CN111762735A - Hoisting mechanism and cover plate hoisting device - Google Patents
Hoisting mechanism and cover plate hoisting device Download PDFInfo
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- CN111762735A CN111762735A CN202010628360.1A CN202010628360A CN111762735A CN 111762735 A CN111762735 A CN 111762735A CN 202010628360 A CN202010628360 A CN 202010628360A CN 111762735 A CN111762735 A CN 111762735A
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- hoisting
- rod
- sleeve
- cantilever
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
- B66F19/005—Lifting devices for manhole covers
Abstract
The invention belongs to the technical field of hoisting devices, and particularly discloses a hoisting mechanism and a cover plate hoisting device. The hoisting mechanism comprises a sleeve and a hoisting piece, wherein the sleeve is sequentially provided with a first sliding slot hole and a second sliding slot hole from top to bottom in the vertical direction. The hoisting piece is located in the inner cavity of the sleeve and is provided with a bearing rod and a connecting rod assembly, and the bearing rod penetrates through the first sliding groove hole and can slide up and down in the first sliding groove hole. The connecting rod component comprises a cantilever rod and a pull rod, the cantilever rod is hinged to the bottom end of the hoisting part, and one end of the pull rod penetrates out of the second sliding groove hole. When the connecting rod assembly extends out of the sleeve, the pull rod can slide downwards in the second sliding groove hole, so that the cantilever rod rotates relative to the hoisting piece and is unfolded. The hoisting mechanism is simple in structure and convenient to operate. While at the same time no precise positioning is required. The problem that the traditional hook is not matched with the size of the hoisting hole to cause the replacement of the hook is avoided, and the hoisting mechanism has certain universality.
Description
Technical Field
The invention relates to the technical field of hoisting devices, in particular to a hoisting mechanism and a cover plate hoisting device.
Background
The cable trench is an underground passage which is formed around a transformer substation or large-scale electric equipment and used for intensively burying cables, and a cover plate poured by cement is generally laid above the cable trench.
The existing cover plate hoisting mechanism generally uses a lifting hook for hoisting. The operator needs to stretch the lifting hook into the lifting hole of the cover plate, lift the cover plate and finally move away from the cable trench. Limited by the size and special structure of the lifting hook, the lifting hook needs to be accurately positioned with the hoisting hole of the cover plate so as to accurately insert the lifting hook into the hoisting hole of the cover plate. Because the size of the hoisting hole of the cover plate is generally small, the aligning process is time-consuming and labor-consuming, and the operation is complex. Meanwhile, the sizes and the shapes of the hoisting holes of different cover plates are different, the corresponding hoisting hooks are required to be replaced for hoisting, the hoisting efficiency is reduced, and the construction cost is increased.
Therefore, a hoisting mechanism and a cover plate hoisting device are needed to solve the problems.
Disclosure of Invention
The invention aims to provide a hoisting mechanism, which does not need to accurately position and replace a lifting hook, is simple and convenient to operate and has certain universality.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a hoisting mechanism comprising:
the sleeve is sequentially provided with a first sliding slot hole and a second sliding slot hole from top to bottom in the vertical direction;
the hoisting piece is positioned in the inner cavity of the sleeve and is provided with a bearing rod and a connecting rod assembly, and the bearing rod penetrates through the first sliding groove hole and can slide up and down in the first sliding groove hole; the connecting rod assembly comprises a cantilever rod and a pull rod, the cantilever rod is hinged to the bottom end of the hoisting piece, and one end of the pull rod penetrates through the second sliding groove hole; when the connecting rod assembly extends out of the sleeve, the pull rod can slide downwards in the second sliding groove hole, so that the cantilever rod rotates relative to the hoisting piece and expands.
Furthermore, the connecting rod assembly further comprises a first limiting rod and a second limiting rod, wherein one end of the first limiting rod is hinged with one end of the second limiting rod to form a first hinge center; the other end of the first limiting rod is hinged to the hoisting piece, the other end of the second limiting rod is hinged to the cantilever rod, a second hinge center is formed, and the second hinge center is located between the two ends of the cantilever rod.
