Fine adjustment device for mounting prefabricated central guardrail
By designing hoisting and fine-tuning components, the problem of inaccurate positional adjustments during the installation of precast concrete central guardrails was solved, achieving high-precision alignment and stable installation of the guardrails, thus improving construction efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU ZHUCHENG HENGCHUANG CONSTR ENG CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing technology, the position of the precast cement central guardrail is not precisely adjusted during the installation process, resulting in inconsistent alignment between adjacent guardrails. The existing method leads to a large displacement tolerance.
The system employs a lifting assembly and a fine-tuning assembly. The lifting assembly uses lifting holes and slings to assist in lifting, while the fine-tuning assembly includes lateral and longitudinal fine-tuning, utilizing structures such as guide rods, suspensions, columns, and pulleys to achieve precise position adjustment.
This improved the installation accuracy and efficiency of prefabricated central guardrails, reduced errors from manual adjustments, and ensured that the straightness, levelness, and verticality of the guardrail installation met the project requirements.
Smart Images

Figure CN224259241U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated guardrail technology, and in particular to a fine-tuning device for installing prefabricated central guardrails. Background Technology
[0002] The fine-tuning device for installing precast concrete median guardrails is an auxiliary tool specifically designed for road construction. It is primarily used for precise position adjustment and height calibration during the installation of precast concrete median guardrails, ensuring that the straightness, levelness, and verticality of the guardrail installation meet engineering requirements. This device is typically made of high-strength steel or aluminum alloy, featuring a compact structure and simple operation. Through components such as fine-tuning screws, a level, and fixing clamps, it achieves precise positioning of the guardrail, effectively improving construction efficiency and quality, reducing errors from manual adjustments, and is suitable for various guardrail installation scenarios, including highways and urban roads.
[0003] Chinese patent CN216864885U discloses a mechanical noise reduction device for municipal roads and bridges. This patent includes a cement base with multiple posts for installing guardrails fixedly connected to its upper end. Multiple vertical plates are provided on one side of the cement base, with multiple sound-insulating panels inserted into each plate. Support plates are fixedly connected to the side walls of the two vertical plates on either side of each sound-insulating panel. An installation plate that contacts the cement base is fixedly connected to one end of each support plate. The installation plate is connected to the cement base by two expansion bolts. Straight rods are fixedly connected to the side walls of the two vertical plates in the middle of the sound-insulating panel, with limit clamps fixedly connected to one end of each rod. This invention uses expansion bolts to fix the installation plates to the upper end of the cement base, and then rotates two second nuts to move them along the side walls of the threaded rods, fixing the limit clamps to the side walls of the posts. This facilitates the fixed installation of the sound-insulating panels onto the cement base of the guardrail, thereby improving the installation efficiency and resource utilization.
[0004] In existing technologies, the placement of precast concrete central guardrails on roads requires alignment and fine-tuning. The current method mainly involves workers moving the stone blocks with crowbars. This method has a large displacement tolerance, resulting in uneven alignment between adjacent guardrails. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a fine-tuning device for installing prefabricated central guardrails.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A fine-tuning device for installing a prefabricated central guardrail, comprising a prefabricated central guardrail, and further comprising:
[0008] The hoisting assembly includes a hoisting hole on one side of the central guardrail, through which a sling is installed. A hook is provided on one side of the sling, and a guide groove is provided on one side of the hook.
[0009] Further technical solutions also include:
[0010] The fine-tuning assembly includes a lateral fine-tuning assembly and a longitudinal fine-tuning assembly. The lateral fine-tuning assembly includes a guide rod that is mated and installed inside the guide groove, and a suspension is fixed to one side of the guide rod.
[0011] A further technical solution includes longitudinal fine-tuning components consisting of uprights fixedly installed on both sides of the suspension, with pulleys installed at the bottom of the uprights.
[0012] A further technical solution involves fixing stiffeners between the suspension and the pillar.
[0013] A further technical solution involves fixing tripods to both sides of the column.
[0014] Compared with the prior art, this utility model provides a fine-tuning device for installing prefabricated central guardrails, which has the following beneficial effects:
[0015] This invention utilizes a lifting assembly with pre-drilled holes at the top of the prefabricated central guardrail for securing slings. The slings allow for suspension. The fine-tuning assembly provides both lateral and longitudinal adjustments. Lateral adjustments are achieved by sliding the hooks on the guide rod surface, while longitudinal adjustments are made by moving the pulleys. This device offers a high load capacity and significantly improved displacement accuracy. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a fine-tuning device for installing a prefabricated central guardrail according to the present invention;
[0017] Figure 2 This is a schematic diagram of the longitudinal section of a fine-tuning device for installing a prefabricated central guardrail, as proposed in this utility model.
