CN114182966A

CN114182966A - Overhanging type unloading platform main beam

Info

Publication number: CN114182966A
Application number: CN202111340059.1A
Authority: CN
Inventors: 龚熙; 党明磊; 苗九成; 张仔亮
Original assignee: CCCC Third Highway Engineering Co Ltd
Current assignee: CCCC Third Highway Engineering Co Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-03-15
Anticipated expiration: 2041-11-12
Also published as: CN114182966B

Abstract

The invention discloses a main beam of an overhanging type discharging platform, which comprises a main beam body and an overhanging hanging plate connected with a crane, wherein the inner walls of the left side and the right side of the main beam body are rotatably connected with bunching pulleys through bearings. This device is through setting up first haulage rope, the second haulage rope, coupling mechanism and latch mechanism can install the girder body fast, the crane is earlier through to first haulage rope, second haulage rope and suspension link plate carry out vertical pulling to the girder body, after on the prefabricated anchor ring is inserted to girder body part, through slowly relaxing the vertical traction of crane, utilize latch mechanism and anchor ring mutual joint, utilize electric putter to let coupling mechanism on the first haulage rope be connected with another prefabricated anchor ring, thereby accomplish with the equal fixed effect of current device, compare with prior art, this device installation is all faster with the dismantlement speed in current device, the operation is also more simple and convenient, do not need a large amount of manual work to assist, can effectively shorten the time limit for a project of construction.

Description

Overhanging type unloading platform main beam

Technical Field

The invention relates to the field of overhanging type discharging platforms, in particular to a main beam of an overhanging type discharging platform.

Background

The overhanging type unloading platform is formed by frequently setting up various temporary operation platforms and operation frames on a construction site, is generally used for material turnover, and is divided into a movable unloading platform, a floor type unloading platform and an overhanging type unloading platform.

When the cantilever type unloading platform main beam in the prior art is installed, the main beam needs to be lifted by a crane firstly, then is inserted into an anchor ring prefabricated by a building body and is fixed through a sleeper, and a steel wire rope needs to be connected with the anchor ring in a diagonal pulling mode.

Therefore, the overhanging type unloading platform main beam solves the problems.

Disclosure of Invention

The invention aims to provide a cantilever type unloading platform main beam to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a formula of encorbelmenting platform girder of unloading, includes girder body and the hanging plate that is connected with the crane, girder body left and right sides inner wall rotates through the bearing and is connected with bunch pulley, bunch pulley arranges along girder body inner wall horizontal equidistance, bunch pulley outer wall swing joint has first haulage rope, hang the hanging plate front end left and right sides and the mutual fixed connection of first haulage rope, hang hanging plate rear end left and right sides and the mutual fixed connection of second haulage rope, girder body left and right sides top surface is connected with electric putter perpendicularly, electric putter top fixedly connected with and the supporting disk of the mutual sliding connection of first haulage rope, first haulage rope mid-mounting has coupling mechanism, two sets of clamping mechanism are all installed to the girder body left and right sides.

In a further embodiment, the main beam body is internally composed of two side beams and a middle beam, the side beams are fixedly connected to the left side and the right side of the middle beam, and the effect is as follows: this structure girder body comprises two curb girders and centre sill, and the user only need carry out quick assembly disassembly just can carry out the dismouting to whole platform of unloading to the girder body.

In a further embodiment, the inside spout of seting up in the curb girder top that includes of latch mechanism, the joint groove has been seted up at spout bottom middle part, spout inner wall sliding connection has the slider, the spring that slider outer wall one side fixedly connected with is connected with spout inner wall front end, the slider top is rotated through the bearing and is connected with the bracing piece, the curb girder top is rotated through the bearing and is connected with the pothook of the mutual block with prefabricated anchor ring, the standing groove with the mutual swing joint of bracing piece is seted up to pothook bottom surface one side, the bracing piece other end is connected with the standing groove inner wall rotation, and the effect is: this structure can be through the spring with the pothook jack-up fast, guarantees to laminate fast between pothook and the prefabricated anchor ring, and it is convenient to dismantle simultaneously, conveniently installs many times.

