Interlocking mechanism for controlling opening and closing sequence of switch cabinet door and use method

Abstract

The invention discloses an interlocking mechanism for controlling the opening and closing sequence of a cabinet door of a switch cabinet and a use method, and belongs to the technical field of switch cabinet equipment, the interlocking mechanism for controlling the opening and closing sequence of the cabinet door of the switch cabinet comprises a cabinet body and an interlocking mechanism, the cabinet body is used for separating electrified intervals, and the cabinet body comprises an upper cabinet door, a partition plate, a lower cabinet door and a base body; the upper cabinet door is fixedly connected with the upper part of the base body through bolts, the right side of one end of the lower cabinet door is screwed with the lower part of the base body through a hinge, and the left side of the lower cabinet door is fixedly connected with the base body through bolts, so that the lower cabinet door can be opened through the hinge after the bolts are removed; the side face of the upper cabinet door is fixedly connected with the lock rod, one end of the lock rod is provided with a spiral hole, the lock rod is connected with the interlocking mechanism through the spiral hole, the opening and closing sequence of the upper cabinet door and the lower cabinet door is controlled through the interlocking mechanism, mistaken opening and mistaken closing of the cabinet doors are prevented, and only when the upper compartment is not electrified, the upper cabinet door can be opened to enter the upper compartment, and mistaken entering into the electrified compartment is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinet equipment, and in particular to an interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors and a use method thereof. Background Art

[0002] In the high-voltage environmentally friendly gas switch cabinet, a locking mechanism needs to be set between the rear door of the high-voltage cable room and the switch of the switch cabinet to ensure the safety of the operator. The locking mechanism can avoid operating the physical object and improve the safety and reliability of the environmentally friendly gas switch cabinet.

[0003] Some of the current interlocking mechanisms have complex components. Under long-term operation and environmental influences, they are prone to performance degradation and durability reduction, which in turn increases the possibility of failure. Once the key components of the interlocking mechanism fail, not only will the workers be exposed to high-voltage current environments, increasing the risk of electric shock, and even endangering their lives in severe cases, but it may also damage the internal equipment of the high-voltage switchgear, causing short circuits or other electrical failures, affecting surrounding residents; in addition, during the operation of the interlocking mechanism, the complex interlocking structure may become loose if the worker accidentally touches or misoperates it; at the same time, external factors such as temperature fluctuations, such as the expansion of metal materials caused by high temperature, will also weaken the stability of the interlocking mechanism.

[0004] Common switch cabinets are equipped with upper cabinet doors and lower cabinet doors, and the upper cabinet doors and lower cabinet doors are connected by a locking mechanism, but the commonly used locking mechanism cannot ensure the opening order of the upper cabinet door and the lower cabinet door, which is not conducive to the safe maintenance of the staff. In view of the above problems, there is an urgent need for a new locking mechanism for the rear door of the high-voltage switch cabinet, which can achieve reliable locking through a mechanical locking mechanism to avoid accidents. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides an interlocking mechanism for the opening and closing sequence of the upper and lower doors of a switch cabinet, which can control the opening and closing sequence of the upper and lower doors. The upper door can be opened to enter the compartment only when the upper compartment is not energized; at the same time, the lower compartment door can only be closed after the upper compartment door is closed. The device solves the problem of preventing accidental entry into a energized compartment.

[0006] The present invention adopts the following technical solution.

[0007] The first aspect of the present invention discloses a locking mechanism for controlling the opening and closing sequence of switch cabinet doors, comprising: a cabinet body and a locking mechanism, wherein the cabinet body is used to separate the live compartments, and the cabinet body comprises: an upper cabinet door, a partition, a lower cabinet door and a base, wherein the upper cabinet door is fixedly connected to the upper part of the base by bolts, and the right side of one end of the lower cabinet door is screwed to the lower part of the base by a hinge, and the left side of the lower cabinet door is fixedly connected to the base by bolts, so that the lower cabinet door can be opened by the hinge after the bolts are removed, and a partition is arranged between the upper cabinet door and the lower cabinet door, and the locking mechanism is arranged on the partition;

[0008] The side of the upper cabinet door is fixedly connected to the locking rod, one end of the locking rod is provided with a spiral hole, the locking rod is connected to the interlocking mechanism through the spiral hole, and the opening and closing sequence of the upper and lower cabinet doors is controlled by the interlocking mechanism to prevent the cabinet doors from being opened or closed by mistake.

