CN115838116A - Material stacking crown block clamp - Google Patents

Abstract

The invention relates to the related technical field of crown block fixtures, in particular to a material stacking crown block fixture. A material stacking crown block clamp comprises a lifting frame, a clamping mechanism and a buffering mechanism. The crane can move up and down and can be arranged in a sliding manner. The buffer mechanism comprises an induction plate, a sliding frame, two friction wheels and two extrusion plates. The tablet only can reciprocate to be installed in the crane lower extreme, and the carriage is along horizontal direction slidable mounting in tablet, and both ends all link to each other through a plurality of first elastic component about carriage and tablet, and two friction pulleys rotationally install respectively in the crane lower extreme. According to the material stacking crown block clamp, the sliding frame, the friction rod, the friction wheel and the friction plate are arranged, so that the inertia of clamped materials is released when the device is started and stopped, the inertia is converted into the power for moving liquid in the two counterweight cavities, and the loss of a hoisting mechanism caused by the inertia of the materials is avoided when the device is started and stopped.

Description

Material stacking crown block clamp

Technical Field

The invention relates to the related technical field of crown block fixtures, in particular to a material stacking crown block fixture.

Background

The overhead traveling crane, also called a crane, is a hoisting device which spans over a factory building and can move, and the stacking overhead traveling crane is a crane for stacking products (or raw materials), and mainly comprises a bridge, a hoisting mechanism and a clamp.

When the overhead traveling crane is used, the clamp is driven to move up and down by the hoisting mechanism to grab and clamp, so that the materials are hoisted, and then the bridge of the overhead traveling crane is driven to move by the horizontal movement of the track at the top of the workshop, so that the materials are transferred. The existing stacking crown block drives the clamp to clamp the material by the hoisting mechanism, the clamp moves synchronously along with the movement of the crown block in the process of transferring the material, but when the crown block is started or braked, the gravity of the material generates large inertia lag, so that the hoisting mechanism is loaded, the loss of the hoisting mechanism is caused, and the service life is shortened.

Disclosure of Invention

The invention provides a material stacking crown block clamp, which aims to solve the problems that when an existing clamp is started or braked by a crown block, the gravity of materials generates large inertia lag, a hoisting mechanism is loaded, the hoisting mechanism is lost, and the service life is shortened.

The material stacking crown block fixture adopts the following technical scheme: a material stacking crown block clamp comprises a lifting frame, a clamping mechanism and a buffer mechanism; the lifting frame can move up and down and can be arranged in a sliding manner; the buffer mechanism comprises an induction plate, a sliding frame, two friction wheels and two extrusion plates; the induction plate is only arranged at the lower end of the lifting frame in a vertically movable manner, the sliding frame is arranged on the induction plate in a sliding manner along the horizontal direction, the sliding frame is connected with the left end and the right end of the induction plate through a plurality of first elastic pieces, the first elastic pieces are arranged along the horizontal direction, the two friction wheels are respectively and rotatably arranged at the lower end of the lifting frame, a friction rod is arranged at the upper end of the sliding frame and is arranged between the two friction wheels, and the friction rod is always in contact with the two friction wheels so as to enable the two friction wheels to rotate through friction transmission when the friction rod moves; two balance weight cavities are defined in the lifting frame, the two balance weight cavities are respectively arranged at two ends of the lifting frame and are communicated, liquid is filled in the two balance weight cavities, the two extrusion plates are respectively installed in the two balance weight cavities in a sliding mode, friction plates are arranged on the two extrusion plates and are arranged face to face, one ends, close to each other, of the two friction plates are fixedly connected, one ends, close to each other, of the two friction plates are arranged between the two friction wheels and are always in contact with the friction wheels, so that after the friction wheels rotate, the two friction plates can be driven to move through friction transmission, and the extrusion plates can move to extrude the liquid in the balance weight cavities; the clamping mechanism is arranged on the sliding frame and can grab and clamp the material.

