Mine flameproof power box

Abstract

The invention discloses a flameproof power supply box for mining, which comprises a first box, a first cover, a second cover, and a locking device. The first box has a power cavity and an electrical cavity that are independent of each other. The first cover covers the power cavity, and the second cover covers the electrical cavity. The locking device comprises a second box, a cover, a detection component, a connector, and a locking component. The second box is arranged on the first cover, and the detection component is arranged on the side of the cover facing the second box. The connector is arranged in the second box. The connector has a first position and a second position. In the first position, the connector passes through the first box and the first cover and the first box cooperates. In the second position, the connector is separated from the first box. The locking component has a locked state and an unlocked state. In the locked state, the locking component is connected to the connector, and in the unlocked state, the locking component is separated from the connector. The power supply box of the invention has the advantages of simple structure, low cost, high reliability, etc.

Description

Technical Field

[0001] The present invention relates to the field of mining machinery, and in particular to a flameproof power supply box for mining. Background Art

[0002] Gas explosion accidents in coal mines occur frequently, and a large part of them are caused by opening the cover with power on. In recent years, the new standard GB / T3836 stipulates that the power box must be separated into two explosion-proof chambers, namely the main chamber and the power chamber, to reduce the probability of opening the power chamber in the mine.

[0003] In the related art, the alarm device of the power box is not set reasonably, which makes the maintenance of the power box troublesome and cannot fundamentally solve various accidents caused by coal mine personnel mistakenly opening the battery cavity of the flameproof power box underground. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] In the related technology, for example, patent number: CN201420236430.9-An alarm device for preventing electromechanical equipment from opening the cover by mistake, is fixed to a bolt on the cover of the power box through a lock seat, and the key is turned to drive the lock core to rotate, the lock buckle is separated from the lock slot, the protective cover is opened, and the electric shock switch is turned on at the same time. The single-chip contact switch turns on the light-emitting diode and the buzzer, and then gives an alarm. This device controls the alarm device on the box body through the lock seat. When the cover is opened normally by ground maintenance or full-time personnel, the key must also be turned, and the alarm sound is also given at this time. As long as the cover is opened (including misoperation and normal operation), an alarm is given, which is inconvenient to use.

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a power supply box with a simple structure and high safety performance.

[0007] The power box of the embodiment of the present invention comprises: a first box body, wherein the first box body has a power cavity and an electrical cavity which are independent of each other; a first cover plate and a second cover plate, wherein the first cover plate covers the power cavity, and the second cover plate covers the electrical cavity; a locking device, wherein the locking device comprises a second box body, a cover body, a detection component, a connecting piece and a locking component, wherein the second box body is arranged on the first cover plate, and one end of the cover body is rotatably arranged on the second box body, and the detection component is arranged on a side of the cover body facing the second box body, so that when the detection component detects that the cover body is opened, the detection component sends out an alarm; the connecting piece is passed through the second box body and can be rotated relative to the height direction of the second box body. The connector has a first position and a second position. In the first position, the connector passes through the first box body and the first cover plate and cooperates with the first box body so that the first cover plate closes the power cavity. In the second position, the connector is separated from the first box body so that the first cover plate is separated from the first box body. The locking assembly has a locking state and an unlocking state. In the locking state, the locking assembly is connected to the connector so that the connector is locked in the first position. In the unlocking state, the locking assembly is separated from the connector so that the connector can move between the first position and the second position and the second box body can be separated from the first box body.

[0008] The power box of the embodiment of the present invention is provided with a connecting piece and a locking assembly, so that when the locking assembly is in a locked state, the connecting piece is in a first position and cannot be moved, so that the first cover plate cannot be lifted from the first box body; when the locking assembly is in an unlocked state, the connecting piece and the locking assembly are separated, so that the connecting piece is pulled out of the first box body, so that the first cover plate is lifted from the first box body, which can effectively reduce various accidents caused by coal mine personnel mistakenly opening the battery cavity of the flameproof first box body underground, and when ground maintenance is performed above ground or full-time personnel unlock the locking assembly, the locking assembly and the connecting piece can be separated, so that the second box body and the first box body are detached, and the first cover plate of the first box body can be opened normally without triggering the alarm of the detection assembly, thereby improving the maintenance efficiency of the power box.

