A fire-fighting maintenance smoke sensing device convenient to disassemble

Abstract

The application relates to the technical field of fire protection maintenance, and discloses a fire protection maintenance smoke sensing device convenient to disassemble and assemble, which comprises a smoke sensing assembly and a limiting type clamping mechanism, and the structure comprises a threaded column provided with an external thread structure on an outer surface, a threaded sleeve capable of rotating and installed on the periphery of the threaded column through the thread structure, an upper limiting ring capable of rotating and installed on the periphery of the threaded sleeve in a rotating mode, a resisting limiting ring located directly below the threaded column and capable of moving longitudinally along with the upper limiting ring, and three clamping legs capable of clamping the smoke sensing assembly and installed at the bottom of the threaded column. The fire protection maintenance smoke sensing device convenient to disassemble and assemble clamps and positions the side surface of the smoke sensing assembly by using the three clamping legs capable of being folded, so that the quick positioning function of the smoke sensing assembly is realized; in addition, the three clamping legs can limit and clamp smoke sensing assemblies of different sizes, so that the clamping range of the equipment on the smoke sensing assembly is expanded, and the applicability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire protection and maintenance, in particular to a fire protection and maintenance smoke sensing device convenient to disassemble and assemble. BACKGROUND

[0002] Fire protection and maintenance smoke sensing is a common device in the fire protection system, which is used for detecting smoke in the environment and sending alarm signals, so as to discover fire in time and take corresponding rescue and fire extinguishing measures. Fire protection and maintenance smoke sensing plays a key role in preventing fire and protecting the safety of life and property. When smoke is generated, it can quickly and accurately send an alarm, so that people can take appropriate measures to extinguish the fire and evacuate in time.

[0003] For example, the Chinese patent with publication number "CN220523666U" discloses a "fire protection and maintenance smoke sensing device convenient to disassemble and assemble", which mainly comprises a mounting plate, an outer frame, a quick release assembly, a smoke sensing assembly and a guide mechanism. The mounting plate is connected with the outer frame at the bottom, the outer frame is connected with the quick release assembly inside, the quick release assembly is connected with the smoke sensing assembly at the bottom, the mounting plate is provided with the guide mechanism, the guide mechanism comprises a fixed frame, a connecting rod and a guide piece, four fixed frames are connected with the mounting plate at the bottom through bolts, the connecting rods are connected with the quick release assembly, and the guide pieces are connected with the connecting rods. The quick release assembly is positioned by the fixed frame and the guide rod, so that the operator can quickly position and improve the installation convenience. When disassembly is needed, the quick release assembly is first pushed upward and then rotated, so that the quick release assembly drives the smoke sensing assembly to separate and complete the quick disassembly.

[0004] However, the smoke sensing assembly needs to be installed with a quick release assembly during production and manufacturing. In other words, different sizes of smoke sensing assemblies need to be connected with different sizes of quick release assemblies, which leads to the need to produce different sizes of quick release assemblies when connecting different sizes of smoke sensing assemblies. Therefore, the device has the defect of poor adaptability. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a fire protection and maintenance smoke sensing device convenient to disassemble and assemble. Three retractable clamping legs are used to clamp and position the side surface of the smoke sensing assembly, thereby realizing the quick positioning function of the smoke sensing assembly. In addition, the three clamping legs can limit and clamp different sizes of smoke sensing assemblies, thereby expanding the clamping range of the device for the smoke sensing assembly and improving the applicability of the device, thereby solving the above technical problems.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A fire-fighting maintenance smoke sensing device convenient to disassemble and assemble, comprising a smoke sensing assembly, further comprising a limiting type clamping mechanism, which comprises a threaded column with external thread structure arranged on the outer surface, a threaded sleeve capable of rotating and mounted on the periphery of the threaded column through the thread structure, an upper limiting ring capable of rotating and mounted on the periphery of the threaded sleeve in a rotating manner, a contact limiting ring located directly below the threaded column and capable of moving longitudinally with the upper limiting ring, and three clamping legs capable of clamping the smoke sensing assembly and mounted on the bottom of the threaded column.

