Railway vehicle maintenance trench anti-falling early warning device convenient to install

Abstract

The utility model relates to the technical field of railway vehicle maintenance, in particular to a railway vehicle maintenance trench anti-falling early warning device convenient to install, which comprises a main machine part, the main machine part is electrically connected with a sensing part, and when a person passes by, sensing light is shielded and an early warning main machine cannot receive a reflected signal, a motor is started, and the motor is started. A motor drives two moving blocks to be far away from each other through a two-way screw, so that a connecting rod rotates around a first fixing shaft and a second fixing shaft, then a baffle rotates around a fixing rod, an opening is opened, a rotating shaft is driven to rotate through meshing of a first bevel gear and a second bevel gear while the two-way screw rotates, and a transmission pipe ascends along the axis of the rotating shaft; when the transmission pipe ascends, the transmission pipe drives the workbench to ascend through the connecting rod and the supporting rod, so that the buzzer and the alarm lamp extend out of the opening to immediately give out buzzing sound and flicker a red light to give an alarm, and an operator is prompted to raise vigilance and enter a dangerous area to be prevented from accidentally falling into a trench to cause unnecessary injury.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle maintenance, in particular to a rail vehicle maintenance trench anti-falling warning device which is easy to install. Background Art

[0002] In the 150-meter-long maintenance track, there is only a trench about 5 meters long and 1 meter deep in the middle. Operators may easily ignore the location of the trench during work and accidentally fall into the trench, causing unnecessary injuries. In order to ensure the safety of the workers, it is necessary to develop a rail vehicle maintenance trench anti-fall warning device to monitor and warn of fall risks in real time. Utility Model Content

[0003] The purpose of the present invention is to provide an easy-to-install anti-fall warning device for a rail vehicle maintenance trench, so as to solve the problem raised in the above-mentioned background technology that workers are prone to accidentally falling into the trench. To achieve the above-mentioned purpose, the present invention provides the following technical solution: an easy-to-install anti-fall warning device for a rail vehicle maintenance trench, comprising a main unit, the main unit being electrically connected to a sensing unit, the top of the left side of the main unit being fixedly connected to the bottom of a driving unit by a bolt, the outer wall of the driving unit being threadedly connected to the inner wall of an opening and closing unit, both ends of the opening and closing unit being fixedly connected to the inner side wall of the main unit, and the sensing unit comprising an infrared emitter, an infrared sensor and a mounting plate.

[0004] The top of the center of the main part is fixedly connected to the bottom of the transmission part, the outer wall of the transmission part is meshed with the outer wall of the driving part, the outer wall of the transmission part is threadedly connected to the inner wall of the early warning part, the outer wall of one end of the early warning part is slidingly connected to the inner wall of the main part, the back of the main part is fixedly connected to the front of the mounting part, and the early warning part includes a transmission tube, a connecting rod, a support rod, a workbench, a buzzer and an alarm light.

[0005] Preferably, the main unit is composed of an early warning host, a support plate, a rotating hole, a slide groove and an opening. The inner wall of the early warning host is fixedly connected to the outer wall of the support plate, and a rotating hole is provided on the right inner wall of the early warning host close to the support plate, a slide groove is provided on the back inner wall of the early warning host close to the support plate, and an opening is provided on the top of the early warning host.

[0006] Preferably, the outer walls of the infrared emitter and the infrared sensor are fixedly welded to the outer wall of the mounting plate, and the infrared emitter and the infrared sensor are electrically connected to the early warning host.

[0007] Preferably, the driving member consists of a mounting seat, a motor, a bidirectional screw and a first bevel gear, the inner wall of the mounting seat is fixedly connected to the outer wall of the motor by bolts, and the output end of the motor is fixedly connected to one end of the bidirectional screw through a coupling, the outer wall of the other end of the bidirectional screw is rotatably connected to the inner wall of the rotating hole, and the outer wall of the center of the bidirectional screw is fixedly connected to the inner wall of the first bevel gear, and the bottom of the mounting seat is fixedly connected to the top of the left side of the support plate by bolts.

