Anti-falling lifting turnover device

Abstract

The invention discloses an anti-falling lifting turnover device which comprises a portal frame, a lifting cross beam, a lifting driving mechanism, a first anti-falling mechanism, a second anti-falling mechanism and a third anti-falling mechanism, the lifting cross beam is provided with turnover discs, and each turnover disc is provided with a clamping and positioning assembly for jointly clamping a mixing pot; the lifting driving mechanism drives the lifting cross beam to do lifting motion; the first anti-falling mechanism is used for instantaneously reducing the impact speed when the lifting cross beam falls; the second anti-falling mechanism is used for reducing the speed of the falling lifting cross beam in a friction manner; the third anti-falling mechanism stops the falling lifting cross beam in a multi-stage clamping mode. And the third anti-falling mechanism stops the fallen lifting cross beam under the multi-deceleration action of the first anti-falling mechanism and the second anti-falling mechanism. The mixing pot can be automatically positioned through the clamping and positioning assembly, mechanical hoisting is achieved, manual participation is reduced, and equipment safety is ensured in a multi-stage protection mode.

Description

Technical Field

[0001] The invention relates to the technical field of transporting and cleaning a mixing pot and a hopper, and in particular to an anti-falling lifting and turning device. Background Art

[0002] When transferring materials in some large mixing pots or hoppers, it is necessary to lift the mixing pot or hopper and then flip it over to dump the materials. In the existing production, manual lifting and docking is often used, which is labor-intensive, takes a long time to locate and find the correct position, and puts people in a dangerous environment for a long time. In addition, the existing technology usually uses a lifting rope or chain to lift the mixing pot or hopper. Due to the large size and heavy weight of the mixing pot or hopper, if the lifting rope or chain breaks during the lifting or dumping process, it will cause the mixing pot or hopper to fall, the materials will leak out, and even cause casualties. The existing technology generally uses a block and a locking unit to achieve an anti-falling effect (such as application number 201821760611 .6) or the use of inclined wedges to prevent the lifting equipment from falling (such as the anti-falling elevator disclosed in the utility model patent CN96240537), but the concept of multiple protections is not considered. With the continuous improvement of production safety requirements, the safety level of equipment must also be continuously improved. The design of the traditional single anti-falling structure is difficult to meet the safety requirements of higher-level equipment. As the anti-falling mechanism has the risk of aging parts over time or the initial test accuracy is inaccurate, the ability of the anti-falling mechanism to withstand impact may be lower than the initial test value. Once the equipment cannot be prevented from falling, serious production accidents will occur. For this reason, it is necessary to design an anti-falling lifting device that can efficiently hoist and dock the mixing pot, and prevent the mixing pot from falling and improve the safety of the equipment through the cooperation of multiple anti-falling mechanisms.

[0003] In addition, most of the materials poured into the mixing pot cannot flow away by themselves, and need to be shoveled quickly at the pot mouth to ensure that as much material as possible is poured out and the amount of material poured is close to the designed amount. In addition, after the pouring is completed, the mixing pot needs to be cleaned in time for the next work. Cleaning the pot is very troublesome. If there are too many residual materials in the pot, they will form lumps and cling tightly to the pot wall, which increases the difficulty of cleaning and wastes materials, resulting in great losses. Summary of the invention

[0004] In order to solve the technical problems in the prior art that manual lifting and docking are required when transferring materials in a mixing pot, the labor intensity is high, and the safety level of the lifting equipment is low, the present invention provides an anti-falling lifting and flipping device to solve the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an anti-fall lifting and flipping device, comprising a gantry, a lifting beam, a lifting drive mechanism, a first anti-falling mechanism, a second anti-falling mechanism and a third anti-falling mechanism, wherein the gantry comprises a plurality of columns and a platform located on the top of the columns; two lifting beams are symmetrically arranged, each lifting beam is slidably connected to the column, and a flip plate is installed on the opposite surfaces of the two lifting beams, and each flip plate is installed with a clamping and positioning component for clamping a mixing pot together; the lifting drive mechanism is used to connect the gantry and the lifting beam and drive the lifting beam to perform lifting and lowering movements; the first anti-falling mechanism is used to instantly reduce the impact speed of the lifting beam when it falls; the second anti-falling mechanism uses friction to reduce the speed of the falling lifting beam; the third anti-falling mechanism uses a multi-stage clamping method to intercept the falling lifting beam; the third anti-falling mechanism realizes the interception of the falling lifting beam under the multiple deceleration effects of the first anti-falling mechanism and the second anti-falling mechanism.

