Safety protection type frequency conversion control cabinet

Abstract

The utility model provides a safety protection type frequency conversion control cabinet, which belongs to the technical field of frequency conversion control cabinets and comprises a control cabinet, a cabinet door is hinged to the surface of one side of the control cabinet, and a frequency converter is adaptively mounted on the surface of the inner wall of the control cabinet. The locking assembly comprises a connecting block and a limiting block which are fixedly installed on the surface of the cabinet door, the surface of one side of the connecting block is fixedly connected with a spring, and the other end of the spring is fixedly connected with a first locking piece; the heat dissipation assembly comprises an air inlet formed in the surface of the bottom of the inner wall of the control cabinet, and an air inlet is formed in the bottom of the control cabinet. According to the utility model, the explosion-proof door can be effectively locked through the locking assembly, so that the explosion-proof door is prevented from being opened by explosion pressure generated during explosion to influence other parts, and the locking assembly also has the effects of quickly opening the door of the control cabinet and self-locking the door of the control cabinet; the frequency converter can be timely processed when dangerous situations occur, and meanwhile, the door body self-locking can effectively reduce the influence of detonation pressure generated during explosion on workers.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency conversion control cabinets, and in particular relates to a safety protection type frequency conversion control cabinet. Background Art

[0002] The frequency conversion control cabinet adjusts the motor speed by changing the working frequency of the motor. Under the premise of meeting the production process requirements, the motor speed is automatically adjusted to match the motor output power with the actual demand, thereby reducing energy consumption. At the same time, the frequency conversion control cabinet also has a soft start function, which can reduce the impact current when the motor starts and extend the service life of the equipment.

[0003] In the prior art, explosion-proof compartments used to isolate inflammable and explosive electrical components and circuits have the defect of poor locking effect of explosion-proof doors, which may cause a certain part to fail or the explosion pressure generated during the explosion will force the explosion-proof door open and affect other parts. When a dangerous situation occurs, it is difficult to handle the inverter in time due to the setting of the control cabinet. The above situation is often caused by a short circuit caused by excessive temperature inside the control cabinet or excessive temperature difference between the upper and lower areas inside the control cabinet. Utility Model Content

[0004] The purpose of the utility model is to provide a safety protection type frequency conversion control cabinet, aiming to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A safety protection type variable frequency control cabinet comprises a main body component and a control cabinet, a cabinet door is hingedly connected to one side surface of the control cabinet, and a frequency converter is adapted to be installed on the inner wall surface of the control cabinet;

[0007] A locking assembly, comprising a connecting block and a limiting block fixedly mounted on the surface of the cabinet door, a spring fixedly connected to one side surface of the connecting block, a first locking member fixedly connected to the other end of the spring, the first locking member hinged in the limiting block, and a clamping block fixedly connected to the top surface of the first locking member;

[0008] The heat dissipation component includes an air inlet opened on the bottom surface of the inner wall of the control cabinet. The bottom of the control cabinet is provided with an air inlet, a fan rack is fixedly installed at the bottom of the air inlet, an air inlet fan is adapted to be installed on the inner surface of the fan rack, and a base frame is adapted to be installed at the bottom of the fan rack.

[0009] As a preferred solution of the utility model, the main body component also includes a light row fixedly mounted on the surfaces of both sides of the inner wall of the control cabinet, a wiring box is arranged on one side of the inverter, a flameproof compartment is fixedly mounted on one side surface of the inner wall of the control cabinet, and a flameproof door is hingedly mounted on one side surface of the flameproof compartment.

[0010] As a preferred solution of the utility model, the locking assembly also includes a first hinge block fixedly connected to the outer surface of the control cabinet and used in conjunction with the first locking member, and a fixing box is fixedly connected to the surface of the explosion-proof door.

[0011] As a preferred solution of the utility model, the locking assembly also includes a limiting groove opened on one side surface of the inner wall of the fixed box, and the other side surface of the inner wall of the fixed box is fixedly connected to a worm through a bearing, and the other end of the worm passes through the outer surface of the fixed box and is fixedly connected to a ring.

[0012] As a preferred solution of the utility model, the locking assembly also includes a rotary column fixedly connected to the upper and lower surfaces of the inner wall of the fixed box through a bearing, a worm wheel is fixedly installed on the surface of the rotary column, the teeth of the worm wheel are engaged with the thread of the worm, and a transmission gear is fixedly connected to one side surface of the worm wheel.

