Protective structure of load switch operating handle and box-type transformer
By designing protective measures for protective covers and locking parts on the load switch operating handle, the problem of misoperation of non-professional personnel is solved and the operation safety of box transformers is improved.
Patent Information
- Application Number
- CN202422169297.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing box-type transformer load switch operating handles do not have anti-dust protection measures, which are easily misoperated by non-professional personnel, resulting in equipment damage or safety accidents.
A protective structure for load switch operating handle is designed, including a protective cover and a locking member. Through the design of cross-through holes and locking members, the operating handle is prevented from misoperating, and the protection of anti-dust protection measures are added.
Effectively prevent the operating handle from being misoperated, improve the operating safety of the box transformer, and avoid equipment damage and safety accidents.
Smart Images
Figure CN223079000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of load switches of box-type transformers, and particularly relates to a protection structure for an operating handle of a load switch and a box-type transformer. Background Art
[0002] In a box-type transformer, a load switch is mainly used to control the load of the box-type transformer, realize the switching operation of the load in the circuit, and can connect or disconnect the load in the circuit without interrupting the power supply to meet the operation requirements of the box-type transformer under different working conditions. The safety of the load switch directly affects the stable operation of the entire power system. The existing load switch is usually operated by a handle or a button, and the action of the switch is realized through mechanical connection and contacts. When the load switch is in the off state and not connected to the external power grid, the current cannot pass through the load switch and the load will not be powered by the power supply; when the load switch is in the on state and connected to the external power grid, the current can flow through the load switch and the load can work normally.
[0003] However, at present, the operating handle of the load switch of the existing box-type transformer is placed outside the box body of the box-type transformer, and no anti-fool protection measures are set. Non-professionals are easy to contact and directly operate the operating handle, there is a risk of misoperation, and equipment damage or safety accidents may occur. Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model
[0004] The main purpose of the utility model is to provide a protection structure for an operating handle of a load switch, which adds anti-fool protection measures, can prevent the operating handle from being misoperated, improves the operation safety of the box-type transformer, and solves the problems of damage to the box-type transformer or safety accidents caused by misoperation of the operating handle.
[0005] Another purpose of the utility model is to provide a box-type transformer using the protection structure for the operating handle of the load switch. Anti-fool protection measures are added to the operating handle of the load switch provided on the box-type transformer, the operation safety of the box-type transformer is improved, and the problems of damage to the box-type transformer or safety accidents caused by misoperation of the operating handle are solved.
[0006] To achieve the above object, a protective structure for the operating handle of a load switch proposed by the present utility model is applied to a box-type transformer. The box-type transformer includes a box body and a load switch. The load switch includes a switch body, an operating handle, and a rotating shaft. The switch body is arranged inside the box body. One end of the rotating shaft is rotatably connected to the switch body, and the other end of the rotating shaft penetrates through the side wall of the box body and is fixedly connected to the operating handle. An operating ring is provided at one end of the operating handle away from the switch body. The protective structure for the operating handle of the load switch includes a protective cover and a locking member. The protective cover includes a protective cover body. One end of the protective cover body is hinged to the outer side wall of the box body, and the other end of the protective cover body is rotatably covered to the front end of the operating handle. An accommodating cavity for accommodating the operating handle is formed inside the protective cover body. The protective cover body is also provided with a cross through hole, and the cross through hole is communicated with the accommodating cavity. The end of the operating ring away from the box body extends out of the cross through hole. When the operating ring extends out of the cross through hole, the operating ring is limited inside the cross through hole and cannot rotate and is in a horizontal state or a vertical state. One end of the operating ring extending out of the cross through hole is detachably connected to the locking member.
[0007] Optionally, the cross through hole is formed by overlapping a horizontally arranged horizontal through hole and a vertically arranged vertical through hole. The width of the horizontal through hole is the same as the width of the vertical through hole, the length of the horizontal through hole is the same as the length of the vertical through hole, and the overlapping part of the horizontal through hole and the vertical through hole forms a square center hole. The outer diameter width of the operating ring is greater than the width of the center hole, and the outer diameter width of the operating ring is less than the length of the horizontal through hole.