[0006] In an optional embodiment of the present invention, the first anti-fall mechanism includes a rotating wheel installed on the platform and a metal pulling rope wrapped around the rotating wheel, one end of the metal pulling rope is connected to the rotating wheel, and the other end is connected to the lifting beam, and the rotating wheel is connected to the lifting drive mechanism so that the end of the metal pulling rope connected to the lifting beam can be lifted and lowered synchronously with the lifting drive mechanism.

[0007] In an optional embodiment of the present invention, the lifting drive mechanism includes a driving motor, a driving rod, a driven rod and a plurality of driven sprockets. The driving motor is fixed on the platform, and the driving motor is simultaneously connected to the driving rod and the rotating wheel. The two ends of the driving rod are connected to the driven rod through a transfer structure. A driven sprocket is provided on each driven rod and the lifting beam. The chain is meshed with the driven sprocket on the driven rod and the driven sprocket on the lifting beam in turn and circles around, and the two ends of the chain are fixed.

[0008] In an optional embodiment of the present invention, the second anti-fall mechanism includes a rocker arm, a locking wedge, a traction rope and a compression spring, the locking wedge is located in a movable box surrounded by a lifting beam and a column, the lifting beam has a locking inclined surface that is opposite to the inclined surface of the locking wedge, the middle part of the rocker arm is hinged to the lifting beam, one end of the rocker arm is connected to the lifting drive mechanism through a traction rope, and the other end is connected to the locking wedge through the traction rope, a compression spring is arranged between the locking wedge and the rocker arm, the compression spring is located in the movable box and is suitable for lifting the locking wedge, when the lifting beam falls, the locking wedge and the locking inclined surface produce relative movement, thereby being clamped between the locking inclined surface and the column.

[0009] In an optional embodiment of the present invention, the third anti-fall mechanism includes a safety rack plate, a pushing cylinder, a push rod, a return spring and a latch. The safety rack plate is vertically fixed on the column, the lowest position of the safety rack plate is lower than the starting position of the first anti-fall mechanism, the pushing cylinder is installed on the lifting beam, the latch is movably installed on the lifting beam, the output end of the pushing cylinder is connected to the push rod, the push rod is hinged to the latch, and the latch is connected to the push rod through a waist-shaped hole, the return spring is sleeved on the latch, when the pushing cylinder is in an extended state, the latch can be engaged with the safety rack plate, when the pushing cylinder is in a retracted state, the latch is against the surface of the safety rack plate under the action of the return spring, and the latch can move axially.

[0010] In an optional embodiment of the present invention, a plurality of protruding teeth are provided on the safety rack plate, the lower surface of the protruding teeth is an upwardly inclined slope, and the upper surface of one end of the latch pin facing the protruding teeth is chamfered.

[0011] In an optional embodiment of the present invention, the clamping positioning assembly includes a fixed plate, an upper positioning group installed on the top of the fixed plate, and a lower positioning group connected to the bottom of the fixed plate; the fixed plate is connected to the flip plate, the upper positioning group cooperates with the support ears on the upper part of the mixing pot for positioning, the lower positioning group cooperates with the bottom plate of the mixing pot for positioning, and the lower positioning group is connected to the fixed plate via a lifting cylinder.

[0012] In an optional embodiment of the present invention, the upper positioning group includes at least two positioning pins that cooperate with the positioning holes of the ear, an upper X-direction clamping piece that clamps the ear along the X-direction, a first lower positioning plate that supports the lower surface of the ear, and an upper limit positioning piece that can block above the ear; the lower positioning group includes a lower X-direction clamping piece that clamps the base plate along the X-direction, a second lower positioning plate that supports the lower surface of the base plate, and the X-direction is a direction in a horizontal plane that is perpendicular to the rotation center of the flip disk.

[0013] In an optional embodiment of the present invention, the upper X-direction clamping member and the lower X-direction clamping member are respectively X-direction clamping cylinders located on both sides of the support ear and the bottom plate along the X-direction.

[0014] In an optional embodiment of the present invention, the upper positioning group also includes a connecting block fixed to the fixed plate, the first lower positioning plate is located on the connecting block, the upper X-axis clamp is connected to the connecting block, the upper limit positioning member includes a Y-axis movable cylinder fixed to the connecting block and a movable block connected to the Y-axis movable cylinder, and the height of the movable block is higher than the upper surface of the support ear.

[0015] In an optional embodiment of the present invention, the mixing pot can enter and exit the gantry along the X direction, and a manipulator for transferring materials is installed on one side of the gantry in the X direction.

[0016] The beneficial effects of the present invention are: (1) The anti-fall lifting and flipping device of the present invention can lift and flip the mixing pot, and can automatically position the mixing pot by clamping the positioning component, thereby realizing mechanical lifting, reducing manual participation, and having a high degree of mechanization and high safety.