Furthermore, the lower end of the lifting frame is provided with two inclined holes, and the upper ends of the two friction wheels are respectively and rotatably arranged in the two inclined holes; the friction wheel comprises a cylindrical wheel and a conical wheel, the cylindrical wheel is arranged at the upper end of the conical wheel, the upper end of the conical wheel is larger than the lower end of the conical wheel, the cylindrical wheel and the conical wheel are of an integrally formed structure, the cylindrical wheel is always in contact with the friction plate, and the conical wheel is always in contact with the friction rod.

The device further comprises a plurality of adjusting mechanisms, wherein each adjusting mechanism comprises a limiting plate and a plurality of telescopic plates; the limiting plate is arranged at the lower end of the lifting frame along the vertical direction, the limiting plate is provided with a plurality of limiting cavities, the limiting cavities are arranged along the vertical direction, a bulge is arranged in each limiting cavity, each bulge is wedge-shaped, and the heights of the plurality of bulges are gradually reduced from two ends to the middle; each expansion plate is arranged corresponding to one limiting cavity, one end of each expansion plate is initially attached to one corresponding limiting cavity, and each expansion plate is slidably mounted on the induction plate; every expansion plate other end all is provided with the baffle, and every baffle of initial sets up between a gap of first spring, nevertheless does not coincide with the spring, and the expansion plate is inside to set up to repellent's magnetic structure with the tablet inside, makes the expansion plate have the trend that removes to limiting plate one end all the time to can not remove between initial condition expansion plate can be in first spring and spacing chamber.

Furthermore, a plurality of clamping grooves are formed in the induction plate, at least one limiting block is arranged on each expansion plate, the limiting blocks are slidably mounted in the clamping grooves, and the limiting blocks and the clamping grooves are internally provided with repellent magnetic structures.

Furthermore, the clamping mechanism comprises a hydraulic cylinder, a connecting frame, two hinged rods and two clamping plates; the pneumatic cylinder is installed in the carriage, and the link is installed in the pneumatic cylinder lower extreme, and the link is configured into and only can reciprocate, and the pneumatic cylinder is used for driving the link and reciprocates, and two hinge bar one end rotationally installs respectively in the link lower extreme, and two splint are installed respectively in two hinge bar other ends, and two splint slidable mounting in the carriage, two hinge bar slope settings.

Furthermore, the connecting frame comprises a connecting rod and a cross, the connecting rod is connected with the hydraulic cylinder and the cross, the connecting rod and the cross are of an integrally formed structure, a first vertical groove arranged in the vertical direction is formed in the sliding frame, the transverse end of the cross is slidably mounted in the first vertical groove, so that the connecting frame can only move up and down, two hinge columns are arranged at the longitudinal end of the cross, and each hinge column is hinged with one end of one hinge rod; the sliding frame is internally provided with a sliding chute which is arranged along the horizontal direction, and the clamping plate is slidably arranged in the sliding chute.

Furthermore, a plurality of telescopic pipes are arranged at the upper end of the induction plate, the telescopic pipes are arranged along the vertical direction, a plurality of hollow pipes are arranged at the lower end of the lifting frame, each hollow pipe corresponds to one telescopic pipe, and each hollow pipe is connected with one telescopic pipe through a second elastic piece, so that the induction plate can only move up and down relative to the lifting frame.

The invention has the beneficial effects that:

1. according to the material stacking crown block clamp, the sliding frame, the friction rod, the friction wheels and the friction plates are arranged, when the device is started and stopped, due to the gravity inertia effect of materials, the sliding frame and the clamping mechanism generate movement lag, the first spring is enabled to generate elastic deformation, the sliding frame moves relative to the induction plate, friction transmission is further generated between the friction rod and the friction wheels, the two friction wheels are enabled to rotate, after the two friction wheels rotate, the two friction wheels simultaneously generate friction transmission with the two friction plates, the two friction plates move in the same direction, the friction plates move, the extrusion plates are enabled to extrude liquid in the counterweight cavities, inertia of the clamped materials is released and converted into power for moving the liquid in the two counterweight cavities, and loss of the lifting mechanism caused by material inertia when the device is started and stopped is avoided.