[0007] Preferably, the limiting type clamping mechanism further comprises an upper limiting ring and a lower limiting ring arranged on the circumferential side of the top and bottom of the threaded column, the bottom of the threaded column is provided with an insertion cavity with a concave structure, and the bottom of the threaded column is provided with three clamping legs arranged in an annular array, and a rubber pad is arranged on the inner side of the bottom of each clamping leg, the center of the threaded sleeve is provided with an internal thread hole mounted on the periphery of the middle column of the threaded column through the thread structure, the bottom periphery of the threaded sleeve is provided with a fixed ring capable of rotating and mounted through a bearing, the outer circumferential surface of the fixed ring is provided with an upper connecting lug of integral structure and at a horizontal angle, the ring hole of the contact limiting ring is sleeved on the periphery of the clamping leg, the outer circumferential surface of the contact limiting ring is provided with a lower connecting lug of integral structure and at a horizontal angle, and the upper connecting lug and the lower connecting lug are fixedly connected through a longitudinal connecting rod.

[0008] Preferably, the structure diameter of the insertion cavity is not less than the structure size of the cross section of the smoke sensing assembly, so as to insert the smoke sensing assembly into the insertion cavity.

[0009] Preferably, the thread structure comprises an internal thread structure arranged at the circumferential inner wall of the internal thread hole and an external thread structure arranged at the column body of the threaded column, and the internal thread structure and the external thread structure are matched.

[0010] Preferably, the outer circumferential surface of the top of the threaded sleeve is provided with a polygonal structure for facilitating the force of a wrench.

[0011] Preferably, the thickness of the clamping leg gradually increases from top to bottom, so that the inner side of the contact limiting ring is in contact with it to cause the folding phenomenon.

[0012] Preferably, it further comprises a knob type disassembly and assembly mechanism, which comprises an insertion column fixedly mounted on the upper surface of the threaded column, three knob clamping blocks arranged in an annular array on the outer circumferential surface of the insertion column, a hollow shell capable of being fixedly mounted on a plane and having a hollow structure inside, an annular clamping groove arranged at the bottom of the hollow shell and capable of knob positioning the knob clamping block, and a spiral spring capable of providing pre-tightening effect to the knob clamping block.

[0013] Preferably, the knob type dismounting mechanism further comprises a bottom connecting plate integrally arranged at the bottom of the insertion column, the bottom of the bottom connecting plate is fixedly installed at the top of the threaded column, the outer circumferential surface of the insertion column is provided with three knob clamping blocks arranged in an annular array, the bottom of the hollow shell is provided with a lower edge channel in an integral structure, the middle of the lower edge channel is provided with three annular clamping grooves arranged in an annular array, one side of the bottom of each annular clamping groove is provided with an insertion notch for inserting the knob clamping block into the interior thereof, the top of the hollow shell is provided with a top connecting plate in an integral structure, the interior of the hollow shell is provided with a longitudinal movable cavity, the bottom of the longitudinal movable cavity is provided with an insertion hole communicating with the bottom end of the longitudinal movable cavity, the hollow shell is provided with an inner movable plate capable of moving axially along the longitudinal movable cavity in the interior of the longitudinal movable cavity, the top of the inner movable plate is provided with a spiral spring in a compressed state, the bottom end of the inner movable plate is provided with a contact rod in an integral structure, and the bottom end of the contact rod can abut against the top end surface of the insertion column.

[0014] Preferably, the knob clamping block can be inserted into the annular clamping groove through the insertion notch and clamped into the solid end of the annular clamping groove by rotating the hollow shell.

[0015] Preferably, the structure radius of the insertion hole is matched with the structure radius of the insertion column.

