Labor-saving type hole safety cover plate for hoisting

Abstract

The present application relates to a labor-saving type safety maintenance cover plate for a lifting hole, which is applied to the field of maintenance cover plates. The crack detection unit is provided to monitor the cracks in real time when multiple cover plate units are in a horizontal state. When there is a crack on the cover plate unit and the crack depth reaches the air guide layer, the air guide layer will leak, and the saturation degree of the gas detection rubber strip will decrease. When multiple cover plate units are horizontally covered, the gas leakage will be accelerated after the gas detection rubber strip is extruded, and the data on the pressure sensor will gradually decrease or even disappear. The stability of the pressure sensor data can be used to effectively monitor the cracks and avoid safety hazards caused by the damage of the strength of the cover plate unit. In addition, the early warning unit is used in combination. When the cover plate unit is horizontally covered, the early warning unit is always on. When there is a cracking situation that affects safety, the early warning unit will be extinguished, and people or vehicles passing through the place can be directly warned, further reducing safety hazards.

Description

TECHNICAL FIELD

[0001] The present application relates to a safety maintenance cover plate, in particular to a labor-saving type hanging hole safety maintenance cover plate applied to the field of maintenance cover plate. BACKGROUND

[0002] The hanging hole refers to a hole reserved in a closed plane for lifting objects, the hanging hole slot refers to an opening reserved on the concrete floor for installing the hanging hole cover plate, and the hanging hole cover plate refers to a steel structure cover plate type safety protection device installed on the hanging hole slot, mainly including a frame, a door plate and a guardrail.

[0003] The labor-saving type hanging hole safety maintenance cover plate refers to a safety protection device that realizes the opening and closing of the door plate through labor-saving methods such as heavy hammer balance, spring force storage and electric power assistance, and forms a safety protection guardrail when it is opened.

[0004] When the lifting operation is not performed, the maintenance cover plate is closed in a horizontal state, thereby covering the hanging hole, and the cover plate needs to have a certain bearing capacity, and after covering the hanging hole, it needs to be able to meet the passing of workers or vehicles, however, due to the strength of the cover plate, wear, extrusion of heavy objects and the like, cracking or even breaking may occur after a long time of work, and the existing technology lacks a crack monitoring function, and workers can only realize it when the crack is large enough to cause obvious differences on the cover plate, which causes a great safety hazard. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the present application is that the existing maintenance cover plate does not have a crack monitoring function, and it is difficult to realize the crack in time, which causes a great safety hazard.

[0006] To solve the above problems, the present application provides a labor-saving type hanging hole safety maintenance cover plate, which comprises a frame installed on the hanging hole, the left and right inner walls and the front and rear inner walls of the frame are respectively provided with horizontal cover strips and vertical cover strips through electric shafts, and folding fences are further installed at the front and rear ends of the frame, the folding fences are located below the horizontal cover strips, a support frame is fixedly connected to the lower end of the frame, the left and right ends of the support frame are not coincident with the horizontal cover strips, electric sliding rails are installed above the left and right ends of the support frame, folding cover plates are installed on the front and rear inner walls of the frame through electric shafts, the folding cover plates comprise a plurality of cover plate units which are connected in pairs, and one of the bottom parts of the cover plate units is connected with the electric sliding rail.

[0007] The crack detection unit is arranged on each of the plurality of cover plate units, and comprises a gas detection rubber strip arranged at the end of the cover plate unit and a sensing unit arranged in the cover plate unit.

[0008] In the labor-saving type safety inspection cover plate for the hole for hanging objects, the crack detection unit is arranged, so that the crack of the cover plate unit can be monitored in real time when the plurality of cover plate units are in a horizontal state, and the cracking condition can be found in time, and the safety hazard caused by the damage of the strength of the cover plate unit can be effectively avoided.

[0009] As a further improvement of the present application, two gas detection rubber strips are arranged, and the monitoring cavity is not located at the middle of the air guide layer, and the two adjacent monitoring cavities are staggered with each other.

[0010] As a further improvement of the present application, the gas detection rubber strip and the air guide layer are located above the middle of the cover plate unit, and a reinforcing block is further arranged in the air guide layer, the reinforcing block is a hard multi-through hole structure, and the thickness of the reinforcing block is consistent with the longitudinal span of the air guide layer.

[0011] As a further improvement of the present application, the gas sensing assembly comprises a partition plate fixedly connected to the middle of the monitoring cavity, two pressure sensors respectively arranged at the left and right ends of the partition plate, and two bulging diaphragms respectively fixedly connected to the two openings of the monitoring cavity, and the bulging diaphragm is located at the transverse middle line position of the partition plate and the opening of the monitoring cavity.

