CN116853942A - Lifting assembly for crane - Google Patents
Lifting assembly for crane Download PDFInfo
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- CN116853942A CN116853942A CN202310933316.5A CN202310933316A CN116853942A CN 116853942 A CN116853942 A CN 116853942A CN 202310933316 A CN202310933316 A CN 202310933316A CN 116853942 A CN116853942 A CN 116853942A
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- assembly
- frame
- sliding
- fixedly connected
- power wheel
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- 230000000712 assembly Effects 0.000 claims abstract description 16
- 238000000429 assembly Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 210000000078 claw Anatomy 0.000 claims description 48
- 238000001125 extrusion Methods 0.000 claims description 12
- 230000008093 supporting effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 20
- 230000002457 bidirectional effect Effects 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
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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
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/04—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports with lifting beams, e.g. slewable beams, carrying load-engaging elements, e.g. magnets, hooks
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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
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/08—Runners; Runner bearings
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/10—Undercarriages or bogies, e.g. end carriages, end bogies
Abstract
The invention provides a hoisting assembly for a crane, and relates to the technical field of hoisting assemblies. The travelling wheel assembly is used on the double-beam crane and comprises a group of beam bodies and travelling frames which are arranged on the double-beam crane in parallel, wherein the tops of the beam bodies are provided with sliding rails, and travelling wheel assemblies are arranged at the bottoms of the travelling frames and close to the two ends of the travelling frames; the travelling wheel assembly is in sliding connection with the sliding rail, and is in friction contact with the side surface of the sliding rail; the braking mechanism comprises a stop pawl assembly and a stop pawl driving piece, wherein the stop pawl assembly is rotationally connected to the bottom of the walking frame, the stop pawl driving piece is fixedly connected to the bottom of the walking frame, and the action end of the stop pawl driving piece is in transmission connection with the stop pawl assembly. The fixed of stopping of walking frame optional position is realized, and the walking frame is difficult for taking place to rock and local displacement when lifting by crane work, guarantees the security of construction, improves the performance of hoist.
Description
Technical Field
The invention relates to the technical field of lifting components, in particular to a lifting component for a crane.
Background
The double-beam crane mainly comprises a ground walking part, a frame body part and a lifting assembly, wherein the ground walking part can select a track-free walking structure, the frame body part plays a supporting role by means of steel structure strength, and the lifting assembly is the most core part and directly determines the working performance of the crane.
The applicant has found that, through searching, chinese patent discloses a beam crane with an overhead angle-shaped trolley, the application number of which is 201610566849.4, the two ends of the main beam are fixedly connected with the end beams, the upper cover plate of the main beam extends out of the main web plate of the main beam and the auxiliary web plate of the main beam to form an outer edge beam plate, the angle-shaped trolley is arranged on the main beam, the upper surface of the upper cover plate of the main beam is welded with a square rail, the angle-shaped trolley rolls along the square rail, and the two ends of the square rail are welded with running stoppers.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a lifting assembly for a crane, which solves the problems that the crane is mainly dependent on self-locking of a power piece to fix the position and has low safety performance when the crane is stopped at any position in the middle.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the lifting assembly is used for a crane and comprises a group of beam bodies and travelling frames which are arranged on the double-beam crane in parallel, wherein the top of each beam body is provided with a sliding track, the bottom of each travelling frame is provided with travelling wheel assemblies close to two ends, the bottom of each travelling frame is provided with a power wheel assembly which is positioned on the inner side of each travelling wheel assembly, the middle part of each travelling frame is fixedly connected with a connecting assembly, the bottom of each connecting assembly is fixedly connected with a wire twisting roller, a self-locking motor and a transmission assembly which is connected with the wire twisting roller and the self-locking motor, the lower part of each wire twisting roller stretches out of a lifting rope, and the bottom of each lifting rope is connected with a lifting hook through a connector;
the walking wheel assembly is in sliding connection with the sliding rail, and the power wheel assembly is in friction contact with the side surface of the sliding rail;
the braking mechanism comprises a stop pawl assembly and a stop pawl driving piece, wherein the stop pawl assembly is rotationally connected to the bottom of the walking frame, the stop pawl driving piece is fixedly connected to the bottom of the walking frame, and the action end of the stop pawl driving piece is in transmission connection with the stop pawl assembly.