Further, the pull rod is hinged to the first hinge center; the cantilever rod is provided with a folding position and an unfolding position, when the pull rod slides upwards in the second sliding groove hole, an acute angle is formed between the cantilever rod and the hoisting piece, and the cantilever rod is located at the folding position; when the pull rod slides downwards in the second sliding groove hole and the connecting rod assembly extends out of the inner cavity of the sleeve, the cantilever rod and the hoisting piece are at a right angle, the pull rod and the second limiting rod are collinear, and the cantilever rod is located at the unfolding position.
Furthermore, a lock catch is arranged on the outer side of the sleeve and arranged on the first sliding groove hole and used for locking the relative position of the bearing rod in the first sliding groove hole.
Further, the sleeve pipe still is provided with the direction sliding sleeve, hoist and mount piece wears to locate the direction sliding sleeve.
Furthermore, the first sliding groove holes are two, the two first sliding groove holes are arranged oppositely, and the hoisting piece is correspondingly provided with two bearing rods.
Another object of the present invention is to provide a cover plate lifting device, which does not need to precisely position and replace the lifting hook, and is simple and convenient to operate and has a certain versatility.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a cover plate lifting device comprises a rack and the lifting mechanism, wherein a sleeve is movably arranged on the rack and can move up and down along the vertical direction.
Furthermore, the cover plate hoisting device further comprises a lifting mechanism, and the output end of the lifting mechanism is connected with the sleeve.
Further, the frame includes the carriage and supports a plurality of bracing pieces of carriage, the carriage includes longeron and two crossbeams of relative setting, the longeron cunning is located two between the crossbeam, and can lateral shifting on the crossbeam, elevating system cunning is located on the longeron, and can longitudinal movement on the longeron.
Furthermore, the bottom end of the supporting rod is provided with a universal wheel.
The invention has the beneficial effects that:
the invention provides a hoisting mechanism which comprises a sleeve and a hoisting piece positioned in an inner cavity of the sleeve and is used for hoisting a cable trench cover plate. The hoisting piece is provided with a bearing rod, a cantilever rod and a pull rod, the bearing rod and the pull rod are respectively arranged in the first sliding groove hole and the second sliding groove hole of the sleeve in a penetrating manner, and the cantilever rod is hinged to the bottom end of the hoisting piece. When the bearing rod slides downwards in the first sliding groove hole, the cantilever rod extends out of the sleeve, and the pull rod can slide in the second sliding groove hole, so that the cantilever rod rotates and expands relative to the hoisting piece. The sleeve is stretched into the hoisting hole of the cover plate, then the cantilever rod is unfolded and forms a cantilever hook with the hoisting piece to hoist the cover plate. Because the cantilever rod is folded and placed in the sleeve, the sleeve extends into the hoisting hole of the cover plate, and the cantilever rod is unfolded at the lower end of the cover plate to form a cantilever hook. Compared with the prior art, the hoisting mechanism is simple in structure and convenient to operate. Meanwhile, accurate positioning is not needed, and only the sleeve is required to extend into the hoisting hole of the cover plate. Moreover, the problem that the traditional hook is not matched with the size of the hoisting hole to cause the replacement of the hook is avoided, and the hoisting mechanism has certain universality.
The cover plate hoisting device provided by the invention comprises a rack and the hoisting mechanism, wherein the cantilever rod is folded and placed in the sleeve, the sleeve extends into the hoisting hole of the cover plate, and the cantilever rod is unfolded at the lower end of the cover plate to form a cantilever hook. The cover plate lifting device is simple in structure, does not need to be accurately positioned, and is convenient to operate. Meanwhile, the problem that the size of the hook and the size of the hoisting hole are not matched to cause replacement of the hook is avoided, and the cover plate hoisting device has certain universality.
Drawings
Fig. 1 is a schematic structural diagram of a bushing according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the interior of a bushing provided in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
fig. 5 is a schematic structural diagram of a cover plate lifting device according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is an enlarged view of a portion of FIG. 5 at D;
fig. 8 is a partial enlarged view at E in fig. 5.