[0008] Optionally, the protective cover body includes a first side plate, a panel, and a second side plate. The first side plate is hinged to the box body and is perpendicular to the box body. One end of the panel is fixedly connected to the end of the first side plate away from the box body, and the other end of the panel is fixedly connected to the second side plate. The cross through hole is opened on the panel. The panel is arranged parallel to the box body, the second side plate is arranged parallel to the first side plate, and the second side plate and the first side plate are located on the same side of the panel.
[0009] Optionally, the protective cover body further includes a top plate and a bottom plate; the top plate is disposed between the box body and the panel, and the top plate is connected to the top ends of the panel and the first side plate, and one end of the top plate abuts against the side wall of the box body; the bottom plate is disposed between the box body and the panel, and the bottom plate is connected to the bottom ends of the panel and the first side plate, and one end of the bottom plate abuts against the side wall of the box body; the first side plate, the panel, the second side plate, the top plate and the bottom plate enclose to form the accommodation cavity.
[0010] Optionally, the bottom plate is provided with a lead through hole, and the lead through hole communicates with the accommodation cavity.
[0011] Optionally, the lead through hole is open at a position where the bottom plate is close to the box body, and the lead through hole is arched.
[0012] Optionally, an extension portion is provided at one end of the bottom plate away from the first side plate, the extension portion horizontally extends to the outside of the second side plate, and a first mounting hole is provided in the extension portion; a fixing piece is further provided on the outer side wall of the box body, and the fixing piece is located in the height direction of the extension portion, and a second mounting hole corresponding to the first mounting hole is provided in the fixing piece, and the first mounting hole and the second mounting hole are fixedly connected by bolts.
[0013] Optionally, an observation port is provided between the second side plate and the box body, and the observation port communicates with the accommodation cavity.
[0014] Optionally, the locking member is a padlock.
[0015] The present utility model further provides a box-type transformer, which includes a box body, a load switch and a protective structure of the load switch operating handle as described in any one of the above.
[0016] Compared with the prior art, the present utility model has the following beneficial effects:
[0017] 1. By opening the cross through hole in the protective cover body, the end of the operating ring away from the box body extends out of the cross through hole, so as to lock the operating ring at one of the working state positions of the load switch, which can effectively avoid the occurrence of misoperation of the operating handle. At the same time, by detachably connecting the convex side of the operating ring protruding from the cross through hole with the locking piece, the locking piece locks the operating ring and the protective cover body in the locked state. When it is necessary to change the state of the load switch, the locking piece must be detached from the operating ring first, and then the protective cover body can be opened, and then the operating handle can be operated. This protection structure adds an anti-fool protection measure, which can prevent the operating handle from being misoperated, improve the operation safety of the box-type transformer, and solve the problem of damage or safety accidents of the box-type transformer caused by misoperation of the operating handle.
[0018] 2. When the operating handle rotates to the next working state position, the protective cover body can be immediately closed to lock the operating ring, so as to avoid misoperation of the operating ring during the operation process and cause safety accidents.
[0019] 3. Through the fixed installation between the extending part of the bottom plate and the fixing piece of the box body, the fixed installation of the protective cover body and the box body is realized, which can avoid damage to the protective cover body due to shaking during transportation and improve stability.