[0009] In some embodiments, the detection component includes a motion sensor and an audible and visual alarm, and the motion sensor and the audible and visual alarm are both arranged on the side of the cover body facing the first box body, so that when the motion sensor and the audible and visual alarm detect that the cover body is lifted, the audible and visual alarm will sound an alarm.

[0010] In some embodiments, the locking assembly includes: a lock core, which is rotatably inserted into the second housing; a first plate, which is disposed in the second housing and movable along the length direction of the first housing, the lock core cooperates with one end of the first plate so that the lock core rotates to drive the first plate to move along the length direction of the first housing; a sleeve, which is disposed in the second housing and sleeved on the connecting member, the first plate is connected to the sleeve to drive the sleeve to move along the length direction of the first housing, in the locked state, the first plate drives the sleeve to move along the length direction of the first housing so that the inner circumference of the sleeve abuts against the outer circumference of the connecting member so that the connecting member is in the first position, and in the unlocked state, the first plate drives the sleeve to move along the length direction of the first housing so that the inner circumference of the sleeve and the outer circumference of the connecting member are spaced apart in the inner and outer directions so that the connecting member moves between the first position and the second position.

[0011] In some embodiments, the locking assembly also includes a key, which is provided with a lock hole. The end of the lock core away from the first plate can be inserted into the lock hole. A plurality of protrusions are provided in the lock hole. The plurality of protrusions are arranged at intervals along the inner circumference of the lock hole. The lock core is provided with a first groove that cooperates with the protrusion.

[0012] In some embodiments, the end of the lock core facing the first plate is the first end, the end of the first plate facing the lock core is the second end, one of the first end and the second end is provided with a threaded groove, the other of the first end and the second end is provided with a threaded rod, the threaded rod is passed through the threaded groove and cooperates with the threaded groove so that the lock core rotates to drive the connecting member to move along the length direction of the first box.

[0013] In some embodiments, the connecting member includes a first section and a second section connected in sequence, a first through hole is provided on the first cover plate, a second through hole is provided on the first box body, the first through hole and the second through hole are relatively arranged along the height direction of the first box body, the first section is inserted into the first through hole and the second through hole, and the first section and the second through hole are threadedly matched, and the sleeve is sleeved on the outer circumferential surface of the second section.

[0014] In some embodiments, at least one of the outer circumferential surface of the second section or the inner circumferential surface of the sleeve is provided with threads.

[0015] In some embodiments, the sleeve has a second groove extending inward in the inner-outer direction, the first plate is provided with a third through hole penetrating the first plate, the inner diameter of the third through hole is larger than the outer diameter of the sleeve, so that the sleeve can be inserted into the third through hole, and the width of the second groove is larger than the thickness of the first plate, so that the sleeve can be inserted into the second groove so that the first plate can be installed on the sleeve.

[0016] In some embodiments, in the unlocked state, in a projection plane orthogonal to the height direction of the second box body, a projection plane of the sleeve is located in the third through hole.

[0017] In some embodiments, the mining explosion-proof power box also includes a lock, which is arranged on the inner circumferential surface of the second box body and is located on a side away from the connection point between the cover body and the second box body, and the lock cooperates with the cover body so that the cover body closes the second box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a mine flameproof power supply box according to an embodiment of the present invention.

[0019] Figure 2 It is a structural schematic diagram of a locking device of a mine flameproof power supply box according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic structural diagram of a connecting piece of a locking device of a mine flameproof power supply box according to an embodiment of the present invention.

[0021] Figure 4 It is a schematic structural diagram of a connecting piece of a locking device of a mine flameproof power supply box according to an embodiment of the present invention.

[0022] Figure 5 yes Figure 4 Front view of.

[0023] Figure 6 It is a schematic structural diagram of a sleeve of a locking device of a mine flameproof power box according to an embodiment of the present invention.

