Fixing device of linear fire detector

Abstract

The utility model belongs to the technical field of fire detection, and particularly relates to a fixing device of a linear fire detector, which comprises a detector and a fixing device, the fixing device comprises a shell, a rotating rod is slidably arranged in the shell in the front-back direction, and bumps are arranged on the upper side and the lower side of the front end of the rotating rod; a driving structure for driving the rotating rod to move back and forth is further arranged in the shell, a special-shaped sliding way is arranged at the top of the rotating rod, a fixing block is fixedly arranged at the top of the shell, the end of the fixing block penetrates through the top wall of the shell to be in sliding connection with the special-shaped sliding way, a through hole is formed in the front side wall of the shell, and a connecting part is fixedly arranged on the back face of the detector. A limiting structure is arranged on the inner side wall of the connecting part, and the connecting part extends into the through hole and is connected with the rotating rod through the limiting structure. According to the utility model, the detector is fixed through the fixing device, and maintenance work of the detector can be completed by only one worker, so that the efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire detection, and in particular relates to a fixing device for a linear fire detector. Background Art

[0002] Linear fire detectors are detectors that sense physical or chemical phenomena caused by fire near a continuous line. Linear fire detectors are divided into smoke, temperature or light detectors. The main products used in engineering practice include linear infrared beam smoke detectors, cable-type linear constant temperature fire detectors and air pipe linear differential temperature fire detectors.

[0003] Linear fire detectors are generally fixed on higher walls. Through the coordinated use of the transmitter and receiver, an alarm is sounded in the event of a fire. Therefore, linear fire detectors need to be regularly inspected and maintained.

[0004] A fixing device for a linear fire detector with application number CN202021070075.4 includes a detector body and a mounting plate, a mounting rod is symmetrically fixedly connected to the detector body, a mounting groove is symmetrically arranged on the mounting plate, the mounting groove matches the mounting rod, a pressure rod is symmetrically slidably inserted into the mounting plate, a reset device is arranged on the pressure rod, a fixing block is symmetrically fixedly connected in the mounting plate, a telescopic device is arranged on the fixing block, a connecting rod is fixedly connected to the pressure rod, a first pin is fixedly connected to the connecting rod, the first pin is slidably connected in the mounting plate, a movable rod is symmetrically arranged in the mounting plate, the first pin is rotatably connected to the movable rod, and a clamping mechanism is arranged on the movable rod. When disassembly is required, the pressure plate is pulled outward to make the pressure rod move outward, driving the clamping rod to move horizontally to the side away from the mounting groove until it is out of the clamping groove, and the detector body is removed to complete the disassembly.

[0005] However, when the above-mentioned fixing device is used to disassemble the fire detector, the two pressure plates on both sides of the fire detector need to be pulled simultaneously. When the clamping rod is out of the clamping slot, the detector body needs to be manually removed. Therefore, two workers are required to disassemble the fire detector, which is inconvenient. Utility Model Content

[0006] The purpose of the utility model is to provide a fixing device for a linear fire detector to solve the problems raised in the above background technology.

[0007] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0008] A fixing device for a linear fire detector comprises a detector and a fixing device, the fixing device comprising a shell, a rotating rod is slidably provided in the shell in the forward and backward directions, the front end of the rotating rod is provided with protrusions on both the upper and lower sides, the shell is also provided with a driving structure for driving the rotating rod to move forward and backward, the top of the rotating rod is provided with a special-shaped slide, the top of the shell is fixedly provided with a fixing block, the end of the fixing block passes through the top wall of the shell and is slidably connected to the special-shaped slide, the front side wall of the shell is provided with a through hole, the back side of the detector is fixedly provided with a connecting component, the inner side wall of the connecting component is provided with a limiting structure, the connecting component extends into the through hole and is connected to the rotating rod through the limiting structure.

[0009] As an improvement, the connecting component includes a barrel box fixed on the back side of the detector, and a first through hole for the rotating rod to extend into is provided on the side wall of the barrel box away from the detector, and first inlets and outlets compatible with the protrusion are provided on the upper and lower sides of the first through hole, and the limiting structure includes a circular fixing plate fixed to the inside of the barrel box, and a second through hole is provided on the fixing plate, and two second inlets and outlets are provided at positions corresponding to the two first inlets and outlets on the second through hole, and two limiting plates extending along the axial direction of the barrel box are provided on the side walls of the second through hole, and the two limiting plates are both arc-shaped plates with a width at one end greater than that at the other end.

