A mechanical program lock, switch cabinet and use method thereof

Abstract

The present invention discloses a mechanical program lock, which belongs to the field of electrical switch equipment, and includes a lock body main body, on which there is a rotatable lock core; a lock body matching part, on which there is a linkage part, a limit part and a linkage mechanism, wherein the linkage part can rotate with the rotation of the lock core, and the linkage mechanism can link the limit part to perform lifting and lowering movements when the linkage part rotates. The mechanical program lock of the present invention drives the linkage part to rotate through the lock core, and when the linkage part rotates, the limit part is linked to the linkage mechanism to perform lifting and lowering movements; the present invention also discloses a switch cabinet including the lock and a method for using the lock, so as to realize the push-in operation of the circuit breaker on the switch cabinet, solves the problem that the traditional lock needs to open the cabinet door and the uncontrollability of whether the circuit breaker can be equipped with a program lock, and is more convenient to install and use, and safe and reliable to operate.

Description

Technical Field

[0001] The invention relates to the field of electrical switch equipment, and in particular to a mechanical program lock, a switch cabinet and a use method thereof. Background Art

[0002] Mechanical program locks force operators to operate electrical equipment correctly according to established safety operating procedures, thereby avoiding misoperation of electrical equipment and meeting the "five prevention" requirements more perfectly. Traditional mechanical program locks (three locks and two keys) have the following disadvantages: (1) They need to be worn on the circuit breaker, which is expensive, and the coordination between the switch cabinet and the circuit breaker must also be considered, which requires a large amount of engineering work; (2) Since few circuit breakers are equipped with mechanical program locks, switch cabinet manufacturers need to purchase mechanical program locks on their own, but switch cabinet manufacturers need to make holes on the circuit breakers to install program locks; the panel of the circuit breaker is thick and not easy to make holes, and the folded edge next to the circuit breaker is not conducive to installing program locks; (3) Without a mechanical program lock, misoperation is prone to occur when relying on the electrical program lock; (4) The switch cabinet door needs to be opened to operate the mechanical program lock, which is unsafe for operators. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a mechanical program lock.

[0004] The technical solution of the present invention is as follows:

[0005] A mechanical program lock, comprising:

[0006] A mechanical program lock, comprising:

[0007] The lock body has a rotatable lock core;

[0008] The lock body mating part has a linkage part, a limit part and a linkage mechanism, and the linkage part can rotate with the lock core; the linkage mechanism includes a fixed seat and a blocking member, the limit part can be movably arranged on the fixed seat, the fixed seat is fixedly connected to the linkage part so as to rotate therewith, and the blocking member abuts against the limit part, and can link with the limit part to move when the fixed seat rotates.

[0009] Preferably, the lock body mating portion further comprises a first elastic device, and the first elastic device is used to drive the limiting member to reset.

[0010] Preferably, the linkage member is a linkage rod, one end of which is fixedly connected to the lock core and the other end of which is hinged with a movable seat, and the blocking member is a side edge of the movable seat.

[0011] Preferably, the lock body mating portion further comprises a second elastic device, and the second elastic device is used for driving the movable seat to reset.

[0012] Preferably, a movable hole is provided on the movable seat, the limiting member is a limiting pin, the lower end of which is rotatably provided on a latch, the latch is fixed on the fixed seat, and both ends of the latch are respectively placed in the movable hole.

[0013] Preferably, the lock body main body includes a key, and the key can drive the lock cylinder to rotate.

[0014] The present invention also discloses a switch cabinet, comprising a cabinet body for placing a circuit breaker, the cabinet body having a middle partition, the middle partition being mounted with the mechanical program lock as described above, and the cabinet body being further provided with a driving device for driving the circuit breaker to enter a working position or return to a test position.

[0015] Preferably, a through hole is provided on the middle partition plate, and the limiting member on the mechanical program lock can move up and down at the through hole to allow or limit the movement of the circuit breaker.

