A tilting door hinge welding positioning device

Abstract

The utility model belongs to the safe door processing technical field, concretely relates to a kind of inclined door shaft welding positioning device, including a pair of parallel arrangement screw rod, one end of screw rod penetrates and installs first rectangular steel sheet, the end of screw rod with thread installs second rectangular steel sheet, first rectangular steel sheet between fixed mounting first receiving plate, second rectangular steel sheet between installing second receiving plate, first receiving plate end fixed mounting first L type steel sheet, second receiving plate end fixed mounting second L type steel sheet, short steel sheet is set perpendicular to first L type steel sheet, first round hole is set in short steel sheet, long steel plate is installed perpendicular to second L type steel sheet bottom, and second round hole is set in long steel plate, and the second round hole and first round hole center line is inclined to screw rod central axis.

Description

Technical Field

[0001] This utility model belongs to the field of security door processing technology, and in particular relates to an inclined door hinge welding and positioning device. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] Safety doors are important equipment in production and daily life, and are widely used in the mechanical field, such as ladders and platform entrances of large lifting equipment in ports.

[0004] The tilting gravity safety self-closing door mainly achieves the closing action through the tilted door hinge. The door hinge has a certain tilt angle with the ground. When the door is opened, the force applied by the human body causes the door to rotate along the tilted door hinge, the center of gravity of the door moves upward, the gravitational potential energy increases, and at the same time the weight of the door itself generates a component force along the tilting direction of the door hinge to form a torque, causing the door to rotate around the tilted door hinge in the closing direction, thus completing the closing action.

[0005] Because the tilting door hinge exhibits a multi-dimensional angular offset in the Cartesian coordinate system, there are problems such as positioning difficulties or large errors during the welding process. Utility Model Content

[0006] To solve the technical problem of difficult door hinge positioning, this utility model proposes an inclined door hinge welding positioning device.

[0007] According to some embodiments, the present invention adopts the following technical solution: An inclined door hinge welding positioning device includes a pair of parallel threaded rods. One end of each threaded rod is connected to a first rectangular steel plate, and the threaded end of each threaded rod is connected to a second rectangular steel plate. A first receiving plate is fixedly installed between the first rectangular steel plates, and a second receiving plate is installed between the second rectangular steel plates. A first L-shaped steel plate is fixedly installed at the end of the first receiving plate, and a second L-shaped steel plate is fixedly installed at the end of the second receiving plate. A short steel plate is set perpendicular to the first L-shaped steel plate. The short steel plate has a first circular hole, and the second L-shaped steel plate has a second circular hole. The line connecting the center of the second circular hole and the center of the first circular hole is inclined to the central axis of the threaded rod.

[0008] A further configuration is provided, wherein the first receiving plate has a first recess in the direction away from the first L-shaped steel plate.

[0009] A further configuration is provided, wherein the second receiving plate has a second recess in the direction away from the second L-shaped steel plate.

[0010] Further configured, the side wall of the second L-shaped steel plate is parallel to the side wall of the short steel plate.

[0011] A further configuration is provided where a stop block is provided at the top of the first rectangular steel plate, and the threaded rod is vertically disposed on the side wall of the stop block.

[0012] A further configuration is made where the length of the stop is greater than the diameter of the threaded rod.

[0013] The first and second concave cavities are further configured such that their cross-sections are semi-circular, and their openings are positioned opposite each other.

[0014] Further configured, the first cavity and the second cavity are respectively installed on the doorpost of the safety door.

[0015] A further configuration is provided whereby a limiting plate extends outward from the outer side of the first L-shaped steel plate, and the limiting plate is parallel to the short steel plate.

[0016] A further configuration is provided, wherein the limiting plate and the first L-shaped steel plate are provided with a transition rounded corner, and the limiting plate and the first L-shaped steel plate are integrally formed.

[0017] The beneficial effects of this utility model are as follows: This invention involves sequentially inserting a safety door pivot into a second L-shaped steel plate with a round hole and a short steel plate with a round hole. During hole processing, the positions of the round holes are determined according to the required tilt angle of the safety door pivot. The cavities of the first and second receiving plates are placed correspondingly on the doorposts of the safety door, ultimately completing the welding of the safety door pivot. This method precisely controls the angle of the pivot in space while restricting its degree of freedom in the axial direction, preventing angular deflection and axial movement during welding. It not only improves the positioning accuracy of the safety door pivot but also optimizes the welding process, reduces repetitive work caused by positioning deviations, and significantly improves welding efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model fixed on a security door.