[0012] As a further improvement of the present application, the partition plate is a hard sealing structure, and the partition plate separates the air guide layers on both sides of the monitoring cavity into independent spaces, the bulging diaphragm is an elastic transparent structure, and when the plurality of cover plate units are in a horizontal state, the bulging diaphragm is in contact with the corresponding pressure sensor.

[0013] As another improvement of the present application, only one gas detection rubber strip is arranged at one end of the front and rear ends of the cover plate unit, and a sealing groove is dug at the other end of the front and rear ends of the cover plate unit, the sealing groove and the transversely adjacent gas detection rubber strip are matched with each other, a warning unit is arranged on each of the two cover plate units close to the front and rear edges of the frame, a wiring unit is arranged on each of the plurality of cover plate units, and when the plurality of wiring units are connected in series, the circuit of the two warning units is turned on.

[0014] As a further improvement of the present application, the radius of the sealing groove and the gas detection rubber strip is consistent, and the cross-sectional angle of the sealing groove is smaller than that of the gas detection rubber strip.

[0015] As a further improvement of the present application, the wiring unit comprises a plurality of wires respectively connected to the cover plate units, and the two ends of the wire respectively extend to the surface of the gas detection rubber strip and the inner wall of the sealing groove.

[0016] As a supplement to the improved application, the early warning unit includes an early warning groove opened on the cover plate unit, a lamp strip is installed at the bottom end of the early warning groove, the lamp strip is connected with the conductor on the cover plate unit, a transparent protection plate is fixedly connected at the opening part of the early warning groove, and the early warning groove is staggered with the air guide layer. In summary, through the crack detection unit, the crack of the cover plate unit can be monitored in real time when the cover plate unit is in a horizontal state. When there is a crack on the cover plate unit and the crack depth reaches the air guide layer, the air guide layer will leak, at this time, the saturation degree of the gas detection rubber strip will decrease. When the cover plate unit is horizontally laid, the gas detection rubber strip will be extruded, which will accelerate the leakage and cause the data on the pressure sensor to gradually decrease or even disappear. According to the stability of the pressure sensor data, the crack can be effectively monitored, and the safety hidden danger caused by the damage of the strength of the cover plate unit can be effectively avoided. In addition, in cooperation with the early warning unit, when the cover plate unit is horizontally covered, the early warning unit is always on, and when there is a cracking condition that affects safety, the early warning unit will be extinguished, which can directly warn people or vehicles passing through the place, further reducing the safety hidden danger. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the use process of the first embodiment of the application;

[0018] Figure 2 It is a partial bottom view schematic diagram of the first embodiment of the application;

[0019] Figure 3 It is a schematic diagram when the first embodiment of the application is unfolded to form a safety fence;

[0020] Figure 4 It is a schematic diagram of the folding process of the folding cover plate of the first embodiment of the application;

[0021] Figure 5 It is a side view of the cover plate unit of the first embodiment of the application;

[0022] Figure 6 It is a schematic diagram of A in the first embodiment of the application; Figure 5

[0023] Figure 7 It is a top view sectional view of the cover plate unit of the first embodiment of the application;

[0024] Figure 8 It is a schematic diagram when the two cover plate units of the second embodiment of the application are restored to be horizontal from the folded state;

[0025] Figure 9 It is a top view sectional view of the cover plate unit of the second embodiment of the application;

[0026] Figure 10 ​A cross-sectional view of the early warning unit of the second embodiment of the present application;

[0027] Figure 11 A comparison of the early warning unit of the second embodiment of the present application in different states of the folding cover plate

[0028] Figure label explanation: 1 frame, 201 horizontal cover bar, 202 vertical cover bar, 3 cover plate unit, 4 support frame, 8 folding fence, 51 gas detection rubber strip, 52 gas guide layer, 53 monitoring cavity, 54 reinforcing block, 501 sealing groove, 6 gas sensing assembly, 61 partition, 62 pressure sensor, 63 bulging diaphragm, 7 early warning unit, 71 protective plate, 72 lamp strip. DETAILED DESCRIPTION

[0029] The two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0030] First embodiment:

[0031] Figures 1-2 As shown, a labor-saving type safety maintenance cover plate for a hoisting hole includes a frame 1 mounted at the opening of the hoisting hole, horizontal cover bars 201 and vertical cover bars 202 mounted on the left and right inner walls and the front and rear inner walls of the frame 1 through electric rotating shafts, respectively, folding fences 8 mounted at the front and rear ends of the frame 1, the folding fences 8 located below the horizontal cover bars 201, a support frame 4 fixedly connected to the lower end of the frame 1, the left and right ends of the support frame 4 not coinciding with the horizontal cover bars 201, electric sliding rails mounted above the left and right ends of the support frame 4, folding cover plates mounted on the front and rear inner walls of the frame 1 through electric rotating shafts, the folding cover plates including a plurality of cover plate units 3 connected to each other in pairs, one of the bottom of the cover plate units 3 connected to the electric sliding rails; as Figure 4 When it is necessary to open the maintenance cover plate for hoisting operation, the cover plate units 3 can be folded and rotated through the electric sliding rails and the electric rotating shafts until they are vertically stacked at the ends of the frame 1.

[0032] In use, as Figure 1 , the horizontal cover bars 201 and the vertical cover bars 202 are first controlled to open through the electric rotating shafts, then the cover plate units 3 are controlled to fold vertically towards the ends, and finally the plurality of 5 is controlled to unfold upwards, as Figure 3 , so as to form a safety fence at the hoisting hole, thereby improving safety.

[0033] As Figure 5 and Figure 7 , a crack detection unit is arranged on each of the plurality of cover plate units 3, the crack detection unit including a gas detection rubber strip 51 mounted at the end of the cover plate unit 3 and a sensing unit located in the cover plate unit 3, the sensing unit including a plurality of gas guide layers 52 and a monitoring cavity 53 located between the two ends of the gas guide layers 52, the monitoring cavity 53 fixedly connected with a gas sensing assembly 6, as Figure 6The gas sensing assembly 6 comprises a partition plate 61 fixedly connected to the middle part of the monitoring cavity 53, two pressure sensors 62 respectively installed at the left and right ends of the partition plate 61, and two bulging diaphragms 63 respectively fixedly connected to the two opening parts of the monitoring cavity 53, the bulging diaphragm 63 is located at the transverse center line position of the partition plate 61 and the opening part of the monitoring cavity 53, the gas testing rubber strip 51 and the gas guide layer 52 are communicated, and the gas testing rubber strip 51 and the gas guide layer 52 are filled with compressed air, the amount of compressed air is maintained when the gas testing rubber strip 51 is not extruded, the bulging diaphragm 63 does not contact the pressure sensor 62, and in the horizontal state, because the end parts of the plurality of cover plate units 3 contact each other in pairs, the gas testing rubber strip 51 is extruded, the compressed air in the gas testing rubber strip 51 extrudes the bulging diaphragm 63, and the bulging diaphragm 63 is deformed towards the pressure sensor 62, thereby extruding the pressure sensor 62, and the pressure sensor 62 generates obvious stress data. When the cover plate unit 3 cracks and the crack penetrates into the gas guide layer 52, air leakage will occur. When the cover plate unit 3 is horizontal, the stress data on the pressure sensor 62 that should originally generate stress data will be smaller than expected, or even no stress data will be generated. In this case, it indicates that there is a safety hazard of crack, and the staff can determine the approximate position of the crack according to the corresponding pressure sensor 62 to perform maintenance, thereby effectively avoiding a large safety hazard.

[0034] The gas testing rubber strip 51 is provided in two, and the monitoring cavity 53 is not located in the middle part of the gas guide layer 52, and the adjacent two monitoring cavities 53 are staggered with each other, so that the spacing between the plurality of monitoring cavities 53 is relatively large, and it is not easy to greatly affect the strength of the cover plate unit 3 due to being too close.

[0035] The gas testing rubber strip 51 and the gas guide layer 52 are located above the middle part of the cover plate unit 3, so that the thickness of the cover plate unit 3 located above the gas guide layer 52 is small, and when a crack is generated, the crack can be monitored by the crack detection unit when the crack is relatively shallow, so that the small crack at this time is not easy to cause the rupture of the cover plate unit 3, compared with the prior art in which the crack is large and can be detected, the safety hazard can be effectively reduced. The reinforcing block 54 is also placed in the gas guide layer 52, the reinforcing block 54 is a hard multi-through hole structure, the gas can pass through the reinforcing block 54, and the thickness of the reinforcing block 54 is consistent with the longitudinal span of the gas guide layer 52. The reinforcing block 54 is used to fill the internal space of the gas guide layer 52, so that the strength of the cover plate unit 3 at the gas guide layer 52 is not easy to be too small under the supplement of the reinforcing block 54.

