CN112027931B - Trolley with built-in pulley block - Google Patents
Trolley with built-in pulley block Download PDFInfo
- Publication number
- CN112027931B CN112027931B CN202010817637.5A CN202010817637A CN112027931B CN 112027931 B CN112027931 B CN 112027931B CN 202010817637 A CN202010817637 A CN 202010817637A CN 112027931 B CN112027931 B CN 112027931B
- Authority
- CN
- China
- Prior art keywords
- boom
- rope
- lifting
- pulley
- pulley group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 92
- 238000003825 pressing Methods 0.000 claims description 53
- 239000000725 suspension Substances 0.000 claims description 47
- 229910052742 iron Inorganic materials 0.000 claims description 41
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008092 positive effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XEEYBQQBJWHFJM-OUBTZVSYSA-N iron-52 Chemical compound [57Fe] XEEYBQQBJWHFJM-OUBTZVSYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-IGMARMGPSA-N iron-56 Chemical compound [56Fe] XEEYBQQBJWHFJM-IGMARMGPSA-N 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- XEEYBQQBJWHFJM-YPZZEJLDSA-N iron-54 Chemical group [54Fe] XEEYBQQBJWHFJM-YPZZEJLDSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
-
- 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
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/04—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs the effective length of which is variable in operation, e.g. longitudinally displaceable, extensible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
内置滑轮组吊运车，包括底座和吊臂总成，其中吊臂总成铰接安装在底座上，包括操控手柄，吊臂总成的前端设有吊钩，在吊臂总成和底座之间还铰接有升降油缸.本发明的积极效果在于：它具有避免超重起吊的优点，由于其起重的动力由液压系统提供，因此，在吊装重量不明的货物时，既使货物的重量超过液压系统的负荷能力，液压系统也会自动泄压排油，不会出现有吊机超载起吊时将电动卷扬机的电机烧坏的情况。所述卷扬机还省略了卷筒、电机、减速机、制动机构和排绳器等机构，结构简单、体积小、维修方便。
The internal pulley block hoisting vehicle comprises a base and a boom assembly, wherein the boom assembly is hingedly mounted on the base and comprises a control handle, a hook is provided at the front end of the boom assembly, and a lifting cylinder is hingedly connected between the boom assembly and the base. The positive effect of the present invention is that it has the advantage of avoiding overweight lifting. Since the lifting power is provided by the hydraulic system, when lifting goods of unknown weight, even if the weight of the goods exceeds the load capacity of the hydraulic system, the hydraulic system will automatically release pressure and discharge oil, and the motor of the electric winch will not be burned out when the crane is overloaded. The winch also omits the drum, motor, reducer, brake mechanism, rope guide and other mechanisms, and has a simple structure, small size and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a trolley with a built-in pulley block.
Background
When carrying out goods hoisting transportation, the existing crane is generally fixed in one place to carry out hoisting operation, and then the subsequent transportation of the goods is completed by rotating the suspension arm or by other transportation equipment. When the crane arm is rotated to transport cargoes, the crane arm cannot adapt to long-distance transportation, meanwhile, the crane arm has higher space requirement on the operating environment, and when the cargoes are transported by other transportation equipment, the cargoes are required to be unloaded onto the transportation equipment, and then the cargoes are required to be loaded and unloaded secondarily after the transportation is completed, so that more labor force and production cost are spent, the transportation efficiency is lower, and the problem is solved.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a trolley with a built-in pulley block, which can finish lifting and transporting goods without rotating a suspension arm. The built-in pulley block trolley can hoist the cargoes and place the cargoes on the car body below the lifting arm, so that the whole built-in pulley block trolley can move together with the hoisted cargoes. In addition, the trolley with the built-in pulley block can turn in situ, the turning radius is zero, the turning is flexible, the requirement on the operation environment is low, the labor force is saved, and the efficiency of the whole lifting operation can be obviously improved.
