Door closer for safe maintenance of power distribution room

Abstract

The utility model discloses a door closer for safe overhauling of power distribution room, including door closer, connecting component, the connecting component includes first L type connecting rod, second L type connecting rod, adjusting hole and opposite screw bolt, first L type connecting rod one end is fixed on the pivot of hydraulic cylinder upper end, and second L type connecting rod one end is rotatably connected in the one end of damping bar, and adjusting hole is established respectively in first L type connecting rod and second L type connecting rod one end, and opposite screw bolt is inserted in the adjusting hole of first L type connecting rod and second L type connecting rod, and is fastened with nut. The utility model discloses a connecting component, and the connecting component adopts L type connecting rod and opposite screw bolt adjusting mechanism, and the relative height of hydraulic cylinder end and damping bar end is adjusted freely through adjusting hole, overcomes the technical defects that traditional door closer fixed connecting rod can not dynamically adapt the door body / door frame spacing, and simultaneously utilizes the plug -in rod -insertion hole positioning system, and the connection reliability is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of door closer technology, specifically a door closer for safety maintenance in power distribution rooms. Background Technology

[0002] A door closer is a mechanical device installed on a door, primarily used to automatically close the door. In the safety management of fire-resistant compartments such as electrical distribution rooms, fire doors must be equipped with reliable door closers to ensure automatic closure in the event of a fire.

[0003] However, existing door closers generally suffer from the following drawbacks: traditional door closers have a fixed linkage structure, requiring pre-setting of the height at both ends during installation and lacking the ability to quickly adapt to different door and frame spacings. Therefore, a door closer for safe maintenance in electrical distribution rooms is needed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a door closer for safe maintenance in power distribution rooms, thereby solving the problems mentioned in the background section. To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a door closer for safety maintenance in a power distribution room, comprising:

[0006] A door closer, wherein the hydraulic cylinder end of the door closer is fixed to the door body, the fixing frame is fixed to the door frame, and the middle is rotatably connected by a connecting rod and a damping rod;

[0007] The connecting assembly includes a first L-shaped connecting rod, a second L-shaped connecting rod, adjusting holes, and through bolts. One end of the first L-shaped connecting rod is fixed to the rotating shaft at the upper end of the hydraulic cylinder, and one end of the second L-shaped connecting rod is rotatably connected to one end of the damping rod. Adjusting holes are respectively opened at one end of the first L-shaped connecting rod and the second L-shaped connecting rod. The through bolts are inserted into the adjusting holes of the first L-shaped connecting rod and the second L-shaped connecting rod and tightened with nuts.

[0008] Furthermore, the connecting assembly also includes a plug rod and a socket. The plug rod is fixed to one end of the first L-shaped connecting rod and the second L-shaped connecting rod located at the adjustment hole, and the socket is opened in the middle of the first L-shaped connecting rod and the second L-shaped connecting rod, and is close to the adjustment hole.

[0009] Furthermore, the first L-shaped connecting rod is inserted into the second L-shaped connecting rod, and the second L-shaped connecting rod is inserted into the first L-shaped connecting rod.

[0010] Furthermore, the second L-shaped connecting rod is located above the first L-shaped connecting rod and below the damping rod.

[0011] Furthermore, it also includes a reinforcement component, which includes a reinforcing plate and a groove. The reinforcing plate is fixed to the middle of both sides of the insertion rod and is respectively attached to the first L-shaped connecting rod and the second L-shaped connecting rod. The groove is opened on both sides of the insertion hole.

[0012] Furthermore, the reinforcing plate on the first L-shaped connecting rod is movably connected within and below the groove of the second L-shaped connecting rod, and the reinforcing plate on the second L-shaped connecting rod is movably connected within and above the groove of the first L-shaped connecting rod.

[0013] Furthermore, the insertion rod and the insertion hole are fitted with a clearance fit, and the reinforcing plate and the groove are fitted with a clearance fit.