In a further embodiment, the slider is connected with the joint groove mutually in a clamping way, and the clamping hook, the supporting rod and the side beam form a triangular structure, and the effect is as follows: the stable triangular structure formed by the clamping hook, the supporting rod and the side beam can greatly improve the connectivity between the clamping hook and the prefabricated anchor ring.

In further embodiment, coupling mechanism is inside including the connecting block with first haulage rope middle part mutual fixed connection, the spread groove has been seted up to the connecting block left and right sides, the spread groove comprises triangular groove and transverse groove, elastic baffle is installed to transverse groove one end, and the effect is: this structure is when the crane loosens the longitudinal tension to the girder body gradually, utilizes the first haulage rope that loosens gradually, lets electric putter jack up first haulage rope fast, with the prefabricated anchor ring interconnect of last floor, can accomplish the quick of whole girder body and suspend in midair.

In a further embodiment, the connecting block is movably connected with the top of the outer wall of the supporting disc, and the effect is as follows: this structure is at the continuous in-process that prolongs of electric putter, can slowly elongate first haulage rope, can let coupling mechanism slowly rise again and carry out the high-speed joint with the crab-bolt.

In a further embodiment, one end of the first pulling rope is fixedly connected with one group of outer walls of the hooks, and one end of the second pulling rope is fixedly connected with one group of outer walls of the hooks, so that: when the crane gradually loosens the longitudinal traction to the main beam body, the structure can quickly connect the hook and the anchor ring, and the fixing is convenient, quick and rapid.

In further embodiment, first haulage rope and second haulage rope all are located bunch pulley bottom, first haulage rope and second haulage rope are connected in four corners of hanging the link plate, and the effect is: this structure plays spacing effect through bunch pulley to first haulage rope and second haulage rope, and first haulage rope is reverse simultaneously can play the effect of lifting again to the bunch pulley, and the first haulage rope and the second haulage rope that suspend in midair hanger plate corner connection can let the girder body be in stable condition suspending in midair the in-process.

In further embodiment, hang the board in hanging in midair and distribute in electric putter's right side, latch mechanism distributes in electric putter's left side, the direction is grabbed towards electric putter to the hook of pothook, and the effect is: pothook gripping direction lets normally outwards stimulate the girder body and can't normally be demolishd in this structure, only through the supplementary inward movement segment distance of crane, lets workman's slider break away from joint inslot portion just can normally accomplish the dismantlement, improves the holistic stability of device.

Compared with the prior art, the invention has the beneficial effects that:

this device is through setting up first haulage rope, the second haulage rope, coupling mechanism and latch mechanism can install the girder body fast, the crane is earlier through to first haulage rope, second haulage rope and suspension link plate carry out vertical pulling to the girder body, after on the prefabricated anchor ring is inserted to girder body part, through slowly relaxing the vertical traction of crane, utilize latch mechanism and anchor ring mutual joint, utilize electric putter to let coupling mechanism on the first haulage rope be connected with another prefabricated anchor ring, thereby accomplish with the equal fixed effect of current device, compare with prior art, this device installation is all faster with the dismantlement speed in current device, the operation is also more simple and convenient, do not need a large amount of manual work to assist, can effectively shorten the time limit for a project of construction.

Drawings

Fig. 1 is a main view structure schematic diagram of a cantilever type unloading platform main beam.

Fig. 2 is a partially enlarged structural schematic view of a place a in fig. 1 in a main beam of the overhanging type discharging platform.

Fig. 3 is a partially enlarged structural schematic view of a main beam of the cantilever type discharging platform at the position B in fig. 1.

Fig. 4 is a schematic structural view of the interior of a main beam of the overhanging type discharging platform.

Fig. 5 is a schematic structural view of the side surface of a connecting mechanism in a main beam of the overhanging type discharging platform.

