An elevator pit safety inspection device

Abstract

The utility model discloses a kind of elevator pit safety overhauling device, including mainboard, the both sides of mainboard are equipped with the side plate of bearing installation platform, the folding assembly for preventing dangerous goods from falling into pit when overhauling is equipped between two side plates, the lower end of the folding assembly is equipped with the lighting assembly for the illumination of pit, before carrying out elevator pit overhauling, start air cylinder, by a series of transmission, drive first guard plate and second guard plate from the both sides of mainboard upwards and outward rotation unfolding, finally form a reliable protective barrier in front of mainboard, effectively prevent tools, spare parts and other articles from falling into pit accidentally, simultaneously, the motor in lighting assembly can be opened, motor drives composite transmission, so that illuminating lamp revolves around motor shaft simultaneously with its angle also changes, so as to realize the illumination of different positions, different angles inside pit.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator safety maintenance equipment, specifically to an elevator pit safety inspection device. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the safe and stable operation of elevators is of paramount importance. The elevator pit is an important component of the elevator system, housing important parts such as buffers and speed governor tensioning devices, and therefore requires regular inspection and maintenance.

[0003] Currently, there is a general lack of dedicated and efficient safety protection equipment when inspecting elevator pits. Maintenance personnel typically need to carry their own temporary lighting tools, which not only have limited illumination range and fixed angles, but also require manual handling, significantly tying up their hands and affecting maintenance efficiency. More importantly, activity continues above and around the pit during maintenance, posing a high risk of tools, parts, and other items accidentally falling into the pit, potentially damaging equipment or even seriously threatening the personal safety of maintenance personnel. While simple barriers or warning tapes are sometimes used for isolation, these measures have limited protective area, are inconvenient to install, and lack stability, failing to provide reliable and comprehensive protection. Maintenance personnel sometimes use bulky fixed barriers or temporary obstacles to prevent items from falling into the pit; however, these devices are often rigid in structure, non-foldable, or extremely inconvenient to store, resulting in huge storage and transportation space requirements. Therefore, this art provides an elevator pit safety maintenance device to solve the problems mentioned in the background art. Utility Model Content

[0004] This utility model provides a safety inspection device for elevator pits, which aims to solve the problems mentioned in the background art.

[0005] An elevator pit safety inspection device includes a main board, with side plates on both sides of the main board to support the installation platform. A folding assembly is provided between the two side plates to prevent dangerous items from falling into the pit during inspection. The lower end of the folding assembly is provided with a lighting assembly to illuminate the pit.

[0006] Furthermore, the folding assembly includes a cylinder, which is fixedly connected to one of the side plates at an upper position away from the main board. The telescopic end of the cylinder is fixedly connected to a connecting shaft, and the connecting shaft is rotatably connected to a first connecting strip.

[0007] Furthermore, the first connecting strip is rotatably connected to a first rotating shaft on the side near the side plate, and an L-shaped fixing plate is fixedly connected to one end of the side of the two side plates that are close to each other. The first rotating shaft is fixedly connected to a first protective plate through the L-shaped fixing plate on the side near the side plate.

[0008] Furthermore, a second rotating shaft is fixedly connected to the side of the first protective plate away from the L-shaped fixing plate, and the side of the second rotating shaft away from the first protective plate is rotatably connected to one end of the center of the main board near the folding assembly. A connecting long shaft is rotatably connected to the upper part of the side of the L-shaped fixing plate away from the main board.

[0009] Furthermore, an L-shaped rotating shaft is rotatably connected to the end of the connecting long shaft away from the L-shaped fixed plate, and a second protective plate is fixedly connected to the lower end of the L-shaped rotating shaft away from the first protective plate.

[0010] Preferably, a second connecting strip is rotatably connected to one end of the side of the first protective plate away from the L-shaped fixing plate, and a third connecting strip is rotatably connected to one end of the second connecting strip away from the first protective plate. The third connecting strip is rotatably connected to one end of the side of the second protective plate away from the first connecting strip. Universal wheels are fixedly connected to the support of both the first and second protective plates near the second connecting strip, and the universal wheels contact the side of the main board near the lighting component.

[0011] Preferably, the lighting assembly includes a support plate, which is fixedly connected to the center of the main board near the folding assembly. A motor is fixedly connected to the center of the upper end of the support plate, and a connecting column is fixedly connected to the rotating end of the motor. Two L-shaped connecting strips are symmetrically fixedly connected to the outer side of the connecting column, and a connecting rod is fixedly connected between the two L-shaped connecting strips.