[0017] (2) The anti-fall lifting and flipping device described in the present invention is provided with three anti-fall mechanisms, and the three anti-fall mechanisms complement each other to ensure the safety of the equipment through a multi-level protection method.

[0018] (3) The second anti-falling mechanism in the present invention uses a rocker rod to connect the locking wedge with the lifting drive mechanism, so that the locking wedge can move in the movable box, thereby achieving an anti-falling effect without affecting the normal lifting of the lifting beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional diagram of a specific embodiment of the anti-falling lifting and flipping device of the present invention; Figure 2 yes Figure 1 The enlarged image at a in the middle; Figure 3 It is a front view of a specific embodiment of the anti-falling lifting and flipping device of the present invention; Figure 4 yes Figure 3 AA section view; Figure 5 yes Figure 4 Enlarged image at c in the middle; Figure 6 It is a side view of a specific embodiment of the anti-falling lifting and flipping device of the present invention; Figure 7 yes Figure 6 BB section view; Figure 8 yes Figure 7 The enlarged image at point b in the middle; Fig. 9 yes Figure 6 Enlarged image at point d in the middle; Fig.10 is a schematic diagram of the third anti-fall mechanism in the present invention; Fig.11 It is a schematic diagram of the first anti-fall mechanism in the present invention.

[0021] In the figure, 1, gantry, 101, column, 102, platform, 2, lifting beam, 201, locking inclined plane, 202, baffle, 3, flip plate, 4, lifting drive mechanism, 401, driving motor, 402, driving rod, 403, driven rod, 404, driven sprocket, 405, chain, 5, first anti-falling mechanism, 501, rotating wheel, 502, metal pulling rope, 6, second anti-falling mechanism, 601, swing rod, 602, locking wedge, 603, traction rope, 604, compression spring, 605, movable box, 606, rotating shaft, 607, rotating sprocket, 608, limiting screw, 609, friction plate, 610, limiting nut, 7, third Anti-fall mechanism, 701, safety rack plate, 7011, convex teeth, 702, push cylinder, 703, push rod, 704, reset spring, 705, latch, 7051, waist-shaped hole, 7052, shoulder, 8, clamping and positioning assembly, 801, fixing plate, 802, lifting cylinder, 803, positioning pin, 804, upper X-direction clamping piece, 805, first lower positioning plate, 806, lower X-direction clamping piece, 807, second lower positioning plate, 808, connecting block, 809, Y-direction movable cylinder, 810, movable block, 811, support plate, 9, mixing pot, 901, support ear, 9011, positioning hole, 902, bottom plate, 10, manipulator, 11, guide rail. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] like Figure 1-Figure 3 As shown, an anti-fall lifting and flipping device includes a gantry 1, a lifting beam 2, a lifting drive mechanism 4, a first anti-falling mechanism 5, a second anti-falling mechanism 6 and a third anti-falling mechanism 7. The gantry 1 is used as the frame of the whole device for installing and supporting other components. The gantry 1 includes a plurality of columns 101 and a platform 102 located on the top of the columns 101; two lifting beams 2 are symmetrically arranged, each lifting beam 2 is slidably connected to the column 101, and a flip plate 3 is installed on the opposite sides of the two lifting beams 2. Each flip plate 3 is installed with a clamping positioning assembly 8 for clamping a mixing pot 9 together. The flip plate 3 can rotate to drive the mixing pot 9 to flip, so as to facilitate pouring out the materials in the mixing pot 9. The lifting beam 2 slides up and down along the column 101, and the column 101 provides a guide for the lifting beam 2. The lifting drive mechanism 4 is used to connect the gantry 1 and the lifting beam 2 to drive the lifting beam 2 to move up and down.

[0024] The first anti-falling mechanism 5 is used to instantaneously reduce the impact speed of the lifting beam 2 when it falls; the second anti-falling mechanism 6 uses friction to slow down the falling lifting beam 2; the third anti-falling mechanism 7 uses a multi-stage clamping method to intercept the falling lifting beam 2; the third anti-falling mechanism 7 stops the falling lifting beam 2 under the multiple deceleration actions of the first anti-falling mechanism 5 and the second anti-falling mechanism 6.