[0009] Preferably, the interlocking mechanism includes: a connecting rod, the connecting rod and the partition are screwed together, the top of the connecting rod is a threaded structure, the threaded structure on the connecting rod is matched with the spiral hole on the locking rod, and the connecting rod passes through the partition and is screwed and fixed to the locking rod through the spiral hole.

[0010] Preferably, the interlocking mechanism also includes: a transition rod and a stop rod, the top of the transition rod is screwed to the bottom of the connecting rod, the transition rod is coaxial with the connecting rod, a hinged hole is provided at the bottom of the transition rod, and the transition rod is hinged to one end of the stop rod through the hinged hole.

[0011] Preferably, the barrier rod comprises: a first straight segment and a second straight segment, and the end of the second straight segment and the transition rod are hingedly connected via a hinged hole.

[0012] Preferably, the length of the first straight line segment is greater than that of the second straight line segment. When the first straight line segment is in a horizontal position, the first straight line segment will extend from the end surface of the base, and the connection between the second straight line segment and the first straight line segment is connected to the support frame.

[0013] Preferably, the support frame includes: a base and a triangular piece, the base is fixed to the bottom side of the partition by bolts, two triangular pieces are symmetrically arranged on the bottom side of the base, a hinged hole 2 is provided at the lower end of the triangular piece, and the connection between the second straight line segment and the first straight line segment passes through the two triangular pieces and is hinged to the support frame through the hinged hole 2.

[0014] Preferably, the interlocking mechanism further comprises: a spring, one end of the spring is fixed on the base of the support frame, and the other end of the spring is fixed on the first straight line segment on the shift rod.

[0015] The second aspect of the present invention discloses a method for using an interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors. Based on the interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors, the method comprises the following steps:

[0016] The upper and lower cabinet doors are locked, and the connecting rod is inserted into the threaded hole on the locking rod;

[0017] Open the lower cabinet door first to release the restriction of the locking mechanism on the upper cabinet door;

[0018] When the upper cabinet door is opened, the interlocking mechanism prevents the lower cabinet door from closing under the action of the spring.

[0019] Preferably, the step of first opening the lower cabinet door to release the restriction of the interlocking mechanism on the upper cabinet door includes:

[0020] Remove the bolts on the four sides of the lower cabinet door and open the lower cabinet door via the hinges;

[0021] Enter the lower compartment from the lower cabinet door and unscrew the connecting rod from the threaded hole on the locking rod;

[0022] The connecting rod and the locking rod are separated, and the upper cabinet door loses its restraint.

[0023] Preferably, when the upper cabinet door is opened, the interlocking mechanism prevents the lower cabinet door from closing under the action of a spring, including:

[0024] Remove the bolts on the four sides of the upper cabinet door and open the upper cabinet door;

[0025] The spring on the interlocking mechanism pulls the barrier rod to a horizontal position under the deformation force;

[0026] The stopper rod extends from the end surface of the base body to prevent the lower cabinet door from closing.

[0027] The beneficial effect of the present invention lies in that, compared with the prior art, when the connecting rod of the present invention is screwed into the threaded hole on the locking rod, the baffle rod is stretched and arranged obliquely, the spring is in a tensioned state, and the baffle rod does not extend out of the end surface of the base body, so that the upper and lower cabinet doors can be closed. At the same time, when the lower cabinet door is closed, the movement of the upper cabinet door is restricted by the connection between the connecting rod and the locking rod, so that the upper cabinet door cannot be opened when the lower cabinet door is closed, and the upper cabinet door can only be opened to enter the upper compartment when the upper compartment is not energized, thereby avoiding operating errors by staff, opening the wrong cabinet door and mistakenly entering the energized interval, causing safety accidents.

[0028] Furthermore, after the connecting rod is disconnected from the locking rod, one end of the barrier rod is pulled up to the horizontal line under the action of the spring, and the left end of the barrier rod is in a horizontal position and extends from the end surface of the base to prevent the lower cabinet door from being accidentally closed. At this time, the lower cabinet door will not be able to be closed, ensuring that the lower cabinet door cannot be closed when the upper cabinet door is opened, so that the staff can work steadily and improve safety.

