Novel motor junction box

Abstract

The utility model relates to the field of motor junction boxes, in particular to a novel motor junction box, which comprises an outer shell and an upper cover positioned at the top of the outer shell, a plurality of binding posts are arranged in the outer shell, a bulge extending downwards is arranged on the side surface of the front end of the upper cover, and one end of the upper cover is hinged with the outer shell; a locking device is arranged on the side wall of the outer portion of the outer shell. When the upper cover is closed, the upper cover is locked through cooperation of the locking device and the protrusion. The utility model provides a novel motor junction box, which can ensure that the motor junction box is not opened abnormally in the operation process of a motor, avoids the occurrence of accidents, and ensures the personal safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor terminal boxes, and particularly relates to a new type of motor terminal box. Background Art

[0002] The motor terminal box is generally fixed to the motor body by bolts. Most of the currently used motor terminal boxes do not have necessary protection measures, posing potential safety hazards. Especially for high-voltage motors, if the terminal box is damaged or abnormally opened during the operation of the motor, it may cause safety accidents. Summary of the Utility Model

[0003] In order to solve the problem that most of the existing motor terminal boxes do not have necessary protection measures, and may cause accidents and cannot ensure the safety of staff when damaged or abnormally opened during the operation of the motor, the utility model provides a new type of motor terminal box, which can ensure that the motor terminal box will not be abnormally opened during the operation of the motor, avoid the occurrence of accidents, and guarantee personal safety.

[0004] The technical solution of the utility model is as follows:

[0005] A new type of motor terminal box includes an outer shell and an upper cover located at the top of the outer shell. The outer shell is internally provided with a plurality of terminal posts. The front side of the upper cover has a downwardly extending protrusion, and one end of the upper cover is hinged to the outer shell;

[0006] A locking device is arranged on the side wall of the outer shell. When the upper cover is closed, it is locked in cooperation with the protrusion through the locking device;

[0007] A travel switch for detecting the opening and closing state of the upper cover is fixed inside the outer shell.

[0008] Preferably, the outer shell is connected with an air inlet pipe, and a compressed air filter and a flow control switch are arranged on the air inlet pipe.

[0009] Preferably, the locking device is an electromagnetic lock.

[0010] Preferably, a lock hole for cooperating with the electromagnetic lock is opened on the protrusion.

[0011] Preferably, the air inlet pipe is connected with an air pump. <s

[0012] Preferably, a temperature sensor is arranged on the terminal post.

[0013] Preferably, a pair of hinges is arranged at the upper end of the side wall at the rear of the outer shell, and the upper cover is hinged to the outer shell through the hinges.

[0014] Preferably, a pair of hydraulic support rods are arranged inside the outer shell. One end of each hydraulic support rod is hinged to the inner bottom end of the outer shell, and the other end is hinged to the front end of the upper cover.

[0015] Preferably, the outer shell is square.

[0016] Preferably, threaded holes are provided around the upper cover, and threaded holes matching the threaded holes of the upper cover are provided around the inner part of the outer shell.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) An electromagnetic lock is added to the motor junction box in the design of the utility model. The electromagnetic lock is interlocked with the main power distribution circuit. If the main circuit is powered on, the electromagnetic lock will lock the upper cover and it cannot be opened.

[0019] (2) In the embodiment of the utility model, by designing to add a travel switch in the motor junction box, the contacts of the travel switch are interlocked with the closing circuit. When the motor junction box is not fully closed, the circuit breaker cannot be closed; during the operation of the motor, if the motor junction box is abnormally opened, the contact signal of the travel switch enters the power distribution cabinet for alarm or interlocked tripping.

[0020] (3) In the embodiment of the utility model, dry compressed air passes through the motor junction box, and positive-pressure compressed air always exists in the junction box. The compressed air is detected by a flow control switch. If the flow rate reaches the set value, it indicates that the junction box is damaged and an alarm is given in time.

[0021] (4) In the embodiment of the utility model, by designing to install a temperature sensor on the terminal post in the junction box to measure the temperature of the motor terminal post, when it is found that the terminal post is overheated, an alarm is given in time.

[0022] (5) In the embodiment of the utility model, by designing to install two hinges on the upper end face of the motor junction box to realize the hinge connection between the upper cover and the outer shell, and two hydraulic support rods are installed inside the junction box, which has a buffering effect. When the bolts of the junction box are removed, the motor junction box can be directly opened upward to avoid accidental dropping of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view of an embodiment of the utility model;

[0024] Figure 2 It is a left side view of an embodiment of the utility model;

[0025] Figure 3 It is a left side view (opened state) of an embodiment of the utility model;

[0026] Figure 4This is the right side view of the embodiment of the present utility model;

[0027] In the figure: 1 - outer housing, 2 - upper cover, 3 - electromagnetic lock, 4 - protrusion, 5 - intake pipe, 6 - compressed air filter, 7 - flow control switch, 8 - terminal, 9 - temperature sensor, 10 - hinge, 11 - travel switch, 12 - hydraulic support rod, 13 - threaded hole. Specific embodiments

[0028] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figure 1-2 , a new type of motor junction box, including an outer housing 1 and an upper cover 2 located on the top of the outer housing 1. The outer housing 1 is provided with a plurality of terminals 8 inside. The front side of the upper cover 2 has a downwardly extending protrusion 4, and one end of the upper cover 2 is hingedly connected to the outer housing 1;

[0030] A locking device is provided on the side wall of the outer housing 1. When the upper cover 2 is closed, it is locked in cooperation with the protrusion through the locking device;

[0031] A travel switch 11 for controlling the stroke of the upper cover and limit protection is fixed inside the outer housing 1.