[0013] As a preferred solution of the utility model, the locking assembly also includes a rack hinged to the teeth of the transmission gear, the rack is hinged in the limiting groove, a connecting groove for use with the rack is provided on one side surface of the fixed box, a second locking piece is fixedly connected to one end surface of the rack, a second hinge block is fixedly installed on the outer surface of the explosion-proof door, and a hinge interface for use with the second locking piece is provided on one side surface of the second hinge block.

[0014] As a preferred solution of the utility model, the heat dissipation component also includes an air outlet opened on the top surface of the inner wall of the control cabinet, and a centrifugal fan used in conjunction with the air outlet is fixedly installed on the top of the outer surface of the control cabinet.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the locking assembly can effectively lock the explosion-proof door to prevent the explosion pressure generated during the explosion from breaking the explosion-proof door open and affecting other parts, and the locking assembly also has the effect of quickly opening and self-locking the control cabinet door; it is convenient for timely handling of the inverter when a dangerous situation occurs, and at the same time, the self-locking of the door body can effectively reduce the impact of the explosion pressure generated during the explosion on the staff; by adding a heat dissipation assembly, the cold air concentrated in the lower area of ​​the control cabinet can be introduced into the upper area of ​​the control cabinet, and the hot air concentrated in the upper area of ​​the control cabinet can also be extracted from the control cabinet, so that when the cooling operation is performed inside the control cabinet, the temperature difference between the upper and lower areas of the control cabinet can be reduced, thereby preventing a certain part from spontaneously igniting and causing an explosion due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

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

[0018] Figure 2 For the utility model Figure 1 A local enlarged schematic diagram of the middle A;

[0019] Figure 3 It is a schematic diagram of another viewing angle of the overall structure of the utility model;

[0020] Figure 4 For the utility model Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0021] Figure 5 It is an overall schematic diagram of the locking assembly in the utility model;

[0022] Figure 6 For the utility model Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0023] Figure 7 It is a schematic internal view of the locking assembly in the present invention.

[0024] In the figure: 100, main assembly; 101, control cabinet; 102, cabinet door; 103, inverter; 104, light row; 105, wiring box; 106, explosion-proof compartment; 107, explosion-proof door; 200, locking assembly; 201, connecting block; 202, limit block; 203, spring; 204, first locking member; 205, card block; 206, first hinge block; 207, fixing box; 2 08, limit groove; 209, worm; 210, ring; 211, rotary column; 212, worm wheel; 213, transmission gear; 214, rack; 215, connecting groove; 216, second locking member; 217, second hinge block; 218, hinge interface; 300, heat dissipation component; 301, air inlet; 302, fan frame; 303, base frame; 304, air outlet; 305, centrifugal fan. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figure 1 and Figure 3 , is the first embodiment of the utility model, which provides a safety protection type variable frequency control cabinet, including:

[0030] The main assembly 100 includes a control cabinet 101, a cabinet door 102 is hingedly connected to one side surface of the control cabinet 101, and a frequency converter 103 is adapted to be installed on the inner wall surface of the control cabinet 101;

[0031] The locking assembly 200 includes a connecting block 201 and a limiting block 202 fixedly mounted on the surface of the cabinet door 102. A spring 203 is fixedly connected to one side surface of the connecting block 201. The other end of the spring 203 is fixedly connected to a first locking member 204. The first locking member 204 is hinged in the limiting block 202. A clamping block 205 is fixedly connected to the top surface of the first locking member 204.

[0032] The heat dissipation component 300 includes an air inlet 301 opened on the bottom surface of the inner wall of the control cabinet 101. The bottom of the control cabinet 101 is provided with the air inlet 301, and a fan rack 302 is fixedly installed at the bottom of the air inlet 301. The inner surface of the fan rack 302 is adapted to be installed with an air inlet fan, and the bottom of the fan rack 302 is adapted to be installed with a base frame 303.

[0033] Specifically, the main component 100 also includes a lamp row 104 fixedly mounted on the surfaces of both sides of the inner wall of the control cabinet 101, a wiring box 105 is provided on one side of the inverter 103, a flameproof compartment 106 is fixedly mounted on one side of the inner wall of the control cabinet 101, and a flameproof door 107 is hinged on one side of the flameproof compartment 106.

[0034] When in use, the frequency converter 103 can adjust the speed of the motor at any time according to production needs to meet different process requirements. The light row 104 is convenient for the staff to observe the internal condition of the control cabinet when repairing it. The wiring box 105 is used to collect and organize the wires in the control cabinet. The flameproof compartment 106 can isolate flammable and explosive electrical components and circuits, and the flameproof door 107 can seal the interior of the flameproof compartment 106.

