Improved workshop protective fence
By using a frameless design and a hook bolt connection system, the problems of complex structure, time-consuming installation, and easy deformation of traditional workshop protective fences are solved, resulting in simplified installation, reduced costs, lightweight design, and high stability.
Patent Information
- Application Number
- CN202520287678.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-22
AI Technical Summary
Traditional workshop protective fences are complex in structure, time-consuming to install, heavy, easily deformed, and lack flexibility, making it difficult to quickly adapt to changes in workshop layout.
The frameless design uses high-strength perforated metal plates or woven mesh. The top of the support frame has a slot, and the edge of the protective mesh is bent to form a hook. The front of the support frame has through holes for hook bolts, and nuts are tightened to form bidirectional force. The bottom of the support frame is fixed with expansion bolts.
It enables rapid installation, reduces costs, lightens weight, improves resistance to deformation, enhances installation stability and flexibility, and adapts to workshop layout adjustments.
Smart Images

Figure CN223781240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial equipment safety protection technology, specifically an improved workshop protective fence, which is particularly suitable for the safety isolation and protection of mechanical equipment in workshops. It features a simplified structure, convenient installation, and strong resistance to deformation. Background Technology
[0002] Traditional workshop safety fences typically consist of framed protective netting and a support frame. Their structure and installation methods present the following problems:
[0003] 1. Complex structure: Multiple main connecting pieces need to be welded to both sides of the bracket, and the protective net needs to be embedded in the metal frame, making the production process cumbersome and costly;
[0004] 2. Low installation efficiency: Each piece of protective netting needs to be fixed to the main and auxiliary connecting pieces on both sides of the bracket with bolts one by one, which is time-consuming and complicated.
[0005] 3. Heavy and easily deformed: Due to the presence of the metal frame, the framed protective net is heavy and is prone to wavy deformation after long-term use;
[0006] 4. Insufficient flexibility: Existing fences are difficult to reuse after dismantling and cannot quickly adapt to the needs of workshop layout adjustments;
[0007] To address the aforementioned issues, there is an urgent need for a new type of protective fence that is structurally simplified, efficiently installed, lightweight, and resistant to deformation. Summary of the Invention
[0008] This utility model aims to provide an improved workshop protective fence. By optimizing the connection structure between the support frame and the protective net, it solves the problems of complex manufacturing, time-consuming installation, and easy deformation of traditional fences, and achieves rapid installation, high stability, and low-cost maintenance.
[0009] To achieve the above objectives, the present invention adopts the following technical solution:
[0010] An improved workshop protective fence includes a support frame, a protective net, hook bolts, and nuts; the top of the support frame has a slot, the upper edge of the protective net is bent to form a hook, and the hook is hooked into the slot; the front of the support frame has several through holes, and the hook bolts pass through the protective net and the through holes and are fixed by nuts.
[0011] Furthermore, this application provides an improved workshop protective fence, wherein the lower edge of the protective net is bent towards the front to form a stepped section, the bending angle of the stepped section is 20-40 degrees, and the length is 10-30 mm, thereby enhancing the protective net's resistance to deformation.
[0012] Furthermore, this application provides an improved workshop protective fence, wherein the bottom of the support frame is welded with a fixing plate, and the fixing plate is fixed to the ground by expansion bolts; multiple support frames are arranged at intervals, and the protective net covers the entire front of the support frames to form a continuous protective surface.
[0013] Furthermore, this application provides an improved workshop protective fence, wherein the hook portion of the hook bolt supports the protective net upwards, and after the nut is tightened, the threaded end of the hook bolt is tightly fitted with the back of the support frame to form a bidirectional force-fixed structure.
[0014] Its core innovations are as follows:
[0015] 1. Frameless protective net design: The protective net is made of high-strength perforated metal plate or woven mesh, eliminating the need for a metal frame and reducing weight by more than 40%.
[0016] 2. Slot and bending structure: A slot is opened at the top of the support frame. The upper edge of the protective net is bent towards the back to form a hook part, and the lower edge is bent towards the front to form a step part. The hook part is directly hooked into the slot to improve installation stability.
[0017] 3. Hook bolt connection system: Several through holes are opened on the front of the support frame along the height direction. Hook bolts pass through the protective net and the through holes in sequence, and are locked to the back of the support frame by nuts to form a two-way force fixation.
[0018] 4. Deformation-resistant design: The stepped and hook sections of the protective netting have a bending structure that enhances overall rigidity and makes it less prone to deformation over long-term use.
[0019] This invention has the following advantages over the prior art:
[0020] 1. Improved installation efficiency: The protective netting is pre-fixed via slots, requiring only half the number of hook bolts to complete the installation, reducing installation time by 60%.
[0021] 2. Reduced manufacturing costs: Eliminating the frame and connecting pieces reduces material costs by 35% and simplifies the production process.
[0022] 3. Lightweight and deformation resistant: The frameless design reduces weight, the bending structure improves bending strength, and the flatness retention rate of the protective netting is increased by 50%.
[0023] 4. Flexibility and reusability: The support frame and protective net can be quickly disassembled and assembled to adapt to the needs of workshop layout adjustments. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of an improved workshop protective fence according to this utility model, showing the assembly relationship of the support frame, protective net, card slot, hook part and step part.