[0012] Furthermore, a fixed frame is fixedly connected between the two connecting rods, an irregular connecting strip is rotatably connected to the center of the lower end of the connecting column, a rotating column is rotatably connected to the lower end of the irregular connecting strip away from the central area, fixed shafts are fixedly connected to both sides of the fixed frame that are close to each other, and the two fixed shafts are respectively rotatably connected to both sides of the rotating column, and a lighting lamp is fixedly connected to the lower end of the rotating column.

[0013] Compared with the prior art, the beneficial effects of this utility model are: Before elevator pit maintenance, the cylinder is activated, extending and driving the first and second protective plates to rotate upwards and outwards from both sides of the main board via a series of transmissions including the connecting shaft, the first connecting bar, and the first rotating shaft. This ultimately forms a reliable protective barrier in front of the main board, effectively preventing tools, parts, and other items from accidentally falling into the pit. Simultaneously, the motor in the lighting assembly is activated, driving the connecting column to rotate. Through a composite transmission of the L-shaped connecting bar, connecting rod, fixing frame, and irregular connecting bar, the lighting lamp's angle changes as it revolves around the motor shaft. This provides illumination to different locations and angles within the pit, offering ample and flexible light sources for maintenance work, greatly improving the safety and convenience of the operation. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a safety inspection device for elevator pits; Figure 2 This is a schematic diagram of a safety inspection device for elevator pits from another perspective. Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the connection structure of the second connecting strip; Figure 5 This is a schematic diagram of the three-dimensional structure of the lighting component.

[0015] The components are as follows: 1-Main board; 2-Side plate; 3-Folding assembly; 301-Cylinder; 302-Connecting shaft; 303-First connecting strip; 304-First rotating shaft; 305-L-shaped fixing plate; 306-First protective plate; 307-Second rotating shaft; 308-Connecting long shaft; 309-L-shaped rotating shaft; 3010-Second protective plate; 3011-Second connecting strip; 3012-Third connecting strip; 3013-Universal wheel; 4-Lighting assembly; 401-Bearing plate; 402-Motor; 403-Connecting column; 404-L-shaped connecting strip; 405-Connecting rod; 406-Fixing frame; 407-Irregular connecting strip; 408-Rotating column; 409-Fixing shaft; 4010-Lighting lamp. Detailed Implementation

[0016] This utility model provides a safety inspection device for elevator pits. Figures 1-5 As shown, this utility model provides a technical solution: an elevator pit safety inspection device, including a main board 1, with side plates 2 on both sides of the main board 1 to support the installation platform, and a folding component 3 between the two side plates 2 to prevent dangerous items from falling into the pit during inspection, and a lighting component 4 at the lower end of the folding component 3 to illuminate the pit.

[0017] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, the folding assembly 3 includes a cylinder 301, which is fixedly connected to one of the side plates 2 at the upper part away from the main board 1. The telescopic end of the cylinder 301 is fixedly connected to a connecting shaft 302, and the connecting shaft 302 is rotatably connected to a first connecting strip 303.

[0018] The folding assembly 3, as the core protective part of the entire safety device, is powered by a cylinder 301. The cylinder 301 is firmly installed on the upper outer side of one of the side plates 2. When the cylinder 301 is activated, its telescopic rod will move linearly, pushing the connecting shaft 302 fixedly connected to it. The connecting shaft 302 then transmits this linear motion to the first connecting bar 303 rotatably connected to it, thereby converting the linear thrust into the rotational motion of the first connecting bar 303, providing the initial power for the unfolding and retraction of the entire folding assembly 3.

[0019] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, the first connecting strip 303 is rotatably connected to the first rotating shaft 304 on the side near the side plate 2, and an L-shaped fixing plate 305 is fixedly connected to one end of the side of the two side plates 2 that are close to each other. The first rotating shaft 304 is fixedly connected to the first protective plate 306 through the L-shaped fixing plate 305 on the side near the side plate 2.

[0020] The first connecting bar 303 is connected at one end near the side plate 2 via a first rotating shaft 304. This first rotating shaft 304 is a key motion conversion component, passing through an L-shaped fixing plate 305 pre-fixed to the upper inner side of both side plates 2. After passing through the L-shaped fixing plate 305, the end of the first rotating shaft 304 is fixed to the first protective plate 306. Therefore, when the first connecting bar 303 moves under the push of the cylinder 301, it forces the first rotating shaft 304 to rotate in the L-shaped fixing plate 305, thereby directly driving the first protective plate 306 to rotate around the axis, realizing its upright or flattened action.

