Prefabricated stair lifting point reinforcing device

Abstract

The utility model discloses a prefabricated stair lifting point reinforcing device, belongs to the technical field of lifting machine accessories, and provides a prefabricated stair lifting point reinforcing device capable of reducing transportation damage. The prefabricated stair lifting point reinforcing device comprises a traction piece, the traction piece is provided with a sliding rod part, and the sliding rod part is sleeved with a force application piece which is suitable for being attached to the lower surface of a prefabricated stair; the lower end of the sliding rod part is fixedly connected with a bearing part, a spring is arranged between the bearing part and the force applying part, the upper end of the sliding rod part is fixedly connected with a screw rod part, the screw rod part is in external thread fit with an adjusting part and is suitable for being attached to the upper surface of the prefabricated stair, and the upper end of the screw rod part is fixedly connected with a hook part; the adjusting part is suitable for sliding along the hook part after being separated from the screw rod part. According to the utility model, the force application piece structure made of the spring is designed to provide elasticity for the prefabricated floor slab, so that the floor slab is not in hard contact with other floor slabs or a hoisting device in the transportation process, the damage caused by shaking in the transportation process is greatly reduced, and the quality of the prefabricated floor slab is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of lifting machinery accessories, and in particular to a prefabricated stair lifting point reinforcement device. Background Art

[0002] In projects that require stairs, in order to improve construction efficiency, standard unified stairs pre-customized by the factory are often used. These prefabricated stairs need to be transported from the factory to the construction site. The traditional way is to stack the prefabricated stairs directly, but the upper surface of the prefabricated stairs is not flat, which leads to a relatively large contact stress between the stacked prefabricated stairs, which is easy to cause bumps and damages during transportation, affecting the quality and aesthetics of the prefabricated stairs. Summary of the invention

[0003] The purpose of the present application is to provide a prefabricated staircase hanging point reinforcement device that can reduce transportation damage.

[0004] To achieve the above objectives, the present application provides a prefabricated stair hanging point reinforcement device: comprising a traction member, the traction member having a sliding rod portion, the sliding rod portion having an outer sleeve provided with a force-applying member suitable for attaching to the lower surface of the prefabricated staircase, the lower end of the sliding rod portion being fixedly connected to a supporting portion, a spring being arranged between the supporting portion and the force-applying member, the upper end of the sliding rod portion being fixedly connected to a screw portion, the external thread of the screw portion being equipped with an adjusting member suitable for attaching to the upper surface of the prefabricated staircase, the upper end of the screw portion being fixedly connected to a hook portion, the adjusting member being suitable for sliding along the hook portion after being detached from the screw portion, thereby facilitating the installation and removal of the adjusting member.

[0005] As a preference, the force-applying member comprises a supporting ring, a sliding hole penetrating the upper and lower end surfaces is provided in the center of the supporting ring, and is suitable for cooperating with the sliding rod portion to form a sliding pair, thereby limiting the movement freedom of the force-applying member.

[0006] As a preference, a limiting ring is fixedly connected between the sliding rod portion and the screw rod portion, and the diameter of the limiting ring is larger than the inner diameter of the sliding hole to prevent the force applying member from slipping off the upper end of the sliding rod portion.

[0007] Preferably, a gasket is fixedly connected to the upper surface of the support ring, and a clearance groove penetrating the upper and lower end surfaces is opened in the center of the gasket, the inner diameter of the clearance groove is equal to the diameter of the limiting ring, and the limiting ring can be sunk into the clearance groove and in close contact with the support ring.

[0008] As a preferred embodiment, the spring is sleeved outside the sliding rod part, the outer side surface of the supporting part has a lower retaining ring extending upward, suitable for being sleeved outside the lower end of the spring, and the lower end surface of the supporting ring has an upper retaining ring, suitable for being sleeved outside the upper end of the spring, so as to ensure the stability of the spring.

[0009] Preferably, the cross-sectional diameter of the hook portion is smaller than that of the screw portion, and the minimum distance between the end face and the side face of the hook portion is greater than the maximum distance between the inner and outer walls of the adjusting member, so as to facilitate insertion and removal of the adjusting member.

