CN209949663U - Device for fastening explosion-proof electrical equipment cavity - Google Patents
Device for fastening explosion-proof electrical equipment cavity Download PDFInfo
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- CN209949663U CN209949663U CN201920218011.5U CN201920218011U CN209949663U CN 209949663 U CN209949663 U CN 209949663U CN 201920218011 U CN201920218011 U CN 201920218011U CN 209949663 U CN209949663 U CN 209949663U
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Abstract
The utility model discloses a method and device for fastening explosion-proof electrical equipment cavity, the utility model discloses a device for fastening explosion-proof electrical equipment cavity, include: the equipment cover plate is used for sealing the electrical equipment cavity; a fastening bolt fastening the cover plate to the electrical equipment cavity; a locking mechanism that locks the fastening bolt; a safety guard mechanism securing the locking mechanism for preventing the locking mechanism from being removed at will.
Description
Technical Field
The utility model relates to an explosion-proof technical field of explosive environment, in particular to a device for fastening explosion-proof electrical equipment cavity.
Background
The electrical equipment used in explosive environment has explosion-proof performance, the fastening method of the cover plate of the wiring cavity of the electrical equipment generally adopts bolts for fixing, the screw holes of the cover plate of the wiring cavity are divided into a non-retainer type, a retainer type and a counter sink type, no matter which way, an operator can open the cover plate of the wiring cavity without permission to carry out live-line work, and the solution generally comprises the following steps: install warning mark additional on electrical equipment: "power off before uncovering", "strictly forbid live working", etc.
Disclosure of Invention
The utility model aims at providing a device for fastening explosion-proof electrical equipment cavity, through locking mechanical system and safety protection mechanism, the difficult technological effect of opening of apron that reaches explosion electrical equipment can conveniently install parts such as instrument and meter, sensor at explosion-proof equipment fastening bolt head simultaneously, supplies the monitoring to use.
The utility model provides a device for fastening explosion-proof electrical equipment cavity includes:
the equipment cover plate is used for sealing the electrical equipment cavity;
a fastening bolt fastening the cover plate to the electrical equipment cavity;
it is characterized by also comprising:
a locking mechanism that locks the fastening bolt; and
a safety guard mechanism securing the locking mechanism for preventing the locking mechanism from being removed at will or for connection with an external device.
According to a first embodiment of the present invention, the fastening bolt is an outer (inner) hexagonal fastening bolt installed into a counter bore of the cover plate; the locking mechanism covers the outer (inner) hexagonal fastening bolt and includes: the slotted pipe sleeve is arranged in the counter bore and is provided with an inner conical surface; the lower end of the locking screw penetrating through the slotted pipe sleeve is provided with a conical part and is used for propping open the slotted pipe sleeve through interaction with the inner conical surface of the slotted pipe sleeve so that the outer surface of the slotted pipe sleeve and the surface of the counter bore are subjected to friction self-locking; the compression nut is positioned at the upper end of the slotted pipe sleeve and is in threaded connection with the locking screw; the safety protection mechanism comprises: a backup nut for preventing the compression nut from loosening and threadedly connecting the locking screw; and a connection opening which is arranged on the head part of the locking screw and is internally provided with a connection thread.
According to a second embodiment of the present invention, the fastening bolt is a hexagon socket fastening bolt installed in a counter bore of the cover plate; the locking mechanism covers the hexagon socket head cap tightening bolt and includes: the slotted pipe sleeve is arranged in a hole at the head part of the inner hexagonal bolt; and the lower end of the locking screw is provided with a conical part which is used for propping open the slotted pipe sleeve through interaction with the slotted position of the slotted pipe sleeve so that the outer surface of the slotted pipe sleeve and the inner surface of the inner hexagonal fastening bolt are subjected to friction self-locking. The safety protection mechanism comprises: an inner bolt cover in threaded connection with the slotted pipe sleeve; the screw rod is connected with the top of the inner bolt cover; the screw rod is positioned outside the inner bolt cover and penetrates through the outer bolt cover; and the screw rod is in threaded connection, and a bolt sleeve of the outer bolt cover is pressed tightly, and the bolt sleeve is provided with a connecting port which can be connected with other devices.