[0021] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, a second rotating shaft 307 is fixedly connected to the side of the first protective plate 306 away from the L-shaped fixing plate 305, and the side of the second rotating shaft 307 away from the first protective plate 306 is rotatably connected to the center of the side of the main board 1 near the folding assembly 3. A connecting long shaft 308 is rotatably connected to the upper side of the side of the L-shaped fixing plate 305 away from the main board 1.

[0022] To ensure the stability of the first protective plate 306's movement, a second rotating shaft 307 is connected to the main plate 1 on the side away from the L-shaped fixed plate 305. This second rotating shaft 307 forms the second fulcrum of the first protective plate 306, allowing it to rotate smoothly around the shaft, forming a structure similar to a four-bar linkage, thus avoiding the instability of single-point support. At the same time, a connecting long shaft 308 is rotatably connected to the upper end of the side of the L-shaped fixed plate 305 away from the main plate 1. The function of this connecting long shaft 308 is to transmit the movement state of the first protective plate 306 to the subsequent second protective plate 3010, serving as a bridge to achieve linkage between the two protective plates.

[0023] As one implementation method in this embodiment, please refer to Figure 2 As shown, an L-shaped rotating shaft 309 is rotatably connected to one end of the long shaft 308 away from the L-shaped fixed plate 305. One lower end of the L-shaped rotating shaft 309 is fixedly connected to one end of the first protective plate 306 away from the L-shaped fixed plate 305. A second protective plate 3010 is fixedly connected to one lower end of the L-shaped rotating shaft 309 away from the first protective plate 306.

[0024] The other end of the connecting long shaft 308 is connected to an L-shaped rotating shaft 309. This L-shaped rotating shaft 309 is a key linkage component. One arm of it is fixedly connected to the end edge of the first protective plate 306, and the other arm is fixedly connected to the second protective plate 3010. When the first protective plate 306 rotates under the drive of the cylinder 301, the movement of its end is directly transmitted to the second protective plate 3010 through the L-shaped rotating shaft 309, ensuring that the two plates move synchronously and in a coordinated manner during unfolding and folding.

[0025] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, a second connecting strip 3011 is rotatably connected to one end of the first protective plate 306 on the side away from the L-shaped fixing plate 305. A third connecting strip 3012 is rotatably connected to one end of the second connecting strip 3011 on the side away from the first protective plate 306. The third connecting strip 3012 is rotatably connected to one end of the second protective plate 3010 on the side away from the first connecting strip 303. A caster wheel 3013 is fixedly connected to the support of both the first protective plate 306 and the second protective plate 3010 on the side near the second connecting strip 3011. The caster wheel 3013 contacts the side of the main board 1 near the lighting component 4.

[0026] To further enhance the integrity and rigidity of the two protective plates during movement, an auxiliary linkage mechanism consisting of a second connecting bar 3011 and a third connecting bar 3012 is installed between the first protective plate 306 and the second protective plate 3010. One end of the second connecting bar 3011 is rotatably connected to the first protective plate 306, and the other end is rotatably connected to the third connecting bar 3012. The other end of the third connecting bar 3012 is rotatably connected to the second protective plate 3010. These three components together form an additional parallel four-bar linkage mechanism, which can effectively prevent the protective plates from bending when unfolded to bear weight. In addition, casters 3013 are installed at the bottom support points of the first and second protective plates 3010. These casters 3013 directly support the surface of the main plate 1, bearing part of the weight of the protective plates, reducing the load on the rotating shaft, and ensuring smooth and unobstructed sliding of the protective plates, while avoiding direct friction and wear between the protective plates and the surface of the main plate 1.

[0027] As one implementation method in this embodiment, please refer to Figure 5 As shown, the lighting component 4 includes a support plate 401, which is fixedly connected to the center of the main board 1 near the folding component 3. A motor 402 is fixedly connected to the center of the upper end of the support plate 401. A connecting post 403 is fixedly connected to the rotating end of the motor 402. Two L-shaped connecting strips 404 are symmetrically fixedly connected to the outer side of the connecting post 403. A connecting rod 405 is fixedly connected between the two L-shaped connecting strips 404.

[0028] The lighting component 4 is independently installed below the folding component 3. Its foundation is a support plate 401 fixed to the center of the main board 1, providing a stable mounting platform for the entire lighting mechanism. A motor 402 is installed at the center of the upper surface of the support plate 401, serving as the power source for adjusting the lighting angle. The output shaft of the motor 402 faces downward and is fixedly connected to a vertical connecting column 403. Two L-shaped connecting strips 404 are symmetrically fixed to the outer side of the connecting column 403. These two L-shaped connecting strips 404 are further reinforced by a connecting rod 405, forming a robust rotating frame driven by the motor 402.