[0024] Figure 7 It is a schematic structural diagram of a lock core of a locking device of a mine flameproof power supply box according to an embodiment of the present invention.

[0025] Figure 8 It is a right view of the lock core of the locking device of the mining flameproof power box according to the embodiment of the present invention.

[0026] Fig. 9 It is a schematic structural diagram of a key of a locking device of a mine flameproof power supply box according to an embodiment of the present invention.

[0027] Fig.10It is a left view of the key of the locking device of the mining flameproof power box according to the embodiment of the present invention.

[0028] Fig.11 It is a schematic diagram of the interior of the first box body of the mining flameproof power box according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Power Box 100

[0031] Locking device 10;

[0032] First box body 1; second through hole 11; power cavity 12; electrical cavity 13; power supply 14

[0033] First cover plate 2; first through hole 21; second cover plate 22;

[0034] Second box body 3; cover body 31;

[0035] Connecting member 4; first section 41; second section 42;

[0036] Locking assembly 5;

[0037] Lock core 51; thread groove 511; first groove 512; first plate 52; third through hole 521; threaded rod 522; sleeve 53; second groove 531; key 54; lock hole 541; protrusion 542;

[0038] Detection component 6; motion sensor 61; sound and light alarm 62; lock buckle 7. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] The following describes a mine flameproof power supply box according to an embodiment of the present invention with reference to the accompanying drawings.

[0041] like Figure 1-11 As shown, the flameproof power supply box for mining according to an embodiment of the present invention includes a first box body 1, a first cover plate 2, a second cover plate 22 and a locking device 10.

[0042] The first housing 1 has a power supply chamber 12 and an electrical chamber 13 which are independent of each other. Fig.11 As shown, the electrical cavity 12 is arranged on the left side of the power cavity. The electrical cavity 12 is provided with electrical components (such as a controller and a circuit board). A power supply 14 is arranged in the power cavity 12. The power supply 14 is connected to the electrical components to supply power to the electrical components.

[0043] The first cover plate 2 covers the power cavity 12, and the second cover plate 22 covers the electrical cavity 13. Fig.11 As shown, the left side of the first cover plate 2 is hinged on the side of the power cavity 12, so that the power cavity 12 can be opened by lifting the right side of the first cover plate 2 to inspect, debug and maintain the power supply 14 in the power cavity 12, and the right side of the second cover plate 22 is hinged on the side of the electrical cavity 13, so that the electrical cavity 13 can be opened by lifting the left side of the second cover plate 22 to inspect the electrical components in the electrical cavity 13.

[0044] like Figure 1 As shown, the locking device includes a second box body 3, a connecting piece 4, a locking assembly 5, a cover body 31 and a detection assembly 6.

[0045] The second box body 3 is arranged on the first cover plate 2. Specifically, Figure 1 As shown, the second box body 3 is detachably mounted on the first cover plate 2 of the first box body, and can be lifted along with the first cover plate 2 or be mounted on the first box body 1 .

[0046] One end of the cover 31 is rotatably disposed on the second box 3. Specifically, Figure 1 As shown, one side of the cover 31 is hinged on the side of the second box body 3 , so as to cover the second box body 3 or be lifted up from the second box body 3 .

[0047] The detection component 6 is disposed on the side of the cover 31 facing the second box 3, so that when the detection component 6 detects that the cover 31 is opened, the detection component 6 issues an alarm. Figure 1 As shown, the locking device 10 also includes a detection component 6 and a controller (not shown in the figure). The detection component 6 and the controller are both arranged at the lower end of the cover body 31. The detection component 6 is connected to the power supply 14 through the controller. When the detection component 6 detects that the cover body 31 is opened, the detection component 6 transmits a signal to the controller and sounds an alarm, and the controller cuts off the power supply 14 in the power cavity 12.