The invention solves the technical problems by adopting the technical scheme that the trolley with the built-in pulley block comprises a base and a suspension arm assembly, wherein the suspension arm assembly is hinged on the base and comprises a control handle, the front end of the suspension arm assembly is provided with a lifting hook, a lifting cylinder is hinged between the suspension arm assembly and the base, the front end of the lower side of the base is provided with a steering mechanism, the rear end of the lower side of the base is provided with a driving wheel, the driving wheel is connected with the control handle through a transmission mechanism, the base is also provided with a hydraulic station, the hydraulic station can control the steering mechanism to steer, the steering mechanism comprises two steering wheels, the steering wheels are all arranged on the base through rotating shafts, the rotating shafts positioned on the lower side of the base are fixedly provided with connecting plates, the same transmission rod is hinged between the two connecting plates, the lower side of the base is hinged with the steering cylinder, the end part of a piston rod of the steering cylinder is hinged on the transmission rod, and the piston rod can drive the steering wheels on two sides to steer synchronously when the piston rod stretches. The lifting arm assembly comprises a first lifting arm hinged to the base, a lifting cylinder is hinged between the first lifting arm and the base, a second lifting arm capable of moving along the first lifting arm is mounted in the first lifting arm in a matched mode, a limiting plate is mounted at the upper end of the second lifting arm extending out of the first lifting arm, a driving cylinder is hinged between the limiting plate and the first lifting arm, a third lifting arm capable of moving along the second lifting arm is mounted in the second lifting arm in a matched mode, a lifting hook is arranged at the upper end of the third lifting arm extending out of the fourth lifting arm, a first driven device is mounted between the second lifting arm and the third lifting arm, the first driven device comprises a first pulley fixedly mounted in the second lifting arm, a first transmission rope is wound on the first pulley, one end of the first transmission rope is fixedly mounted on the first lifting arm, the other end of the first transmission rope is fixedly mounted on the third lifting arm, a second driven device is mounted between the third lifting arm and the fourth lifting arm in a matched mode, the second driven device comprises a second pulley fixedly mounted in the third lifting arm, the second driven arm is mounted on the second lifting arm in a matched mode, the second driven rope is stretched out of the second driven rope is mounted on the second lifting arm, and the second driven rope is synchronously stretched out of the second driven rope is mounted on the second lifting arm, and the second driven rope is stretched out of the second driven rope synchronously. The lifting arm assembly internally mounted has a winch main body, the winch main body comprises a first mounting plate fixedly mounted in the lifting arm assembly, a telescopic oil cylinder is arranged on the first mounting plate, a second mounting plate is fixed on a piston rod of the telescopic oil cylinder, the second mounting plate can move in the lifting arm assembly, a folding arm is fixedly mounted at the front end of the lifting arm assembly, a first fixed pulley and a second fixed pulley are arranged on two sides of the folding arm, pulley block mechanisms are mounted on two sides of the first mounting plate and the second mounting plate, each pulley block mechanism comprises a first front pulley group mounted on the side face of the second mounting plate and a first rear pulley group mounted on the side face of the first mounting plate, the number of the first rear pulley group is always one more than that of the first front pulley group, lifting ropes are fixedly mounted on two sides of the second mounting plate, and firstly bypass the first rear pulley group, then bypass the first rear pulley group, and then stretch out of the lifting arm assembly to bypass the first fixed pulley and the second fixed pulley and then be connected to a lifting hook. The pivot of first back wheelset articulates installs on the davit assembly, still is equipped with two sets of locking positioner between flexible hydro-cylinder and davit assembly, and every locking positioner of group all includes the