[0025] Figure 2 This is a schematic diagram of an improved workshop protective fence assembly structure according to the present invention, which details the fastening method of hook bolts passing through the through holes of the protective net and the support frame.
[0026] Figure 3 for Figure 2 A magnified view of section A shows the details of the hook and slot connection.
[0027] The components include: 1. support frame; 2. protective net; 3. hook bolt; 4. nut; 5. fixing plate; 6. through hole; 7. slot; 8. hook part; 9. step part. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] like Figures 1-3As shown, this embodiment provides an improved workshop protective fence, which includes a support frame 1, a protective net 2, hook bolts 3, and nuts 4. The support frame 1 has a slot 7 at its top, and the upper edge of the protective net 2 is bent to form a hook portion 8, which is hooked into the slot 7. The support frame 1 has several through holes 6 on its front side, and the hook bolts 3 pass through the protective net 2 and the through holes 6 before being fixed by the nuts 4. The lower edge of the protective net 2 is bent towards the front to form a stepped portion 9, with a bending angle of 20-40 degrees and a length of 10-30 mm, enhancing the protective net's resistance to deformation. A fixing plate 5 is welded to the bottom of the support frame 1, and the fixing plate 5 is fixed to the ground by expansion bolts. Multiple support frames 1 are arranged at intervals, and the protective net 2 covers the entire front of the support frame 1 to form a continuous protective surface. The hook portion of the hook bolt 3 supports the protective net 2 upwards, and after the nuts 4 are tightened, the threaded end of the hook bolt 3 is tightly fitted to the back of the support frame 1, forming a bidirectional force-bearing fixation.
[0032] 1. Support frame manufacturing and fixing
[0033] The support frame 1 is made of rectangular steel tubing and has a height of 1.5-2.0 meters. A fixing plate 5 is welded to the bottom of the support frame 1, with pre-drilled mounting holes. The support frame 1 is vertically fixed to the ground using expansion bolts. A slot 7 is machined at the top of the support frame 1, with a depth of 10-15 mm and a width slightly greater than the thickness of the hook portion 8, ensuring that the protective netting 2 can be quickly hung. Through holes 6 are evenly spaced along the height direction on the front of the support frame 1, with the hole diameter matching the diameter of the hook bolts 3, and a hole spacing of 30-40 cm.
[0034] 2. Protective netting processing and installation
[0035] 1) Bending treatment of protective netting: bend the upper edge of the protective netting 2 to the back at 90 degrees to form a hook part 8, and bend the lower edge to the front at 30 degrees to form a step part 9. The bending lengths are 50 mm and 20 mm respectively.
[0036] 2) Pre-attach the protective net: Align the hook part 8 of the protective net 2 with the slot 7 of the support frame 1, and press down gently to make the hook part 8 fully embedded in the slot 7.
[0037] 3) Bolt tightening: Insert the hook bolt 3 from the front of the support frame 1, so that the hook end passes through the mesh of the protective net 2 and is inserted into the through hole 6. Then screw the nut 4 in from the back and tighten it with a wrench until the nut 4 is flush with the back of the support frame 1. The hook part of the hook bolt 3 supports the protective net 2 upward, forming a double fixation.
[0038] 3. Fence expansion and adjustment
[0039] To expand the protection area, simply increase the number of support frames 1 and install the protective netting 2 according to the steps described above. To adjust the position of the fence, remove the nuts 4 and pull out the hook bolts 3, remove the protective netting 2 from the slots 7, re-fix the support frames 1, and then reattach it.
[0040] 4. Example
[0041] Take the protection of a CNC machine tool in the workshop as an example:
[0042] 1) Fix one support frame 1 every 1.2 meters around the perimeter of the machine tool, for a total of 8 frames;
[0043] 2) Select a 1.8-meter-high perforated metal plate as the protective net 2, and after bending and processing, cover the entire front of the support frame 1;
[0044] 3) Use hook bolts 3 to fix the protective net 2 at 35 cm intervals on each support frame 1. A total of 64 bolts are required, which takes about 1.5 hours, saving 60% of the time compared with the traditional method.
[0045] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.
[0046] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. An improved workshop protective fence, characterized in that, It includes a support frame (1), a protective net (2), hook bolts (3) and nuts (4); the top of the support frame (1) has a slot (7), the upper edge of the protective net (2) is bent to form a hook part (8), and the hook part (8) is hooked into the slot (7); the front of the support frame (1) has several through holes (6), and the hook bolts (3) pass through the protective net (2) and the through holes (6) and are fixed by nuts (4).
2. The improved workshop protective fence according to claim 1, characterized in that, The lower edge of the protective net (2) is bent toward the front to form a stepped part (9). The bending angle of the stepped part (9) is 20-40 degrees and the length is 10-30 mm, which enhances the deformation resistance of the protective net.
3. The improved workshop protective fence according to claim 1, characterized in that, The support frame (1) has a fixing plate (5) welded to its bottom, and the fixing plate (5) is fixed to the ground by expansion bolts; multiple support frames (1) are arranged at intervals, and the protective net (2) covers the front of all support frames (1) to form a continuous protective surface.
4. The improved workshop protective fence according to claim 1, characterized in that, The hook part of the hook bolt (3) supports the protective net (2) upward. After the nut (4) is tightened, the threaded end of the hook bolt (3) fits tightly against the back of the support frame (1) to form a bidirectional force fixation.