[0010] As a further improvement, the driving structure includes an elongated groove opened on the top of the shell, a driving rod is slidably arranged in the elongated groove, and the bottom of the driving rod extends into the interior of the shell and is rotatably connected to the rotating rod.

[0011] As a further improvement, the special-shaped slideway includes a straight section and an arc section that are interconnected, and the straight section is arranged at one end close to the detector.

[0012] As a further improvement, a fixing structure is provided at the top of the driving rod, and the fixing structure includes a fixing piece rotatably arranged at the top of the driving rod. A limit box is fixedly provided at the top of the shell on one side of the elongated groove, and a plurality of limit holes are provided at the top of the limit box. An end of the fixing piece away from the driving rod extends downward to form a limit column, and the limit column is located in the limit hole. A spring is also fixed at the top of the driving rod, and the other end of the spring is connected to an end of the fixing piece away from the limit column.

[0013] As a further improvement, it also includes a lifting mechanism, which includes a fixed cylinder, a worm wheel is rotatably provided on the top of the fixed cylinder, a worm is meshed on the outer wall of the worm wheel, a screw is connected to the internal thread of the worm wheel, the screw is located in the fixed cylinder, and the shell is fixed on the top of the screw.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] The fixing device of the linear fire detector provided by the utility model fixes the detector by connecting the fixing component and the rotating rod, and only one worker is needed to complete the disassembly, inspection and installation of the detector, which is simpler to operate, more convenient to use and more efficient to work.

[0016] Since the detector is installed at a high position, a lifting mechanism is provided, so that the staff does not need to use a ladder or other device to climb up during maintenance. The detector can be removed for maintenance, which is safer and further improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of this embodiment;

[0018] Figure 2 is a structural schematic diagram of the fixed structure in this embodiment;

[0019] Figure 3 is an exploded view of the fixed structure in this embodiment;

[0020] Figure 4 yes Figure 2 A magnified view of part A;

[0021] Figure 5 Schematic diagram of the internal structure of the connecting component in this embodiment;

[0022] Wherein: 1-detector, 2-fixing device, 3-screw, 4-housing, 5-rotating rod, 6-driving structure, 7-connecting component, 8-bump, 9-special-shaped slideway, 10-fixing block, 11-straight section, 12-arc section, 13-barrel box, 14-first through hole, 15-first inlet and outlet, 16-fixing plate, 17-second through hole, 18-second inlet and outlet, 19-arc plate, 20-long strip groove, 21-driving rod, 22-arc groove, 23-fixing structure, 24-fixing part, 25-limit box, 26-limit hole, 27-limit column, 28-spring, 29-fixing barrel, 30-worm wheel, 31-worm. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] like Figure 1-5 As shown, a fixing device 2 of a linear fire detector comprises a detector 1, a fixing device 2 for fixing the detector 1 and a lifting mechanism 3 for driving the fixing device 2 and the detector 1 to rise and fall. The lifting mechanism 3 is arranged in a wall, and the fixing device 2 is arranged at the top of the lifting mechanism 3.

[0026] The fixing device 2 includes a shell 4, in which a rotating rod 5 is slidably provided in the front-to-back direction. A driving structure 6 for driving the rotating rod 5 to move forward and backward is also provided in the shell 4. A through hole is provided on the front side wall of the shell 4, and a connecting component 7 is fixedly provided on the back of the detector 1. One end of the connecting component 7 away from the detector 1 extends into the shell 4 through the through hole, and then the driving structure 6 drives the rotating rod 5 to move forward and connect with the connecting component 7, thereby fixing the detector 1.

[0027] Specifically, a lifting ring is fixedly provided on the inner top wall of the shell 4, and the rotating rod 5 is slidably arranged in the lifting ring. The specific structure of the lifting ring is prior art and will not be described in detail here.

