Door locking device of low-voltage power distribution cabinet

Abstract

The utility model discloses a door locking device for a low-voltage power distribution cabinet, belongs to the technical field of power distribution cabinet locking, and aims to solve the technical problems that a lower cabinet door and a low-voltage power distribution cabinet body are not tightly locked and are easily interfered by dust, mosquitoes and the like in the prior art. The door locking device of the low-voltage power distribution cabinet comprises a first operation rotating head, a second operation rotating head, a first lock shaft, a second lock shaft and a fixing block, the fixed block is fixed on the low-voltage power distribution cabinet body, the first lock shaft penetrates through the fixed block, a spring bolt is fixed at one end, facing the cabinet door, of the first lock shaft, a first operation rotating head is rotatably mounted at the position, corresponding to the spring bolt, of the cabinet door, and a lock cavity capable of allowing the spring bolt to rotate is formed in the first operation rotating head; the back face of the first operation rotating head is provided with a control device which communicates with the lock cavity and can allow the spring bolt to penetrate through. A sleeve block is arranged at the end, away from the spring bolt, of the first lock shaft, the second lock shaft is fixed to one side of the sleeve block, and the second lock shaft is perpendicular to the first lock shaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of power distribution cabinet locks, and in particular relates to a door locking device for a low-voltage power distribution cabinet. Background Art

[0002] The rated current of the low-voltage distribution cabinet is an AC 50Hz, rated voltage 380V distribution system. It is used for power conversion and control of power, lighting and distribution. It generally has the characteristics of strong breaking capacity, good dynamic thermal stability, flexible electrical scheme, convenient combination, series, strong practicality and novel structure.

[0003] At present, the cabinet doors of conventional low-voltage distribution cabinets usually adopt a traditional lock tongue structure to lock with the cabinet body. Although the locking method using the traditional lock tongue structure is simple in structure and easy to operate, the traditional lock tongue structure only relies on the card connection between the lock tongue and the lock hole to achieve the purpose of locking, and does not have a tightening function. After the cabinet door is locked with the low-voltage distribution cabinet body, there is often a gap between the cabinet door and the low-voltage distribution cabinet body, which is easily affected by dust and mosquitoes entering the low-voltage distribution cabinet body. For this reason, the present application proposes a low-voltage distribution cabinet door locking device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a low-voltage distribution cabinet door locking device, aiming to solve the technical problem in the prior art that the cabinet door and the low-voltage distribution cabinet body are not locked tightly enough and are easily disturbed by dust, mosquitoes, etc.

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides a low-voltage distribution cabinet door lock device, which is applied to a low-voltage distribution cabinet body with a cabinet door hinged thereon, and includes a first operating rotary head, a second operating rotary head, a first lock shaft, a second lock shaft and a fixed block; the fixed block is fixed on the low-voltage distribution cabinet body, the first lock shaft passes through the fixed block, a lock tongue is fixed on one end of the first lock shaft facing the cabinet door, a first operating rotary head is rotatably mounted at a position corresponding to the lock tongue on the cabinet door, a lock cavity capable of accommodating the rotation of the lock tongue is provided inside the first operating rotary head, and a control connected to the lock cavity and capable of accommodating the passage of the lock tongue is provided on the back of the first operating rotary head; a sleeve block is provided at one end of the first lock shaft away from the lock tongue, the second lock shaft is fixed on one side of the sleeve block, and the second lock shaft and the first lock shaft are perpendicular to each other, the second operating rotary head is rotatably mounted on the cabinet door at a position aligned with the second lock shaft, a tightening cylinder is fixedly connected to one end of the second operating rotary head facing the low-voltage distribution cabinet body, the end face of the tightening cylinder has a spiral arc notch, and the end of the second lock shaft away from the sleeve block extends to the arc notch.

[0007] Furthermore, a shaft sleeve is rotatably sleeved on one end of the second lock shaft away from the sleeve block, and the outer circumferential surface of the shaft sleeve is in rolling contact with the arc-shaped notch.

[0008] Furthermore, a positioning groove is provided on the arc-shaped notch of the abutting cylinder at one end away from the second operating screw head.

[0009] Furthermore, the front sides of the first operating rotary head and the second operating rotary head are both provided with special-shaped holes.

[0010] Furthermore, one end of the first lock shaft away from the lock tongue movably passes through the fixed block and the sleeve block and is fixed with a baffle, and a spring is sleeved on the first lock shaft located between the baffle and the sleeve block.

[0011] Furthermore, the cross section of the first lock shaft is a rectangular structure.