[0025] Under normal circumstances, the first anti-fall mechanism 5, the second anti-fall mechanism 6 and the third anti-fall mechanism 7 can each withstand the impact of the lifting beam 2 falling. When the lifting beam 2 falls, the three anti-fall mechanisms work at the same time. Among them, the first anti-fall mechanism 5 works instantaneously, and the second anti-fall mechanism 6 and the third anti-fall mechanism 7 work continuously. When the load-bearing capacity of various anti-fall mechanisms decreases due to aging of components, the first anti-fall mechanism 5 fails first. At this time, the first anti-fall mechanism 5 reduces the impact speed of the lifting beam 2 by a certain amount, and the second anti-fall mechanism 6 and the third anti-fall mechanism 7 are continuously functioning structures, so the second anti-fall mechanism 6 and the third anti-fall mechanism 7 continue to operate. If the friction force of the second anti-fall mechanism 6 cannot prevent the lifting beam 2 from falling due to aging of components, the friction force of the second anti-fall mechanism 6 can continue to play a role of friction deceleration on the lifting beam 2. When the falling speed of the lifting beam 2 is reduced to a certain level, the third anti-fall mechanism 7 stops the falling lifting beam 2 by clamping, thereby ensuring the implementation of the anti-fall function, perfectly solving the problem of being unable to prevent falling caused by aging of components or inaccurate testing accuracy.

[0026] like Figure 7 and Fig.11 As shown, the first anti-fall mechanism 5 can be but is not limited to the following structure: The utility model comprises a rotating wheel 501 installed on the platform 102 and a metal pulling rope 502 wound on the rotating wheel 501, one end of the metal pulling rope 502 is connected to the rotating wheel 501, and the other end is connected to the lifting beam 2, and the rotating wheel 501 is connected to the lifting drive mechanism 4, so that the end of the metal pulling rope 502 connected to the lifting beam 2 is lifted and lowered synchronously with the lifting drive mechanism 4. When the mixing pot 9 is lifted and lowered, the metal pulling rope 502 wound on the rotating wheel 501 is lifted and lowered synchronously, but the metal pulling rope 502 is not subjected to force under normal circumstances. If the component lifting the lifting beam 2 breaks and fails, due to the limited length of the metal pulling rope 502, when the lifting beam 2 falls to the length limit of the metal pulling rope 502, the metal pulling rope 502 will be immediately straightened and stressed, and then play a role in preventing falling. The metal pulling rope 502 can be directly connected to the rotating wheel 501 at its end, and the middle part can be scattered. At this time, the rotating wheel 501 does not need to rotate, but the scattered metal pulling rope 502 is easy to be entangled with other parts. Therefore, the present invention preferably winds the metal pulling rope 502 on the rotating wheel 501, and the rotating wheel 501 is driven to rotate by the lifting drive mechanism 4, so that the metal pulling rope 502 can be rolled up or released.

[0027] The lifting drive mechanism 4 can be but is not limited to the following structure: like Figure 1 and Figure 7 As shown, the lifting drive mechanism 4 includes a driving motor 401, a driving rod 402, a driven rod 403 and a plurality of driven sprockets 404. The driving motor 401 is fixed on the platform 102. The driving motor 401 is simultaneously connected to the driving rod 402 and the rotating wheel 501. Both ends of the driving rod 402 are connected to the driven rod 403 through a transfer structure. A driven sprocket 404 is provided on each driven rod 403 and the lifting beam 2. The chain 405 is meshed with the driven sprocket 404 on the driven rod 403 and the driven sprocket 404 on the lifting beam 2 in sequence and circles around. Both ends of the chain 405 are fixedly provided.

[0028] The end of the chain 405 is connected to the platform 102, the driving rod 402 and the central axis of the rotating wheel 501 are arranged in parallel, the rotating wheel 501 can be connected to the driving rod 402 by means of a gear set, the driven rod 403 is arranged vertically to the driving rod 402, each lifting beam 2 corresponds to a driven rod 403, when the driven rod 403 rotates, the driven sprocket 404 installed thereon will rotate together, thereby driving the chain 405 to transmit, when the mixing pot 9 is lifted upward, the chain 405 gathers at one end at the fixed position of the chain 405 and the platform 102, and when the lifting beam 2 moves downward, the chain 405 gradually unfolds.

[0029] The second anti-fall mechanism 6 can be but is not limited to the following structure: The second anti-fall mechanism 6 includes a rocker arm 601, a locking wedge 602, a traction rope 603 and a compression spring 604. The locking wedge 602 is located in a movable box 605 surrounded by the lifting beam 2 and the column 101. The lifting beam 2 has a locking inclined surface 201 that is opposite to the inclined surface of the locking wedge 602. The middle part of the rocker arm 601 is hinged to the lifting beam 2. One end of the rocker arm 601 is connected to the lifting drive mechanism 4 through the traction rope 603, and the other end is connected to the locking wedge 602 through the traction rope 603. A compression spring 604 is arranged between the locking wedge 602 and the rocker arm 601. The compression spring 604 is located in the movable box 605 and is suitable for lifting the locking wedge 602. When the lifting beam 2 falls, the locking wedge 602 and the locking inclined surface 201 produce relative movement, thereby being clamped between the locking inclined surface 201 and the column 101.