[0036] The partition plate 61 is a hard sealing structure, and the partition plate 61 separates the air guide layer 52 on both sides of the monitoring cavity 53 into independent spaces, and the air sensing assembly 6 is used as a boundary, and the air guide layer 52 on both sides is matched with the corresponding gas detection rubber strip 51, and the crack on the surface of the cover plate unit 3 can be monitored independently, so that the crack area can be reduced after the crack is judged according to the data change of the pressure sensor 62, and the difficulty of maintenance and repair of the staff after the crack is reduced. The bulging diaphragm 63 is an elastic transparent structure, and when the plurality of cover plate units 3 are in a horizontal state, the bulging diaphragm 63 is in contact with the corresponding pressure sensor 62, that is, when the plurality of cover plate units 3 are horizontal, the cover plate unit 3 extrudes the gas detection rubber strip 51, which can further push the bulging diaphragm 63, so that it extrudes the pressure sensor 62, so that stable stress data can be generated.

[0037] In summary, through the crack detection unit, the crack of the plurality of cover plate units 3 can be monitored in real time when the plurality of cover plate units 3 are in a horizontal state. When there is a crack on the cover plate unit 3, and the crack depth reaches the air guide layer 52, the air guide layer 52 will leak, and at this time the saturation degree of the gas detection rubber strip 51 will decrease. When the plurality of cover plate units 3 are horizontally laid, the gas detection rubber strip 51 will be extruded after being extruded, which will accelerate the leakage, resulting in that the data on the pressure sensor 62 will gradually decrease or even disappear. According to the stability of the data of the pressure sensor 62, the crack can be effectively monitored, and the safety hidden danger caused by the damage of the strength of the cover plate unit 3 can be effectively avoided. In addition, the pressure sensor 62 with abnormal data can roughly locate the specific position of the crack, effectively reducing the difficulty of maintenance. In addition, in cooperation with the setting of the early warning unit 7, the cracking condition is detected. In addition, in cooperation with the effect of the early warning unit 7, when the cover plate unit 3 is horizontally covered, the early warning unit 7 is always on. When there is a cracking condition that affects safety, the early warning unit 7 will be extinguished, which can directly warn the person or vehicle passing through the place, and further reduce the safety hidden danger.

[0038] Second embodiment:

[0039] The present embodiment is based on the first embodiment, and adds a warning unit 7 and related structures, and makes some adaptive modifications to the crack detection unit, and the remaining parts remain the same as the first embodiment.

[0040] Specifically, as Figure 9 compared with the crack detection unit of the first embodiment, the monitoring cavity 53 is not provided, and the air sensing assembly 6 is installed on the inner wall of the air guide layer 52 away from the gas detection rubber strip 51, and the air sensing assembly 6 is provided with only one pressure sensor 62 and one bulging diaphragm 63.

[0041] Figure 8 and Figure 9As shown, a gas detection strip 51 is provided at only one end of the front and rear ends of the cover plate unit 3, and a sealing groove 501 is chiseled at the other end of the front and rear ends of the cover plate unit 3. The sealing groove 501 corresponds to and matches the gas detection strip 51 that is laterally adjacent. A warning unit 7 is provided on each of the two cover plate units 3 near the front and rear edges of the frame 1. A wiring unit is provided on each of the multiple cover plate units 3. When the multiple wiring units are connected end to end, the circuits of the two warning units 7 are connected. The wiring unit includes multiple wires that are respectively connected to the cover plate unit 3. The two ends of the wires extend to the surface of the gas detection strip 51 and the inner wall of the sealing groove 501, respectively. The warning unit 7 includes a warning groove chiseled on the cover plate unit 3. A light strip 72 is installed at the bottom of the warning groove. The light strip 72 is connected to the wire on the cover plate unit 3. A transparent protective plate 71 is also fixedly connected to the opening of the warning groove. The warning groove and the gas guiding layer 52 are misaligned so that they do not overlap, thus avoiding the impact on the strength of the cover plate unit 3 due to overlap.