[0014] This utility model has the following beneficial effects:

[0015] This invention, through its connecting assembly, allows for the following steps before installation: First, a first L-shaped connecting rod is fixed to the rotating shaft above the hydraulic cylinder. The insertion rod at one end of the second L-shaped connecting rod is inserted into the insertion hole of the first L-shaped connecting rod. A through bolt is inserted through two adjustment holes, and nuts are tightened. The hydraulic cylinder end and the fixing frame end of the door closer are then fixed at appropriate positions on the door body and door frame, respectively. Finally, the nuts on the through bolts are tightened. This design utilizes an L-shaped connecting rod and a through bolt adjustment mechanism, allowing for free adjustment of the relative height between the hydraulic cylinder end and the damping rod end through the adjustment holes. This overcomes the technical defect of traditional door closer fixing rods that cannot dynamically adapt to the distance between the door body and door frame. Furthermore, the insertion rod-insertion hole positioning system significantly improves connection reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first L-shaped connecting rod structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the second L-shaped connecting rod structure of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 10. Door closer; 20. First L-shaped connecting rod; 21. Second L-shaped connecting rod; 22. Adjustment hole; 23. Through bolt; 24. Insert rod; 25. Insert hole; 30. Reinforcing plate; 31. Groove. Detailed Implementation

[0022] 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.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Please see Figure 1-3 As shown, this utility model is a door closer for safety maintenance in a power distribution room, comprising:

[0025] The door closer 10 has its hydraulic cylinder end fixed to the door body and its fixing bracket fixed to the door frame. The two parts are rotatably connected by a connecting rod and a damping rod.

[0026] The door closer 10 automatically closes an open door. During the opening phase, when the door is opened, the door body drives the linkage to move, which in turn drives the transmission gear to rotate, causing the rack plunger to move to the right. During this process, the return spring is compressed, and the hydraulic oil in the right cavity of the hydraulic cylinder pushes open the one-way valve under pressure and flows into the left cavity. During the closing phase, after the opening action is completed, the previously compressed return spring begins to release its stored elastic potential energy, pushing the rack plunger to move back to the left. At this time, the hydraulic oil in the left cavity, due to the closed one-way valve, can only slowly flow back to the right cavity through the gap between the plunger and the valve body and the flow channel controlled by the throttling valve core. This throttling process of the hydraulic oil produces a damping effect, thereby effectively controlling the closing speed of the door and ensuring that the door can close smoothly.

[0027] The connecting assembly includes a first L-shaped connecting rod 20, a second L-shaped connecting rod 21, an adjusting hole 22, and a through bolt 23. One end of the first L-shaped connecting rod 20 is fixed to the rotating shaft at the upper end of the hydraulic cylinder, and one end of the second L-shaped connecting rod 21 is rotatably connected to one end of the damping rod. The adjusting holes 22 are respectively opened at one end of the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21. The through bolt 23 is inserted into the adjusting holes 22 of the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21 and is tightened with a nut.

[0028] The connecting assembly also includes a plug rod 24 and a socket 25. The plug rod 24 is fixed to one end of the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21 located in the adjustment hole 22, respectively. The socket 25 is opened in the middle of the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21, and is close to the adjustment hole 22.

[0029] The insertion rod 24 of the first L-shaped connecting rod 20 is inserted into the insertion hole 25 of the second L-shaped connecting rod 21, and the insertion rod 24 of the second L-shaped connecting rod 21 is inserted into the insertion hole 25 of the first L-shaped connecting rod 20.

[0030] The second L-shaped connecting rod 21 is located above the first L-shaped connecting rod 20 and below the damping rod;

[0031] The first L-shaped connecting rod 20 and the second L-shaped connecting rod 21 are used to connect the hydraulic cylinder end of the door closer 10 and the damping rod. The adjusting hole 22, in conjunction with the through bolt 23, is used to adjust the height between the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21. The insertion rod 24 and the insertion hole 25 serve a positioning function to facilitate the alignment of the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21.

[0032] Working principle:

[0033] Before installation, fix the first L-shaped connecting rod 20 on the rotating shaft above the hydraulic cylinder. Insert the insertion rod 24 at one end of the second L-shaped connecting rod 21 into the insertion hole 25 of the first L-shaped connecting rod 20. Insert the through bolt 23 through the two adjustment holes 22, tighten the nuts, and fix the hydraulic cylinder end and the fixing bracket end of the door closer 10 at appropriate positions on the door body and door frame, respectively. Finally, tighten the nuts on the through bolt 23.

[0034] In this step, the connecting component adopts an L-shaped connecting rod and a through bolt 23 adjustment mechanism. The relative height between the hydraulic cylinder end and the damping rod end can be freely adjusted through the adjustment hole 22, which overcomes the technical defect that the fixed connecting rod of the traditional door closer 10 cannot dynamically adapt to the door / door frame spacing. At the same time, the positioning system of the insertion rod 24-insertion hole 25 is used to significantly improve the connection reliability.

