A safety line fixing device for use under a concrete structure beam

Abstract

The utility model discloses a kind of safety rope fixing devices for concrete structure beam under, it is related to safety rope fixing technical field, including main support and inner support, two main supports are symmetrically slidably arranged in the both sides of inner support, the sliding connection of main support and inner support is correspondingly provided with several variable cross-section reserved holes, bolt is fixed with fixed screw rod in variable cross-section reserved hole, the bottom end of fixed screw rod is fixedly installed with hanging rope ring;First, the position of hanging rope ring is adjusted and fixed according to beam width;Then by pulling and loosening tight bolt, the self-locking effect of wedge inclined plane under the action of spring is utilized to realize preliminary clamping;Finally, by tightening fastening bolt, drive tight steel plate to compress beam bottom, so that the device obtains final stable connection. Can effectively resist impact and sway, greatly improve safety guarantee.

Description

Technical Field

[0001] This utility model relates to the field of safety rope fixing technology, and more specifically, it relates to a safety rope fixing device for use under concrete structural beams. Background Technology

[0002] During the construction of building projects, especially foundation pits and main structures, it is often necessary to install temporary facilities such as lighting fixtures on site. These temporary facilities are either installed on the support beams inside the foundation pit or on the main columns or beams. This often requires drilling holes in the columns or beams for attachment, which can damage their structure, or attaching them by binding with ropes. This poses significant safety hazards in scenarios such as typhoons, and temporary facilities are even more inconvenient in scenarios where they need to be moved and arranged repeatedly.

[0003] A search revealed a Chinese patent disclosure for a beam clamping device (authorization announcement number CN113152889A), comprising a beam side upright, positive and negative threads, M16 bolt A, a diagonal brace, an M22 locking bolt, a double-ear sleeve, an M16 bolt B, a spring, a T-shaped sleeve, an M24 right-hand nut, and an M24 left-hand nut. The beam side upright is connected to the positive and negative threads in the middle and to the diagonal brace at the bottom, used to secure the beam side formwork; the positive and negative threads... However, this device is prone to slippage when directly applied to relatively smooth concrete surfaces; and lacks a continuously self-tightening safety structure, resulting in low stability. Therefore, a safety rope fixing device for concrete structural beams is needed. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a safety rope fixing device for concrete structural beams to solve the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a safety rope fixing device for concrete structural beams, comprising a main support and an inner support. The two main supports are symmetrically and slidably arranged on both sides of the inner support. Several variable cross-section reserved holes are correspondingly opened at the sliding connection between the main supports and the inner support. Fixing screws are bolted in the variable cross-section reserved holes, and rope hanging rings are fixedly installed at the bottom ends of the fixing screws. First wedge blocks are fixedly installed on the opposite surfaces of the two main supports. Tightening bolts are bolted to the bottom sides of the two main supports. Second wedge blocks are fixedly installed at the top ends of the tightening bolts. The inclined surfaces of the first wedge blocks and the second wedge blocks are fitted together. A fastening bolt is bolted to the middle position of the inner support, and a tightening steel plate is fixedly installed at the top end of the fastening bolt.

[0006] The present invention is further configured such that a first self-tightening spring is sleeved on the outside of the tightening bolt, one end of the first self-tightening spring abuts against the second wedge block, and the other end of the first self-tightening spring abuts against the inner bottom surface of the main bracket.

[0007] The present invention is further configured such that a second self-tightening spring is sleeved on the outside of the fastening bolt, one end of the second self-tightening spring abuts against the top steel plate, and the other end of the second self-tightening spring abuts against the upper end surface of the inner bracket.

[0008] The present invention is further provided that a rubber pad is fixedly installed on the top of the clamping steel plate.

[0009] The present invention is further configured such that the main support is an L-shaped square tube, and one end of the bottom side of the main support is slidably sleeved on the outside of the inner support.

