Adjustable protection device for elevator shaft opening

Abstract

The utility model relates to the technical field of building safety, in particular to an adjustable protective device for an elevator shaft opening, which comprises a toolbar, a hook bolt is mounted on one side of the toolbar and matched with a through hole in the top end of a convex bolt in an inserted manner, a nut is rotatably connected to the inner wall of the bottom end of the through hole, and the nut is in threaded connection with a threaded section of the hook bolt. The convex bolt is mounted in a square steel groove, the square steel groove is mounted on the wall on one side of the hole, two second hook bolts are mounted on the other side of the toolbar and connected with a fixing mechanism, and the fixing mechanism is mounted on the wall on the other side of the hole and is in threaded connection with threaded sections of the hook bolts by arranging nuts. And the hook bolts II are connected with the fixing mechanisms, so that the height between the toolbar and the ground can be conveniently adjusted, the repeated disassembly and assembly work of the toolbar is avoided, and the labor cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of building safety technology, and in particular to an adjustable protective device for elevator shaft openings. Background Technology

[0002] Currently, the elevator shaft protection at the construction site during the structural construction phase uses tool-type guardrails. These guardrails are fixed by drilling holes at four fixed points on both sides of the opening and inserting wall expansion bolts to increase the safety of workers during construction.

[0003] However, existing technologies still have shortcomings. For example, a protective net for an elevator shaft with patent number CN202121904061.2 includes a protective net body. The protective net body has an installation part on the side near the elevator shaft. The installation part has a telescopic part that slides on it to abut against the horizontal side walls of the elevator shaft. The length of the telescopic part is adjustable. When the ground needs to be constructed on the construction site, the device needs to be disassembled, moved upwards, and reinstalled, which increases labor costs. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable protective device for elevator shaft openings to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable protective device for elevator shaft openings, comprising: a toolbar, on one side of which is equipped with a hook bolt, the hook bolt being inserted into a through hole at the top of a convex bolt, a nut being rotatably connected to the inner wall at the bottom of the through hole, the nut being threadedly connected to the threaded section of the hook bolt, the convex bolt being installed in a square steel groove, the square steel groove being installed on the wall on one side of the opening, and two hook bolts being installed on the other side of the toolbar, the hook bolts being connected to a fixing mechanism, the fixing mechanism being installed on the wall on the other side of the opening.

[0006] Preferably, the fixing mechanism includes: an angle steel and a second nut, the threaded section of the second hook bolt is threadedly connected to the second nut, the second nut is rotatably installed in the through hole at the top of the angle steel, and the angle steel is installed on the wall on the other side of the opening.

[0007] Preferably, the toolbar includes a frame, one side of which is fitted with a hook bolt, and the other side of which is fitted with two hook bolts.

[0008] Preferably, the frame has multiple railings installed between its two inner walls, and the railings are arranged in parallel.

[0009] Preferably, a worm gear is rotatably connected to the groove of the square steel, the worm gear meshes with a worm wheel, the worm wheel is fitted onto a nut, and the worm wheel is positioned below the convex bolt.

[0010] Preferably, the end of the worm gear located outside the groove of the square steel is equipped with a screw nut.

[0011] Preferably, a gear is fitted on the nut two, and the gear meshes with the gear two. The gear two is rotatably mounted on the through hole three at the top of the angle steel, and the two gear two are respectively fitted on the upper and lower parts of the rotating shaft.

[0012] Preferably, the rotating shaft includes: a second rotating shaft, a third rotating shaft, a mounting ring, and a spring. A second gear is mounted on the second rotating shaft. The bottom end of the second rotating shaft has a screw hole. The third rotating shaft is slidably connected in a through hole four on the top surface of the second rotating shaft. The top of the third rotating shaft, located above the second rotating shaft, is fitted with a second screw nut. The side wall of the third rotating shaft is provided with a mounting ring, and the top end of the mounting ring is connected to the top wall of the screw hole through a spring.

[0013] Preferably, another gear is mounted on the shaft four, and the screw hole is threadedly connected to the threaded section at the top of the shaft four.

[0014] Preferably, the top surface of the rotating shaft has a slot, the slot is slidably connected to the insert block, and the insert block is installed at the bottom end of the rotating shaft.