[0035] In summary, the flameproof compartment 106 can isolate inflammable and explosive electrical components and circuits.

[0036] Example 2

[0037] Reference Figure 3 to Figure 7 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides the structure and function of the locking assembly.

[0038] Specifically, the locking assembly 200 further includes a first hinge block 206 fixedly connected to the outer surface of the control cabinet 101 and used in conjunction with the first locking member 204 , and a fixing box 207 is fixedly connected to the surface of the explosion-proof door 107 .

[0039] Furthermore, the locking assembly 200 also includes a limiting groove 208 opened on one side surface of the inner wall of the fixed box 207, and the other side surface of the inner wall of the fixed box 207 is fixedly connected to a worm 209 through a bearing, and the other end of the worm 209 penetrates to the outer surface of the fixed box 207 and is fixedly connected to a ring 210.

[0040] Preferably, the locking assembly 200 also includes a rotary column 211 fixedly connected to the upper and lower surfaces of the inner wall of the fixed box 207 through a bearing, a worm gear 212 is fixedly installed on the surface of the rotary column 211, the teeth of the worm gear 212 are engaged with the threads of the worm 209, and a transmission gear 213 is fixedly connected to the surface of one side of the worm gear 212.

[0041] It should be noted that the locking assembly 200 also includes a rack 214 hinged to the teeth of the transmission gear 213, the rack 214 is hinged in the limiting groove 208, a connecting groove 215 for use with the rack 214 is provided on one side surface of the fixed box 207, a second locking member 216 is fixedly connected to one end surface of the rack 214, a second hinge block 217 is fixedly installed on the outer surface of the explosion-proof door 107, and a hinge port 218 for use with the second locking member 216 is provided on one side surface of the second hinge block 217.

[0042] When in use, the explosion-proof door 107 of the explosion-proof compartment 106 is closed. At this time, the ring 210 is rotated to drive the other end of the worm 209 to rotate on the inner wall surface of the fixed box 207, so that the worm 209 drives the fixedly installed rotating column 211 and the worm wheel 212 to rotate, and then the worm wheel 212 drives the transmission gear 213 to rotate, and the transmission gear 213 drives the rack 214 to slide in the limit groove 208 toward the connecting groove 215. When the rack 214 drives the second locking member 216 to extend out of the connecting groove 215, the ring 210 is continuously rotated, so that the second locking member 216 is hinged in the hinge port 218, thereby completing the locking of the explosion-proof door 107, and further closing the cabinet door 102. When the cabinet door 102 drives the arc surface of the first locking member 204 to contact the outer surface of the hinge block 206, the cabinet door 102 is closed. When the door is opened, the outer surface of the hinge block 206 will give the first locking member 204 a reaction force, causing the first locking member 204 to slide on the inner surface of the limit block 202 toward the direction of the connecting block 201. When the door body 102 is completely closed, the first locking member 204 will be driven to move to the inner surface position of the hinge block 206 and stop contacting the hinge block 206. At this time, since the spring 203 loses pressure, it will give the first locking member 204 a reaction force, causing the first locking member 204 to be hinged to the inner surface of the hinge block 206, and limit it through the cooperation of the plane of the first locking member 206 and the limit block 202, thereby locking the cabinet door 102. If you need to open the cabinet door 102, you only need to push the block 205 in the direction of the connecting block 201, and reverse the above steps to release the limit on the cabinet door 102.

[0043] In summary, the locking assembly 200 can effectively lock the explosion-proof door 107 to prevent the explosion pressure generated during the explosion from breaking open the explosion-proof door 107 and affecting other parts. The locking assembly 200 also has the effect of quickly opening and self-locking the control cabinet door 102, which facilitates timely handling of the inverter 103 when a dangerous situation occurs. At the same time, the self-locking of the door body can effectively reduce the impact of the explosion pressure generated during the explosion on the staff.

[0044] Example 3

[0045] Reference Figure 1 to Figure 3 , which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides the structure and function of the heat dissipation component.

[0046] Specifically, the heat dissipation assembly 300 further includes an air outlet 304 provided on the top surface of the inner wall of the control cabinet 101 , and a centrifugal fan 305 for use with the air outlet 304 is fixedly installed on the top of the outer surface of the control cabinet 101 .