[0048] The connecting member 4 is disposed in the second box body 3 and is arranged in a height direction relative to the second box body 3 (eg Figure 1 The connecting member 4 has a first position and a second position. In the first position, the connecting member 4 passes through the second box body 3 and the first cover plate 2 and cooperates with the first box body 1, so that the first cover plate 2 closes the first box body 1. In the second position, the connecting member 4 is separated from the first box body 1, so that the first cover plate 2 is separated from the first box body 1. Specifically, as Figure 1As shown, the upper part of the connector 4 is inserted into the second box body 3, and the connector 4 can move in the up and down directions. In the first position, the lower part of the connector 4 passes through the second box body 3 and the first cover plate 2 in sequence and is inserted into the first box body 1, so that the first cover plate 2 is fixed on the first box body 1 to prevent the operator from accidentally opening the first box body 1 when in the mine, thereby ensuring the safety performance of the battery box. In the second position, the connector 4 moves upward to separate the connector 4 from the first box body 1, so that the first cover plate 2 can be opened to replace and repair the first box body 1.

[0049] In the locked state, the locking assembly is connected to the connecting member 4, and the connecting member 4 is locked in the first position. In the unlocked state, the locking assembly 5 is separated from the connecting member 4, and the connecting member 4 can move between the first position and the second position to separate the second box body 3 from the first box body 1. Specifically, Figure 1 As shown, in the locked state, the first box body 1 is under the mine and must not be opened. The locking assembly 5 is connected to the connecting member 4, so that the connecting member 4 is in the first position, preventing the connecting member 4 from moving from the first position, further reducing the probability of the operator mistakenly opening the first cover 2 under the mine. In the unlocked state, the first box body 1 is above the mine, and the power supply in the first box body 1 can be inspected or charged. The locking assembly 5 is separated from the connecting member 4, so that the connecting member 4 can be moved between the first position and the second position to open the first cover 2, and the second box body 3 can be directly removed from the first box body 1.

[0050] According to the locking device 10 of the embodiment of the present invention, a connecting member 4 and a locking assembly 5 are provided. When the locking assembly 5 is in a locked state, the connecting member 4 is in a first position and cannot be moved, so that the first cover plate 2 cannot be lifted from the first box body 1. When the locking assembly 5 is in an unlocked state, the connecting member 4 and the locking assembly 5 are separated, so that the connecting member 4 is pulled out of the first box body 1, so that the first cover plate 2 is lifted from the first box body 1, so that maintenance personnel can repair the power supply in the first box body 1 or take out the power supply for charging. Therefore, through the cooperation between the connecting member 4 and the locking assembly 5, It serves as a double insurance for the first box body 1, thereby effectively reducing various accidents caused by coal mine personnel accidentally opening the flameproof first box body 1 underground, and improving the safety performance of the first box body underground. In addition, in the unlocked state, the second box body 3 can be removed from the first box body 1, so that when ground maintenance is carried out on the well or dedicated personnel unlock the locking component 3, the locking component 3 and the connecting piece 4 can be separated, so that the second box body 3 and the first box body 1 are separated, and the first cover plate 2 of the first box body 1 can be opened normally without triggering the alarm of the detection component 6, thereby improving the maintenance efficiency of the first box body 1.

[0051] In some embodiments, the detection assembly 6 includes a motion sensor 61 and an audible and visual alarm 62, both of which are disposed on the side of the cover 31 facing the second box 3, so that when the motion sensor 61 and the audible and visual alarm 62 detect that the cover 31 is opened, the audible and visual alarm 62 sounds an alarm. Figure 1 As shown, the motion sensor 61 and the sound and light alarm 62 are both arranged on the lower end surface of the cover body 31 and connected to the controller. When the worker opens the cover body 31 in the mine, the motion sensor 61 transmits a signal to the controller, and the controller immediately cuts off the power supply in the first box body 1. At the same time, when the sound and light alarm 62 detects a change in light, the sound and light alarm 62 sounds an alarm. Therefore, through the dual detection of the motion sensor 61 and the sound and light alarm 62, the safety performance of the first box body in the mine is improved.

