CN114803834B - Quick unloading lifting appliance with anti-disengaging structure - Google Patents
Quick unloading lifting appliance with anti-disengaging structure Download PDFInfo
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- CN114803834B CN114803834B CN202210740583.6A CN202210740583A CN114803834B CN 114803834 B CN114803834 B CN 114803834B CN 202210740583 A CN202210740583 A CN 202210740583A CN 114803834 B CN114803834 B CN 114803834B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to the technical field of sling design, in particular to a quick unloading sling with an anti-falling structure, which comprises a lifting hook, a hinged part, a connecting part, an arc-shaped sling hook part, a control device, an operating rod mechanism, a connecting plate, a bendable safety plate device, a first torsion spring and a second torsion spring, wherein the lifting hook consists of the hinged part, the connecting part and the arc-shaped sling hook part, the control device comprises a horizontal operating rod mechanism and a horizontal connecting plate, the bendable safety plate device comprises the first torsion spring for recovering the straight state, the second torsion spring is used for driving the bendable safety plate device to rotate, the bendable safety plate device is prevented from slipping by bending, the rotation of the bendable safety plate device and the installation and the disassembly of a hanging strip are not mutually blocked, the installation and the disassembly speed of the hanging strip are improved, the bendable safety plate device is unidirectionally bent, so that the hanging strip can not push the bendable safety plate device to bend from the inner side of the arc-shaped sling hook part, when the goods are hoisted, the operating rod mechanism is clamped and fixed, and is suitable for slings of various specifications.
Description
Technical Field
The invention relates to the technical field of sling design, in particular to a quick unloading sling with an anti-falling structure.
Background
The crane refers to a multi-action hoisting machine, also called a crown block, a gantry crane, a crane, for vertically lifting and horizontally carrying heavy objects within a certain range, and a hoisting machine used in bridge construction engineering, and can be generally divided into four categories, i.e., a light and small hoisting device, a bridge type hoisting machine, a boom type crane and a cable type crane, according to the difference of the structure and the performance of the crane. Light and small-sized hoisting equipment such as: jacks, pneumatic hoists, electric hoists, balance hoists (balance hoists), winches and the like. Gantry type hoisting machines such as beam cranes and the like. Boom-type cranes such as fixed slewing cranes, tower cranes, truck cranes, tyre cranes, crawler cranes, etc. Cable hoists such as elevators and the like.
In the hoist of current hoist, contradict at the tip of lifting hook formation closed loop with the tip of insurance board, the suspender slippage has been prevented, the security has been improved, because there is very big overlap in insurance board rotation range and the part of lifting hook endotheca setting lifting hook, make the suspender can hinder the rotation of insurance board, when installing the suspender, it is rotatory to promote the inboard of insurance board lifting hook, after the suspender overlaps on the lifting hook, the suspender can hinder the insurance board and resume the normal position, when unloading the suspender, need promote the insurance board to the direction that is close to the lifting hook inboard, and the suspender of establishing on the lifting hook can hinder the lower extreme of insurance board, make the insurance board can't open, influence work efficiency, consequently, need design a quick unloading hoist with anti-disengaging structure.
Disclosure of Invention
In view of the above, there is a need to provide a quick unloading sling with an anti-drop structure for solving the problems in the prior art.
In order to solve the problems of the prior art, the invention adopts the technical scheme that: a quick release spreader with anti-drop structure, comprising:
the lifting hook consists of a hinged part, a vertical connecting part and an arc-shaped lifting hook part, the upper end and the lower end of the connecting part are fixedly connected with the hinged part and the arc-shaped lifting hook part, and the axis of the hinged part is parallel to the axis of the arc-shaped lifting hook part;
the control device is fixed on the connecting part and comprises a horizontal operating rod mechanism and a horizontal connecting plate, and the operating rod mechanism and the connecting plate synchronously and vertically move;
the upper end of the bendable safety plate device is hinged with one side of the connecting plate, which is far away from the connecting part, the lower end of the bendable safety plate device is abutted against the inner side of the end part of the arc-shaped hook part, and the two ends of the bendable safety plate device can be bent towards the direction far away from the inner side of the arc-shaped hook part;
and the second torsion spring is positioned at the hinged position of the bendable safety plate device and the connecting plate and is used for driving the bendable safety plate device to rotate towards the direction far away from the arc-shaped hook part.
Further, the bendable safety plate device further comprises:
the first safety plate is a tilting device, the upper end of the first safety plate is hinged with the connecting plate through a first hinge bolt, the lower end of the first safety plate tilts towards the direction close to the end part of the arc-shaped hook part, the second torsion spring is sleeved on the first hinge bolt, and two ends of the second torsion spring respectively abut against the lower end of the connecting plate and one side, close to the connecting part, of the first safety plate;
the second safety plate is parallel to the first safety plate, the upper end of the second safety plate is hinged to the lower end of the first safety plate through a second hinge bolt, the first torsion spring is sleeved on the second hinge bolt, two ends of the first torsion spring are respectively abutted against one side, away from the arc-shaped hook part, of the second safety plate and one side, away from the arc-shaped hook part, of the first safety plate, and the lower end of the second safety plate is abutted against the inner side of the end part of the arc-shaped hook part;
the limiting plate is parallel to the first safety plate, one end of the limiting plate is fixedly arranged on one side, close to the arc-shaped hook portion, of the first safety plate, the other end of the limiting plate abuts on one side, close to the arc-shaped hook portion, of the second safety plate, and an arc-shaped connecting portion avoiding the first torsion spring is formed in the middle of the limiting plate.
Further, the lower extreme shaping of second insurance board has arc portion, the inboard shaping of arc hook portion tip has the horizontally arc draw-in groove, and arc portion card is gone into in the arc draw-in groove.