[0020] 4. When it is necessary to trigger or change the state of the load switch, the bolt needs to be removed first, and then the locking piece needs to be detached from the operating ring, and then the protective cover body can be opened, and then the operating handle can be operated, which further strengthens the protection of the anti-fool protection measure, effectively prevents the operating handle from being misoperated, and improves the operation safety of the box-type transformer. Description of the Drawings
[0021] Figure 1 Schematic diagram of a usage state of the protection structure of the operating handle of the load switch according to an embodiment of the present invention (local view of a two-position load switch);
[0022] Figure 2 Schematic diagram of a usage state of the protection structure of the operating handle of the load switch according to an embodiment of the present invention (local view of a two-position load switch);
[0023] Figure 3 Schematic diagram of another usage state of the protection structure of the operating handle of the load switch according to an embodiment of the present invention (local view of a two-position load switch);
[0024] Figure 4Schematic diagram (for a two-position load switch) of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model and the structure of the load switch;
[0025] Figure 5 Front view of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model and the load switch;
[0026] Figure 6 Left view of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model and the load switch;
[0027] Figure 7 Explosion diagram of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model and the load switch;
[0028] Figure 8 Schematic diagram of the protective cover body of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model;
[0029] Figure 9 Schematic diagram of the protective cover body of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model;
[0030] Figure 10 Front view of the protective cover body of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model;
[0031] Figure 11 Schematic diagram of the use state (partial view for a four-position load switch) of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model;
[0032] Figure 12 Schematic diagram (for a four-position load switch) of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model;
[0033] Figure 13 Explosion diagram (for a four-position load switch) of the protective structure of the operating handle of a load switch according to an embodiment of the present utility model.
[0034] Explanation of the reference numerals in the attached drawings: box body 1, fixing piece 11, second mounting hole 111, bolt 12, hinge member 13, load switch 2, switch body 21, operating handle 22, fixing part 221, operating ring 222, indicating ear 223, rotating shaft 23, travel switch mounting plate 24, protective cover 3, protective cover body 31, cross through hole 33, horizontal through hole 331, vertical through hole 332, central hole 333, first side plate 311, panel 312, second side plate 313, top plate 314, bottom plate 315, lead through hole 3151, extension part 3152, first mounting hole 31521, observation port 316, accommodating cavity 32, locking member 4. Detailed implementation manners
[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, may also be a fixed connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0038] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0039] Refer to Figures 1 to 10In order to solve the above technical problems, the utility model proposes a protective structure of a load switch operating handle, which is applied to a box-type transformer. The box-type transformer includes a box body 1 and a load switch 2. The load switch 2 includes a switch body 21, an operating handle 22 and a rotating shaft 23; the switch body 21 is arranged inside the box body 1, one end of the rotating shaft 23 is rotatably connected to the switch body 21, and the other end of the rotating shaft 23 passes through the side wall of the box body 1 and is fixedly connected to the operating handle 22; an operating ring 222 is provided at one end of the operating handle 22 away from the switch body 21; the protective structure of the load switch operating handle includes a protective cover 3 and a locking member 4, the protective cover 3 includes a protective cover body 31, and the protective cover body One end of the protective cover body 31 is hinged to the outer side wall of the box body 1, and the other end of the protective cover body 31 is rotated to cover the front end of the operating handle 22, and the protective cover body 31 is internally formed with a accommodating cavity 32 for accommodating the operating handle 22; the protective cover body 31 is also provided with a cross through hole 33, and the cross through hole 33 is communicated with the accommodating cavity 32, and the end of the operating ring 222 away from the box body 1 extends out of the cross through hole 33, and when the operating ring 222 extends out of the cross through hole 33, the operating ring 222 is limited inside the cross through hole 33 and cannot rotate and is in a horizontal state or a vertical state; one end of the operating ring 222 extending out of the cross through hole 33 is detachably connected to the locking member 4.
[0040] The load switch 2 can trigger or change the state of the load switch 2 by rotating the operating handle 22 to different positions, so as to connect or disconnect the load in the circuit, thereby realizing the switching operation of the load in the circuit. The utility model provides the cross hole 33 in the protective cover body 31, and the operating ring 222 extends out of the cross hole 33 at the end away from the box body 1, and the outer diameter of the operating ring 222 is greater than the width of the cross hole 33 and less than the length of the cross hole 33. At this time, the protective cover body 31 and the operating ring 222 are in a locked state. When the protective cover body 31 covers the front end of the operating handle 22, the operating ring 222 can be locked to prevent the operating ring 222 from rotating significantly.