[0042] The radii of the sealing groove 501 and the gas testing strip 51 are consistent, and the cross-sectional angle of the sealing groove 501 is smaller than that of the gas testing strip 51. This effectively ensures that when the ends of the two cover plate units 3 are in horizontal contact, the gas testing strip 51 and the sealing groove 501 abut against each other. This effectively ensures that the wires on multiple cover plate units 3 can be stably connected in series without cracks, so that the light strip 72 is in the lit state. When a crack and gas leakage occur, the gas testing strip 51 gradually collapses. When the cover plate unit 3 is horizontal, the gas testing strip 51 and the inner wall of the sealing groove 501 are difficult to make stable contact, causing the light strip 72 to go out. When not hoisted, this maintenance cover plate is in a horizontal state. When workers or workshop trolleys pass by this area, they can judge whether the cover plate unit 3 is cracked and whether there is a safety hazard by observing whether the light strip 72 is lit. Compared with the first implementation method, it has the function of automatic on-site warning. In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A labor-saving safety inspection cover for lifting holes, characterized in that: The frame (1) is installed at the opening of the hanging hole. The left and right inner walls and the front and rear inner walls of the frame (1) are respectively equipped with horizontal cover strips (201) and vertical cover strips (202) via electric rotating shafts. Folding fences (8) are also installed at the front and rear ends of the frame (1). The folding fences (8) are located below the horizontal cover strips (201). A support frame (4) is fixedly connected to the lower end of the frame (1). The left and right ends of the support frame (4) do not coincide with the horizontal cover strips (201). Electric slide rails are installed above the left and right ends of the support frame (4). Folding cover plates are installed on the front and rear inner walls of the frame (1) via electric rotating shafts. The folding cover plates include multiple cover plate units (3) that are rotatably connected in pairs. The bottom of one of the cover plate units (3) is connected to the electric slide rail. Each of the multiple cover plate units (3) is provided with a crack detection unit. The crack detection unit includes a gas testing strip (51) installed at the end of the cover plate unit (3) and a sensing unit located inside the cover plate unit (3). The sensing unit includes multiple air guiding layers (52) and a monitoring cavity (53) located between the two ends of the air guiding layers (52). A gas sensing component (6) is fixedly connected inside the monitoring cavity (53). The gas testing strip (51) and the air guiding layers (52) are connected, and the gas testing strip (51) and the air guiding layers (52) are filled with compressed air. Two gas testing strips (51) are provided, and the monitoring chamber (53) is not located in the middle of the gas guiding layer (52), and the two adjacent monitoring chambers (53) are staggered. The gas testing strip (51) and the gas guiding layer (52) are located above the middle of the cover plate unit (3). A reinforcing block (54) is also placed inside the gas guiding layer (52). The reinforcing block (54) is a rigid multi-perforated structure, and the thickness of the reinforcing block (54) is consistent with the longitudinal span of the gas guiding layer (52). The gas sensing component (6) includes a partition (61) fixedly connected to the middle of the monitoring chamber (53), two pressure sensors (62) respectively installed at the left and right ends of the partition (61), and two bulging diaphragms (63) respectively fixedly connected to the two openings of the monitoring chamber (53). The bulging diaphragms (63) are located at the transverse midline between the partition (61) and the opening of the monitoring chamber (53).

2. The labor-saving type safety inspection cover for lifting holes according to claim 1, characterized in that: The partition (61) is a rigid sealing structure, and the partition (61) separates the air guide layer (52) on both sides of the monitoring cavity (53) into independent spaces. The bulging diaphragm (63) is an elastic transparent structure, and when the multiple cover plate units (3) are in a horizontal state, the bulging diaphragm (63) abuts against the corresponding pressure sensor (62).

3. The labor-saving type safety inspection cover for lifting holes according to claim 1, characterized in that: The cover plate unit (3) has a gas testing strip (51) at one end of its front and rear ends, and a sealing groove (501) is chiseled at the other end of its front and rear ends. The sealing groove (501) corresponds to and matches the gas testing strip (51) that is laterally adjacent. Both cover plate units (3) near the front and rear edges of the frame (1) are provided with a warning unit (7). Multiple cover plate units (3) are provided with wiring units. When multiple wiring units are connected end to end, the circuits of the two warning units (7) are connected.

4. The labor-saving type safety inspection cover for lifting holes according to claim 3, characterized in that: The radius of the sealing groove (501) and the gas testing strip (51) are consistent, and the cross-sectional angle of the sealing groove (501) is smaller than the cross-sectional angle of the gas testing strip (51).

5. A labor-saving safety inspection cover for lifting holes according to claim 3, characterized in that: The wiring unit includes multiple wires connected to the cover plate unit (3), with both ends of the wires extending to the surface of the gas testing strip (51) and the inner wall of the sealing groove (501).

6. The labor-saving type safety inspection cover for lifting holes according to claim 5, characterized in that: The warning unit (7) includes a warning groove carved on the cover plate unit (3). A light strip (72) is installed at the bottom of the warning groove. The light strip (72) is connected to a wire on the cover plate unit (3). A transparent protective plate (71) is also fixedly connected to the opening of the warning groove. The warning groove is misaligned with the air guide layer (52).

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