Further, the control device further includes:
the fixing sleeve is fixedly sleeved on the connecting part;
the box body is fixed on one side of the fixing sleeve, which is close to the end part of the arc-shaped hook part, and the side of the box body, which is close to the arc-shaped hook part, is an opening end;
the end cover is in a vertical state and is fixed on the opening end of the box body;
the sliding seat is positioned in the box body and fixedly arranged on the side wall of the box body close to the connecting part;
the sliding block is connected with the sliding seat in a sliding mode in the vertical direction and fixedly connected with the operating rod mechanism, a vertical first strip-shaped sliding groove is formed in the side wall of the box body, one end of the operating rod mechanism slides outwards to penetrate through the first strip-shaped sliding groove, the connecting plate is fixedly connected with the sliding block, a vertical strip-shaped through groove is formed in the end cover, and the end portion of the connecting plate slides outwards to penetrate through the strip-shaped through groove to be hinged to the first safety plate;
the clamping strip is in a vertical state and located inside the box body, the clamping strip is fixedly arranged on the side wall, opposite to the first strip-shaped sliding groove, of the box body, and the end portion of the operating rod mechanism is connected with the clamping strip in a clamped mode.
Further, the operation lever mechanism includes:
the cylindrical pipe sleeve is in a horizontal state, the axis of the cylindrical pipe sleeve is parallel to the axis of the arc-shaped hook part, the cylindrical pipe sleeve is fixed on the sliding block, and one end of the cylindrical pipe sleeve penetrates through the first strip-shaped sliding groove in a sliding mode;
the operating rod is coaxial with the cylindrical pipe sleeve, a first coaxial annular flange is formed on the end part of the cylindrical pipe sleeve positioned in the box body, the end part of the operating rod penetrates through the cylindrical pipe sleeve in a sliding mode, a second coaxial annular flange is formed on the operating rod and is connected with the inner wall of the cylindrical pipe sleeve in a sliding mode, and the second annular flange abuts against the first annular flange;
the circular end cover is fixedly arranged on the end part of the cylindrical pipe sleeve positioned on the outer side of the box body, and the end part of the operating rod penetrates through the circular end cover in a sliding manner;
the spring is sleeved on the operating rod in a sliding manner and is positioned in the cylindrical pipe sleeve, and two ends of the spring respectively abut against the circular end cover and the second annular flange;
the guide bolt is in a horizontal state, a horizontal second strip-shaped sliding groove is formed in the cylindrical pipe sleeve, the length direction of the second strip-shaped sliding groove is consistent with the axis of the cylindrical pipe sleeve, and the guide bolt penetrates through the second strip-shaped sliding groove in a sliding mode and is fixedly screwed with the second annular flange;
the clamping block is positioned in the box body and fixedly arranged on the end part of the operating rod, and the clamping block is clamped with the clamping strip;
the bulb handle is fixedly arranged at the end part of the operating rod outside the box body.
Further, the shaping has the first wedge portion of a plurality of horizontally of equidistant range along vertical direction on the card strip, and the upper end of every first wedge portion is close to the equal downward sloping in one side of joint piece, the shaping has horizontally second wedge portion on the joint piece, second wedge portion and the first wedge portion joint that corresponds, and one side tilt up that the lower extreme of second wedge portion is close to the card strip.
Further, the cylinder pipe box is fixed on the slider through a plurality of vertical positioning bolt that the equidistance set up along the horizontal direction, the shaping has the circular logical groove with cylinder pipe box coaxial line on the slider, and the cylinder pipe box inserts circular logical inslot, the shaping has the circular positioning groove of a plurality of equidistant setting along the horizontal direction on the lateral wall of cylinder pipe box, and every positioning bolt's upper end all connects soon with the slider to positioning bolt's tip passes in circular lateral wall that leads to the groove inserts circular positioning groove, it dodges logical groove to go back the shaping on the lateral wall of circular logical groove to have the first of supplying the uide bolt to hold.
Furthermore, the connecting plate is fixedly connected with the sliding block through a horizontal auxiliary plate and a plurality of vertical connecting bolts distributed in a matrix state, the auxiliary plate and the connecting plate are respectively abutted against the lower end and the upper end of the sliding block, two ends of each connecting bolt are respectively fixedly connected with the auxiliary plate and the connecting plate, a horizontal first positioning convex strip is formed at the upper end of the auxiliary plate, the length direction of the first positioning convex strip is consistent with the axial direction of the cylindrical pipe sleeve, a first positioning groove for the first positioning convex strip to insert is formed on the lower end of the sliding block, a plurality of horizontal second positioning convex strips which are arranged at equal intervals along the axis direction of the cylindrical pipe sleeve are formed on the lower end of the connecting plate, the length direction of the second positioning convex strips is vertical to the length direction of the first positioning convex strips, and a second positioning groove for inserting a second positioning convex strip is formed in the upper end of the sliding block, and a second avoidance through groove for avoiding a plurality of positioning bolts is formed in the upper end of the auxiliary plate.
Further, still fixedly in the box body be provided with two cushion rubber pieces, two cushion rubber pieces set up along vertical direction interval, and two cushion rubber pieces are located the both ends of first bar spout respectively, and every cushion rubber piece is close to the equal shaping of one side of cylinder pipe box and has the arc recess of laminating cylinder pipe box.
Furthermore, a plurality of anti-skidding grooves are formed in the inner side of the arc-shaped hook part and are arranged close to the second safety plate, the length direction of each anti-skidding groove is consistent with the axis direction of the arc-shaped hook part, and the plurality of anti-skidding grooves are arranged at equal intervals along the axis of the arc-shaped hook part.
Compared with the prior art, the invention has the beneficial effects that: the safety plate device can be bent to form a closed loop with the arc-shaped hook part, so that the hanging strip is prevented from slipping, the rotating range of the safety plate device is arranged on the outer side of the arc-shaped hook part, the rotation of the bendable safety plate device is not hindered by the hanging strip any more, the mounting and dismounting of the hanging strip are not hindered by the bendable safety plate device, the mounting and dismounting speeds of the hanging strip are increased, and the working efficiency is improved;
secondly, the bendable safety plate device is bent in one direction, so that the hanging strip cannot push the bendable safety plate device to bend from the inner side of the arc-shaped hook part, the hanging strip cannot slip off, and the safety is improved;
thirdly, when the goods are hoisted, the operating rod mechanism is clamped and fixed, and the operating rod mechanism can not slide without manual pulling, so that the bendable safety plate device is guaranteed to be always tightly abutted against the end part of the lifting hook, and the safety is improved.
