Full-automatic hoisting opening

Abstract

A full-automatic hoisting opening comprises a frame, a cover plate and two sets of folding type guardrails located on the two sides of the cover plate respectively. One end of the cover plate is rotatably connected to the frame; the foldable guardrails can be switched between a folded state and an unfolded state, each group of foldable guardrails comprises a base and a vertical rod, and the lower end of the vertical rod is pivoted with the base. A guardrail linkage mechanism is arranged between the cover plate and each group of folding guardrails, each guardrail linkage mechanism comprises a connecting plate and a plug pin, the connecting plates are connected with the vertical rods, kidney-shaped holes are formed in the connecting plates, and the extension direction of the kidney-shaped holes is parallel to the vertical rods; one end of the bolt is connected with the cover plate, and the other end of the bolt is inserted into the kidney-shaped hole. The guardrail can be conveniently and rapidly unfolded and folded, the object hanging holes can be opened and closed, the structure is simple, and manufacturing is easy.

Description

Technical Field

[0001] The invention relates to a hoisting opening for covering a hole for hoisting objects in a building. Background Art

[0002] The floors of buildings in power plants and other places are usually provided with lifting holes for lifting in or out of equipment, and equipment lifting ports are provided at the lifting holes. Conventional lifting ports are composed of a frame, a cover plate, a gap shield, a guardrail, and a cover plate opening and closing mechanism. When not in use, the lifting hole is covered with a cover plate and a gap shield, wherein the gap shield is provided to cover the gap between the cover plate and the lifting hole. When the lifting hole needs to be used, the operator flips over the gap shields one by one and opens the cover plate through the cover plate opening and closing mechanism, and sets up the guardrail, thereby forming a stable safety fence structure around the entire lifting hole. For manual opening and closing, a pull rod is provided on the cover plate.

[0003] When using conventional lifting ports, it is necessary to set up guardrails, open covers and cover plates respectively when opening the lifting holes, which increases the labor burden of operators and the time of opening and closing the lifting holes, affects work efficiency, and is prone to safety problems due to misoperation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hoisting port which can conveniently and quickly unfold and store guardrails and open and close holes for hoisting objects, and the structure is simple and easy to manufacture.

[0005] A fully automatic lifting port according to an embodiment of the present invention comprises a frame, a cover plate and two groups of foldable guardrails respectively located on both sides of the cover plate; one end of the cover plate is rotatably connected to the frame so as to switch between a closed position and an open position by rotation; the foldable guardrails can switch between a folded state and an unfolded state, and each group of foldable guardrails comprises a base and a vertical rod, and the lower end of the vertical rod is pivotally connected to the base; it is characterized in that a guardrail linkage mechanism is provided between the cover plate and each group of foldable guardrails, the guardrail linkage mechanism comprises a connecting plate and a latch, the connecting plate is connected to the vertical rod, the connecting plate is provided with a waist hole, and the extension direction of the waist hole is parallel to the vertical rod; one end of the latch is connected to the cover plate, and the other end of the latch is inserted into the waist hole.

[0006] Furthermore, each set of foldable guardrails includes an outer box, which includes a box body and a box cover, and one side of the box cover in the width direction is pivotally connected to the top of the box body; the base is fixedly arranged in the box body, and the vertical rod is stored in the outer box when the foldable guardrail is in a folded state; when the cover is opened, the pin drives the vertical rod to rotate synchronously, and the vertical rod pushes open the box cover.

[0007] Furthermore, the fully automatic lifting port includes a gap cover plate, one end of which is pivotally connected to the frame; the end surface of one end of the cover plate is provided with a first inclined surface inclined backward from bottom to top, and the end surface of the other end of the cover plate is provided with a second inclined surface matching the first inclined surface, and the inclination of the second inclined surface is the same as that of the first inclined surface; when the cover plate is in a closed position, the second inclined surface presses on the first inclined surface, and when the cover plate is opened, the gap cover plate is driven to open synchronously.

[0008] Furthermore, the fully automatic lifting port includes a cover opening and closing mechanism capable of switching between an electric cover opening and closing mode and a manual cover opening and closing mode.