The figures are numbered and numbered as follows:
1. a sleeve; 11. a first sliding slot hole; 12. a second sliding slot hole; 13. locking;
2. hoisting a piece; 21. a load-bearing bar; 22. a cantilever bar; 23. a pull rod; 24. a first limit rod; 25. a second limiting rod; 26. a guide sliding sleeve; 201. a first hinge center; 202. a second hinge center;
3. a frame; 31. a carriage; 311. a cross beam; 312. a stringer; 313. a locking structure; 32. a support bar; 4. a lifting mechanism; 5. a universal wheel.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in figures 1-3 and 5-7, the embodiment discloses a hoisting mechanism comprising a sleeve 1 and a hoisting piece 2. The sleeve 1 is provided with a first slotted hole 11 and a second slotted hole 12 in the vertical direction from top to bottom in sequence. The hoisting piece 2 is positioned in the inner cavity of the sleeve 1, the hoisting piece 2 is provided with a bearing rod 21 and a connecting rod assembly, and the bearing rod 21 penetrates through the first sliding groove hole 11 and can slide up and down in the first sliding groove hole 11; the connecting rod assembly comprises a cantilever rod 22 and a pull rod 23, the cantilever rod 22 is hinged to the bottom end of the hoisting piece 2, and one end of the pull rod 23 penetrates through the second sliding slot hole 12; when the connecting-rod assembly is extended out of the sleeve 1, the tie-rod 23 can slide downwards inside the second sliding-slot hole 12, so that the cantilever rod 22 rotates and spreads out with respect to the sling 2.
In this embodiment, the hoisting mechanism is used for hoisting the cable trench cover plate. Because the cantilever rod 22 is folded and placed in the sleeve 1, the sleeve 1 extends into the hoisting hole of the cover plate, and the cantilever rod 22 extending out of the inner cavity of the sleeve is unfolded at the lower end of the cover plate to form a cantilever hook. Compared with the prior art, the hoisting mechanism is simple in structure and convenient to operate. Meanwhile, accurate positioning is not needed, and only the sleeve 1 is required to extend into the hoisting hole of the cover plate. And the problem that the traditional hook is not matched with the size of the hoisting hole to cause the replacement of the hook is avoided, so that the hoisting mechanism has certain universality.
Specifically, the hoisting piece 2 is a metal rod. Taking the orientation shown in fig. 1 and 2 as an example, the bottom end of the bushing 1 is open-ended, so that the connecting-rod assembly can protrude out of the bushing 1. Preferably, the outer diameter of the casing 1 is smaller than the diameter of the hoisting hole of the cover plate, so that the casing 1 can smoothly go deep into the hoisting hole. The bearing rod 21 slides downwards in the first sliding slot hole 11 to drive the hoisting piece 2 to slide downwards, so that the cantilever rod 22 extends out of the inner cavity of the sleeve. When the cantilever rod 22 is unfolded to form a cantilever hook and lift the cover plate, the bearing rod 21 is pressed against the bottom end of the first sliding slot hole 11, and the cover plate is lifted by the supporting force of the first sliding slot hole 11 to the bearing rod 21. The pull rod 23 slides upwards in the second slide groove hole 12, so that the cantilever rod 22 can be folded; the pull rod 23 slides downwards in the second slide slot hole 12, enabling the cantilever bar 22 to be unfolded.
As shown in fig. 3, the connecting rod assembly further includes a first limiting rod 24 and a second limiting rod 25, wherein one end of the first limiting rod 24 is hinged to one end of the second limiting rod 25, and forms a first hinge center 201. The other end of the first limiting rod 24 is hinged with the hoisting piece 2, the other end of the second limiting rod 25 is hinged with the cantilever rod 22 to form a second hinge center 202, and the second hinge center 202 is positioned between the two ends of the cantilever rod 22.
Specifically, the cantilever bar 22, the first limiting bar 24, the second limiting bar 25 and the hoisting piece 2 are connected in sequence to form a four-bar linkage structure. Wherein the cantilever bar 22 and the first limit lever 24 are rockers in a four-bar linkage structure. Preferably, the pull rod 23 is hinged to the second hinge center 202, that is, the pull rod 23, the first limiting rod 24 and the second limiting rod 25 are hinged in a crossed manner and form the first hinge center 201. The pull rod 23, as a driving rod, slides in the second sliding slot hole 12, and drives the first limiting rod 24 and the cantilever rod 22 to rotate, so that the cantilever rod 22 has a folded position and an unfolded position. When the pull rod 23 slides upwards in the second sliding slot hole 12, an acute angle is formed between the cantilever rod 22 and the hoisting piece 2, and the cantilever rod 22 is located at a folding position; when the pull rod 23 slides downwards in the second sliding slot hole 12 and the connecting rod assembly extends out of the inner cavity of the sleeve 1, the cantilever rod 22 and the hoisting piece 2 form a right angle, the pull rod 23 and the second limiting rod 25 are collinear, and the cantilever rod 22 is located at the unfolding position.