Fourthly, the safety harness is suitable for harnesses with various specifications, and the larger the specification of the harnesses is, the higher the safety is.
Drawings
FIG. 1 is a schematic perspective view of the embodiment with a harness attached;
FIG. 2 is a first perspective view of the bendable bumper device according to the embodiment;
FIG. 3 is a schematic perspective view of a bendable bumper apparatus according to an embodiment;
FIG. 4 is a schematic perspective view of a hook according to an embodiment;
FIG. 5 is a schematic perspective view of a control device according to an embodiment;
fig. 6 is a schematic perspective view of the embodiment of fig. 5 with the retaining sleeve and end cap removed;
FIG. 7 is a first perspective view of the embodiment shown in FIG. 6 with the cartridge removed;
FIG. 8 is a schematic perspective view of the second embodiment of FIG. 6 with the cartridge removed;
FIG. 9 is a perspective view of the operating lever mechanism of the embodiment;
FIG. 10 is a schematic perspective view of the embodiment of FIG. 9 with the cylindrical sleeve removed;
FIG. 11 is a perspective view of a cylindrical pipe sleeve of an embodiment;
FIG. 12 is a first schematic perspective view of a slider according to an embodiment;
FIG. 13 is a second perspective view of a slider according to an embodiment;
FIG. 14 is a first perspective view of the connection plate, the auxiliary plate and the connection bolt according to the embodiment;
FIG. 15 is a second perspective view of the connection plate, the auxiliary plate and the connection bolt according to the embodiment;
FIG. 16 is a first perspective view of the embodiment with the harness removed;
fig. 17 is a schematic perspective view of the second embodiment when the harness is detached.
The reference numbers in the figures are: 1-a hook; 2-a hinge; 3-a connecting part; 4-arc hook part; 5-a control device; 6-operating lever mechanism; 7-a connecting plate; 8-bendable safety plate devices; 9-a first torsion spring; 10-a second torsion spring; 11-a first safety board; 12-a first hinge pin; 13-a second safety plate; 14-a second hinge pin; 15-limiting plate; 16-an arc-shaped connecting part; 17-an arc; 18-an arc-shaped clamping groove; 19-fixing the sleeve; 20-a box body; 21-end cap; 22-a slide; 23-a slide block; 24-a first bar chute; 25-strip through grooves; 26-a card strip; 27-a cylindrical pipe sleeve; 28-a lever; 29-a first annular flange; 30-a second annular flange; 31-circular end cap; 32-a spring; 33-a guide pin; 34-a second strip-shaped chute; 35-a clamping block; 36-ball head handle; 37-a first wedge; 38-a second wedge; 39-a positioning bolt; 40-circular through grooves; 41-circular positioning groove; 42-a first avoidance through groove; 43-an auxiliary plate; 44-connecting bolt; 45-first positioning convex strips; 46-a first positioning groove; 47-second positioning ribs; 48-a second positioning groove; 49-a second avoidance through groove; 50-a cushion rubber block; 51-an arc-shaped groove; 52-non-slip groove.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 17, a quick release spreader with an anti-drop structure includes:
the lifting hook 1 consists of a hinge part 2, a vertical connecting part 3 and an arc-shaped hook part 4, wherein the upper end and the lower end of the connecting part 3 are fixedly connected with the hinge part 2 and the arc-shaped hook part 4, and the axis of the hinge part 2 is parallel to the axis of the arc-shaped hook part 4;
the control device 5 is fixed on the connecting part 3, the control device 5 comprises a horizontal operating rod mechanism 6 and a horizontal connecting plate 7, and the operating rod mechanism 6 and the connecting plate 7 synchronously move vertically;
the upper end of the bendable safety plate device 8 is hinged with one side, far away from the connecting part 3, of the connecting plate 7, the lower end of the bendable safety plate device 8 abuts against the inner side of the end part of the arc-shaped hook part 4, two ends of the bendable safety plate device 8 can be bent towards the direction far away from the inner side of the arc-shaped hook part 4, and the bendable safety plate device 8 comprises a first torsion spring 9 used for enabling the bendable safety plate device 8 to be straight;
and the second torsion spring 10 is positioned at the hinged position of the bendable safety plate device 8 and the connecting plate 7, and the second torsion spring 10 is used for driving the bendable safety plate device 8 to rotate towards the direction far away from the arc-shaped hook part 4.
The hoisting equipment and the sling are both in the prior art, are not shown in the figure, and the hinge part 2 is hinged with the hoisting equipment.
When the hanging strip needs to be put into the arc-shaped hanging hook part 4 or the hanging strip needs to be taken out of the arc-shaped hanging hook part 4, the end part of the bendable safety plate device 8 is required to be separated from the end part of the arc-shaped hook part 4, the operating rod mechanism 6 in the control device 5 is pushed upwards by hand to drive the connecting plate 7 to vertically move upwards, the end part of the connecting plate 7 drives the bendable safety plate device 8 to move upwards, so that the lower end of the bendable safety plate device 8 slides upwards on the inner side of the arc-shaped hook part 4 until the lower end of the bendable safety plate device 8 slips off from the end part of the arc-shaped hook part 4, under the action of the second torsion spring 10, the bendable safety plate device 8 is driven to slide around the hinged position with the connecting plate 7 to the direction far away from the arc-shaped hook part 4, thereby enabling the hanging strip to be detached from the arc-shaped hook part 4 or sleeving the hook 1 on the arc-shaped hook part 4.