[0052] It can be understood that the alarm issued by the sound and light alarm 62 can be clearly distinguished from other alarm sounds in the mine. For example, when the sound and light alarm 62 detects a change in the light in the second box 3, the sound and light alarm 62 issues a prompt sound such as "It is strictly forbidden to open the cover underground, please pay attention to safety", thereby reminding the operator to be sensitive to sound.

[0053] In some embodiments, the locking assembly 5 includes a lock core 51, a first plate 52, and a sleeve 53.

[0054] The lock core 51 is rotatably disposed in the second box body 3. The first plate 52 is disposed in the second box body 3 and along the length direction of the first box body 1 (eg Figure 1 The lock core 51 is movable in the left and right directions as shown, and the lock core 51 cooperates with one end of the first plate 52 so that the lock core 51 rotates to drive the first plate 52 to move along the length direction of the first box body. Figure 1 As shown, the right end of the first plate 52 cooperates with the lock core 51, and when the lock core 51 rotates, the first plate 52 can be driven to move in the left and right directions.

[0055] The sleeve 53 is arranged in the second box body 3 and is sleeved on the connecting member 4. The first plate 52 is connected to the sleeve 53 to drive the sleeve 53 to move along the length direction of the first box body 1. When the locking assembly 5 is in a locked state, the first plate 52 drives the inner circumference of the sleeve 53 to abut against the outer circumference of the connecting member 4 so that the connecting member 4 is in the first position. When the locking assembly 5 is in an unlocked state, the inner circumference of the sleeve 53 and the outer circumference of the connecting member 4 are spaced apart in the inner and outer directions so that the connecting member 4 can move between the first position and the second position.

[0056] Specifically, Figure 1As shown, the sleeve 53 is arranged in the second box body 3 and sleeved on the outer circumferential surface of the connecting member 4. When the locking assembly 5 is in the locked state, the lock core 51 rotates clockwise to drive the first plate 52 to move leftward, thereby driving the sleeve 53 to move leftward, so that the inner circumferential surface of the sleeve 53 abuts against the outer circumferential surface of the sleeve 53, so that the connecting member 4 is fixed in the first position, so that when the locking assembly 5 is locked, the underground mine operator cannot move the connecting member 4 to fix the first cover plate 2 on the first box body 1. When the locking assembly 5 is in the unlocked state, the lock core 51 rotates clockwise to drive the first plate 52 to move leftward, thereby driving the sleeve 53 to move leftward, so that the inner circumferential surface of the sleeve 53 abuts against the outer circumferential surface of the sleeve 53, so that the connecting member 4 is fixed in the first position. 51 rotates counterclockwise to drive the first plate 52 to move rightward, thereby causing the sleeve 53 to move rightward, so that the inner circumference of the sleeve 53 and the outer circumference of the connecting piece 4 are spaced apart along the length direction of the first box body 1, so that the sleeve 53 and the connecting piece 4 are disengaged, and the operator can move the connecting piece 4 upward to disengage from the first box body 1 to open the first cover plate 2, or the operator moves the connecting piece 4 downward to insert the connecting piece 4 into the first cover plate 2 and the first box body 1 to fix the first cover plate 2 on the first box body 1, thereby closing the power supply cavity 12.

[0057] In some embodiments, the locking assembly 5 also includes a key 54, which is provided with a lock hole 541. The end of the lock core 51 away from the first plate can be inserted into the lock hole 541. A plurality of protrusions 542 are provided in the lock hole 541. The plurality of protrusions 542 are arranged at intervals along the inner circumference of the lock hole 541. A first groove 511 cooperating with the protrusion 542 is provided on the lock core 51.

[0058] Specifically, Figure 7-10 As shown, the lock hole 541 is cylindrical, and there are three protrusions 542 (3 protrusions 542 shown in the figure), two of which are arranged on the inner circumferential surface of the lock hole 541 and are located at the upper end of the lock hole 541 and are arranged at intervals, and the other protrusion 542 is arranged on the inner circumferential surface of the lock hole 541 and is located at the lower end of the lock hole 541. The right end of the lock core 51 is cylindrical, and the right end of the lock core 51 is provided with a first groove 512 matching with the protrusion 542. When the right end of the lock core 51 is penetrated into the lock hole 541, the protrusion 542 is penetrated into the first groove 512, so that the lock core 51 is driven to rotate by turning the key 54. Therefore, a specific key 54 is required to open the locking assembly 5, thereby further ensuring the safety performance of the locking device 10 and reducing the probability of opening in the mine.