[0010] As a preferred embodiment, an internal screw hole penetrating the upper and lower end surfaces is opened in the center of the adjusting member, which is suitable for cooperating with the external thread on the outer side surface of the screw portion, taking into account both labor-saving tightening and stability when loosening.

[0011] Preferably, the outer surface of the adjusting member has a pair of symmetrical ear plates as force-bearing parts for applying torque to the adjusting member.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By designing a force-applying member structure made of springs to provide elasticity to the prefabricated floor slabs, the floor slabs will not come into hard contact with other floor slabs or lifting devices during transportation, greatly reducing the damage caused by shaking during transportation and ensuring the quality of the prefabricated floor slabs;

[0014] (2) By arranging an adjusting member outside the traction member, the force-applying member can be used to apply a clamping force to the prefabricated floor slab body, which has a good limiting and stabilizing effect on the prefabricated floor slab during transportation, and will not be scratched due to relative contact. The prefabricated floor slabs can be stacked layer by layer to fully utilize the transportation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the prefabricated staircase hanging point reinforcement device;

[0016] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the prefabricated staircase hanging point reinforcement device;

[0017] Figure 3 A schematic diagram of the three-dimensional structure of the spring of the prefabricated staircase hanging point reinforcement device being arranged on the traction member;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the traction member of the prefabricated staircase hanging point reinforcement device;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the force-applying member of the prefabricated staircase hanging point reinforcement device;

[0020] Figure 6 A three-dimensional structural cross-sectional view of a force-applying member of the prefabricated staircase hanging point reinforcement device;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the adjusting member of the prefabricated staircase hanging point reinforcement device;

[0022] Figure 8 This is a three-dimensional structural cross-sectional view of the adjusting component of the prefabricated staircase hanging point reinforcement device.

[0023] In the figure: 1. traction member; 101. slide rod; 102. limit ring; 103. support part; 104. lower retaining ring; 105. screw rod; 106. hook part; 2. adjustment member; 201. inner screw hole; 202. ear plate; 3. spring; 4. force member; 401. support ring; 402. slide hole; 403. washer; 404. clearance groove; 405. upper retaining ring. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] like Figure 1-8The prefabricated stair hanging point reinforcement device shown includes a traction member 1 made of an alloy material. The traction member 1 generally needs to be formed through process steps such as casting, cutting and bending. The traction member 1 has a cylindrical sliding rod portion 101, and a coaxial force-applying member 4 is arranged on the outer sleeve of the sliding rod portion 101. The specific structure of the force-applying member 4 includes a supporting ring 401. A sliding hole 402 that passes through the upper and lower end surfaces is opened in the center of the supporting ring 401. The inner diameter of the sliding hole 402 is slightly larger than the sliding rod portion 101, and it just cooperates with the sliding rod portion 101 to form a sliding pair. The upper surface of the supporting ring 401 is fixedly connected with a washer 403. The washer 403 is made of rubber material and can be attached to the lower surface of the prefabricated staircase, thereby avoiding hard contact between the supporting ring 401 made of alloy and the prefabricated staircase made of concrete, thereby reducing unnecessary friction.

[0029] The lower end of the slide bar portion 101 is fixedly connected with a supporting portion 103. In fact, the supporting portion 103 and the slide bar portion 101 are an integrated structure, with the same material and uniform density. The transition is rounded, the force is uniform, and the structural strength is high. A spring 3 is arranged between the supporting portion 103 and the force-applying member 4. The spring 3 is a relatively hard spring 3 with a relatively large elastic modulus. The spring 3 can withstand a large pressure and can provide a stable support for the prefabricated stairs. The spring 3 is sleeved outside the slide bar portion 101, which can well limit the relative position of the spring 3. The outer side surface of the supporting portion 103 has a lower retaining ring 104 extending upward, which is used to be sleeved outside the lower end of the spring 3. The lower end surface of the supporting ring 401 has an upper retaining ring 405, which is used to be sleeved outside the upper end of the spring 3. In this way, the upper and lower ends of the spring 3 are restricted, so the stability of the spring 3 after installation can be further improved.