When the hanging strip is sleeved on the arc-shaped hook part 4 and the bendable safety plate device 8 and the arc-shaped hook part 4 need to form a closed loop, the operating rod mechanism 6 is vertically restored downwards to the original position, the connecting plate 7 is driven to move downwards to the original position, one end of the bendable safety plate device 8 is driven to restore downwards to the original position, at the moment, the bendable safety plate device 8 is pushed towards the direction close to the arc-shaped hook part 4 by hands, the second torsion spring 10 is extruded, the lower end of the bendable safety plate device 8 can be abutted against the outer side of the end part of the arc-shaped hook part 4, the bendable safety plate device 8 is continuously pushed towards the direction close to the arc-shaped hook part 4, the first torsion spring 9 is extruded, the two ends of the bendable safety plate device 8 are bent towards the direction far away from the inner side of the arc-shaped hook part 4, and the lower end of the bendable safety plate device 8 slides to the inner side of the end part of the arc-shaped hook part 4 from the outer side of the end part of the arc-shaped hook part 4, under the effect of first torsion spring 9, 8 safety plate devices that can buckle resume straight, no longer promote 8 safety plate devices that can buckle this moment, under the effect of second torsion spring 10, drive 8 safety plate devices that can buckle to the direction rotation of keeping away from arc hook portion 4 for the lower extreme of 8 safety plate devices that can buckle tightly contradicts at the inboard of 4 tip of arc hook portion, thereby with the suspender spacing on arc hook portion 4, prevent 4 slippage of arc hook portion.
Because the bendable safety plate device 8 does not need to rotate at the inner side of the arc-shaped hook part 4, the hanging strip can not block the rotation of the bendable safety plate device 8, the hanging strip can adopt a large specification, and the safety is improved.
The bendable safe device 8 further comprises:
the first safety plate 11 is an inclined device, the upper end of the first safety plate 11 is hinged to the connecting plate 7 through a first hinge bolt 12, the lower end of the first safety plate 11 inclines towards the direction close to the end part of the arc-shaped hook part 4, the second torsion spring 10 is sleeved on the first hinge bolt 12, and two ends of the second torsion spring 10 are respectively abutted to the lower end of the connecting plate 7 and one side, close to the connecting part 3, of the first safety plate 11;
the second safety plate 13 is parallel to the first safety plate 11, the upper end of the second safety plate 13 is hinged to the lower end of the first safety plate 11 through a second hinge bolt 14, the first torsion spring 9 is sleeved on the second hinge bolt 14, two ends of the first torsion spring 9 are respectively abutted against one side, away from the arc-shaped hook part 4, of the second safety plate 13 and one side, away from the arc-shaped hook part 4, of the first safety plate 11, and the lower end of the second safety plate 13 is abutted against the inner side of the end part of the arc-shaped hook part 4;
the limiting plate 15 is parallel to the first safety plate 11, one end of the limiting plate 15 is fixedly arranged on one side, close to the arc-shaped hook portion 4, of the first safety plate 11, the other end of the limiting plate 15 abuts against one side, close to the arc-shaped hook portion 4, of the second safety plate 13, and an arc-shaped connecting portion 16 avoiding the first torsion spring 9 is formed in the middle of the limiting plate 15.
The two ends of the first torsion spring 9 push the first safety plate 11 and the second safety plate 13 to unfold straightly, the end part of the second safety plate 13 is butted against the limit plate 15,
when the hanging strip is sleeved on the arc-shaped hook part 4, and the bendable safety plate device 8 and the arc-shaped hook part 4 need to form a closed loop, the first safety plate 11 is pushed to rotate towards the direction close to the arc-shaped hook part 4, the first safety plate 11 rotates around the first hinge bolt 12, the first safety plate 11 can extrude the second spring 32 when rotating towards the direction close to the arc-shaped hook part 4, the second safety plate 13 is driven to move towards the direction close to the arc-shaped hook part 4, the lower end of the second safety plate 13 is firstly contacted with the outer side of the end part of the arc-shaped hook part 4, the first safety plate 11 is continuously pushed towards the direction close to the arc-shaped hook part 4, at the moment, the second safety plate 13 rotates around the second hinge bolt 14, the first torsion spring 9 is compressed, the distance between the upper end of the first safety plate 11 and the upper end of the second safety plate 13 is reduced, so that the lower end of the second safety plate 13 slides into the inner side of the end part of the arc-shaped hook part 4 from the outer side of the end part of the arc-shaped hook part 4, at this moment, the first safety plate 11 does not need to be pushed any more, the first torsion spring 9 can drive the first safety plate 11 and the second safety plate 13 to restore to be straight, the second safety plate 13 can abut against the limiting plate 15, and the lower end of the second safety plate 13 can be driven to abut against the inner side of the end part of the arc-shaped hook part 4 under the action of the second torsion spring 10.
Under the action of the limiting plate 15, the ends of the first and second safety plates 11 and 13 connected to the second hinge bolt 14 can only be bent toward the direction close to the arc-shaped hook portion 4, so that the hanging strip can be limited on the arc-shaped hook portion 4.
An arc-shaped part 17 is formed at the lower end of the second safety plate 13, a horizontal arc-shaped clamping groove 18 is formed on the inner side of the end part of the arc-shaped hook part 4, and the arc-shaped part 17 is clamped into the arc-shaped clamping groove 18.
Because the tip of second insurance board 13 need slide on arc hook portion 4, adopt arc portion 17, can reduce sliding resistance, when establishing the suspender cover on arc hook portion 4, when needing to become closed loop with arc hook portion 4 composition with bendable insurance board device 8, arc portion 17 can just block into arc draw-in groove 18, plays the effect of location, and can also make the tight conflict of lower extreme of second insurance board 13 on arc hook portion 4.
When the hanging strip needs to be placed into the arc-shaped hanging hook part 4 or taken out from the arc-shaped hanging hook part 4, the connecting plate 7 can drive the bendable safety plate device 8 to move upwards, the arc-shaped part 17 slides out of the arc-shaped clamping groove 18, and the resistance of the arc-shaped part 17 during sliding can be reduced.
The control device 5 further includes:
a fixing sleeve 19, the fixing sleeve 19 is arranged on the connecting part 3;
the box body 20 is fixed on one side of the fixed sleeve 19 close to the end part of the arc-shaped hook part 4, and one side of the box body 20 close to the arc-shaped hook part 4 is an opening end;
an end cap 21 fixed to an opening end of the case 20 in a vertical state;
the sliding seat 22 is positioned inside the box body 20 and fixedly arranged on the side wall of the box body 20 close to the connecting part 3;
the sliding block 23 is connected with the sliding seat 22 in a sliding manner along the vertical direction, the sliding block 23 is fixedly connected with the operating rod mechanism 6, a vertical first strip-shaped sliding groove 24 is formed in the side wall of the box body 20, one end of the operating rod mechanism 6 slides outwards to penetrate through the first strip-shaped sliding groove 24, the connecting plate 7 is fixedly connected with the sliding block 23, a vertical strip-shaped through groove 25 is formed in the end cover 21, and the end part of the connecting plate 7 slides outwards to penetrate through the strip-shaped through groove 25 to be hinged to the first insurance board 11;
the clamping strip 26 is in a vertical state and located inside the box body 20, the clamping strip 26 is fixedly arranged on the side wall of the box body 20 opposite to the first strip-shaped sliding groove 24, and the end part of the operating rod mechanism 6 is clamped with the clamping strip 26.