The cantilever rod 22 can be switched between the folded position and the unfolded position by sliding the pull rod 23 up and down in the second slide groove hole 12. The hoisting mechanism is simple in structure and convenient to operate, and the hoisting efficiency of the hoisting mechanism is improved.
As shown in fig. 4, the casing 1 is further provided with a guide sliding bush 26, and the sling 2 is arranged through the guide sliding bush 26. The guide sliding sleeve 26 is fixedly arranged in the inner cavity of the sleeve 1, the hoisting piece 2 is arranged in the guide sliding sleeve 26 in a penetrating mode and can slide up and down in the guide sliding sleeve, the stability of the hoisting piece 2 is improved, the hoisting piece 2 is prevented from shaking when being lifted by a hoisting cover plate, and the improvement of the safety of a hoisting mechanism is facilitated.
As shown in FIG. 6, the outer side of the sleeve 1 is provided with a lock catch 13, and the lock catch 13 is disposed on the first slide slot hole 11 and used for locking the relative position of the bearing bar 21 on the first slide slot hole 11. When the connecting rod assembly is positioned in the inner cavity of the sleeve 1, the lock catch 13 can fix the bearing rod 21 at the upper end of the first sliding slot hole 11, so that the hoisting piece 2 is always positioned in the inner cavity of the sleeve 1. It is understood that the lock catch 13 may be provided in a plurality of numbers, and the lock catches 13 are respectively disposed at different positions on the first slide slot hole 11, so that the bearing bar 21 can be fixed at different positions of the first slide slot hole 11. The latch 13 is a conventional technique in the art, and the detailed structure thereof will not be described.
As shown in fig. 5, the embodiment further discloses a cover plate hoisting device, which comprises a frame 3 and the hoisting mechanism, wherein the sleeve 1 is movably arranged on the frame 3 and can move up and down along the vertical direction.
Specifically, the cover plate hoisting device further comprises a lifting mechanism 4, and the output end of the lifting mechanism 4 is connected with the sleeve 1. The lifting mechanism 4 is preferably an electric push rod, so that the sleeve 1 has a high moving accuracy. Of course, the lifting mechanism 4 may also be a hydraulic rod and an air cylinder, and the lifting mechanism 4 capable of moving the casing 1 up and down is a conventional technical means in the field, and will not be described herein again.
As shown in fig. 5 and 8, the rack 3 includes a sliding rack 31 and a plurality of support rods 32 supporting the sliding rack 31, the sliding rack 31 includes a longitudinal beam 312 and two opposite beams 311, the longitudinal beam 312 is slidably disposed between the two beams 311 and can move transversely on the beams 311, and the lifting mechanism 4 is slidably disposed on the longitudinal beam 312 and can move longitudinally on the longitudinal beam 312.
In the present embodiment, there are four support rods 32, and the sliding rack 31 is a rectangular frame disposed on the top ends of the four support rods 32. Preferably, universal wheels are mounted to the bottom ends of the support rods 32 so that the cover lifting device can be moved quickly in all directions. It is further preferred that the castor has a braking function so that the frame 3 can be stopped at a given position. Sliding grooves (not shown) are formed in the two cross beams 311 of the sliding frame 31, two ends of the longitudinal beam 312 are respectively arranged in the corresponding sliding grooves, and the longitudinal beam 312 can slide in the sliding grooves to realize transverse movement. The lifting mechanism 4 can move on the longitudinal beam 312, so that the hoisting mechanism can move longitudinally under the driving of the lifting mechanism 4. Therefore, the hoisting mechanism can realize vertical up-and-down movement, transverse movement and longitudinal movement on the rack 3, so that the hoisting mechanism can rapidly move to the upper part of the hoisting hole of the cover plate conveniently, the position of the hoisting mechanism can be rapidly adjusted, and the hoisting efficiency is improved.