hydro-cylinder locating piece of fixed mounting on flexible hydro-cylinder, corresponds the position of hydro-cylinder locating piece, and the gusset plate on the davit assembly, gusset plate female screw fit has the briquetting, the briquetting can rotate to compressing tightly the hydro-cylinder locating piece, installs hexagonal bolt in the briquetting, has seted up on the hydro-cylinder locating piece with hexagonal bolt matched with screw, is equipped with first clamp plate between hexagonal bolt's tip and the gusset plate, hexagonal bolt can rotate and get into in the hydro-cylinder locating piece and fix flexible hydro-cylinder and davit assembly. The lifting device is characterized in that a second front wheel set and a second rear wheel set are arranged between the first front wheel set and the first rear wheel set, the second front wheel set is arranged on the second mounting plate, the second rear wheel set is arranged on the first mounting plate, the number of wheels of the second front wheel set and the number of wheels of the second rear wheel set are the same, the diameters of the wheels of the second front wheel set and the second rear wheel set are smaller than those of the first front wheel set and the first rear wheel set, the lifting rope sequentially winds the second rear wheel set, the second front wheel set, the first rear wheel set and the first front wheel set, then winds the first rear wheel set, stretches out of the outer part of the lifting arm assembly, winds the first fixed pulley and the second fixed pulley and then is connected to the lifting hook. the lifting ropes of pulley block mechanisms at two sides are the same, the middle position of the lifting rope is fixed at the bottom of the second mounting plate through a fastening device, and the fastening device comprises a rope frame, a rope pressing block, The rope pressing device comprises a rope rack and fastening bolts, wherein the bottom of a second mounting plate is also provided with a mounting groove matched with a fastening device, one end of the mounting groove is a first inclined surface matched with the rope rack, the rope rack is fixedly mounted at the other end of the mounting groove through the fastening bolts, rope pressing blocks are arranged between the rope rack and the rope rack, two sides of the rope rack are provided with first through holes matched with lifting ropes, the middle position of the rope rack, which is close to one end of the rope pressing blocks, is provided with a protruding block, the protruding block is provided with a second through hole matched with the lifting ropes, the second through hole is perpendicular to the first through hole, one end of the rope pressing blocks, which is close to the rope rack, is provided with a pressing groove matched with the second through hole, a second inclined surface matched with the rope pressing blocks is arranged between the pressing grooves, and when the rope pressing blocks are pressed tightly by the fastening bolts in the second through holes. The lifting ropes of pulley block mechanisms on two sides are the same, a third pulley which is horizontally arranged is arranged at the bottom of the second mounting plate, and the lifting ropes are wound on the third pulley. The lifting hook comprises a lifting hook body, the lifting hook body is matched with and installed in a first counterweight iron, a second counterweight iron is installed on the first counterweight iron through a bolt, a bearing disc is arranged between the first counterweight iron and the second counterweight iron, a gap is reserved between the bearing disc and the second counterweight iron, three blocks of check blocks are installed at the bottom of the second counterweight iron, wedge irons are arranged between the two blocks, a second pressing plate is fixedly installed at the bottom of each block and the bottom of each wedge iron, a third through hole matched with a lifting rope is further formed in the second counterweight iron, and the lifting rope passes through the third through hole and can be fixed on the second counterweight iron by the wedge irons. The transmission mechanism comprises a vertical shaft arranged on the control handle, a first gear is arranged at the bottom of the vertical shaft, a first rack meshed with the first gear is arranged on the base, a second gear is arranged on the rotating shaft of the driving wheel, a second rack meshed with the second gear is arranged on the base, the first rack and the second rack are fixedly connected, and a guide plate