When the hanging strip needs to be placed into the arc-shaped hanging hook portion 4 or taken out from the arc-shaped hanging hook portion 4, the end portion of the operating rod mechanism 6 is separated from the clamping strip 26, the operating rod mechanism 6 is pushed upwards, the operating rod mechanism 6 vertically upwards slides in the first strip-shaped sliding groove 24, the sliding block 23 is driven to upwards push on the sliding seat 22, the sliding block 23 drives the connecting plate 7 to vertically upwards slide in the strip-shaped through groove 25, the bendable safety plate device 8 is driven to vertically upwards move, and therefore the lower end of the bendable safety plate device 8 upwards moves to be separated from the end portion of the arc-shaped hanging hook portion 4.
When the hanging strip is sleeved on the arc-shaped hook portion 4, when a closed loop needs to be formed by the bendable safety plate device 8 and the arc-shaped hook portion 4, the operating rod mechanism 6 is pushed downwards, the operating rod mechanism 6 vertically slides downwards in the first strip-shaped sliding groove 24 to drive the sliding block 23 to vertically slide downwards on the sliding seat 22 to drive the connecting plate 7 to move downwards to restore the original position, the end portion of the operating rod mechanism 6 is clamped with the clamping strip 26, the sliding block 23 is fixed on the sliding seat 22, the connecting plate 7 is fixed, and the bendable safety plate device 8 rotates towards the direction close to the arc-shaped hook portion 4, so that the bendable safety plate device 8 and the arc-shaped hook portion 4 form a closed loop.
The operation lever mechanism 6 includes:
the cylindrical pipe sleeve 27 is in a horizontal state, the axis of the cylindrical pipe sleeve 27 is parallel to the axis of the arc-shaped hook part 4, the cylindrical pipe sleeve 27 is fixed on the sliding block 23, and one end of the cylindrical pipe sleeve 27 penetrates through the first strip-shaped sliding groove 24 in a sliding mode;
the operating rod 28 is arranged coaxially with the cylindrical pipe sleeve 27, a first annular flange 29 which is coaxial with the cylindrical pipe sleeve 27 is formed on the end part of the cylindrical pipe sleeve 27 positioned in the box body 20, the end part of the operating rod 28 penetrates through the cylindrical pipe sleeve 27 in a sliding mode, a second annular flange 30 which is coaxial with the cylindrical pipe sleeve 27 is formed on the operating rod 28, the second annular flange 30 is connected with the inner wall of the cylindrical pipe sleeve 27 in a sliding mode, and the second annular flange 30 abuts against the first annular flange 29;
a circular end cap 31 fixedly provided on an end portion of the cylindrical tube housing 27 located outside the case body 20, and an end portion of the operation rod 28 slides through the circular end cap 31;
the spring 32 is sleeved on the operating rod 28 in a sliding manner and is positioned inside the cylindrical pipe sleeve 27, and two ends of the spring 32 are respectively abutted against the circular end cover 31 and the second annular flange 30;
the guide bolt 33 is in a horizontal state, a horizontal second strip-shaped sliding groove 34 is formed in the cylindrical pipe sleeve 27, the length direction of the second strip-shaped sliding groove 34 is consistent with the axis of the cylindrical pipe sleeve 27, and the guide bolt 33 penetrates through the second strip-shaped sliding groove 34 in a sliding mode to be screwed and fixed with the second annular flange 30;
the clamping block 35 is positioned in the box body 20 and fixedly arranged on the end part of the operating rod 28, and the clamping block 35 is clamped with the clamping strip 26;
and a ball knob 36 fixedly disposed on an end portion of the operating lever 28 outside the case 20.
When the connecting plate 7 needs to be driven to vertically move upwards, the ball-end handle 36 is pulled outwards to drive the operating rod 28 to move towards the direction far away from the clamping strip 26, the second annular flange 30 slides towards the direction far away from the clamping strip 26 in the cylindrical pipe sleeve 27, the second annular flange 30 extrudes the spring 32, the end part of the operating rod 28 drives the clamping block 35 to move towards the direction far away from the clamping strip 26, the clamping block 35 is separated from the clamping strip 26, the ball-end handle 36 is pushed upwards to drive the operating rod 28 and the cylindrical pipe sleeve 27 to move upwards, the sliding block 23 is driven to slide upwards to drive the connecting plate 7 to move upwards, the ball-end handle 36 is released, the spring 32 pushes the second annular flange 30 to slide towards the direction close to the first annular flange 29 until the second annular flange 30 abuts against the first annular flange 29, the operating rod 28 is driven to move towards the direction close to the clamping strip 26, and the clamping block 35 is driven to be clamped with the clamping strip 26, the connecting plate 7 is fixed in place.
When the hook 1 is sleeved on the arc-shaped hook part 4 and the connecting plate 7 needs to be vertically moved downwards for restoration, the ball-end handle 36 is pulled outwards to drive the operating rod 28 to move towards the direction far away from the clamping strip 26, the second annular flange 30 slides towards the direction far away from the clamping strip 26 in the cylindrical pipe sleeve 27, the second annular flange 30 extrudes the spring 32, the end part of the operating rod 28 drives the clamping block 35 to move towards the direction far away from the clamping strip 26, the clamping block 35 is separated from the clamping strip 26, the ball-end handle 36 is pushed downwards to drive the operating rod 28 and the cylindrical pipe sleeve 27 to move downwards, the sliding block 23 is driven to slide downwards to drive the connecting plate 7 to move downwards, the ball-end handle 36 is loosened, the spring 32 pushes the second annular flange 30 to slide towards the direction close to the first annular flange 29 until the second annular flange 30 abuts against the first annular flange 29, and the operating rod 28 is driven to move towards the direction close to the clamping strip 26, the clamping block 35 is driven to be clamped with the clamping strip 26 to fix the connecting plate 7.