[0008] Preferably, the opening and closing part includes a moving block, a first fixed shaft, a connecting rod, a second fixed shaft, a fixed block, a baffle and a fixed rod, the inner side walls of the moving block are respectively fixedly connected to the two ends of the first fixed shaft, and the outer wall of the first fixed shaft is rotatably connected to the inner wall of the bottom end of the connecting rod, the inner wall of the top end of the connecting rod is rotatably connected to the outer wall of the second fixed shaft, and both ends of the second fixed shaft are fixedly connected to the inner side wall of the fixed block, the top of the fixed block is fixedly connected to the bottom of the baffle, and the inner wall of the baffle is rotatably connected to the outer wall of the fixed rod, the moving block, the first fixed shaft, the connecting rod, the second fixed shaft, the fixed block, the baffle and the fixed rod are all arranged in two symmetrical groups, and the inner walls of the two groups of moving blocks are threadedly connected to the outer wall of the bidirectional screw, and the two ends of the two groups of fixed rods are fixedly connected to the inner side wall of the opening.

[0009] Preferably, the transmission member consists of a rotating shaft, a second bevel gear, a limit block and a limit ring, the outer wall of the bottom end of the rotating shaft is fixedly connected to the inner wall of the second bevel gear, and the outer wall of the rotating shaft close to the second bevel gear is rotatably connected to the inner wall of the limit block, the outer wall of the rotating shaft close to the limit block is fixedly connected to the inner wall of the limit ring, and the outer wall of the second bevel gear is meshed with the outer wall of the first bevel gear, and the bottom of the limit block is fixedly connected to the top of the center of the support plate.

[0010] Preferably, the outer wall of the transmission tube is fixedly welded to the outer wall of one end of the connecting rod, and the outer wall of the other end of the connecting rod is slidably connected to the inner wall of the slide groove, the outer wall of the center of the connecting rod is fixedly welded to the outer wall of the bottom end of the support rod, and the top of the support rod is fixedly connected to the bottom of the workbench, a buzzer is fixedly installed on the top of the left side of the workbench, and an alarm light is fixedly installed on the top of the right side of the workbench, and the inner wall of the transmission tube is threadedly connected to the outer wall of the rotating shaft.

[0011] Preferably, the mounting component consists of a fixing plate, a fixing hole, a threaded rod, a locking knob, a splint and a guide rod. The fixing plate is provided with fixing holes on the inner walls near both sides, and the inner walls of the fixing holes are rotatably connected to the outer walls of one end of the threaded rod. A limiting disk is provided on the outer wall of the threaded rod near the fixing hole, and one end of the threaded rod is fixedly welded to the back side of the locking knob. The outer wall of the threaded rod is threadedly connected to the inner wall of the splint, and the inner wall of the splint near the threaded rod is slidably connected to the outer wall of the guide rod. One end of the guide rod is fixedly welded to the back side of the fixing plate, and the front side of the fixing plate is fixedly connected to the back side of the early warning host.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, when the sensing light is blocked when a person passes by and the early warning host cannot receive the reflected signal, the motor is started, and the motor drives the two moving blocks away from each other through the bidirectional screw, so that the connecting rod rotates around the first fixed axis and the second fixed axis, and then the baffle rotates around the fixed rod to open the opening. While the bidirectional screw rotates, the first bevel gear and the second bevel gear are engaged to drive the rotating shaft to rotate, so that the transmission tube rises along the axis of the rotating shaft. When the transmission tube rises, the workbench is driven to rise through the connecting rod and the support rod, so that the buzzer and the alarm light extend from the opening and immediately emit a buzzer sound and a flashing red light to alarm, prompting the operator to be vigilant and enter the danger zone to prevent accidental falling into the ditch and causing unnecessary injuries.

[0014] In the utility model, the infrared emitter and the infrared sensor are conveniently installed two meters away from both ends of the trench through the mounting plate. After the fixing plate is placed around the column to be installed, the threaded rod is driven to rotate by rotating the locking knob. Under the action of the thread, the splint moves along the direction of the guide rod, so that the splint and the fixing plate clamp the column to fix the early warning host. Through simple rotation, the staff can conveniently install the device.