[0030] like Figure 8 and Fig. 9 As shown, the rotating shaft 606 of the swing arm 601 is installed on the lifting beam 2 through a bearing. The swing arm 601 is connected to the traction rope 603 on one side of the platform 102 and is first connected to the limit screw 608. A rotating sprocket 607 is installed on the top of the limit screw 608. The rotating sprocket 607 is connected to the driving motor 401 through a chain 405. A limit nut 610 is threadedly connected to the limit screw 608. The limit nut 610 is located at the bottom of the lifting beam 2 and is used to limit the maximum height to which the limit screw 608 is pulled up.

[0031] like Figure 6 and Figure 7 As shown, two locking wedges 602 are symmetrically arranged on the same side of the lifting beam 2. The two locking wedges 602 are located on both sides of the same column 101 and are controlled by the same swing rod 601, that is, one lifting beam 2 is equipped with four locking wedges 602. The side of the locking wedge 602 facing the lifting beam 2 is an inclined surface, and gradually approaches the lifting beam 2 from top to bottom. The compression spring 604 and the swing rod 601 are located below the locking wedge 602, and the axial direction of the compression spring 604 and the direction of the up and down movement of the locking wedge 602.

[0032] Under normal conditions, the driving motor 401 pulls up one end of the rocker arm 601 by rotating the sprocket 607, causing the other end of the rocker arm 601 to move downward, thereby pulling the locking wedge 602 downward. At this time, the compression spring 604 is in a compressed state, and the locking wedge 602 is separated from the lifting beam 2, so that the lifting beam 2 can move smoothly.

[0033] When the chain 405 in the lifting drive mechanism 4 breaks, the chain 405 connecting the rotating sprocket 607 and the driving motor 401 will also break, and the swing rod 601 will no longer squeeze the compression spring 604. When the compression spring 604 is reset, the locking bevel moves upward, and the locking bevel 201 of the lifting beam 2 moves downward. Since the two move vertically, the bevels of the two can approach each other until they are in contact and pressed, thereby achieving a tight hold on the column 101. A friction plate 609 can be installed on the side of the locking bevel wedge 602 facing the column 101 to increase friction.

[0034] The locking wedge 602 and the lifting beam 2 have the same taper. Assuming that the taper of the locking slope 201 is 1:10, when the lifting beam 2 falls, the gravity of the lifting beam 2 exerts a clamping force of 10 times its own weight on the column 101 through the locking slope 201. A friction plate 609 is installed on the contact surface between the locking wedge 602 and the column 101. The friction coefficient can reach 0.45, and the clamping force can reach 4.5 times the weight of the lifting beam 2, which is safe and reliable.

[0035] The third anti-fall mechanism 7 can be but is not limited to the following structure: The third anti-falling mechanism 7 includes a safety rack plate 701, a push cylinder 702, a push rod 703, a reset spring 704 and a latch 705. The safety rack plate 701 is vertically fixed on the column 101. The lowest position of the safety rack plate 701 is lower than the starting position of the first anti-falling mechanism 5. The push cylinder 702 is installed on the lifting beam 2. The latch 705 is movably installed on the lifting beam 2. The output end of the push cylinder 702 is connected to the push rod 703. The rod 703 is hinged to the latch 705, and the latch 705 is connected to the push rod 703 through a waist-shaped hole 7051, and a reset spring 704 is sleeved on the latch 705. When the push cylinder 702 is in an extended state, the latch 705 can be engaged with the safety rack plate 701. When the push cylinder 702 is in a retracted state, the latch 705 is abutted against the surface of the safety rack plate 701 under the action of the reset spring 704, and the latch 705 can move axially.

[0036] like Fig.10 As shown, the push cylinder 702 is located above the latch 705, the push rod 703 is bent in an L shape, one end of the push rod 703 is connected to the push cylinder 702, and the other end of the push rod 703 is connected to the waist-shaped hole 7051, two baffles 202 are arranged on the lifting beam 2, the latch 705 passes through the two baffles 202, and a shoulder 7052 is arranged in the middle of the latch 705, the shoulder 7052 is located between the two baffles, and the baffle 202 located between the shoulder 7052 and the safety rack plate 701 is used to limit the shoulder 7052, and control the minimum distance between the latch 705 and the safety rack plate 701, and the reset spring 704 is clamped between the shoulder 7052 and the other baffle 202.