When the action bars 28 slide, can drive the gim peg 33 and slide in second bar spout 34, reasonable control the displacement range of action bars 28, also avoided the action bars 28 internal rotation at cylinder pipe box 27 simultaneously, because the rotatory joint piece 35 that can drive of operation panel is rotatory for joint piece 35 can't with calorie strip 26 joint, so action bars 28 can not be at cylinder pipe box 27 internal rotation.
The equal downward sloping in one side that the upper end of first wedge portion 37 is close to joint piece 35, the one side tilt up that the lower extreme of second wedge portion 38 is close to card strip 26, when needs move connecting plate 7 downwards, also need not stimulate bulb handle 36, but straight line promotes cylinder pipe box 27 downwards, drive action bars 28 downstream, action bars 28 drives joint piece 35 downstream, when second wedge portion 38 downstream, the inclined plane of second wedge portion 38 is just to the inclined plane of first wedge portion 37, just make joint piece 35 can be on card strip 26 the lapse.
When the clamping block 35 needs to be driven to move upwards, the inclined plane of the second wedge-shaped portion 38 and the inclined plane of the first wedge-shaped portion 37 are opposite to each other and cannot directly slide upwards, after the bendable safety plate device 8 and the arc-shaped hook portion 4 form a closed loop, the end portion of the bendable safety plate device 8 and the end portion of the arc-shaped hook portion 4 cannot be separated without manually pulling the ball head handle 36, the hanging strip cannot slip from the arc-shaped hook portion 4 in the using process, and safety is improved.
The cylinder pipe box 27 is fixed on the slider 23 through a plurality of vertical positioning bolts 39 that the equidistant setting of horizontal direction sets up, the shaping has the circular logical groove 40 with cylinder pipe box 27 coaxial line on the slider 23, and cylinder pipe box 27 inserts in the circular logical groove 40, the shaping has the circular positioning groove 41 that a plurality of equidistant setting of horizontal direction set up on the lateral wall of cylinder pipe box 27, and the upper end of every positioning bolt 39 all connects with slider 23 soon to positioning bolt 39's tip passes in the circular positioning groove 41 is inserted to the lateral wall that circular logical groove 40, it dodges logical groove 42 to still the shaping has the first of confession gim peg 33 to hold on the lateral wall of circular logical groove 40.
When the cylindrical pipe sleeve 27 and the sliding block 23 need to be installed together, the cylindrical pipe sleeve 27 is inserted into the circular through groove 40, the positioning bolts 39 are sequentially screwed into the sliding block 23, the cylindrical pipe sleeve 27 is rotated, the circular positioning grooves 41 are aligned with the positioning bolts 39, the positioning bolts 39 are screwed in the direction close to the cylindrical pipe sleeve 27, the end part of each positioning bolt 39 is inserted into the corresponding circular positioning groove 41, and the cylindrical pipe sleeve 27 is fixed on the sliding block 23.
The connecting plate 7 is fixedly connected with the sliding block 23 through a horizontal auxiliary plate 43 and a plurality of vertical connecting bolts 44 distributed in a matrix state, the auxiliary plate 43 and the connecting plate 7 are respectively abutted against the lower end and the upper end of the sliding block 23, two ends of each connecting bolt 44 are respectively fixedly connected with the auxiliary plate 43 and the connecting plate 7, a horizontal first positioning convex strip 45 is formed on the upper end of the auxiliary plate 43, the length direction of the first positioning convex strip 45 is consistent with the axial direction of the cylindrical pipe sleeve 27, a first positioning groove 46 for the first positioning convex strip 45 to insert is formed on the lower end of the sliding block 23, a plurality of horizontal second positioning convex strips 47 arranged at equal intervals along the axial direction of the cylindrical pipe sleeve 27 are formed on the lower end of the connecting plate 7, the length direction of the second positioning convex strips 47 is vertical to the length direction of the first positioning convex strips 45, a second positioning groove 48 for the second positioning convex strips 47 to insert is formed on the upper end of the sliding block 23, a second avoidance through groove 49 for avoiding the plurality of positioning bolts 39 is formed on the upper end of the auxiliary plate 43.
When the connecting plate 7 and the slider 23 need to be fixedly connected, the first positioning convex strips 45 on the auxiliary plate 43 are inserted into the first positioning grooves 46, the second positioning convex strips 47 are inserted into the second positioning grooves 48, the connecting plate 7 and the auxiliary plate 43 are fixed together by a plurality of connecting bolts 44, the slider 23 is tightly clamped by the auxiliary plate 43 and the connecting plate 7, and in order to prevent the connecting plate 7 and the auxiliary plate 43 from sliding on the slider 23, the length direction of the first positioning convex strips 45 is set to be perpendicular to the length direction of the second positioning convex strips 47, so that the connecting plate 7 and the auxiliary plate 43 are firmly fixed on the slider 23.
Still fixedly in the box body 20 be provided with two cushion rubber blocks 50, two cushion rubber blocks 50 set up along vertical direction interval, and two cushion rubber blocks 50 are located the both ends of first bar spout 24 respectively, and every cushion rubber block 50 is close to the equal shaping of one side of cylindrical pipe box 27 and has the arc recess 51 of laminating cylindrical pipe box 27.
When the cylindrical pipe housing 27 moves vertically, the cushion rubber blocks 50 can absorb the impact force when the cylindrical pipe housing 27 moves to both ends of the first linear guide groove 24, and prevent the cylindrical pipe housing 27 from directly colliding with the end of the first linear guide groove 24 at a high speed.
A plurality of anti-slip grooves 52 are formed in the inner side of the arc-shaped hook part 4, the anti-slip grooves 52 are arranged close to the second safety plate 13, the length direction of each anti-slip groove 52 is consistent with the axial direction of the arc-shaped hook part 4, and the anti-slip grooves 52 are arranged at equal intervals along the axial direction of the arc-shaped hook part 4.