[0041] It should be noted that the position of the cross through hole 33 matches the position where the operating handle 22 can trigger or change the working state of the load switch 2. That is, when the protective cover body 31 and the operating ring 222 are in the locked state, the operating handle 22 is in one of the working state positions of the load switch 2, and the operating handle 22 cannot be rotated to the other working state position of the load switch 2. During use, when the operating handle 22 needs to be rotated to the next working state position, the protective cover body 31 needs to be opened first to rotate the operating handle 22 to the next working state position, and then the protective cover body 31 can be immediately closed to lock the operating ring 222, which can avoid accidental operation of the operating ring 222 during the operation process and cause safety accidents.
[0042] By detachably connecting the locking member 4 to the side of the operating ring 222 protruding from the cross through hole 33, the locking member 4 locks the operating ring 222 and the protective cover body 31 in the locked state, so that when it is necessary to change the state of the load switch 2, the locking member 4 must be detached from the operating ring 222 first to open the protective cover body 31, and then the operating handle 22 can be operated. The utility model improves the operation safety of the box-type transformer by adding an anti-fool protection measure to prevent the operating handle 22 from being accidentally operated, and solves the problems of damage to the box-type transformer or occurrence of safety accidents caused by accidentally operating the operating handle 22.
[0043] Specifically, a through port is provided on the side wall of the box body 1 for the rotation shaft 23 to pass through;
[0044] Specifically, it should be noted that the utility model can be applied to the two-position load switch 2 (refer to Figures 1 to 10 ) or the four-position load switch 2 (refer to Figures 11 to 13 ) by changing the specification size of the protective cover body 31. By rotating the operating handle 22 to different positions, the state of the load switch 2 is triggered or changed to connect or disconnect the load in the circuit, so as to realize the switching operation of the load in the circuit. For example, please refer to Figures 1 to 3 shown, where Figure 3 is a state schematic diagram when the operating handle 22 rotates to another working state position. The load switch 2 is a two-position load switch 2. When the load switch 2 is in the "open" state, the load switch 2 is in the off state, the box-type transformer is not connected to the external power grid, the current cannot pass through the load switch 2, and the load will not be powered by the power supply; when the load switch 2 is in the "closed" state, the load switch 2 is in the closed state, the box-type transformer is connected to the external power grid, the current can flow through the load switch 2, and the load can work normally.
[0045] Specifically and optionally, one end of the protective cover body 31 is hinged to the outer side wall of the box body 1 through a hinge member 13, and the hinge member 13 can be a hinge, a hinge leaf or other structures.
[0046] Refer to Figure 4 and Figure 10 For further illustration, the cross through hole 33 is formed by overlapping a horizontally arranged horizontal through hole 331 and a vertically arranged vertical through hole 332. The width of the horizontal through hole 331 is the same as the width of the vertical through hole 332, and the length of the horizontal through hole 331 is the same as the length of the vertical through hole 332. The overlapping part of the horizontal through hole 331 and the vertical through hole 332 forms a square central hole 333. The outer diameter width of the operation ring 222 is greater than the width of the central hole 333, and the outer diameter width of the operation ring 222 is less than the length of the horizontal through hole 331.
[0047] By setting the outer diameter width of the operation ring 222 to be greater than the width of the central hole 333 and less than the length of the horizontal through hole 331, the operation ring 222 can smoothly extend out of the cross through hole 33, and the operation ring 222 can be limited inside the cross through hole 33 and cannot be rotated to another working state position.
[0048] For further illustration, the operation handle 22 includes a fixing part 221, an indicating ear 223 and the operation ring 222. One end of the fixing part 221 is fixedly connected to the end of the rotating shaft 23 away from the box body 1, and the other end of the fixing part 221 is fixedly connected to the operation ring 222. The indicating ear 223 is arranged in the accommodating cavity 32 to indicate the current position or state of the load switch 2, so that the operator can quickly judge the state of the load switch 2 according to the position of the indicating ear 223 and perform corresponding operations or maintenance. By arranging the indicating ear 223 in the accommodating cavity 32, it can effectively avoid accidental contact by personnel, reduce the risk of electric shock or electric arc, and improve the operation safety of the box-type transformer.