[0016] Compared with the prior art, the application provides a fire-fighting maintenance smoke sensing device which is convenient to dismount and has the following beneficial effects:

[0017] The three retractable clamping legs clamp and position the side surface of the smoke sensing assembly, thereby realizing the quick positioning function of the smoke sensing assembly. In addition, the three clamping legs can clamp different sizes of smoke sensing assemblies in a limiting manner, thereby expanding the clamping range of the equipment on the smoke sensing assembly and improving the applicability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the application;

[0019] Figure 2 It is a perspective sectional view of the application;

[0020] Figure 3 It is a perspective view of the limiting clamping mechanism in the application;

[0021] Figure 4 It is a perspective sectional view of the limiting clamping mechanism in the application;

[0022] Figure 5 It is a partial perspective view of the limiting clamping mechanism in the application;

[0023] Figure 6It is a perspective view of the knob type dismounting mechanism in the application;

[0024] Figure 7 It is a perspective sectional view of the knob type dismounting mechanism in the application;

[0025] Figure 8 It is a partial perspective view of the knob type dismounting mechanism in the application.

[0026] Among them: 1, smoke sensing component; 2, limiting type clamping mechanism; 21, threaded column; 22, upper limiting ring; 23, insertion cavity; 24, clamping leg; 25, rubber pad; 26, threaded sleeve; 27, fixed ring body; 28, internal threaded hole; 29, longitudinal connecting rod; 210, abutting limiting ring; 211, lower limiting ring; 212, upper connecting lug; 213, lower connecting lug; 3, knob type dismounting mechanism; 31, hollow shell; 32, top connecting plate; 33, longitudinal movable cavity; 34, insertion hole; 35, built-in movable plate; 36, spiral spring; 37, abutting rod; 38, insertion column; 39, bottom connecting plate; 310, knob clamping block; 311, annular clamping groove; 312, insertion notch; 313, lower edge channel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0028] Please refer to Figure 1 and Figure 2 A fire-fighting maintenance smoke sensing device convenient to dismount, comprising a smoke sensing component 1, a top connecting plate 32 is fixedly installed at a working position by a bolt.

[0029] In order to realize clamping and positioning effect on smoke sensing components 1 of different sizes, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, need to set the limit type clamping mechanism 2, its structure includes the outer surface is provided with external thread structure thread column 21, through the thread structure is installed in the outer thread sleeve 26, which can rotate around the thread column 21, with rotating way installed in the outer thread sleeve 26 and can rotate the upper limit ring 22, located directly below the thread column 21 and can move longitudinally with the upper limit ring 22 contact limit ring 210 and three installed in the bottom of the thread column 21 and can clamp the smoke component 1 clamping leg 24, by the wrench directional rotation of the thread sleeve 26, due to the thread structure connection, the thread sleeve 26 moves up, at the same time, the thread sleeve 26 will lead to the contact limit ring 210 upward movement, to ensure that the three clamping leg 24 is in a fully expanded state, and then the required smoke component 1 one end from bottom to top into the cavity 23 inside, and then through the wrench reverse rotation of the thread sleeve 26, due to the thread structure connection, the thread sleeve 26 moves down, at the same time, under the linkage effect of the longitudinal connecting rod 29, the thread sleeve 26 will lead to the contact limit ring 210 downward movement, when the inner surface of the contact limit ring 210 and the outer side of the three clamping leg 24 contact, the contact limit ring 210 will cause the three clamping leg 24 synchronous folding phenomenon, when the rubber pad 25 contact in the outer side of the smoke component 1, further rotation of the thread sleeve 26, at this time, the contact limit ring 210 will make the three clamping leg 24 continue to produce folding trend, until the bottom of the three clamping leg 24 tightly clamped in the outer side of the smoke component 1, so as to realize the clamping positioning effect of different size of smoke component 1.

