CN112938748A - Lifting appliance for clamping cylindrical articles - Google Patents
Lifting appliance for clamping cylindrical articles Download PDFInfo
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- CN112938748A CN112938748A CN202110315649.2A CN202110315649A CN112938748A CN 112938748 A CN112938748 A CN 112938748A CN 202110315649 A CN202110315649 A CN 202110315649A CN 112938748 A CN112938748 A CN 112938748A
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- arm support
- clamping
- sliding
- centering
- synchronous
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- 230000007246 mechanism Effects 0.000 claims abstract description 88
- 230000001360 synchronised effect Effects 0.000 claims abstract description 58
- 230000009021 linear effect Effects 0.000 claims abstract description 54
- 210000000078 claw Anatomy 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 210000002478 hand joint Anatomy 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/425—Gripping members engaging only the external or internal surfaces of the articles motor actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/445—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
A lifting appliance for clamping cylindrical articles comprises an upper arm support, a lower arm support, a linear sliding mechanism, a mechanical arm support and a synchronous connecting rod mechanism; the top end of the upper arm support is provided with a centering connection mechanism correspondingly connected with an external crane, and the bottom end surface of the upper arm support is correspondingly connected with the center of the top end surface of the lower arm support; at least three linear sliding mechanisms are uniformly distributed on the lower arm support, the moving directions of the linear sliding mechanisms face to the central position of the lower arm support, and each linear sliding mechanism is provided with a mechanical clamping arm which can move along with the sliding piece and synchronously clamp or loosen; a synchronous connecting rod mechanism which is correspondingly connected with the plurality of linear sliding mechanisms and can ensure that the plurality of linear sliding mechanisms slide synchronously is arranged at the center of the lower arm support; the lifting appliance can ensure the synchronism of the actions of a plurality of mechanical clamping arms, and the clamping capacity and the stability and the accuracy of linear actions of the mechanical clamping arms are higher.
Description
Technical Field
The invention relates to the technical field of mechanical clamp equipment, in particular to a lifting appliance for clamping cylindrical articles.
Background
The mechanical clamp or the mechanical claw is a mechanical device capable of replacing manpower to clamp an object, and is widely applied to robot operation, crane hoisting and the like; the mechanical clamp is used for clamping an object, and is related to the shape structure of the clamped object and the clamping and loosening design structure of the mechanical clamp, and the common mechanical clamp mainly comprises two clamping structures, namely a mechanical clamp simulating the rotation of a human hand joint and a mechanical clamp synchronously opening and closing and linearly moving, and the second mechanical clamp is obviously more suitable for hoisting a large cylindrical object; the traditional clasping clamp directly drives the mechanical clamp by a plurality of cylinders or motors to clamp a heavy object, and has poor synchronization effect only by electric linkage between the cylinders or the motors, so that the clamping capacity and the accuracy of the mechanical clamp arm are affected, the clamping capacity and the accuracy of the linear action of the mechanical clamp arm are affected, the cylinders or the motors are required to be large to achieve the same clamping force, and the whole structure of the lifting appliance is large;
in addition, in the actual use process, the mechanical clamp is often required to be matched with an external crane such as a crane or a robot, and the mechanical clamp is generally arranged on a mechanism of the external crane, after the mechanical clamp clamps an object, the mechanical clamp is lifted through a lifting structure, then translated in place, and then lowered, and as the traditional lifting mechanism and the mechanical clamp are flexibly connected through a lifting rope, the mechanical clamp is easy to swing and rotate in the process of clamping the object to move, the clamping difficulty is increased, and the clamp releasing situation is easy to occur, so that the mechanical clamp is very dangerous;
chinese patent (CN 20172168708102) discloses an electric internal holding clamping jaw mechanism, wherein a motor drives a ball screw to rotate, the ball screw pulls an inner cylinder to slide in an outer cylinder, the sliding of the inner cylinder drives a small clamping jaw and a connecting rod shaft to rotate, and finally the small clamping jaw is utilized to support the inner wall of a product, but the mechanism can only be used for carrying hollow cylindrical products and cannot carry solid cylindrical objects; therefore, in summary, there is a need in the market for a lifting device that can ensure the synchronization of the actions of a plurality of mechanical gripper arms, enhance the clamping capability of the mechanical gripper arms and the stability and accuracy of linear actions, and prevent the mechanical gripper from swinging.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a lifting appliance for clamping cylindrical articles.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lifting appliance for clamping cylindrical objects comprises an upper arm support, wherein the top end of the upper arm support is provided with a centering connection mechanism correspondingly connected with an external crane, and the bottom end surface of the upper arm support is provided with a lifting device capable of clamping cylindrical objects;