2. Because the bigger the material gravity is, the bigger the inertia is, the conical wheel is matched with the cylindrical wheel, after the material is clamped, the gravity of the material enables the sensing plate to descend, the sliding frame descends due to the descending of the sensing plate, the friction rod at the upper end of the sliding frame descends due to the descending of the sliding frame, the transmission ratio between the friction rod and the friction wheel is changed, and then the moving amount of the friction plate can be adjusted adaptively according to the gravity of the material. The friction plate moves to enable the extrusion plate to extrude the liquid on one side in the counterweight cavity, so that the liquid on the other side is increased, inertia during starting of the material is released and converted into power for moving the liquid in the counterweight cavity, and meanwhile, the center of gravity of the device can be further balanced after the liquid moves from one side to the other side, so that the center of gravity of the device is basically stable in the moving process of the sliding frame.

3. Through setting up expansion plate and limiting plate cooperation, can be according to the stiffness coefficient of the first spring of material weight adjustment, the length of the heavier first spring of material is short more, the stiffness coefficient of first spring is big more, then the difficult quilt of first spring is compressed more, through the stiffness coefficient of the first spring of material gravity adjustment, make the compression or the tensity of first spring as far as possible in relatively stable state, first spring is unmovable when avoiding material weight less, perhaps when weight is great, compresses first spring completely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of a material stacking crown block clamp according to the present invention;

FIG. 2 is an overall structural elevation view of an embodiment of a material stacking crown block clamp of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a side view of the overall construction of an embodiment of a material stacking crown block clamp of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is an exploded view of the overall structure of an embodiment of a material stacking crown block clamp of the present invention;

FIG. 7 is a schematic view of a sensing plate of an embodiment of a material stacking crown block clamp of the present invention;

FIG. 8 is a schematic view of a carriage of an embodiment of a material stacking crown block fixture of the present invention;

FIG. 9 is a schematic view of a crane of an embodiment of a material stacking crown block fixture of the present invention;

FIG. 10 is a side view of a crane of an embodiment of a material stacking crown block clamp of the present invention;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

fig. 12 is an enlarged view at X in fig. 11.

In the figure: 100. a lifting frame; 101. a counterweight chamber; 102. a through hole; 103. a hollow pipe; 104. an inclined hole; 105. a limiting plate; 106. a protrusion; 200. a friction wheel; 300. an induction plate; 301. a card slot; 302. a telescopic pipe; 303. a transverse groove; 400. a retractable plate; 401. a limiting block; 402. a baffle plate; 500. a pressing plate; 501. a friction plate; 600. a carriage; 601. a hydraulic cylinder; 602. a first spring; 603. a slider; 604. a chute; 605. a friction lever; 606. a first vertical slot; 700. a connecting frame; 701. a connecting rod; 702. a hinged column; 800. a hinged lever; 900. and (4) clamping the plate.

Detailed Description

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.

An embodiment of a material stacking crown block clamp of the invention is shown in fig. 1 to 12.

A material stacking crown block fixture comprises a lifting frame 100, a clamping mechanism and a buffering mechanism. The crane 100 can move up and down and can be arranged in a sliding manner, specifically, a sliding rail is arranged at the top of a workshop, a bridge of the overhead crane is slidably arranged on the sliding rail, the crane 100 is arranged on the bridge of the overhead crane through a hoisting mechanism, and when the crane is used, the crane moves on the sliding rail through driving the bridge, so that the position of the bridge is changed, the position of the crane 100 is further changed synchronously, and the crane 100 slides. The hoisting mechanism is arranged between the crane 100 and the bridge frame, the crane 100 can be driven by the hoisting mechanism to move up and down, and the hoisting mechanism can be a winch. This process is prior art and will not be described in any greater detail herein.

The buffer mechanism comprises an induction plate 300, a sliding frame 600, two friction wheels 200 and two extrusion plates 500; the sensor panel 300 is installed at the lower end of the crane 100 to be movable up and down, and the carriage 600 is installed to be slidable in the sensor panel 300 in a horizontal direction (in a left-right direction as shown in fig. 2). The sliding frame 600 is connected to the sensing plate 300 at two ends thereof by a plurality of first elastic members, which are disposed along the horizontal direction and are first springs 602, so as to stretch or compress the first springs 602 when the sliding frame 600 moves relative to the sensing plate 300.