[0009] The present invention has at least the following advantages and features:

[0010] 1. After adopting the above technical solution, when opening or closing the cover plate, the foldable guardrail can be driven to unfold or fold synchronously through the linkage mechanism, and the gap-shielding plate and the cover of the outer box can be driven to open or close together, thereby reducing the labor intensity of the staff and reducing the time spent on opening or closing the entire hanging hole, thereby improving work efficiency and operation safety;

[0011] 2. The guardrail linkage mechanism and the linkage mechanism for opening and closing the gap shielding plate in the embodiment of the present invention are very simple and easy to manufacture;

[0012] 3. When the cover plate is opened and closed by electric drive, the present invention can realize one-button opening and closing of the hanging hole through the operation button of the electric drive mechanism, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 and Figure 2 A schematic top view and a schematic bottom view of a lifting port according to an embodiment of the present invention are respectively shown.

[0014] Figure 3 and Figure 4 A side view schematic diagram of a lifting port according to an embodiment of the present invention is respectively shown, wherein the cover plate is in an open state and the foldable guardrail is in an unfolded state.

[0015] Figures 5 to 7 The schematic diagrams of the structures of the guardrail linkage mechanism according to an embodiment of the present invention are respectively shown.

[0016] Figure 8 A cross-sectional schematic diagram of a foldable guardrail in an unfolded state according to an embodiment of the present invention is shown.

[0017] Fig. 9 A schematic diagram of a foldable guardrail in an unfolded state according to an embodiment of the present invention is shown (taking only three vertical rods as an example).

[0018] Fig.10 and Fig.11A top view schematic diagram and a cross-sectional view schematic diagram of a foldable guardrail in a folded state according to an embodiment of the present invention are respectively shown.

[0019] Fig.12 A side view schematic diagram of a cover plate according to an embodiment of the present invention is shown, wherein the cover plate and the slit shielding plate are in the process of transitioning from a closed state to an open state.

[0020] Fig.13 A side view schematic diagram of a cover plate according to an embodiment of the invention is shown, wherein the cover plate and the gap shielding plate are in an open state.

[0021] Fig.14 A schematic structural diagram of a cover opening and closing mechanism according to an embodiment of the present invention is shown, wherein the cover opening and closing mechanism is in an electrically operated cover opening and closing mode, and an active part and a driven part are connected together.

[0022] Fig.15 A schematic structural diagram of a cover opening and closing mechanism according to an embodiment of the present invention is shown, wherein the cover opening and closing mechanism is in a manual cover opening and closing mode, and the active part is separated from the driven part.

[0023] Fig.16 A structural schematic diagram of a switching mechanism according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] The present invention is described in more detail below with reference to the accompanying drawings and a number of specific embodiments.

[0025] Please refer to Figures 1 to 11 The fully automatic lifting port according to an embodiment of the present invention comprises a frame 1, a cover plate 2, a gap shielding plate 3, two sets of folding guardrails 4 respectively located on both sides of the cover plate 2, and a cover plate opening and closing mechanism 5 capable of switching between an electric opening and closing cover plate mode and a manual opening and closing cover plate mode.

[0026] The frame 1 is arranged around the hanging hole 90 of the floor slab 9 .

[0027] One end of the cover plate 2 is rotatably connected to the frame 1 through multiple sets of cover plate rotating mechanisms 6 to switch between the closed position and the open position by rotation. In this embodiment, each set of cover plate rotating mechanisms 6 includes a gear mechanism, an upper balance arm 61 and a weight arm 62. The gear mechanism includes a support frame 600, a first gear shaft 601, a second gear shaft 602, a first gear 603 and a second gear 604. The support frame 600 is fixed on the frame 1; both ends of the first gear shaft 601 and both ends of the second gear shaft 602 are respectively arranged on the support frame 600, and the first gear shaft 601 and the second gear shaft 602 are parallel to each other. The first gear 603 is arranged on the first gear shaft 601 and is fixedly connected to one end of the upper balance arm 61, and the other end of the upper balance arm 61 is fixedly connected to one end of the cover plate 2, and the first gear 603 and the upper balance arm 61 move synchronously with the cover plate 2. The second gear 604 meshes with the first gear 603 . The second gear 604 is disposed on the second gear shaft 602 and is fixedly connected to the weight arm 62 . The second gear 604 can drive the weight arm 62 to rotate together.