[0012] Furthermore, a limiting plate is fixed on the side wall of the first lock shaft facing one end of the lock tongue.

[0013] Beneficial Effects

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model arranges the lock tongue and the first operating rotary head, the cabinet door is rotated to close, the first operating rotary head is aligned with the lock tongue, and the lock tongue passes through the control on the back of the first operating rotary head and is embedded in the lock cavity, and then a special tool is used to insert the special-shaped hole on the first operating rotary head and twist the first operating rotary head to rotate, so that the control and the lock tongue are misaligned, thereby preliminarily locking the cabinet door and the low-voltage distribution cabinet body, the structure is simple, and the operation is easy.

[0016] In the present invention, by providing the second operating rotary head and the second locking shaft, when the cabinet door is rotated to close, the arc-shaped notch on the end face of the abutting cylinder abuts against the shaft sleeve at the end face of the second locking shaft. On the basis of the preliminary locking of the cabinet door and the low-voltage distribution cabinet, a special tool is inserted into the special-shaped hole on the second operating rotary head and the second operating rotary head is twisted to rotate, so that the second operating rotary head drives the abutting cylinder to rotate, and the shaft sleeve will roll along the arc-shaped notch on the end face of the abutting cylinder. Since the arc-shaped notch is spiral, it will force the shaft sleeve to push the second locking shaft and the sleeve block away from the fixed block and When the cabinet door moves, the sleeve block pushes the spring and the baffle to drive the first lock shaft to move away from the cabinet door. The cabinet door is then continuously tightened toward the low-voltage distribution cabinet by utilizing the initial locking of the lock tongue and the first operating rotary head, thereby achieving a tight locking of the cabinet door and the low-voltage distribution cabinet, solving the problem that the cabinet door and the low-voltage distribution cabinet are not locked tightly enough and are easily disturbed by dust, mosquitoes, etc. In addition, the setting of the spring enables the first lock shaft to elastically tighten the cabinet door during the movement of the sleeve block, thereby avoiding damage to the lock tongue and the cabinet door caused by excessive tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the utility model applied to a low-voltage power distribution cabinet and a cabinet door;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the back structure of the first operating rotary head in the utility model;

[0021] Figure 4 It is a top view of the tightening cylinder in the utility model.

[0022] The markings in the attached drawings are: 1. low-voltage power distribution cabinet; 2. cabinet door; 3. first operating knob; 4. second operating knob; 5. first locking shaft; 6. second locking shaft; 7. special-shaped hole; 8. locking tongue; 9. baffle; 10. spring; 11. tightening cylinder; 12. bushing; 13. fixing block; 14. locking cavity; 15. control; 16. arc-shaped notch; 17. positioning groove; 18. sleeve block; 19. limit plate. DETAILED DESCRIPTION

[0023] 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.

[0024] This embodiment provides a low-voltage distribution cabinet door locking device, which is applied to a low-voltage distribution cabinet body 1 with a cabinet door 2 hingedly connected. Figure 1-Figure 4As shown, it includes a first operating rotary head 3, a second operating rotary head 4, a first locking shaft 5, a second locking shaft 6 and a fixed block 13. The fixed block 13 is fixed on the low-voltage power distribution cabinet 1, and the fixed block 13 is distributed perpendicular to the opening direction of the low-voltage power distribution cabinet 1. The first locking shaft 5 passes through the fixed block 13. A lock tongue 8 is fixed to one end of the first locking shaft 5 facing the cabinet door 2. The first operating rotary head 3 is rotatably installed at a position corresponding to the lock tongue 8 on the cabinet door 2. A lock cavity 14 capable of accommodating the rotation of the lock tongue 8 is provided inside the first operating rotary head 3. A control 15 connected to the lock cavity 14 and capable of accommodating the lock tongue 8 is provided on the back of the first operating rotary head 3. After the cabinet door 2 is rotated and closed, the first operating rotary head 3 will be aligned with the lock tongue 8, and the lock tongue 8 can be embedded in the lock cavity 14 through the control 15 on the back of the first operating rotary head 3. Then, the first operating rotary head 3 is twisted to rotate so that the control 15 and the lock tongue 8 are misaligned, thereby preliminarily locking the cabinet door 2 and the low-voltage power distribution cabinet 1. The locking method has a simple structure and is easy to operate.