[0049] As Figure 7 shown, specifically and optionally, when the load switch 2 is a two-position load switch 2, the indicating ear 223 is fixedly connected to the operation ring 222.
[0050] As Figure 13 shown, specifically and optionally, when the load switch 2 is a four-position load switch 2, the indicating ear 223 is fixedly connected to the fixing part 221.
[0051] Refer to Figures 8 to 9, Further explanation, the protective cover body 31 includes a first side plate 311, a panel 312 and a second side plate 313; the first side plate 311 is hinged to the box body 1, and the first side plate 311 is perpendicular to the box body 1; one end of the panel 312 is fixedly connected to the end of the first side plate 311 away from the box body 1, and the other end of the panel 312 is fixedly connected to the second side plate 313; the cross through hole 33 is opened on the panel 312; and the panel 312 is arranged parallel to the box body 1, the second side plate 313 is arranged parallel to the first side plate 311, and the second side plate 313 and the first side plate 311 are located on the same side of the panel 312.
[0052] By setting that the protective cover body 31 includes the first side plate 311, the panel 312 and the second side plate 313, and the panel 312 is arranged parallel to the box body 1, and the cross through hole 33 is opened on the panel 312, the distance between the operation ring 222 and the cross through hole 33 can be made shorter, the space can be fully utilized, and the layout of the protective cover body 31 and the box body 1 can be made more compact.
[0053] Refer to Figures 8 to 9 , Further explanation, the protective cover body 31 further includes a top plate 314 and a bottom plate 315; the top plate 314 is arranged between the box body 1 and the panel 312, and the top plate 314 is connected to the tops of the panel 312 and the first side plate 311, and one end of the top plate 314 abuts against the side wall of the box body 1; the bottom plate 315 is arranged between the box body 1 and the panel 312, and the bottom plate 315 is connected to the bottoms of the panel 312 and the first side plate 311, and one end of the bottom plate 315 abuts against the side wall of the box body 1; the first side plate 311, the panel 312, the second side plate 313, the top plate 314 and the bottom plate 315 enclose to form the accommodation cavity 32.
[0054] By setting the top plate 314 and the bottom plate 315, all-round protection is provided for the operation handle 22, effectively reducing the entry of substances such as dust and rainwater from the outside into the inside of the protective cover body 31, and preventing the operation handle 22 from being corroded by dust and rainwater.
[0055] Refer to Figure 9 , Further explanation, the bottom plate 315 is provided with a lead through hole 3151, and the lead through hole 3151 is communicated with the accommodation cavity 32.
[0056] By providing the lead through hole 3151 in the bottom plate 315 for connecting the signal wire led out by the load switch 2, it helps to manage and arrange the signal wire, and the lead through hole 3151 can also play a role in enhancing the heat dissipation performance. Specifically, optionally, the lead through hole 3151 can be set as circular, arched, or square.
[0057] Refer to Figure 9 , for further illustration, the lead through hole 3151 is open at the position where the bottom plate 315 is close to the box body 1, and the lead through hole 3151 is arched.
[0058] By providing the lead through hole 3151 open at the position where the bottom plate 315 is close to the box body 1, it can reduce the bending of the signal wire when connecting the signal lead; at the same time, since the lead through hole 3151 is arched, it can better adapt to signal leads of different shapes and sizes, ensuring that the signal lead can smoothly pass through the lead through hole 3151 and is not easily damaged.
[0059] Refer to Figure 1 , Figures 7 to 9 , for further illustration, one end of the bottom plate 315 away from the first side plate 311 is provided with an extension 3152, the extension 3152 extends horizontally to the outside of the second side plate 313, and the extension 3152 is provided with a first mounting hole 31521; a fixing piece 11 is further provided on the outer side wall of the box body 1, and the fixing piece 11 is located in the height direction of the extension 3152, and the fixing piece 11 is provided with a second mounting hole 111 corresponding to the first mounting hole 31521, and the first mounting hole 31521 and the second mounting hole 111 are fixedly connected by a bolt 12.