[0028] In this embodiment, protrusions 8 are provided on the upper and lower sides of the front end of the rotating rod 5, and a special-shaped slide 9 is also provided on the top of the rotating rod 5. A fixed block 10 is fixed on the top of the shell 4, and the end of the fixed block 10 passes through the top wall of the shell 4 and is slidably connected to the special-shaped slide 9. The special-shaped slide 9 includes a straight section 11 and an arc section 12 that are connected to each other. The straight section 11 is arranged at an end close to the detector 1.

[0029] The connecting component 7 includes a barrel box 13 fixed to the back of the detector 1. A first through hole 14 for the rotating rod 5 to extend into is provided on the side wall of the barrel box 13 away from the detector 1. First inlets and outlets 15 adapted to the two protrusions 8 are respectively provided on the upper and lower sides of the first through hole 14. A limiting structure is provided on the inner wall of the barrel box 13.

[0030] The limiting structure includes a circular fixing plate 16 fixed on the inner wall of the barrel box 13, a second through hole 17 is opened on the fixing plate 16, a second inlet and outlet 18 is provided at a position corresponding to the two first inlets and outlets 15 on the second through hole 17, and two limiting plates extending in the axial direction of the barrel box 13 are provided on the side wall of the second through hole 17, the two limiting plates are symmetrical about the center of the second through hole 17, and the two limiting plates are arc-shaped plates 19 with gradually increasing width.

[0031] The driving structure 6 drives the rotating rod 5 to move forward, and at the same time, the fixed block 10 slides in the straight section 11, and the rotating rod 5 extends into the first through hole 14. At the same time, the two protrusions 8 at the front end of the rotating rod 5 enter the barrel box 13 through the first inlet and outlet 15, and the rotating rod 5 continues to move forward. When the fixed block 10 enters the arc section 12, the two protrusions 8 at the front end of the rotating rod 5 pass through the two second inlet and outlet 18, and the rotating rod 5 passes through the second through hole 17, and the rotating rod 5 continues to move forward. The fixed block 10 slides in the arc section 12, thereby driving the rotating rod 5 to rotate while moving forward until the two protrusions 8 respectively abut against the side walls of the two limit plates away from the second through hole 17. At this time, the positions of the two protrusions 8 are fixed, thereby achieving the purpose of fixing the detector 1.

[0032] In this embodiment, the driving structure 6 includes an elongated groove 20 opened on the top of the shell 4, and a driving rod 21 is slidably provided in the elongated groove 20. The bottom of the driving rod 21 extends into the interior of the shell 4 and is rotatably connected to the rotating rod 5. Specifically, an arc groove 22 is opened on the top of the end of the rotating rod 5 away from the through hole, and a fixed column in the front-to-back direction is fixedly provided on the rear inner wall of the shell 4. The other end of the fixed column extends into the interior of the rotating rod 5. The bottom of the driving rod 21 extends into the arc groove 22 and is rotatably connected to the fixed column. Pushing the driving rod 21 to move forward can drive the rotating rod 5 to move forward. When the fixed block 10 enters the arc segment 12, it continues to push the driving rod 21 to move forward, which can drive the rotating rod 5 to move forward and rotate at the same time.

[0033] In this embodiment, a fixing structure 23 is provided at the top of the driving rod 21, and the fixing structure 23 includes a fixing part 24 rotatably set on the top of the driving rod 21. A limit box 25 is fixedly provided on the top of the shell 4 on one side of the long strip groove 20. A plurality of limit holes 26 are provided on the top of the limit box 25. One end of the fixing part 24 away from the driving rod 21 extends downward to form a limit column 27. The limit column 27 is located in the limit hole 26. A spring 28 is also fixed on the top of the driving rod 21. The other end of the spring 28 is fixedly connected to the end of the fixing part 24 away from the limit column 27. The fixing structure 23 limits the position of the driving rod 21.

[0034] In this embodiment, the lifting mechanism 3 includes a fixed cylinder 29 fixed in the wall. Specifically, a groove is opened in the wall, and the fixed cylinder 29 is vertically fixed in the groove. A worm gear 30 is rotatably provided at the top of the fixed cylinder 29. A worm 31 is meshed with the outer wall of the worm gear 30. One end of the worm 31 is rotatably connected to the inside of the wall, and the other end extends out of the wall and is fixed with a rotating handle. The internal thread of the worm gear 30 is connected to a screw 3, and the screw 3 is located in the fixed cylinder 29. The shell 4 is fixed at the top of the screw 3, and the through hole on the shell 4 is set on the front side wall away from the wall.