[0018] Figure 3 This is an exploded view of the structure of a fine-tuning device for installing a prefabricated central guardrail proposed in this utility model;
[0019] Figure 4 This is a side view of a micro-adjustment device for installing a prefabricated central guardrail, as proposed in this utility model.
[0020] In the diagram: 1. Prefabricated central guardrail; 2. Lifting assembly; 3. Fine-tuning assembly; 4. Lifting hole; 5. Lifting strap; 6. Hook; 7. Guide groove; 8. Guide rod; 9. Suspension; 10. Column; 11. Rib plate; 12. Tripod; 13. Pulley. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of the present utility model.
[0022] Example 1: Refer to Figure 1 - Figure 4 A fine-tuning device for installing a prefabricated central guardrail, comprising a prefabricated central guardrail 1, and further comprising:
[0023] The hoisting assembly 2 includes a hoisting hole 4 on one side of the central guardrail 1. The hole 4 is a structure through which the hoisting strap 5 passes and is installed. The hoisting strap 5 passes through and is installed inside the hoisting hole 4. A hook 6 is provided on one side of the hoisting strap 5. The hook 6 is slidably installed on the surface of the guide rod 8 and fixed to the surface of the hoisting strap 5, respectively, to achieve the effect of fine adjustment of the lateral position. A guide groove 7 is provided on one side of the hook 6.
[0024] The aforementioned fine-tuning device for installing a prefabricated central guardrail further includes:
[0025] The fine-tuning component 3 includes a lateral fine-tuning component and a longitudinal fine-tuning component. The lateral fine-tuning component includes a guide rod 8 that is mated and installed inside the guide groove 7. The guide rod 8 is a component that is slidably installed on the hook 6. The suspension 9 is the main load-bearing structure. The suspension 9 is fixed to one side of the guide rod 8.
[0026] The aforementioned fine-tuning device for installing a prefabricated central guardrail includes a longitudinal fine-tuning component comprising columns 10 fixedly installed on both sides of a suspension 9, with pulleys 13 installed at the bottom of the columns 10, which can achieve longitudinal movement.
[0027] The aforementioned fine-tuning device for installing a prefabricated central guardrail has a stiffening plate 11 fixedly installed between the suspension 9 and the column 10. The function of the stiffening plate 11 is to increase the strength of the installation.
[0028] The aforementioned fine-tuning device for installing a prefabricated central guardrail has a tripod 12 fixedly installed on both sides of the column 10, which increases the stability of the docking part.
[0029] Working principle:
[0030] In the actual design process, this utility model addresses the following defects in the prior art: "In the prior art, the precast cement central guardrails on the road need to be aligned and fine-tuned during the installation process. The existing technology mainly involves workers moving the stone blocks with crowbars, which has a large displacement tolerance, resulting in uneven alignment between adjacent guardrails." Therefore, the lifting component 2 and the fine-tuning component 3 are specifically proposed.
[0031] Lifting component 2:
[0032] The component is assisted in hoisting by setting lifting holes 4 on both sides of the prefabricated central guardrail 1 and passing lifting straps 5 through them.
[0033] Fine-tuning component 3:
[0034] This component offers both lateral and longitudinal fine-tuning capabilities. Lateral adjustment is achieved by sliding the hook 6 across the surface of the guide rod 7. The top suspension 9 is the primary load-bearing component. The stiffening plate 11 and tripod 12 enhance the stability of the support. The pulley 13 at the bottom of the column 10 enables longitudinal movement.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A fine-tuning device for installing a prefabricated central guardrail, comprising a prefabricated central guardrail (1), characterized in that, Also includes: The hoisting assembly (2) includes a hoisting hole (4) on one side of the central guardrail (1), a sling (5) is installed through the hoisting hole (4), a hook (6) is provided on one side of the sling (5), and a guide groove (7) is provided on one side of the hook (6).
2. The fine-tuning device for installing a prefabricated central guardrail according to claim 1, characterized in that, Also includes: The fine-tuning component (3) includes a lateral fine-tuning component and a longitudinal fine-tuning component. The lateral fine-tuning component includes a guide rod (8) that is installed inside the guide groove (7). A suspension (9) is fixed on one side of the guide rod (8).
3. The fine-tuning device for installing a prefabricated central guardrail according to claim 2, characterized in that, The longitudinal fine-tuning assembly includes columns (10) fixedly installed on both sides of the suspension (9), and pulleys (13) are installed at the bottom of the columns (10).
4. The fine-tuning device for installing a prefabricated central guardrail according to claim 3, characterized in that, A stiffening plate (11) is fixedly installed between the suspension (9) and the column (10).
5. A fine-tuning device for installing a prefabricated central guardrail according to claim 3, characterized in that, Tripods (12) are fixedly installed on both sides of the column (10).