Preferably, the locking claw assembly comprises a connecting frame fixedly connected with the walking frame, a brake arm is rotationally connected to the bottom of the connecting frame, an inner arc surface matched with the power wheel assembly is arranged on the inner side of the brake arm, an arc claw is connected to one end portion of the brake arm through an elastic portion, an arc surface matched with the power wheel assembly is arranged on the inner side of the arc claw, and an extrusion surface parallel to the side surface of the sliding rail is arranged on the end portion of the arc claw.
Preferably, the locking claw driving piece comprises a cross column and a connecting rod, both ends of the cross column are fixedly connected with the walking frame, one side of the cross column is fixedly connected with a connecting seat, the bottom of the connecting seat is fixedly connected with a bidirectional hydraulic cylinder, one end of the connecting rod is movably connected with the end part of the bidirectional hydraulic cylinder, and the other end of the connecting rod is movably connected with the brake arm.
Preferably, the top of the sliding rail is provided with a sliding groove, the left side and the right side of the sliding groove are respectively provided with a step part, and the side edge of the top of the sliding groove is provided with an inclined part.
Preferably, the walking wheel assembly comprises a sliding frame, the top of sliding frame is provided with long slotted hole, the both ends department of walking frame all is provided with the crossbeam, sliding frame and crossbeam sliding connection, and the top of crossbeam is provided with set screw, set screw passes the top threaded connection of long slotted hole and crossbeam, the bottom fixedly connected with backup pad of sliding frame, the bottom fixedly connected with of backup pad two sets of parallel arrangement's curb plate frame, the inboard of curb plate frame is through gyro wheel installed part swing joint has the gyro wheel body, the lateral surface fixedly connected with locating plate of curb plate frame, the bottom of locating plate is provided with the guide slope that corresponds with the tilting part.
Preferably, the power wheel assembly comprises a mounting plate fixed at the bottom of the walking frame, the bottom of the mounting plate is rotationally connected with a power wheel body, the top of the mounting plate is fixedly connected with a power box, and the output end of the power box is in transmission connection with the power wheel body.
Preferably, the connector comprises two groups of limiting frames which are arranged in parallel, the inner sides of the limiting frames are rotationally connected with a large wheel and a small wheel, the large wheel is connected with a lifting rope, and the small wheel is connected with a locking rope at the top of the lifting hook.
Preferably, the power wheel assembly is provided with four groups and is distributed at four corners of the walking frame, the locking claw assemblies are provided with four groups and are in one-to-one correspondence with the power wheel assembly, the locking claw driving pieces are provided with two groups, and one group of locking claw driving pieces control the two locking claw assemblies located on the same side to act.
The invention provides a lifting assembly for a crane. The beneficial effects are as follows:
1. according to the invention, the stop claw driving piece and the movably connected stop claw assembly are arranged, so that when a crane needs to stop, the stop claw driving piece is controlled to act, the stop claw assembly is pulled inwards to be clung to the power wheel assembly, the braking effect is realized, the stop fixing of any position of the travelling frame is realized, the travelling frame is not easy to shake and partially displace when the crane is lifted, the construction safety is ensured, and the performance of the crane is improved.
Further the tip of brake arm passes through the arc claw of elastic part connection, the inboard and the power wheel cooperation of arc claw, the brake arm action time, also can control the inboard and the power wheel body contact of arc claw, owing to the existence of elastic part, can not take place very big clamping force between, but the power wheel body is when rotating, can drive arc claw towards being close to slip track one side and remove, when making the signal and sending, the brake arm does not brake the power wheel body in the short distance, the power wheel body will carry the arc claw to power wheel body and slip track side the space department, make the tip extrusion face of arc claw and slip track between produce huge extrusion force, and this extrusion force can be along with the continuation rotation of power wheel body, be geometrical multiple's increase, finally realize locking, fix the walking frame, the self-locking structure that this structure presents is fixed very firm, the braking distance has been shortened greatly, moreover can be worn and torn by the inner arc face of brake arm, become smooth, when can't realize the braking, play final safety barrier, guarantee the security of hoist use.
