Protective device for welding preheater steel truss

Abstract

The utility model discloses a protective device for welding a steel truss of a preheater, which comprises a protective cage and a steel truss, the crawling ladder is arranged on one side of the protective fence, and a transverse crawling ladder is arranged at the top end of the crawling ladder in the horizontal direction; the pawl is connected with the end, away from the protection cage, of the transverse ladder stand, the connecting end of the pawl and the transverse ladder stand is detachably connected, and a clamping cavity is formed in the end, away from the transverse ladder stand, of the pawl. The protection cage is arranged, a welding worker can conveniently stand in the protection cage to weld the steel truss, the protection cage is welded to the vertical ladder stand, the welding worker can conveniently weld the steel truss at the high position, the pawl and the protection cage are connected through the transverse ladder stand, and therefore the protection cage can be stably fixed to the steel truss. In addition, the transverse crawling ladders with different lengths can be replaced or the transverse crawling ladders and the pawls can be connected by selecting the connecting holes in different positions, so that the transverse crawling ladders can be fixed on the steel trusses with different widths, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work, in particular to a protective device for a welding preheater steel truss. Background Art

[0002] As market demand grows, the original cement production line cannot meet the growing production demand, and the production capacity of the production line needs to be increased through preheater modification. When the capacity or size of the preheater is expanded, welded steel trusses are required to play a supporting role. However, traditionally, welded steel trusses rely on building scaffolding to provide a working platform, but this method has many shortcomings.

[0003] Building scaffolding is time-consuming and labor-intensive, which prolongs the progress of the entire renovation project; high material and labor costs further increase the budget of the renovation project; the scaffolding construction and disassembly process itself has a high safety risk, prone to collapse accidents, posing a threat to the life safety of workers. In addition, when building scaffolding for welding, because the steel trusses are generally located at a high position and are prone to shaking, welders need to perform long-term high-altitude operations in an unstable environment, which undoubtedly increases the difficulty and fatigue of the operation, thereby affecting the welding quality. In summary, traditional welding methods are incapable of dealing with the problem of cement preheater steel truss docking, so there is an urgent need to develop new technologies or equipment to improve this situation in order to achieve safer and more efficient welding operations. Utility Model Content

[0004] The utility model provides a protective device for welding the steel truss of a cement preheater to solve the problem of potential safety hazards when the traditional welding method is used to connect the steel trusses of the cement preheater. The specific technical solution is as follows:

[0005] A protective device for a welding preheater steel truss comprises: a protective cage, which comprises a protective railing; a ladder arranged on one side of the protective railing, a transverse ladder being arranged in the horizontal direction at the top of the ladder; a pawl connected to an end of the transverse ladder away from the protective cage, the connecting end of the pawl and the transverse ladder being arranged to be detachably connected, and a clamping cavity being formed at the end of the pawl away from the transverse ladder.

[0006] Preferably, the guardrail is welded from metal pipes into a grid-shaped guardrail, there is no guardrail on the top of the guardrail, and a protective floor is provided at the bottom of the guardrail.

[0007] Preferably, the ladder also includes a vertical ladder placed closely fitting against the vertical side of the guardrail, and the vertical ladder is detachably connected to the connecting end of the horizontal ladder.

[0008] Preferably, at least two connection holes with the same diameter are formed at the connection between the pawl and the transverse ladder.

[0009] Preferably, the pawl further comprises: a connecting section, which is connected to the transverse ladder; and a limiting section, wherein the limiting section and the connecting section are arranged on both sides of the clamping cavity.

[0010] Preferably, the cross section of the clamping cavity is a U-shaped cavity with the opening side facing the protection cage, and the maximum width of the clamping cavity is at most 5 mm greater than the diameter of the steel pipe fixed to the steel truss.

[0011] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0012] The utility model provides a protective cage to provide a safe and stable working place for welding workers, which is convenient for welding workers to stand in the protective cage to weld the steel trusses. The protective cage is welded to the vertical ladder, which is convenient for welding workers to weld the steel trusses at high places. The horizontal ladder connects the pawl and the protective cage, so that the protective cage can be stably fixed on the steel trusses. In addition, the detachable connection method can replace horizontal ladders of different lengths or select connection holes in different positions to connect the horizontal ladder and the pawl, so that it can be fixed on steel trusses of different widths, thereby improving the applicability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view of an embodiment of the utility model;

[0014] Figure 2 It is the front view of the embodiment of the utility model.