[0015] The beneficial effects of this utility model are as follows:

[0016] By setting the threaded connection between the nut and the hook bolt, and connecting the hook bolt to the fixing mechanism, the height between the toolbar and the ground can be easily adjusted, avoiding repeated disassembly and assembly of the toolbar and saving labor costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the meshing connection between the gears and gears of this utility model;

[0019] Figure 3 This is a schematic diagram of the worm gear mounting position according to this utility model;

[0020] Figure 4 This is a cross-sectional view of the rotating shaft of this utility model.

[0021] In the diagram: Toolbar 1, Square Steel Groove 2, Convex Door Bolt 3, Hook Bolt 4, Nut 5, Angle Steel 6, and Nut II 7, Frame 8, Railing 9, Worm Gear 10, Worm Wheel 11, Gear 12, Gear II 13, Shaft 14, Shaft II 15, Shaft III 16, Mounting Ring 17, and Spring 18, Shaft IV 19, Insert Block 20. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: Reference Figures 1-4 An adjustable protective device for elevator shaft openings includes: a toolbar 1, on one side of which is a hook bolt 4, which is inserted into a through hole at the top of a convex bolt 3, and a nut 5 is rotatably connected to the inner wall at the bottom of the through hole, which is threadedly connected to the threaded section of the hook bolt 4; the convex bolt 3 is installed in a square steel groove 2, which is installed on the wall on one side of the opening; and two hook bolts 2 are installed on the other side of the toolbar 1, which are connected to a fixing mechanism, which is installed on the wall on the other side of the opening.

[0025] The opening end of the side wall of the square steel groove 2 faces the toolbar 1. The hook bolt 4 has the same two-dimensional structure as the hook bolt. The hook bolt 4 has an L-shaped structure. The threaded section of the hook bolt 4 is set away from the top of the toolbar 1.

[0026] The principles and beneficial effects of the above scheme are as follows:

[0027] Install square steel grooves 2 and fixing mechanisms on the walls on both sides of the opening, connect hook bolts 4 and nuts 5 on toolbar 1, and connect hook bolts 2 and fixing mechanisms.

[0028] Before construction begins on the ground, turn nut 5 clockwise, and hook bolt 4 moves upward relative to nut 5. Adjust the fixing mechanism counterclockwise, and hook bolt 2 moves upward relative to the fixing mechanism. Hook bolt 4 and hook bolt 2 work together to lift toolbar 1. After lifting toolbar 1, construction can be carried out on the ground. By setting the threaded connection between nut 5 and hook bolt 4, and hook bolt 2 and fixing mechanism, it is easy to adjust the height between toolbar 1 and the ground, avoiding repeated disassembly and assembly of toolbar 1 and saving labor costs.

[0029] Example 2: Reference Figures 1-4 The fixing mechanism includes: angle steel 6 and nut 2 7. The threaded section of hook bolt 2 is threadedly connected to nut 2 7. Nut 2 7 is rotatably installed in the through hole 2 at the top of angle steel 6. Angle steel 6 is installed on the wall on the other side of the opening.

[0030] The principles and beneficial effects of the above scheme are as follows:

[0031] When raising the height of toolbar 1, rotate nut 2 7 clockwise simultaneously. Hook bolt 2 moves upward relative to nut 2 7. Hook bolt 2 and hook bolt 4 move synchronously to prevent hook bolt 2 from jamming with nut 2 7 or hook bolt 4 from jamming with nut 5.

[0032] Example 3: Reference Figures 1-4 The toolbar 1 includes a frame 8, one side of which is equipped with a hook bolt 4, and the other side of which is equipped with two hook bolts 2.

[0033] Multiple railings 9 are installed between the two inner walls of the frame 8, and the multiple railings 9 are arranged in parallel.

[0034] The principles and beneficial effects of the above scheme are as follows:

[0035] Multiple railings 9 are installed between the two inner walls of the frame 8, and the multiple railings 9 are arranged in parallel. A hook bolt 4 is installed on one side of the frame 8, which can be adjusted by nut 5. Two hook bolts II are installed on the other side of the frame 8, which can be adjusted by nut II 7. This also helps to increase the stability of the toolbar 1 after installation. Installing multiple railings 9 between the two inner walls of the frame 8 increases the overall stability of the toolbar 1 and reduces the weight of the toolbar 1.