[0015] In the present invention, when the warning host is not in an alarm state, the buzzer and the alarm light are hidden inside the warning host, which maintains the overall neatness and beauty, reduces the interference and damage risk of the alarm device from the external environment, and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is an exploded view of the present invention without the installation parts;

[0019] Figure 4 It is a cross-sectional view of the main component of the present utility model;

[0020] Figure 5 This is an exploded view of the opening and closing member of the present utility model;

[0021] Figure 6 This is an exploded view of the transmission part in the present utility model;

[0022] Figure 7 This is an exploded view of the mounting member in the present invention.

[0023] In the figure: 1. Main unit; 101. Warning unit; 102. Support plate; 103. Rotary hole; 104. Slide; 105. Opening; 2. Sensing unit; 201. Infrared emitter; 202. Infrared sensor; 203. Mounting plate; 3. Driving unit; 301. Mounting seat; 302. Motor; 303. Bidirectional screw; 304. First bevel gear; 4. Opening and closing unit; 401. Moving block; 402. First fixed shaft; 403. Connecting rod; 404. Second fixed shaft; 405. Fixed block; 406, baffle; 407, fixed rod; 5, transmission part; 501, rotating shaft; 502, second bevel gear; 503, limit block; 504, limit ring; 6, early warning part; 601, transmission tube; 602, connecting rod; 603, support rod; 604, workbench; 605, buzzer; 606, alarm light; 7, mounting part; 701, fixing plate; 702, fixing hole; 703, threaded rod; 704, locking knob; 705, splint; 706, guide rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] See also Figures 1 to 7 The utility model provides a technical solution: an anti-fall warning device for a rail vehicle maintenance trench that is easy to install, including a main part 1, the main part 1 is electrically connected to the sensing part 2, the top of the left side of the main part 1 is fixedly connected to the bottom of the driving part 3 by a bolt, the outer wall of the driving part 3 is threadedly connected to the inner wall of the opening and closing part 4, and both ends of the opening and closing part 4 are fixedly connected to the inner wall of the main part 1, and the sensing part 2 includes an infrared emitter 201, an infrared sensor 202 and a mounting plate 203.

[0026] The top of the center of the main part 1 is fixedly connected to the bottom of the transmission part 5, the outer wall of the transmission part 5 is meshed with the outer wall of the driving part 3, the outer wall of the transmission part 5 is threadedly connected to the inner wall of the early warning part 6, the outer wall of one end of the early warning part 6 is slidingly connected to the inner wall of the main part 1, the back of the main part 1 is fixedly connected to the front of the mounting part 7, and the early warning part 6 includes a transmission tube 601, a connecting rod 602, a support rod 603, a workbench 604, a buzzer 605 and an alarm light 606.

[0027] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the main unit 1 is composed of an early warning host 101, a support plate 102, a rotating hole 103, a slide groove 104 and an opening 105. The inner wall of the early warning host 101 is fixedly connected to the outer wall of the support plate 102, and a rotating hole 103 is provided on the right inner wall of the early warning host 101 close to the support plate 102, a slide groove 104 is provided on the back inner wall of the early warning host 101 close to the support plate 102, and an opening 105 is provided on the top of the early warning host 101.

[0028] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the outer walls of the infrared emitter 201 and the infrared sensor 202 are fixedly welded to the outer wall of the mounting plate 203, and the infrared emitter 201 and the infrared sensor 202 are electrically connected to the early warning host 101. The infrared emitter 201 and the infrared sensor 202 can be conveniently installed two meters away from both ends of the trench through the mounting plate 203.

[0029] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the driving member 3 is composed of a mounting base 301, a motor 302, a bidirectional screw 303 and a first bevel gear 304. The inner wall of the mounting base 301 is fixedly connected to the outer wall of the motor 302 by bolts, and the output end of the motor 302 is fixedly connected to one end of the bidirectional screw 303 through a coupling, the outer wall of the other end of the bidirectional screw 303 is rotatably connected to the inner wall of the rotating hole 103, and the outer wall of the center of the bidirectional screw 303 is fixedly connected to the inner wall of the first bevel gear 304, the bottom of the mounting base 301 is fixedly connected to the top of the left side of the support plate 102 by bolts, and the mounting base 301 increases the installation space for the motor 302.

