Door lock structure of box transformer substation

Abstract

The utility model relates to the technical field of box-type transformer substations, in particular to a box-type transformer substation door lock structure which comprises a lock cylinder arranged on a box door, a rotating piece is fixedly connected to the lock cylinder, limiting rods are rotatably connected to the two ends of the rotating piece, a connecting rod is arranged at the end, away from a connecting piece, of each limiting rod, and the connecting piece is fixedly connected to the rotating piece. The connecting rod is provided with a through hole for the mounting rod to extend into, and the two ends of the mounting rod are sleeved with rolling wheels. The scheme can solve the problem that the upper and lower ends of the box door are easy to shake, reduce the abrasion between the connecting rod and the door frame, and prolong the service life of the connecting rod and the door frame.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type transformer substations, in particular to a box-type transformer substation door lock structure. Background Art

[0002] A box-type substation is a factory-prefabricated indoor or outdoor compact distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme. It organically combines the functions of high-voltage power receiving, transformer step-down, and low-voltage distribution. It is installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulated, fully enclosed, movable steel structure box. It is mechatronic and operates in a fully enclosed manner. It is particularly suitable for urban network construction and renovation. It is a new type of substation that has emerged after the civil substation.

[0003] To protect these devices from the outside environment and prevent unauthorized access, substations are usually equipped with specially designed doors to ensure safety.

[0004] The doors of traditional box-type substations usually use single-point locking, that is, after the door is closed, it is fixed by only one locking point. This design can meet basic safety requirements to a certain extent. However, since the size of box-type substations is generally large, the length and width of the door are very large. Single-point locking will cause the upper and lower ends of the door to shake easily after the door is locked.

[0005] To address the issue of the upper and lower ends of the door being prone to wobbling, Chinese patent publication number CN202467388U discloses a door lock for a box-type substation. The lock includes a lock cylinder with a connecting plate rotatably connected to it, and connecting rods rotatably connected to both ends of the connecting plate. When the lock cylinder is rotated, the connecting plate rotates with it, driving the connecting rod hinged to the connecting plate to move. This causes the upper connecting rod to move upward above the top inner edge of the door frame, while the lower connecting rod moves downward below the bottom inner edge of the door frame. This simultaneously restrains the upper and lower ends of the door, preventing it from wobbling and greatly reducing the risk of the door being pried open.

[0006] The above solution realizes the synchronous fixation of the upper and lower ends of the door by the up and down movement of the upper and lower connecting rods, thereby solving the problem that the upper and lower ends of the door corresponding to the single-point locking are prone to shaking. However, in actual use, in addition to considering the firmness of the lock, the sealing of the door after closing must also be considered. Therefore, sealing strips for contact with the door are usually provided around the inner wall of the door frame. After the door is closed, the sealing strip is in close contact with the door to achieve all-round sealing of the door.

[0007] At this time, the gap setting between the upper and lower connecting rods and the top inner edge and bottom inner edge of the door frame becomes very critical. If no gap is set, then long-term close contact will cause increased wear between the connecting rod and the door frame, reducing the service life of the corresponding equipment. If a gap is set, then the problem of the upper and lower ends of the box door being prone to shaking cannot be solved.

[0008] Based on this, there is an urgent need for a box-type door lock structure that can solve the problem of easy shaking at the upper and lower ends of the box door while reducing the wear between the connecting rod and the door frame, thereby increasing the service life of the connecting rod and the door frame. Utility Model Content

[0009] The technical problem solved by the utility model is to provide a box-type door lock structure, which can solve the problem that the upper and lower ends of the box door are prone to shaking, while reducing the wear between the connecting rod and the door frame, and improving the service life of the connecting rod and the door frame.

[0010] The basic solution provided by the present utility model is: a box-type door lock structure, including a lock core arranged on the box door, a rotating plate fixedly connected to the lock core, both ends of the rotating plate are rotatably connected to the limit rod, and also includes: a connecting rod is provided on the end of the limit rod away from the connecting plate, a through hole is opened on the connecting rod for the installation rod to extend into, and rollers are provided on both ends of the installation rod.