preferably, the hoisting device comprises a lower arm support, a linear sliding mechanism, a mechanical arm support and a synchronous connecting rod mechanism, wherein the center of the top end surface of the lower arm support is correspondingly connected with the upper arm support; at least three linear sliding mechanisms are uniformly distributed on the lower arm support, the moving directions of the linear sliding mechanisms face to the central position of the lower arm support, and each linear sliding mechanism is provided with a mechanical clamping arm which can move along with the sliding piece and synchronously clamp or loosen; a synchronous connecting rod mechanism which is correspondingly connected with the plurality of linear sliding mechanisms and can ensure that the plurality of linear sliding mechanisms slide synchronously is arranged at the center of the lower arm support;
preferably, a sliding cavity is arranged in the lower arm support, the linear sliding mechanism comprises a sliding rail assembly and a sliding trolley, the sliding rail assembly is composed of two clamping plates with parallel plate surfaces, the corresponding ends of the two clamping plates are detachably and fixedly connected through end plates, two rail grooves along the axial direction of the clamping plates are symmetrically arranged on the inner plate surfaces of the two clamping plates, and the rail grooves are correspondingly and slidably connected with the sliding trolley;
preferably, the sliding trolley comprises a trolley frame plate which is horizontally arranged, a plurality of lower rollers which can be abutted and rolled with the lower groove wall of the corresponding track groove and two upper rollers which can be abutted and rolled with the upper groove wall of the corresponding track groove are symmetrically arranged on two sides of the trolley frame plate, and the trolley frame plate is correspondingly connected with the mechanical clamping arm;
preferably, the mechanical clamping arm comprises a driving mechanism, a screw, a driving slider, a bearing seat, a slide bar and a driven slider, wherein the driving end of the driving mechanism is correspondingly connected with the head end of the screw, a head rod body of the screw is correspondingly connected with the linear sliding mechanism, a rod body of the screw is provided with the driving slider, the tail end of the screw is correspondingly matched and connected with the bearing seat, the bottom surface of the bearing seat is provided with a positioning seat correspondingly connected with the head end of the slide bar, the slide bar is correspondingly coaxial with the screw, the rod body of the slide bar is provided with the driven slider and a claw piece for clamping a cylindrical heavy object, the driven slider is correspondingly connected with the driving slider through a connecting rod, the tail end of the slide bar is provided with a fixing seat;
preferably, a protective shell is arranged outside the screw rod, and a wire slot is formed between the tail end of the protective shell and the fixed seat;
preferably, the synchronous link mechanism comprises a turntable shaft, a rotating bearing, a synchronous turntable and synchronous connecting rods, the turntable shaft is fixedly arranged in the center of the bottom surface of the lower arm support, the rotating bearing is sleeved on the shaft body of the turntable shaft, the synchronous turntable is sleeved on the outer wall of the outer ring of the rotating bearing, a plurality of synchronous connecting rods are hinged to the outer edge of the synchronous turntable, and the other ends of the synchronous connecting rods are respectively hinged to corresponding linear sliding mechanisms;
preferably, a shaft body of the turntable shaft is provided with a shaft shoulder for abutting against the inner end of an inner ring of the rotating bearing, the center of the synchronous turntable is provided with a step through hole for mounting and abutting against the inner end of an outer ring of the rotating bearing, the outer end surface of the rotating bearing is provided with a spring retainer ring, the wall of a counter bore of the step through hole of the synchronous turntable is provided with an annular clamping groove matched with the spring retainer ring for clamping, and the inner plate surface of the turntable protecting plate is coaxially fixed with a top sleeve for abutting against the outer end of the inner ring of;
preferably, the centering connecting mechanism comprises a supporting plate, a hoisting pulley and a centering shaft; the two supporting plates are symmetrically arranged on the outer wall surface of the upper arm support, the center of the plate surface of each supporting plate is fixedly connected with the corresponding side surface of each supporting rod, the corresponding ends of the two supporting plates are fixedly connected through end cover plates, and two lifting pulleys are symmetrically arranged on the outer plate surfaces of the two end cover plates; the centering shaft is coaxially fixed on the top end surface of the upper arm support, a plurality of clamping grooves which are axially arranged along the centering shaft and penetrate through the top end surface of the centering shaft are uniformly formed in the shaft wall of the centering shaft, and the centering shaft is correspondingly matched and inserted with a centering sleeve arranged on an external crane;