[0035] Please see Figure 2-3 As shown, this embodiment, based on the above embodiment, further includes:

[0036] The reinforcement component includes a reinforcing plate 30 and a groove 31. The reinforcing plate 30 is fixed to the middle of both sides of the insertion rod 24 and is respectively attached to the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21. The groove 31 is opened on both sides of the insertion hole 25.

[0037] The reinforcing plate 30 on the first L-shaped connecting rod 20 is movably connected to the groove 31 and below the second L-shaped connecting rod 21, and the reinforcing plate 30 on the second L-shaped connecting rod 21 is movably connected to the groove 31 and above the first L-shaped connecting rod 20.

[0038] The insertion rod 24 is clearance-fitted with the insertion hole 25, and the reinforcing plate 30 is clearance-fitted with the groove 31.

[0039] The reinforcing plate 30 is used to reinforce the insertion rod 24, and the groove 31 facilitates the adjustment of the position of the reinforcing plate 30 with the insertion rod 24.

[0040] Working principle:

[0041] When connecting the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21, the insert rod 24 is inserted into the insertion hole 25. At this time, the reinforcing plate 30 is inserted into the groove 31 to fix the hydraulic cylinder end. Pull the second L-shaped connecting rod 21 to drive the insert rod 24 to move in the insertion hole 25. At the same time, the reinforcing plate 30 moves in the groove 31 to fix the door closer 10 fixing frame end in the appropriate position of the door frame. Tighten the nut on the through bolt 23 in the adjustment hole 22.

[0042] This step increases the strength of the insertion rod 24 and reduces the damage at the connection between the first L-shaped connecting rod 20 and the second L-shaped connecting rod 21.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A door closer for safety maintenance in a power distribution room, characterized in that, include: Door closer (10), the hydraulic cylinder end of the door closer (10) is fixed on the door body, the fixing frame is fixed on the door frame, and the middle is rotatably connected by a connecting rod and a damping rod; The connecting assembly includes a first L-shaped connecting rod (20), a second L-shaped connecting rod (21), an adjusting hole (22), and a through bolt (23). One end of the first L-shaped connecting rod (20) is fixed to the rotating shaft at the upper end of the hydraulic cylinder, and one end of the second L-shaped connecting rod (21) is rotatably connected to one end of the damping rod. The adjusting hole (22) is respectively opened at one end of the first L-shaped connecting rod (20) and the second L-shaped connecting rod (21). The through bolt (23) is inserted into the adjusting hole (22) of the first L-shaped connecting rod (20) and the second L-shaped connecting rod (21) and tightened with a nut.

2. The door closer for safety maintenance of power distribution rooms according to claim 1, characterized in that: The connecting assembly further includes a plug rod (24) and a socket (25). The plug rod (24) is fixed to one end of the first L-shaped connecting rod (20) and the second L-shaped connecting rod (21) located in the adjustment hole (22). The socket (25) is opened in the middle of the first L-shaped connecting rod (20) and the second L-shaped connecting rod (21) and is close to the adjustment hole (22).

3. The door closer for safety maintenance of power distribution rooms according to claim 1, characterized in that: The insertion rod (24) of the first L-shaped connecting rod (20) is inserted into the insertion hole (25) of the second L-shaped connecting rod (21), and the insertion rod (24) of the second L-shaped connecting rod (21) is inserted into the insertion hole (25) of the first L-shaped connecting rod (20).

4. The door closer for safety maintenance of power distribution rooms according to claim 1, characterized in that: The second L-shaped connecting rod (21) is located above the first L-shaped connecting rod (20) and below the damping rod.

5. The door closer for safety maintenance in a power distribution room according to claim 2, characterized in that: It also includes a reinforcement component, which includes a reinforcing plate (30) and a groove (31). The reinforcing plate (30) is fixed to the middle of both sides of the insertion rod (24) and is respectively attached to the first L-shaped connecting rod (20) and the second L-shaped connecting rod (21). The groove (31) is opened on both sides of the insertion hole (25).

6. The door closer for safety maintenance of power distribution rooms according to claim 1, characterized in that: The reinforcing plate (30) on the first L-shaped connecting rod (20) is movably connected to the groove (31) and below the second L-shaped connecting rod (21), and the reinforcing plate (30) on the second L-shaped connecting rod (21) is movably connected to the groove (31) and above the first L-shaped connecting rod (20).

7. The door closer for safety maintenance of power distribution rooms according to claim 2, characterized in that: The insertion rod (24) is fitted with the insertion hole (25) with a clearance, and the reinforcing plate (30) is fitted with the groove (31) with a clearance.

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