According to a third embodiment of the present invention, the fastening bolt is an outer hexagon bolt, the hexagon head of which protrudes out of the equipment cover plate; the locking mechanism includes: the slotted pipe sleeve is arranged at the head part of the outer hexagon bolt; the elastic hoop is arranged outside the slotted pipe sleeve and is provided with a locking screw, and when the locking screw is screwed down, the lower part of the slotted pipe sleeve shrinks and compresses a hexagonal head of a fastening bolt, so that the slotted pipe sleeve and the hexagonal head are self-locked by friction; the safety protection mechanism comprises: the bolt cover is arranged on the equipment cover plate and covers the locking mechanism; a connecting piece which is positioned in the bolt cover and is connected with the upper end of each slotted pipe sleeve of the at least two locking mechanisms; the tensioning piece is positioned in the bolt cover and is used for connecting the connecting pieces at the upper end of each slotted pipe sleeve together; and the bolt penetrates through the bolt cover to be connected with the tensioning sheet, and a connecting port for mounting the sensor is arranged on the bolt.
According to a fourth embodiment of the invention, the head of the fastening bolt protrudes out of the cover plate; the locking mechanism includes: the split ring is sleeved on the head of the fastening bolt; and the bolt sleeve is sleeved on the split ring and provided with a jackscrew, and the jackscrew penetrates through the bolt sleeve to jack the split ring, so that the split ring is contacted with the fastening bolt to generate a friction self-locking effect.
According to a fifth embodiment of the invention, the head of the fastening bolt protrudes out of the cover plate or is surrounded by a bolt retainer; the locking mechanism includes: the split ring is sleeved on the head of the fastening bolt or the periphery of the bolt retainer; the locking screw is arranged at the opening of the split ring and used for enabling the hexagonal head of the fastening bolt or the bolt retainer to be sleeved by the split ring sleeve through screwing the split ring so as to generate friction self-locking; the safety protection mechanism comprises: a bolt cover for covering at least two of the fastening bolts or bolt retainers, and at least two of the locking mechanisms; a connecting piece located in the bolt cover and connecting the two split rings of at least two locking mechanisms together; the connecting rod is positioned in the bolt cover and used for connecting the connecting piece with the bolt cover; and the bolt sleeve is fixed outside the bolt cover and is provided with a connecting port for connecting the sensor.
According to a sixth or seventh embodiment of the invention, the head of the fastening bolt protrudes out of the cover plate; the locking mechanism is a bolt sleeve which is sleeved on the head of the fastening bolt and is provided with a jackscrew, the jackscrew penetrates through the bolt sleeve to jack the head of the fastening bolt, the fastening bolt is frictionally and self-locked, and the friction self-locking comprises the blocking effect of the jackscrew or a small-diameter cylindrical hole opening on the fastening bolt;
the safety protection mechanism is an upper cover which is integrated with the top of the bolt sleeve with the jackscrew and is provided with a connecting port.
Compared with the prior art, the utility model discloses a locking mechanical system locks fastening bolt, provides safety protection to locking mechanical system through safety protection mechanism, therefore can provide explosion-proof electrical equipment's security greatly, more be difficult for opening promptly, can conveniently install parts such as instrument and meter, sensor again simultaneously at explosion-proof equipment fastening bolt head.
The apparatus and method of the present invention are described in detail below with reference to the accompanying drawings in specific embodiments.
Drawings
Fig. 1 is a schematic view of the structure of the device for fastening the explosion-proof electrical equipment chamber of the present invention;
fig. 2 is a schematic view of a first embodiment of the device for fastening an explosion-proof electrical equipment chamber of the present invention;
fig. 3 is a schematic view of a second embodiment of the device for fastening an explosion-proof electrical equipment chamber of the present invention;
FIG. 4 is a schematic view of a third embodiment of the apparatus for securing an explosion-proof electrical equipment chamber of the present invention;
FIG. 5 is a schematic view showing the structure of the K-direction yoke of FIG. 4 and the M-direction yoke of FIG. 8;
fig. 6 is a schematic view of a fourth embodiment of the device for fastening an explosion-proof electrical equipment chamber according to the present invention;
FIG. 7 is a schematic diagram showing the structure of the split ring of FIG. 6;
fig. 8 is a schematic view of a fifth embodiment of the device for fastening an explosion-proof electrical apparatus chamber of the present invention;
FIG. 9 is a schematic view showing the structure of the Q-clamp of FIG. 8;
figure 10 is a schematic view of a sixth embodiment of the device for fastening explosion-proof electrical equipment chambers of the present invention;
fig. 11 is a schematic view of a seventh embodiment of the device for fastening an explosion-proof electrical equipment chamber according to the present invention.