The two friction wheels 200 are respectively and rotatably installed at the lower end of the lifting frame 100, the friction rod 605 is arranged at the upper end of the sliding frame 600, the friction rod 605 is arranged between the two friction wheels 200, and the friction rod 605 is always in contact with the two friction wheels 200, so that when the friction rod 605 moves, the two friction wheels 200 can be driven to rotate through friction transmission. Specifically, as shown in fig. 5 and 8, the sliding rack 600 is provided with a slider 603, the sensing plate 300 is provided with a transverse slot 303, and the slider 603 is slidably mounted on the transverse slot 303. The friction lever 605 is disposed at the upper end of the slider 603.

Two balance weight cavities 101 are defined inside the lifting frame 100, the two balance weight cavities 101 are respectively arranged at two ends of the lifting frame 100, liquid is filled in the two balance weight cavities 101, the two balance weight cavities 101 are communicated with the two extrusion plates 500 and are respectively slidably mounted in the two balance weight cavities 101, specifically, as shown in fig. 9, through holes 102 are formed in the two balance weight cavities 101, and the two extrusion plates 500 respectively penetrate through the two through holes 102 and are slidably mounted in the balance weight cavities 101.

All be provided with friction plate 501 on two stripper plates 500, two friction plates 501 are set up face to face, the one end fixed connection that two friction plates 501 are close to each other, the one end that two friction plates 501 are close to each other sets up between two friction pulleys 200, and contacts with friction pulley 200 all the time to after friction pulley 200 rotates, can make two friction plates 501 remove through friction drive, and the moving direction is the same, and then make stripper plate 500 remove the liquid in the extrusion counter weight chamber 101. The clamping mechanism is mounted on the sliding frame 600, and the clamping mechanism can clamp the material. When the sliding frame 600 and the clamping mechanism generate motion lag, the first spring 602 generates elastic deformation, so that the sliding frame 600 moves relative to the induction plate 300, further friction transmission is generated between the friction rod 605 and the friction wheels 200, the two friction wheels 200 are driven to rotate, after the two friction wheels 200 rotate, the two friction wheels 200 simultaneously generate friction transmission with the two friction plates 501, the two friction plates 501 move in the same direction, the friction plates 501 move, the extrusion plate 500 extrudes liquid in the counterweight cavity 101, the inertia of materials is converted into power for moving the liquid in the counterweight cavity 101, and the density of the liquid in the counterweight cavity 101 can be set, so that the device is in a stable state as far as possible, and the gravity center of the device is prevented from being deviated too much.

Specifically, the upper end of the induction plate 300 is provided with a plurality of telescopic pipes 302, the telescopic pipes 302 are arranged along the vertical direction, the lower end of the lifting frame 100 is provided with a plurality of hollow pipes 103, each hollow pipe 103 is arranged corresponding to one telescopic pipe 302, each hollow pipe 103 is connected with one telescopic pipe 302 through a second elastic piece, and the second elastic piece is a second spring, so that the induction plate 300 can only move up and down relative to the lifting frame 100.

In the present embodiment, as shown in fig. 5, 6 and 8, the gripping mechanism includes a hydraulic cylinder 601, a link frame 700, two hinge rods 800 and two jaws 900. The hydraulic cylinder 601 is installed in the sliding frame 600, the connecting frame 700 is installed at the lower end of the hydraulic cylinder 601, the connecting frame 700 is configured to move up and down only, the hydraulic cylinder 601 is used for driving the connecting frame 700 to move up and down, one ends of the two hinge rods 800 are respectively and rotatably installed at the lower end of the connecting frame 700, the two clamping plates 900 are respectively installed at the other ends of the two hinge rods 800, the two clamping plates 900 are slidably installed on the sliding frame 600, the two hinge rods 800 are obliquely arranged, so that when the hydraulic cylinder 601 drives the connecting frame 700 to move down, the connecting frame 700 enables the two clamping plates 900 to approach each other through the two hinge rods 800, and when the hydraulic cylinder 601 drives the connecting frame 700 to move up, the connecting frame 700 enables the two clamping plates 900 to move away from each other through the two hinge rods 800. Specifically, as shown in fig. 8, the connecting frame 700 includes a connecting rod 701 and a cross, the connecting rod 701 connects the hydraulic cylinder 601 with the cross, the connecting rod 701 and the cross are of an integrally formed structure, a first vertical slot 606 arranged along the vertical direction is formed in the sliding frame 600, the transverse end of the cross is slidably mounted in the first vertical slot 606, so that the connecting frame 700 can only move up and down, two hinge columns 702 are arranged at the longitudinal end of the cross, and each hinge column 702 is hinged to one end of one hinge rod 800. A sliding groove 604 is formed in the sliding frame 600, the sliding groove 604 is arranged along the horizontal direction, and the clamping plate 900 is slidably mounted on the sliding groove 604. It should be noted that the gripping mechanism may be replaced by other existing gripping means.