matched with the first rack and the second rack is further arranged on the base. The trolley with the built-in pulley block has the advantages that the lifting and the transportation of cargoes can be completed under the condition that the suspension arm is not rotated, the trolley with the built-in pulley block can move together with the lifted cargoes, the steering range is large and flexible during movement, no special requirement is required for the operation environment, the labor requirement is reduced, and meanwhile the efficiency of the whole lifting operation can be remarkably improved. The driven device arranged between the multi-stage suspension arms can ensure that all suspension arms are completely stretched out under the drive of one driving oil cylinder, the structural arrangement of the suspension arms is simplified, multi-stage wheel sets are arranged on two sides of a hoist inside the suspension arms, suspension ropes are wound back and forth on the multi-stage wheel sets, and the telescopic distance of the suspension ropes can be controlled to be longer on the premise that the hoist oil cylinders are telescopic by the same stroke, so that the application range of the whole device is greatly improved. The main components of the hoist with the built-in pulley block trolley are distributed along the length direction, the whole shape of the hoist is slender, the hoist is convenient to install inside the suspension arm, the space outside the suspension arm is not additionally occupied, and enough space is reserved on the crane body to hold the hoisted goods, so that the hoist has the dual functions of hoisting and transportation, and the hoist is particularly suitable for small and medium-sized cranes. The hydraulic system is used for realizing braking, a braking plate is not needed, the problems that the braking plate is easy to wear and needs to be replaced frequently in the use process can be fundamentally solved, and the safety of hoisting operation can be greatly improved. Its main components are hydraulic cylinder and pulley block, simple structure, low cost and long service life. The hydraulic system has the advantages of avoiding overweight lifting, and because the lifting power is provided by the hydraulic system, when the cargo with unknown weight is lifted, the hydraulic system can automatically release pressure and discharge oil even if the weight of the cargo exceeds the load capacity of the hydraulic system, and the condition that the motor of the electric hoist is burnt out when the crane is overloaded for lifting can not occur. the winch also omits a winding drum, a motor, a speed reducer, a braking mechanism, a rope guide and other mechanisms, and has the advantages of simple structure, small volume and convenient maintenance.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention; FIG. 2 is a front view of the present invention; FIG. 3 is a right side view of FIG. 2; FIG. 4 is an enlarged view of a partial view of FIG. 2, FIG. 5 is an enlarged view of a sectional view of a boom in an inner portion, FIG. 6 is an enlarged view of a sectional view of a boom in an inner portion B-B of FIG. 5, FIG. 7 is an enlarged view of a sectional view of a boom in another inner portion, FIG. 8 is a schematic view of a hoist, FIG. 9 is an enlarged view of a section II of FIG. 8, FIG. 10 is an enlarged view of a section III of FIG. 8, FIG. 11 is a schematic view of a locking and positioning device, FIG. 12 is a three-dimensional structure of a fastening device, FIG. 13 is a schematic view of a rope frame, FIG. 14 is a schematic view of the same hoisting rope mounted on a third pulley, FIG. 15 is a schematic view of a hook in a sectional view in a C-C direction of FIG. 15, FIG. 17 is an enlarged view of a section I of FIG. 1, FIG. 18 is a schematic view of a hoisting rope in a hoist in a sectional view in a wire section, FIG. 18B is a schematic view of a hoisting rope in a hoist, wherein a pulley block mechanism includes only a first front pulley group (431) and a first rear pulley group 411), a pulley group mechanism includes a first front pulley group 411, a first rear pulley group 411, a second rear pulley group 432 and a second rear pulley group 431 a is a structure of a first pulley group 411, a is a schematic view, a is a structure of a first front pulley group 21 is a, a is a is a structure of a is a front pulley group, and a is a is a first iron group is a structure is a wire is a, A wire rope distribution schematic of a second rear wheelset (412) and a second front wheelset (432).