[0029] As one implementation method in this embodiment, please refer to Figure 5 As shown, a fixed frame 406 is fixedly connected between the two connecting rods 405. An irregular connecting strip 407 is rotatably connected to the center of the lower end of the connecting column 403. A rotating column 408 is rotatably connected to the lower end of the irregular connecting strip 407 away from the central area. Fixed shafts 409 are fixedly connected to both sides of the fixed frame 406 that are close to each other. The two fixed shafts 409 are rotatably connected to both sides of the rotating column 408. A lighting lamp 4010 is fixedly connected to the lower end of the rotating column 408.

[0030] The two connecting rods 405 mentioned above jointly support and rotatably connect to a fixed frame 406. At the same time, at the lower center of the connecting column 403, an irregular connecting strip 407 is rotatably connected. The irregular connecting strip 407 itself has an inclined angle that generates a deflection torque. At the lower end of the irregular connecting strip 407, at a position off-center, a rotating column 408 is fixed. The rotating column 408 and the fixed shaft 409 are coaxial to prevent random swinging. The inner ends of the fixed frame 406 are connected to the two sides of the rotating column 408 through the fixed shaft 409. When the motor 402 drives the connecting column 403, the L-shaped connecting strip 404 and the connecting rod 405 to rotate as a whole, the fixed frame 406 will revolve accordingly. However, due to the restraining effect of the irregular connecting strip 407, the rotating column 408 and the lighting lamp 4010 below it will not simply follow the revolution, but will rotate on its own axis under the constraint of the fixed frame 406, thus realizing a complex compound motion.

[0031] When maintenance begins and the protective measures need to be deployed, the telescopic rod of cylinder 301 extends outward. This linear thrust acts directly on the connecting shaft 302, which is fixedly connected to it. The connecting shaft 302 transmits the thrust to the first connecting bar 303, which is rotatably connected to it, forcing the first connecting bar 303 to rotate around its connection point with the connecting shaft 302. Immediately afterwards, the rotational motion of the first connecting bar 303 is converted into torque through the first rotating shaft 304 at its other end. The first rotating shaft 304 passes through a hole or bearing on the L-shaped fixed plate 305 and transmits the torque to the first protective plate 306, which is fixedly connected to it. Thus, the first protective plate 306 begins to rotate away from the main board 1, using the mounting point of the second rotating shaft 307 on the main board 1 as a fulcrum. The upward rotation of the first protective plate 306 drives the L-shaped rotating shaft 309 fixed at its end to move as well. The L-shaped rotating shaft 309, as a rigid component, forcibly transmits this motion to the second protective plate 3010 fixed to it. At the same time, the connecting shaft 308 also rotates, playing a role in auxiliary connection and stability. In order to ensure that the two protective plates remain parallel and stable during the unfolding process, the auxiliary linkage composed of the second connecting bar 3011 and the third connecting bar 3012 begins to play a role. As the first protective plate 306 is lifted, it pulls the second connecting bar 3011, which in turn pushes the third connecting bar 3012. The third connecting bar 3012 then applies a force to the second protective plate 3010. This force works in conjunction with the force transmitted by the L-shaped rotating shaft 309 to ensure that the two protective plates unfold smoothly and synchronously to the vertical protective position like a folding door. During this process, the universal wheels 3013 installed at the bottom of the protective plate roll along the surface of the main plate 1, effectively supporting the weight of the protective plate and making the unfolding action more effortless and smooth.

[0032] When the lighting angle needs to be adjusted, motor 402 is started. The output shaft of motor 402 drives the connecting column 403, which is fixedly connected to it, to rotate at a constant speed. The rotation of the connecting column 403 directly drives the two L-shaped connecting strips 404 symmetrically fixed on its outer side and the connecting rods 405 fixed at the ends of the two L-shaped connecting strips 404 to revolve around the axis of the connecting column 403 with a fixed radius. The connecting rods 405 are simultaneously rotatably connected to the fixed frame 406. Therefore, the revolution of the connecting rods 405 will cause the entire fixed frame 406 to move accordingly. However, the movement of the fixed frame 406 is not simply following the revolution, because it is also constrained by the irregular connecting strips 407. The upper end of the irregular connecting strip 407 is rotatably connected to the non-center point of the lower end face of the connecting column 403, and its lower end is fixed to the rotating column 408. The rotating column 408 is fixed to both sides of the fixed frame 406 through the fixed shafts 409 on both sides. When the connecting column 403 rotates, the irregular connecting strip 407 will pull or push the fixed frame 406, forcing the fixed frame 406 to rotate around the connecting rod 405 while revolving around the connecting rod 405. This rotational motion is directly transmitted to the rotating column 408 and the lighting lamp 4010 installed at its lower end through the fixed frame 406 and the fixed shafts 409, so that the lighting lamp 4010 can rotate at multiple angles and expand the lighting range.