[0028] The foldable guardrail 4 can be switched between a folded state and an unfolded state. Each set of foldable guardrails 4 comprises a base 40, three rows of vertical rods 41, a row of horizontal rods 42, a plurality of guide wheels 43, guardrail ropes 44 and a guardrail rope tightening and adjusting mechanism 45.

[0029] The lower end of each column of vertical rods 41 is pivotally connected to the base 40. The two ends of the crossbar 42 are respectively pivotally connected to the upper ends of the two adjacent columns of vertical rods 41. A plurality of guide wheels 43 are respectively arranged on the first and last columns of vertical rods 41; one end of the guardrail rope 44 is fixed to any one of the vertical rods 41 in the first and last columns of vertical rods, the guardrail rope 44 passes through the middle vertical rod, and the other end of the guardrail rope 44 is connected to the guardrail rope tightening adjustment mechanism 45. The guardrail rope 44 alternately passes around the guide wheel 43 arranged on the left vertical rod and the guide wheel 43 arranged on the right vertical rod in the height direction, and forms a plurality of rows of horizontal rope segments 441 extending laterally below the crossbar 42.

[0030] When each set of foldable guardrails 4 is in the unfolded state, three rows of vertical rods 41, one row of horizontal rods 42 and multiple rows of horizontal rope segments 441 are arranged horizontally and vertically; when each set of foldable guardrails 4 is in the folded state, three rows of vertical rods 41, one row of horizontal rods 42 and guardrail ropes 44 are stored in an outer box 49. In some specific application implementations, the guardrail ropes 44 can be steel wire ropes. The guardrail rope tightening and adjusting mechanism 45 uses a locker.

[0031] In other embodiments, only the first and last rows of vertical rods 41 may be provided. For the specific structure and detailed working principle of the foldable guardrail 4, please refer to the patent application with application number "202220343473.1" and invention name "Foldable guardrail module device" filed by the applicant on February 18, 2022.

[0032] A guardrail linkage mechanism 7 is provided between the cover plate 2 and each group of foldable guardrails 4. The guardrail linkage mechanism 7 is used to drive the foldable guardrails 4 to unfold when the cover plate 2 is opened and to drive the foldable guardrails 4 to fold when the cover plate 2 is closed.

[0033] The guardrail linkage mechanism 7 includes a connecting plate 71 and a latch 72. The connecting plate 71 is connected to any one of the vertical rods 41 of the foldable guardrail 4. The connecting plate 71 is provided with a waist hole 710, and the extension direction of the waist hole 710 is parallel to the vertical rod 41. One end of the latch 72 is welded to the side of the cover plate 2, and the other end of the latch 72 is inserted into the waist hole 710. When the cover plate 2 is opened, the foldable guardrail 4 can be opened together with the cover plate 2 under the drive of the latch 72. Preferably, the connecting plate 71 is detachably connected to the vertical rod 41. Optionally, the connecting plate 71 is connected to the vertical rod 41 by bolts, so as to facilitate the adjustment of the upper and lower positions of the connecting plate 71.

[0034] In this embodiment, there are two cover plates 2, one end of each of which is connected to two opposite sides of the frame 1, forming a split cover plate. Each cover plate 2 is a foldable cover plate, which is composed of a plurality of foldable sub-cover plates 2a. A group of foldable guardrails 4 is provided on both sides of each cover plate 2, and the aforementioned guardrail linkage mechanism 7 is provided between the cover plate 2 and each group of foldable guardrails 4. The two groups of foldable guardrails 4 located on the same side of the two cover plates 2 are arranged in the same outer box 49, and the two groups of foldable guardrails 4 in the same outer box are staggered in front and back arrangement.

[0035] In another embodiment, the cover plate 2 is a non-foldable cover plate. In yet another embodiment, the number of the cover plate 2 is one.