preferably, the top end of the centering sleeve is provided with an image acquisition device, and the centering sleeve is in transmission connection with a rotating motor capable of driving the centering sleeve to rotate by taking the axis of the centering sleeve as a central line.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the invention discloses a lifting appliance for clamping cylindrical articles, which adopts a mode that a plurality of mechanical clamping arms synchronously move along the radial direction of a clamped cylindrical object to be clamped and tightly hold the cylindrical object, can ensure the stability and the accuracy of the linear action of the mechanical clamping arms through a linear sliding mechanism, and can ensure the synchronism of the mechanical clamping arms through a synchronous connecting rod mechanism, thereby ensuring the clamping capacity of the mechanical clamping arms to cylindrical heavy objects; in addition, the lifting appliance can be easily connected with a corresponding crane through the centering connection mechanism, so that the cylindrical heavy object can still be in a stable state after being lifted;
in addition, the slide rail assembly in the linear sliding mechanism adopts a double-clamping-plate design, so that while the structural strength and the movement balance are ensured, a gap is reserved so as not to hinder the installation and the movement of the mechanical clamping arm, the sliding trolley is clamped between the slide rail assemblies and moves by utilizing the roller, the flexibility of the action of the mechanical clamping arm is greatly improved, and the stability of the action of the mechanical clamping arm is also improved due to the design structures of the upper roller and the lower roller of the sliding trolley and the matching structure between the upper roller and the track groove; according to needs, through the synchronous turntable that sets up among the synchronous link mechanism for linear sliding mechanism can drive synchronous turntable through synchronous connecting rod and rotate when being linear motion, can feed back to every linear sliding mechanism through every synchronous connecting rod when synchronous turntable rotates, makes the mechanical arm lock have better synchronism, thereby makes whole anchor clamps of holding tightly have better effect of holding tightly.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the lower arm support;
FIG. 3 is a schematic structural view of a mechanical arm;
FIG. 4 is an enlarged view of the part A of FIG. 3;
FIG. 5 is an enlarged view of the portion B shown in FIG. 3;
FIG. 6 is a schematic structural view of a synchronization link mechanism;
FIG. 7 is a schematic structural view of the turntable shield;
FIG. 8 is an enlarged view of the structure of the portion C of FIG. 7;
FIG. 9 is a schematic view of the centering shaft;
fig. 10 is a schematic structural view of the centering sleeve.
In the figure: 1. a lower arm support; 2. a linear sliding mechanism; 201. a slide rail assembly; 20101. a splint; 20102. an end plate; 20103. a track groove; 202. a sliding trolley; 20201. a trolley frame plate; 20202. a lower roller; 20203. an upper roller; 20204. a buffer block; 3. a mechanical clamping arm; 301. a drive mechanism; 302. a screw; 303. an active slider; 304. a bearing seat; 305. a slide bar; 306. a driven slider; 307. a claw piece; 308. a connecting rod; 309. a fixed seat; 3010. a protective shell; 3011. a wire slot; 3012. positioning seats; 4. a synchronous linkage mechanism; 401. a turntable shaft; 402. a rotating bearing; 403. a synchronous turntable; 404. a synchronous connecting rod; 405. a connecting screw; 406. a turntable guard plate; 407. jacking and sleeving; 408. a spring collar; 5. a linkage rod; 6. an upper arm support; 601. a support disc; 602. a support bar; 603. a rib plate; 7. a centering connection mechanism; 701. a support plate; 70101. hoisting holes; 702. an end cover plate; 703. hoisting a pulley; 704. aligning the middle shaft; 70401. a card slot; 705. a semicircular plate; 706. an arc-shaped plate; 8. centering sleeve; 801. a guide; 802. an opening expanding sleeve; 803. a buffer sleeve; 804. an image acquisition device.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
The lifting appliance for clamping cylindrical objects, which is described in conjunction with the attached drawings 1-10, comprises an upper arm support, wherein the top end of the upper arm support is provided with a centering connection mechanism correspondingly connected with an external crane, and the bottom end surface of the upper arm support is provided with a lifting device capable of clamping cylindrical objects; the lifting device is used for clamping cylindrical heavy objects, the upper arm frame 6 and the centering connecting mechanism 7 are mainly used for being correspondingly connected with an external crane, and the external crane drives the lifting appliance to lift and move; in addition, the upper arm support 6 comprises a support plate 601 and a support rod 602, the support plate 601 is fixedly installed at the center of the top surface of the lower arm support 1, the support rod 602 is vertically arranged at the center of the top surface of the support plate 601, a plurality of ribbed plates 603 for reinforcing connection with the support plate 601 are annularly arranged at the bottom end of the support rod 602 to ensure stable connection, and a centering connection mechanism 7 is arranged at the top end of the support rod 602;