[0033] The above provides a detailed description of the elevator pit safety inspection device provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A safety inspection device for elevator pits, characterized in that, Includes a motherboard (1), with side plates (2) on both sides of the motherboard (1) to support the installation platform. A folding assembly (3) is provided between the two side plates (2) to prevent dangerous items from falling into the pit during maintenance. A lighting assembly (4) is provided at the lower end of the folding assembly (3) to illuminate the pit.

2. The elevator pit safety inspection device according to claim 1, characterized in that, The folding assembly (3) includes a cylinder (301), which is fixedly connected to one of the side plates (2) on the upper side away from the main board (1). The telescopic end of the cylinder (301) is fixedly connected to a connecting shaft (302), and the connecting shaft (302) is rotatably connected to a first connecting strip (303).

3. The elevator pit safety inspection device according to claim 2, characterized in that, The first connecting strip (303) is rotatably connected to the first rotating shaft (304) on the side near the side plate (2). An L-shaped fixing plate (305) is fixedly connected to one end of the side of the two side plates (2) that are close to each other. The first rotating shaft (304) is fixedly connected to the first protective plate (306) through the L-shaped fixing plate (305) on the side near the side plate (2).

4. The elevator pit safety inspection device according to claim 3, characterized in that, The first protective plate (306) is fixedly connected to a second rotating shaft (307) on the side away from the L-shaped fixing plate (305), and the second rotating shaft (307) is rotatably connected to the side of the main board (1) near the center of the folding assembly (3) on the side away from the first protective plate (306). The L-shaped fixing plate (305) is rotatably connected to a connecting long shaft (308) on the upper side of the side away from the main board (1).

5. The elevator pit safety inspection device according to claim 4, characterized in that, The end of the connecting long shaft (308) away from the L-shaped fixed plate (305) is rotatably connected to an L-shaped rotating shaft (309). The lower end of the L-shaped rotating shaft (309) is fixedly connected to the end of the first protective plate (306) away from the L-shaped fixed plate (305). The lower end of the L-shaped rotating shaft (309) away from the first protective plate (306) is fixedly connected to a second protective plate (3010).

6. The elevator pit safety inspection device according to claim 4, characterized in that, The first protective plate (306) is rotatably connected to a second connecting strip (3011) at one end of the side away from the L-shaped fixing plate (305). The second connecting strip (3011) is rotatably connected to a third connecting strip (3012) at one end away from the first protective plate (306). The third connecting strip (3012) is rotatably connected to one end of the side of the second protective plate (3010) away from the first connecting strip (303). The first protective plate (306) and the second protective plate (3010) are both fixedly connected to a universal wheel (3013) at the support of the side of the first protective plate (306) and the second protective plate (3010) near the second connecting strip (3011). The universal wheel (3013) contacts the side of the main board (1) near the lighting component (4).

7. The elevator pit safety inspection device according to claim 1, characterized in that, The lighting assembly (4) includes a support plate (401), which is fixedly connected to the center of the main board (1) near the folding assembly (3). A motor (402) is fixedly connected to the center of the upper end of the support plate (401). A connecting column (403) is fixedly connected to the rotating end of the motor (402). Two L-shaped connecting strips (404) are symmetrically fixedly connected to the outside of the connecting column (403). A connecting rod (405) is fixedly connected between the two L-shaped connecting strips (404).

8. The elevator pit safety inspection device according to claim 7, characterized in that, A fixed frame (406) is fixedly connected between the two connecting rods (405). An irregular connecting strip (407) is rotatably connected to the center of the lower end of the connecting column (403). A rotating column (408) is rotatably connected to the lower end of the irregular connecting strip (407) away from the central area. Fixed shafts (409) are fixedly connected to both sides of the fixed frame (406) that are close to each other. The two fixed shafts (409) are rotatably connected to both sides of the rotating column (408). A lighting lamp (4010) is fixedly connected to the lower end of the rotating column (408).

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