[0016] The present invention also discloses a method for using the switch cabinet as described above, comprising the following steps: starting the mechanical program lock, the limit member thereon descends, the driving device drives the circuit breaker to enter the working position or return to the test position, closing the mechanical program lock, the limit member thereon ascends, and restricting the movement of the circuit breaker.

[0017] The present invention has at least one of the following beneficial effects:

[0018] (1) A mechanical program lock of the present invention drives a linkage member to rotate through a rotatable lock core. When the linkage member rotates, the linkage limit member is linked to the linkage mechanism to perform a lifting movement, thereby realizing the opening and closing action of the mechanical program lock. The lock has good versatility and is safe and reliable to operate.

[0019] (2) A switch cabinet of the present invention sets a mechanical program lock on the middle partition of the cabinet body, which can realize or prevent the pushing-in operation of the circuit breaker without operating the switch cabinet door, which is convenient, safe and reliable.

[0020] (3) The method for using a switch cabinet of the present invention solves the problem that a traditional lock requires the cabinet door to be opened and the uncontrollable problem of whether a circuit breaker can be equipped with a program lock. The method is more convenient to install and use, and the operation is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Middle A is a partial enlarged view;

[0023] Figure 3 is a schematic cross-sectional view of a first embodiment of the present invention;

[0024] Figure 4 is a state diagram of the first embodiment of the present invention when the key is not turned;

[0025] Figure 5 is a state diagram of the first embodiment of the present invention when the key is turned;

[0026] Figure 6 is a schematic structural diagram of a lock core in a first embodiment of the present invention;

[0027] Figure 7 is a schematic diagram of the structure of the key in the first embodiment of the present invention;

[0028] Figure 8 is a schematic structural diagram of a second embodiment of the present invention;

[0029] In the figure, 1-linkage rod, 2-support fixing plate, 3-lock cylinder, 4-key, 5-fixed seat, 6-limiting piece, 7-latch pin, 8-spring, 9-connecting rod fixing card, 10-fixed pin, 11-middle partition, 12-cabinet, 13-circuit breaker, 14-lock body main part, 15-lock body matching part, 16-movable seat, 17-movable hole, 18-unlocking hole. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 8 , the first embodiment of the present invention:

[0035] A mechanical program lock, comprising:

[0036] The lock body main body 14 has a rotatable lock cylinder 3 thereon;

[0037] The lock body mating part 15 is provided with a linkage part, a limit part 6 and a linkage mechanism. The linkage part can rotate with the rotation of the lock core 3, and the linkage mechanism can link the limit part 6 to perform lifting and lowering movements when the linkage part rotates. Specifically, the linkage part is a linkage rod 1, and the limit part 6 is a limit pin; the linkage mechanism includes a fixed seat 5 and a blocking member, the limit part 6 is movably arranged on the fixed seat 5, specifically, a latch pin 7 is arranged on the fixed seat 5, and the limit part 6 is rotatably arranged on the latch pin 7, the fixed seat 5 is fixedly connected to the linkage rod 1 to rotate with the linkage rod 1, thereby linking the limit part 6 to rotate, the blocking member abuts against the limit part 6, and when the fixed seat 5 continues to rotate, the limit part 6 is linked to perform lifting and lowering movements; the limit part 6 adopts a limit pin.

[0038] In this embodiment, the rotatable lock core 3 drives the linkage member to rotate, and when the linkage member rotates, the linkage limit member 6 is linked to the lifting movement through the linkage mechanism, specifically, the opening and closing action of the mechanical program lock is realized, the versatility is good, and the operation is safe and reliable.

[0039] As a preferred embodiment of the present invention, it may also have the following additional technical features:

[0040] The lock body matching portion 15 also includes a first elastic device, which is used to drive the limiting member to reset, and can effectively avoid the displacement of the limiting member 6 caused by long-term use.

