A prefabricated stair hoisting structure

Abstract

The utility model relates to stair hoisting technical field, concretely discloses a prefabricated stair hoisting structure, it includes the limiting groove of setting in the prefabricated stair ladder place, the bottom of limiting groove is equipped with the embedded part main body connected with prefabricated stair, and the embedded part main body includes the connecting rod buried in the inside of prefabricated stair, and the connecting head for being connected with the lifting buckle is equipped in the limiting groove, and the adjusting mechanism is equipped between connecting head and connecting rod, and the adjusting mechanism is used for when the lifting buckle hoists up prefabricated stair, makes connecting head extend into the limiting groove. Can connect the lifting buckle and connecting head faster for the convenience of construction personnel.

Description

Technical Field

[0001] This utility model relates to the field of stair hoisting technology, specifically to a prefabricated stair hoisting structure. Background Technology

[0002] In the field of prefabricated buildings, prefabricated stairs have been increasingly widely used due to their significant advantages such as factory production, stable quality, fast construction speed, less on-site wet work, energy saving, and environmental protection. During the construction process, the transportation and hoisting of prefabricated stairs is a crucial step; the safety, efficiency, and accuracy of the hoisting directly affect the overall project progress and quality.

[0003] Traditional methods for installing precast stairs often involve pre-embedding lifting nuts or steel lifting rings within the stair slabs. During construction, the lifting wire rope is simply passed through the lifting rings or screwed into the lifting nuts for hoisting. However, this method has drawbacks. The pre-embedded lifting rings or nuts typically protrude from the stair slab surface, making them susceptible to damage during transportation and storage, affecting their usability. Furthermore, after installation, the stairs require cutting and smoothing, increasing workload and potentially compromising the surface integrity and aesthetics. Utility Model Content

[0004] This utility model provides a prefabricated staircase hoisting structure that can overcome some or more defects of the prior art.

[0005] According to the present invention, a prefabricated staircase hoisting structure includes: a limiting groove provided at the step of the prefabricated staircase, a pre-embedded part body connected to the prefabricated staircase at the bottom of the limiting groove, the pre-embedded part body including a connecting rod embedded in the prefabricated staircase, a connector for connecting with a hoisting buckle provided in the limiting groove, an adjustment mechanism provided between the connector and the connecting rod, the adjustment mechanism being used to allow the connector to extend into the limiting groove when the hoisting buckle lifts the prefabricated staircase.

[0006] With this invention, when hoisting precast stairs, construction workers first attach one end of the hoisting rope to the crane hook, and then connect the other end of the rope to the connector. When connecting the hook and the connector, the construction workers first pull the connector, which raises the telescopic rod and the fixing block until the fixing block is pressed against the bottom of the annular partition and the connector extends out of the limiting groove. After the connector extends out of the limiting groove, the construction workers lock the connector onto the hoisting buckle to complete the connection. Because the connector is pulled out of the limiting groove by the construction workers, interference from the limiting groove is avoided, thus facilitating a faster connection between the hoisting buckle and the connector. After the connector and hanger are connected, the construction workers start the crane to lift the prefabricated staircase to the construction site. Finally, the connector and hanger are released. When the connector and hanger are separated, the spring in the first cavity will squeeze the installation ring, thereby pushing the installation ring and the telescopic rod downward, so that the connector returns to the limiting groove. At this time, the connector will not protrude from the surface of the prefabricated staircase, thus not hindering the construction workers from walking on the prefabricated staircase. After the prefabricated staircase is completed, cement is poured into the limiting groove to bury the connector, and finally the surface of the prefabricated staircase is leveled. During this process, the connector can be removed from the surface of the prefabricated staircase without cutting or hammering, thus not damaging the prefabricated staircase.