[0036] The outer box 49 includes a box body 49a and a box cover 49b. One side of the box cover 49b in the width direction is pivotally connected to one side of the top of the box body 49a by means of a first hinge 49c, and the other side of the box cover 49b in the width direction is supported on and supported on the other side of the top of the box body 49a. The base 40 is fixedly arranged in the box body 49a. When the foldable guardrail 4 is in a folded state, it is placed in the box body 49a, and the upper box cover 49b serves to cover it. In this embodiment, the outer box 49 constitutes a part of the frame 1, and the box body 49a includes an angle steel 491 and a vertical plate 492 connected to one end of the crossbeam of the angle steel 491, and an opening 493 for the latch 72 to pass through is opened at the top of the vertical beam of the angle steel 491.

[0037] When the cover 2 is opened, the latch 72 drives the vertical rod 41 to rotate synchronously, and the top of the vertical rod 41 automatically lifts the box cover 49b above. Driven by the first hinge 49c, the box cover 49b opens by friction contact with the vertical rod 41 of the foldable guardrail 4, and the box cover 49b always remains leaning on the vertical rod 41. When the cover 2 is closed, the box cover 49b slowly falls down and closes following the vertical rod 41, and the vertical rod 41 is stored in the outer box 49 when the foldable guardrail 4 is in a folded state.

[0038] Please refer to Fig.12 and Fig.13 . When the cover plate 2 is opened, affected by the rotation of the cover plate, a certain space needs to be reserved between one end of the cover plate 2 and the frame 1 to allow the cover plate to rotate to open and close. A slit cover plate 3 is provided above this gap to block the gap between the cover plate and the frame. One end of the slit cover plate 3 is pivotally connected to the frame 1 through a second hinge 3c. The end surface of one end of the cover plate 2 is provided with a first inclined surface 21 that tilts backward from bottom to top, and the end surface of the other end of the slit cover plate 3 is provided with a second inclined surface 32 that matches the first inclined surface 21, and the second inclined surface 32 has the same inclination as the first inclined surface 21. When the cover plate 2 is in the closed position, the second inclined surface 32 presses on the first inclined surface 21. When the cover plate 2 is opened or closed, the slit cover plate 3 generates friction on the first inclined surface 21 by relying on the inclination of the second inclined surface 32. Driven by the second hinge 3c of the slit cover plate 3, the slit cover plate 3 opens or closes synchronously with the cover plate 2. The above-mentioned inclined surface design can prevent the slit cover plate from getting stuck when sliding on the cover plate.

[0039] In another embodiment, a plurality of rollers are provided at the other end of the slit shielding plate 3 along the width direction. When the cover is in the closed position, the plurality of rollers are pressed on the first inclined surface 21. This design can also prevent the slit shielding plate 3 from getting stuck when sliding on the cover 2. When the cover 2 is opened, the slit shielding plate 3 is driven to open synchronously.

[0040] Please refer to Figures 14 to 16 Each cover plate 2 is connected to a cover plate opening and closing mechanism 5. The cover plate opening and closing mechanism 5 includes an electric drive mechanism 51, a rotating shaft 52, a clutch 53 and a switching mechanism 54.

[0041] The electric drive mechanism 51 is fixed to the frame 1. In this embodiment, the electric drive mechanism 51 includes a motor 511, a reduction box 512 and a coupling 513. The reduction box 512 is mounted on the frame 1 by means of a reduction box mounting plate 514, the motor 511 is connected to the input shaft of the reduction box 512, and the output shaft of the reduction box 512 is connected to the input shaft of the coupling 513.

[0042] One end of the rotating shaft 52 is connected to the output shaft of the coupling 513 (i.e., the output end of the electric drive mechanism 51) to receive the torque output by the electric drive mechanism 51. The central axis of the rotating shaft 52 is coaxially arranged with the rotation axis of the cover plate 2. In this embodiment, the rotation axis of the cover plate 2 is the central axis of the first gear shaft 601. When the first gear shaft 601 rotates, it drives the first gear 603, the upper balance arm 61 and the cover plate 2 to rotate together.

[0043] The clutch 53 includes an active part 531 and a driven part 532. The active part 531 is sleeved outside the rotating shaft 52. The active part 531 is connected to the rotating shaft 52 in a manner that it rotates synchronously with the rotating shaft 51 but cannot move axially relative to the rotating shaft 52. The driven part 532 is movably sleeved outside the rotating shaft 52 and is connected to the cover plate 2 to drive the cover plate 2 to rotate.