[0059] In some embodiments, the end of the lock core 51 facing the first plate 52 is the first end, the end of the first plate 52 facing the lock core 51 is the second end, one of the first end and the second end is provided with a threaded groove 511, and the other of the first end and the second end is provided with a threaded rod 522, the threaded rod 522 is inserted into the threaded groove and cooperates with the threaded groove 511, so that the lock core 51 rotates to drive the connecting member 4 to move along the length direction of the first box body 1. Specifically, as Figure 4 , 5 and Fig. 9 As shown, the left end of the lock core 51 is the first end, and the right end of the first plate 52 is the second end. The threaded groove 511 and the threaded rod 522 can be set according to actual conditions. For example, the left end of the lock core 51 is provided with a threaded groove 511, and the right end of the first plate 52 is provided with a threaded rod 522, or the left end of the lock core 51 is provided with a threaded rod 522, and the right end of the first plate 52 is provided with a threaded groove 511. The threaded rod 522 can be inserted into the threaded groove 511 and threadably matched with the threaded groove 511, so that when the lock core 51 rotates, the first plate 52 can be driven to move in the left and right directions.

[0060] In some embodiments, the connecting member 4 includes a first section 41 and a second section 42 connected in sequence, a first through hole 21 is provided on the first cover plate 2, and a second through hole 11 is provided on the first box body 1. The first through hole 21 and the second through hole 11 are relatively arranged along the height direction of the first box body 1. When the connecting member 4 is in the first position, the first section 41 is inserted into the first through hole 21 and the second through hole 11, and the first section 41 and the first through hole 21 and the second through hole 11 are threadedly matched, and the sleeve 53 is sleeved on the outer circumferential surface of the second section 42, and at least one of the outer circumferential surface of the second section 42 or the inner circumferential surface of the sleeve 53 is threaded.

[0061] Specifically, Figure 3 As shown, the first section 41 is arranged below the second section 42 and connected to the second section 42, the first section 41 is provided with a first thread on its outer circumference, the second section 42 is provided with a second thread on its outer circumference, the first cover plate 2 is provided with a first through hole 21 penetrating the first cover plate 2, the first box body is provided with a second through hole 11, the first through hole 21 and the second through hole 11 are arranged opposite to each other, and at least a portion of the inner circumference of the first through hole 21 and at least a portion of the inner circumference of the second through hole 11 are provided with a third thread matching the first thread, when the connector 4 is in the first position, The first section 41 of the connecting member 4 is respectively inserted into the first through hole 21 and the second through hole 11, and the first thread cooperates with the third thread, thereby, the first cover plate 2 is fixed to the first box body through the connecting member 4, and when the locking assembly 5 is in a locked state, the inner circumference of the sleeve 53 and the inner circumference of the sleeve 53 are abutted against each other, thereby, the friction between the outer circumference of the connecting member 4 and the inner circumference of the sleeve 53 is increased through the thread, so that when the locking assembly 5 is in the locked state, the connecting member 4 is prevented from rotating, thereby further improving the safety performance of the locking device 10.