[0007] Preferably, the connecting rod includes a connecting sleeve, the inner wall of which expands inward in the circumferential direction to form an annular partition; the annular partition divides the interior of the connecting sleeve into a first sub-cavity and a second sub-cavity; one end of the connecting sleeve is provided with a sealing block for sealing the second sub-cavity, and the other end is provided with a sealing ring for sealing the first sub-cavity; The adjustment mechanism includes a telescopic rod that passes through the sealing ring, the first sub-cavity, and the annular partition in sequence and extends into the second sub-cavity; the outer wall of the end of the telescopic rod that extends into the second sub-cavity expands outward in the circumferential direction to form a fixed block; the end of the telescopic rod away from the fixed block is connected to the connector.

[0008] With this utility model, two embedded main bodies are provided at both ends of the prefabricated staircase. When the prefabricated staircase is hoisted, it is lifted by four hoisting ropes. When the hoisting ropes pull up the connector, the fixing block at the lower end of the telescopic rod is pressed against the lower end of the annular partition. Since the annular partition and the connecting sleeve are formed as one piece, the connection strength between the connecting sleeve and the annular partition is improved, preventing the annular partition and the connecting sleeve from breaking due to the excessive weight of the prefabricated staircase itself when it is hoisted.

[0009] Preferably, the telescopic rod is provided with an installation ring connected to the telescopic rod at the side wall of the first sub-cavity, and a spring is provided between the installation ring and the sealing ring and fitted on the telescopic rod.

[0010] With this invention, during the transportation and stacking of prefabricated stairs, the spring will always compress the mounting ring, causing the mounting ring to press against the annular spacer, thereby ensuring that the connector is always located in the limiting groove. This prevents collisions during the transportation and stacking of prefabricated stairs, which could damage the connector and affect the hoisting process.

[0011] Preferably, the limiting groove has a semi-circular cross-section.

[0012] With this invention, the cross-section of the limiting groove is semi-circular, making the inner wall of the limiting groove arc-shaped, which makes it convenient for construction workers to slide their hands or hooks along the inner wall of the limiting groove to the bottom of the connector and pull the connector out of the limiting groove.

[0013] Preferably, the ratio of the length of the first sub-cavity to the length of the second sub-cavity is 2:1.

[0014] With this invention, a spring is installed inside the first cavity. When the prefabricated staircase is lifted, the fixing block is pressed against the lower end of the annular partition, and the mounting ring will press the spring. The moving length of the fixing block and the mounting ring is the same. At this time, the fixing block is blocked by the annular partition and cannot move, thereby preventing the mounting ring from continuing to move and squeezing and damaging the spring.

[0015] Preferably, the connecting rod is made of stainless steel, and the sealing block, sealing ring and connecting sleeve are welded together.

[0016] With this utility model, the connector, mounting ring, and fixing block are all welded to the telescopic rod. After the construction personnel install the telescopic rod, mounting ring, and fixing block into the connecting sleeve, the first and second sub-cavities are sealed by welding sealing rings and sealing blocks to both ends of the connecting sleeve. Finally, the connector and telescopic rod are welded to complete the installation of the main body of the embedded part. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation position of the embedded part in Example 1.

[0018] Figure 2 This is a schematic diagram of the main body of the embedded part in Example 1.

[0019] Figure 3 This is an exploded view of the main body of the embedded part in Example 1.

[0020] Figure 4 This is a cross-sectional view of the prefabricated staircase in Example 1.

[0021] Figure 5 This is a cross-sectional view of the main body of the embedded part in Example 1. Detailed Implementation

[0022] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0023] Example 1 like Figure 1-5 As shown, this embodiment provides a prefabricated staircase hoisting structure, including a limiting groove 120 set at the step of the prefabricated staircase 110. The bottom of the limiting groove 120 is provided with an embedded part body 130 connected to the prefabricated staircase 110. The embedded part body 130 includes a connecting rod 210 embedded inside the prefabricated staircase 110. The limiting groove 120 is provided with a connector 220 for connecting with the hoist. An adjustment mechanism is provided between the connector 220 and the connecting rod 210. The adjustment mechanism is used to make the connector 220 extend into the limiting groove 120 when the hoist lifts the prefabricated staircase 110.