[0025] In a further embodiment, a sleeve block 18 is provided at one end of the first lock shaft 5 away from the lock tongue 8, the second lock shaft 6 is fixed on one side of the sleeve block 18, and the second lock shaft 6 and the first lock shaft 5 are perpendicular to each other, the second operating rotary head 4 is rotatably installed on the cabinet door 2 at a position aligned with the second lock shaft 6, and the end of the second operating rotary head 4 facing the low-voltage power distribution cabinet 1 is fixedly connected with a tightening cylinder 11, and the end face of the tightening cylinder 11 has a spiral arc notch 16, and the end of the second lock shaft 6 away from the sleeve block 18 extends to the arc notch 16, and when the cabinet door 2 is rotated to close, the arc notch 16 on the end face of the tightening cylinder 11 is aligned with the end of the second lock shaft 6, 2 is initially locked with the low-voltage distribution cabinet body 1, the second operating knob 4 is turned to rotate, so that the second operating knob 4 drives the tightening cylinder 11 to rotate. At this time, the spiral arc notch 16 is used to force the second lock shaft 6 to push the sleeve block 18 away from the fixed block 13 and the cabinet door 2. During this process, the sleeve block 18 will drive the first lock shaft 5 to move away from the cabinet door 2. Thus, the cabinet door 2 is continuously tightened toward the low-voltage distribution cabinet body 1 by utilizing the initial locking of the lock tongue 8 and the first operating knob 3, so as to achieve a tight locking of the cabinet door 2 with the low-voltage distribution cabinet body 1, so as to solve the problem that the cabinet door 2 and the low-voltage distribution cabinet body 1 are not locked tightly enough and are easily disturbed by dust, mosquitoes, etc.

[0026] As a preferred implementation scheme of this embodiment, a sleeve 12 is rotatably sleeved on the end of the second lock shaft 6 away from the sleeve block 18, and the outer cylindrical surface of the sleeve 12 rolls and abuts against the arc-shaped notch 16. When the clamping tube 11 rotates, the sleeve 12 rolls along the arc-shaped notch 16, which is conducive to forcing the second lock shaft 6 to drive the sleeve block 18 to move. A positioning groove 17 is provided at the end of the arc-shaped notch 16 of the clamping tube 11 away from the second operating rotary head 4. When the cabinet door 2 is tightly locked with the low-voltage distribution cabinet body 1 by tightening the first lock shaft 5, the sleeve 12 is embedded in the positioning groove 17 for positioning, thereby ensuring that the low-voltage distribution cabinet body 1 and the cabinet door 2 will not loosen.

[0027] As a preferred implementation of this embodiment, the front sides of the first operating screw head 3 and the second operating screw head 4 are provided with special-shaped holes 7, and the first operating screw head 3 and the second operating screw head 4 can be rotated by using a tool that is compatible with the special-shaped holes 7. The end of the first lock shaft 5 away from the lock tongue 8 movably passes through the fixed block 13 and the sleeve block 18 and is fixed with a baffle 9. A spring 10 is sleeved on the first lock shaft 5 between the baffle 9 and the sleeve block 18. When the clamping cylinder 11 rotates, the sleeve 12 is forced to push the second lock shaft 6 and the sleeve block 18 away from the fixed block 13 and the cabinet door 2. During the movement of the sleeve block 18, the spring 10 and the baffle 9 are pushed to drive the first lock shaft 5 to move away from the cabinet door 2, thereby tightly locking the low-voltage distribution cabinet body 1 and the cabinet door 2. The setting of the spring 10 makes During the movement of the sleeve block 18, the first lock shaft 5 uses elastic tensioning on the cabinet door 2 to avoid damage to the lock tongue 8 and the cabinet door 2 caused by excessive tensioning. The cross-section of the first lock shaft 5 is a rectangular structure to prevent the first lock shaft 5 from rotating. A limiting plate 19 is fixed on the side wall of the first lock shaft 5 facing the lock tongue 8. The limiting plate 19 is used to limit the first lock shaft 5 to ensure that when the cabinet door 2 is closed, the lock tongue 8 can pass through the control 15 and be embedded in the lock cavity 14 for preliminary locking of the low-voltage distribution cabinet 1 and the cabinet door 2.