the centering connection mechanism 7 comprises a support plate 701, a hoisting pulley 703 and a centering shaft 704 as required; the number of the support plates 701 is two, the two support plates 701 are symmetrically arranged on the outer wall surface of the upper arm support 6, the outer wall surface of the upper arm support 6 is specifically the outer wall surface of the top end of the support rod 602, and in addition, the support plates 701 and the upper arm support 6 are detachably and fixedly connected through two rows of screws, so that the support plates 701 can be conveniently disassembled and assembled while the sufficient connection strength is ensured; in addition, the plate surface of the supporting plate 701 is provided with a hoisting hole 70101 for loading, unloading and hoisting during transportation of the clasping clamp, and the inclined stay rope can be connected to prevent rotation and shaking during hoisting in a crane application; the corresponding ends of the two support plates 701 are fixedly connected through an end cover plate 702, and two lifting pulleys 703 are symmetrically arranged on the outer plate surface of the two end cover plates 702, so that the stable lifting is ensured, and the function of preventing the lower arm support 1 from rotating is achieved; according to the requirement, a pulley cover is arranged outside the lifting pulley 703 and is formed by correspondingly connecting two semi-circular plates 705 and an arc plate 706, the two semi-circular plates 705 are fixedly connected with the two outer end faces of the wheel shaft one by one respectively, the two semi-circular plates 705 are connected through the arc plate 706, the arc plate 706 correspondingly wraps and is close to the lower wheel face of the lifting pulley 703, and the lifting rope can be prevented from being separated from the lifting pulley 703 in the lifting process while the installation of the lifting rope is not hindered;
the centering shaft 704 is coaxially fixed on the top end face of the upper arm support 6, a plurality of clamping grooves 70401 which are axially arranged along the centering shaft 704 and penetrate through the top end face of the centering shaft 704 are uniformly formed in the shaft wall of the centering shaft 704, the centering shaft 704 is correspondingly matched and inserted with a centering sleeve 8 arranged on an external crane, a guide piece 801 correspondingly matched with the clamping grooves 70401 is arranged on the inner wall of the centering sleeve 8, when the whole clamp body is lifted upwards, the centering shaft 704 can be inserted into the centering sleeve 8 fixed on the crane, and the purpose of preventing the whole holding clamp from rotating is achieved by utilizing a clamping structure of the guide piece 801 and the clamping grooves 70401; according to the requirement, the top end of the centering shaft 704 is provided with a taper angle, and the bottom end of the centering sleeve 8 is connected with an expanding sleeve 802, so that the centering shaft 704 can be conveniently inserted; in addition, the guide 801 is a card strip, and the bottom end of the card strip is a pointed end, which is also convenient for the guide 601 to be inserted into the card slot 501; preferably, the guide 801 is a guide wheel, so that centering is more flexible and faster, and abrasion is reduced; in addition, the inner top end of the centering sleeve 8 is provided with a buffer sleeve 803 which plays a role in limiting and buffering the centering shaft 704; although two hoisting pulleys 703 play a role in balancing, when the clamp body rises and the centering shaft 704 is not inserted into the centering sleeve 8, the centering sleeve 8 inevitably rotates in a small amplitude due to a small lifting rope, so that the guide 801 and the clamping groove 70401 may deviate by a certain angle and cannot be inserted correspondingly, therefore, the image acquisition device 804 is installed at the top end of the centering sleeve 8, the centering sleeve 8 is in transmission connection with a rotating motor capable of driving the centering sleeve 8 to rotate by taking the axis of the centering sleeve as a central line, the deviation information of the clamping groove 70401 is acquired by the image acquisition device 804 and fed back to the rotating motor, and the rotating motor is used for controlling the centering sleeve 8 to rotate by a proper angle, so that the centering shaft 704 can be finally inserted into the centering sleeve 8 in a matching manner;
the hoisting device comprises a lower arm support 1, a linear sliding mechanism 2, a mechanical arm support 3 and a synchronous connecting rod mechanism 4, wherein the center of the top end surface of the lower arm support 1 is correspondingly connected with an upper arm support 6; the lower arm support 1 is uniformly provided with at least three linear sliding mechanisms 2, the number of the linear sliding mechanisms 2 determines the number of the mechanical arm supports 3, so as to ensure the clamping capacity of the mechanical arm supports 3, the number is set to be three, four, five, six or eight, wherein six are the best, the moving directions of the linear sliding mechanisms 2 all face to the central position of the lower arm support 1, in addition, a plurality of cavities for installing the linear sliding mechanisms are arranged inside the lower arm support, the linear sliding mechanisms 2 comprise a slide rail assembly 201 and a sliding trolley 202, the slide rail assembly 201 is composed of two clamping plates 20101 with parallel plate surfaces, the two clamping plates are correspondingly installed in the cavities of the lower arm support, the slide rail assembly 201 adopts a double-clamping plate 20101 design, a gap is reserved while the structural strength and the moving balance are ensured, the installation and the moving of the mechanical arm supports 3 are not hindered, the corresponding ends of the two clamping plates 20101 are detachably and fixedly connected through end plates, the connecting strength is guaranteed, the end plate 20102 can be conveniently detached, then the sliding trolley 202 can be conveniently installed, the inner plate surfaces of the two clamping plates 20101 are symmetrically provided with two rail grooves 20103 along the axial direction of the clamping plates 20101, the rail grooves 20103 are used for supporting the sliding trolley 202 to move, the rail grooves 20103 correspondingly penetrate through the outer end surfaces of the corresponding clamping plates 20101 as required, and the sliding trolley 202 can be conveniently installed from the penetrating end of the rail groove 20103;
