A new type of non-destructive anchoring device for steel trestle plate

Abstract

The utility model discloses a novel steel trestle board nondestructive anchoring device relates to deep foundation pit engineering construction technical field, including steel trestle board and stand column mechanism, the steel trestle board includes panel, steel rib, foot hole, hoist hole and cover steel sheet, the foot hole is set up in the middle part of steel trestle board, the utility model discloses through cover steel sheet dispersion stress, mechanical bolt fixed and " cross buckle " positioning, whole need not welding operation, avoid destroying the structural integrity of steel trestle board, and dismounts after the steel trestle board unharmed, can repeatedly put into follow -on project, reduce construction loss cost greatly, improve the economic benefit and the service life of steel trestle board, the " cross buckle " of stand column mechanism and steel rib accurate occlusion, cooperate high -strength alloy fastening bolt and " locknut + locknut " double -nut fixed, form the double restriction of horizontal anti -deflection, vertical displacement prevention, effectively solve the problem of ordinary non -fixed mode stability deficiency, reduce the safety hidden danger of construction site.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit engineering construction technology, specifically a novel non-destructive anchoring device for steel trestle decks. Background Technology

[0002] In the construction of deep foundation pits in building engineering, steel trestle decks have been widely replaced by concrete trestle decks as support trestle decks for the foundation pit stage due to their convenient disassembly and assembly and significant economic benefits. However, after the installation of steel trestle decks, the steel plate surface cannot be used to set up safety protection sheds or edge protection in the same way as traditional concrete trestle decks.

[0003] Existing anchoring solutions have significant drawbacks: ordinary unfixed placement lacks stability and can easily lead to safety hazards on construction sites; while welding fixation can ensure connection strength, it will damage the structural integrity of the steel trestle, affect its reusability, and increase construction costs. Therefore, there is an urgent need for an anchoring device that combines safety, non-destructive nature, and convenience to solve the above problems. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a novel non-destructive anchoring device for steel trestle decks to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel non-destructive anchoring device for steel trestle decks, comprising steel trestle decks and column mechanisms;

[0006] The steel trestle includes a panel, steel ribs, foot holes, lifting holes, and a cover steel plate. The foot holes are located in the middle of the steel trestle, and the cover steel plate is fixed to the steel trestle at the bottom of the foot holes. The cover steel plate is made of the same material as the steel trestle and fits tightly. Bolt holes are pre-set on the cover steel plate.

[0007] The steel cladding plate and the steel trestle plate are tightly bonded together by welding or bolting to form a locally reinforced structure.

[0008] The column structure includes angle steel, end cap steel plate, fastening bolts, first square steel and second square steel. There are four angle steels. The four angle steels are forged as a whole with the top and bottom end cap steel plates. The lower half of the four angle steels forms a "cross buckle" structure. Its depth matches the height of the steel rib. After the "cross buckle" structure is inserted into the foot hole, it precisely engages with the steel rib inside the steel trestle plate.

[0009] The bottom end plate has pre-drilled bolt holes, which are compatible with the bolt holes of the facing plate. The fastening bolts pass through the bolt holes of the end plate and the facing plate and are fixed by double nuts. The double nuts are a combination of anti-loosening nuts and fastening nuts. The two are sequentially fitted onto the fastening bolts and tightened. The fastening bolts are made of high-strength alloy material. The first square steel is fixed to the top end plate. The first square steel has a pre-drilled pin hole, and a fixing pin is fitted into the pin hole.

[0010] The first square steel is fitted with an extension component, which is a second square steel. After the extension component is inserted into the first square steel, the pin is fixed through the aligned pin hole and the corresponding hole of the extension component is preset.

[0011] The footing hole is equipped with a movable cover plate, which is connected to the surface of the steel trestle plate by a hinge or snap-fit ​​structure. The size of the movable cover plate is perfectly matched with the footing hole. When the movable cover plate is closed, it is flush with the surface of the steel trestle plate, ensuring that the surface of the steel trestle plate is flat.