Description of reference numerals: 1-bolt cover A; 3-bolt cover B; 4-locking screws; 5-slotted pipe sleeve A; 6-electric equipment cover plate; 7-outer hexagonal fastening bolts; 8-an electrical equipment cavity; 10-bolt cover C; 11-hexagon socket head cap screw; 12-slotted pipe sleeve B; 13-locking screw B; 14-a spring washer; 16-slotted pipe sleeve C; 18-split ring; 19-bolt sleeve with jackscrew A; 20-top thread; 21-bolt sleeve B with top thread; 22-connection port A; 101-port B; 171-an elastic clamp a; 172-locking screw a; 181-locking screw B; 182-a clip B capable of being loosened and tightened; 183-elastic clamp C; 184-bolt retainer; 197-connecting piece a; 198-connecting rods; 201-port C; 202-a screw rod; 203-bolt sleeve; 205-bolt cover D; 301-a nut; 302-back cap; 901-connecting piece B; 902-a tensioning sheet; 903-connecting port D; 904-bolt.
Detailed Description
The utility model also provides a device for fastening explosion-proof electrical equipment cavity, fig. 1 is shown, include: an equipment cover plate 6 for closing the electrical equipment cavity 8; fastening bolts that fasten the cover plate 6 to the electrical equipment chamber 8; a locking mechanism that locks the fastening bolt; and a safety protection mechanism for fastening the locking mechanism and preventing the locking mechanism from being detached or connected with an external device at will.
In a first embodiment of the device for fastening cavities of explosion-proof electrical equipment according to the present invention, shown in fig. 2, said fastening bolts are outer hexagonal fastening bolts 7 fitted into counter bores of the cover plate 6; the locking mechanism covers the outer hexagonal fastening bolt 7 and includes: a slotted pipe sleeve 5 which is arranged in the counter bore and has an inner conical surface; the lower end of the locking screw 4 penetrating through the slotted pipe sleeve 5 is provided with a conical part and is used for propping open the slotted pipe sleeve 5 through interaction with the inner conical surface of the slotted pipe sleeve 5 so that the outer surface of the slotted pipe sleeve 5 and the surface of the counter bore are self-locked through friction; a compression nut 301 which is positioned at the upper end of the slotted pipe sleeve 5 and is in threaded connection with the locking screw 4; the safety protection mechanism comprises: a cap 302 for preventing the compression nut from loosening and threadedly coupling the locking screw 4; a connection port B101 with connection screw thread opened on the head of the locking screw.
Specifically, when the outer hexagonal fastening bolt 7 is installed in the bolt-receiving hole of the equipment cover 6 or in the bolt-retaining ring, the locking mechanism includes: the locking screw 4 penetrates through the slotted pipe sleeve A5 and is screwed with the nut 301, when the locking screw 4 is screwed, the conical head of the locking screw struts the slotted pipe sleeve 5 to apply pressure to the inner surface of the counter bore, the friction force between the locking screw and the counter bore is increased along with the increase of the pressure, and after a certain degree is reached, friction self-locking occurs, and at the moment, the slotted pipe sleeve A5 cannot be taken down from the counter bore, and the nut 301 must be unscrewed when the locking screw is taken down. Screwing on the back cap 302 prevents loosening.
The locking screw 4 is provided with a connection port B101 and a connection thread, and is sealed with a pin or lead after connecting other components.