In the embodiment, after the material clamping mechanism clamps the material, the crane 100 is lifted by the lifting mechanism, and then the crane 100 is driven by the crane bridge to move, due to the gravity inertia of the material, the sliding frame 600 and the clamping mechanism generate motion lag, so that the first spring 602 generates elastic deformation, the sliding frame 600 moves relative to the induction plate 300, further friction transmission is generated between the friction rod 605 and the friction wheels 200, so that the two friction wheels 200 rotate, after the two friction wheels 200 rotate, the two friction wheels 200 simultaneously generate friction transmission with the two friction plates 501, so that the two friction plates 501 move in the same direction, the friction plates 501 move, so that the extrusion plate 500 extrudes the liquid in the counterweight cavity 101, inertia of the material is released, and the power for moving the liquid in the counterweight cavity 101 is converted, and the device can be in a stable state as far as possible by setting the density of the liquid in the counterweight cavity 101. In the same way, when the device stops, the liquid in the counterweight cavity 101 is also extruded in the same way, namely, the sliding frame 600, the friction rod 605, the friction wheel 200 and the friction plate 501 are arranged, so that the inertia of the clamped materials is released when the device starts and stops, the inertia is converted into the power for moving the liquid in the counterweight cavities 101, and the loss of a lifting mechanism caused by the inertia of the materials when the device starts and stops is avoided.

In this embodiment, as shown in fig. 3 and 6, the crane 100 is provided at the lower end thereof with two inclined holes 104, and the two friction wheels 200 are rotatably mounted at the upper ends thereof to the two inclined holes 104, respectively. The friction wheel 200 includes a cylindrical wheel and a conical wheel. The cylindrical wheel is arranged at the upper end of the conical wheel, the upper end of the conical wheel is larger than the lower end of the conical wheel, the cylindrical wheel and the conical wheel are of an integrally formed structure, the cylindrical wheel is always in contact with the friction plate 501, the conical wheel is always in contact with the friction rod 605, after the material is clamped, the gravity of the material enables the sensing plate 300 to move downwards, the descending amount of the sensing plate 300 is positively correlated with the weight of the material, the sliding frame 600 synchronously moves downwards due to the downward movement of the sensing plate 300, and the sliding frame 600 moves downwards to drive the friction rod 605 to move downwards so as to change the transmission ratio of the friction rod 605 to the friction wheel 200.

According to the embodiment, the transmission ratio between the friction rod 605 and the friction wheel 200 can be changed according to the weight of a material, after the material is clamped, the gravity of the material can enable the induction plate 300 to descend, the induction plate 300 descends to enable the sliding frame 600 to descend, the sliding frame 600 descends to enable the friction rod 605 at the upper end of the sliding frame 600 to descend, and the transmission ratio between the friction rod 605 and the friction wheel 200 is changed, namely the heavier the material is, the larger the distance that the induction plate 300 drives the sliding frame 600 to descend is, after the lifting frame 100 moves horizontally, the more the number of turns of the friction wheel 200 rotates under the condition that the sliding distance of the induction frame is not changed, the larger the movement amount of the friction plate 501 in friction transmission with the cylindrical wheel is due to the fact that the friction wheel 200 and the cylindrical wheel are of an integrated structure is formed, the larger the movement amount of the friction plate 501 in friction transmission with the cylindrical wheel is, the larger the inertia of the material is due to the larger the gravity of the material, the conical wheel and the cylindrical wheel are matched, so that the movement amount of the friction plate 501 can enable the pressing plate 500 to press liquid in one side of the liquid in the balance cavity 101 to further stabilize the gravity of the sliding frame after the gravity of the device is changed.