2. According to the invention, through improving the structure of the sliding rail and the travelling wheel assembly, the sliding rail and the travelling wheel assembly can bear larger load, when the roller body is pressed and deformed, the side plate frame can be directly pressed on the step part to play a supporting role, the roller body is not damaged continuously, a self-protection function is played, when the side plate frame is contacted with the step part, the sliding is changed from original rolling to sliding, the sliding friction force can be increased, the travelling speed of the power wheel assembly can be obviously slowed down under the same gear (the same power), the high-load slow running travelling frame is realized, the low-load running speed can be faster, the running safety of the device is ensured, the left-right deflection movement of the travelling wheel assembly can be avoided by arranging the mutually matched inclined part and the guide inclined plane, the inclined force is aggravated, the damage to the side surface of the sliding rail is generated, and the service life of the device can be prolonged by the design of the structure.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the front structure of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a partial top view of the present invention;
FIG. 5 is a schematic view of a walking frame of the present invention;
FIG. 6 is an enlarged view of FIG. 5 at B;
FIG. 7 is a partial perspective view of the present invention;
FIG. 8 is a schematic perspective view of a road wheel assembly of the present invention;
FIG. 9 is an enlarged view of FIG. 2 at A;
fig. 10 is a perspective view of a hook structure.
Wherein, 1, a locking claw driving piece; 101. a cross column; 102. a connecting seat; 103. a bidirectional hydraulic cylinder; 104. a connecting rod; 2. a beam body; 3. a sliding rail; 31. a sliding groove; 32. a step portion; 33. an inclined portion; 4. a walking frame; 5. a road wheel assembly; 51. a sliding frame; 52. a long slot; 53. a support plate; 54. a side plate frame; 55. a roller mounting member; 56. a roller body; 57. a positioning plate; 58. a guide slope; 6. a power wheel assembly; 6. a power wheel assembly; 61. a mounting plate; 62. a power wheel body; 63. a power box; 7. a lifting hook; 8. a dog assembly; 8. a dog assembly; 81. a connecting frame; 82. a brake arm; 83. an inner arcuate surface; 84. an elastic part; 85. arc-shaped claws; 86. extruding the surface; 9. a connection assembly; 10. a wire twisting roller; 11. a self-locking motor; 12. a transmission assembly; 13. a hanging rope; 14. a connector; 14. a connector; 141. a large wheel; 142. a small wheel; 143. and a limiting frame.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1-10, the embodiment of the invention provides a lifting assembly for a crane, which is used on a double-beam crane, and comprises a group of beam bodies 2 and travelling frames 4 which are arranged in parallel on the double-beam crane, wherein the travelling frames 4 slide along the length direction of the beam bodies 2, the tops of the beam bodies 2 are provided with sliding rails 3, the bottoms of the travelling frames 4 are close to both ends and are provided with travelling wheel assemblies 5, the bottoms of the travelling frames 4 are provided with power wheel assemblies 6 which are positioned at the inner sides of the travelling wheel assemblies 5, the side surfaces of the power wheel assemblies 6 roll and walk with the beam bodies 2, so that the side surfaces of the power wheel assemblies 6 can be provided with anti-skid lines, the middle part of the travelling frames 4 is fixedly connected with a connecting assembly 9, the bottoms of the connecting assembly 9 are fixedly connected with a stranded wire roller 10, a self-locking motor 11 and a transmission assembly 12 which is connected with the stranded wire roller 10 and the self-locking motor 11, the transmission assembly 12 adopts a gear reduction mechanism for reducing the rotation speed of the self-locking motor 11 and increasing torque, the lower part of the stranded wire 10 extends out of a lifting rope 13, and the bottom of the lifting rope 13 is connected with a lifting hook 7 through a connector 14;
when the crane is lifted, the self-locking motor 11 drives the wire twisting roller 10 to rotate, the lifting rope 13 is driven to move up and down, the effect of lifting the goods is realized, and the lifting hook 7 is used for hanging the goods;
the walking wheel assembly 5 is in sliding connection with the sliding rail 3, and the power wheel assembly 6 is in friction contact with the side surface of the sliding rail 3;
the walking wheel assembly 5 is matched with the sliding track 3 to realize the functions of sliding and guiding, the power wheel assembly 6 is driven by a power piece of the power wheel assembly, is in friction contact with the side surface of the sliding track 3 to realize the purpose of driving the walking frame 4 to move, and in order to increase the friction force between the walking wheel assembly 5 and the sliding track 3, the friction coefficient between the walking wheel assembly 5 and the sliding track 3 can be properly increased, and according to the structural improvement, the structure of a gear and a rack is adopted, so that the invention also belongs to the protection scope of the invention.