[0030] The upper end of the slide bar 101 is fixedly connected with a screw portion 105, which is coaxial with the slide bar 101 and has the same diameter. A coaxial limiting ring 102 is also fixedly connected between the slide bar 101 and the screw portion 105. The diameter of the limiting ring 102 is significantly larger than the diameter of the two, and the diameter of the limiting ring 102 is also larger than the inner diameter of the sliding hole 402, which is used to prevent the force-applying member 4 from detaching from the upper end of the slide bar 101. The limiting ring 102 and the screw portion 105 are an integrated structure. After the force-applying member 4 is sleeved on the slide bar 101, the limiting ring 102 and the slide bar 101 are connected by hot-melt reshaping. When connected together, a clearance groove 404 is provided in the center of the gasket 403, which runs through the upper and lower end surfaces. The inner diameter of the clearance groove 404 is equal to the diameter of the limiting ring 102. Therefore, the limiting ring 102 can sink into the clearance groove 404. When the reinforcement device is not used, the force-applying member 4 can be tightly attached to the limiting ring 102, and the shaking can be well limited under the constraint of the gasket 403 with a certain thickness. On the other hand, the diameter of the limiting ring 102 will be smaller than the inner diameter of the lifting hole provided on the prefabricated stairs, so that the limiting ring 102 can penetrate into the lifting hole of the prefabricated stairs, allowing the force-applying member 4 to support the bottom surface of the prefabricated stairs.

[0031] The external thread of the screw part 105 is matched with an adjusting member 2. The outer diameter of the adjusting member 2 should be larger than the inner diameter of the lifting hole on the prefabricated staircase so that it can be attached to the upper surface of the prefabricated staircase to apply a downward restraining force to the prefabricated staircase. An internal screw hole 201 that passes through the upper and lower end surfaces is provided in the center of the adjusting member 2, which just matches the external thread of the outer side of the screw part 105, and is used to convert the rotational motion of the adjusting member 2 into an up and down motion relative to the screw part 105. The outer surface of the adjusting member 2 has a pair of symmetrical ear plates 202, which obviously protrude from the outer surface of the circular pancake-shaped adjusting member 2, and serve as a force-bearing part for applying torque to the adjusting member 2. The upper end of the screw part 105 is fixedly connected with a hook part 106 for contacting with the lifting device. The hook is buckled, thereby providing an upward pulling force to the prefabricated staircase. It should be noted that the hook portion 106 can also pass through the lifting hole opened on the prefabricated staircase. Therefore, the size of the adjusting member 2 is larger than the hook portion 106. The adjusting member 2 can slide along the hook portion 106 after being separated from the screw portion 105, that is, the hook portion 106 can be inserted into the inner screw hole 201 of the adjusting member 2. In order to achieve this effect, it is necessary to limit the cross-sectional diameter of the hook portion 106 to be smaller than the cross-sectional diameter of the screw portion 105, and the minimum distance between the end face and the side face of the hook portion 106 is greater than the maximum distance between the inner and outer walls of the adjusting member 2, so that the adjusting member 2 can slide off the hook portion 106 after being separated from the screw portion 105.