It should be noted that the cover plate of the cable trench generally has two hoisting holes. Therefore, the carriage 31 is correspondingly provided with two longitudinal beams 312 capable of moving transversely on the cross beam 311, and each longitudinal beam 312 is provided with a lifting mechanism 4 and a hoisting mechanism connected with the output end of the lifting mechanism 4. The two hoisting mechanisms respectively correspond to the two hoisting holes in the cover plate, so that the cover plate is stressed uniformly during hoisting.
As shown in fig. 8, a locking structure 313 is installed between the lifting mechanism 4 and the side member 312 in order to ensure safe operation of the deck lifting device. The locking structure 313 can be switched between an open state and a locked state. When the locking structure 313 is in the open state, the lifting mechanism 4 can slide on the longitudinal beam 312 to the target position, the locking structure 313 locks the lifting mechanism 4, and the locking structure 313 is switched to the locked state, so that the relative position of the lifting mechanism 4 and the longitudinal beam 312 is fixed. It can be understood that a locking structure 313 is also arranged between the cross beam 311 and the longitudinal beam 312, so that after the longitudinal beam 312 slides on the cross beam 311 to a target position, the locking structure 313 fixes the relative positions of the longitudinal beam 312 and the cross beam 311, the position of the hoisting mechanism on the frame 3 can be adjusted and controlled, and the hoisting efficiency and the safety of the cover plate hoisting device are improved.
For the convenience of understanding, the specific working process of the cover plate hoisting device is as follows:
the cover plate hoisting device is moved to the position above the cover plate, the locking structure 313 is located in an open state, the relative positions of the two longitudinal beams 312 on the cross beam 311 on the cover plate hoisting device and the relative positions of the two lifting mechanisms 4 on the respective corresponding longitudinal beams 312 are adjusted, so that the two lifting mechanisms are respectively located above the two hoisting holes in the cover plate and are opposite to the two hoisting holes, and the locking structure 313 is adjusted to a locking state.
And starting the lifting mechanism 4 to drive the sleeves 1 of the hoisting mechanism to extend into the corresponding hoisting holes. Then, the lock catch 13 is opened, and the bearing bar 21 slides to the bottom end of the first slide slot hole 11. At this time, the cantilever rod 22 extends out of the inner cavity of the casing 1, and the pull rod 23 slides downwards in the second slide groove hole 12, so that the cantilever rod 22 is unfolded to form a cantilever hook and is hooked at the bottom of the cover plate. The lifting mechanism 4 drives the sleeve 1 to ascend in the vertical direction and drives the cover plate to be separated from the cable trench, and the cover plate lifting device and the cover plate are moved to other positions.
After the maintenance work is finished, the cover plate is moved back to the original position, the pull rod 23 slides upwards in the first sliding groove hole 11, the cantilever rod 22 is switched to the folding position from the unfolding position, the bearing rod 21 is pulled to be above the first sliding groove hole 11, the cantilever rod 22 is retracted into the inner cavity of the sleeve 1, the position of the bearing rod 21 is fixed by the lock catch 13, and the lifting mechanism 4 is started to take out the sleeve from the through hole of the cover plate.
The cover plate lifting device is simple in structure, does not need to be accurately positioned, and is convenient to operate. Meanwhile, the problem that the size of the hook and the size of the hoisting hole are not matched to cause replacement of the hook is avoided, and the cover plate hoisting device has certain universality.
Example two
The hoisting mechanism and the cover plate hoisting device in the embodiment are the same as those in the first embodiment in structure and working principle, and the main difference points are as follows:
the first sliding slot holes 11 are two, the two first sliding slot holes 11 are oppositely arranged, and the hoisting piece 2 is correspondingly provided with two bearing rods 21. Two bearing rods 21 make hoist and mount piece 2 atress more even when lifting by crane the apron, are favorable to improving hoist and mount stability of mechanism, avoid hoist and mount piece 2 to take place to incline or rock.