according to the requirement, the sliding trolley 202 comprises a trolley frame plate 20201 which is horizontally arranged, a plurality of lower rollers 20202 which can be abutted against the lower groove wall of the corresponding track groove 20103 to roll are symmetrically arranged on two sides of the trolley frame plate 20201, an inverted V-shaped guide rail is fixed on the inner surface of the lower groove wall of the track groove 20103 according to the requirement, the lower rollers 20202 are arranged into V-shaped wheels matched with the guide rail, and the lower rollers 20202 are ensured to roll along the guide rail in a straight line; in addition, four lower rollers 20202 are symmetrically installed on two sides of the trolley frame plate 20201 to ensure that the sliding trolley 202 moves stably and has sufficient bearing capacity, and two upper rollers 20203 capable of abutting against and rolling with the upper groove walls of the corresponding track grooves 20103 are symmetrically installed on two sides of the trolley frame plate 20201 to prevent the sliding trolley 202 from moving up and down; according to the requirement, the inner end of the trolley frame plate 20201, which is provided with the upper roller 20203, is upwarped, so that the upper roller 20203 can be properly smaller; the upper roller 20203 is a non-metal wheel such as a nylon wheel, which facilitates the installation of the sliding cart 202 into the rail groove 20103, and the cart frame plate 20201 is correspondingly connected to the gripper arm 3;
in addition, a buffer block 20204 capable of abutting against the end plate 20102 is fixedly arranged at one end of the trolley frame plate 20201, and plays a role of buffering when the sliding trolley 202 moves to the end plate 20102 at the outer end of the slide rail assembly 201, the upper roller 20203 is positioned at the tail end of the trolley frame plate 20201, so that the upper roller 20203 can play a certain role of buffering when abutting against the end surface of the rail groove 20103, and the upper roller 20203 is positioned at the other end of the trolley frame plate 20201; the sliding trolley 202 is clamped between the sliding rail assemblies 201 and moves by using the rollers, so that the flexibility of the action of the mechanical clamping arm 3 is greatly improved, and the stability of the linear action of the mechanical clamping arm 3 is also improved by the design structures of the upper roller 20203 and the lower roller 20202 of the sliding trolley 202 and the matching structure between the upper roller 20203 and the rail groove 20103, so that the whole clasping clamp can have a better clasping effect; the center of the lower plate surface of the trolley frame plate 20201 is connected with a connecting rod, the lower end of the connecting rod extends out of the gap between the two corresponding clamping plates 20101, the width of the connecting rod is smaller than the gap between the two clamping plates 20101, and the lower end of the connecting rod is fixedly connected with the upper end of the mechanical clamping arm 3, so that the movement of the whole mechanical clamping arm 3 is not hindered;
each linear sliding mechanism 2 is provided with a mechanical clamping arm 3 which can move along with the sliding piece and synchronously clasp or loosen; in addition, the mechanical arm 3 includes a driving mechanism 301, a screw 302, a driving slider 303, a bearing seat 304, a sliding rod 305 and a driven slider 306, the driving end of the driving mechanism 301 is correspondingly connected with the head end of the screw 302, the rotation of the screw 302 is controlled by the driving mechanism 301, the driving mechanism 301 is composed of a motor, a reducer and a frequency converter according to requirements, wherein the output end of the reducer is correspondingly and drivingly connected with the head end of the screw 302, the frequency converter can control the positive and negative rotation and the torque and the rotating speed of the output shaft of the motor, the reducer can increase the torque of the output shaft of the motor, and the screw 302 is correspondingly perpendicular to the output shaft of the motor, so that the power transmission of the motor can be better completed through; the rod body at the head end of the screw 302 is correspondingly connected with the linear sliding mechanism 2, so that the whole mechanical clamping arm 3 can perform stable and accurate linear motion, the rod body of the screw 302 is provided with the active sliding block 303, when the screw 302 rotates forwards, the active sliding block 303 rises along with the screw, when the screw 302 rotates backwards, the active sliding block 303 descends along with the screw, particularly, the screw 302 is externally provided with a protective shell 3010, a wire slot 3011 is arranged between the tail end of the protective shell 3010 and the fixed seat 309, the wire slot 3011 not only can play a role in strengthening the connection strength of the protective shell 3010 and the fixed seat 309, but also can be internally used for allowing cables to pass through, plays a role in intensively placing and protecting the cables, can prevent dust from influencing the sliding state between the screw 302 and the active sliding block 303 through the protective shell 3010 and can limit the rotation of the sliding block, so that the sliding block can only perform lifting movement along the screw 302, in particular, the shape of the wire slot 3011 is a V-shape, thereby improving the reliability of the wire slot 3011 itself;