The braking mechanism is used for braking the power wheel assembly 6 and comprises a stop claw assembly 8 and a stop claw driving piece 1, wherein the stop claw assembly 8 is rotationally connected to the bottom of the walking frame 4, the stop claw driving piece 1 is fixedly connected to the bottom of the walking frame 4, and the action end of the stop claw driving piece 1 is in transmission connection with the stop claw assembly 8.
The device is arranged on a double-beam crane, and by means of the ground travelling mechanism of the double-beam crane, the device is carried to longitudinally move, the power wheel assembly 6 is matched with the side face of the sliding track 3, so that the device transversely moves, and the lifting rope 13 carries the lifting hook 7 to move up and down, so that the effect of lifting goods is realized.
Referring to fig. 5 and 6, in this embodiment, the locking claw assembly 8 includes a connecting frame 81 fixedly connected with the walking frame 4, a brake arm 82 is rotatably connected to the bottom of the connecting frame 81, an inner arc surface 83 matched with the power wheel assembly 6 is provided on the inner side of the brake arm 82, an arc claw 85 is connected to one end of the brake arm 82 through an elastic portion 84, an arc surface matched with the power wheel assembly 6 is provided on the inner side of the arc claw 85, and an extrusion surface 86 parallel to the side surface of the sliding rail 3 is provided on the end of the arc claw 85.
The locking claw assembly 8 is driven by the locking claw driving piece 1 to act, namely the locking arm 82 can be pulled inwards to rotate around the connecting point between the connecting frame 81 and the locking arm 82, the inner arc surface 83 on the inner side of the locking arm 82 is attached to the power wheel assembly 6, the friction braking effect is achieved, if the friction contact surface is worn, when failure occurs or the braking effect is poor, the moving distance of the power wheel assembly 6 is increased, the arc claw 85 can be carried to move towards the direction close to the sliding track 3, the extrusion surface 86 on the end part of the arc claw 85 is contacted with the sliding track 3, the braking effect is achieved through extrusion (the superposition effect is achieved through the braking effect produced at the position and the braking effect produced by the inner arc surface 83 on the inner side of the locking arm 82), the power wheel assembly 6 continues to rotate, the extrusion force on the side surface of the arc claw 85 and the sliding track 3 can be increased in geometric multiple, the braking effect is guaranteed, the structure can accurately control the braking distance, and after the operation personnel are trained, the operation personnel can accurately control the position.
Referring to fig. 4, in this embodiment, the pawl driving member 1 includes a cross column 101 and a connecting rod 104, both ends of the cross column 101 are fixedly connected with the walking frame 4, one side of the cross column 101 is fixedly connected with a connecting seat 102, the bottom of the connecting seat 102 is fixedly connected with a bidirectional hydraulic cylinder 103, one end of the connecting rod 104 is movably connected with an end of the bidirectional hydraulic cylinder 103, and the other end of the connecting rod 104 is movably connected with the brake arm 82.
The transverse column 101 and the connecting seat 102 are both structures with connecting functions, the bidirectional hydraulic cylinder 103 acts and can carry the connecting rod 104 to pull inwards, and then the brake arm 82 is driven to pull inwards, so that braking is realized, and the bidirectional hydraulic cylinder 103 can provide sufficient braking force to ensure the braking effect.
Referring to fig. 1 and 9, in the present embodiment, a slide groove 31 is provided at the top of a slide rail 3, stepped portions 32 are provided on both left and right sides of the slide groove 31, and inclined portions 33 are provided at the top side edges of the slide groove 31.
