A safety pillar tool for high temperature valve operation of exhaust manifold of low speed diesel engine

Abstract

A safety column fixture for operating high-temperature valves on low-speed diesel engine exhaust manifolds utilizes the existing special bolts on the exhaust manifold flange as fixing points, eliminating the need for additional welding or modification, thus enabling rapid installation and disassembly of the safety column. The base is fitted onto the special bolts through through holes, and a safety rope buckle can be threaded through the perforated plate at the top of the safety column, ensuring the safety rope meets the "high-hanging, low-use" requirement. This device has a simple structure and is easy to install, significantly improving the safety of high-altitude operations. It is suitable for scenarios requiring temporary safety belt fixation, such as diesel engine assembly and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection technology for high-altitude operations, specifically relating to a safety column fixture for operating the high-temperature valve of the exhaust manifold of a low-speed diesel engine. Utilizing the existing flange bolts of the diesel engine as fixing points, it eliminates the need for welding or equipment modification, enabling rapid installation and disassembly of the safety column. Background Technology

[0002] During the operation of the high-temperature valve in the exhaust manifold of a low-speed diesel engine, workers often need to operate from a high position above the ground, such as performing electrical debugging, maintenance of the operating mechanism, and insulation wrapping. However, the existing working environment has the following prominent problems:

[0003] Safety risks: The high-temperature valve is located at the top of the exhaust manifold, and the working environment is at a high height above the ground. The original flange bolts did not have safety belt suspension points, which forced workers to adopt the "low-hanging, high-use" method, which does not meet the safety belt use standards and poses a risk of falling.

[0004] Structural limitations: Existing safety columns are mostly of general-purpose design, which cannot be adapted to the narrow space of diesel engines, and installation requires destructive modifications, affecting the original structural integrity of the equipment.

[0005] With the upgrading of the "Production Safety Law" regarding the protection requirements for high-altitude operations, there is an urgent need for a dedicated and standardized safety support fixture to meet the specific needs of the diesel engine industry. Therefore, a special safety support fixture for climbing to designated locations is designed. It is primarily suitable for more safely and conveniently attaching safety ropes at the high-temperature valve connected to the exhaust manifold. After the entire machine is installed, it ensures worker safety and eliminates potential safety hazards during electrical and operational work on the high-temperature valve, as well as insulation work.

[0006] In summary, the current operating environment issues of the high-temperature valve on the diesel engine exhaust manifold are as follows:

[0007] ① Safety hazards caused by the low throw of seat belts.

[0008] ② The lack of suitable safety facilities for working at heights leads to poor work efficiency. Utility Model Content

[0009] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing safety environment and to provide a safety column fixture for the operation of high temperature valves in the exhaust manifold of low-speed diesel engines. No additional welding or modification is required. The fixture is simple to install and has good effect.

[0010] The technical solution of this utility model:

[0011] A safety column fixture for operating a high-temperature valve in the exhaust manifold of a low-speed diesel engine, characterized in that it includes:

[0012] The base assembly has two through holes that match the special bolts for the exhaust manifold flange, and is fixed to the flange bolts with nuts to form a detachable connection;

[0013] The lower end of the round tube assembly is vertically welded and fixed to the center of the upper surface of the base assembly, and the upper end has a square insertion hole.

[0014] The orifice plate assembly has a plug-in part at the lower part that matches the square plug-in hole at the upper end of the round tube assembly, and is fixed to the top of the round tube assembly by welding. The upper part has a safety belt connection hole.

[0015] Two triangular reinforcing plates are symmetrically welded between the upper surface of the base assembly and the outer wall of the round tube assembly (2) to form a stable triangular support structure.

[0016] Furthermore, the center distance of the through holes in the base assembly matches the arrangement spacing of the special bolts for the exhaust manifold flange, ensuring that the tooling can be directly fixed using the existing bolts.

[0017] Furthermore, the height of the circular tube assembly is set to meet the working height requirement of "high attachment and low use" for the safety belt, and its length is 1.2-1.5 meters.

[0018] Furthermore, the right-angled sides of the triangular reinforcing plate are fully bonded and welded to the upper surface of the base assembly and the outer wall of the round tube assembly, respectively, and the hypotenuse is set at a 45° angle.

[0019] Furthermore, the thickness of the base assembly is 10-12mm, and the wall thickness of the round tube assembly is 3-5mm.

[0020] Furthermore, the welding of the circular tube assembly and the base assembly adopts a full welding process, and the weld height is not less than 4mm.

[0021] Furthermore, the insertion part of the orifice plate assembly and the square insertion hole of the round tube assembly adopt an interference fit with a fit tolerance of H7 / s6.

[0022] Technical effects of this utility model:

[0023] 1. Significantly improved safety: It solves safety issues when working in special positions. When working on high-temperature valves, it enables the standardized use of safety belts to ensure operational safety.

[0024] 2. Improved installation efficiency: It uses existing special bolts for fixing, without the need to modify or process diesel engine parts. The independent modular design allows for quick assembly and disassembly as needed for operation.

[0025] 3. Enhanced structural reliability: The triangular plate, base, and round tube form a triangular support frame, improving bending strength. 4. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the installation of the safety column on the diesel engine exhaust manifold, with the safety rope (dashed line) suspended from the orifice plate.

[0028] Figure 2 General structural drawing of safety columns.