the tail end of the screw 302 is correspondingly matched and connected with the bearing seat 304, the screw 302 can be driven to rotate independently through the matching of the bearing seat 304, other parts cannot be influenced, the bottom surface of the bearing seat 304 is provided with a positioning seat 3012 correspondingly connected with the head end of the slide rod 305, the positioning seat 3012 is used for fixing the head end position of the slide rod 305, the slide rod 305 is correspondingly coaxial with the screw 302, the rod body of the slide rod 305 is provided with a driven slide block 306 and a claw piece 307 used for clamping a cylindrical weight, in addition, the surface of the claw piece 307 is provided with anti-slip threads, the clamping capacity of the claw piece 307 for the cylindrical weight can be improved, the shape of the claw piece 307 is V-shaped, the contact area of the claw piece 307 and the cylindrical weight is improved, the whole clamping capacity of the clasping clamp is improved, the angle of the V-shaped is 150-179 degrees, 175 degrees are optimal, the driven slide block 306, according to the requirement, the number of the connecting rods 308 is multiple, the connection stability between the driving slider 303 and the driven slider 306 is further improved, the sliding fluency of the driven slider 306 is also improved, the tail end of the sliding rod 305 is provided with a fixed seat 309, a linkage rod 5 is hinged between the driven slider 306 and the fixed seats 309 of two adjacent clamping claws, the driven sliders 306 simultaneously lift along the corresponding sliding rods 305, then the linkage rods 5 between the adjacent mechanical clamping arms 3 perform cross action, at the moment, the linkage rods 5 ensure the clamping force of the mechanical clamping arms 3 on an object, and simultaneously the mechanical clamping arms 3 can drive the corresponding linear sliding mechanisms 2 to synchronously move towards the center of the lower arm support 1, so that the cylindrical heavy object can be finally grabbed, and in addition, the linear sliding mechanisms 2 perform passive action and only play a role in bearing; in addition, the linkage rod 5 is connected with the fixing seat 309 through a joint bearing, so that the flexibility of the action of the linkage rod 5 can be enhanced, and the friction force between the linkage rod 5 and the fixing seat 309 is small during the action, so that the abrasion of the linkage rod 5 is reduced, and the service life of the clamping device is prolonged;
the center of the lower arm support 1 is provided with a synchronous link mechanism 4 correspondingly connected with the plurality of linear sliding mechanisms 2, and the plurality of linear sliding mechanisms 2 are positioned on the same horizontal plane, the synchronous link mechanism 4 can further ensure that the plurality of linear sliding mechanisms 2 keep synchronous during action, and can limit the maximum sliding distance of the plurality of linear sliding mechanisms 2 to prevent the locking and clamping from occurring, according to requirements, the synchronous link mechanism 4 comprises a turntable shaft 401, a rotating bearing 402, a synchronous turntable 403 and a synchronous connecting rod 404, the center of the bottom surface of the lower arm support 1 is fixedly provided with the turntable shaft 401, the shaft body of the turntable shaft 401 is sleeved with the rotating bearing 402, the outer wall of the outer ring of the rotating bearing 402 is sleeved with the synchronous turntable 403, so that the synchronous turntable 403 can rotate relative to the turntable shaft 401 under the action of the rotating bearing 402, the outer edge of the synchronous turntable 403 is hinged with the plurality of synchronous connecting rods 404, by arranging the synchronous turntable 403, when the sliding trolley 202 does linear motion, the synchronous turntable 403 can be driven to rotate by the synchronous connecting rods 404, when the synchronous turntable 403 rotates, the synchronous turntable 403 can be fed back to each sliding trolley 202 by each synchronous connecting rod 404, so that the mechanical clamping arm 3 has better synchronism, the whole clamping fixture has better clamping effect, and the clamping of a plurality of linear sliding mechanisms 2 can be prevented, particularly, the synchronous connecting rods 404 are arranged as joint bearing connecting rods 308, the freedom degree of the motion of the synchronous connecting rods 404 can be improved, and the other ends of the synchronous connecting rods 404 are respectively hinged with the corresponding linear sliding mechanisms 2; according to the requirement, the outer end face of the turntable shaft 401 is coaxially and fixedly connected with a turntable guard plate 406 through a connecting screw 405, so that the dustproof effect can be achieved, and the synchronous turntable 403 can be prevented from falling off; in addition, the shaft body of the turntable shaft 401 is provided with a shaft shoulder for abutting against the inner end of the inner ring of the rotating bearing 402, the center of the synchronous turntable 403 is provided with a step through hole for mounting and abutting against the inner end of the outer ring of the rotating bearing 402, the outer end surface of the rotating bearing 402 is provided with a hole spring retainer 408, the counterbore wall of the step through hole of the synchronous turntable 403 is provided with an annular clamping groove clamped by the spring retainer 408, the inner plate surface of the turntable protective plate 406 is coaxially fixed with a top sleeve 407 for abutting against the outer end of the inner ring of the rotating bearing 402, and the whole synchronous turntable 403 is ensured to be stably connected.