The vertical direction in this application is shown as the H direction in fig. 2, the lateral direction is shown as the X direction in fig. 5, and the longitudinal direction is shown as the Y direction in fig. 5.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A hoisting mechanism, comprising:
the sleeve (1) is provided with a first sliding slot hole (11) and a second sliding slot hole (12) in sequence from top to bottom in the vertical direction;
the hoisting piece (2) is positioned in the inner cavity of the sleeve (1), the hoisting piece (2) is provided with a bearing rod (21) and a connecting rod assembly, and the bearing rod (21) penetrates through the first sliding groove hole (11) and can slide up and down in the first sliding groove hole (11); the connecting rod assembly comprises a cantilever rod (22) and a pull rod (23), the cantilever rod (22) is hinged to the bottom end of the hoisting piece (2), and one end of the pull rod (23) penetrates through the second sliding groove hole (12); when the connecting rod assembly extends out of the sleeve (1), the pull rod (23) can slide downwards in the second sliding groove hole (12) so that the cantilever rod (22) rotates and expands relative to the hoisting piece (2).
2. The hoisting mechanism according to claim 1 wherein said connecting rod assembly further comprises a first stop rod (24) and a second stop rod (25), one end of said first stop rod (24) being hinged to one end of said second stop rod (25) and forming a first hinge center (201); the other end of the first limiting rod (24) is hinged to the hoisting piece (2), the other end of the second limiting rod (25) is hinged to the cantilever rod (22) to form a second hinge center (202), and the second hinge center (202) is located between two ends of the cantilever rod (22).
3. Hoisting mechanism according to claim 2, characterized in that said pull rod (23) is hinged to said first hinge centre (201); the cantilever rod (22) has a folded position and an unfolded position, when the pull rod (23) slides upwards in the second sliding slot hole (12), an acute angle is formed between the cantilever rod (22) and the hoisting piece (2), and the cantilever rod (22) is located at the folded position; when the pull rod slides downwards in the second sliding groove hole (12) and the connecting rod assembly extends out of the inner cavity of the sleeve (1), the cantilever rod (22) and the hoisting piece (2) form a right angle, the pull rod (23) and the second limiting rod (25) are collinear, and the cantilever rod (22) is located at the unfolding position.
4. Hoisting mechanism according to claim 1, characterized in that the outside of said sleeve (1) is provided with a catch (13), said catch (13) being arranged on said first slotted slide hole (11) for locking the relative position of said bearing bar (21) in said first slotted slide hole (11).
5. Hoisting mechanism according to claim 1, characterized in that said sleeve (1) is further provided with a guiding sliding bush (26), said sling (2) being pierced in said guiding sliding bush (26).
6. Hoisting mechanism according to claim 1, characterized in that said first slotted hole (11) is provided with two, said two first slotted holes (11) being arranged opposite each other, said hoisting member (2) being provided with two corresponding load-bearing bars (21).
7. A cover plate hoisting device is characterized by comprising a rack (3) and the hoisting mechanism of any one of claims 1 to 6, wherein the sleeve (1) is movably arranged on the rack (3) and can move up and down along the vertical direction.
8. The cover plate hoisting device according to claim 7, characterized in that it further comprises a lifting mechanism (4), the output end of the lifting mechanism (4) being connected to the casing (1).
9. Cover lifting device according to claim 8, characterized in that the frame (3) comprises a sliding carriage (31) and a plurality of support bars (32) supporting the sliding carriage (31), the sliding carriage (31) comprises a longitudinal beam (312) and two oppositely arranged transverse beams (311), the longitudinal beam (312) is slidably arranged between the two transverse beams (311) and can move transversely on the transverse beams (311), and the lifting mechanism (4) is slidably arranged on the longitudinal beam (312) and can move longitudinally on the longitudinal beam (312).
10. Cover plate hoisting device according to claim 9, characterized in that the bottom end of the support bar (32) is fitted with a universal wheel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628360.1A CN111762735B (en) | 2020-07-01 | 2020-07-01 | Hoisting mechanism and cover plate hoisting device |
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| CN202010628360.1A CN111762735B (en) | 2020-07-01 | 2020-07-01 | Hoisting mechanism and cover plate hoisting device |
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| CN111762735A true CN111762735A (en) | 2020-10-13 |
| CN111762735B CN111762735B (en) | 2022-01-18 |
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| CN111762735B (en) | 2022-01-18 |
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