[0029] 1-Base assembly, 2-Round tube assembly, 3-Perforated plate assembly, 4-Triangular reinforcement Detailed Implementation

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. The safety column fixture of this invention is mainly used for high-altitude operation safety protection of the high-temperature valve at the exhaust manifold of a low-speed diesel engine. Through modular design, it enables quick installation and disassembly, ensuring that the safety belt meets the "high mounting, low use" specification requirements.

[0031] This safety column fixture mainly consists of the following components (see...) Figure 2 ):

[0032] Base assembly 1: Made of 10mm thick Q345B steel plate, measuring 200mm × 150mm, with two symmetrical Φ18mm through holes. The hole spacing is strictly matched with the arrangement spacing of the special bolts for the exhaust manifold flange (usually 160mm). The lower surface of the base is treated with anti-slip material to ensure installation stability.

[0033] Round tube assembly 2: Φ60mm×4mm Q345B seamless steel pipe is selected, with a length of 1.3 meters designed according to the working height requirements. The lower end of the round tube is welded perpendicularly to the center of the base (full weld, weld height ≥4mm), and a 30mm×30mm square insertion hole is opened at the upper end.

[0034] Orifice plate assembly 3: Made of 10mm thick steel plate, with a plug-in boss (tolerance fit H7 / s6) machined at the bottom to match the square hole of the round tube, and a Φ25mm safety belt connection hole opened at the top, with rounded corners (R3) at the edge of the hole to avoid abrasion of the safety rope.

[0035] Triangular reinforcing plate 4: Two right-angled triangular plates made of 8mm thick Q345B steel plates, with the right-angled sides fully welded to the upper surface of the base and the outer wall of the round tube respectively (continuous weld, height ≥4mm), and the hypotenuses arranged at 45° to form a stable triangular support structure.

[0036] The specific installation steps are as follows (see...) Figure 1 ):

[0037] Preparation phase: Confirm that the diesel engine is shut down and the exhaust manifold temperature has dropped to a safe range (<50℃).

[0038] Base installation: Align the two through holes of the base with the special bolts on the exhaust manifold flange;

[0039] Tighten using the original flange nuts (or matching anti-loosening nuts), with the torque controlled at 80-100 N·m, to ensure the base is stable and does not wobble.

[0040] Safety inspection: Confirm that there are no cracks in any welded parts and that the overall structure is not deformed; shake the round tube vigorously to test its stability (maximum swing amplitude should be <5°).

[0041] Safety belt suspension: Hook the safety rope buckle directly into the connection hole of the orifice plate, and adjust the rope length so that the worker is in a "high hanging, low use" state.

[0042] Through practical application testing, this tooling has the following advantages:

[0043] Safety: The triangular support structure allows the tooling to withstand lateral tensile forces of ≥15kN, far exceeding the standard load of a safety belt (8kN);

[0044] Convenience: A single person can complete the installation or disassembly within 5 minutes without any auxiliary tools;

[0045] Compatibility: Adapts to all exhaust manifold flange bolt arrangements of S60 series diesel engines, requiring no equipment modification.

[0046] The above is a preferred embodiment of the present invention and should not be construed as limiting the scope of protection of the present invention. The scope of protection of the present invention also includes other variations and substitutions that are obvious to those skilled in the art.

Claims

1. A safety post tooling for high temperature valve service of low speed diesel engine exhaust manifold characterized by, include: The base assembly (1) has two through holes that match the special bolts for the exhaust manifold flange, and is fixed to the flange bolts by nuts to form a detachable connection; The lower end of the round tube assembly (2) is vertically welded and fixed to the center of the upper surface of the base assembly (1), and a square insertion hole is opened at the upper end. The orifice plate assembly (3) has an insertion part at its lower part that matches the square insertion hole at the upper end of the round tube assembly (2), and is fixed to the top of the round tube assembly by welding. The upper part has a safety belt connection hole. Two triangular reinforcing plates (4) are symmetrically welded between the upper surface of the base assembly (1) and the outer wall of the round tube assembly (2) to form a stable triangular support structure.

2. The safety post tooling for high temperature valve operation of exhaust manifold of low speed diesel engine as claimed in claim 1 wherein, The center distance of the through holes of the base assembly (1) matches the arrangement spacing of the special bolts for the exhaust manifold flange, ensuring that the tooling can be directly fixed using the original bolts.

3. The safety post tooling for high temperature valve service of low speed diesel engine exhaust manifold according to claim 1, characterized in that, The height of the circular tube assembly (2) is set to meet the working height requirement of "high hanging and low use" of the safety belt, and its length is 1.2-1.5 meters.

4. The safety post tooling for high temperature valve service of low speed diesel engine exhaust manifold according to claim 1, characterized in that, The right-angled sides of the triangular reinforcing plate (4) are fully welded to the upper surface of the base assembly (1) and the outer wall of the round tube assembly (2), respectively, and the hypotenuse is set at a 45° angle.

5. The safety post tooling for high temperature valve service of low speed diesel engine exhaust manifold according to claim 1, characterized in that, The thickness of the base assembly (1) is 10-12 mm, and the wall thickness of the round tube assembly (2) is 3-5 mm.

6. The safety column fixture for operating the high-temperature valve of the exhaust manifold of a low-speed diesel engine according to claim 1, characterized in that, The welding of the round tube assembly (2) and the base assembly (1) adopts a full welding process, and the weld height is not less than 4mm.

7. The safety post tooling for high temperature valve service of low speed diesel engine exhaust manifold according to claim 1, characterized in that, The insertion part of the orifice plate assembly (3) and the square insertion hole of the round tube assembly (2) are interference fit, and the fit tolerance is H7 / s6.

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