In this embodiment, as shown in fig. 4, 6, 7, 9, 10, 11 and 12, a material stacking crown block fixture further includes a plurality of adjusting mechanisms, and each adjusting mechanism includes a limiting plate 105 and a plurality of telescopic plates 400. The limiting plate 105 is arranged at the lower end of the lifting frame 100 in the vertical direction, a plurality of limiting cavities are defined in the limiting plate 105, the limiting cavities are arranged in the vertical direction, each limiting cavity is internally provided with a protrusion 106, the protrusions 106 are wedge-shaped, and the heights of the protrusions 106 gradually decrease from two ends to the middle. Every expansion plate 400 corresponds the setting with a spacing chamber, and the one end of every expansion plate 400 of initial corresponds the spacing chamber laminating that sets up with one, and every equal slidable mounting of expansion plate 400 is in tablet 300.

The other end of each expansion plate 400 is provided with a baffle 402, and each baffle 402 is initially arranged between one gap of the first spring 602 but is not overlapped with the first spring 602, that is, the initial baffle 402 does not affect the normal movement of the first spring 602, and the baffle 402 can block the first spring 602 after extending out towards one side of the first spring 602, so as to change the stiffness coefficient of the first spring 602. And the inside of expansion plate 400 and the inside of tablet 300 set up to the magnetic structure of repulsion, make the expansion plate have the trend of moving to limiting plate 105 one end all the time to in initial condition expansion plate 400 can be in and can not move between first spring 602 and the spacing chamber. Specifically, a plurality of clamping grooves 301 are formed in the induction plate 300, at least one limiting block 401 is arranged on each expansion plate 400, the limiting blocks 401 are slidably mounted in the clamping grooves 301, the limiting blocks 401 and the clamping grooves 301 are of repellent magnetic structures, the number of the limiting blocks 401 is two, and the two limiting blocks 401 are respectively arranged at the upper end and the lower end of the expansion plate 400.

This embodiment is got at the material clamp after, tablet 300 descends, drive expansion plate 400 synchronous decline, be close to spacing intracavity portion's arch 106 gradually, expansion plate 400 that is at both ends will earlier contact with the arch 106 of spacing intracavity, move down gradually along with tablet 300, spacing intracavity portion's arch 106 will make expansion plate 400 move towards the direction of first spring 602, cut first spring 602, and the gravity of material is big more, the volume that tablet 300 moved down is big more, the quantity that expansion plate 400 stretches out is more, first spring 602 is shorter. Further, in the present embodiment, four adjustment mechanisms are provided. Specifically, the limiting plate 105 is arranged around the lifting frame 100, and the retractable plate 400 is arranged corresponding to the limiting plate 105.

This embodiment is through setting up expansion plate 400 and limiting plate 105 cooperation, can be according to the stiffness coefficient of material weight adjustment first spring 602, and the heavier first spring 602's of material length is shorter, and the stiffness coefficient of first spring 602 is big more, and then first spring 602 is difficult to be compressed, through the stiffness coefficient of material gravity adjustment first spring 602, makes the compression or the tensile volume of first spring 602 at the relatively stable state as far as possible. Avoiding that the first spring 602 does not move when the weight of the material is small or that the first spring 602 is fully compressed when the weight is large.