[0036] Example 4: Reference Figures 1-4 A worm gear 10 is rotatably connected to the square steel groove 2. The worm gear 10 is meshed with a worm wheel 11. The worm wheel 11 is fitted onto the nut 5 and is located below the convex bolt 3.

[0037] The end of the worm gear 10 located outside the square steel groove 2 is equipped with a screw nut.

[0038] The principles and beneficial effects of the above scheme are as follows:

[0039] When the hook bolt 4 needs to be moved upward, the screw nut is turned clockwise. The screw nut drives the worm 10 to rotate clockwise, which in turn drives the worm wheel 11, which is meshed with it, to rotate clockwise. The worm wheel 11 then drives the nut 5 to rotate clockwise. The screw nut is connected to the worm 10, the worm 10 is meshed with the worm wheel 11, and the worm wheel 11 is connected to the nut 5. This allows the screw nut to drive the worm 10 to rotate outside the square steel groove 2, thereby causing the nut 5 to rotate.

[0040] Example 5: Reference Figures 1-4 The nut 7 is fitted with a gear 12, which meshes with a gear 13. The gear 13 is rotatably mounted on the through hole 3 at the top of the angle steel 6. The two gears 13 are respectively fitted on the upper and lower parts of the rotating shaft 14.

[0041] The principles and beneficial effects of the above scheme are as follows:

[0042] When the hook bolt needs to be moved upward, the rotating shaft 14 is rotated counterclockwise. The rotating shaft 14 drives the two gears 13 to rotate counterclockwise in sync. The two gears 13 each drive a gear 12 that meshes with them to rotate clockwise. Setting the rotating shaft 14 can ensure that the two gears 13 rotate synchronously, which improves the movement efficiency between the parts.

[0043] Example 6: Reference Figures 1-4 The rotating shaft 14 includes: a second rotating shaft 15, a third rotating shaft 16, a mounting ring 17, and a spring 18. A second gear 13 is fitted on the second rotating shaft 15. The bottom end of the second rotating shaft 15 has a screw hole. The third rotating shaft 16 is slidably connected in the through hole 4 on the top surface of the second rotating shaft 15. The top of the third rotating shaft 16, which is located above the second rotating shaft 15, is equipped with a second screw nut. The mounting ring 17 is provided on the side wall of the third rotating shaft 16. The top end of the mounting ring 17 is connected to the top wall of the screw hole through the spring 18.

[0044] Another gear 2 13 is fitted onto shaft 4 19, and the screw hole is threadedly connected to the threaded section at the top of shaft 4 19.

[0045] The top surface of the fourth rotating shaft 19 has a slot, which is slidably connected to the plug 20. The plug 20 is installed at the bottom of the third rotating shaft 16.

[0046] The specific shape of the insert 20 is a polygon.

[0047] The principles and beneficial effects of the above scheme are as follows:

[0048] When the size of the opening is increased, a larger toolbar 1 needs to be selected. In order to ensure the stability of the toolbar 1 after installation, the spacing between the two hook bolts 2 installed on the larger toolbar 1 is increased synchronously. Therefore, before fixing the angle steel 6, pull the screw nut 2 upward, the insert block 20 at the bottom of the shaft 3 16 disengages from the slot, the mounting ring 17 moves upward, and the spring 18 is compressed under the cooperation of the mounting ring 17 and the top wall of the screw hole. Rotate the screw nut 2 clockwise, and the shaft 2 15 rotates synchronously clockwise under the drive of the mounting ring 17 and the spring 18. The operator can hold the gear 2 13 set below the shaft 2 15, and the threaded section at the top of the shaft 4 19 moves away from the screw hole, thereby making the overall length of the shaft 14 longer. After the adjustment of the length of the shaft 14 is finished, loosen the screw nut 2 insert block 20 and re-insert it into the slot.