[0011] The principle and advantage of the present utility model are that: in this scheme, when the operator rotates the lock cylinder forward, as the lock cylinder rotates forward, the rotating piece fixedly connected to the lock cylinder is driven to rotate forward. As the rotating piece rotates forward, the limit rods arranged at both ends of the rotating piece will also move, that is, the limit rod arranged at the upper end moves upward until the roller at the upper end of the limit rod is higher than the inner edge of the top plate of the door frame of the box-type substation, and the limit rod arranged at the lower end moves downward until the roller at the lower end of the limit rod is lower than the inner edge of the bottom plate of the door frame of the box-type substation. At this time, the lock cylinder is in a locked state, the rotating piece is fixed continuously, and the rollers will respectively squeeze against the inner edge of the bottom plate and the inner edge of the top plate of the door frame, so that the upper and lower ends of the box door are limited at the same time to prevent the door from shaking, and at the same time make the box door in close contact with the sealing strip, thereby improving the sealing of the box door.

[0012] When the operator needs to open the door, the operator rotates the lock cylinder in the opposite direction. As the lock cylinder rotates in the opposite direction, the rotating piece fixed on the lock cylinder also rotates in the opposite direction. At this time, the limit rods set at both ends of the rotating piece also operate, that is, the limit rod set at the top moves downward until the roller at the uppermost section of the limit rod is lower than the inner edge of the top plate of the door frame of the box-type substation, and the limit rod set at the bottom moves upward until the roller at the lower end of the limit rod is higher than the inner edge of the bottom plate of the door frame of the box-type substation. At this time, the lock cylinder is in the open state, and then the door can be opened.

[0013] 1. The setting of the roller changes the original process of the connecting rod and the inner edge of the top plate and the inner edge of the bottom plate of the door frame contacting and wearing each other to the process of the connecting rod and the inner edge of the top plate and the inner edge of the bottom plate of the door frame contacting and wearing each other through the rolling of the roller, which greatly reduces wear while achieving synchronous fixation of the upper and lower ends of the door.

[0014] 2. The close contact between the roller and the door frame further makes the door and the sealing strip in close contact, greatly improving the sealing of the door after closing.

[0015] Furthermore, the connecting rod is tilted in a direction away from the lock core.

[0016] Beneficial effect: In this solution, the inclined setting of the connecting rod can greatly reduce the moving distance of the upper and lower limit rods.

[0017] Furthermore, the roller is made of a flexible insulating material.

[0018] Beneficial effect: The roller is made of flexible insulating material, which further reduces the wear of the door frame and improves safety.

[0019] Furthermore, it also includes an L-shaped mounting plate, the vertical plate of the L-shaped mounting plate is fixedly connected to the inner wall of the box door, and the horizontal plate of the L-shaped mounting plate is provided with a limiting through hole for the limiting rod to extend into.

[0020] Beneficial effect: The setting of the L-shaped mounting plate allows the upper and lower limiting rods to only rest against the door, which has a better fixing effect on the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the box-type substation in Example 1 of the present utility model.

[0022] Figure 2 This is a structural schematic diagram of a box-type transformer door lock structure installed on a box door at a certain angle in Example 1 of the present utility model.

[0023] Figure 3 In the first embodiment of the present utility model Figure 1 A partially enlarged schematic diagram of A. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The symbols in the drawings of the specification include: door frame 1, sealing strip 2, box door 3, lock cylinder 4, limit rod 5, connecting rod 6, roller 7, and connecting piece 8.