[0029] The present invention controls the locking of the cabinet door through a simple structure, is easy to use, will not cause the cabinet door to be opened or closed by mistake due to damage to some key structures, thereby improving safety and having high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a first structural diagram of the present invention;

[0031] Figure 2is a second structural diagram of the present invention;

[0032] In the figure: 1, upper cabinet door; 2, locking rod; 3, partition; 4, lower cabinet door; 5, connecting rod; 6, supporting frame; 61, base; 62, triangular piece; 7, transition rod; 8, gear rod; 81, first straight line segment; 82, second straight line segment; 9, spring; 10, hinge; 11, base; 12, reamed hole one; 13, reamed hole two. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0034] like Figure 1-Figure 2 As shown, the present invention provides a locking mechanism for controlling the opening and closing sequence of switch cabinet doors and a method for using the same. The device comprises: a locking mechanism and a cabinet body, wherein the cabinet body separates the live compartments, and the cabinet body comprises: an upper cabinet door 1, a locking rod 2, a partition 3, a lower cabinet door 4 and a base 11. The four sides of the upper cabinet door 1 are fixedly connected to the upper left side of the base 11 by bolts. The upper compartment can only be entered by removing the bolts and removing the upper cabinet door 1. The upper compartment is on the right side of the upper cabinet door 1. The locking rod 2 is welded to the side of the upper cabinet door 1. A spiral hole is provided at one end of the locking rod 2. The size and shape of the spiral hole and the connecting rod 5 are adaptively matched. The connecting rod 5 and the spiral hole are screwed and fixed to play a locking role.

[0035] The right side of the lower cabinet door 4 is screwed to the base 11 through the hinge 10, so that the lower cabinet door 4 can open and close with the hinge 10 as the center. At the same time, the four sides of the left side of the lower cabinet door 4 are fixed to the base 11 through bolts. To enter the lower compartment, the bolts on the lower cabinet door 4 must be removed, and then the lower cabinet door 1 must be opened through the hinge 10.

[0036] The partition 3 is arranged between the upper cabinet door 1 and the lower cabinet door 4, and is used to separate the upper and lower cabinet doors. A locking mechanism is arranged on the partition 3, and a through hole is arranged at the right end of the partition 3, and the through hole can pass through the connecting rod 5;

[0037] The interlocking mechanism is used to control the opening and closing sequence of the upper and lower cabinet doors. The interlocking mechanism includes: a connecting rod 5, a transition rod 7, a support frame 6, a shift rod 8 and a spring 9. The top of the connecting rod 5 is a threaded structure and the middle is a hexagonal stud. The connecting rod 5 and the partition 3 are screwed together. The connecting rod 5 can rotate independently. The threaded structure on the connecting rod 5 is adaptively matched with the spiral hole on the lock rod 2. The connecting rod 5 passes through the partition 3 and is screwed and fixed to the lock rod 2 through the spiral hole.

[0038] The top of the transition rod 7 is screwed to the bottom of the connecting rod 5, and the transition rod 7 and the connecting rod 5 are on the same vertical axis; a hinged hole 12 is provided at the bottom of the transition rod 7, and the transition rod 7 is hinged to one end of the blocking rod 8 through the hinged hole 12. The blocking rod 8 includes: a first straight line segment 81 and a second straight line segment 82, and the end of the second straight line segment 82 is hinged to the transition rod 7 through the hinged hole 12. At the same time, the length of the first straight line segment 81 is greater than that of the second straight line segment 82. Therefore, when the first straight line segment 81 is in a horizontal position, the first straight line segment 81 will extend from the end face of the base 11, so that the lower cabinet door 4 cannot be closed to avoid accidental closing. The connection between the second straight line segment 82 and the first straight line segment 81 is connected to the support frame 6.

[0039] The support frame 6 includes: a base 61 and a triangular piece 62. The base 61 is fixed to the bottom side of the partition 3 by bolts. Two triangular pieces 62 are symmetrically arranged on the bottom side of the base 61. A second hinged hole 13 is provided at the lower end of the triangular piece 62. The connection between the second straight line segment 82 and the first straight line segment 81 passes through the two triangular pieces 62 and is hinged to the support frame 6 through the second hinged hole 13.

[0040] The first straight section 81 on the baffle rod 8 is connected to the spring 9, one end of the spring 9 is fixed on the base 61 of the support frame 6, and the other end of the spring 9 is fixed on the upper side of the first straight section 81 on the baffle rod 8. When the upper and lower cabinet doors are locked, the connecting rod 5 is screwed into the threaded hole on the locking rod 2, so that the spring 9 is in a tensioned state, and the baffle rod 8 is set obliquely.

