Grating alarm device for subway platform door

Abstract

The utility model discloses a grating alarm device for a subway platform door, which relates to the technical field of processing and production of a fixing structure for mounting a grating alarm, and comprises a platform and a mounting seat fixedly connected with the platform, the mounting seat is connected with a mounting rod in a matched manner, and a limiting groove structure is arranged in the mounting seat. One end of the limiting groove structure extends upwards to penetrate through the top face of the mounting base, the other end of the limiting groove structure is provided with a locking end used for fixing the mounting rod, the periphery of the mounting rod is provided with a mounting block matched with the limiting groove structure, the mounting block is fixed to the locking end, and the top of the mounting rod is fixedly connected with a threaded rod. The periphery of the threaded rod is connected with a mounting table used for being connected with a grating alarm. The installation of the grating alarm is realized quickly, operation is convenient, and later maintenance and replacement are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of processing and production of a fixed structure for installing a grating alarm, in particular to a grating alarm device for a subway platform door. Background Art

[0002] Fiber Bragg grating is a diffraction grating formed by axially periodically modulating the refractive index of the optical fiber core through a certain method. It is a passive filtering device. Because grating fiber has the advantages of small size, small fusion loss, full compatibility with optical fiber, and ability to be embedded in smart materials, and its resonant wavelength is sensitive to changes in external environment such as temperature, strain, refractive index, and concentration, it has been widely used in the field of optical fiber communication and sensing.

[0003] In subway stations, grating alarm devices are often installed on both sides of platform door frames to prevent people from climbing over the platform doors. Existing grating alarm devices are installed using nuts, which is not convenient for disassembly. If the grating alarm device fails, it cannot be quickly disassembled and repaired. In addition, general grating alarm devices cannot adjust the height, making the grating alarm device only suitable for subway platforms with fixed heights. Utility Model Content

[0004] The utility model aims to provide a subway platform door grating alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway platform door grating alarm device, comprising a mounting base fixedly connected to the platform, the mounting base being cooperatively connected to a mounting rod, a limiting groove structure being provided inside the mounting base, one end of the limiting groove structure extending upward through the top surface of the mounting base, the other end of the limiting groove structure having a locking end for fixing the mounting rod, a mounting block matching the limiting groove structure being provided on the outer periphery of the mounting rod, the mounting block being fixed to the locking end, a threaded rod being fixedly connected to the top of the mounting rod, and a mounting platform for connecting a grating alarm being connected to the outer periphery of the threaded rod.

[0006] According to the utility model, further, a limiting groove is provided on the outer periphery of the threaded rod, and the mounting platform has a limiting block matched with the limiting groove, and the limiting block is connected to the limiting groove in a relative sliding manner.

[0007] According to the utility model, further, the outer circumference of the threaded rod is threadedly connected with an upper fixing cap and a lower fixing cap, and the upper fixing cap and the lower fixing cap are respectively arranged above and below the mounting platform to limit the longitudinal position movement of the mounting platform.

[0008] According to the utility model, further, the limit groove structure includes an installation groove, which is vertically arranged inside the mounting seat, and the top of the installation groove passes through the top surface of the mounting seat, one end of the installation groove is connected to a rotating groove connected thereto, and one end of the rotating groove is connected to a locking groove connected thereto, and the locking groove is used to fix the mounting block.

[0009] According to the utility model, further, vertical control grooves are opened on the two opposite side surfaces inside the mounting seat, a vertically arranged sliding rod is fixedly welded inside the control groove, a first spring is sleeved on the outer periphery of the sliding rod, one end of the first spring is relatively fixed to the mounting seat, and the other end extends upward and has a spacing from the top surface of the control groove, a top plate is installed inside the mounting seat, the top plate is slidably connected to the sliding rod, and makes sliding motion along the axial direction of the sliding rod, and the bottom of the connecting plate is fixedly connected to the first spring.

[0010] According to the utility model, further, a gear groove is provided at the bottom of the mounting platform, and a connecting gear ring matching with the gear groove is provided at the top of the lower fixing cap.