[0030] About the specific structure of the limit type clamping mechanism 2, please refer to Figure 3 、 Figure 4 and Figure 5Also including upper and lower limit rings 22 and 211 arranged on the top and bottom circumferential sides of threaded column 21, the bottom of threaded column 21 is provided with an insertion cavity 23 of concave structure, the bottom of threaded column 21 is provided with three clamping legs 24 arranged in annular array, one rubber pad 25 is arranged on the inner side of the bottom of each clamping leg 24, the center of threaded sleeve 26 is provided with an inner threaded hole 28 arranged on the outer periphery of the middle column of threaded column 21 through threaded structure, the bottom periphery of threaded sleeve 26 is provided with a rotatable fixing ring 27 arranged through bearing, the outer circumferential surface of fixing ring 27 is provided with an upper connecting lug 212 of integral structure and at a horizontal angle, the ring hole of abutting limit ring 210 is sleeved on the outer periphery of clamping leg 24, the outer circumferential surface of abutting limit ring 210 is provided with a lower connecting lug 213 of integral structure and at a horizontal angle, the upper and lower connecting lugs 212 and 213 are fixedly connected through longitudinal connecting rod 29, the structure diameter of insertion cavity 23 is not less than the structure size of the cross section of smoke sensing assembly 1, so as to insert smoke sensing assembly 1 into the inside of insertion cavity 23, the threaded structure includes inner threaded structure arranged on the circumferential inner wall of inner threaded hole 28 and outer threaded structure arranged on the column body of threaded column 21, and the inner threaded structure is matched with the outer threaded structure, the outer circumferential surface of the top of threaded sleeve 26 is provided with a polygonal structure for facilitating the force of wrench, the thickness of clamping leg 24 gradually increases from top to bottom, so that the inner side of abutting limit ring 210 is in contact with it to occur folding phenomenon.

[0031] In order to realize the function of quick disassembly and assembly, please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8, need to set the knob type disassembly mechanism 3, its structure includes fixedly installed on the threaded column 21 surface of the insertion column 38, three annular array layout in the outer circumference surface of the insertion column 38 knob block 310, can be fixedly installed in the plane and the inside hollow structure of the hollow shell 31, set in the hollow shell 31 bottom and can be knob positioning knob block 310 annular card slot 311 and can be pre-tightening effect of the spiral spring 36, handheld threaded column 21, upward movement of the device, so that the insertion column 38 corresponding to the insertion hole 34, and then make each knob block 310 corresponding to each insertion notch 312 into the inside, until the knob block 310 in the annular card slot 311, and then directional rotation threaded column 21, so that the knob block 310 in the annular card slot 311 inside the relative rotation phenomenon, until the knob block 310 to the solid end of the annular card slot 311, at this time, the knob block 310 will be carded into the annular card slot 311, at the same time, when the top of the insertion column 38 resistance bar 37 bottom end, will produce an upward force on the resistance bar 37, so that the resistance bar 37 upward movement trend, when the force is greater than the elastic force of the spiral spring 36, the spiral spring 36 will be compressed, at the same time, the resistance bar 37 upward movement, and the elastic force of the spiral spring 36 will make the insertion column 38 in the form of pre-tightening carded into the annular card slot 311 inside, to ensure the working stability of the smoke sensing assembly 1 and anti-interference ability.

[0032] About the specific structure of the knob type disassembly mechanism 3, please refer to Figure 6 、 Figure 7 and Figure 8It also includes a bottom connecting plate 39 integrally arranged at the bottom of the insertion column 38, the bottom of the bottom connecting plate 39 is fixedly installed at the top of the threaded column 21, the outer circumferential surface of the insertion column 38 is provided with three knob clamping blocks 310 arranged in an annular array, the bottom of the hollow shell 31 is provided with a lower edge channel 313 in an integral structure, the middle of the lower edge channel 313 is provided with three annular clamping grooves 311 arranged in an annular array, one side of the bottom of each annular clamping groove 311 is provided with an insertion notch 312 for inserting the knob clamping block 310 into the inside, the top of the hollow shell 31 is provided with a top connecting plate 32 in an integral structure, the inside of the hollow shell 31 is provided with a longitudinal movable cavity 33, the bottom of the longitudinal movable cavity 33 is provided with an insertion hole 34 communicating with the bottom end of the longitudinal movable cavity 33, the hollow shell 31 is provided with an inner movable plate 35 capable of moving axially along the longitudinal movable cavity 33 inside the longitudinal movable cavity 33, the top of the inner movable plate 35 is provided with a spiral spring 36 in a compressed state, the bottom end of the inner movable plate 35 is provided with a contact rod 37 in an integral structure, and the bottom end of the contact rod 37 can abut against the top end surface of the insertion column 38, the knob clamping block 310 can be inserted into the inside of the annular clamping groove 311 through the insertion notch 312, and the knob clamping block 310 can be clamped into the solid end of the annular clamping groove 311 by rotating the hollow shell 31, and the structure radius of the insertion hole 34 is matched with the structure radius of the insertion column 38.