The sliding tray 31 cooperates with the width of the roller body 56, the roller body 56 slides in the sliding tray 31, the function of limiting the position of the roller body 56 is achieved, the guiding function is achieved, the step portion 32 cooperates with the side plate frame 54, the outer side of the roller body 56 is made of rubber, when the load is overlarge, the outer side of the roller body is deformed, the side plate frame 54 contacts with the step portion 32, the auxiliary supporting function is achieved, meanwhile sliding resistance is increased, the inclined portion 33 cooperates with the guide inclined surface 58 arranged at the bottom of the positioning plate 57, the roller body 56 is kept at the center position, lateral inclined force is avoided, abrasion is reduced, the service life of the device is prolonged, and safety is improved.
Referring to fig. 8 and 9, in this embodiment, the travelling wheel assembly 5 includes a sliding frame 51, a long slot hole 52 is provided at the top of the sliding frame 51, cross beams are provided at both ends of the travelling frame 4, the sliding frame 51 is slidably connected with the cross beams, positioning screws are provided at the top of the cross beams, the positioning screws penetrate through the long slot hole 52 and are in threaded connection with the top of the cross beams, a supporting plate 53 is fixedly connected with the bottom of the sliding frame 51, two sets of side plate frames 54 are fixedly connected with the bottom of the supporting plate 53, roller bodies 56 are movably connected with the inner sides of the side plate frames 54 through roller mounting members 55, positioning plates 57 are fixedly connected with the outer side surfaces of the side plate frames 54, and guide inclined planes 58 corresponding to the inclined portions 33 are provided at the bottom of the positioning plates 57.
The setting of sliding frame 51 structure can adjust the mounted position between walking wheel assembly 5 and the walking frame 4, after the adjustment is accomplished, adopt set screw to pass long slotted hole 52 and the top threaded connection of crossbeam, set screw's top is pressed at the top surface of sliding frame 51, realize fixed purpose, backup pad 53 plays the linking effect, the holding surface at its top sets up and slightly widthes than sliding frame 51, play fine supporting effect, gyro wheel body 56 sets up the multiunit side by side, play the effect of support jointly (this embodiment adopts 3 groups, specifically make the load quantity determine according to the application), the distance between two sets of parallel arrangement's curb plate frame 54 is determined according to the position of step 32, realize that step 32 is located under the curb plate frame 54.
Referring to fig. 7, the power wheel assembly 6 includes a mounting plate 61 fixed at the bottom of the walking frame 4, a power wheel body 62 is rotatably connected to the bottom of the mounting plate 61, a power box 63 is fixedly connected to the top of the mounting plate 61, and an output end of the power box 63 is in transmission connection with the power wheel body 62.
The power box 63 is internally provided with a power structure, and the power wheel bodies 62 on two sides generate the same rotation number of turns through a transmission structure (adopting reduction gear transmission), so that the problem of deviation is avoided, and the side surfaces of the power wheel bodies 62 are provided with lines for preventing slipping.
The connector 14 comprises two groups of limiting frames 143 which are arranged in parallel, the inner sides of the limiting frames 143 are rotatably connected with a large wheel 141 and a small wheel 142, the large wheel 141 is connected with the lifting rope 13, and the small wheel 142 is connected with the locking rope at the top of the lifting hook 7.
Referring to fig. 10, in this embodiment, the connector 14 mainly serves to connect the upper hoist rope 13 with the lower hook 7, and the arrangement of the large wheel 141 and the small wheel 142 can ensure smooth upward movement of the hoist rope 13.
The power wheel assembly 6 is provided with four groups which are distributed at four corners of the walking frame 4, the stop jaw assemblies 8 are provided with four groups which are in one-to-one correspondence with the power wheel assembly 6, the stop jaw driving pieces 1 are provided with two groups, and one group of the stop jaw driving pieces 1 controls the action of the two stop jaw assemblies 8 positioned at the same side.