[0012] In summary, the present invention has the following main advantages:

[0013] This utility model utilizes a steel plate to distribute stress, mechanical bolts for fixing, and a "cross buckle" for positioning, eliminating the need for welding throughout the entire process. This avoids damaging the structural integrity of the steel trestle and ensures that the trestle remains undamaged after disassembly, allowing it to be reused in subsequent projects. This significantly reduces construction costs and improves the economic efficiency and service life of the steel trestle. The "cross buckle" of the column mechanism precisely engages with the steel ribs, and is secured with high-strength alloy bolts and a double nut system of "anti-loosening nuts + tightening nuts," forming a dual constraint that resists lateral displacement and vertical shifting. The upper part uses a fixing pin to lock the second square steel, constructing a complete anchoring system. This effectively solves the problem of insufficient stability in ordinary unfixed methods, reduces safety hazards on the construction site, and ensures the safe installation of temporary components such as protective sheds and railings. Attached Figure Description

[0014] Figure 1 This is an internal plan view of the steel trestle deck of this utility model;

[0015] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0016] Figure 3 This is a schematic diagram showing the installation status of the column mechanism and steel trestle plate of this utility model;

[0017] Figure 4 This is a side view of the column mechanism of this utility model;

[0018] Figure 5 This is a bottom view of the steel trestle platform of this utility model.

[0019] In the diagram: 1. Steel trestle panel; 101. Steel rib; 102. Panel; 103. Footing hole; 104. Lifting hole; 105. Covering steel plate; 2. Column mechanism; 201. Angle steel; 202. End plate; 203. Fastening bolt; 204. First square steel; 205. Pin hole; 206. Second square steel. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The embodiments of this utility model will be described below based on its overall structure.

[0022] Example 1

[0023] like Figure 1-5 As shown, the novel steel trestle plate non-destructive anchoring device disclosed in this embodiment is based on the modular combination and mechanical fixing method to achieve non-destructive and stable connection between the steel trestle plate 1 and the temporary components. It is suitable for anchoring temporary components such as safety protection sheds and edge protection railings in deep foundation pit projects. No welding is required throughout the process, thus avoiding damage to the structural integrity of the steel trestle plate 1.

[0024] The device is mainly composed of two parts: steel trestle plate 1 and column mechanism 2. Through precise adaptation and synergistic action, each component achieves positioning, fixing, extension and hole protection functions.

[0025] The steel trestle 1 includes a panel 102, steel ribs 101, footing holes 103, lifting holes 104, and a facing steel plate 105. The footing holes 103 are located in the middle of the steel trestle 1, providing a vertical installation channel for the column mechanism 2. The facing steel plate 105 is fixed to the steel trestle 1 at the bottom of the footing holes 103, and is made of the same material as the steel trestle 1 and fits tightly to form a local reinforcement structure. It has pre-drilled bolt holes for connecting with fastening bolts 203. Movable cover plates are installed on the edges of the footing holes 103 via hinges or snap-fit ​​structures. The dimensions of the movable cover plates are perfectly matched to the footing holes 103. When closed, they are flush with the surface of the panel 102 of the steel trestle 1, ensuring a flat passage surface for the steel trestle 1. The lifting holes 104 are located at the four corners of the steel trestle 1 and are used for lifting the steel trestle 1.

[0026] The column mechanism 2 consists of four angle steels 201, end cap steel plates 202, fastening bolts 203, a first square steel 204, a fixing pin, and a second square steel (extension member) 206. The four angle steels 201 are integrally forged with the top and bottom end cap steel plates 202, and the lower half forms a "cross buckle" structure. The bottom end cap steel plate 202 has pre-drilled bolt holes that precisely match the bolt hole positions of the covering steel plate 105. The fastening bolts 203 are made of high-strength alloy material and are equipped with a double nut combination of "anti-loosening nut + fastening nut". The first square steel 204 is vertically fixed on the top end cap steel plate 202, and the side wall of the first square steel 204 has a pre-drilled pin hole 205. The extension member is the second square steel 206, whose outer diameter matches the inner diameter of the first square steel 204. After the first square steel 204 is inserted, it can be fixed by the fixing pin passing through the aligned pin hole 205 and the pre-drilled hole of the second square steel 206.