[0030] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the opening and closing member 4 includes a moving block 401, a first fixed shaft 402, a connecting rod 403, a second fixed shaft 404, a fixed block 405, a baffle 406 and a fixed rod 407. The inner side walls of the moving block 401 are fixedly connected to the two ends of the first fixed shaft 402, and the outer wall of the first fixed shaft 402 is rotatably connected to the inner wall of the bottom end of the connecting rod 403. The inner wall of the top end of the connecting rod 403 is rotatably connected to the outer wall of the second fixed shaft 404, and both ends of the second fixed shaft 404 are fixedly connected to the inner side wall of the fixed block 405. The top of the fixed block 405 is fixedly connected to the bottom of the baffle 406, and the inner wall of the baffle 406 is connected to the fixed rod 407. 07 is rotatably connected, and the moving block 401, the first fixed axis 402, the connecting rod 403, the second fixed axis 404, the fixed block 405, the baffle 406 and the fixed rod 407 are all arranged in two symmetrical groups, and the inner walls of the two groups of moving blocks 401 are threadedly connected to the outer wall of the bidirectional screw 303, and the two ends of the two groups of fixed rods 407 are fixedly connected to the inner wall of the opening 105. The motor 302 drives the two moving blocks 401 away from each other through the bidirectional screw 303, so that the connecting rod 403 rotates around the first fixed axis 402 and the second fixed axis 404, and then the baffle 406 rotates around the fixed rod 407 to open the opening 105.

[0031] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the transmission member 5 consists of a rotating shaft 501, a second bevel gear 502, a limit block 503 and a limit ring 504. The outer wall of the bottom end of the rotating shaft 501 is fixedly connected to the inner wall of the second bevel gear 502, and the outer wall of the rotating shaft 501 close to the second bevel gear 502 is rotatably connected to the inner wall of the limit block 503. The outer wall of the rotating shaft 501 close to the limit block 503 is fixedly connected to the inner wall of the limit ring 504, and the outer wall of the second bevel gear 502 is meshed with the outer wall of the first bevel gear 304. The bottom of the limit block 503 is fixedly connected to the top of the center of the support plate 102. The limit block 503 prevents the rotating shaft 501 from shaking left and right when rotating, and the limit ring 504 prevents the rotating shaft 501 from falling off from the limit block 503.

[0032] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the outer wall of the transmission tube 601 is fixedly welded to the outer wall of one end of the connecting rod 602, and the outer wall of the other end of the connecting rod 602 is slidably connected to the inner wall of the slide groove 104, the outer wall of the center of the connecting rod 602 is fixedly welded to the outer wall of the bottom end of the support rod 603, and the top of the support rod 603 is fixedly connected to the bottom of the workbench 604, a buzzer 605 is fixedly installed on the top of the left side of the workbench 604, and an alarm light 606 is fixedly installed on the top of the right side of the workbench 604, the inner wall of the transmission tube 601 is threadedly connected to the outer wall of the rotating shaft 501, when a person passes by, the sensing light is blocked, and the early warning host 101 cannot receive the reflected signal, so that the buzzer 605 and the alarm light 606 extend from the opening 105 and immediately emit a buzzer sound and a flashing red light alarm, prompting the operator to be vigilant and enter the danger zone to prevent accidental falling into the ditch and causing unnecessary injuries.

[0033] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the mounting member 7 is composed of a fixing plate 701, a fixing hole 702, a threaded rod 703, a locking knob 704, a clamping plate 705 and a guide rod 706. The inner wall of the fixing plate 701 near both sides is provided with a fixing hole 702, and the inner wall of the fixing hole 702 is rotatably connected to the outer wall of one end of the threaded rod 703. A limit plate is provided on the outer wall of the threaded rod 703 near the fixing hole 702, and one end of the threaded rod 703 is fixedly welded to the back of the locking knob 704. The outer wall of the threaded rod 703 is threadedly connected to the inner wall of the clamping plate 705, and the clamping plate 705 is close to the threaded rod 70 3 is slidably connected to the outer wall of the guide rod 706, one end of the guide rod 706 is fixedly welded to the back of the fixing plate 701, and the front of the fixing plate 701 is fixedly connected to the back of the early warning host 101. After the fixing plate 701 is placed around the column to be installed, the threaded rod 703 is driven to rotate by rotating the locking knob 704. Under the action of the thread, the splint 705 moves along the direction of the guide rod 706, so that the splint 705 and the fixing plate 701 clamp the column to fix the early warning host 101. The staff can install the device conveniently through simple rotation.