When the hanging strip slides to the end part close to the arc-shaped hanging hook part 4, the hanging strip moves to the slipping direction at the moment, the anti-slip groove 52 can increase the friction force and prevent the hanging strip from sliding to the end part close to the arc-shaped hanging hook part 4, and the anti-slip groove 52 is formed only at the end part close to the arc-shaped hanging hook part 4 because the anti-slip groove 52 can increase the abrasion of the hanging strip.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a quick unloading hoist with anti-disengaging structure which characterized in that includes:
the lifting hook (1) consists of a hinge part (2), a vertical connecting part (3) and an arc-shaped hook part (4), the upper end and the lower end of the connecting part (3) are fixedly connected with the hinge part (2) and the arc-shaped hook part (4), and the axis of the hinge part (2) is parallel to the axis of the arc-shaped hook part (4);
the control device (5) is fixed on the connecting part (3), the control device (5) comprises a horizontal operating rod mechanism (6) and a horizontal connecting plate (7), and the operating rod mechanism (6) and the connecting plate (7) synchronously move vertically;
the upper end of the bendable safety plate device (8) is hinged with one side, far away from the connecting part (3), of the connecting plate (7), the lower end of the bendable safety plate device is abutted against the inner side of the end part of the arc-shaped hook part (4), two ends of the bendable safety plate device (8) can be bent towards the direction far away from the inner side of the arc-shaped hook part (4), and the bendable safety plate device (8) comprises a first torsion spring (9) used for enabling the bendable safety plate device (8) to be straightened;
the second torsion spring (10) is positioned at the hinged position of the bendable safety plate device (8) and the connecting plate (7), and the second torsion spring (10) is used for driving the bendable safety plate device (8) to rotate towards the direction far away from the arc-shaped hook part (4);
the control device (5) further comprises:
the fixing sleeve (19), the fixing sleeve (19) is set on the connecting part (3);
the box body (20) is fixed on one side of the fixing sleeve (19) close to the end part of the arc-shaped hook part (4), and one side of the box body (20) close to the arc-shaped hook part (4) is an opening end;
the end cover (21) is in a vertical state and is fixed on the opening end of the box body (20);
the sliding seat (22) is positioned in the box body (20) and fixedly arranged on the side wall of the box body (20) close to the connecting part (3);
the sliding block (23) is connected with the sliding seat (22) in a sliding mode along the vertical direction, the sliding block (23) is fixedly connected with the operating rod mechanism (6), a vertical first strip-shaped sliding groove (24) is formed in the side wall of the box body (20), one end of the operating rod mechanism (6) penetrates through the first strip-shaped sliding groove (24) in an outward sliding mode, the connecting plate (7) is fixedly connected with the sliding block (23), a vertical strip-shaped through groove (25) is formed in the end cover (21), and the end portion of the connecting plate (7) penetrates through the strip-shaped through groove (25) in an outward sliding mode to be hinged to the first safety plate (11);
the clamping strip (26) is in a vertical state and is positioned in the box body (20), the clamping strip (26) is fixedly arranged on the side wall of the box body (20) opposite to the first strip-shaped sliding groove (24), and the end part of the operating rod mechanism (6) is clamped with the clamping strip (26);
the operating lever mechanism (6) includes:
the cylindrical pipe sleeve (27) is in a horizontal state, the axis of the cylindrical pipe sleeve (27) is parallel to the axis of the arc-shaped hook part (4), the cylindrical pipe sleeve (27) is fixed on the sliding block (23), and one end of the cylindrical pipe sleeve (27) penetrates through the first strip-shaped sliding groove (24) in a sliding mode;
the operating rod (28) is arranged coaxially with the cylindrical pipe sleeve (27), a coaxial first annular flange (29) is formed on the end part, located in the box body (20), of the cylindrical pipe sleeve (27), the end part of the operating rod (28) penetrates through the cylindrical pipe sleeve (27) in a sliding mode, a coaxial second annular flange (30) is formed on the operating rod (28), the second annular flange (30) is connected with the inner wall of the cylindrical pipe sleeve (27) in a sliding mode, and the second annular flange (30) abuts against the first annular flange (29);
a circular end cap (31) fixedly arranged on the end part of the cylindrical pipe sleeve (27) positioned on the outer side of the box body (20), and the end part of the operating rod (28) slides through the circular end cap (31);
the spring (32) is sleeved on the operating rod (28) in a sliding mode and located inside the cylindrical pipe sleeve (27), and two ends of the spring (32) are respectively abutted against the circular end cover (31) and the second annular flange (30);
the guide bolt (33) is in a horizontal state, a horizontal second strip-shaped sliding groove (34) is formed in the cylindrical pipe sleeve (27), the length direction of the second strip-shaped sliding groove (34) is consistent with the axis of the cylindrical pipe sleeve (27), and the guide bolt (33) penetrates through the second strip-shaped sliding groove (34) in a sliding mode to be connected and fixed with the second annular flange (30) in a rotating mode;
the clamping block (35) is positioned in the box body (20) and fixedly arranged on the end part of the operating rod (28), and the clamping block (35) is clamped with the clamping strip (26);
and the ball head handle (36) is fixedly arranged on the end part of the operating rod (28) positioned outside the box body (20).
2. A quick release spreader with anti-drop structure according to claim 1, wherein the bendable safety plate means (8) further comprises:
the upper end of the first safety plate (11) is hinged to the connecting plate (7) through a first hinge bolt (12), the lower end of the first safety plate (11) inclines towards the direction close to the end part of the arc-shaped hook hanging part (4), the second torsion spring (10) is sleeved on the first hinge bolt (12), and the two ends of the second torsion spring (10) are respectively abutted to the lower end of the connecting plate (7) and one side, close to the connecting part (3), of the first safety plate (11);
the second safety plate (13) is parallel to the first safety plate (11), the upper end of the second safety plate (13) is hinged to the lower end of the first safety plate (11) through a second hinge bolt (14), the first torsion spring (9) is sleeved on the second hinge bolt (14), two ends of the first torsion spring (9) are respectively abutted to one side, far away from the arc-shaped hook part (4), of the second safety plate (13) and one side, far away from the arc-shaped hook part (4), of the first safety plate (11), and the lower end of the second safety plate (13) is abutted to the inner side of the end part of the arc-shaped hook part (4);
limiting plate (15), parallel with first insurance board (11), the fixed one side that sets up in first insurance board (11) is close to arc couple portion (4) of one end of limiting plate (15) to the other end of limiting plate (15) is contradicted in second insurance board (13) one side that is close to arc couple portion (4), the middle part shaping of limiting plate (15) has arc connecting portion (16) of dodging first torsional spring (9).