[0011] According to the utility model, further, two shock-absorbing rods arranged opposite to each other are fixedly welded on the outer periphery of the mounting platform, and a protective plate is slidably installed on the outer periphery of the shock-absorbing rods. The two protective plates are respectively located on both sides of the grating alarm to prevent the grating alarm from touching external objects.

[0012] According to the utility model, further, a limiting plate is welded to the end of the shock absorbing rod away from the mounting platform, and the limiting plate is located on one side of the outer surface of the protection plate to prevent the protection plate from detaching from the far end of the shock absorbing rod.

[0013] According to the utility model, further, a second spring is sleeved on the outer periphery of the shock absorbing rod, one end of the second spring is fixed to the surface of the mounting platform, and the other end is fixedly welded to the protection plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model inserts the mounting block at the bottom of the mounting rod into the mounting seat along the mounting groove, rotates the mounting rod, and the mounting block enters the locking groove from the rotating groove. The first spring pushes the connecting piece to drive the top piece to move upward, and fixes the mounting block on the upper part of the locking groove to prevent the mounting block from being separated from the locking groove, thereby realizing the simple installation of the grating alarm device and facilitating the maintenance of the grating alarm device.

[0016] 2. The utility model also adjusts the height of the grating alarm device by rotating the upper fixing cap and the lower fixing cap to adjust the height of the mounting platform through the coordinated use of the upper fixing cap, the lower fixing cap, the mounting platform, the threaded rod, the connecting gear ring, and the gear groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0019] Figure 3 This is a schematic diagram of the installation block structure of the utility model from the third viewing angle;

[0020] Figure 4 This is a cross-sectional view of the mounting seat structure from the fourth viewing angle of the utility model.

[0021] In the figure: 1-platform; 2-mounting seat; 3-mounting slot; 4-rotation slot; 5-locking slot; 6-mounting plate; 7-control slot; 8-sliding rod; 9-top plate; 10-connecting plate; 11-first spring; 12-mounting rod; 13-mounting block; 14-threaded rod; 15-limiting slot; 16-upper fixing cap; 17-lower fixing cap; 18-connecting gear ring; 19-mounting platform; 20-limiting block; 21-gear slot; 22-support rod; 23-grating alarm; 24-shock absorbing rod; 25-limiting plate; 26-second spring; 27-protective plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a subway platform door grating alarm device, which is used to conveniently and quickly install a grating alarm 23 on the platform 1, and the height of the grating alarm 23 can be adjusted according to needs. It includes a mounting base 2 connected to the platform 1, the mounting base 2 is an annular columnar structure, and the bottom in contact with the platform 1 is a closed structure. The outer periphery of the mounting base 2 is fixedly welded with a mounting piece 6 for fixed connection with the mounting platform 1, and one end of the mounting piece 6 extends away from the center of the mounting base 2; preferably, the mounting piece 6 is two pieces, which are evenly distributed on the outer periphery of the mounting base 2; the mounting piece 6 has a positioning hole, and the connecting component passes through the positioning hole and is fixed to the platform 1 to achieve the fixation of the mounting base 2; optimally, the positioning hole is a threaded hole, and the connecting component is a bolt, which passes through the threaded hole and is fixedly connected to the platform 1 to achieve the installation of the mounting base 2. A mounting groove 3 is provided inside the mounting seat 2, and the top of the mounting groove 3 passes through the top surface of the mounting seat 2, so that the mounting rod 12 described in detail later can be matched and connected thereto, and the mounting groove 3 also plays a guiding role; a rotating groove 4 communicating with the mounting groove 3 is provided inside the mounting seat 2, and a locking groove 5 communicating with the rotating groove 4 is provided inside the mounting seat 2, and the center line of the locking groove 5 is parallel to the mounting groove 3, and the height is less than the height of the mounting groove 3; vertical control grooves 7 are provided on opposite sides inside the mounting seat 2, and a vertically arranged sliding rod 8 is fixedly welded inside the control groove 7, and a first spring 11 is sleeved on the outer periphery of the sliding rod 8, One end of the first spring 11 is fixedly connected to the mounting seat 2, and the other end extends upwards and is spaced from the top surface of the control slot 7. A top sheet 9 is slidably installed inside the mounting seat 2. The top sheet 9 has a connecting sheet 10 slidably connected to the sliding rod 8. The connecting sheet 10 is slidably connected to the outside of the sliding rod 8 and slides along the axial direction of the sliding rod 8. The bottom of the connecting sheet 10 is fixedly connected to the first spring 11. The first spring 11 pushes the connecting sheet 10 to move upward along the sliding rod 8, driving the top sheet 9 to move upward. The outer periphery of the mounting rod 12 fixedly connected to the mounting seat 2 is fixedly welded with a mounting block 13 matching the mounting slot 3. The mounting block 13 is inserted into the mounting seat 2 from top to bottom along the mounting slot 3. The mounting rod 12 is rotated, and the mounting block 13 enters the locking slot 5 from the rotating slot 4. The top sheet 9 is pushed upward under the action of the first spring 11 to fix the mounting block 13 in the locking slot 5 to prevent the mounting rod 12 from dislocating and rotating. A threaded rod 14 is fixedly welded to the top of the mounting rod 12, and a mounting platform 19 is slidably installed on the outer periphery of the threaded rod 14, and the height of the mounting platform 19 can be adjusted as needed; the mounting platform 19 has a support rod 22 for connecting a grating alarm 23, the support rod 22 is horizontally arranged and extends in a direction away from the threaded rod 14, and the distal end of the support rod 22 is threadedly connected to the grating alarm 23.