[0032] Specifically, the travel switch 11 can adopt the Omron WLD28 - N travel switch; the travel switch 11 is electrically connected to an external power distribution cabinet. For the above - mentioned travel switch 11, its contacts are interlocked with the closing circuit. When the upper cover of the motor junction box is not fully closed, the circuit breaker cannot be closed; during the operation of the motor, if the upper cover is abnormally opened, the contact signal of the travel switch 11 enters the power distribution cabinet for alarm or interlocking tripping.

[0033] See Figure 1 and Figure 4 , in a preferred embodiment of the present utility model, the locking device is an electromagnetic lock 3, but not limited thereto, and a lock hole matching the electromagnetic lock 3 is provided on the protrusion 4; an electromagnetic lock 3 is added to the motor junction box. The electromagnetic lock 3 is interlocked with the main power distribution circuit. If the main circuit is powered on, the lock head of the electromagnetic lock 3 extends into the lock hole to lock the upper cover 2, making the upper cover unable to be opened. Specifically, the electromagnetic lock can adopt the DSW1 - Z(TH) electromagnetic lock, but not limited thereto.

[0034] In an embodiment of the present utility model, threaded holes 13 are provided around the upper cover 2, and screw holes (not shown in the figure) matching the threaded holes 13 of the upper cover 2 are provided around the inside of the outer housing 1. After the electromagnetic lock is locked, the upper cover is further locked by bolts to improve safety.

[0035] See Figure 1, in an embodiment of the present utility model, an air inlet pipe 5 is communicated with the outer casing 1, and a compressed air filter 6 is arranged on the air inlet pipe 5, and the air entering from the outside can be dried and compressed through the compressed air filter 6;

[0036] See Figure 1 , a flow control switch 7 is also arranged on the air inlet pipe 5; continuously introduce dried compressed air into the outer casing 1, and the compressed air is detected by the flow control switch. If the flow rate reaches the set value, it indicates that the junction box is damaged and an alarm is given in time; the flow control switch can be a FESTO PF2A series flow switch, but is not limited thereto.

[0037] Further, the air inlet pipe 5 is communicated with an air pump, and air is input through the air pump.

[0038] See Figure 1 , in an embodiment of the present utility model, a temperature sensor 9 is arranged on the terminal post 8. Specifically, the temperature sensor 9 can be a wireless temperature measurement sensor ATE400; install the temperature sensor 9 on the terminal post 8 in the outer casing 1 to detect the temperature of the terminal post 8 of the motor. If it is found that the terminal post is overheated, an alarm can be given in time.

[0039] See Figure 1-4 , in an embodiment of the present utility model, a pair of hinges 10 are arranged at the upper end of the side wall at the rear of the outer casing 1, and the upper cover 2 is hinged to the outer casing 1 through the hinges 10; by designing and installing two hinges 10 on the rear side of the outer casing 1, the hinged connection between the upper cover 2 and the outer casing 1 is realized.

[0040] See Figure 2-4 , in an embodiment of the present utility model, a pair of hydraulic support rods 12 are arranged inside the outer casing 1. One end of the hydraulic support rod 12 is hingedly connected to the inner bottom end of the outer casing 1, and the other end is hingedly connected to the front end of the upper cover 2; the hydraulic support rod 12 plays a buffering role when the upper cover is closed.

[0041] In an embodiment of the present utility model, the outer casing 1 is square.

[0042] The present utility model can prevent maintenance personnel from opening the junction box under live conditions, adding a safety guarantee for maintenance personnel.

[0043] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A new type of motor terminal box, characterized in that, It includes a housing body and an upper cover located at the top of the housing body. There are several terminal posts inside the housing body. The front side of the upper cover has a downward-extending protrusion, and one end of the upper cover is hinged to the housing body; A locking device is provided on the side wall outside the housing body. When the upper cover is closed, it is locked in cooperation with the protrusion through the locking device; A travel switch for controlling the travel of the upper cover and limit protection is fixed inside the housing body.

2. The novel motor terminal box according to claim 1, characterized in that, An air inlet pipe is connected to the housing body, and a compressed air filter and a flow control switch are provided on the air inlet pipe.

3. A novel motor terminal box according to claim 2, characterized in that, The air inlet pipe is connected to an air pump.

4. A novel motor junction box according to claim 1, characterized in that, The locking device is an electromagnetic lock.

5. A novel motor junction box according to claim 4, characterized in that, A lock hole for cooperating with the electromagnetic lock is provided on the protrusion.

6. The novel motor terminal box according to claim 1, wherein A temperature sensor is provided on the terminal post.

7. A novel motor junction box according to claim 1, characterized in that, A pair of hinges is provided at the upper end of the side wall at the rear of the housing body, and the upper cover is hinged to the housing body through the hinges.

8. A novel motor junction box according to claim 1, characterized in that, A pair of hydraulic support rods is provided inside the housing body. One end of the hydraulic support rod is hinged to the inner bottom end of the housing body, and the other end is hinged to the front end of the upper cover.

9. A novel motor junction box according to claim 1, characterized in that, The housing body is square.

10. A novel motor junction box according to claim 1, characterized in that, Threaded holes are provided around the upper cover, and threaded holes for cooperating with the threaded holes of the upper cover are provided around the inside of the housing body.

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