[0049] When the size of the opening is reduced, a smaller toolbar 1 needs to be selected. In order to ensure the stability of the toolbar 1 after installation, the distance between the two hook bolts 2 installed on the smaller toolbar 1 is reduced synchronously. Therefore, before fixing the angle steel 6, pull the screw nut 2 upward, the insert block 20 at the bottom of the shaft 3 16 disengages from the slot, the mounting ring 17 moves upward, and the spring 18 is compressed under the cooperation of the mounting ring 17 and the top wall of the screw hole. Rotate the screw nut 2 counterclockwise, and the shaft 2 15 rotates synchronously counterclockwise under the drive of the mounting ring 17 and the spring 18. The operator can hold the gear 2 13 set below the shaft 2 15. The threaded section at the top of the shaft 4 19 moves toward the inside of the screw hole, thereby shortening the overall length of the shaft 14. After the adjustment of the length of the shaft 14 is finished, loosen the screw nut 2 insert block 20 and re-insert it into the slot.

[0050] The insert 20 is designed to engage with the slot. When the length of the shaft 14 does not need to be adjusted, rotating the second screw nut can drive the fourth shaft 19 to rotate synchronously. When the length of the shaft 14 needs to be adjusted, rotating the second screw nut can drive the second shaft 15 to rotate synchronously. The operator can then hold the second gear 13 located below the second shaft 15 to facilitate the adjustment of the length of the shaft 14.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustable protective device for elevator shaft openings, characterized in that, include: Toolbar (1), one side of the toolbar (1) is equipped with a hook bolt (4), the hook bolt (4) is inserted into the through hole at the top of the convex bolt (3), the inner wall at the bottom of the through hole is rotatably connected with a nut (5), the nut (5) is threadedly connected to the threaded section of the hook bolt (4), the convex bolt (3) is installed in the square steel groove (2), the square steel groove (2) is installed on the wall on one side of the opening, the other side of the toolbar (1) is equipped with two hook bolts, the hook bolts are connected to the fixing mechanism, the fixing mechanism is installed on the wall on the other side of the opening.

2. The adjustable protective device for elevator shaft openings according to claim 1, characterized in that, The fixing mechanism includes: angle steel (6) and nut two (7). The threaded section of the hook bolt two is threadedly connected to nut two (7). Nut two (7) is rotatably installed in the through hole two at the top of angle steel (6). Angle steel (6) is installed on the wall on the other side of the opening.

3. The adjustable protective device for elevator shaft openings according to claim 2, characterized in that, The toolbar (1) includes: a frame (8), one side of the frame (8) is equipped with a hook bolt (4), and the other side of the frame (8) is equipped with two hook bolts.

4. The adjustable protective device for elevator shaft openings according to claim 3, characterized in that, The frame (8) is equipped with multiple railings (9) between its two inner walls, and the multiple railings (9) are arranged in parallel.

5. The adjustable protective device for elevator shaft openings according to claim 1, characterized in that, A worm (10) is rotatably connected to the square steel groove (2). The worm (10) is meshed with a worm wheel (11). The worm wheel (11) is fitted on the nut (5) and is located below the convex bolt (3).

6. The adjustable protective device for elevator shaft openings according to claim 5, characterized in that, The end of the worm gear (10) located outside the square steel groove (2) is equipped with a screw nut.

7. An adjustable protective device for elevator shaft openings according to claim 2, characterized in that, A gear (12) is fitted on the nut (7). The gear (12) meshes with the gear (13). The gear (13) is rotatably mounted on the through hole three at the top of the angle steel (6). The two gears (13) are respectively fitted on the upper and lower parts of the rotating shaft (14).

8. An adjustable protective device for elevator shaft openings according to claim 7, characterized in that, The rotating shaft (14) includes: rotating shaft two (15), rotating shaft three (16), mounting ring (17) and spring (18). A gear two (13) is fitted on rotating shaft two (15). A screw hole is opened at the bottom of rotating shaft two (15). Rotating shaft three (16) is slidably connected in the through hole four on the top surface of rotating shaft two (15). Rotating shaft three (16) is set at the top of rotating shaft two (15) with a screw nut two. A mounting ring (17) is provided on the side wall of rotating shaft three (16). The top of mounting ring (17) is connected to the top wall of screw hole through spring (18).

9. An adjustable protective device for elevator shaft openings according to claim 8, characterized in that, Another gear two (13) is fitted onto shaft four (19), and the screw hole is threaded to the threaded section at the top of shaft four (19).

10. An adjustable protective device for elevator shaft openings according to claim 9, characterized in that, The top surface of the fourth rotating shaft (19) has a slot, which is slidably connected to the plug (20), and the plug (20) is installed at the bottom of the third rotating shaft (16).

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