3. The quick unloading sling with the anti-dropping structure according to claim 2, wherein an arc-shaped part (17) is formed at the lower end of the second safety plate (13), a horizontal arc-shaped clamping groove (18) is formed on the inner side of the end part of the arc-shaped hook part (4), and the arc-shaped part (17) is clamped in the arc-shaped clamping groove (18).
4. The quick release spreader with the anti-dropping structure as claimed in claim 1, wherein the clamping strip (26) is formed with a plurality of first horizontal wedges (37) which are arranged at equal intervals in the vertical direction, one side of the upper end of each first wedge (37) close to the clamping block (35) is inclined downwards, a second horizontal wedge (38) is formed on the clamping block (35), the second wedge (38) is clamped with the corresponding first wedge (37), and one side of the lower end of the second wedge (38) close to the clamping strip (26) is inclined upwards.
5. The quick release spreader with anti-drop structure as claimed in claim 1, the cylindrical pipe sleeve (27) is fixed on the sliding block (23) through a plurality of vertical positioning bolts (39) which are arranged at equal intervals along the horizontal direction, a circular through groove (40) which is coaxial with the cylindrical pipe sleeve (27) is formed on the sliding block (23), the cylindrical pipe sleeve (27) is inserted into the circular through groove (40), a plurality of circular positioning grooves (41) which are arranged at equal intervals along the horizontal direction are formed on the side wall of the cylindrical pipe sleeve (27), the upper end of each positioning bolt (39) is screwed with the sliding block (23), and the end part of the positioning bolt (39) passes through the side wall of the circular through groove (40) and is inserted into the circular positioning groove (41), and a first avoiding through groove (42) for accommodating the guide bolt (33) is formed on the side wall of the circular through groove (40).
6. The quick unloading sling with the anti-dropping structure as claimed in claim 1, wherein the connecting plate (7) is fixedly connected with the slide block (23) through a horizontal auxiliary plate (43) and a plurality of vertical connecting bolts (44) distributed in a matrix state, the auxiliary plate (43) and the connecting plate (7) respectively abut against the lower end and the upper end of the slide block (23), two ends of each connecting bolt (44) are respectively fixedly connected with the auxiliary plate (43) and the connecting plate (7), a horizontal first positioning convex strip (45) is formed on the upper end of the auxiliary plate (43), the length direction of the first positioning convex strip (45) is consistent with the axial direction of the cylindrical pipe sleeve (27), a first positioning groove (46) for the first positioning convex strip (45) to insert is formed on the lower end of the slide block (23), a plurality of horizontal second positioning convex strips (47) are formed on the lower end of the connecting plate (7) and are arranged at equal intervals along the axial direction of the cylindrical pipe sleeve (27) The length direction of the second positioning convex strip (47) is perpendicular to the length direction of the first positioning convex strip (45), a second positioning groove (48) for the second positioning convex strip (47) to insert is formed in the upper end of the sliding block (23), and a second avoidance through groove (49) for avoiding a plurality of positioning bolts (39) is formed in the upper end of the auxiliary plate (43).
7. The quick unloading sling with the anti-drop structure according to claim 1, wherein two buffer rubber blocks (50) are fixedly arranged in the box body (20), the two buffer rubber blocks (50) are arranged at intervals along the vertical direction, the two buffer rubber blocks (50) are respectively arranged at two ends of the first linear sliding chute (24), and an arc-shaped groove (51) attached to the cylindrical pipe sleeve (27) is formed in one side of each buffer rubber block (50) close to the cylindrical pipe sleeve (27).
8. The quick unloading hanger with the anti-drop structure according to claim 2, wherein a plurality of anti-slip grooves (52) are formed on the inner side of the arc-shaped hanger part (4), the plurality of anti-slip grooves (52) are arranged close to the second safety plate (13), the length direction of each anti-slip groove (52) is consistent with the axial direction of the arc-shaped hanger part (4), and the plurality of anti-slip grooves (52) are arranged at equal intervals along the axial direction of the arc-shaped hanger part (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740583.6A CN114803834B (en) | 2022-06-28 | 2022-06-28 | Quick unloading lifting appliance with anti-disengaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740583.6A CN114803834B (en) | 2022-06-28 | 2022-06-28 | Quick unloading lifting appliance with anti-disengaging structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114803834A CN114803834A (en) | 2022-07-29 |
| CN114803834B true CN114803834B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210740583.6A Active CN114803834B (en) | 2022-06-28 | 2022-06-28 | Quick unloading lifting appliance with anti-disengaging structure |
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| Country | Link |
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| CN (1) | CN114803834B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116812741B (en) * | 2023-08-30 | 2023-11-28 | 福建省特种设备检验研究院泉州分院 | Intelligent unhooking prevention device for crane hook |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4007957A (en) * | 1975-07-21 | 1977-02-15 | Roden Mack L | Hook assembly |
| KR20180073235A (en) * | 2016-12-22 | 2018-07-02 | 한전케이피에스 주식회사 | Folding safety ring for crane hook |
| CN108483239A (en) * | 2018-05-08 | 2018-09-04 | 梁溪区旭中通用机械设计工作室 | A kind of crane arm hook |
| CN212832391U (en) * | 2020-06-03 | 2021-03-30 | 宿迁南钢金鑫轧钢有限公司 | Labor-saving unhooking prevention device |
| CN214456204U (en) * | 2021-01-07 | 2021-10-22 | 温岭市凯恒电动葫芦有限公司 | Hanging structure of electric hoist |
| CN112811305A (en) * | 2021-01-14 | 2021-05-18 | 胡颍颍 | Self-locking lifting hook for crane |
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2022
- 2022-06-28 CN CN202210740583.6A patent/CN114803834B/en active Active
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