The power wheel assembly 6 is provided with four groups, and the drive is more steady, and dog subassembly 8 and power wheel assembly 6 one-to-one, and when moving forward, the arc claw 85 of place ahead just can play the effect, and when moving backward, the arc claw 85 of rear plays the effect, sets up like this and can both-way can both play the effect of braking (the braking effect that the inner arc face 83 of brake arm inboard played, both-way removal all can produce), and the brake arm synchronous motion of both sides can be driven to the bidirectional hydraulic cylinder 103 in the dog subassembly 8, and the synchronous braking of power wheel assembly 6 around.
Working principle: the stop dog driving piece 1 is matched with the stop dog assembly 8 which is movably connected, when a crane needs to be stopped, the stop dog driving piece 1 is controlled to act, the stop dog assembly 8 is pulled inwards to be clung to the power wheel assembly 6, a braking effect is achieved, stop fixation of any position of a travelling frame is achieved, when lifting work is carried out, the travelling frame 4 is not easy to shake and partially displace, construction safety is guaranteed, and performance of the crane is improved.
Specifically, the bidirectional hydraulic cylinder 103 works to drive the brake arm 82 to rotate firstly, the inner arc surface 83 of the inner side of the brake arm 82 is matched with the outer side surface of the power wheel body 62 to realize the braking effect, if the braking effect is bad and the sliding (the inertia is very large under heavy load) is generated in the braking process, the inner side of the arc claw 85 is matched with the power wheel body 62, when the brake arm 82 acts, the inner side of the arc claw 85 is controlled to be contacted with the power wheel body 62, and due to the existence of the elastic part 84 (the elastic part 84 adopts a bending plate, and can be stretched or shortened by utilizing the deformation of the elastic part), no large clamping force can be generated between the elastic part and the power wheel body 62, the arc claw 85 can be driven to move towards one side close to the sliding track 3, when a signal is sent out, the braking arm 82 does not brake the power wheel body 62 in a short distance, the power wheel body 62 can carry the arc claw 85 to move to a gap between the power wheel body 62 and the side face of the sliding track 3, so that a huge extrusion force is generated between the extrusion surface 86 of the end part of the arc claw 85 and the sliding track 3, the extrusion force can be increased along with the continuous rotation of the power wheel body 62 to form a geometric multiple, the locking is finally realized, the walking frame 4 is fixed, the structure can greatly shorten the braking distance, and the braking arm is invalid, so that a final safety barrier is played when the braking cannot be realized, and the use safety of the crane is ensured.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A lift by crane subassembly for on the double-beam crane, including a set of roof beam body (2) and walking frame (4) of parallel arrangement on the double-beam crane, its characterized in that: the lifting device is characterized in that a sliding track (3) is arranged at the top of the beam body (2), travelling wheel assemblies (5) are arranged at the bottom of the travelling frame (4) and close to two ends of the travelling frame, a power wheel assembly (6) is arranged at the bottom of the travelling frame (4) and positioned on the inner side of the travelling wheel assemblies (5), a connecting assembly (9) is fixedly connected with the middle part of the travelling frame (4), a wire twisting roller (10), a self-locking motor (11) and a transmission assembly (12) for connecting the wire twisting roller (10) and the self-locking motor (11) are fixedly connected to the bottom of the connecting assembly (9), a lifting rope (13) extends out from the lower part of the wire twisting roller (10), and a lifting hook (7) is connected to the bottom of the lifting rope (13) through a connector (14);
the travelling wheel assembly (5) is in sliding connection with the sliding rail (3), and the power wheel assembly (6) is in friction contact with the side surface of the sliding rail (3);
the braking mechanism is used for braking the power wheel assembly (6), and comprises a stop jaw assembly (8) and a stop jaw driving piece (1), wherein the stop jaw assembly (8) is rotationally connected to the bottom of the walking frame (4), the stop jaw driving piece (1) is fixedly connected to the bottom of the walking frame (4), and the action end of the stop jaw driving piece (1) is in transmission connection with the stop jaw assembly (8);
the locking claw assembly (8) comprises a connecting frame (81) fixedly connected with the walking frame (4), a brake arm (82) is rotationally connected to the bottom of the connecting frame (81), an inner arc-shaped surface (83) matched with the power wheel assembly (6) is arranged on the inner side of the brake arm (82), an arc-shaped claw (85) is connected to one end portion of the brake arm (82) through an elastic portion (84), an arc-shaped surface matched with the power wheel assembly (6) is arranged on the inner side of the arc-shaped claw (85), and an extrusion surface (86) parallel to the side surface of the sliding track (3) is arranged on the end portion of the arc-shaped claw (85).