In a second embodiment of the device for fastening explosion-proof electrical equipment chambers of the present invention, shown in fig. 3, the fastening bolts are hexagon socket fastening bolts 11 mounted in counter bores of the electrical equipment cover plate 6; the locking mechanism covers the hexagon socket fastening bolt 11 and includes: a slotted pipe sleeve B12 arranged in the head hole of the hexagon socket head; and the lower end of the locking screw B13 in threaded connection with the slotted pipe sleeve B12 is provided with a conical part which is used for propping the slotted pipe sleeve A5 through interaction with the slotted position of the slotted pipe sleeve A5, so that the outer surface of the slotted pipe sleeve and the inner surface of the inner hexagonal fastening bolt 11 are self-locked through friction. The safety protection mechanism comprises: an inner bolt cover B3 in threaded connection with the slotted pipe sleeve B12; a screw rod 202 connected with the top of the inner bolt cover B3; the screw rod 202 is arranged outside the inner bolt cover and penetrates through the outer bolt cover A1; the screw rod 201 is connected in a threaded mode, a bolt sleeve 203 of the outer bolt cover A1 is pressed tightly, and a connecting port C201 capable of being connected with other devices is formed in the bolt sleeve 203.
Specifically, when the hexagon socket head cap screws 11 are installed in the screw-receiving holes of the electric equipment cover plate 6 or in the screw-receiving rings, the locking mechanism includes: the slotted pipe sleeve B12 is installed in the inner hexagonal bolt head hole, the slotted pipe sleeve B12 is in threaded connection with a locking screw B13, when the locking screw B13 is screwed up with force, the slotted pipe sleeve B12 is expanded to the inner surface of the bolt head hole by the conical head of the locking screw B13, the friction force between the slotted pipe sleeve B12 and the locking screw B13 is increased along with the increase of the pressure, friction self-locking occurs after a certain degree is reached, the slotted pipe sleeve B12 cannot be taken down from the bolt head hole, and when the slotted pipe sleeve B is to be taken down, the locking screw B13 must be unscrewed.
In addition, a bolt cover B3 screwed to the slotted pipe cover B12, the bolt cover B3 is connected to a screw 202, the screw 202 passes through the bolt cover A1, and a bolt sleeve 203 is screwed, and the bolt sleeve 203 can be connected to other devices and has a connection port C201.
In a third embodiment of the device for fastening cavities of explosion-proof electrical apparatuses according to the present invention, shown in fig. 4 and 5, the fastening bolts are outer (inner) hexagon bolts 7, the heads of which protrude from the apparatus cover plate 6. The locking mechanism includes: a slotted pipe sleeve C16 mounted on the head of the bolt 7; and an elastic clamp A171 which is arranged outside the slotted pipe sleeve C16 and is provided with a locking screw A172, and when the locking screw A172 is tightened, the lower part of the slotted pipe sleeve C16 is contracted and tightly presses the head part of the fastening bolt 7, so that the two parts are self-locked by friction. The safety protection mechanism comprises: a bolt cover C10 which is arranged on the equipment cover plate and covers the locking mechanism; a connecting piece 901 which is positioned in the bolt housing C10 and is connected to the upper end of each slotted pipe sleeve C16 of at least two locking mechanisms; a tension plate 902 located within the bolt housing C10 and connecting together a connecting plate 901 at the upper end of each slotted shroud C16; and a bolt 904 penetrating through the bolt cover C10 and connecting the tension sheet 902, wherein a connection port 903 for installing instruments such as a sensor is arranged on the bolt 904.
Specifically, when the fastening bolts 7 of the equipment cover 6 are not in the counterbores or the retainer is not added, the locking mechanism includes: the slotted pipe sleeve C16 is arranged at the head of an outer hexagon bolt, the elastic hoop A171 is arranged outside the slotted pipe sleeve C16, when the locking screw A172 is screwed, the lower part of the slotted pipe sleeve C16 contracts to press the head of the fastening bolt 7, the friction force between the slotted pipe sleeve C16 and the head of the fastening bolt 7 is increased along with the increase of the pressure, friction self-locking occurs after a certain degree is reached, the slotted pipe sleeve C16 cannot be taken down from the head of the bolt, and when the slotted pipe sleeve C172 needs to be unscrewed. More than two bolts can be simultaneously provided with the locking mechanism.
In addition, a connecting piece B901 is installed on the upper side of the slotted pipe sleeve C16, the connecting piece is fastened through a tensioning piece 902, a bolt 904 is arranged on the tensioning piece 902, a connecting port D903 is arranged on the bolt 904, the bolt 904 penetrates through a bolt cover C10, the bolt cover C10 buckles more than two bolts with locking mechanisms, a sensor and the like are installed on the bolt 904, and the connecting port D903 is arranged on the bolt 904.
