Heavy lifting hook for door leaf of civil air defense door

Abstract

The utility model discloses a heavy lifting hook for a door leaf of a civil air defense door, and belongs to the field of civil air defense doors. Comprising an upper channel steel arranged on the civil air defense door; the lifting ring assembly is fixedly arranged on the upper channel steel and used for lifting the civil air defense door; the lifting ring assembly comprises two lifting ring plates which are arranged to be of an L-shaped plate-shaped structure, the short parts of the two lifting ring plates are attached and fixed to the upper end face of the upper steel channel, and the long parts of the two lifting ring plates are attached to each other. And the lifting ring hole is formed in the center of the longer part of the lifting ring plate. The heavy lifting hook for the door leaf of the civil defense door has the beneficial effect that the heavy lifting hook for the door leaf of the civil defense door has double protection.

Description

Technical Field

[0001] The present application relates to the field of civil air defense doors, and in particular, to a heavy-duty hook for a door leaf of a civil air defense door. Background Art

[0002] The air-raid doors in the air-raid shelters need to be able to resist the residual pressure of shock waves, so they are mostly made of large-size steel and thick steel plates during design and production. This results in a very heavy weight of the door leaf, and the pulling force in all directions that the door leaf needs to withstand during installation is greater than the weight of the door leaf, which requires a safe and reliable hook to be designed at the door leaf's hanging point. Ordinary door leaf hooks are generally purchased from round steel that is cold-bent and then welded to the door leaf. The hooks made of round steel are prone to deformation during the process of hoisting and installation, and are prone to metal fatigue and breakage after multiple stress deformations, posing a great safety hazard.

[0003] The structure of the product can refer to the Chinese patent document publication number: CN218376242U, which discloses a civil defense door with a hidden lifting ring, which includes a door leaf and a lifting ring. The lifting ring is located at the top of the door leaf, and the door leaf is provided with a receiving groove corresponding to the position of the lifting ring. The position of the door leaf located at the receiving groove is provided with a limiting component for limiting the lifting ring in the receiving groove.

[0004] In the above structure, the replacement is only connected by bolts, which easily leads to metal fatigue and great safety hazards.

[0005] Therefore, a heavy-duty hook for a door leaf of a civil air defense door with double protection is needed. Utility Model Content

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a heavy-duty hook for a civil air defense door leaf, including: an upper channel steel, which is arranged on the civil air defense door; a lifting ring assembly, which is welded and fixed on the upper channel steel and is used to lift the civil air defense door; the lifting ring assembly includes: two lifting ring plates, which are arranged as an L-shaped plate structure, wherein the shorter parts of the two lifting ring plates are fit and fixed on the upper end surface of the upper channel steel, and the longer parts of the two lifting ring plates are fit to each other; a lifting ring hole, which is opened at the center position of the longer part of the lifting ring plate; reinforcing plates are fixedly connected to the upper and lower sides of the upper channel steel, and concentrically arranged threaded holes are opened on the reinforcing plate and the upper channel steel, and a through hole concentrically arranged with the threaded hole is opened on the shorter part of the lifting ring plate, and a bolt passes through the through hole and is threadedly connected to the threaded hole; the bolt passes through the through hole and is threadedly connected to the threaded hole.

[0008] Furthermore, reinforcing ribs are arranged between the longer part and the shorter part of the eye plate, and the reinforcing ribs are arranged on both sides of the eye hole.

[0009] Furthermore, a support assembly is arranged on the extremely strong plate, and the support assembly comprises: a support groove, which is arranged on the reinforcing plate; and a limit hook plate, which is arranged on the reinforcing plate.

[0010] Furthermore, the limiting hook plate includes: a hinged portion hinged in the support groove and a hook body portion and a support portion fixedly connected on both sides of the hinged portion, one side of the support portion extends to the lower end of the threaded hole, and a predetermined angle is formed between the hook body portion and the support portion.