[0047] When in use, gas is sucked in through the air inlet fan installed on the inner surface of the fan frame 302, so that cold air enters the control cabinet 101 through the air inlet 301, and then the cold air in the lower area of ​​the control cabinet 101 is sucked to the upper area by the centrifugal fan 305. At the same time, the hot air in the upper area can be sucked in and discharged through the air outlet 304, so as to achieve the effect of reducing the temperature difference between the upper and lower areas inside the control cabinet 101 while performing a cooling operation inside the control cabinet 101.

[0048] In summary, by adding the heat dissipation component 300, the cold air concentrated in the lower area of ​​the control cabinet 101 can be introduced into the upper area of ​​the control cabinet 101, and the hot air concentrated in the upper area of ​​the control cabinet 101 can be extracted from the control cabinet 101. Therefore, when the cooling operation is performed inside the control cabinet 101, the temperature difference between the upper and lower areas of the control cabinet 101 can be reduced, thereby preventing a certain part from spontaneously igniting and causing an explosion due to excessive temperature.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A safety protection type frequency conversion control cabinet, characterized in that: include, The main body component (100) comprises a control cabinet (101), a cabinet door (102) being hingedly connected to one side surface of the control cabinet (101), and a frequency converter (103) being adapted and installed on the inner wall surface of the control cabinet (101); A locking assembly (200) comprises a connecting block (201) and a limiting block (202) fixedly mounted on the surface of the cabinet door (102); a spring (203) is fixedly connected to a surface of one side of the connecting block (201); the other end of the spring (203) is fixedly connected to a first locking member (204); the first locking member (204) is hinged in the limiting block (202); and a clamping block (205) is fixedly connected to a top surface of the first locking member (204); The heat dissipation component (300) comprises an air inlet (301) opened on the bottom surface of the inner wall of the control cabinet (101); the bottom of the control cabinet (101) is provided with the air inlet (301); a fan rack (302) is fixedly installed at the bottom of the air inlet (301); an air inlet fan is adapted to be installed on the inner surface of the fan rack (302); and a base frame (303) is adapted to be installed at the bottom of the fan rack (302).

2. A safety protection type frequency conversion control cabinet according to claim 1, characterized in that: The main body component (100) further comprises a lamp row (104) fixedly mounted on the surfaces of both sides of the inner wall of the control cabinet (101); a wiring box (105) is arranged on one side of the frequency converter (103); a flameproof compartment (106) is fixedly mounted on the surface of one side of the inner wall of the control cabinet (101); and a flameproof door (107) is hingedly connected to the surface of one side of the flameproof compartment (106).

3. A safety protection type frequency conversion control cabinet according to claim 2, characterized in that: The locking assembly (200) further comprises a first hinge block (206) fixedly connected to the outer surface of the control cabinet (101) and used in conjunction with the first locking member (204); a fixing box (207) is fixedly connected to the surface of the explosion-proof door (107).

4. A safety protection type frequency conversion control cabinet according to claim 3, characterized in that: The locking assembly (200) further comprises a limiting groove (208) formed on one side surface of the inner wall of the fixing box (207); the other side surface of the inner wall of the fixing box (207) is fixedly connected to a worm (209) via a bearing; the other end of the worm (209) penetrates the outer surface of the fixing box (207) and is fixedly connected to a ring (210).

5. A safety protection type frequency conversion control cabinet according to claim 4, characterized in that: The locking assembly (200) further comprises a rotating column (211) fixedly connected to the upper and lower surfaces of the inner wall of the fixing box (207) via a bearing, a worm wheel (212) being fixedly mounted on the surface of the rotating column (211), the teeth of the worm wheel (212) being meshed with the threads of the worm (209), and a transmission gear (213) being fixedly connected to one side surface of the worm wheel (212).

6. A safety protection type frequency conversion control cabinet according to claim 5, characterized in that: The locking assembly (200) further comprises a rack (214) hinged to the teeth of the transmission gear (213); the rack (214) is hinged in the limiting groove (208); a communicating groove (215) for use with the rack (214) is provided on one side surface of the fixing box (207); a second locking member (216) is fixedly connected to one end surface of the rack (214); a second hinge block (217) is fixedly installed on the outer surface of the explosion-proof door (107); and a hinge port (218) for use with the second locking member (216) is provided on one side surface of the second hinge block (217).

7. A safety protection type frequency conversion control cabinet according to claim 6, characterized in that: The heat dissipation assembly (300) further comprises an air outlet (304) provided on the top surface of the inner wall of the control cabinet (101), and a centrifugal fan (305) for use with the air outlet (304) is fixedly mounted on the top of the outer surface of the control cabinet (101).

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