[0024] In this embodiment, when hoisting the precast staircase 110, the construction workers first attach one end of the hoisting rope to the crane hook, and then connect the other end of the hoisting rope to the connector 220. When the construction workers connect the hook and the connector 220, they first pull the connector 220. At this time, the connector 220 rises, thereby driving the telescopic rod 330 and the fixing block 340 to rise, until the fixing block 340 is pressed against the bottom of the annular partition 520 and the connector 220 extends out of the limiting groove 120. After the connector 220 extends out of the limiting groove 120, the construction workers lock the connector 220 onto the hook, completing the connection. Since the connector 220 is pulled out of the limiting groove 120 by the construction workers, interference from the limiting groove 120 is avoided, thus facilitating the construction workers to quickly connect the hook and the connector 220. After the connector 220 and the hanger are connected, the construction workers start the crane to lift the precast staircase 110 to the construction site. Finally, the connector 220 and the hanger are released. When the connector 220 and the hanger are separated, the spring 310 in the first sub-cavity 510 will squeeze the mounting ring 320, thereby pushing the mounting ring 320 and the telescopic rod 330 downward, so that the connector 220 returns to the limiting groove 120. At this time, the connector 220 will not protrude from the surface of the precast staircase 110, thus not hindering the construction workers from walking on the precast staircase 110. After the precast staircase 110 is completed, cement is poured into the limiting groove 120 to bury the connector 220, and finally the surface of the precast staircase 110 is leveled. During this process, the connector 220 can be removed from the surface of the precast staircase 110 without cutting or hammering, thus not damaging the precast staircase 110.

[0025] In this embodiment, the connecting rod 210 includes a connecting sleeve 360, and the inner sidewall of the connecting sleeve 360 ​​expands inward in the circumferential direction to form an annular partition 520; the annular partition 520 divides the interior of the connecting sleeve 360 ​​into a first sub-cavity 510 and a second sub-cavity 530; one end of the connecting sleeve 360 ​​is provided with a blocking block 370 for blocking the second sub-cavity 530, and the other end is provided with a blocking ring 350 for blocking the first sub-cavity 510; The adjustment mechanism includes a telescopic rod 330 that passes through the sealing ring 350, the first sub-cavity 510, and the annular partition 520 in sequence and extends into the second sub-cavity 530; the outer wall of one end of the telescopic rod 330 extending into the second sub-cavity 530 expands outward in the circumferential direction to form a fixing block 340; the end of the telescopic rod 330 away from the fixing block 340 is connected to the connector 220.

[0026] In this embodiment, the prefabricated staircase 110 has two embedded main bodies 130 at both ends. When the prefabricated staircase 110 is hoisted, it is lifted by four hoisting ropes. When the hoisting ropes pull up the connector 220, the fixing block 340 at the lower end of the telescopic rod 330 abuts against the lower end of the annular partition 520. Since the annular partition 520 and the connecting sleeve 360 ​​are formed as one piece, the connection strength between the connecting sleeve 360 ​​and the annular partition 520 is better improved, preventing the annular partition 520 from breaking between the annular partition 520 and the connecting sleeve 360 ​​due to the excessive weight of the prefabricated staircase 110 itself when it is hoisted.

[0027] In this embodiment, the telescopic rod 330 is provided with an installation ring 320 connected to the telescopic rod 330 at the side wall inside the first sub-cavity 510, and a spring 310 sleeved on the telescopic rod 330 is provided between the installation ring 320 and the sealing ring 350.

[0028] In this embodiment, during the transportation and stacking of the prefabricated staircase 110, the spring 310 will always compress the mounting ring 320, so that the mounting ring 320 presses on the annular spacer 520, thereby ensuring that the connector 220 is always located within the limiting groove 120, thus preventing collisions during the transportation and stacking of the prefabricated staircase 110, which could damage the connector 220 and affect the hoisting.

[0029] In this embodiment, the limiting groove 120 has a semi-circular cross-section.

[0030] In this embodiment, the cross-section of the limiting groove 120 is semi-circular, making the inner wall of the limiting groove 120 arc-shaped, which makes it convenient for construction personnel to slide their hands or hooks along the inner wall of the limiting groove 120 to the bottom of the connector 220 and pull the connector 220 out of the limiting groove 120.