[0033] In use, the top connecting plate 32 is fixedly installed at the position where work is needed by means of bolts, the threaded sleeve 26 is oriented and rotated by means of a wrench, and the threaded sleeve 26 moves upward due to the threaded structure connection, at the same time, the threaded sleeve 26 drives the abutting limiting ring 210 to move upward, so as to ensure that the three clamping legs 24 are in a fully expanded state, and then the required smoke sensing assembly 1 is inserted into the insertion cavity 23 from bottom to top, and the threaded sleeve 26 is reversely rotated by means of a wrench, and the threaded sleeve 26 moves downward due to the threaded structure connection, at the same time, under the linkage effect of the longitudinal connecting rod 29, the threaded sleeve 26 drives the abutting limiting ring 210 to move downward, when the inner surface of the abutting limiting ring 210 contacts the outer side of the three clamping legs 24, the abutting limiting ring 210 causes the three clamping legs 24 to be synchronously folded, when the rubber pad 25 abuts against the outer side of the smoke sensing assembly 1, the threaded sleeve 26 is further rotated, at this time, the abutting limiting ring 210 causes the three clamping legs 24 to continue to be folded, until the bottoms of the three clamping legs 24 tightly clamp the outer side of the smoke sensing assembly 1, the threaded column 21 is held by hand, the device is moved upward, so that the insertion column 38 corresponds to the insertion hole 34, and then each knob clamping block 310 corresponds to the inside of each insertion notch 312, until the knob clamping block 310 is located in the annular clamping groove 311, and then the threaded column 21 is oriented and rotated, so that the knob clamping block 310 relatively rotates in the annular clamping groove 311, until the knob clamping block 310 moves to the solid end of the annular clamping groove 311, at this time, the knob clamping block 310 is clamped in the annular clamping groove 311, and at the same time, when the top of the insertion column 38 abuts against the bottom end of the abutting rod 37, an upward force is generated on the abutting rod 37, so that the abutting rod 37 moves upward, when the force is greater than the elastic force of the spiral spring 36, the spiral spring 36 is compressed, at the same time, the abutting rod 37 moves upward, and the elastic force formed by the spiral spring 36 causes the insertion column 38 to be clamped in the annular clamping groove 311 in the form of pre-tightening force, so as to ensure the working stability and anti-interference ability of the smoke sensing assembly 1.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting smoke detector that is easy to install and disassemble, comprising a smoke detector assembly (1), characterized in that: It also includes, The limiting clamping mechanism (2) includes a threaded post (21) with an external thread structure on its outer surface, a threaded sleeve (26) that is installed around the threaded post (21) and can rotate, an upper limit ring (22) that is installed around the threaded sleeve (26) and can rotate, an abutting limiting ring (210) that is located directly below the threaded post (21) and can move longitudinally with the upper limit ring (22), and three clamping legs (24) that are installed at the bottom of the threaded post (21) and can clamp the smoke detector assembly (1). The limiting clamping mechanism (2) further includes an upper limiting ring (22) and a lower limiting ring (211) disposed on the top and bottom circumferential sides of the threaded column (21). The bottom of the threaded column (21) is provided with an insertion cavity (23) with a concave structure. The bottom of the threaded column (21) is equipped with three clamping legs (24) arranged in a ring array. A rubber pad (25) is installed on the inner side of the bottom of each clamping leg (24). The center of the threaded sleeve (26) is provided with an internal threaded hole (28) that is installed on the outer periphery of the middle section of the threaded column (21) through a threaded structure. The bottom periphery of the threaded sleeve (26) is equipped with a bearing capable of... The rotating fixed ring (27) has an upper connecting ear (212) integrally formed with it and at a horizontal angle on its outer circumferential surface. The ring hole of the contact limiting ring (210) is fitted around the clamping leg (24). The lower connecting ear (213) integrally formed with it and at a horizontal angle is provided on the outer circumferential surface of the contact limiting ring (210). The upper connecting ear (212) and the lower connecting ear (213) are fixedly connected by a longitudinal connecting rod (29). The thickness of the clamping leg (24) gradually increases from top to bottom so that the inner side of the contact limiting ring (210) can contact it and cause a closing phenomenon.