[0037] Preferably, a plurality of protruding teeth 7011 are provided on the safety rack plate 701 , the lower surface of the protruding teeth 7011 is an upwardly inclined slope, and the upper surface of one end of the latch 705 facing the protruding teeth 7011 is chamfered.

[0038] During the rising process of the lifting beam 2, the chamfer at the front of the latch 705 contacts the inclined surface of the convex tooth 7011 of the insurance rack plate 701, generating a backward force, which causes the latch 705 to retreat and the reset spring 704 to be compressed. The waist-shaped hole at the rear end of the latch 705 is designed to allow space for it to retreat. In this way, the latch 705 will only retreat once each time it passes through a convex tooth 7011 during the rising process, and will be in an extended state (the reset spring 704 is extended) in the gap between the convex teeth 7011 and the convex teeth 7011, thus ensuring the safety during the rising process and ensuring the smooth rising of the lifting beam 2. During the rising process of the lifting beam 2, the safety self-locking property of the latch 705 is completely guaranteed by the mechanical part of the equipment, and has nothing to do with gas and electricity. Even if there is a power outage or gas outage, there will be no safety problems.

[0039] During the descent of the lifting beam 2, the push cylinder 702 extends and compresses the return spring 704, so that the latch 705 retracts, which facilitates the descent of the lifting beam 2. When an accident occurs (such as the chain 405 breaks), the detection switch on the lifting beam 2 or the encoder on the drive motor 401 immediately sends a signal, and the push cylinder 702 releases the return spring 704, thereby ensuring that the lifting beam 2 is locked at any time. When the power fails, the pneumatic solenoid valve connected to the push cylinder 702 loses power, and the push cylinder 702 will automatically release the return spring 704, thereby ensuring that the lifting beam 2 is locked at any time.

[0040] During the flipping process, the flipping operation can be performed only after the latch 705 is inserted into the gap between the protruding teeth 7011 and is in place through electrical detection, so it is absolutely safe.

[0041] The safety rack plate 701 is welded on the column 101 and has sufficient strength to withstand the impact force generated when the lifting beam 2 falls. The safety rack plate 701 has an upwardly inclined convex tooth 7011 every 150 mm, and the inclination angle is preferably 60° to facilitate the retraction of the pin 705 when it rises.

[0042] The lowest position of the safety rack plate 701 is lower than the starting position of the first anti-falling mechanism 5, that is, lower than the height of the lifting beam 2 when the metal pulling rope 502 breaks. When the metal pulling rope 502 breaks, the safety rack plate 701 can continue to work.

[0043] The clamping and positioning assembly 8 may, but is not limited to, adopt the following structure: like Figure 2 , Figure 3 and Figure 7 As shown, the clamping and positioning assembly 8 includes a fixed plate 801, an upper positioning group installed on the top of the fixed plate 801, and a lower positioning group connected to the bottom of the fixed plate 801; the fixed plate 801 is connected to the overturning plate 3, the upper positioning group cooperates with the support ear 901 on the upper part of the mixing pot 9 for positioning, the lower positioning group cooperates with the bottom plate 902 of the mixing pot 9 for positioning, and the lower positioning group is connected to the fixed plate 801 through a lifting cylinder 802. The clamping and positioning assembly 8 positions and clamps the upper and lower parts of the mixing pot 9 respectively through the upper positioning group and the lower positioning group to prevent the mixing pot 9 from loosening during the overturning process. The lifting cylinder 802 is used to adjust the distance between the upper positioning group and the lower positioning group so that the upper and lower positioning groups are in a reasonable position. The upper positioning group and the lower positioning group not only have a positioning function, but also a clamping function.

[0044] The upper positioning group includes at least two positioning pins 803 that cooperate with the positioning hole 9011 of the ear 901, an upper X-direction clamping piece 804 that clamps the ear 901 along the X-direction, a first lower positioning plate 805 that supports the lower surface of the ear 901, and an upper limit positioning piece that can block above the ear 901; the lower positioning group includes a lower X-direction clamping piece 806 that clamps the base plate 902 along the X-direction, and a second lower positioning plate 807 that supports the lower surface of the base plate 902. The X-direction is a direction in a horizontal plane that is perpendicular to the rotation center of the flip disk 3.

[0045] After the mixing pot 9 is hoisted between the clamping and positioning components 8, the positioning hole 9011 is placed directly opposite the positioning pin 803 to lower the mixing pot 9, so that the mixing pot 9 is placed on the first lower positioning plate 805 or the second lower positioning plate 807. By adjusting the lifting cylinder 802, the distance between the first lower positioning plate 805 and the second lower positioning plate 807 is adjusted, so that the ear 901 is placed on the first lower positioning plate 805 and the bottom plate 902 is placed on the second lower positioning plate 807. Then, the upper X-direction clamp 804 and the lower X-direction clamp 806 are used to clamp them respectively. The clamping effect can be achieved through these structures. The upper limit member is used to prevent the mixing pot 9 from sliding out from the top when it is turned over. The upper limit member does not need to contact the ear 901, but only needs to be located above the ear 901 to play a certain preventive role.