In a fourth embodiment of the device for fastening cavities of explosion-proof electrical apparatuses according to the present invention, shown in fig. 6 and 7, the head of the fastening bolt 7 protrudes from said cover plate 6; the locking mechanism includes: a split ring 18 sleeved on the head part of the fastening bolt 7; and the bolt sleeve A19 is sleeved on the split ring 18 and provided with a jackscrew 20, and the jackscrew penetrates through the bolt sleeve A19 to jack the split ring 18, so that the split ring 18 is in contact with the fastening bolt, and the friction self-locking effect is generated.
Specifically, when the fastening bolts 7 of the equipment cover 6 are not in the counterbores or the retainer is not added, the locking mechanism includes: the bolt sleeve A19 with the jackscrew is installed at the head of the fastening bolt 7, when the jackscrew 20 is screwed down, the split ring 18 contracts to compress the bolt head of the fastening bolt 7, the friction force between the bolt head and the split ring is increased along with the increase of the pressure, the friction self-locking is generated after a certain degree is reached, the bolt sleeve A19 with the jackscrew is not taken down from the bolt head, and the jackscrew 20 must be unscrewed when the bolt sleeve A is taken down.
In a fifth embodiment of the device for fastening cavities of explosion-proof electrical apparatuses according to the present invention, shown in fig. 8 and 9, the head of the fastening bolt 7 protrudes from said cover plate 6. The locking mechanism includes: a flexible clamp B182 sleeved on the head of the fastening bolt 7; the locking screw B181 is arranged at the opening of the elastic clamp B182 and is used for tightening the head of the fastening bolt 7 by tightening the locking screw so as to enable the elastic clamp B182 to be sleeved with the head of the fastening bolt 7 to generate friction self-locking; or the elastic clamp C183 is sleeved outside the bolt retainer 184, and the locking screw a 172 of the elastic clamp C183 is structurally shown in fig. 5, so that the elastic clamp C183 is tightly sleeved on the bolt retainer 184 to generate friction self-locking by tightening the locking screw. The safety protection mechanism comprises: a bolt cover D205 or a bolt retainer 184 that covers at least two of the outer hexagon bolts 7 and at least two locking mechanisms; a connecting piece A197 positioned in the bolt housing D205 and connecting two openable and closable clamps B182 of at least two locking mechanisms together; a connecting rod 198 located inside the bolt housing D205 connecting the connecting piece with the bolt housing D205; and a bolt sleeve 203 fixed outside the bolt cover D205 and provided with a connecting port for connecting a sensor and the like.
Specifically, when the fastening bolt 7 of the equipment cover plate 6 is not in the counterbore, the locking mechanism includes: but install at elasticity clamp B182 of fastening bolt 7 head, when its locking screw B181 was screwed up, the hexagonal head of compression fastening bolt 7, along with pressure increase, frictional force between the two also increased, took place the friction auto-lock after reaching the certain degree, but not take off elasticity clamp B182 from the bolt head. When the locking screw B181 is required to be unscrewed; when the bolt retainer 184 is arranged outside the fastening bolt of the equipment cover plate 6, the elastic clamp C183 arranged outside the bolt retainer 184 compresses the bolt retainer 184 when the locking screw a 172 is screwed down, the friction force between the bolt retainer 184 and the bolt retainer is increased along with the increase of the pressure, and the friction self-locking is generated after the friction self-locking is achieved to a certain degree.
The safety shield mechanism of this embodiment comprises: connecting pieces A197 are arranged on a flexible clamp B182 and a flexible clamp C183 of more than two locking mechanisms to connect the more than two locking mechanisms, a connecting rod 198 connects the connecting pieces A197 with a bolt cover D205, and a bolt sleeve 203 is fixed on the bolt cover D205 and is connected with other devices.
Fig. 10 shows a sixth embodiment of the device for fastening cavities of explosion-proof electrical apparatuses according to the invention, in which the head of the fastening bolt 7 protrudes beyond the cover plate 6. The locking mechanism is a bolt sleeve B21 with a top thread 20 and sleeved on the head of the fastening bolt 7, and the top thread 20 penetrates through the bolt sleeve B21 with the top thread to press against the head of the fastening bolt, so that the self-locking fastening bolt is rubbed. In this sixth embodiment, there are four jackscrews 20, two of which are against the head of the fastening bolt 7; the other two are against the lower end of the head of the fastening bolt 7. The safety protection mechanism is an upper cover which is integrated with the top of a bolt sleeve B21 with jackscrew 20 and is provided with a connecting port 22.