[0044] In this embodiment, the active part 531 is key-connected with the rotating shaft 52. A pair of connecting ribs 22 are provided on the bottom surface of one end of the cover plate 2, one end of the pair of connecting ribs 22 extends out of one end of the cover plate 2, and one end of the pair of connecting ribs 22 is respectively provided with a first through hole and a second through hole, and the second through hole is a spline hole; the rotating shaft 52 passes through the first through hole and the second through hole in sequence, the active part 531 is located between the pair of connecting ribs 22, and a spline 533 matching the spline hole is provided on the side of the driven part 532, and the spline is key-connected with the spline hole.

[0045] In this embodiment, the clutch 53 is a dog clutch.

[0046] The switching mechanism 54 is connected to the driven part 532 and is used to control the driven part 532 to be selectively connected to the active part 531 ; when the active part 531 is connected to the driven part 532 , the active part 531 can transmit the torque output by the rotating shaft 52 to the cover plate 2 through the driven part 532 .

[0047] The switching mechanism 54 includes an operating handle 541, a connecting rod 542 and a shift fork 543. The operating handle 541 is rotatably connected to the frame 1, wherein a pin 544 is connected to the side of the frame 1, and the operating handle 541 is sleeved outside the pin 544. One end of the connecting rod 542 is connected to the lower end of the operating handle 541, and the other end of the connecting rod 542 is connected to the shift fork 543, and the shift fork 543 is connected to the driven part 532. When the operating handle 541 is pulled in a first direction, the active part 531 and the driven part 532 can be engaged with each other, and the torque output by the electric drive mechanism 51 is transmitted to the cover plate 2 through the rotating shaft 52 and the driven part 532, which is the electric state. In the electric state, the electric drive mechanism 51 replaces the manual pulling force, so that the cover plate is slowly opened and closed under the action of the heavy hammer. When the operating handle 541 is pulled in a second direction opposite to the first direction, the active part 531 and the driven part 532 can be separated, which is the manual operation state.

[0048] Furthermore, the cover plate opening and closing mechanism 5 further includes a spring 55. The spring 55 is sleeved outside the 52, one end of the spring 55 abuts against a spring stopper (the spring stopper may be formed by a step or an annular flange) disposed on the rotating shaft 52, and the other end of the spring 55 abuts against a driven part 532 of the clutch to apply an elastic force to the driven part 532 to press against the active part 531, so that the active part and the driven part of the tooth clutch are more closely engaged with each other.

[0049] The fully automatic lifting port of the embodiment of the present invention realizes the overall linkage (three-linkage) function. When the cover plate is opened, the foldable guardrail is unfolded and the gap cover behind the cover plate is opened. The opening of the foldable guardrail drives the box cover above the guardrail to open. In the electric state, the lifting hole can be opened and closed with one button by operating the button. In the manual operation state, the cover plate, foldable guardrail and gap cover can be opened and closed at the same time by pulling the pull rod on the cover plate.

[0050] The above description is a further explanation of the present invention in combination with specific implementation methods and drawings. However, the present invention can obviously be implemented in a variety of other methods different from the description, and those skilled in the art can generalize and deduce according to actual usage without violating the content of the present invention. Therefore, the content of the above specific embodiments should not limit the protection scope determined by the present invention.

Claims

1. A fully automatic lifting port, comprising a frame, a cover plate, and two groups of foldable guardrails respectively located on both sides of the cover plate; one end of the cover plate is rotatably connected to the frame so as to switch between a closed position and an open position by rotation; the foldable guardrails can switch between a folded state and an unfolded state, and each group of foldable guardrails comprises a base and a vertical rod, and the lower end of the vertical rod is pivotally connected to the base; characterized in that, A guardrail linkage mechanism is provided between the cover plate and each group of foldable guardrails, and the guardrail linkage mechanism includes a connecting plate and a latch, wherein the connecting plate is connected to the vertical rod, and the connecting plate is provided with a waist hole, and the extension direction of the waist hole is parallel to the vertical rod; one end of the latch is connected to the cover plate, and the other end of the latch is inserted into the waist hole.