[0062] In some embodiments, the sleeve 53 has a second groove 531 extending inwardly in the inner and outer directions, the first plate 52 is provided with a third through hole 521 penetrating the first plate 52, the inner diameter of the third through hole 521 is larger than the outer diameter of the sleeve 53, so that the sleeve 53 is inserted into the third through hole 521, and the width of the second groove 531 is larger than the thickness of the first plate 52, so that the sleeve 53 is inserted into the second groove 531 so that the first plate 52 is installed on the sleeve 53. Specifically, as Figure 4 and Figure 6 As shown, a second groove 531 extending along the circumference of the sleeve 53 is provided in the middle portion of the sleeve 53, and a third through hole 521 penetrating the first plate 52 along the up-down direction is provided on the first plate 52, and the inner diameter of the third through hole 521 is larger than the outer diameter of the sleeve 53, so that the sleeve 53 is inserted into the third through hole 521, and the thickness of the second groove 531 (i.e., the length of the second groove 531 in the up-down direction) is larger than the thickness of the first plate 52 (i.e., the length of the first plate 52 in the up-down direction), thereby, the first plate 52 can be installed in the second groove 531, and when the locking assembly 5 is in a locked state, a part of the first plate 52 can be located in the second groove 531, so that the first plate 52 is restricted in the second groove 531, and the first plate 52 is prevented from sliding on the outer surface of the sleeve 53, thereby making the locking device 10 more reasonably arranged.

[0063] When the locking assembly 5 is in the unlocked state, in a projection plane orthogonal to the up-down direction, the projection plane of the sleeve 52 is located in the third through hole 521 , so that the second box body 3 is separated from the first box body 1 . Specifically, when the locking assembly 5 is in a locked state, the first plate 52 is inserted into the second groove 531 and abuts against the inner circumference of the second groove 531, driving the inner circumference of the sleeve 53 and the outer circumference of the connecting member 4 to abut against each other. When the locking assembly 5 is in an unlocked state, the axis of the third through hole 521 of the first plate 52 and the axis of the connecting member 4 are colinear, and the inner circumference of the third through hole 521 and the outer circumference of the connecting member 4 are spaced apart along the length direction of the first box body, so that the second box body 3, the locking assembly 5 and the first plate 52 can be removed from the first box body 1, and the connecting member 4 is still in the first position. Therefore, when the first cover plate is opened normally during ground maintenance or by full-time personnel, it is also necessary to rotate the lock cylinder 51 counterclockwise to disengage the first plate 52 and the sleeve 53, and then remove the connecting member 4 from the first box body 1. Therefore, the sound and light alarm 62 can be prevented from sounding an alarm during normal maintenance of the first box body 1. Preferably, when the locking assembly 5 is in the unlocked state, the axis of the third through hole 521 and the axis of the sleeve 52 are collinear.

[0064] In some embodiments, the locking device 10 further includes a lock buckle 7, which is disposed on the inner circumference of the second box body 3 and is located on a side away from the connection point between the cover body 31 and the second box body 3. The lock buckle 7 cooperates with the cover body 31 so that the cover body 31 closes the second box body 3. Specifically, Figure 1-2 As shown, the right end of the cover body 31 is hinged to the second box body 3, and the lock 7 is arranged in the second box body 3 and located on the left side surface of the second box body 3. Therefore, the cover body 31 can be fixed on the second box body 3 through the lock 7, thereby preliminarily preventing the operator from accidentally opening the cover body 31 in the mine.

[0065] It is understandable that, in order to adapt to the humid environment underground, the first box body 1, the first cover plate 2, the second cover plate 22 and the locking device 10 are all made of stainless steel, thereby preventing the mine flameproof power box 100 from being corroded underground and extending the service life of the mine flameproof power box.

[0066] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A flameproof power box for mining, characterized in that: include: A first box body, wherein the first box body has a power supply cavity and an electrical appliance cavity which are independent of each other; a first cover plate and a second cover plate, wherein the first cover plate covers the power cavity, and the second cover plate covers the electrical cavity; The locking device comprises a second box body, a cover body, a detection component, a connecting piece and a locking component. The second box is disposed on the first cover plate, one end of the cover is rotatably disposed on the second box, and the detection component is disposed on a side of the cover facing the second box, so that when the detection component detects that the cover is opened, the detection component issues an alarm; The connecting member is disposed in the second box body and is movable in a height direction relative to the second box body. The connecting member has a first position and a second position. In the first position, the connecting member passes through the first box body and the first cover plate and the first box body cooperates so that the first cover plate closes the power cavity. In the second position, the connecting member is separated from the first box body so that the first cover plate is separated from the first box body. The locking assembly has a locking state and an unlocking state. In the locking state, the locking assembly is connected to the connecting member so that the connecting member is locked in the first position. In the unlocking state, the locking assembly is separated from the connecting member so that the connecting member can move between the first position and the second position and the second box can be separated from the first box, and the first cover of the first box can be opened without triggering the alarm of the detection assembly.