[0027] The working principle of this utility model is as follows: This novel steel trestle deck non-destructive anchoring device adopts the core design concept of "modular combination, mechanical fixing, and non-destructive adaptation". Through the synergistic effect of four core components—an additional cover plate at the bottom of the trestle deck, integrated snap-fit ​​steel column legs, high-strength bolts and fixing pins, and a flip-up cover plate—it achieves a stable connection between the steel trestle deck and temporary structures, while avoiding damage to the steel trestle deck structure. The specific working principle is as follows:

[0028] At the bottom position corresponding to the foot hole 103 in the middle of each steel trestle plate 1, a steel cover plate 105 matching the material of the steel trestle plate 1 is added. The steel cover plate 105 is tightly attached to the steel trestle plate 1 to form a local reinforcement structure. Its core functions are: first, to disperse the concentrated stress generated during the anchoring process and prevent the steel trestle plate 1 from deforming or being damaged due to excessive local stress; second, to provide a stable connection base for the fastening bolts 203 through the bolt holes preset on the steel cover plate 105, ensuring the integrity of the force transmission path when the column mechanism 2 is fixed, and improving the load-bearing capacity of the overall anchoring structure.

[0029] The column mechanism 2 is integrally forged from four angle steels 201 and its top and bottom end cap steel plates 202. It is the core load-bearing and positioning component of the device. Its lower half consists of a "cross buckle" structure composed of four angle steels 201. The depth of the cross buckle is strictly matched with the height of the steel ribs 101 of the steel trestle plate 1. When the column mechanism 2 is inserted into the foot hole 103 of the steel trestle plate 1, the cross buckle can precisely engage with the steel ribs 101 inside the steel trestle plate 1, forming a preliminary mechanical positioning and anti-lateral displacement constraint to prevent the column mechanism 2 from shifting laterally during the stress process. The bottom end cap steel plate 202 is connected to the bolt hole of the cover steel plate 105 of the steel trestle plate 1 through the reserved bolt hole, providing a support surface for the fastening bolts 203, realizing the rigid connection between the column mechanism 2 and the steel trestle plate 1, and ensuring the uniform transmission of force from the column mechanism 2 to the steel trestle plate 1.

[0030] High-strength alloy fastening bolts 203 are selected and pass through the bolt holes of the end cap steel plate 202 at the bottom of the column mechanism 2 and the covering steel plate 105 of the steel trestle plate 1. They are then tightened with double nuts. The double nut design uses a combination of "anti-loosening nut + fastening nut" to counteract the loosening tendency caused by vibration by using the friction between the nuts. On the other hand, it ensures the preload of the bolt connection through double force, so as to avoid vertical displacement of the column mechanism 2 when bearing the weight of the temporary components and ensure the vertical stability of the anchoring structure.

[0031] A pin hole 205 is pre-set on the first square steel 204 at the top of the column mechanism 2. When the extension component (used to extend the anchoring height and adapt to different temporary component requirements) is inserted into the top of the first square steel 204, the fixing pin is inserted into the aligned pin hole 205. The fixing pin mechanically limits the axial displacement of the extension component, preventing the extension component from coming out of the first square steel 204 under the action of horizontal or vertical force. At the same time, it helps to enhance the overall rigidity of the column mechanism 2 and the extension component, and avoids shaking at the connection between the two.

[0032] A movable cover plate is installed on the anchor hole 103 via a hinge or snap-fit ​​structure. The movable cover plate is connected to the surface of the steel trestle 1 and its size is perfectly matched to the anchor hole 103. During the construction phase, the movable cover plate is opened to expose the anchor hole 103 so that the column mechanism 2 can be inserted. After the construction is completed, the movable cover plate is closed to seal the anchor hole 103, preventing dust, debris or construction wastewater from entering the anchor hole 103 and causing blockage. This avoids foreign objects in the anchor hole 103 affecting the accurate insertion of the column mechanism 2 when used again. At the same time, the movable cover plate in the closed state can ensure that the surface of the steel trestle 1 is flat and does not affect the normal passage function of the steel trestle 1, realizing a seamless switch between "construction hole" and "normal use".

[0033] Overall anchoring operation principle

[0034] Installation phase: Step-by-step fixing, layer-by-layer reinforcement.

