Automatic turn-off transformer

Abstract

The transformer comprises a protective shell, a protective cavity with an opening in the front side is formed in the protective shell, a detachable transformer body is fixedly arranged on the lower end wall of the protective cavity, the transformer body can conduct voltage transformation work, a motor is fixedly arranged on the upper end wall of the protective cavity, and the motor is in power connection with a motor shaft; the motor shaft is fixedly connected with a connecting ring, the connecting ring is fixedly connected with a connecting rod, the connecting rod is fixedly connected with a shielding plate, the shielding plate is slidably connected to the inner wall of the protection cavity, the size of the shielding plate is larger than that of a front opening of the protection cavity, the front opening of the protection cavity can be shielded through the shielding plate, and then the transformer body is protected. By arranging a pressing block, a sliding block, a reset spring and a control switch, under the condition of non-staff operation, the control switch is not in contact with the sliding block, then the shielding plate is controlled to be maintained in the shielding protection cavity, and then it is guaranteed that the situation that the transformer body is exposed to the outside due to negligence of staff, and consequently safety risks are caused is avoided.

Description

Technical Field

[0001] The utility model relates to the field of an automatic shut-off transformer, in particular to an automatic shut-off transformer. Background Art

[0002] Transformers are usually protected by casings. During maintenance or inspection, the casing needs to be opened so that the transformer body can be worked on. However, when the staff fails to close the casing after completing their work or the casing is blown open by the wind in windy weather, the open or half-closed casing cannot prevent dirt and small animals from entering, causing safety hazards to the transformer. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic shutdown transformer to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical solutions: an automatic shut-off transformer, comprising a protective shell, a protective cavity with a front opening provided inside the protective shell, a detachable transformer body fixedly provided on the lower end wall of the protective cavity, the transformer body capable of performing voltage transformation, a motor fixedly provided on the upper end wall of the protective cavity, the motor power being connected to a motor shaft;

[0005] The motor shaft is fixedly connected to a connecting ring, the connecting ring is fixedly connected to a connecting rod, the connecting rod is fixedly connected to a shielding plate, the shielding plate is slidably connected to the inner wall of the protection cavity, the size of the shielding plate is larger than the size of the front opening of the protection cavity, the front opening of the protection cavity can be blocked by the shielding plate, thereby protecting the transformer body.

[0006] The outer end wall of the protection shell is fixedly connected with a control block located at the front side of the protection cavity opening.

[0007] A control cavity is arranged in the control block, and a slider is slidably connected in the control cavity.

[0008] A plurality of return springs are fixedly arranged on the sliding block and the lower end wall of the control cavity.

[0009] A control switch electrically connected to the motor is fixedly provided on the lower end wall of the control cavity. When the control switch is pressed, the slider is activated to drive the motor shaft to rotate half a circle. When the control switch is reset, the slider is activated to reset the motor shaft, thereby realizing the shielding and opening of the baffle.

[0010] The side wall of the protection cavity is provided with a plurality of vents for exchanging air.

[0011] The side wall of the protection cavity is provided with a plurality of connection holes for connecting cables.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model is provided with a motor, a motor shaft, a connecting ring, a connecting rod and a shielding plate, and the shielding plate can be driven by the motor to rotate, and then the inside of the protective cavity can be shielded or opened by the shielding plate, so as to protect the transformer body and facilitate the operation during maintenance and inspection;

[0014] By setting the pressure block, slider, return spring and control switch, the control switch can be controlled to prevent the slider from touching it when not operated by staff, thereby controlling the shielding plate to remain inside the shielding protection cavity, thereby ensuring that the transformer body is not exposed to the outside world due to negligence of staff, causing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An overall three-dimensional schematic diagram of an automatic shutdown transformer proposed for the utility model;

[0016] Figure 2 A three-dimensional schematic diagram of a right view of an automatic shut-off transformer proposed in the utility model;

[0017] Figure 3 A schematic diagram of the internal structure of an automatic shutdown transformer proposed for the utility model;

[0018] Figure 4 for Figure 3 Right view of;

[0019] Figure 5 for Figure 3 An enlarged schematic diagram of the middle control block;

[0020] Figure 6 for Figure 5 Right view of;

[0021] In the figure: 101, protective shell; 102, protective cavity; 103, transformer body; 104, vent; 105, motor; 106, motor shaft; 107, connecting ring; 108, connecting rod; 109, shielding plate; 111, control block; 112, control cavity; 113, control switch; 114, return spring; 115, slider; 116, pressure block. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] See also Figure 1-6 The utility model provides a technical solution: an automatic shut-off transformer, comprising a protective shell 101, a protective cavity 102 with a front opening is provided in the protective shell 101, a detachable transformer body 103 is fixedly provided on the lower end wall of the protective cavity 102, the transformer body 103 can perform voltage transformation, a motor 105 is fixedly provided on the upper end wall of the protective cavity 102, and the motor 105 is connected to a motor shaft 106;