[0024] In order to further achieve the relative stability of the mounting platform 19 and the threaded rod 14 and ensure that the position of the grating alarm 23 does not change arbitrarily, a limit groove 15 is opened on the outer periphery of the threaded rod 14, and the limit groove 15 is vertically downward. A limit block 20 matching the limit groove 15 is fixedly welded inside the mounting platform 19, and the limit block 20 is slidably connected to the inside of the limit groove 15 to prevent the limit block 20 from rotating and causing the grating alarms 23 on both sides to be unable to align; preferably, there are two limit grooves 15, which are evenly distributed on the outer periphery of the threaded rod 14, and the two points determine a straight line to ensure the installation horizontality of the mounting platform 19 and the threaded rod 14 and the connection stability between the two; the outer periphery of the threaded rod 14 is threadedly connected with an upper fixing cap 16 and a lower fixing cap 17, and the upper fixing cap 16 and the lower fixing cap 17 are respectively located above and below the mounting platform 19, to limit the longitudinal position of the mounting platform 19 and further ensure the stability of the mounting platform 19. When the position of the mounting platform 19 needs to be adjusted, the upper fixing cap 16 and the lower fixing cap 17 are rotated to increase the gap between the two, and the mounting platform 19 is adjusted up and down. After the position is adjusted, the upper fixing cap 16 and the lower fixing cap 17 are rotated again to make the two fit the upper surface or the lower surface of the corresponding mounting platform respectively, and the position of the mounting platform 19 is fixed to achieve height adjustment.

[0025] Furthermore, a gear groove 21 is provided at the bottom of the mounting platform 19, and a connecting gear ring 18 matching the gear groove 21 is fixedly welded on the top of the lower fixing cap 17. The mounting platform 19 slides down due to gravity, so that the connecting gear ring 18 is inserted into the gear groove 21, so that the two are meshed, and the position of the mounting platform 19 is limited, thereby preventing the position of the mounting platform 19 from changing arbitrarily; two shock-absorbing rods 24 arranged opposite to each other are fixedly welded on the periphery of the mounting platform 19, and a protective plate 27 is slidably installed on the periphery of the shock-absorbing rod 24. The two protective plates 27 are located on the left and right sides of the grating alarm 23 to prevent the grating alarm 23 from touching external objects and to prevent the outside from touching the grating alarm 23. The left and right here are for Figure 1 In the direction shown; a limiting plate 25 is welded to the end of the shock-absorbing rod 24 away from the mounting platform 19, and the limiting plate 25 is located on the outer surface of the protective plate 27 to prevent the protective plate 27 from detaching from the far end of the shock-absorbing rod 24; a second spring 26 is sleeved on the outer periphery of the shock-absorbing rod 24, one end of the second spring 26 is fixed to the surface of the mounting platform 19, and the other end is fixedly welded to the protective plate 27, the second spring 26 has a buffering effect on the impact force of the protective plate 27, and prevents the impact force from excessively damaging the mounting rod 12.