[0046] like Figure 3-Figure 5 As shown, two clamping and positioning assemblies 8 are symmetrically arranged, respectively located on the left and right sides of the mixing pot 9, each clamping and positioning assembly 8 is provided with two positioning pins 803, and the four positioning pins 803 in the two clamping and positioning assemblies 8 play the role of surface positioning and angle positioning, and the upper X-direction clamping piece 804 in each clamping and positioning assembly 8 is used for X-direction clamping at the ear 901, and the lower X-direction clamping piece 806 is used for X-direction clamping at the bottom plate 902. The mixing roller can be completely positioned by the positioning pins 803 and the two lower positioning plates, and the upper X-direction clamping piece 804 and the lower X-direction clamping piece 806 are used for clamping and fixing.

[0047] Preferably, the upper X-direction clamping member 804 and the lower X-direction clamping member 806 are X-direction clamping cylinders located on both sides of the support ear 901 and the bottom plate 902 along the X-direction. Figure 5 As shown, both sides of the support ear 901 in the X direction and both sides of the bottom plate 902 in the X direction are in contact with the oil X-direction clamping cylinder.

[0048] Regarding the structure of the upper limit positioning member, the upper positioning group further includes a connecting block 808 fixed to the fixed plate 801, the first lower positioning plate 805 is located on the connecting block 808, the upper X-direction clamping member 804 is connected to the connecting block 808, and the upper limit positioning member includes a Y-direction movable cylinder 809 fixed to the connecting block 808 and a movable block 810 connected to the Y-direction movable cylinder 809, and the height of the movable block 810 is higher than the upper surface of the lug 901. Figure 5 As shown, the connection block 808 has a support plate 811 extending to the X-direction side of the support ear 901, the X-direction clamping cylinder is fixed on the support plate 811, and the piston rod of the X-direction clamping cylinder is against the end surface of the support ear 901. The movable block 810 can be separated from the connection block 808, or pass through the inside of the connection block 808, and the movable block 810 is driven to reciprocate by the Y-direction movable cylinder 809, so that the movable block 810 can move to the top of the support ear 901 to prevent the mixing pot 9 from sliding out when it is turned over. When the mixing pot 9 is taken out or placed, the movable block 810 moves in the opposite direction and withdraws to make way for the support ear 901.

[0049] In order to facilitate the lifting of the mixing pot 9, the gantry 1 adopts a door-type structure, and the mixing pot 9 can enter and exit the gantry 1 along the X direction. In addition, when the mixing pot 9 is stored with slurry, it is impossible to pour the slurry out completely by pouring it directly. For this reason, the present invention preferably installs a manipulator 10 for material transfer on one side of the gantry 1 in the X direction, such as Figure 6 As shown, the manipulator 10 can rotate 360° at will, and a guide rail 11 extending in the X direction can be installed on the platform 102 of the gantry 1, so that the manipulator 10 moves along the guide rail 11, and the manipulator 10 is controlled to approach or move away from the mixing pot 9. In an optional embodiment of the present invention, the manipulator 10 is an explosion-proof three-axis robot equipped with a scraper. When turning the pot and pouring the materials, the manipulator 10 uses a fixed program (fixed program can reduce the error rate and reduce the occurrence of accidents) to run once, and controls the manipulator 10 to make a fixed artificial scraping action to ensure that the pot is clean after pouring the materials.

[0050] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "vertical", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0052] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0053] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A falling-prevention lifting and flipping device, characterized in that: include: A gantry, the gantry comprising a plurality of columns and a platform located on top of the columns; A lifting beam, wherein two lifting beams are symmetrically arranged, each lifting beam is slidably connected to the column, and a turning plate is installed on the opposite sides of the two lifting beams, and each turning plate is installed with a clamping and positioning component for clamping the mixing pot together; The lifting drive mechanism is used to connect the gantry and the lifting beam and drive the lifting beam to move up and down; The first anti-fall mechanism is used to instantly reduce the impact speed of the lifting beam when it falls; The second anti-fall mechanism uses friction to slow down the falling lifting beam; The third anti-falling mechanism adopts a multi-stage clamping method to stop the falling lifting beam; the third anti-falling mechanism stops the falling lifting beam under the multiple deceleration effects of the first anti-falling mechanism and the second anti-falling mechanism.