With the combination of the above embodiments, the specific working principle and working process of the present invention are as follows: when the crane is used, firstly, the bridge is driven to move on a sliding rail in a workshop to enable the whole crane to move to the upper end of a material, then the crane 100 is controlled to descend by utilizing the hoisting mechanism, then the hydraulic cylinder 601 drives the connecting frame 700 to move downwards, the connecting frame 700 enables the two clamping plates 900 to approach each other through the two hinge rods 800 to clamp the material, then the crane 100 is driven to move upwards by utilizing the hoisting mechanism, at the moment, the gravity of the material enables the induction plate 300 to descend, the induction plate 300 descends to enable the sliding frame 600 to descend, in the descending process of the sliding frame 600, on one hand, the sliding frame 600 descends the friction rod 605 at the upper end of the sliding frame 600, the transmission ratio between the friction rod 605 and the friction wheel 200 is changed, the heavier the material is, the descending distance of the sliding frame 600 driven by the induction plate 300 is larger, namely, after the crane 100 moves horizontally, the rotating number of turns of the friction wheel 200 is larger under the condition that the sliding distance of the induction frame is unchanged, and the friction wheel 200 and the cylindrical wheel are of an integrated structure, and the moving amount of the friction plate 501 driven by the cylindrical friction wheel is larger. On the other hand, the induction plate 300 descends to drive the expansion plate 400 to descend synchronously and approach to the protrusions 106 in the limiting cavity gradually, the expansion plates 400 at two ends contact with the protrusions 106 in the limiting cavity first, and along with the gradual downward movement of the induction plate 300, the protrusions 106 in the limiting cavity enable the expansion plates 400 to overcome the repulsive force between the expansion plates 400 and the magnetic structures in the induction plate 300, so that the expansion plates 400 move towards the first spring 602 and cut off the first spring 602, the larger the gravity of the material is, the larger the downward movement amount of the induction plate 300 is, the more the expansion plates 400 extend, the shorter the first spring 602 is, and the larger the stiffness coefficient of the first spring 602 is. The stiffness coefficient of the first spring 602 is adjusted by the gravity of the material, so that the compression or extension amount of the first spring 602 is relatively stable as much as possible. Avoiding that the first spring 602 does not move when the weight of the material is small or that the first spring 602 is fully compressed when the weight is large.

Therefore, in the process that the lifting frame 100 ascends, the buffer mechanism can adjust the transmission ratio between the friction wheel 200 and the friction rod 605 and the stiffness coefficient of the first spring 602 according to the weight of the material, after the lifting frame 100 ascends, the lifting frame 100 is driven by the bridge frame to move, due to the gravity inertia effect of the material, the sliding frame 600 and the clamping mechanism generate motion lag, the first spring 602 generates elastic deformation, the sliding frame 600 moves relative to the induction plate 300, further friction transmission is generated between the friction rod 605 and the friction wheel 200, the two friction wheels 200 are driven to rotate, after the two friction wheels 200 rotate, the two friction wheels 200 simultaneously generate friction transmission with the two friction plates 501, the two friction plates 501 move in the same direction, the friction plates 501 move, the extrusion plate 500 is driven to extrude the liquid on one side in the counterweight cavity 101, the liquid on the other side is increased, the inertia when the material is started is released and converted into the power for moving the liquid in the counterweight cavity 101, and the liquid can further balance the gravity center of the device after moving from one side to the other side, so that the gravity center of the device is basically stabilized in the moving process of the sliding frame 600. Similarly, when the device is stopped, the liquid in the weight chamber 101 will be squeezed in the same manner.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims (7)

1. The utility model provides a material stack overhead traveling crane anchor clamps which characterized in that: comprises a lifting frame, a clamping mechanism and a buffer mechanism; the lifting frame can move up and down and can be arranged in a sliding manner; the buffer mechanism comprises an induction plate, a sliding frame, two friction wheels and two extrusion plates; the induction plate is only arranged at the lower end of the lifting frame in a vertically movable manner, the sliding frame is arranged on the induction plate in a sliding manner along the horizontal direction, the sliding frame and the left and right ends of the induction plate are connected through a plurality of first elastic pieces, the first elastic pieces are arranged along the horizontal direction, the two friction wheels are respectively and rotatably arranged at the lower end of the lifting frame, a friction rod is arranged at the upper end of the sliding frame and arranged between the two friction wheels, and the friction rod is always in contact with the two friction wheels, so that the two friction wheels can be driven to rotate through friction transmission when the friction rod moves; two balance weight cavities are defined in the lifting frame, the two balance weight cavities are respectively arranged at two ends of the lifting frame and are communicated, liquid is filled in the two balance weight cavities, the two extrusion plates are respectively installed in the two balance weight cavities in a sliding mode, friction plates are arranged on the two extrusion plates and are arranged face to face, one ends, close to each other, of the two friction plates are fixedly connected, one ends, close to each other, of the two friction plates are arranged between the two friction wheels and are always in contact with the friction wheels, so that after the friction wheels rotate, the two friction plates can be driven to move through friction transmission, and the extrusion plates can move to extrude the liquid in the balance weight cavities; the clamping mechanism is mounted on the sliding frame and can grab and clamp the material.