2. The flameproof power supply box for mining according to claim 1, characterized in that: The detection component includes a motion sensor and an audible and visual alarm, and the motion sensor and the audible and visual alarm are both arranged on the side of the cover body facing the first box body, so that when the motion sensor and the audible and visual alarm detect that the cover body is opened, the audible and visual alarm sounds an alarm.

3. The flameproof power supply box for mining according to claim 1, characterized in that: The locking assembly comprises: A lock core, the lock core is rotatably disposed in the second housing; a first plate, the first plate being disposed in the second box and movable along the length direction of the first box, the lock core being matched with one end of the first plate so that the lock core rotates to drive the first plate to move along the length direction of the first box; A sleeve, wherein the sleeve is arranged in the second housing and sleeved on the connecting member, the first plate is connected to the sleeve to drive the sleeve to move along the length direction of the first housing, in the locked state, the first plate drives the sleeve to move along the length direction of the first housing so that the inner circumference of the sleeve abuts against the outer circumference of the connecting member so that the connecting member is in the first position, and in the unlocked state, the first plate drives the sleeve to move along the length direction of the first housing so that the inner circumference of the sleeve and the outer circumference of the connecting member are spaced apart in the inner and outer directions so that the connecting member moves between the first position and the second position.

4. The flameproof power supply box for mining according to claim 3, characterized in that: The locking assembly also includes a key, which is provided with a lock hole. The end of the lock core away from the first plate can be inserted into the lock hole. A plurality of protrusions are provided in the lock hole. The plurality of protrusions are arranged at intervals along the inner circumference of the lock hole. The lock core is provided with a first groove that cooperates with the protrusions.

5. The flameproof power supply box for mining according to claim 3, characterized in that: One end of the lock core facing the first plate is the first end, and one end of the first plate facing the lock core is the second end. One of the first end and the second end is provided with a threaded groove, and the other of the first end and the second end is provided with a threaded rod. The threaded rod is inserted into the threaded groove and cooperates with the threaded groove so that the lock core rotates to drive the connecting member to move along the length direction of the first box.

6. The flameproof power supply box for mining according to claim 5, characterized in that: The connecting member includes a first section and a second section connected in sequence, a first through hole is provided on the first cover plate, a second through hole is provided on the first box body, the first through hole and the second through hole are relatively arranged along the height direction of the first box body, the first section is penetrated into the first through hole and the second through hole, and the first section and the second through hole are threadedly matched, and the sleeve is sleeved on the outer circumferential surface of the second section.

7. The flameproof power supply box for mining according to claim 6, characterized in that: At least one of the outer circumferential surface of the second section or the inner circumferential surface of the sleeve is provided with threads.

8. The flameproof power supply box for mining according to claim 3, characterized in that: The sleeve has a second groove extending inwardly along the inner-outer direction, the first plate is provided with a third through hole penetrating the first plate, the inner diameter of the third through hole is larger than the outer diameter of the sleeve, so that the sleeve can be inserted into the third through hole, and the width of the second groove is larger than the thickness of the first plate, so that the sleeve can be inserted into the second groove so that the first plate can be installed on the sleeve.

9. The flameproof power supply box for mining according to claim 8, characterized in that: In the unlocked state, in a projection plane orthogonal to the height direction of the second box body, the projection plane of the sleeve is located in the third through hole.

10. The flameproof power supply box for mining according to claim 2, characterized in that: It also includes a lock buckle, which is arranged on the inner circumference of the second box body and is located on a side away from the connection point between the cover body and the second box body. The lock buckle cooperates with the cover body so that the cover body closes the second box body.

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