 2. Base; 3. Fixed ring; 4. Sleeve; 5. Top plate; 6. Limit block; 7. Limit groove; 8. Mounting groove; 9. Relief; 10. Groove; 11. Spring 1; 12. Pull rod; 13. Fixed block; 14. Fixed groove; 15. Positioning block; 16. Spring 2; 17. Slider; 18. Positioning groove; 19. Slide groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1-4 The utility model provides an embodiment: a post-casting belt return top structure, including a base 2, a fixing ring 3 is fixedly connected to the top of the base 2, and a seamless steel pipe 1 is inserted inside the base 2, such as Figure 1 As shown, the bottom end of the seamless steel pipe 1 is inserted into the interior of the base 2, and a top plate 5 is placed on the top of the seamless steel pipe 1 close to the top of the steel pipe, the fixing ring 3 is sleeved on the outside of the seamless steel pipe 1, and there is no connection between the two. The base 2 and the top plate 5 can increase the contact area between the seamless steel pipe 1 and the ground and the contact area of ​​the post-casting strip, thereby increasing the load-bearing capacity of the seamless steel pipe 1. There is no connection between the top plate 5 and the seamless steel pipe 1. Installation grooves 8 are provided on both sides of the inner wall of the base 2, and fixed blocks 13 are slid inside the two installation grooves 8. A pull rod 12 is fixed at one end of the fixed block 13. Fixed grooves 14 are provided on both sides of the bottom end of the seamless steel pipe 1. When the seamless steel pipe 1 is extended into the interior of the base 2 and the bottom of the seamless steel pipe 1 contacts the inner bottom wall of the base 2, the fixing block 13 can be pushed to extend into the fixing groove 14 to fix the seamless steel pipe 1.

[0035] A spring 11 is respectively wrapped around the outside of the two pull rods 12, one end of the spring 11 is fixed to the side of the fixing block 13 close to the pull rod 12, and the other end of the spring 11 is fixed to the inner wall of the mounting groove 8. After the seamless steel pipe 1 enters the base 2, the spring 11 can provide elastic force to push the fixing block 13 into the fixing groove 14 to fix the seamless steel pipe 1.

[0036] Limiting grooves 7 are provided on both sides of the inner wall of the fixing ring 3, and limiting blocks 6 are slidably connected inside the two limiting grooves 7. The two limiting blocks 6 are respectively installed on both sides of the bottom end of the seamless steel pipe 1 for positioning the seamless steel pipe 1. When the seamless steel pipe 1 enters the base 1, the limiting blocks 6 will enter the limiting grooves 7 to prevent the seamless steel pipe 1 from rotating.

[0037] The bottom of the base 2 is fixedly connected with a plurality of evenly distributed convex grooves 9. When the base 2 contacts the ground, the convex grooves 9 below can increase the friction between the base 2 and the ground. The convex grooves 9 at the bottom of the base 2 are extremely small and do not affect the bearing capacity of the base 2.

[0038] The bottom end of the top plate 5 is fixedly connected with a sleeve 4, which is sleeved on the top of the seamless steel pipe 1. The sleeve 4 is used to connect the top plate 5 and the seamless steel pipe 1. Positioning grooves 18 are provided on both sides of the top of the seamless steel pipe 1. The sleeve 4 is sleeved on the top of the seamless steel pipe 1 to fix the top plate 5 to the top of the seamless steel pipe 1.

[0039] Grooves 10 are provided on both sides of the inner wall of the sleeve 4, and the inner walls of the two grooves 10 are fixedly connected with springs 2 16, springs 2 16 and 2 16. The other ends of the two springs 2 16 are fixedly connected with positioning blocks 15. The springs 2 16 are used to continuously provide elastic force to the positioning blocks 15, so that the positioning blocks 15 enter the positioning grooves 18 to fix the sleeve 4. The other ends of the two positioning blocks 15 are slidably connected to the positioning grooves 18. The shapes of the positioning blocks 15 and the positioning grooves 18 are both semicircular. When the sleeve 4 is sleeved onto the outer side of the seamless steel pipe 1, the seamless steel pipe 1 will squeeze the positioning blocks 15. Because the side of the positioning blocks 15 in contact with the seamless steel pipe 1 is arc-shaped, the positioning blocks 15 will retract into the grooves 10 under the extrusion of the seamless steel pipe 1. When the top of the seamless steel pipe 1 contacts the bottom of the top plate 5, the elastic force of the springs 2 16 will push the positioning blocks 15 to extend into the positioning grooves 18, thereby limiting and fixing the sleeve 4.