When the lifting appliance for clamping cylindrical articles is implemented, a driving source is positioned on the mechanical clamping arms 3, and synchronously moves under the driving of the corresponding driving mechanism 301 through the driving sliders 303 on the plurality of mechanical clamping arms 3, and simultaneously the linkage rods 5 between two adjacent mechanical clamping arms 3 move along with the mechanical clamping arms, namely the cross included angle between the two linkage rods 5 is increased, and then the plurality of mechanical clamping arms 3 move along the corresponding linear sliding mechanisms 2 under the action of the linkage rods 5, so that the plurality of mechanical clamping arms 3 synchronously clamp cylindrical weights or loosen the cylindrical weights; it should be noted that, during the movement of the sliding trolley 202, the synchronization link 404 and the synchronization dial 403 of the synchronization link mechanism 4 can further improve the synchronization degree of the spreader.
The present invention is not described in detail in the prior art.
Claims (10)
1. A hoist for pressing from both sides get cylindrical article, characterized by: the cylindrical object clamping device comprises an upper arm support (6), wherein a centering connecting mechanism (7) correspondingly connected with an external crane is arranged at the top end of the upper arm support (6), and a hoisting device capable of clamping cylindrical objects is arranged on the bottom end surface of the upper arm support (6).
2. The hoist for gripping cylindrical articles as claimed in claim 1, wherein: the hoisting device comprises a lower arm support (1), a linear sliding mechanism (2), a mechanical arm support (3) and a synchronous connecting rod mechanism (4), wherein the center of the top end surface of the lower arm support (1) is correspondingly connected with an upper arm support (6); at least three linear sliding mechanisms (2) are uniformly distributed on the lower arm support (1), the moving directions of the linear sliding mechanisms (2) face to the central position of the lower arm support (1), and each linear sliding mechanism (2) is provided with a mechanical clamping arm (3) which can move along with a sliding part and synchronously clamp or release; the center of the lower arm support (1) is provided with a synchronous connecting rod mechanism (4) which is correspondingly connected with the plurality of linear sliding mechanisms (2) and can ensure that the plurality of linear sliding mechanisms (2) slide synchronously.
3. The hoist for gripping cylindrical articles as claimed in claim 2, wherein: the inner part of the lower arm support (1) is provided with a sliding cavity, the linear sliding mechanism (2) comprises a sliding rail assembly (201) and a sliding trolley (202), the sliding rail assembly (201) is composed of two clamping plates (20101) with parallel plate surfaces, the corresponding ends of the two clamping plates (20101) are detachably and fixedly connected through end plates (20102), the inner plate surfaces of the two clamping plates (20101) are symmetrically provided with two rail grooves (20103) along the axial direction of the clamping plates (20101), and the rail grooves (20103) are correspondingly and slidably connected with the sliding trolley (202).
4. The hoist for gripping cylindrical articles as claimed in claim 3, wherein: the sliding trolley (202) comprises a trolley frame plate (20201) which is horizontally arranged, a plurality of lower rollers (20202) which can be abutted and rolled with the lower groove wall of the corresponding track groove (20103) and two upper rollers (20203) which can be abutted and rolled with the upper groove wall of the corresponding track groove (20103) are symmetrically arranged on two sides of the trolley frame plate (20201), and the trolley frame plate (20201) is correspondingly connected with the mechanical clamping arm (3).