[0035] Exposing and initially positioning the anchor hole 103: Open the movable cover to fully expose the anchor hole 103 in the middle of the steel trestle plate 1. Align the column mechanism 2 with the anchor hole 103 and insert it vertically. Use the cross buckle to engage with the steel rib 101 of the steel trestle plate 1 to achieve initial positioning. Ensure that the axis of the column mechanism 2 coincides with the axis of the anchor hole 103 to avoid installation deviation.

[0036] Bottom rigid fixation: By fastening bolts 203 through the end cap steel plate 202 and the cover steel plate 105 of the steel trestle plate 1, and tightening the double nuts, the bottom of the column mechanism 2 and the steel trestle plate 1 are rigidly connected. At this time, the column mechanism 2 transmits the force to the whole structure of the steel trestle plate 1 through the cover steel plate 105, rather than concentrating it in the local area of ​​the foot hole 103, thus achieving "non-destructive load bearing".

[0037] Upper extension reinforcement: According to the height requirements of temporary components (such as safety guardrails, steel frame), the extension component is inserted into the first square steel 204 at the top of the column mechanism 2. The position of the extension component is adjusted so that the pin hole 205 is aligned. The fixing pin is inserted to complete the upper reinforcement, forming a complete anchoring system of "bottom fixing - middle bearing - upper extension" to ensure the stable connection between the temporary component and the steel trestle 1.

[0038] Disassembly phase: Reverse operation, non-destructive recycling

[0039] After construction is completed, the following reverse process is followed: "remove the upper reinforcement - remove the bottom fixation - take out the core component - seal the hole": first, pull out the fixing pin and pull out the extension component; then loosen the double nuts and remove the fastening bolt 203; finally, pull out the column mechanism 2 vertically upward and close the movable cover plate; the entire disassembly process does not require cutting, welding or other destructive operations, all parts can be completely recycled, the device can be reused, and the steel trestle 1 is free from any structural damage and can be used for subsequent projects.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A novel non-destructive anchoring device for steel trestle decks, characterized in that, It includes steel trestle deck (1) and column mechanism (2); The steel trestle (1) includes a panel (102), steel ribs (101), foot holes (103), lifting holes (104), and a facing steel plate (105). The foot holes (103) are opened in the middle of the steel trestle (1). The facing steel plate (105) is fixed on the steel trestle (1) at the bottom of the foot holes (103). The facing steel plate (105) is made of the same material as the steel trestle (1) and fits tightly. The facing steel plate (105) has pre-set bolt holes. The column mechanism (2) includes angle steel (201), end cap steel plate (202), fastening bolts (203), first square steel (204), and second square steel (206). Four angle steels (201) are provided, and the four angle steels (201) are integrally forged with the top and bottom end cap steel plates (202). The lower half of the four angle steels (201) forms a "cross-clamp" structure, the depth of which matches the height of the steel rib (101). The bottom end cap... The steel plate (202) has a reserved bolt hole, and the bolt hole is adapted to the bolt hole position of the cover steel plate (105). The fastening bolt (203) passes through the bolt hole of the end plate (202) and the cover steel plate (105) and is fixed by double nuts. The first square steel (204) is fixed on the top end plate (202). The first square steel (204) has a pre-set pin hole (205), and a fixing pin is adapted in the pin hole (205). The foot hole (103) is provided with a movable cover plate, which is connected to the surface of the steel trestle plate (1) by a hinge or snap-fit ​​structure, and its size is perfectly matched with the foot hole (103).

2. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: The double nuts are a combination of a lock nut and a fastening nut, which are sequentially fitted onto the fastening bolt (203) and tightened.

3. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: The first square steel (204) is equipped with an extension member, which is a second square steel (206). After the extension member is inserted into the first square steel (204), the pin is fixed through the aligned pin hole (205) and the corresponding hole of the extension member.

4. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: The fastening bolt (203) is made of high-strength alloy material.

5. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: After the "cross buckle" structure is inserted into the foot hole (103), it precisely engages with the steel rib (101) inside the steel trestle (1).

6. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: The movable cover plate is flush with the surface of the steel trestle (1) when closed, ensuring that the surface of the steel trestle (1) is flat.

7. The novel non-destructive anchoring device for steel trestle decks according to claim 1, characterized in that: The steel cladding plate (105) and the steel trestle plate (1) are tightly bonded together by welding or bolting to form a locally reinforced structure.

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