[0032] Working principle: This reinforcement device is mainly used for hoisting in prefabricated stair transportation projects. Therefore, when using the reinforcement device, you will see many layers of prefabricated stairs. There will be a certain interval between these prefabricated stairs for buffering and configuring the proposed reinforcement device and hook structure. Before configuring the prefabricated stairs with the reinforcement device, the adjusting member 2 needs to be separated from the traction member 1, and the hook portion 106 of the traction member 1 is inserted from the lower end of the preset lifting hole of the stairs and then passed out from the upper end until the screw portion 105 leaks out of the preset lifting hole of the stairs, and then the adjusting member 2 is slid in from the end of the hook portion 106 until the adjusting member 2 cooperates with the screw portion 105, and then the spring 3 is tightened to compress the force-applying member 4 to fit tightly against the lower surface of the prefabricated stairs, and the reinforcement device will be fastened to the prefabricated stairs. , then the hook of the lifting device can be engaged with the hook part 106 at the upper end of the reinforcement device. After the prefabricated stairs are lifted, the spring 3 is pressed by its own gravity, and the height of the force-applying member 4 relative to the sliding rod part 101 will also drop. In this way, the upper surface of the prefabricated floor slab will naturally form a buffer space with the lower surface of the adjusting member 2. Even if the lifting device is lifted or shaken quickly, the prefabricated floor slab will not be subjected to a large impact force. Therefore, the reinforcement device can better protect the prefabricated floor slab during lifting. An additional hook is usually provided on the bottom surface of the supporting part 103, such as directly welding a hook to hook the hook part 106 of the reinforcement device below, so that another prefabricated floor slab can be hung below the prefabricated floor slab, and they are stacked layer by layer to make full use of the transportation space.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A prefabricated staircase hanging point reinforcement device, characterized in that: The invention comprises a traction member (1), wherein the traction member (1) has a slide rod portion (101), the slide rod portion (101) is provided with a force-applying member (4) on its outer sleeve and is suitable for being attached to the lower surface of a prefabricated staircase, the lower end of the slide rod portion (101) is fixedly connected to a supporting member (103), a spring (3) is provided between the supporting member (103) and the force-applying member (4), the upper end of the slide rod portion (101) is fixedly connected to a screw rod portion (105), the screw rod portion (105) is externally threaded with an adjusting member (2) and is suitable for being attached to the upper surface of a prefabricated staircase, the upper end of the screw rod portion (105) is fixedly connected to a hook portion (106), and the adjusting member (2) is suitable for sliding along the hook portion (106) after being detached from the screw rod portion (105).

2. The prefabricated staircase hanging point reinforcement device according to claim 1, characterized in that: The force-applying member (4) comprises a supporting ring (401), the center of which is provided with a sliding hole (402) penetrating the upper and lower end surfaces, suitable for cooperating with the sliding rod portion (101) to form a sliding pair.

3. The prefabricated staircase hanging point reinforcement device according to claim 2, characterized in that: A limit ring (102) is fixedly connected between the sliding rod portion (101) and the screw rod portion (105), and the diameter of the limit ring (102) is greater than the inner diameter of the sliding hole (402).

4. The prefabricated staircase hanging point reinforcement device according to claim 3, characterized in that: A gasket (403) is fixedly connected to the upper surface of the support ring (401), and a clearance groove (404) penetrating the upper and lower end surfaces is provided in the center of the gasket (403), and the inner diameter of the clearance groove (404) is equal to the diameter of the limiting ring (102).

5. The prefabricated staircase hanging point reinforcement device according to claim 4, characterized in that: The spring (3) is sleeved outside the sliding rod portion (101), the outer side surface of the supporting portion (103) has a lower retaining ring (104) extending upward, suitable for being sleeved outside the lower end of the spring (3), and the lower end surface of the supporting ring (401) has an upper retaining ring (405) suitable for being sleeved outside the upper end of the spring (3).

6. The prefabricated staircase hanging point reinforcement device according to any one of claims 1 to 5, characterized in that: The cross-sectional diameter of the hook portion (106) is smaller than the cross-sectional diameter of the screw portion (105), and the minimum distance between the end face and the side face of the hook portion (106) is greater than the maximum distance between the inner and outer walls of the adjusting member (2).

7. The prefabricated staircase hanging point reinforcement device according to claim 6, characterized in that: An internal screw hole (201) penetrating the upper and lower end surfaces is provided at the center of the adjusting member (2), and is suitable for cooperating with the external screw thread on the outer side surface of the screw rod portion (105).

8. The prefabricated staircase hanging point reinforcement device according to claim 7, characterized in that: The outer surface of the adjusting member (2) has a pair of symmetrical ear plates (202).

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