5. The hoist for gripping cylindrical articles as claimed in claim 2, wherein: the mechanical clamping arm (3) comprises a driving mechanism (301), a screw (302), a driving sliding block (303), a bearing seat (304), a sliding rod (305) and a driven sliding block (306), the driving end of the driving mechanism (301) is correspondingly connected with the head end of the screw (302), the head end rod body of the screw (302) is correspondingly connected with a linear sliding mechanism (2), the rod body of the screw (302) is provided with the driving sliding block (303), the tail end of the screw (302) is correspondingly matched and connected with the bearing seat (304), the bottom surface of the bearing seat (304) is provided with a positioning seat (3012) correspondingly connected with the head end of the sliding rod (305), the sliding rod (305) and the screw (302) are correspondingly coaxial, the rod body of the sliding rod (305) is provided with the driven sliding block (306) and a claw piece (307) used for clamping cylindrical heavy objects, the driven sliding block (306) is correspondingly connected with the driving sliding block (303) through a connecting, and a linkage rod (5) is hinged between the driven sliding block (306) and the fixing seat (309) of the two adjacent clasping claws.
6. The hoist for gripping cylindrical articles as claimed in claim 5, wherein: a protective shell (3010) is arranged outside the screw rod (302), and a wire slot (3011) is formed between the tail end of the protective shell (3010) and the fixed seat (309).
7. The hoist for gripping cylindrical articles as claimed in claim 2, wherein: the synchronous connecting rod mechanism (4) comprises a turntable shaft (401), a rotating bearing (402), a synchronous turntable (403) and a synchronous connecting rod (404), the turntable shaft (401) is fixedly arranged at the center of the bottom surface of the lower arm support (1), the rotating bearing (402) is sleeved on the shaft body of the turntable shaft (401), the synchronous turntable (403) is sleeved on the outer wall of the outer ring of the rotating bearing (402), a plurality of synchronous connecting rods (404) are hinged to the outer edge of the synchronous turntable (403), and the other end of each synchronous connecting rod (404) is hinged to the corresponding linear sliding mechanism (2).
8. The hoist for gripping cylindrical articles as claimed in claim 7, wherein: the axle body of carousel axle (401) is equipped with and is used for conflicting rolling bearing (402) inner shaft shoulder, synchronous carousel (403) central authorities are equipped with and are used for the installation and conflict rolling bearing (402) outer lane inner step through-hole, the outer terminal surface of rolling bearing (402) is equipped with circlip (408), the counter bore pore wall of synchronous carousel (403) step through-hole is equipped with the annular groove that adaptation circlip (408) card was gone into, the coaxial top cover (407) that are used for conflicting rolling bearing (402) inner circle outer end that is fixed with of interior face of carousel backplate (406).
9. The hoist for gripping cylindrical articles as claimed in claim 2, wherein: the centering connecting mechanism (7) comprises a supporting plate (701), a hoisting pulley (703) and a centering shaft (704); the two supporting plates (701) are arranged, the two supporting plates (701) are symmetrically arranged on the outer wall surface of the upper arm support (6), the center of the plate surface of each supporting plate (701) is fixedly connected with the corresponding side surface of the corresponding supporting rod (602), the corresponding ends of the two supporting plates (701) are fixedly connected through end cover plates (702), and two hoisting pulleys (703) are symmetrically arranged on the outer plate surfaces of the two end cover plates (702); the centering shaft (704) is coaxially fixed on the top end face of the upper arm support (6), a plurality of clamping grooves (70401) which are axially arranged along the centering shaft (704) and penetrate through the top end face of the centering shaft (704) are uniformly formed in the shaft wall of the centering shaft (704), and the centering shaft (704) is correspondingly matched and spliced with a centering sleeve (8) arranged on an external crane.
10. The self-centering anti-rotation clasping clip of claim 9, wherein: an image acquisition device (804) is installed at the top end of the centering sleeve (8), and the centering sleeve (8) is in transmission connection with a rotating motor capable of driving the centering sleeve (8) to rotate by taking the axis of the centering sleeve as the center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315649.2A CN112938748A (en) | 2021-03-24 | 2021-03-24 | Lifting appliance for clamping cylindrical articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315649.2A CN112938748A (en) | 2021-03-24 | 2021-03-24 | Lifting appliance for clamping cylindrical articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112938748A true CN112938748A (en) | 2021-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110315649.2A Pending CN112938748A (en) | 2021-03-24 | 2021-03-24 | Lifting appliance for clamping cylindrical articles |
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| Country | Link |
|---|---|
| CN (1) | CN112938748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115744643A (en) * | 2022-09-27 | 2023-03-07 | 山东德鲁克起重机集团有限公司 | Automatic double-beam bridge type manipulator crane and using method thereof |
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Application publication date: 20210611 |