[0028] Working principle: When in use, the cabinet door 2 is rotated to close, the first operating rotary head 3 is aligned with the lock tongue 8, and the lock tongue 8 passes through the control 15 on the back of the first operating rotary head 3 and is embedded in the lock cavity 14, and then a special tool is used to insert the first operating rotary head 3 into the special-shaped hole 7 on the first operating rotary head 3 and twist the first operating rotary head 3 to rotate, so that the control 15 and the lock tongue 8 are misaligned, thereby preliminarily locking the cabinet door 2 and the low-voltage distribution cabinet body 1, and at the same time the cabinet door 2 is rotated to close, the arc-shaped notch 16 on the end face of the tightening tube 11 abuts against the shaft sleeve 12 at the end of the second lock shaft 6, and on the basis of the preliminary locking of the cabinet door 2 and the low-voltage distribution cabinet body 1, a special tool is used to insert the second operating rotary head 4 into the special-shaped hole 7 on the second operating rotary head 4 and twist the second operating rotary head 4 to rotate, so that the second operating rotary head 4 drives the tightening tube 11 to abut against the shaft sleeve 12 at the end of the second lock shaft 6. The cylinder 11 rotates, and the sleeve 12 will roll along the arc-shaped notch 16 against the end face of the cylinder 11. Since the arc-shaped notch 16 is spiral, the sleeve 12 will be forced to push the second lock shaft 6 and the sleeve block 18 away from the fixed block 13 and the cabinet door 2. During the movement of the sleeve block 18, the spring 10 and the baffle 9 are pushed to drive the first lock shaft 5 to move away from the cabinet door 2. The cabinet door 2 is continuously tightened toward the low-voltage distribution cabinet body 1 by utilizing the initial locking of the lock tongue 8 and the first operating rotary head 3, so as to achieve a tight locking of the cabinet door 2 and the low-voltage distribution cabinet body 1. In addition, the setting of the spring 10 enables the first lock shaft 5 to elastically tighten the cabinet door 2 during the movement of the sleeve block 18, thereby avoiding the phenomenon of damage to the lock tongue 8 and the cabinet door 2 caused by excessive tightening.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A low-voltage distribution cabinet door locking device, applied to a low-voltage distribution cabinet body (1) with a cabinet door (2) hingedly connected, comprising a first operating rotary head (3), a second operating rotary head (4), a first locking shaft (5), a second locking shaft (6) and a fixing block (13), characterized in that: The fixing block (13) is fixed on the low-voltage power distribution cabinet (1); the first lock shaft (5) passes through the fixing block (13); a lock tongue (8) is fixed to one end of the first lock shaft (5) facing the cabinet door (2); a first operating rotary head (3) is rotatably mounted at a position corresponding to the lock tongue (8) on the cabinet door (2); a lock cavity (14) capable of accommodating the lock tongue (8) to rotate is provided inside the first operating rotary head (3); and a control (15) communicating with the lock cavity (14) and capable of accommodating the lock tongue (8) to pass through is provided on the back of the first operating rotary head (3); A sleeve (18) is provided at one end of the first lock shaft (5) away from the lock tongue (8); the second lock shaft (6) is fixed on one side of the sleeve (18); the second lock shaft (6) and the first lock shaft (5) are perpendicular to each other; the second operating rotary head (4) is rotatably mounted on the cabinet door (2) at a position aligned with the second lock shaft (6); one end of the second operating rotary head (4) facing the low-voltage power distribution cabinet (1) is fixedly connected to a tightening cylinder (11); the end surface of the tightening cylinder (11) has a spiral arc-shaped notch (16); and the end of the second lock shaft (6) away from the sleeve (18) extends to the arc-shaped notch (16).

2. A low-voltage distribution cabinet door locking device according to claim 1, characterized in that: The end of the second locking shaft (6) away from the sleeve block (18) is rotatably sleeved with a shaft sleeve (12), and the outer circumferential surface of the shaft sleeve (12) is in rolling contact with the arc-shaped notch (16).

3. A low-voltage distribution cabinet door locking device according to claim 2, characterized in that: A positioning groove (17) is provided at one end of the arc-shaped notch (16) of the abutting cylinder (11) away from the second operating rotary head (4).

4. A low-voltage distribution cabinet door locking device according to claim 1, characterized in that: The front sides of the first operating rotary head (3) and the second operating rotary head (4) are both provided with special-shaped holes (7).

5. A low-voltage distribution cabinet door locking device according to claim 1, characterized in that: One end of the first lock shaft (5) away from the lock tongue (8) movably passes through the fixed block (13) and the sleeve block (18) and is fixed with a baffle (9); a spring (10) is sleeved on the first lock shaft (5) located between the baffle (9) and the sleeve block (18).

6. A low-voltage distribution cabinet door locking device according to claim 5, characterized in that: The first locking shaft (5) has a rectangular cross-section.

7. A low-voltage distribution cabinet door locking device according to claim 5, characterized in that: A limiting plate (19) is fixed on the side wall of the first lock shaft (5) at one end facing the lock tongue (8).

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