[0015] In the figure: 1. Protective cage, 2. Ladder, 3. Ratchet;

[0016] 11. Guardrail, 12. Protective floor, 21. Vertical ladder, 22. Horizontal ladder, 31. Connecting section, 32. Clamping cavity, 33. Limiting section, 34. Connecting hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] As shown in Figure 1 to Figure 2 As shown, the embodiment of the utility model includes a protection cage 1, which includes a protection floor 12 at the bottom. The protection floor 12 is made of metal plate. A protection rail 11 is welded to the top surface of the protection floor 12. The protection rail 11 is a grid-shaped guardrail formed by welding vertically placed stainless steel pipes and horizontally placed stainless steel pipes. In addition, the protection rail 11 has no guardrail, which is convenient for welding workers to stand in the protection cage 1 to weld the steel truss, and can well protect the welding workers standing therein.

[0020] A ladder 2 is welded to the right side of the guardrail 11. The ladder 2 is similar to the existing ladder, but differs in that it includes a vertical ladder 21 and a horizontal ladder 22. The top of the vertical ladder 21 is connected to the left end of the horizontal ladder 22 by screws. The screws used here need to be selected according to the overall weight of the embodiment of the utility model to avoid exceeding the shear strength of the screws and causing accidents due to screw breakage. This connection method can not only replace the horizontal ladder 22 of different lengths according to the width of the steel truss, but also quickly disassemble the ladder 2 for easy storage and organization.

[0021] The right end of the horizontal ladder 22 is connected with a pawl 3, and the pawl 3 includes a connecting section 31 whose left end is screwed to the horizontal ladder 22. The connecting section 31 is formed with a connecting hole 34 at the part overlapping with the horizontal ladder 22, and a hole for placing screws is also formed at the right end of the horizontal ladder 22. To ensure the connection strength, the diameter of the connecting hole 34 is not less than 10mm, and six holes are provided in this embodiment, so that the ladder 2 can adapt to the steel truss with a width varying within a certain range without replacing the horizontal ladder 22. At the same time, more than two screws can be placed between the connecting section 31 and the horizontal ladder 22 to further improve the connection strength between the two.

[0022] In addition, the pawl 3 includes a limiting section 33 which is integrated with the right end of the connecting section 31. The cross-section of the limiting section 33 is U-shaped with the open side facing the protective cage 1. The space enclosed by the limiting section 33 is a clamping cavity 32. The maximum width of the clamping cavity 32 is at most 5 mm larger than the diameter of the steel pipe in contact with the steel truss, so that it can be easily moved and avoid the risk of falling off. The clamping cavity 32 is used to place the steel truss to support the entire protective device. At the same time, the bent part of the limiting section 33 can prevent the protective device from rotating and sliding, thereby improving the safety of the entire protective device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0024] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A protective device for a welding preheater steel truss, characterized in that: include A protective cage (1), the protective cage (1) comprising a protective fence (11); A ladder (2) arranged on one side of the guardrail (11), with a transverse ladder (22) being arranged in a horizontal direction at the top end of the ladder (2); A pawl (3) connected to an end of the transverse ladder (22) away from the protective cage (1), wherein the connection end of the pawl (3) and the transverse ladder (22) is arranged to be detachably connected, and a clamping cavity (32) is formed at the end of the pawl (3) away from the transverse ladder (22).

2. The protective device according to claim 1, characterized in that: The guardrail (11) is welded from metal pipes into a grid-shaped guardrail, the top of the guardrail (11) has no guardrail, and the bottom of the guardrail (11) is provided with a protective floor (12).

3. The protective device according to claim 1, characterized in that: The ladder (2) further comprises a vertical ladder (21) placed in close contact with the vertical side surface of the guardrail (11), and the connecting end of the vertical ladder (21) and the horizontal ladder (22) is configured to be detachably connected.

4. The protective device according to claim 1, characterized in that: At least two connection holes (34) with the same diameter are formed at the connection point between the ratchet (3) and the transverse ladder (22), and the diameter of the connection hole (34) is not less than 10 mm.

5. The protective device according to claim 1, characterized in that: The ratchet (3) further comprises: A connecting section (31), the connecting section (31) being connected to the transverse ladder (22); and A limiting section (33), wherein the limiting section (33) and the connecting section (31) are arranged on both sides of the clamping cavity (32).

6. The protective device according to claim 1, characterized in that: The cross section of the clamping cavity (32) is a U-shaped cavity with the opening side facing the protective cage (1), and the maximum width of the clamping cavity (32) is at most 5 mm greater than the diameter of the steel pipe fixed to the steel truss.

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