[0011] Furthermore, a slot is provided on the support portion, a connecting sleeve is slidably connected in the slot, and an anti-slip sleeve abutting against one end of the bolt is rotatably connected in the connecting sleeve.

[0012] Furthermore, an anti-slip block abutting against the bolt is arranged on the inner wall of the anti-slip sleeve, the anti-slip block has an inclined surface in contact with the bolt, the inclined surface is provided with anti-slip grooves, and an elastic member is also arranged between the anti-slip block and the anti-slip sleeve.

[0013] Furthermore, the elastic member is configured as a rubber pad.

[0014] Further, a reinforcing plate is welded to the lower side of the upper channel steel.

[0015] Furthermore, the civil air defense door is filled with fire-fighting sand.

[0016] The beneficial effect of the present application is that it provides a heavy-duty hook with double protection for civil defense door leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0019] In the attached picture:

[0020] Figure 1 is a front view schematic diagram according to an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A schematic side view of an embodiment;

[0022] Figure 3 yes Figure 1 A schematic structural diagram of a limit hook plate in an embodiment;

[0023] Figure 4 yes Figure 1 A schematic cross-sectional view of the anti-slip cover in an embodiment.

[0024] Reference numerals:

[0025] 100. Upper channel steel; 101. Eye plate; 102. Eye hole; 103. Reinforcement rib; 104. Reinforcement plate; 105. Bolt; 106. Threaded hole; 107. Through hole; 108. Gasket; 109. Support groove; 110. Limiting hook plate; 111. Hinge portion; 112. Hook body portion; 113. Support portion; 114. Slot; 115. Connecting sleeve; 116. Anti-slip sleeve; 117. Anti-sliding block; 118. Inclined surface; 120. Rubber pad. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0028] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Reference Figure 1-4 , a heavy-duty hook for a civil air defense door leaf, including: an upper channel steel 100, a lifting ring plate 101, a lifting ring hole 102, a reinforcing rib 103, a reinforcing plate 104, and a bolt 105. The upper channel steel 100 is welded and arranged on the upper side of the civil air defense door, and the civil air defense door is filled with fire sand. There are two lifting ring plates 101, which are welded and arranged on the upper channel steel 100. The lifting ring plates 102 are L-shaped structures, wherein the shorter parts of the two lifting ring plates 102 are welded on the upper end surface of the upper channel steel 100, and the longer parts of the two lifting ring plates 101 are welded to each other. The lifting ring hole 102 is opened at the center of the longer part of the lifting ring plate 104, and the two lifting ring holes 101 overlap for lifting. The reinforcing rib 103 is welded between the longer part and the shorter part of the lifting ring plate 101 to ensure the structural strength of the lifting ring plate 101.

[0032] The upper and lower sides of the upper channel steel 100 are welded and fixedly connected with a reinforcing plate 104, and the reinforcing plate 104 and the upper channel steel 100 are both provided with concentrically arranged threaded holes 106, and the shorter part of the eye plate 101 is provided with a through hole 107 concentrically arranged with the threaded hole 106, and the bolt 105 passes through the through hole 107 and is threadedly connected with the threaded hole 106, wherein a gasket 108 is provided between the end portion of the bolt 105 and the eye plate 101. When the welding between the eye plate 101 and the upper channel steel 100 is loose, the bolt 105 can be tightened.

[0033] The reinforcing plate 104 is provided with a support assembly, which includes: a support groove 109 provided at the lower side of the reinforcing plate 104 and a limit hook plate 110 provided on the reinforcing plate 104. The limit hook plate 110 includes: a hinged portion 111 hinged in the support groove 109, a hook body portion 112 and a support portion 113 fixedly connected at both sides of the hinged portion 111, one side of the support portion 113 extends to the lower end of the threaded hole 106, and an angle of at least ninety degrees is formed between the hook body portion 112 and the support portion 113. A slot 114 is provided on the support portion 113, a connecting sleeve 115 is slidably connected in the slot 114, and an anti-slip sleeve 116 abutting against one end of the bolt is rotatably connected in the connecting sleeve 115. The anti-slip sleeve 116 is squeezed by one end of the bolt to make the connecting sleeve 115 slide in the slot, and the supporting portion 113 is deflected, thereby driving the hook body 112 to deflect, so that the hook body 112 is inserted into the fire sand in the civil air defense door to ensure the connection strength.