2. The fire-fighting smoke detector that is easy to disassemble and maintain according to claim 1, characterized in that: The structural diameter of the insertion cavity (23) is not less than the structural dimension of the cross-section of the smoke sensor assembly (1) so that the smoke sensor assembly (1) can be inserted into the insertion cavity (23).

3. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in claim 2, is characterized in that: The threaded structure includes an internal threaded structure located on the inner wall of the internal threaded hole (28) and an external threaded structure located on the body of the threaded column (21), and the internal threaded structure is adapted to the external threaded structure.

4. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in claim 3, is characterized in that: The outer circumferential surface of the top of the threaded sleeve (26) is provided with a polygonal structure to facilitate the application of force by a wrench.

5. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in any one of claims 2-4, characterized in that: It also includes a knob-type disassembly and assembly mechanism (3), the structure of which includes an insertion post (38) fixedly installed on the upper surface of the threaded post (21), three knob blocks (310) arranged in a ring array on the outer circumference of the insertion post (38), a hollow shell (31) that can be fixedly installed on a plane and has a hollow internal structure, an annular groove (311) set at the bottom of the hollow shell (31) and capable of knob positioning of the knob block (310), and a helical spring (36) capable of pre-tightening the knob block (310).

6. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in claim 5, is characterized in that: The knob-type disassembly and assembly mechanism (3) also includes a bottom connecting plate (39) integrally disposed at the bottom of the insertion post (38). The bottom of the bottom connecting plate (39) is fixedly installed at the top of the threaded post (21). The outer circumferential surface of the insertion post (38) is provided with three knob blocks (310) arranged in a ring array. The bottom of the hollow shell (31) is provided with a lower edge channel (313) integrally disposed with it. The middle of the lower edge channel (313) is provided with three ring slots (311) arranged in a ring array. Each ring slot (311) has an insertion notch (312) on one side of its bottom for the knob block (310) to be inserted into it. The top of the hollow shell (31) The hollow shell (31) is provided with a top connecting plate (32) integrated with it. The hollow shell (31) is provided with a longitudinal movable cavity (33). The bottom of the longitudinal movable cavity (33) is provided with an insertion hole (34) communicating with the bottom end of the longitudinal movable cavity (33). The hollow shell (31) has a built-in movable plate (35) that can move along the longitudinal movable cavity (33) axially inside the longitudinal movable cavity (33). The top of the built-in movable plate (35) is provided with a coil spring (36) in a compressed state. The bottom end of the built-in movable plate (35) is provided with an abutment rod (37) integrated with it, and the bottom end of the abutment rod (37) can abut against the top end face of the insertion post (38).

7. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in claim 6, is characterized in that: The knob block (310) can be inserted into the annular slot (311) through the insertion notch (312), and the knob block (310) can be engaged into the solid end of the annular slot (311) through the knob hollow shell (31).

8. A fire-fighting smoke detector that is easy to disassemble and maintain, as described in claim 7, is characterized in that: The structural radius of the insertion hole (34) is adapted to the structural radius of the insertion post (38).

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