In the figure: 1. a main beam body; 101. a side beam; 102. a center sill; 2. a wire harness pulley; 3. a first pull cord; 4. hanging a hanging plate; 5. a second pull cord; 6. an electric push rod; 601. a support disc; 7. a connecting mechanism; 701. connecting blocks; 702. connecting grooves; 7021. a triangular groove; 7022. a transverse slot; 703. an elastic baffle plate; 8. a clamping mechanism; 801. a chute; 802. a clamping groove; 803. a slider; 804. a spring; 805. a support bar; 806. a hook; 807. and (6) placing the groove.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, in the present invention, a main beam of an overhanging type discharging platform comprises a main beam body 1, side beams 101, a middle beam 102, a wire-bunching pulley 2, a first traction rope 3, a hanging plate 4, a second traction rope 5, an electric push rod 6, a support plate 601, a connecting mechanism 7, a connecting block 701, a connecting groove 702, a triangular groove 7021, a transverse groove 7022, an elastic baffle 703, a clamping mechanism 8, a sliding groove 801, a clamping groove 802, a sliding block 803, a spring 804, a support bar 805, a clamping hook 806 and a placing groove 807, wherein the inner walls of the left and right sides of the main beam body 1 are rotatably connected with the wire-bunching pulley 2 through bearings, the wire-bunching pulley 2 is transversely arranged at equal intervals along the inner wall of the main beam body 1, the outer wall of the wire-bunching pulley 2 is movably connected with the first traction rope 3, the left and right sides of the front end of a hanging plate 4 are fixedly connected with the first traction rope 3, the left and right sides of the rear end of the hanging plate 4 are fixedly connected with the second traction rope 5, the top surface of the left side and the right side of the main beam body 1 is vertically connected with an electric push rod 6, the top of the electric push rod 6 is fixedly connected with a supporting disc 601 which is connected with a first traction rope 3 in a sliding mode, the middle of the first traction rope 3 is provided with a connecting mechanism 7, and the left side and the right side of the main beam body 1 are provided with two sets of clamping mechanisms 8.

Example 1

Referring to fig. 1-5, in the embodiment of the invention, an overhanging type main girder of a discharging platform is provided, wherein an inside of a main girder body 1 is composed of two side beams 101 and a middle beam 102, the side beams 101 are fixedly connected to left and right sides of the middle beam 102, the two side beams 101 and the middle beam 102 constitute a main supporting structure of the discharging platform as a whole, when the whole discharging platform is installed, attention needs to be paid to the outward arrangement of the middle beam 102, and a protective structure is erected on the surfaces of the two side beams 101 and the middle beam 102.

First haulage rope 3 all is located 2 bottoms of bunch pulley with second haulage rope 5, first haulage rope 3 is connected in four corners of hanging link plate 4 with second haulage rope 5, first haulage rope 3 inserts girder body 1's inside through the hole on girder body 1 surface with second haulage rope 5, play spacing and standard effect to it by bunch pulley 2 at last, after connecting block 701 and the anchor ring interconnect on first haulage rope 3, first haulage rope 3 tightens gradually, first haulage rope 3 holds up bunch pulley 2 just so and has just also dragged girder body 1 whole completely, it is then directly connected with the crane to hang link plate 4, first haulage rope 3 is connected in the corner with second haulage rope 5, then can guarantee that girder body 1 is in the in-process whole in steady state that suspends in midair.

Example 2

Referring to fig. 1-3, the difference from embodiment 1 is: the inside of the clamping mechanism 8 comprises a sliding groove 801 arranged at the top of the side beam 101, the middle part of the bottom of the sliding groove 801 is provided with a clamping groove 802, the inner wall of the sliding groove 801 is connected with a sliding block 803 in a sliding way, one side of the outer wall of the sliding block 803 is fixedly connected with a spring 804 connected with the front end of the inner wall of the sliding groove 801, the top of the sliding block 803 is connected with a supporting rod 805 in a rotating way through a bearing, the top of the side beam 101 is connected with a clamping hook 806 which is mutually clamped with a prefabricated anchor ring through a bearing in a rotating way, one side of the bottom surface of the clamping hook 806 is provided with a placing groove 807 which is mutually movably connected with the supporting rod 805, the other end of the supporting rod 805 is mutually connected with the inner wall of the placing groove 807 in a rotating way, when the main beam body 1 is connected with a crane, firstly, the side beams 101 at the left side and the right side of the main beam body 1 are inserted into the prefabricated anchor ring of a building, the whole anchor ring is in an inverted U-shaped structure, when the clamping hook 806 is fixed with the prefabricated anchor ring, the sliding block 803, slider 803 can carry out lateral sliding in spout 801 inside, until inside pushing into joint groove 802 with slider 803, block slider 803 completely, thereby withstand pothook 806 completely through bracing piece 805, when the user need dismantle, need manually break away from slider 803 and joint groove 802 each other can, can let the continuous compression spring 804 of slider 803 through pushing down pothook 806 this moment, bracing piece 805 can also be accomodate to inside simultaneously standing groove 807 that can also be used for, let pothook 806 can press down darker, thereby conveniently let latch mechanism 8 break away from the inside of prefabricated anchor ring.