[0041] More specifically, the first elastic device is a spring 8, which is sleeved on the latch 7, with one end fixed to the side wall of the fixing seat 5 and the other end connected to the limit pin, so as to facilitate resetting the limit pin when it is displaced and enable precise lifting and lowering operations from the through hole.

[0042] One end of the linkage member, i.e. the linkage rod 1, is fixedly connected to the lock core 3, and the other end is hinged with a movable seat 16. The blocking member is a side edge on the movable seat 16. When the key 4 is turned, the limit pin can abut against a side edge on the movable seat 16 to drive the limit pin to move downward.

[0043] The lock body matching part 15 also includes a second elastic device, which is used to drive the fixing seat 5 to reset. Specifically, the second elastic device uses a spring 8, which is sleeved on the outer wall of the linkage rod 1. One end of the second elastic device is fixed to the linkage rod 1 using a connecting rod fixing card 9, and the other end is connected to the fixing seat 5 or the movable seat 16. This setting is to effectively avoid the displacement of the fixing seat 5 or the movable seat 16 when the mechanical lock is used for a long time. More specifically, the fixing seat 5 and the movable seat 16 are both U-shaped plates, and the fixing seat 5 is located inside the movable seat 16.

[0044] The lock body main body 14 includes a key 4, and the key 4 can drive the lock core 3 to rotate. Specifically, the key includes a rotating handle 401 and a locking rod 402. The lock core 3 has a lock hole 301 adapted to the locking rod, and the locking rod 402 can be inserted into the lock hole 301. When the rotating handle 401 is turned, the locking rod 402 drives the lock core 3 to rotate, thereby realizing the rotation of the linkage rod 1 in the movable seat 16, and the linkage rod 1 drives the fixed seat 5 to rotate, and the limit pin located on the fixed seat 5 rotates together, and the limit pin abuts against one side edge on the movable seat 16, and the limit pin rotates around the latch pin 7 to realize the lifting and lowering movement of the limit pin.

[0045] As a second embodiment of the present invention: a switch cabinet includes a cabinet for placing a circuit breaker 13, the cabinet 12 has a middle partition 11, the middle partition 11 is installed with a mechanical program lock as described in the first embodiment, specifically, by setting a support fixing plate 2 on the middle partition 11, the linkage rod 1 is fixed on the support fixing plate 2, the cabinet 12 is also provided with a driving device for driving the circuit breaker 13 to move back and forth, specifically, the cabinet 12 is provided with a lock hole 18, and the driving device can be a gear rack transmission The circuit breaker 13 may be driven in a manual manner or in a screw transmission manner, that is, a slider is provided on the bottom of the circuit breaker 13, a bracket is installed on the cabinet 12, screws are threadedly connected to both ends of the bracket, the slider is connected to the screw, guide rails are provided on the side walls of the bracket, and the two side walls of the slider can slide on the guide rails, a rotating shaft is connected to the input end of the screw, the rotating shaft passes through the unlocking hole 18, and a detachable hand crank is connected to the front end of the rotating shaft. In some applications, an unlocking door is also hinged on the unlocking hole 18, and a door lock is provided on it to open the driving device when needed.

[0046] A through hole is provided on the middle partition 11, and the limit member can move up and down at the through hole to allow or limit the movement of the circuit breaker 13. More specifically, the circuit breaker 13 is provided with a moving wheel, and the movable seat 16 is fixed on the middle partition 11. When the key is not turned, the limit member, i.e., the limit pin 6, abuts against the blocking member. This setting can block the movement of the moving wheel. After the key is turned, the lock cylinder 3 drives the linkage rod 1 to rotate, and the fixed seat 5 rotates accordingly. The limit pin 6 hinged on the fixed seat 5 rotates with the fixed seat 5 and abuts against the side of the movable seat 16 to descend from the through hole to allow the circuit breaker 13 to be pushed into the working position in the cabinet 12.