Specifically, when the fastening bolt 7 of the equipment cover plate 6 is not in the counterbore, the locking mechanism includes: install the top wire bolt cover B21 of taking at fastening bolt 7 head, when jackscrew 20 screws up, compress tightly fastening bolt 7's bolt head, along with pressure increase, frictional force between the two also increases, takes place the friction auto-lock after reaching the certain degree, including jackscrew to bolt head's the effect of blockking, take not take off top wire bolt cover B21 from the bolt head, when will take off, must unscrew jackscrew 20.
In addition, a connection port 22 is provided on the jackscrew bolt bush B21 to connect with other devices.
Fig. 11 shows a seventh embodiment of the device for fastening cavities of explosion-proof electrical apparatuses of the present invention, which differs from the sixth embodiment shown in fig. 10 in that: the lower end of the bolt sleeve B21 with the jackscrew is processed with a large-diameter cylindrical hole 210 and a small-diameter cylindrical hole 210, the cylindrical hole in contact with the cover plate is smaller than the diameter of the cylindrical hole above the bolt sleeve B21, the large-diameter cylindrical hole 210 of the bolt sleeve B21 with the jackscrew is buckled on the fastening bolt 7, the jackscrew 20 is screwed, and the jacking pressure is formed on the side surface of the head part of the fastening bolt 7 to realize friction self-locking of the external (internal) hexagonal fastening bolt 7, namely: when the bolt sleeve 21 is to be removed, the inner edge of the small-diameter cylindrical hole 210 and the friction force act together to block the bolt sleeve 21 from being removed. Instruments and meters are connected with the bolt sleeve B21 through a connecting port 22, and the connecting port 22 is a concave ring and can be correspondingly connected with a convex ring. The tubular connecting part of the instrument can also be sleeved on the concave ring and fixedly connected by a pipe hoop.
Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can make various modifications according to the principle of the present invention. Therefore, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (7)
1. An apparatus for securing an explosion proof electrical equipment chamber, comprising:
the equipment cover plate is used for sealing the electrical equipment cavity;
a fastening bolt fastening the cover plate to the electrical equipment cavity;
it is characterized by also comprising:
a locking mechanism that locks the fastening bolt; and
a safety guard mechanism securing the locking mechanism for preventing the locking mechanism from being removed at will or for connection with an external device.
2. The apparatus of claim 1, wherein the fastening bolt is an outer or inner hexagonal fastening bolt installed into a counterbore of the cover plate;
the locking mechanism covers the outer or inner hexagonal fastening bolt and includes:
the slotted pipe sleeve is arranged in the counter bore and is provided with an inner conical surface;
the lower end of the locking screw penetrating through the slotted pipe sleeve is provided with a conical part and is used for propping open the slotted pipe sleeve through interaction with the inner conical surface of the slotted pipe sleeve so that the outer surface of the slotted pipe sleeve and the surface of the counter bore are subjected to friction self-locking; and
the compression nut is positioned at the upper end of the slotted pipe sleeve and is in threaded connection with the locking screw;
the safety protection mechanism comprises:
or a back nut for preventing the compression nut from loosening and in threaded connection with the locking screw;
or a connection port opened on the head of the locking screw and having a connection thread therein.
3. The apparatus of claim 1, wherein the fastening bolt is a socket head fastening bolt fitted into a counterbore of the cover plate;
the locking mechanism covers the hexagon socket head cap tightening bolt and includes:
the slotted pipe sleeve is arranged in a hole at the head part of the inner hexagonal bolt;
the lower end of the locking screw is provided with a conical part which is used for propping open the slotted pipe sleeve through interaction with the slotted position of the slotted pipe sleeve so that the outer surface of the slotted pipe sleeve and the inner surface of the head hole of the inner hexagonal fastening bolt are self-locked through friction;
the safety protection mechanism comprises:
an inner bolt cover in threaded connection with the slotted pipe sleeve;
the screw rod is connected with the top of the inner bolt cover;
the screw rod is positioned outside the inner bolt cover and penetrates through the outer bolt cover;
and the screw rod is in threaded connection, and a bolt sleeve of the outer bolt cover is pressed tightly, and the bolt sleeve is provided with a connecting port which can be connected with other devices.