2. The anti-falling lifting and flipping device according to claim 1 is characterized in that: The first anti-fall mechanism includes a rotating wheel installed on the platform and a metal pulling rope wrapped around the rotating wheel, one end of the metal pulling rope is connected to the rotating wheel, and the other end is connected to the lifting beam. The rotating wheel is connected to the lifting drive mechanism so that the end of the metal pulling rope connected to the lifting beam can be lifted and lowered synchronously with the lifting drive mechanism.

3. The anti-falling lifting and flipping device according to claim 2 is characterized in that: The lifting drive mechanism includes a driving motor, a driving rod, a driven rod and a plurality of driven sprockets. The driving motor is fixed on the platform. The driving motor is connected to the driving rod and the rotating wheel at the same time. The two ends of the driving rod are connected to the driven rod through a transfer structure. A driven sprocket is arranged on each driven rod and the lifting beam. The chain is meshed with the driven sprocket on the driven rod and the driven sprocket on the lifting beam in sequence and circles around. The two ends of the chain are fixed.

4. The anti-falling lifting and flipping device according to claim 1 is characterized in that: The second anti-fall mechanism includes a rocker arm, a locking wedge, a traction rope and a compression spring. The locking wedge is located in a movable box surrounded by a lifting beam and a column. The lifting beam has a locking inclined surface that is opposite to the inclined surface of the locking wedge. The middle part of the rocker arm is hinged to the lifting beam. One end of the rocker arm is connected to the lifting drive mechanism through a traction rope, and the other end is connected to the locking wedge through the traction rope. A compression spring is arranged between the locking wedge and the rocker arm. The compression spring is located in the movable box and is suitable for lifting the locking wedge. When the lifting beam falls, the locking wedge and the locking inclined surface produce relative movement, thereby being clamped between the locking inclined surface and the column.

5. The anti-falling lifting and turning device according to claim 1 is characterized in that: The third anti-fall mechanism includes a safety rack plate, a pushing cylinder, a push rod, a return spring and a latch. The safety rack plate is vertically fixed on the column, and the lowest position of the safety rack plate is lower than the starting position of the first anti-fall mechanism. The pushing cylinder is installed on the lifting beam, and the latch is movably installed on the lifting beam. The output end of the pushing cylinder is connected to the push rod, and the push rod is hinged with the latch, and the latch is connected to the push rod through a waist-shaped hole. The return spring is sleeved on the latch. When the pushing cylinder is in an extended state, the latch can be engaged with the safety rack plate. When the pushing cylinder is in a retracted state, the latch is against the surface of the safety rack plate under the action of the return spring, and the latch can move axially.

6. The anti-falling lifting and turning device according to claim 1, characterized in that: The clamping and positioning assembly includes a fixed plate, an upper positioning group installed on the top of the fixed plate, and a lower positioning group connected to the bottom of the fixed plate; the fixed plate is connected to the turning plate, the upper positioning group cooperates with the support ears on the upper part of the mixing pot for positioning, the lower positioning group cooperates with the bottom plate of the mixing pot for positioning, and the lower positioning group is connected to the fixed plate through a lifting cylinder.

7. The anti-falling lifting and turning device according to claim 6, characterized in that: The upper positioning group includes at least two positioning pins that cooperate with the positioning holes of the ear, an upper X-direction clamping piece that clamps the ear along the X-direction, a first lower positioning plate that supports the lower surface of the ear, and an upper limit positioning piece that can block above the ear; the lower positioning group includes a lower X-direction clamping piece that clamps the base plate along the X-direction, a second lower positioning plate that supports the lower surface of the base plate, and the X-direction is a direction in a horizontal plane that is perpendicular to the rotation center of the flip disk.

8. The anti-falling lifting and turning device according to claim 7 is characterized in that: The upper X-direction clamping member and the lower X-direction clamping member are respectively X-direction clamping cylinders located on both sides of the support ear and the bottom plate along the X-direction.

9. The anti-falling lifting and turning device according to claim 7, characterized in that: The upper positioning group also includes a connecting block fixed to the fixed plate, the first lower positioning plate is located on the connecting block, the upper X-axis clamp is connected to the connecting block, the upper limit positioning member includes a Y-axis movable cylinder fixed to the connecting block and a movable block connected to the Y-axis movable cylinder, and the height of the movable block is higher than the upper surface of the support ear.

10. The anti-falling lifting and turning device according to claim 5, characterized in that: The safety rack plate is provided with a plurality of protruding teeth, the lower surface of the protruding teeth is an inclined surface inclined upward, and the upper surface of one end of the latch pin facing the protruding teeth is provided with a chamfer.

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