[0026] The embodiment is basically as shown in the attached Figure 1 、 Figure 2 and Figure 3 The figure shows a box-type transformer door lock structure, comprising a lock cylinder 4 mounted on a box door 3, a rotating plate fixedly connected to the lock cylinder 4, both ends of which are rotatably connected to a limit rod 5. A connecting rod 6 is provided on the end of the limit rod 5 away from the connecting plate 8. The connecting rod 6 has a through hole for the installation rod to extend into, and rollers 7 are sleeved on both ends of the installation rod. In this embodiment, the lock cylinder 4 and the connecting plate 8 are fixed at a central position by a pin, and both ends of the connecting plate 8 have installation through holes. The lower end of the limit rod 5 is a flat hinged portion with a first through hole for a latch to extend into. The latch passes through the first through hole of the hinged portion and then extends into the corresponding installation through hole to be fixed to the connecting plate 8.

[0027] The connecting rod 6 is tilted away from the lock core 4 .

[0028] The roller 7 is made of a flexible insulating material. In this embodiment, the roller 7 is made of a silicone material.

[0029] It also includes an L-shaped mounting plate, the vertical plate of which is fixedly connected to the inner wall of the door 3 by bolts and nuts, and the horizontal plate of the L-shaped mounting plate is provided with a limiting through hole for the limiting rod 5 to extend into.

[0030] When the operator rotates the lock cylinder 4 forward, as the lock cylinder 4 rotates forward, the rotating piece fixedly connected to the lock cylinder 4 is driven to rotate forward. As the rotating piece rotates forward, the limiting rods 5 set at both ends of the rotating piece will also move, that is, the limiting rod 5 set at the top moves upward until the roller 7 at the upper end of the limiting rod 5 is higher than the inner edge of the top plate of the door frame 1 of the box-type substation, and the limiting rod 5 set at the bottom moves downward until the roller 7 at the lower end of the limiting rod 5 is lower than the inner edge of the bottom plate of the door frame 1 of the box-type substation. At this time, the lock cylinder 4 is in a locked state, the rotating piece is fixed continuously, and the roller 7 will respectively squeeze against the inner edge of the bottom plate and the inner edge of the top plate of the door frame 1, thereby limiting the upper and lower ends of the box door 3 at the same time to prevent the door from shaking, and at the same time making the box door 3 in close contact with the sealing strip 2, thereby improving the sealing of the box door 3.

[0031] When the operator needs to open the box door 3, the operator rotates the lock cylinder 4 in the opposite direction. As the lock cylinder 4 rotates in the opposite direction, the rotating piece fixed on the lock cylinder 4 also rotates in the opposite direction. At this time, the limit rods 5 set at both ends of the rotating piece also operate, that is, the limit rod 5 set at the top moves downward until the roller 7 at the uppermost section of the limit rod 5 is lower than the inner edge of the top plate of the door frame 1 of the box-type substation, and the limit rod 5 set at the bottom moves upward until the roller 7 at the lower end of the limit rod 5 is higher than the inner edge of the bottom plate of the door frame 1 of the box-type substation. At this time, the lock cylinder 4 is in the open state, and then the box door 3 can be opened.

[0032] The above are only embodiments of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several variations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A door lock structure for a box-type transformer, comprising a lock core provided on the box door, a rotating plate fixedly connected to the lock core, and both ends of the rotating plate being rotatably connected to limit rods, characterized in that: Also includes: A connecting rod is provided on one end of the limiting rod away from the connecting piece. A through hole for the installation rod to extend into is opened on the connecting rod. Rollers are sleeved on both ends of the installation rod.

2. The door lock structure of a box-type transformer according to claim 1, characterized in that: The connecting rod is tilted in a direction away from the lock core.

3. The door lock structure of a box-type transformer according to claim 2, characterized in that: The roller is made of flexible insulating material.

4. The door lock structure of a box-type transformer according to claim 3, characterized in that: It also includes an L-shaped mounting plate, the vertical plate of the L-shaped mounting plate is fixedly connected to the inner wall of the box door, and the horizontal plate of the L-shaped mounting plate is provided with a limiting through hole for the limiting rod to extend into.

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