4. The apparatus of claim 1, wherein the fastening bolt is an outer hex bolt having a hex head that extends beyond the equipment cover;
the locking mechanism includes:
the slotted pipe sleeve is arranged at the head part of the outer hexagon bolt;
the lower part of the slotted pipe sleeve shrinks and compresses a hexagonal head of a fastening bolt to enable the slotted pipe sleeve and the hexagonal head to be self-locked by friction when the elastic clamp is screwed down;
the safety protection mechanism comprises:
a bolt cover mounted on the equipment cover plate and covering the locking mechanism;
a connecting piece located in the bolt cover and connected to the upper end of each slotted pipe sleeve of the at least two locking mechanisms;
the tensioning piece is positioned in the bolt cover and is used for connecting the connecting pieces at the upper end of each slotted pipe sleeve together; and
and the bolt penetrates through the bolt cover to be connected with the tensioning sheet, and a connecting port for mounting the sensor is arranged on the bolt.
5. The apparatus of claim 1, wherein the head of the fastening bolt protrudes out of the cover plate;
the locking mechanism includes:
the split ring is sleeved on the head of the fastening bolt;
and the bolt sleeve is sleeved on the split ring and provided with a jackscrew, and the jackscrew penetrates through the bolt sleeve to jack the split ring, so that the split ring is contacted with the fastening bolt to generate a friction self-locking effect.
6. The device according to claim 1, characterized in that the fastening bolt has a bolt head protruding from the cover plate or is surrounded by a bolt retainer;
the locking mechanism includes:
the split ring is sleeved on the head of the fastening bolt or the periphery of the bolt retainer;
the locking screw is arranged at the opening of the split ring and used for enabling the split ring to tightly sleeve the head of the fastening bolt or the bolt retainer ring by screwing the split ring so as to generate friction self-locking;
the safety protection mechanism comprises:
a bolt cover for covering at least two of the fastening bolts or bolt retainers, and at least two of the locking mechanisms;
a connecting piece located in the bolt cover and connecting the two split rings of at least two locking mechanisms together;
the connecting rod is positioned in the bolt cover and used for connecting the connecting piece with the bolt cover; and
and the bolt sleeve is fixed outside the bolt cover and is provided with a connecting port for connecting the sensor.
7. The apparatus of claim 1, wherein the head of the fastening bolt protrudes out of the cover plate;
the locking mechanism is a bolt sleeve which is sleeved on the head of the fastening bolt and is provided with a jackscrew, the jackscrew penetrates through the bolt sleeve to jack the head of the fastening bolt, the fastening bolt is frictionally and self-locked, and the friction self-locking comprises the blocking effect of the jackscrew or a small-diameter cylindrical hole opening on the fastening bolt;
the safety protection mechanism is an upper cover which is integrated with the top of the bolt sleeve with the jackscrew and is provided with a connecting port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920218011.5U CN209949663U (en) | 2019-02-21 | 2019-02-21 | Device for fastening explosion-proof electrical equipment cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920218011.5U CN209949663U (en) | 2019-02-21 | 2019-02-21 | Device for fastening explosion-proof electrical equipment cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209949663U true CN209949663U (en) | 2020-01-14 |
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ID=69122482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920218011.5U Active CN209949663U (en) | 2019-02-21 | 2019-02-21 | Device for fastening explosion-proof electrical equipment cavity |
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| Country | Link |
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| CN (1) | CN209949663U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
| EP4056860A1 (en) * | 2021-03-11 | 2022-09-14 | Yokogawa Electric Corporation | Explosion-proof structure |
-
2019
- 2019-02-21 CN CN201920218011.5U patent/CN209949663U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
| EP4056860A1 (en) * | 2021-03-11 | 2022-09-14 | Yokogawa Electric Corporation | Explosion-proof structure |
| US11905094B2 (en) | 2021-03-11 | 2024-02-20 | Yokogawa Electric Corporation | Explosion-proof structure |
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