[0060] By providing the extension 3152 on the bottom plate 315 and the fixing piece 11 on the outer side wall of the box body 1, and passing the bolt 12 through the first mounting hole 31521 and the second mounting hole 111 to fixedly connect the extension 3152 and the fixing piece 11, the fixed installation of the protective cover body 31 and the box body 1 is realized, which can prevent the protective cover body 31 from being damaged due to shaking during transportation and improve the stability. Specifically, the bolt 12 is an M10×20 hexagon bolt 12.
[0061] When it is necessary to trigger or change the state of the load switch 2, the bolt 12 needs to be removed first, and then the locking member 4 needs to be disassembled from the operation ring 222. Only then can the protective cover body 31 be opened, and further, the operation handle 22 can be operated, effectively preventing the operation handle 22 from being misoperated, improving the operation safety of the box-type transformer, and solving the problem of damage to the box-type transformer or occurrence of safety accidents caused by misoperation of the operation handle 22.
[0062] Refer to Figures 6 to 9 Furthermore, an observation port 316 is provided between the second side plate 313 and the box body 1, and the observation port 316 communicates with the accommodation cavity 32.
[0063] By providing the observation port 316, it is convenient to observe the situation inside the protective cover body 31, and observe the current position of the operation handle 22 from the observation port 316 to determine the working state of the current load switch 2.
[0064] Furthermore, the load switch 2 further includes a travel switch mounting plate 24 for mounting a travel switch; the travel switch mounting plate 24 is arranged between the operation handle 22 and the box body 1, and the travel switch mounting plate 24 is provided with a through hole for the rotation shaft 23 to pass through. The position of the travel switch mounting plate 24 matches the position of the cross through hole 33 to ensure that the travel switch can be installed on the movement path of the operation handle 22, so that the operation handle 22 will trigger the travel switch during movement, thereby changing the state of the travel switch and triggering or changing the state of the load switch 2. Since the position of the travel switch mounting plate 24 is adapted to the cross through hole 33, it can be ensured that when the operation handle 22 and the protective cover body 31 are in a locked state, the operation handle 22 can trigger the travel switch.
[0065] Such as Figure 7 shown, specifically optionally, when the load switch 2 is a two-position load switch 2, the travel switch mounting plate 24 can be set in an L shape.
[0066] Such as Figure 13 shown, specifically optionally, when the load switch 2 is a four-position load switch 2, the travel switch mounting plate 24 can be set in a cross shape.
[0067] Specifically optionally, a part of the travel switch mounting plate 24 extends out of the observation port 316, which helps the operator intuitively observe the position of the travel switch and can reduce the size of the protective cover body 31 and lower the production cost.
[0068] Refer toFigure 1 , further explained, the locking member 4 is a padlock.
[0069] By setting the locking member 4 as a padlock, the padlock is convenient to be locked with the operating ring 222. Specifically, the padlock can be set to a key type or a password type, wherein the key or unlocking password of the padlock can be kept by a professional operator, which can further prevent non-professional operators from arbitrarily operating the operating handle 22, avoid potential safety hazards, and enhance the on-site power management problem, that is, whether it is powered on or off with the power grid, it must be operated by a professional operator.
[0070] See also Figures 1 to 3 The utility model also provides a box-type transformer, comprising a box body 1, a load switch 2 and a protective structure of the load switch operating handle described in any one of the above items.
[0071] Since the operating handle 22 of the load switch 2 is arranged on the outside of the box body 1, a fool-proof protection measure is added by setting a protective structure of the load switch operating handle, which can prevent the operating handle 22 from being operated incorrectly, effectively improve the operating safety of the box-type transformer, and solve the problem of damage to the box-type transformer or safety accidents caused by incorrect operation of the operating handle 22.
[0072] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.