[0026] Working principle: When the utility model is in use, the mounting seat 2 is fixedly connected to the platform 1, the mounting block 13 at the bottom of the mounting rod 12 is inserted into the mounting seat 2 along the mounting groove 3, the mounting rod 12 is rotated, and the mounting block 13 enters the locking groove 5 from the rotating groove 4. The first spring 11 pushes the connecting piece 10 to move upward along the sliding rod 8, driving the top piece 9 to move upward, and fixes the mounting block 13 on the upper part of the locking groove 5 to prevent the mounting block 13 from escaping from the locking groove 5, thereby realizing easy installation of the grating alarm device, and the height adjustment of the mounting platform 19 is realized by rotating the upper fixing cap 16 and the lower fixing cap 17 to adjust the different height positions of the mounting platform 19.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subway platform door grating alarm device, comprising a mounting base fixedly connected to the platform, the mounting base being cooperatively connected to a mounting rod, characterized in that: A limiting groove structure is provided inside the mounting seat, one end of the limiting groove structure extends upward through the top surface of the mounting seat, the other end of the limiting groove structure has a locking end for fixing the mounting rod, the outer periphery of the mounting rod has a mounting block matching the limiting groove structure, the mounting block is fixed to the locking end, a threaded rod is fixedly connected to the top of the mounting rod, and the outer periphery of the threaded rod is connected to a mounting platform for connecting a grating alarm.

2. A subway platform door grating alarm device as claimed in claim 1, characterized in that: The outer periphery of the threaded rod is provided with a limiting groove, and the mounting platform has a limiting block matched with the limiting groove, and the limiting block is connected with the limiting groove in a relative sliding manner.

3. A subway platform door grating alarm device according to claim 2, characterized in that: The outer circumference of the threaded rod is threadedly connected with an upper fixing cap and a lower fixing cap, which are respectively arranged above and below the mounting platform to limit the longitudinal position movement of the mounting platform.

4. A subway platform door grating alarm device as claimed in claim 1, characterized in that: The limiting groove structure includes an installation groove, which is vertically arranged inside the installation seat. The top of the installation groove passes through the top surface of the installation seat. One end of the installation groove is connected to a rotating groove connected thereto. One end of the rotating groove is connected to a locking groove connected thereto. The locking groove is used to fix the installation block.

5. A subway platform door grating alarm device as claimed in claim 4, characterized in that: The mounting seat is provided with vertical control grooves on the two opposite sides of the inner surface, a vertically arranged sliding rod is fixedly welded inside the control groove, a first spring is sleeved on the outer periphery of the sliding rod, one end of the first spring is relatively fixed to the mounting seat, and the other end extends upward and has a distance from the top surface of the control groove, a top plate is installed inside the mounting seat, the top plate is slidably connected to the sliding rod, and slides along the axial direction of the sliding rod, and the bottom of the connecting plate is fixedly connected to the first spring.

6. A subway platform door grating alarm device as claimed in claim 3, characterized in that: A gear groove is provided at the bottom of the mounting platform, and a connecting gear ring matched with the gear groove is provided at the top of the lower fixing cap.

7. A subway platform door grating alarm device as claimed in claim 3, characterized in that: Two damping rods arranged opposite to each other are fixedly welded on the periphery of the mounting platform, and protective plates are slidably mounted on the periphery of the damping rods. The two protective plates are respectively located on both sides of the grating alarm to prevent the grating alarm from touching external objects.

8. A subway platform door grating alarm device as claimed in claim 7, characterized in that: A limiting piece is welded to the end of the shock absorbing rod away from the mounting platform. The limiting piece is located on one side of the outer surface of the protection plate to prevent the protection plate from detaching from the far end of the shock absorbing rod.

9. A subway platform door grating alarm device as claimed in claim 7 or 8, characterized in that: A second spring is sleeved on the outer periphery of the shock absorbing rod, one end of the second spring is fixed to the surface of the mounting platform, and the other end is fixedly welded to the protection plate.

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