Slider 803 and the mutual block joint in joint groove 802 are connected, and pothook 806, bracing piece 805 and curb girder 101 constitute three horn-shaped structures, and slider 803 lets slider 803 remain stable through the back with the mutual joint in joint groove 802, utilizes bracing piece 805 to withstand pothook 806 completely to guarantee the stable effect that pothook 806 and prefabricated anchor ring are connected, can also improve the holistic security of device when promoting the convenience again.

First haulage rope 3 one end and one of them group pothook 806 outer wall fixed connection each other, second haulage rope 5 one end and one of them group pothook 806 outer wall fixed connection each other, first haulage rope 3 is connected with the bottom of one of them group pothook 806, second haulage rope 5 is then connected on another group pothook 806, when the crane loosens gradually the pulling vertical to main girder body 1, the traction force that pothook 806 received also can slowly reduce, finally under the promotion of slider 803, spring 804 and bracing piece 805, be connected with the anchor ring, form the effect of quick linkage.

Hang link plate 4 and distribute in electric putter 6's right side, clamping mechanism 8 distributes in electric putter 6's left side, the direction is grabbed towards electric putter 6 to the hook of pothook 806, pothook 806 catches on behind the crab-bolt, normally outside pulling can't dismantle girder body 1, when the user need dismantle, need utilize the crane to catch on hang link plate 4, let girder body 1 move a segment distance to the building inside, let pothook 806 and anchor ring directly can break away from each other, let slider 803 break away from inside joint groove 802 again, press down pothook 806 downwards, let electric putter 6 shorten gradually again, let connecting block 701 and anchor ring alternate segregation, the crane then upwards stimulates unnecessary first haulage rope 3 and second haulage rope 5 gradually, just accomplished whole dismantlements.

Example 3

Referring to fig. 2 and fig. 5, the difference from embodiment 1 is: the connecting mechanism 7 comprises a connecting block 701 fixedly connected with the middle part of the first hauling cable 3, connecting grooves 702 are arranged on the left side and the right side of the connecting block 701, each connecting groove 702 is composed of a triangular groove 7021 and a transverse groove 7022, an elastic baffle 703 is arranged at one end of each transverse groove 7022, when the connection between the clamping mechanisms 8 on the two side beams 101 and the anchor ring is completed, the electric push rod 6 can be opened to push the supporting plate 601 upwards, the crane needs to be matched to gradually loosen the tension on the whole main beam body 1, so that the first hauling cable 3 and one section of the second hauling cable 5 directly connected with the suspension hanging plate 4 can be gradually loosened, the electric push rod 6 is started to push the supporting plate 601 upwards again, the first hauling cable 3 is continuously pulled out until the position of the anchor ring prefabricated on the previous floor is gradually extended, the connecting mechanism 7 is connected with the anchor ring, and the prefabricated anchor ring corresponds to the elastic baffle 703, continue to upwards promote connecting block 701 through electric putter 6, prefabricated anchor ring can initiatively open inside elastic baffle 703 slides in connecting groove 702, the workman can assist the pulling first haulage rope 3 once at this in-process, make things convenient for coupling mechanism 7 to pair fast with prefabricated anchor ring, pair the completion and let electric putter 6 reverse shrinkage, prefabricated anchor ring just can block into the triangular groove 7021 department of deepest department like this, and there is certain angle of inclination between connecting block 701 and the first haulage rope 3, guarantee that prefabricated anchor ring can block always inside triangular groove 7021.