[0031] In this embodiment, the ratio of the length of the first sub-cavity 510 to the length of the second sub-cavity 530 is 2:1.

[0032] In this embodiment, a spring 310 is provided inside the first sub-cavity 510. Therefore, when the prefabricated staircase 110 is lifted, the fixing block 340 abuts against the lower end of the annular spacer 520, and the mounting ring 320 will press the spring 310. The moving lengths of the fixing block 340 and the mounting ring 320 are the same. At this time, the fixing block 340 is blocked by the annular spacer 520 and cannot move, thereby preventing the mounting ring 320 from continuing to move and squeezing and damaging the spring 310.

[0033] In this embodiment, the connecting rod 210 is made of stainless steel, and the sealing block 370, sealing ring 350 and connecting sleeve 360 ​​are welded together.

[0034] In this embodiment, the connector 220, mounting ring 320, and fixing block 340 are all welded to the telescopic rod 330. After the construction personnel install the telescopic rod 330, mounting ring 320, and fixing block 340 into the connecting sleeve 360, the first sub-cavity 510 and the second sub-cavity 530 are sealed by welding the sealing ring 350 and sealing block 370 to both ends of the connecting sleeve 360. Finally, the connector 220 and the telescopic rod 330 are welded to complete the installation of the embedded part body 130.

[0035] When installing the embedded part body 130 inside the precast staircase 110, the embedded part body 130 needs to be welded or tied to the steel reinforcement frame before the precast staircase 110 is poured. Then, concrete is poured into the mold. After the concrete solidifies, the steel reinforcement frame and the embedded part body 130 are embedded together in the precast staircase 110 to form an integral structure with the precast staircase 110.

[0036] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0037] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pre-fabricated stair hoisting structure, characterized by: The device includes a limiting groove (120) set at the step of the precast staircase (110). The bottom of the limiting groove (120) is provided with an embedded part body (130) connected to the precast staircase (110). The embedded part body (130) includes a connecting rod (210) embedded inside the precast staircase (110). The limiting groove (120) is provided with a connector (220) for connecting with the hook. An adjustment mechanism is provided between the connector (220) and the connecting rod (210). The adjustment mechanism is used to make the connector (220) extend into the limiting groove (120) when the hook lifts the precast staircase (110).

2. A pre-fabricated stair hoisting structure according to claim 1, characterized in that: The connecting rod (210) includes a connecting sleeve (360), the inner wall of the connecting sleeve (360) expands inward in the circumferential direction to form an annular partition (520); the annular partition (520) divides the interior of the connecting sleeve (360) into a first sub-cavity (510) and a second sub-cavity (530); one end of the connecting sleeve (360) is provided with a sealing block (370) for sealing the second sub-cavity (530), and the other end is provided with a sealing ring (350) for sealing the first sub-cavity (510); The adjustment mechanism includes a telescopic rod (330) that passes through the sealing ring (350), the first sub-cavity (510), and the annular partition (520) in sequence and extends into the second sub-cavity (530); the outer wall of the telescopic rod (330) extending into the second sub-cavity (530) expands outward in the circumferential direction to form a fixing block (340); the end of the telescopic rod (330) away from the fixing block (340) is connected to the connector (220).

3. A pre-fabricated stair hoisting structure according to claim 1, characterized in that: The telescopic rod (330) is provided with an installation ring (320) connected to the telescopic rod (330) at the side wall inside the first sub-cavity (510). A spring (310) is provided between the installation ring (320) and the sealing ring (350) and sleeved on the telescopic rod (330).

4. A pre-fabricated stair hoisting structure according to claim 1, characterized in that: The limiting groove (120) has a semi-circular cross-section.

5. A pre-fabricated stair hoisting structure according to claim 2, characterized in that: The length ratio of the first sub-cavity (510) to the length of the second sub-cavity (530) is 2:

1.

6. A pre-fabricated stair hoisting structure according to claim 2, characterized in that: The connecting rod (210) is made of stainless steel and is welded to the sealing block (370), sealing ring (350) and connecting sleeve (360).

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