2. The material stacking crown block clamp of claim 1, wherein: the lower end of the lifting frame is provided with two inclined holes, and the upper ends of the two friction wheels are respectively and rotatably arranged in the two inclined holes; the friction wheel comprises a cylindrical wheel and a conical wheel, the cylindrical wheel is arranged at the upper end of the conical wheel, the upper end of the conical wheel is larger than the lower end of the conical wheel, the cylindrical wheel and the conical wheel are of an integrally formed structure, the cylindrical wheel is always in contact with the friction plate, and the conical wheel is always in contact with the friction rod.

3. The material stacking crown block clamp of claim 1, wherein: the adjusting mechanism comprises a limiting plate and a plurality of telescopic plates; the limiting plate is arranged at the lower end of the lifting frame along the vertical direction, the limiting plate is provided with a plurality of limiting cavities, the limiting cavities are arranged along the vertical direction, a bulge is arranged in each limiting cavity, each bulge is wedge-shaped, and the heights of the plurality of bulges are gradually reduced from two ends to the middle; each expansion plate is arranged corresponding to one limiting cavity, one end of each expansion plate is initially attached to one corresponding limiting cavity, and each expansion plate is slidably mounted on the induction plate; every expansion plate other end all is provided with the baffle, and every baffle of initial sets up between a gap of first elastic component, nevertheless does not coincide with first elastic component, and the expansion plate is inside to set up to repellent's magnetic structure with the tablet inside, makes the expansion plate have the trend that removes to limiting plate one end all the time to can not remove between first elastic component and spacing chamber at initial state expansion plate.

4. A material stacking crown block clamp as claimed in claim 2, wherein: be provided with a plurality of draw-in grooves on the tablet, be provided with at least one stopper on every expansion plate, stopper slidable mounting is in the draw-in groove, stopper and draw-in groove inside for repellent magnetic structure.

5. The material stacking crown block clamp of claim 1, wherein: the clamping mechanism comprises a hydraulic cylinder, a connecting frame, two hinge rods and two clamping plates; the pneumatic cylinder is installed in the carriage, and the link is installed in the pneumatic cylinder lower extreme, and the link is configured into and only can reciprocate, and the pneumatic cylinder is used for driving the link and reciprocates, and two hinge bar one end rotationally installs respectively in the link lower extreme, and two splint are installed respectively in two hinge bar other ends, and two splint slidable mounting in the carriage, two hinge bar slope settings.

6. The material stacking crown block clamp of claim 5, wherein: the connecting frame comprises a connecting rod and a cross, the connecting rod is connected with the hydraulic cylinder and the cross, the connecting rod and the cross are of an integrated structure, a first vertical groove arranged along the vertical direction is formed in the sliding frame, the transverse end of the cross is slidably mounted in the first vertical groove, so that the connecting frame can only move up and down, two hinge columns are arranged at the longitudinal end of the cross, and each hinge column is hinged with one end of one hinge rod; a sliding groove is formed in the sliding frame and is arranged in the horizontal direction, and the clamping plate is slidably mounted in the sliding groove.

7. The material stacking crown block clamp of claim 1, wherein: the induction plate upper end is provided with a plurality of flexible pipes, and the extension pipe sets up along vertical direction, and the crane lower extreme is provided with a plurality of hollow tubes, and every hollow tube corresponds the setting with a flexible pipe, links to each other through the second elastic component between every hollow tube and a flexible pipe for the induction plate only can reciprocate for the crane.

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