[0040] Slide grooves 19 are provided at both ends of the inner wall of the groove 10, and sliders 17 are slidably connected inside the multiple slide grooves 19. The connected sides of the multiple sliders 17 are respectively installed on both sides of the positioning block 15. When the spring 16 pushes the positioning block 15 to move, the positioning block 15 will drive the slider 17 to slide inside the slide groove 19. When the slider 17 contacts the inner wall of the slide groove 19, the positioning block 15 can be limited.

[0041] Working principle: put the sleeve onto the top of the seamless steel pipe 1, and use the spring 2 16 to push the positioning block 15 out, and then enter the positioning groove 18, so as to fix the top plate 5 to the top of the seamless steel pipe 1; place the base 2 on the ground, and stand up the seamless steel pipe 1 and extend it into the base 2, at the same time, make the limit block 6 enter the limit groove 7, and use the spring 11 to push the fixing block 13 into the fixing groove 14, so as to assemble and fix the seamless steel pipe 1 and the base 2, and then return the top of the post-casting strip. When it is necessary to disassemble the seamless steel pipe 1, the pull rod 12 can be pulled to retract the fixing block 13, and then the seamless steel pipe 1 can be pulled out from the base 2 to facilitate the staff to quickly disassemble the seamless steel pipe 1, and at the same time, the top plate 5 can be pulled and the top plate 5 can drive the sleeve 4 to move together. Because the positioning block 15 and the positioning groove 18 are both semicircular, the positioning groove 18 will push the positioning block 15 to retract when the sleeve 4 moves, so that the staff can remove the sleeve 4 from the top of the seamless steel pipe 1.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A post-casting belt return top structure, characterized in that: include A base (2), wherein a fixing ring (3) is fixedly connected to the top of the base (2); A seamless steel pipe (1), one end of which is located inside the base (2), and a top plate (5) is provided on the top end for supporting the post-casting strip; The fixing ring (3) is arranged on the outside of the seamless steel pipe (1); Fixed grooves (14) are provided on both sides of the bottom end of the seamless steel pipe (1); The mounting grooves (8) are opened on both sides of the inner wall of the base (2); the two mounting grooves (8) are slidably connected with fixed blocks (13); one end of the two fixed blocks (13) is slidably connected to the inside of the fixing groove (14); the fixed blocks (13) are used to connect the base (2) and the seamless steel pipe (1) when extended; the ends of the two fixed blocks (13) away from the seamless steel pipe (1) are fixedly connected with pull rods (12).

2. The post-casting strip top-return structure according to claim 1, characterized in that: It also includes two springs (11); the two springs (11) are respectively located outside the two pull rods (12); one end of the spring (11) is connected to the fixed block (13); the spring (11) is used to provide an inward elastic force to the fixed block (13).

3. The post-casting strip top-return structure according to claim 1 is characterized in that: Limiting grooves (7) are provided on both sides of the inner wall of the fixing ring (3), and limiting blocks (6) are slidably connected inside the two limiting grooves (7). The two limiting blocks (6) are respectively installed on both sides of the bottom end of the seamless steel pipe (1) to position the seamless steel pipe (1).

4. The post-casting strip top-return structure according to claim 1 is characterized in that: A plurality of evenly distributed convex patterns (9) are fixedly connected to the bottom end of the base (2).

5. The post-casting strip top-return structure according to claim 1 is characterized in that: The bottom end of the top plate (5) is fixedly connected to a sleeve (4), the sleeve (4) is sleeved on the top end of the seamless steel pipe (1), the sleeve (4) is used to connect the top plate (5) and the seamless steel pipe (1), and positioning grooves (18) are provided on both sides of the top end of the seamless steel pipe (1).

6. The post-casting strip top-return structure according to claim 5, characterized in that: Also includes Grooves (10) are provided on both sides of the inner wall of the sleeve (4); Two springs (16), one end of each of the two springs (16) being fixed to the inner side walls of the two grooves (10), and the other end of each of the two springs (16) being fixedly connected to a positioning block (15). The springs (16) are used to provide elastic force to the positioning block (15). Under the action of the elastic force, the other end of the positioning block (15) can be inserted into the positioning groove (18). The positioning block (15) is used to fix the sleeve (4) in the extended state.

7. The post-casting strip top-return structure according to claim 6 is characterized in that: Slide grooves (19) are provided at both the front and rear ends of the inner wall of the groove (10), and a plurality of slide grooves (19) are slidably connected to the inside thereof with sliders (17), and the connected sides of the plurality of sliders (17) are respectively mounted on both sides of the positioning block (15).

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