[0047] The present invention also discloses a third embodiment: a method for using a switch cabinet, comprising the following steps: starting the mechanical program lock in the first embodiment, the limit member 6 thereon descends, the driving device drives the circuit breaker 13 to enter the working position or return to the test position, closing the mechanical program lock, the limit member 6 thereon rises, and restricts the movement of the circuit breaker 13.

[0048] In some other embodiments, the cabinet body 12 of the switch cabinet includes a working position and a test position. The circuit breaker 13 is pushed into the interior, that is, it is in the working position, and the circuit breaker 13 can operate normally. If it is in the test position, the circuit breaker 13 can only be used to repair its own fault. Therefore, under normal circumstances, the door on the cabinet body is closed. As long as the mechanical program lock of the above embodiment is started, the limit member 6 descends, that is, the limit member 6 does not block the slider or moving wheel at the bottom of the circuit breaker 13, allowing the slider on the circuit breaker 13 to be pushed into the working position. The pushing method adopts the following method: open the door lock, open the unlocking door, and use a hand crank installed on the rotating shaft to shake it, drive the screw rod to rotate, thereby driving the slider to move, that is, the circuit breaker 13 moves to the working position. This method is safer and more reliable, has good versatility, and solves the disadvantage of poor versatility of traditional locks. The circuit breaker 13 can also be pushed in by other methods, and is not limited to this.

[0049] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0050] In the description of the embodiments of the present invention, it is to be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A, and less than or equal to B. "A~B" represents a range greater than or equal to A, and less than or equal to B.

[0051] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0052] The above description is only a preferred implementation mode of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means belongs to the protection scope of the present invention.

Claims

1. A mechanical program lock, characterized in that: include: A lock body (14) having a rotatable lock core (3); The lock body matching part (15) has a linkage part, a limit part (6) and a linkage mechanism, and the linkage part can rotate with the lock core (3); The linkage mechanism comprises a fixed seat (5) and a blocking member, the limiting member (6) is movably arranged on the fixed seat (5), the fixed seat (5) is fixedly connected to the linkage member so as to rotate therewith, the blocking member abuts against the limiting member (6), and can be linked to the limiting member (6) to perform a lifting action when the fixed seat (5) rotates; The lock body matching part (15) further comprises a first elastic device, wherein the first elastic device is used to drive the position limiting member (6) to reset; The linkage member is a linkage rod (1), one end of which is fixedly connected to the lock core (3), and the other end of which is hingedly connected to a movable seat (16), and the blocking member is a side edge of the movable seat (16); The lock body matching part (15) further comprises a second elastic device, and the second elastic device is used to drive the movable seat (16) to reset; The movable seat (16) is provided with a movable hole (17), the limiting member (6) is a limiting pin, the lower end of which is rotatably arranged on a latch (7), the latch (7) is fixed on the fixed seat (5), and the two ends of the latch (7) are respectively placed in the movable hole (17).

2. A mechanical program lock according to claim 1, characterized in that: The lock body main body (14) comprises a key (4), and the key (4) can drive the lock core (3) to rotate.

3. A switch cabinet, comprising a cabinet body for accommodating a circuit breaker (13), wherein the cabinet body (12) has a middle partition (11), characterized in that: The middle partition (11) is installed with a mechanical program lock as described in any one of claims 1 to 2, and the cabinet (12) is also provided with a driving device for driving the circuit breaker (13) to enter the working position or return to the test position.

4. A switch cabinet according to claim 3, characterized in that: The middle partition plate (11) is provided with a through hole, and the limiting member (6) on the mechanical program lock can move up and down at the through hole to allow or limit the movement of the circuit breaker (13).

5. A method for using the switch cabinet according to claim 3, characterized in that: The method comprises the following steps: starting the mechanical program lock, the limiting member (6) thereon descends, the driving device drives the circuit breaker (13) to enter the working position or return to the test position, and closing the mechanical program lock, the limiting member (6) thereon ascends to limit the movement of the circuit breaker (13).

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