[0021] Figure 3 for Figure 2 A-direction view.

[0022] Explanation of reference numerals in the attached figures: 1. First L-shaped steel plate; 2. Short steel plate; 21. First round hole; 3. First rectangular steel plate; 4. Second rectangular steel plate; 5. Threaded rod; 7. Second L-shaped steel plate; 8. Second round hole; 9. First cavity; 91. Second cavity; 10. Door hinge; 11. First receiving plate; 12. Second receiving plate; 13. Limiting plate; 14. Safety door post; 15. Baffle; 16. Transition rounded corner. Detailed implementation method: The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] Example 1 A tilting door hinge welding positioning device, reference Figure 1 and Figure 2 It includes a pair of parallel threaded rods 5, one end of which is equipped with a first rectangular steel plate 3, and the threaded end of which is equipped with a second rectangular steel plate 4. A first receiving plate 11 is fixedly installed between the first rectangular steel plates 3, and a second receiving plate 12 is installed between the second rectangular steel plates 4. A first L-shaped steel plate 1 is fixedly installed at the end of the first receiving plate 11, and a second L-shaped steel plate 7 is fixedly installed at the end of the second receiving plate 12. A short steel plate 2 is set perpendicular to the first L-shaped steel plate 1, with a first circular hole 21 on the short steel plate 2. A second circular hole 8 is set on the second L-shaped steel plate 7. The line connecting the centers of the second circular hole 8 and the first circular hole 21 is inclined to the central axis of the threaded rod 5. Through the combination of a pair of parallel threaded rods 5 and a series of steel plates, and in conjunction with the first concave cavity 9 and the second concave cavity 91, multi-dimensional angular stable positioning of the door hinge 10 is achieved during the welding process. The line connecting the centers of the first circular hole 21 and the second circular hole 8 is inclined to the central axis of the threaded rod 5, which directly corresponds to the required tilt angle of the door hinge 10, ensuring the precise orientation of the door hinge 10 in space.

[0025] Furthermore, in order to fix the first receiving plate 11 and the second receiving plate 12, the first receiving plate 11 has a first recess 9 in the direction away from the first L-shaped steel plate 1, and the second receiving plate 12 has a second recess 91 in the direction away from the second L-shaped steel plate 7. During installation, the first recess 9 and the second recess 91 are attached to the arc-shaped side wall of the safety door post, and then the second rectangular steel plate 4 is connected to the threaded rod 5 by threads, so as to ensure that the positioning device will not be shifted by external force during the welding process. The first recess 9 and the second recess 91 can better fit the curved surface or edge of the safety door post 14, increase the contact area, and provide more stable support. The arc surface of the first recess 9 and the second recess 91 and the safety door post 14 are fastened together for temporary positioning. After the rotating shaft is welded, it is easy to remove the positioning device.

[0026] Furthermore, the side wall of the second L-shaped steel plate 7 is parallel to the side wall of the short steel plate 2, which reduces assembly errors and ensures that the door hinge 10 through which the first round hole 21 and the second round hole 8 pass is inclined.

[0027] Furthermore, a baffle 15 is provided on the top of the first rectangular steel plate 3, and the threaded rod 5 is vertically arranged on the side wall of the baffle 15. The baffle 15 restricts the maximum range of motion of the threaded rod 5, and the threaded rod 5 can move to the position of the baffle 15 at most. The first L-shaped steel plate 1, the short steel plate 2, the first rectangular steel plate 3 and the first receiving plate 11 are connected together by welding; the second rectangular steel plate 4, the second receiving plate 12 and the second L-shaped steel plate 7 are connected together by welding.

[0028] Furthermore, the length of the side of the baffle 15 is greater than the diameter of the threaded rod 5, providing a wider support surface and limiting the maximum range of motion of the threaded rod 5. The setting of the stop block ensures the limiting of the threaded rod 5 and prevents the threaded rod 5 from sliding out of the first rectangular steel plate 3. The setting of the threaded rod 5 ensures that the distance between the first rectangular steel plate 3 and the second rectangular steel plate 4 is adjustable, thereby adapting to different gatepost heights.

[0029] Furthermore, the first cavity 9 and the second cavity 91 have semi-circular cross sections, and the openings of the first cavity 9 and the second cavity 91 are arranged opposite to each other. The first cavity 9 and the second cavity 91 are height-matched with the circular cross section of the safety door post 14, which increases the tightness of the contact and reduces the positioning error caused by the gap. The opposite arrangement of the first cavity 9 and the second cavity 91 ensures that the positioning device is restricted on the revolving door from both the upper and lower directions. Then, the first cavity 9 and the second cavity 91 are placed on the safety door post accordingly.