[0041] The working principle of the present invention is as follows: the connecting rod 5 is screwed into the threaded hole on the locking rod 2, the blocking rod 8 is pulled and arranged obliquely, and the spring 9 is in a tensioned state. At this time, the first straight section 81 on the blocking rod 8 does not extend from the end surface of the base 11, and the lower cabinet door 4 is closed. At the same time, when the lower cabinet door 4 is closed, the movement of the upper cabinet door 1 is restricted by the connection between the connecting rod 5 and the locking rod 2, so that the upper cabinet door 1 cannot be opened when the lower cabinet door 4 is closed, so as to avoid the staff from operating incorrectly and opening the wrong cabinet door and entering the live interval by mistake. Further, when opening the upper and lower cabinet doors, the upper cabinet door 1 is opened first. Open the lower cabinet door 4 and unscrew the connecting rod 5 from the inside of the lower compartment. The connecting rod 5 is disconnected from the locking rod 2. At this time, the upper cabinet door 1 loses its constraint and is opened. Further, after the connecting rod 5 is disconnected from the locking rod 2, the first straight section 81 of the shift rod 8 is pulled up to the horizontal line under the action of the spring 9. When the first straight section 81 is in a horizontal position, it extends from the end surface of the base 11 to prevent the lower cabinet door 4 from being closed by mistake. At this time, the lower cabinet door 4 will not be able to be closed, which ensures that the lower cabinet door 4 cannot be closed when the upper cabinet door 3 is opened, and the safety is higher.

[0042] Embodiment 2 of the present invention discloses a method for using an interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors, comprising the following steps:

[0043] Step 1: Lock the upper and lower cabinet doors, and insert the connecting rod 5 into the threaded hole on the locking rod 2;

[0044] Step 2: First open the lower cabinet door 4 to release the restriction of the interlocking mechanism on the upper cabinet door 1;

[0045] Step 2.1: Remove the bolts on the four sides of the lower cabinet door 4 and open the lower cabinet door 4 through the hinge 10;

[0046] Step 2.2: Unscrew the connecting rod 5 from the threaded hole on the locking rod 2 from the lower compartment with the lower cabinet door 4 opened;

[0047] Step 2.3: The connecting rod 5 and the locking rod 2 are separated, and the upper cabinet door 1 loses its restraint;

[0048] Step 3: Open the upper cabinet door 1, and the interlocking mechanism prevents the lower cabinet door 4 from closing under the action of the spring;

[0049] Step 3.1: Remove the bolts on the four sides of the upper cabinet door 1 and open the upper cabinet door 1;

[0050] Step 3.2: The spring 9 on the interlocking mechanism pulls the blocking rod 8 to a horizontal position under the deformation force;

[0051] Step 3.3: The stop rod 8 extends from the end surface of the base 11 to prevent the lower cabinet door 4 from closing.

[0052] The beneficial effect of the present invention lies in that, compared with the prior art, when the connecting rod of the present invention is screwed into the threaded hole on the locking rod, the baffle rod is stretched and arranged obliquely, the spring is in a tensioned state, and the baffle rod does not extend out of the end surface of the base body, so that the upper and lower cabinet doors can be closed. At the same time, when the lower cabinet door is closed, the movement of the upper cabinet door is restricted by the connection between the connecting rod and the locking rod, so that the upper cabinet door cannot be opened when the lower cabinet door is closed, and the upper cabinet door can only be opened to enter the upper compartment when the upper compartment is not energized, thereby avoiding operating errors by staff, opening the wrong cabinet door and mistakenly entering the energized interval, causing safety accidents.

[0053] Furthermore, after the connecting rod is disconnected from the locking rod, one end of the barrier rod is pulled up to the horizontal line under the action of the spring, and the left end of the barrier rod is in a horizontal position and extends from the end surface of the base to prevent the lower cabinet door from being accidentally closed. At this time, the lower cabinet door will not be able to be closed, ensuring that the lower cabinet door cannot be closed when the upper cabinet door is opened, so that the staff can work steadily and improve safety.