[0035] Preferably, the height of the fixing tube 29 is set to the height of an average adult, so that the staff can turn the handle without squatting or raising their height.

[0036] When the detector 1 needs to be inspected, the staff turns the handle to drive the worm 31 to rotate, and then drives the worm wheel 30 and the screw 3 to rotate. The screw 3 moves downward while rotating, and then drives the fixing device 2 and the detector 1 to move downward. The staff then holds the driving rod 21 and presses the end of the fixing part 24 away from the limiting column 27 with the index finger. At this time, the spring 28 is compressed and the limiting column 27 disengages from the limiting hole 26. The driving rod 21 is then pulled to extend the strip groove 20 to move backward. Under the action of the special-shaped slide 9 and the fixing block 10, the rotating rod 5 moves backward while rotating. The driving rod 21 continues to extend the strip groove 20 and move backward. Under the action of the special-shaped slide 9 and the fixing block 10, the rotating rod 5 continues to move backward and disengages from the connecting component 7. At this time, the staff removes the detector 1 with the other hand and inspects the detector 1.

[0037] The utility model only needs one worker to complete the inspection and maintenance of the detector, and the efficiency is higher.

[0038] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A fixing device for a linear fire detector, comprising a detector and a fixing device, characterized in that: The fixing device includes a shell, a rotating rod is provided in the shell for sliding in the front-to-back direction, protrusions are provided on the upper and lower sides of the front end of the rotating rod, and a driving structure for driving the rotating rod to move forward and backward is also provided in the shell, a special-shaped slide is provided on the top of the rotating rod, a fixing block is fixedly provided on the top of the shell, the end of the fixing block passes through the top wall of the shell and is slidably connected to the special-shaped slide, a through hole is provided on the front side wall of the shell, a connecting component is fixedly provided on the back side of the detector, a limiting structure is provided on the inner side wall of the connecting component, and the connecting component extends into the through hole and is connected to the rotating rod through the limiting structure.

2. The fixing device of the linear fire detector according to claim 1, characterized in that: The connecting component includes a barrel box fixed on the back side of the detector, and a first through hole for the rotating rod to extend into is provided on the side wall of the barrel box away from the detector, and first inlets and outlets adapted to the protrusion are provided on the upper and lower sides of the first through hole, and the limiting structure includes a circular fixing plate fixed to the inside of the barrel box, and a second through hole is provided on the fixing plate, and two second inlets and outlets are provided at positions corresponding to the two first inlets and outlets on the second through hole, and two limiting plates extending along the axial direction of the barrel box are provided on the side walls of the second through hole, and the two limiting plates are both arc-shaped plates with a width at one end greater than that at the other end.

3. The fixing device of the linear fire detector according to claim 1, characterized in that: The driving structure comprises a long strip groove opened on the top of the shell, a driving rod is slidably arranged in the long strip groove, and the bottom of the driving rod extends into the inside of the shell and is rotatably connected with the rotating rod.

4. The fixing device of the linear fire detector according to claim 1, characterized in that: The special-shaped slideway comprises a straight section and an arc section which are connected to each other, and the straight section is arranged at one end close to the detector.

5. The fixing device of the linear fire detector according to claim 3, characterized in that: A fixing structure is provided on the top of the driving rod, and the fixing structure includes a fixing piece rotatably arranged on the top of the driving rod. A limit box is fixedly provided on the top of the shell on one side of the long strip groove, and a plurality of limit holes are provided on the top of the limit box. One end of the fixing piece away from the driving rod extends downward to form a limit column, and the limit column is located in the limit hole. A spring is also fixed on the top of the driving rod, and the other end of the spring is connected to one end of the fixing piece away from the limit column.

6. The fixing device for a linear fire detector according to any one of claims 1 to 5, characterized in that: It also includes a lifting mechanism, which includes a fixed cylinder, a worm wheel is rotatably provided on the top of the fixed cylinder, a worm is meshed with an outer wall of the worm wheel, a screw is connected to the internal thread of the worm wheel, the screw is located in the fixed cylinder, and the shell is fixed on the top of the screw.

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