Connecting block 701 and the mutual swing joint in supporting disk 601 outer wall top, electric putter 6 upwards constantly jack-up first haulage rope 3's in-process again, connecting block 701 can slowly follow the top surface motion of bottom to supporting disk 601, connecting block 701 is also provided with a plurality ofly on first haulage rope 3 simultaneously, can the adaptation co-altitude not, after connecting block 701 finally moves electric putter 6's top, just can let coupling mechanism 7 and anchor ring interconnect, when connecting block 701 and anchor ring need alternate segregation, it upwards promotes first haulage rope 3 to need electric putter 6, let first haulage rope 3 and the inside alternate segregation of triangular groove 7021, from transverse groove 7022's terminal roll-off, the workman can be at this in-process through the supplementary connecting block 701 of pulling first haulage rope 3 and anchor ring alternate segregation, the anchor ring finally can initiatively promote elastic baffle 703 and connecting block separation.

The working principle of the invention is as follows:

when installing girder body 1, at first let crane lug connection hang plate 4, utilize the crane with girder body 1 transfer to suitable floor after, at first need insert the prefabricated anchor ring of building with girder body 1 left and right sides's curb girder 101 inside, the anchor ring is whole to be "U" dress structure of handstand, this process needs the workman to carry out the auxiliary operation, it is not too stable to insert completion back girder body 1, but there is the spacing of anchor ring, the crane can relax gradually to girder body 1 fore-and-aft pulling force, hang plate 4 descends gradually this moment, first haulage rope 3 and second haulage rope 5 also slowly relax, the traction force that pothook 806 received also can slowly reduce, finally under the promotion of slider 803, spring 804 and bracing piece 805, be connected with the anchor ring, the concrete process is: the spring 804 will push the sliding block 803 forward, the sliding block 803 will slide laterally in the sliding groove 801 until the sliding block 803 is pushed into the clamping groove 802, the sliding block 803 is completely clamped, so the clamping hook 806 is completely supported by the supporting rod 805, then the electric push rod 6 is started to push the supporting disc 601 upward, at this time, the crane needs to cooperate to gradually loosen the pulling force on the whole main beam body 1, so that the first traction rope 3 and the second traction rope 5 are gradually loosened at a certain section directly connected with the suspension plate 4, at this time, the electric push rod 6 is started to push the supporting disc 601 upward, the first traction rope 3 is continuously pulled out until the position of the anchor ring prefabricated at the previous floor is gradually extended, the connecting mechanism 7 and the anchor ring are connected, the prefabricated anchor ring corresponds to the elastic baffle 703, the connecting block 701 is continuously pushed upward by the electric push rod 6, the prefabricated anchor ring will actively open the elastic baffle 703 and slide into the connecting groove 702, the workman can be at this in-process supplementary pulling first haulage rope 3 once, makes things convenient for coupling mechanism 7 to pair fast with prefabricated anchor ring, pairs and accomplishes and lets 6 reverse shrinkages of electric putter, prefabricated anchor ring just can block into the triangular groove 7021 department of deepest like this to there is certain angle of inclination between connecting block 701 and the first haulage rope 3, guarantees that prefabricated anchor ring can block always inside triangular groove 7021, has just so accomplished 1 fixed course of whole girder body.