[0034] The use method and advantages of the utility model: When the rail vehicle maintenance trench anti-fall warning device, which is easy to install, is in operation, the working process is as follows:

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the infrared emitter 201 and the infrared sensor 202 are conveniently installed two meters away from both ends of the trench through the mounting plate 203. When a person passes by, the sensing light is blocked. When the warning host 101 does not receive the reflected signal, the motor 302 is started. The motor 302 drives the two moving blocks 401 to move away from each other through the bidirectional screw 303, so that the connecting rod 403 rotates around the first fixed axis 402 and the second fixed axis 404, thereby rotating the baffle 406 around the fixed rod 407 to open the opening 105. While the bidirectional screw 303 rotates, the first bevel gear 304 engages with the second bevel gear 502 to drive the rotating shaft 501 to rotate, so that the transmission tube 601 rises along the axis of the rotating shaft 501. When the transmission tube 601 rises, the workbench 604 is driven to rise through the connecting rod 602 and the support rod 603, so that the buzzer 60 5 and the alarm light 606 extend from the opening 105 and immediately emit a buzzer sound and a flashing red light alarm, prompting the operator to be vigilant and enter the danger zone to prevent accidental falling into the ditch and causing unnecessary injuries. After the fixing plate 701 is placed around the column to be installed, the threaded rod 703 is driven to rotate by rotating the locking knob 704. Under the action of the thread, the clamping plate 705 moves along the direction of the guide rod 706, so that the clamping plate 705 and the fixing plate 701 clamp the column to fix the early warning host 101. Through simple rotation, the staff can easily install the device. When the early warning host 101 is not in the alarm state, the buzzer 605 and the alarm light 606 are hidden inside the early warning host 101, maintaining the overall neatness and beauty, reducing the interference and damage risk of the external environment on the alarm device, and extending its service life.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A rail vehicle maintenance trench anti-fall warning device that is easy to install, comprising a main unit (1), characterized in that: The main component (1) is electrically connected to the sensing component (2), the top of the left side of the main component (1) is fixedly connected to the bottom of the driving component (3) by a bolt, the outer wall of the driving component (3) is threadedly connected to the inner wall of the opening and closing component (4), and both ends of the opening and closing component (4) are fixedly connected to the inner wall of the main component (1), and the sensing component (2) includes an infrared emitter (201), an infrared sensor (202) and a mounting plate (203); The top of the center of the main component (1) is fixedly connected to the bottom of the transmission component (5), the outer wall of the transmission component (5) is meshedly connected to the outer wall of the driving component (3), the outer wall of the transmission component (5) is threadedly connected to the inner wall of the warning component (6), the outer wall of one end of the warning component (6) is slidably connected to the inner wall of the main component (1), the back of the main component (1) is fixedly connected to the front of the mounting component (7), and the warning component (6) includes a transmission tube (601), a connecting rod (602), a support rod (603), a workbench (604), a buzzer (605) and an alarm light (606).

2. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 1 is characterized in that: The main unit (1) is composed of an early warning host (101), a support plate (102), a rotating hole (103), a sliding groove (104) and an opening (105); the inner side wall of the early warning host (101) is fixedly connected to the outer side wall of the support plate (102); the early warning host (101) is provided with a rotating hole (103) on the right inner side wall close to the support plate (102); the early warning host (101) is provided with a sliding groove (104) on the back inner side wall close to the support plate (102); and the top of the early warning host (101) is provided with an opening (105).

3. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 2 is characterized in that: The outer walls of the infrared emitter (201) and the infrared sensor (202) are fixedly welded to the outer wall of the mounting plate (203), and the infrared emitter (201) and the infrared sensor (202) are electrically connected to the early warning host (101).

4. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 2 is characterized in that: The driving member (3) is composed of a mounting seat (301), a motor (302), a bidirectional screw (303) and a first bevel gear (304); the inner wall of the mounting seat (301) is fixedly connected to the outer wall of the motor (302) by bolts, and the output end of the motor (302) is fixedly connected to one end of the bidirectional screw (303) by a coupling; the outer wall of the other end of the bidirectional screw (303) is rotatably connected to the inner wall of the rotating hole (103), and the outer wall of the center of the bidirectional screw (303) is fixedly connected to the inner wall of the first bevel gear (304); the bottom of the mounting seat (301) is fixedly connected to the top of the left side of the support plate (102) by bolts.

5. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 4 is characterized in that: The opening and closing member (4) comprises a moving block (401), a first fixed shaft (402), a connecting rod (403), a second fixed shaft (404), a fixed block (405), a baffle (406) and a fixed rod (407); the inner side wall of the moving block (401) is fixedly connected to the two ends of the first fixed shaft (402), and the outer wall of the first fixed shaft (402) is rotatably connected to the inner wall of the bottom end of the connecting rod (403); the inner wall of the top end of the connecting rod (403) is rotatably connected to the outer wall of the second fixed shaft (404), and both ends of the second fixed shaft (404) are rotatably connected to the inner side wall of the fixed block (405). The top of the fixed block (405) is fixedly connected to the bottom of the baffle (406), and the inner wall of the baffle (406) is rotatably connected to the outer wall of the fixed rod (407). The moving block (401), the first fixed shaft (402), the connecting rod (403), the second fixed shaft (404), the fixed block (405), the baffle (406) and the fixed rod (407) are arranged in two symmetrical groups, and the inner walls of the two groups of moving blocks (401) are threadedly connected to the outer wall of the bidirectional screw (303), and both ends of the two groups of fixed rods (407) are fixedly connected to the inner wall of the opening (105).

6. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 4 is characterized in that: The transmission member (5) is composed of a rotating shaft (501), a second bevel gear (502), a limiting block (503) and a limiting ring (504); the outer wall of the bottom end of the rotating shaft (501) is fixedly connected to the inner wall of the second bevel gear (502), and the outer wall of the rotating shaft (501) close to the second bevel gear (502) is rotatably connected to the inner wall of the limiting block (503); the outer wall of the rotating shaft (501) close to the limiting block (503) is fixedly connected to the inner wall of the limiting ring (504), and the outer wall of the second bevel gear (502) is meshed with the outer wall of the first bevel gear (304); the bottom of the limiting block (503) is fixedly connected to the top of the center of the support plate (102).

7. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 6 is characterized in that: The outer wall of the transmission tube (601) is fixedly welded to the outer wall of one end of the connecting rod (602), and the outer wall of the other end of the connecting rod (602) is slidably connected to the inner wall of the slide groove (104). The outer wall of the center of the connecting rod (602) is fixedly welded to the outer wall of the bottom end of the support rod (603), and the top of the support rod (603) is fixedly connected to the bottom of the workbench (604). A buzzer (605) is fixedly installed on the top of the left side of the workbench (604), and an alarm light (606) is fixedly installed on the top of the right side of the workbench (604). The inner wall of the transmission tube (601) is threadedly connected to the outer wall of the rotating shaft (501).

8. The easy-to-install rail vehicle maintenance trench anti-fall warning device according to claim 2 is characterized in that: The mounting member (7) is composed of a fixing plate (701), a fixing hole (702), a threaded rod (703), a locking knob (704), a clamping plate (705) and a guide rod (706). The fixing plate (701) is provided with fixing holes (702) on the inner walls near both sides, and the inner walls of the fixing holes (702) are rotatably connected to the outer wall of one end of the threaded rod (703). A limit plate is provided on the outer wall of the threaded rod (703) near the fixing hole (702). One end of the threaded rod (703) is fixedly welded to the back of the locking knob (704), the outer wall of the threaded rod (703) is threadedly connected to the inner wall of the clamping plate (705), and the inner wall of the clamping plate (705) close to the threaded rod (703) is slidably connected to the outer wall of the guide rod (706), one end of the guide rod (706) is fixedly welded to the back of the fixing plate (701), and the front of the fixing plate (701) is fixedly connected to the back of the early warning host (101).

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