[0054] The present invention controls the locking of the cabinet door through a simple structure, is easy to use, will not cause the cabinet door to be opened or closed by mistake due to damage to some key structures, thereby improving safety and having high stability.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A locking mechanism for controlling the opening and closing sequence of switch cabinet doors, comprising: The cabinet and interlocking mechanism are characterized by: The cabinet is used to separate live compartments, and comprises: an upper cabinet door (1), a partition (3), a lower cabinet door (4) and a base (11); the upper cabinet door (1) is fixedly connected to the upper part of the base (11) by bolts; the right side of one end of the lower cabinet door (4) is screwed to the lower part of the base (11) by a hinge (10); and the left side of the lower cabinet door (4) is fixedly connected to the base (11) by bolts, so that the lower cabinet door (4) can be opened by the hinge (10) after the bolts are removed; a partition (3) is arranged between the upper cabinet door (1) and the lower cabinet door (4), and a locking mechanism is arranged on the partition (3); The side surface of the upper cabinet door (1) is fixedly connected to the locking rod (2), one end of the locking rod (2) is provided with a spiral hole, the locking rod (2) is connected to the interlocking mechanism via the spiral hole, and the opening and closing sequence of the upper and lower cabinet doors is controlled via the interlocking mechanism to prevent the cabinet doors from being opened or closed by mistake.

2. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 1, characterized in that: The interlocking mechanism comprises: a connecting rod (5), the connecting rod (5) and the partition (3) are screwed together, the top of the connecting rod (5) is a threaded structure, the threaded structure on the connecting rod (5) is matched with the spiral hole on the locking rod (2), and the connecting rod (5) passes through the partition (3) and is screwed and fixed to the locking rod (2) through the spiral hole.

3. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 1, characterized in that: The interlocking mechanism further comprises: a transition rod (7) and a stop rod (8); the top of the transition rod (7) is screwed to the bottom of the connecting rod (5); the transition rod (7) and the connecting rod (5) are coaxial; a hinged hole (12) is provided at the bottom of the transition rod (7); and one end of the transition rod (7) and the stop rod (8) are hingedly connected via the hinged hole (12).

4. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 3, characterized in that: The blocking rod (8) comprises a first straight segment (81) and a second straight segment (82), and the end of the second straight segment (82) and the transition rod (7) are hingedly connected via a hinged hole (12).

5. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 4, characterized in that: The length of the first straight line segment (81) is greater than that of the second straight line segment (82); when the first straight line segment (81) is in a horizontal position, the first straight line segment (81) extends from the end surface of the base (11); and the connection between the second straight line segment (82) and the first straight line segment (81) is connected to the support frame (6).

6. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 5, characterized in that: The support frame (6) comprises: a base (61) and a triangular piece (62); the base (61) is fixed to the bottom side of the partition (3) by means of bolts; two triangular pieces (62) are symmetrically arranged on the bottom side of the base (61); a second hinged hole (13) is arranged at the lower end of the triangular piece (62); a connection point between the second straight line segment (82) and the first straight line segment (81) passes through between the two triangular pieces (62) and is hinged to the support frame (6) through the second hinged hole (13).

7. The interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 1, characterized in that: The interlocking mechanism also includes a spring (9), one end of the spring (9) is fixed on the base (61) of the support frame (6), and the other end of the spring (9) is fixed on the first straight line segment (81) on the shift rod (8).

8. A method for using a locking mechanism for controlling the opening and closing sequence of switch cabinet doors, based on the locking mechanism for controlling the opening and closing sequence of switch cabinet doors according to any one of claims 1 to 7, characterized in that: The upper and lower cabinet doors are locked, and the connecting rod (5) is inserted into the threaded hole on the locking rod (2); First, open the lower cabinet door (4) to release the restriction of the interlocking mechanism on the upper cabinet door (1); When the upper cabinet door (1) is opened, the interlocking mechanism prevents the lower cabinet door (4) from closing under the action of the spring (9).

9. The method for using the interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 8 is characterized in that: The step of first opening the lower cabinet door (4) to release the restriction of the interlocking mechanism on the upper cabinet door (1) comprises: Remove the bolts on the four sides of the lower cabinet door (4), and open the lower cabinet door (4) via the hinges (10); Enter the lower compartment from the lower cabinet door (4) and screw the connecting rod (5) out of the threaded hole on the locking rod (2); The connecting rod (5) and the locking rod (2) are separated, and the upper cabinet door (1) loses its restraint.

10. The method for using the interlocking mechanism for controlling the opening and closing sequence of switch cabinet doors according to claim 8, characterized in that: When the upper cabinet door (1) is opened, the interlocking mechanism prevents the lower cabinet door (4) from closing under the action of the spring (9), comprising: Remove the bolts on the four sides of the upper cabinet door (1) and open the upper cabinet door (1); The spring (9) on the interlocking mechanism pulls the blocking rod (8) to a horizontal position under deformation force; the blocking rod (8) extends from the end surface of the base (11) to prevent the lower cabinet door (4) from closing.

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