[0010] (III) Beneficial Effects Compared with the prior art, this utility model provides a safety rope fixing device for concrete structure beams, which has the following advantages: This safety rope fixing device for concrete structural beams consists of a main support, an inner support, a fixing screw with a rope loop, a variable cross-section pre-drilled hole, a wedge block assembly driven by a tightening bolt, and a tightening steel plate driven by a fastening bolt and a self-tightening spring. First, the position of the rope loop is adjusted and fixed according to the beam width. Then, by pulling and loosening the tightening bolt, the wedge block's inclined surface achieves initial clamping using the self-locking effect of the spring. Finally, by tightening the fastening bolt, the tightening steel plate is driven to press against the bottom of the beam, achieving a final, stable connection. This multi-stage locking mechanism ensures high overall stability, effectively resisting impacts and shaking, and enhancing safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure from the front view of this utility model; Figure 2 This is a cross-sectional view of the present invention. Figure 3 This is a side view of the structure of this utility model.

[0012] Reference numerals in the attached drawings: 1. Main support; 2. Inner support; 3. Variable cross-section reserved hole; 4. Fixing screw; 5. Hanging rope ring; 6. First wedge block; 7. Tightening bolt; 8. Fastening bolt; 9. Tightening steel plate; 10. Second wedge block; 11. First self-tightening spring; 12. Second self-tightening spring; 13. Concrete structural beam. Detailed Implementation

[0013] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0014] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0015] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0016] Please see Figures 1-3 A safety rope fixing device for concrete structural beams includes a main support 1 and an inner support 2. The two main supports 1 are symmetrically slidably arranged on both sides of the inner support 2, and several variable cross-section pre-drilled holes 3 are correspondingly provided at the sliding connection points between the main supports 1 and the inner support 2. This allows the device to adapt to concrete beams of different widths, improving its versatility.

[0017] A fixing screw 4 is fixed in the pre-drilled hole 3 of the variable cross-section, and a hanging rope ring 5 is fixedly installed at the bottom end of the fixing screw 4. This provides a safe and reliable hanging rope point, and the installation position is adjustable for easy use.

[0018] Two main support brackets 1 are each fixedly mounted with a first wedge block 6 on their opposite surfaces. Two main support brackets 1 are each bolted with a tightening bolt 7 on their bottom sides. A second wedge block 10 is fixedly mounted on the top of each tightening bolt 7. The inclined surfaces of the first wedge block 6 and the second wedge block 10 are fitted together. A first self-tightening spring 11 is sleeved on the outside of the tightening bolt 7. One end of the first self-tightening spring 11 abuts against the second wedge block 10, and the other end abuts against the inner bottom surface of the main support bracket 1. Through the wedge block engagement and spring preload, an initial clamping force can be quickly generated, achieving self-locking and simplifying the installation operation.

[0019] A fastening bolt 8 is bolted to the middle of the inner support 2, and a clamping steel plate 9 is fixedly installed at the top of the fastening bolt 8. A second self-tightening spring 12 is sleeved on the outside of the fastening bolt 8. One end of the second self-tightening spring 12 abuts against the clamping steel plate 9, and the other end abuts against the upper end face of the inner support 2. A rubber pad is fixedly installed at the top of the clamping steel plate 9. The bolt provides the final stable fastening force, while the spring and rubber pad buffer vibration and increase friction, ensuring that the device is tightly fixed to the beam and preventing slippage and damage to the beam surface.

[0020] The main support 1 is an L-shaped square tube, with one bottom end slidingly fitted onto the outside of the inner support 2. Anti-slip textures are provided on the contact surfaces of the main support 1 and the inner support 2. The L-shaped structure provides a stable support base, and the sliding fit ensures smooth expansion and contraction adjustments as well as overall structural stability.