When the disassembly is needed, firstly, the connecting block 701 and the anchor ring are separated from each other, the electric push rod 6 is needed to push the first traction rope 3 upwards, the first traction rope 3 is separated from the inside of the triangular groove 7021, the first traction rope slides out from the tail end of the transverse groove 7022, a worker can assist the connecting block 701 and the anchor ring to be separated from each other by pulling the first traction rope 3 in the process, the anchor ring finally pushes the elastic baffle 703 to be separated from the connecting block 701 actively, finally, the hanging plate 4 needs to be hooked by a crane in the disassembly clamping mechanism 8, the main beam body 1 moves for a short distance towards the inside of the building, the clamping hook 806 and the anchor ring can be separated from each other directly, the sliding block 803 is separated from the clamping groove 802, the clamping hook 806 is pressed downwards, the electric push rod 6 is shortened gradually, the connecting block 701 and the anchor ring are separated from each other, the crane pulls the redundant first traction rope 3 and the redundant second traction rope 5 upwards gradually, the entire disassembly is complete.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a formula of encorbelmenting platform girder of unloading, its characterized in that: comprises a main beam body (1) and a hanging plate (4) connected with a crane, wherein the inner walls of the left side and the right side of the main beam body (1) are rotatably connected with a bunch pulley (2) through a bearing, the bunch pulley (2) is arranged along the inner wall of the main beam body (1) at a transverse equal distance, the outer wall of the bunch pulley (2) is movably connected with a first traction rope (3), the left side and the right side of the front end of the hanging plate (4) are fixedly connected with the first traction rope (3), the left side and the right side of the rear end of the hanging plate (4) are fixedly connected with a second traction rope (5), the top surfaces of the left side and the right side of the main beam body (1) are vertically connected with an electric push rod (6), the top of the electric push rod (6) is fixedly connected with a supporting disk (601) which is slidably connected with the first traction rope (3), and the middle part of the first traction rope (3) is provided with a connecting mechanism (7), two sets of latch mechanisms (8) are all installed to the girder body (1) left and right sides.

2. The overhanging type unloading platform main beam of claim 1, which is characterized in that: the main beam body (1) is internally composed of two side beams (101) and a middle beam (102), and the side beams (101) are fixedly connected to the left side and the right side of the middle beam (102).

3. The overhanging type unloading platform main beam of claim 2, which is characterized in that: clamping mechanism (8) inside is including offering in spout (801) at curb girder (101) top, joint groove (802) have been seted up at spout (801) bottom middle part, spout (801) inner wall sliding connection has slider (803), the spring (804) that slider (803) outer wall one side fixedly connected with is connected with spout (801) inner wall front end, slider (803) top is rotated through the bearing and is connected with bracing piece (805), curb girder (101) top is rotated through the bearing and is connected with pothook (806) with the mutual block of prefabricated anchor ring, pothook (806) bottom surface one side is seted up and is connected with bracing piece (805) looks swing joint's standing groove (807), the bracing piece (805) other end is connected with standing groove (807) inner wall interrotation.

4. The overhanging type unloading platform main beam of claim 3, which is characterized in that: the sliding block (803) is mutually clamped and connected with the clamping groove (802), and the clamping hook (806), the supporting rod (805) and the side beam (101) form a triangular structure.

5. The overhanging type unloading platform main beam of claim 1, which is characterized in that: the connecting mechanism (7) is internally provided with a connecting block (701) fixedly connected with the middle part of the first traction rope (3), the left side and the right side of the connecting block (701) are provided with connecting grooves (702), each connecting groove (702) is composed of a triangular groove (7021) and a transverse groove (7022), and one end of each transverse groove (7022) is provided with an elastic baffle (703).

6. The overhanging type platform girder of unloading of claim 5, wherein: the connecting block (701) is movably connected with the top of the outer wall of the supporting disc (601) mutually.

7. The overhanging type unloading platform main beam of claim 3, which is characterized in that: one end of the first traction rope (3) is fixedly connected with the outer wall of one group of clamping hooks (806), and one end of the second traction rope (5) is fixedly connected with the outer wall of one group of clamping hooks (806).

8. The overhanging type unloading platform main beam of claim 1, which is characterized in that: first haulage rope (3) and second haulage rope (5) all are located bunch pulley (2) bottom, first haulage rope (3) and second haulage rope (5) are connected in four corners of hanging link plate (4).

9. The overhanging type unloading platform main beam of claim 3, which is characterized in that: hang link plate (4) and distribute in electric putter (6)'s right side, latch mechanism (8) distribute in electric putter's (6) left side, the direction is grabbed towards electric putter (6) to the hook of pothook (806).