[0034] An anti-slip block 117 is provided on the inner wall of the anti-slip sleeve 116 to abut against the bolt. The anti-slip block 117 has an inclined surface 118, and an anti-slip pattern is provided on the inclined surface 118. A rubber pad 120 is also provided between the anti-slip block 117 and the anti-slip sleeve 116. When the bolt 105 is screwed so that one end of the bolt 105 is inserted into the anti-slip sleeve 116, the bolt 105 rotates in the forward direction, and the anti-slip block 117 abuts against the bolt 105 under the action of the rubber pad 120. At this time, under the action of the inclined surface 118, the anti-slip block 117 cannot limit the bolt 105. When the bolt 105 rotates in the reverse direction, the anti-slip pattern on the inclined surface 118 limits the bolt 105.

[0035] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. Heavy-duty hook for civil air defense door leaf, characterized by: include: Upper channel steel, installed on the civil air defense door; The lifting ring assembly is welded and fixed on the upper channel steel and is used to lift the civil air defense door; The lifting ring assembly includes: There are two lifting ring plates, which are set as L-shaped plate structures, wherein the shorter parts of the two lifting ring plates are fitted and fixed on the upper end surface of the upper channel steel, and the longer parts of the two lifting ring plates are fitted to each other; The eyelet hole is opened in the center of the longer part of the eyelet plate; The upper and lower sides of the upper channel steel are fixedly connected with reinforcing plates, and the reinforcing plates and the upper channel steel are both provided with concentrically arranged threaded holes, and the shorter part of the eye plate is provided with a through hole concentrically arranged with the threaded hole, and the bolt passes through the through hole and is threadedly connected with the threaded hole; The bolt passes through the through hole and is threadedly connected with the threaded hole.

2. The heavy-duty hook for civil air defense door leaf according to claim 1 is characterized in that: A reinforcing rib is arranged between the longer part and the shorter part of the lifting ring plate, and the reinforcing rib is arranged on both sides of the lifting ring hole.

3. The heavy-duty hook for civil air defense door leaf according to claim 1 is characterized in that: The reinforcing plate is provided with a supporting assembly, and the supporting assembly comprises: A support groove is provided on the reinforcing plate; The limiting hook plate is arranged on the reinforcing plate.

4. The heavy-duty hook for civil air defense door leaf according to claim 3 is characterized in that: The limiting hook plate comprises: A hook body and a support part are hinged in the support groove and fixedly connected to the hinge part at both sides of the hinge part. One side of the support part extends to the lower end of the threaded hole, and a predetermined angle is formed between the hook body and the support part.

5. The heavy-duty hook for civil air defense door leaf according to claim 4 is characterized in that: The support portion is provided with a slot, a connecting sleeve is slidably connected in the slot, and an anti-slip sleeve abutting against one end of the bolt is rotatably connected in the connecting sleeve.

6. The heavy-duty hook for civil air defense door leaf according to claim 5, characterized in that: An anti-slip block abutting against the bolt is arranged on the inner wall of the anti-slip sleeve, the anti-slip block has an inclined surface contacting the bolt, the inclined surface is provided with anti-slip lines, and an elastic member is further arranged between the anti-slip block and the anti-slip sleeve.

7. The heavy-duty hook for civil air defense door leaf according to claim 6, characterized in that: The elastic member is configured as a rubber pad.

8. The heavy-duty hook for civil air defense door leaf according to claim 1 is characterized in that: The reinforcing plate is welded to the lower side of the upper channel steel.

9. The heavy-duty hook for civil air defense door leaf according to claim 1, characterized in that: The civil air defense door is filled with fire sand.

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