Claims
1. A protective structure for the operating handle of a load switch, which is applied to a box-type transformer. The box-type transformer includes a box body and a load switch, and is characterized in that, The load switch includes a switch body, an operating handle, and a rotating shaft; the switch body is arranged inside the box body, one end of the rotating shaft is rotatably connected to the switch body, and the other end of the rotating shaft penetrates through the side wall of the box body and is fixedly connected to the operating handle; an operating ring is provided at one end of the operating handle away from the switch body; The protective structure of the operating handle of the load switch includes a protective cover and a locking member. The protective cover includes a protective cover body. One end of the protective cover body is hinged to the outer side wall of the box body, and the other end of the protective cover body is rotatably covered to the front end of the operating handle. An accommodation cavity for accommodating the operating handle is formed inside the protective cover body; a cross through hole is also provided on the protective cover body, and the cross through hole communicates with the accommodation cavity. The end of the operating ring away from the box body extends out of the cross through hole. When the operating ring extends out of the cross through hole, the operating ring is limited inside the cross through hole and cannot rotate and is in a horizontal state or a vertical state; One end of the operating ring extending out of the cross through hole is detachably connected to the locking member.
2. The protective structure of the load switch operating handle according to claim 1, wherein The cross through hole is formed by overlapping a horizontally arranged horizontal through hole and a vertically arranged vertical through hole. The width of the horizontal through hole is the same as the width of the vertical through hole, the length of the horizontal through hole is the same as the length of the vertical through hole, and the overlapping part of the horizontal through hole and the vertical through hole forms a square center hole; The outer diameter width of the operating ring is greater than the width of the center hole, and the outer diameter width of the operating ring is less than the length of the horizontal through hole.
3. The protective structure of the operating handle of the load switch according to claim 1, wherein, The protective cover body includes a first side plate, a panel, and a second side plate; The first side plate is hinged to the box body and is perpendicular to the box body; One end of the panel is fixedly connected to the end of the first side plate away from the box body, and the other end of the panel is fixedly connected to the second side plate; The cross through hole is provided on the panel; and the panel is arranged parallel to the box body, the second side plate is arranged parallel to the first side plate, and the second side plate and the first side plate are on the same side of the panel.
4. The protective structure of the operating handle of the load switch according to claim 3, wherein, The protective cover body further includes a top plate and a bottom plate; The top plate is arranged between the box body and the panel, and the top plate is connected to the top ends of the panel and the first side plate. One end of the top plate abuts against the side wall of the box body; The bottom plate is arranged between the box body and the panel, and the bottom plate is connected to the bottom ends of the panel and the first side plate. One end of the bottom plate abuts against the side wall of the box body; The first side plate, the panel, the second side plate, the top plate, and the bottom plate enclose to form the accommodation cavity.
5. The protective structure of the operating handle of the load switch according to claim 4, characterized in that, The bottom plate is provided with a lead through hole, and the lead through hole communicates with the accommodation cavity.
6. The protective structure of the operating handle of the load switch according to claim 5, characterized in that, The lead through hole is open at the position where the bottom plate is close to the box body, and the lead through hole is arched.
7. The protective structure of the operating handle of the load switch according to claim 4, wherein, One end of the bottom plate away from the first side plate is provided with an extension portion, the extension portion extends horizontally to the outside of the second side plate, and the extension portion is provided with a first mounting hole; A fixing piece is further arranged on the outer side wall of the box body, and the fixing piece is located in the height direction of the extending part. The fixing piece is provided with a second mounting hole corresponding to the first mounting hole, and the first mounting hole and the second mounting hole are fixedly connected by bolts.
8. The protective structure of the operating handle of the load switch according to claim 3, characterized in that, An observation port is arranged between the second side plate and the box body, and the observation port is communicated with the accommodating cavity.
9. The protective structure of the operating handle of the load switch according to claim 1, wherein, The locking member is a padlock.
10. A box-type transformer, characterized in that, It includes a box body, a load switch and a protection structure of the load switch operating handle according to any one of claims 1 to 9.