[0021] Working principle: Before using the safety rope fixing device, the rope ring 5 and its connected fixing screw 4 should be inserted into the corresponding variable cross-section reserved holes 3 on the main support 1 and the inner support 2 according to the actual cross-sectional width of the concrete structure beam 13, and the nuts should be used to initially tighten them to complete the initial width adjustment of the device. Subsequently, the adjusted device is placed at the bottom of the concrete beam to be installed. The operator needs to pull the tightening bolts 7 on the two main supports 1 outward. This action will cause the second wedge block 10 fixed thereto to move against the elastic force of the first self-tightening spring 11, thus reserving space for the inclined surfaces of the first wedge block 6 and the second wedge block 10 to engage. Then, the entire device is pushed upward so that the tightening steel plate 9 on the inner support 2 is pressed tightly against the concrete surface at the bottom of the beam. Then, the previously pulled tightening bolts 7 are slowly released. Under the restoring force of the first self-tightening spring 11, the second wedge block 10 will reset and fit tightly against the inclined surface of the first wedge block 6. By using the wedge principle, a preliminary clamping force pointing towards the beam side is generated, so that the device achieves preliminary self-locking fixation at the bottom of the beam and generates the necessary initial friction force. After initial fixation, use a wrench to tighten the fastening bolt 8 located in the middle of the inner bracket 2. This operation drives the clamping steel plate 9 to continuously press against the bottom of the beam. At the same time, the second self-tightening spring 12 sleeved on the fastening bolt 8 is compressed. Its accumulated elastic force and the mechanical tightening force of the bolt work together to ensure the durability and stability of the tightening force. As the tightening torque gradually increases until it reaches the preset design requirement value, the pressing force of the clamping steel plate 9 on the bottom of the beam and the clamping force of the wedge blocks on both sides on the sides of the beam both reach the working state, and the device is completely fastened to the beam. Finally, reliably pass the safety rope through and fix it in the hanging rope ring 5, thus completing the entire installation process.

[0022] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety rope fixing device for use under concrete structural beams, comprising a main support (1) and an inner support (2), characterized in that, Two main supports (1) are symmetrically slidably arranged on both sides of the inner support (2). Several variable cross-section reserved holes (3) are opened at the sliding connection between the main supports (1) and the inner support (2). A fixing screw (4) is fixed in the variable cross-section reserved hole (3). A hanging rope ring (5) is fixedly installed at the bottom end of the fixing screw (4). A first wedge block (6) is fixedly installed on the opposite surface of the two main supports (1). A tightening bolt (7) is fixedly installed on the bottom side of the two main supports (1). A second wedge block (10) is fixedly installed at the top of the tightening bolt (7). The inclined surfaces of the first wedge block (6) and the second wedge block (10) are fitted together. A fastening bolt (8) is fixedly installed in the middle position of the inner support (2). A tightening steel plate (9) is fixedly installed at the top end of the fastening bolt (8).

2. The safety rope fixing device for concrete structural beams according to claim 1, characterized in that: The outer side of the tightening bolt (7) is fitted with a first self-tightening spring (11), one end of the first self-tightening spring (11) abuts against the second wedge block (10), and the other end of the first self-tightening spring (11) abuts against the inner bottom surface of the main bracket (1).

3. A safety rope fixing device for concrete structural beams according to claim 1, characterized in that: A second self-tightening spring (12) is sleeved on the outside of the fastening bolt (8). One end of the second self-tightening spring (12) abuts against the top steel plate (9), and the other end of the second self-tightening spring (12) abuts against the upper end face of the inner bracket (2).

4. A safety rope fixing device for concrete structural beams according to claim 1, characterized in that: A rubber pad is fixedly installed at the top of the top clamping steel plate (9).

5. A safety rope fixing device for concrete structural beams according to claim 1, characterized in that: The main support (1) is an L-shaped square tube, and one end of the bottom side of the main support (1) is slidably sleeved on the outside of the inner support (2).

6. A safety rope fixing device for concrete structural beams according to claim 1, characterized in that: The contact surfaces of the main support (1) and the inner support (2) are provided with anti-slip textures.

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