2. A hoisting assembly for a crane according to claim 1, characterized in that: the utility model provides a stop claw driving piece (1) includes diaphragm (101), connecting rod (104), the both ends of diaphragm (101) all with walking frame (4) fixed connection, one side fixedly connected with connecting seat (102) of diaphragm (101), the bottom fixedly connected with two-way pneumatic cylinder (103) of connecting seat (102), the one end of connecting rod (104) with the tip swing joint of two-way pneumatic cylinder (103), the other end and brake arm (82) swing joint of connecting rod (104).
3. A hoisting assembly for a crane according to claim 1, characterized in that: the top of the sliding track (3) is provided with a sliding groove (31), the left side and the right side of the sliding groove (31) are respectively provided with a step part (32), and the side edge of the top of the sliding groove (31) is provided with an inclined part (33).
4. A lifting assembly for a crane according to claim 3, characterized in that: the walking wheel assembly (5) comprises a sliding frame (51), long slotted holes (52) are formed in the top of the sliding frame (51), cross beams are arranged at two ends of the walking frame (4), the sliding frame (51) is in sliding connection with the cross beams, positioning screws are arranged at the tops of the cross beams, the positioning screws penetrate through the long slotted holes (52) and are in threaded connection with the tops of the cross beams, a supporting plate (53) is fixedly connected to the bottom of the sliding frame (51), two groups of side plate frames (54) are fixedly connected to the bottom of the supporting plate (53), roller bodies (56) are movably connected to the inner sides of the side plate frames (54) through roller mounting pieces (55), positioning plates (57) are fixedly connected to the outer side faces of the side plate frames (54), and guide inclined planes (58) corresponding to the inclined portions (33) are arranged at the bottoms of the positioning plates (57).
5. A hoisting assembly for a crane according to claim 1, characterized in that: the power wheel assembly (6) comprises a mounting plate (61) fixed at the bottom of the walking frame (4), the bottom of the mounting plate (61) is rotationally connected with a power wheel body (62), the top of the mounting plate (61) is fixedly connected with a power box (63), and the output end of the power box (63) is in transmission connection with the power wheel body (62).
6. A hoisting assembly for a crane according to claim 1, characterized in that: the connector (14) comprises two groups of limiting frames (143) which are arranged in parallel, the inner sides of the limiting frames (143) are rotatably connected with a large wheel (141) and a small wheel (142), the large wheel (141) is connected with a lifting rope (13), and the small wheel (142) is connected with a locking rope at the top of the lifting hook (7).
7. A hoisting assembly for a crane according to claim 1, characterized in that: the power wheel assembly (6) is provided with four groups and is distributed at four corners of the walking frame (4), the stop jaw assemblies (8) are provided with four groups and are in one-to-one correspondence with the power wheel assembly (6), the stop jaw driving pieces (1) are provided with two groups, and one group of the stop jaw driving pieces (1) control the action of the two stop jaw assemblies (8) located on the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310933316.5A CN116853942A (en) | 2023-07-27 | 2023-07-27 | Lifting assembly for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310933316.5A CN116853942A (en) | 2023-07-27 | 2023-07-27 | Lifting assembly for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116853942A true CN116853942A (en) | 2023-10-10 |
Family
ID=88230514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310933316.5A Pending CN116853942A (en) | 2023-07-27 | 2023-07-27 | Lifting assembly for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116853942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117509446A (en) * | 2024-01-05 | 2024-02-06 | 河南省大方重型机器有限公司 | Energy-saving environment-friendly double-beam crane |
-
2023
- 2023-07-27 CN CN202310933316.5A patent/CN116853942A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117509446A (en) * | 2024-01-05 | 2024-02-06 | 河南省大方重型机器有限公司 | Energy-saving environment-friendly double-beam crane |
| CN117509446B (en) * | 2024-01-05 | 2024-04-02 | 河南省大方重型机器有限公司 | Energy-saving environment-friendly double-beam crane |
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