2. The fully automatic lifting port according to claim 1, characterized in that: Each set of foldable guardrails includes an outer box, the outer box includes a box body and a box cover, and one side of the box cover in the width direction is pivotally connected to the top of the box body; The base is fixedly arranged in the box body, and the vertical rod is stored in the outer box when the foldable guardrail is in a folded state; When the cover is opened, the latch drives the vertical rod to rotate synchronously, and the vertical rod pushes open the box cover.

3. The fully automatic lifting port according to claim 1, characterized in that: The fully automatic lifting port includes a gap-shielding plate, one end of which is pivotally connected to the frame; The end surface of one end of the cover plate is provided with a first inclined surface which is inclined backward from bottom to top, and the end surface of the other end of the gap shielding plate is provided with a second inclined surface which matches the first inclined surface, and the inclination of the second inclined surface is the same as that of the first inclined surface; When the cover plate is in the closed position, the second inclined surface presses on the first inclined surface, and when the cover plate is opened, the slit shielding plate is driven to open synchronously.

4. The fully automatic lifting port according to claim 1, characterized in that: The fully automatic lifting port includes a gap-shielding plate, one end of which is pivotally connected to the frame; The end surface of one end of the cover plate is provided with a first inclined surface tilted backward from bottom to top, and the other end of the slit shielding plate is provided with a plurality of rollers along the width direction; When the cover plate is in the closed position, the plurality of rollers are pressed on the first inclined surface, and when the cover plate is opened, the slit shielding plate is driven to open synchronously.

5. The fully automatic lifting port according to claim 1, characterized in that: The fully automatic lifting port comprises a cover opening and closing mechanism capable of switching between an electric cover opening and closing mode and a manual cover opening and closing mode.

6. The fully automatic lifting port according to claim 5, characterized in that: The cover opening and closing mechanism includes an electric drive mechanism, a rotating shaft, a clutch and a switching mechanism; The electric drive mechanism is fixed to the frame; One end of the rotating shaft is connected to the output end of the electric drive mechanism for receiving the torque output by the electric drive mechanism; the central axis of the rotating shaft is coaxially arranged with the rotation axis of the cover plate; The clutch comprises an active part and a driven part, wherein the active part is sleeved outside the rotating shaft, and is connected to the rotating shaft in a manner of rotating synchronously with the rotating shaft but not being able to move axially relative to the rotating shaft, and the driven part is movably sleeved outside the rotating shaft and connected to the cover plate; The switching mechanism is connected to the driven part and is used to control the driven part to be selectively connected to the active part; when the active part is connected to the driven part, the active part can transmit the torque output by the rotating shaft to the cover plate through the driven part.

7. The fully automatic lifting port according to claim 6, characterized in that: The active part is key-connected with the rotating shaft.

8. The fully automatic lifting port according to claim 6, characterized in that: A pair of connecting ribs are provided on the bottom surface of one end of the cover plate, one end of the pair of connecting ribs extends out of one end of the cover plate, and one end of the pair of connecting ribs is respectively provided with a first through hole and a second through hole, wherein the second through hole is a spline hole; The rotating shaft passes through the first through hole and the second through hole in sequence, the active part is located between the pair of connecting ribs, and the side surface of the driven part is provided with a spline that matches the spline hole, and the spline is key-connected to the spline hole.

9. The fully automatic lifting port according to claim 6, characterized in that: The cover opening and closing mechanism includes a spring; the spring is sleeved outside the rotating shaft, one end of the spring abuts against a spring stopper provided on the rotating shaft, and the other end of the spring abuts against the driven part of the clutch to apply an elastic force to the driven part to press against the active part.

10. The fully automatic lifting port according to claim 1, characterized in that: There are two cover plates, one end of each of which is connected to two opposite sides of the frame respectively; Each cover plate is a folding cover plate or a non-folding cover plate. A group of folding guardrails are respectively arranged on both sides of each cover plate. The guardrail linkage mechanism is arranged between the cover plate and each group of folding guardrails.

Images