[0030] Furthermore, the first cavity 9 and the second cavity 91 are respectively installed on the safety door post 14. The first cavity 9 and the second cavity 91 directly cooperate with the safety door post 14, so that the device and the post form an integrated connection, reducing the cumulative error of intermediate links. This positioning is directly based on the geometric features of the post, ensuring the accuracy of the welding angle of the door hinge 10 and simplifying the on-site installation steps.

[0031] Furthermore, a limiting plate 13 is provided on the outer side of the first L-shaped steel plate 1. The first L-shaped steel plate 1 and the limiting plate 13 are formed by bending a single steel plate. The limiting plate 13 is parallel to the short steel plate 2. The extension of the limiting plate 13 adds extra constraint to the end of the door hinge 10. After the door hinge 10 passes through, since there is no obstruction at the top, the door hinge 10 will slide out along the first round hole 21. Therefore, the baffle prevents the door hinge 10 from sliding out, and the limiting plate 13 prevents the door hinge 10 from sliding out of the first round hole 21.

[0032] Furthermore, the limiting plate 13 and the first L-shaped steel plate 1 are provided with a transition fillet 16. The limiting plate 13 and the first L-shaped steel plate 1 are integrally formed. The transition fillet 16 design reduces stress concentration and improves the mechanical strength and fatigue resistance of the components. The integral forming manufacturing ensures a seamless connection between the limiting plate 13 and the first L-shaped steel plate 1, avoids assembly errors, enhances the rigidity of the overall structure, and makes the device more durable and easier to manufacture.

[0033] The positioning process is as follows: First, align the first cavity 9 and the second cavity 91 with the circular doorposts of the revolving door. Pass the threaded rod 5 through the first rectangular plate 3. Adjust the threaded rod 5 according to the different heights between the doorposts. Then tighten the threaded rod 5. At this time, the first cavity 9 and the second cavity 91 fit and lock onto the side wall of the circular safety doorpost 14. Then insert the door hinge 10 along the first circular hole 21 and the second circular hole 8. At this time, the door hinge 10 is tilted and positioned with the revolving door.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0035] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A tilting door hinge welding positioning device, characterized in that, It includes a pair of parallel threaded rods, one end of which is installed through a first rectangular steel plate, and the threaded end of which is installed with a second rectangular steel plate. A first receiving plate is fixedly installed between the first rectangular steel plates, and a second receiving plate is installed between the second rectangular steel plates. A first L-shaped steel plate is fixedly installed at the end of the first receiving plate, and a second L-shaped steel plate is fixedly installed at the end of the second receiving plate. A short steel plate is set perpendicular to the first L-shaped steel plate. The short steel plate has a first circular hole, and the second L-shaped steel plate has a second circular hole. The line connecting the center of the second circular hole and the center of the first circular hole is inclined to the central axis of the threaded rod.

2. The inclined door hinge welding positioning device as described in claim 1, characterized in that, The first receiving plate has a first cavity in the direction away from the first L-shaped steel plate.

3. The inclined door hinge welding positioning device as described in claim 2, characterized in that, The second receiving plate has a second cavity in the direction away from the second L-shaped steel plate.

4. The inclined door hinge welding positioning device as described in claim 1, characterized in that, The side wall of the second L-shaped steel plate is parallel to the side wall of the short steel plate.

5. The inclined door hinge welding positioning device as described in claim 1, characterized in that, The first rectangular steel plate has a stop block at the top, and the threaded rod is vertically disposed on the side wall of the stop block.

6. The inclined door hinge welding positioning device as described in claim 5, characterized in that, The length of the stop block is greater than the diameter of the threaded rod.

7. The inclined door hinge welding positioning device as described in claim 3, characterized in that, The first and second concave cavities have semi-circular cross-sections, and the openings of the first and second concave cavities are arranged opposite to each other.

8. The inclined door hinge welding positioning device as described in claim 3, characterized in that, The first and second recesses are installed on the doorposts of the safety gate respectively.

9. The inclined door hinge welding positioning device as described in claim 1, characterized in that, A limiting plate is provided on the outer side of the first L-shaped steel plate, and the limiting plate is parallel to the short steel plate.

10. The inclined door hinge welding positioning device as described in claim 9, characterized in that, The limiting plate and the first L-shaped steel plate are provided with a transition rounded corner, and the limiting plate and the first L-shaped steel plate are integrally formed.

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