[0025] The motor shaft 106 is fixedly connected to a connecting ring 107, the connecting ring 107 is fixedly connected to a connecting rod 108, the connecting rod 108 is fixedly connected to a baffle plate 109, the baffle plate 109 is slidably connected to the inner wall of the protection cavity 102, the size of the baffle plate 109 is larger than the size of the front opening of the protection cavity 102, and the front opening of the protection cavity 102 can be blocked by the baffle plate 109, thereby protecting the transformer body 103.

[0026] The outer end wall of the protection shell 101 is fixedly connected with a control block 111 located at the front side of the opening of the protection cavity 102 .

[0027] A control cavity 112 is disposed in the control block 111 , and a slider 115 is slidably connected in the control cavity 112 .

[0028] A plurality of return springs 114 are fixedly disposed between the slider 115 and the lower end wall of the control chamber 112 .

[0029] A control switch 113 electrically connected to the motor 105 is fixedly provided on the lower end wall of the control chamber 112. When the control switch 113 is pressed, the motor 105 is started to drive the motor shaft 106 to rotate half a circle. When the control switch 113 is reset, the motor 105 is started to drive the motor shaft 106 to reset, thereby realizing the shielding and opening of the baffle 109.

[0030] The side wall of the protection cavity 102 is provided with a plurality of vent holes 104 for exchanging air.

[0031] The side wall of the protection cavity 102 is provided with a plurality of connection holes for connecting cables.

[0032] Working principle:

[0033] When in use, the transformer body 103 is installed on the lower end wall of the protection cavity 102, and then the protection shell 101 is installed in the use position, and the cable is connected to the transformer body 103, so that the voltage transformation work can be carried out normally;

[0034] When performing maintenance work, the worker approaches the shielding plate 109 and presses the pressing block 116 manually or with a tool, thereby driving the slider 115 to move downward and compress the return spring 114. At this time, the slider 115 contacts the control switch 113, and the motor 105 is started to drive the motor shaft 106 to rotate half a circle, thereby driving the connecting ring 107, the connecting rod 108 and the shielding plate 109 to rotate half a circle around the motor shaft 106, so as to facilitate the worker to perform maintenance;

[0035] After the work is completed, the pressure block 116 is no longer pressed, and the slider 115 and the pressure block 116 move upward and reset under the elastic force of the reset spring 114. At this time, the slider 115 no longer contacts the control switch 113, and the motor 105 starts to drive the motor shaft 106 to rotate in the opposite direction and reset, thereby driving the baffle plate 109 to reset and continue to shield the protection cavity 102 to protect the transformer body 103.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic shut-off transformer, comprising a protective shell (101), characterized in that: A protective cavity (102) with a front opening is provided in the protective shell (101); a detachable transformer body (103) is fixedly provided on the lower end wall of the protective cavity (102); a motor (105) is fixedly provided on the upper end wall of the protective cavity (102); and the motor (105) is dynamically connected to a motor shaft (106); The motor shaft (106) is fixedly connected to a connecting ring (107), the connecting ring (107) is fixedly connected to a connecting rod (108), the connecting rod (108) is fixedly connected to a shielding plate (109), the shielding plate (109) is slidably connected to the inner wall of the protective cavity (102), and the size of the shielding plate (109) is larger than the size of the front opening of the protective cavity (102).

2. An automatic shutdown transformer according to claim 1, characterized in that: The outer end wall of the protective shell (101) is fixedly connected to a control block (111) located at the front side of the opening of the protective cavity (102).

3. An automatic shutdown transformer according to claim 2, characterized in that: A control cavity (112) is provided in the control block (111), and a slider (115) is slidably connected in the control cavity (112).

4. An automatic shutdown transformer according to claim 3, characterized in that: A plurality of return springs (114) are fixedly disposed between the slider (115) and the lower end wall of the control chamber (112).

5. An automatic shutdown transformer according to claim 4, characterized in that: A control switch (113) electrically connected to the motor (105) is fixedly provided on the lower end wall of the control chamber (112).

6. An automatic shutdown transformer according to claim 5, characterized in that: The side wall of the protection cavity (102) is provided with a plurality of ventilation holes (104).

7. An automatic shut-off transformer according to claim 6, characterized in that: The side wall of the protection cavity (102) is provided with a plurality of connection holes for connecting cables.

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