In the drawing, 1, a base 11 balancing weight 12 hydraulic station 13 steering mechanism 131, a steering wheel 132, a rotating shaft 133, a connecting plate 134, a steering cylinder 136, a piston rod 14, a driving wheel 15, a lifting cylinder 2, a control handle 21, a vertical shaft 22, a first gear 23, a first rack 24, a second gear 25, a second rack 26, a guide plate 3, a suspension arm assembly 31, a first suspension arm 32, a second suspension arm 33, a third suspension arm 34, a fourth suspension arm 35, a driving cylinder 36, a limiting plate 321, a first pulley 322, a second pulley 332, a first installation plate 42, a telescopic cylinder 43 and a second installation plate of a winch main body 41 of a second driving rope 4 44 folding arm 45 second fixed pulley 46 lifting rope 47 first fixed pulley 431 first front wheel set 411 first rear wheel set 432 second front wheel set 412 second rear wheel set 5 lifting hook 51 first weight iron 53 second weight iron 54 bearing plate 55 dog 56 second pressing plate 58 third rope frame 62 rope pressing block 63 wedge iron 64 fastening bolt 65 mounting groove 66 first inclined plane 67 third pulley 611 first through hole projection 613 second through hole projection 612 pressing groove 622 second inclined plane 623 through groove 71 cylinder positioning block 73 press block 74 first pressing plate 75 first pressing plate
Detailed Description
The invention relates to a trolley with a built-in pulley block, which is shown in figure 1 and comprises a base 1, a control handle 2 and a suspension arm assembly 3. Wherein the suspension arm assembly 3 is hinged on the base 1, and the front end of the suspension arm assembly 3 is provided with a lifting hook 5. A lifting oil cylinder 15 is hinged between the suspension arm assembly 3 and the base 1, and the lifting oil cylinder 15 stretches out to push the suspension arm assembly 3 and the lifting hook 5 to swing and lift to lift the goods. The front end of the lower side of the base 1 is provided with a steering mechanism 13. The rear end of the lower side of the base 1 is provided with a driving wheel 14, and the driving wheel 14 can be an existing electric vehicle motor and is provided with a rubber tire at the periphery. The drive wheel 14 is connected to the control handle 2 via a transmission. The base 1 is also provided with a balancing weight 11 and a hydraulic station 12, the hydraulic station 12 can control the steering mechanism 13 to steer, and the control handle 2 can control the driving wheel 14 to steer. Wherein the weight 11 can lower the center of gravity of the whole built-in pulley block trolley, and prevent the phenomenon of overturning of the device during the process of lifting cargoes. The hydraulic station 12 is provided with a corresponding control switch, a valve and an oil way, and the control switch can control the expansion and contraction of each oil cylinder to finish the lifting of cargoes and the steering of the steering mechanism 13. The hydraulic control system for controlling the hydraulic cylinder is an existing hydraulic system.
As shown in fig. 4, the steering mechanism 13 includes two steering wheels 131, and the steering wheels 131 are each mounted on the base 1 via a rotation shaft 132. The rotating shafts 132 at the lower side of the base 1 are fixedly provided with connecting plates 133, the same transmission rod 134 is hinged between the two connecting plates 133, and two ends of the transmission rod 134 are respectively hinged with the two connecting plates 133. A steering cylinder 135 is hinged to the lower side of the base 1, and the end part of a piston rod 136 of the steering cylinder 135 is hinged to the transmission rod 134. When the piston rod 136 stretches, the connecting plates 133 and the rotating shafts 132 on the two sides can be driven to rotate in the same direction and at the same angle through the transmission rod 134, and the steering wheels 131 on the two sides can be driven to synchronously steer. The boom assembly 3 can be placed onto the front end of the base 1 after lifting the cargo. The steering mechanism 13 and the driving wheel 14 can be adjusted to rotate 90 degrees, so that the whole built-in pulley block trolley can transversely move along the width direction of the base 1, steering and moving are more flexible, and the efficiency of cargo hoisting and transportation is greatly improved, wherein the steering oil cylinder 135 can also be an existing air cylinder or an electric push rod, and the oil cylinder and a hydraulic system are more suitable for the design requirements of the invention.
In order to simplify the driving structure of the boom assembly 3, synchronous extension and retraction of the multi-stage boom can be realized by using one oil cylinder, as shown in fig. 5, 6 and 7, the boom assembly 3 comprises a first boom 31 hinged on the base 1, a lifting oil cylinder 15 is hinged between the first boom 31 and the base 1, a second boom 32 capable of moving along the first boom 31 is cooperatively arranged in the first boom 31, a limiting plate 36 is arranged at the upper end of the second boom 32 extending out of the first boom 31, and a driving oil cylinder 35 is hinged between the limiting plate 36 and the first boom 31. The cylinder body of the driving oil cylinder 35 is hinged with the first suspension arm 31, and the piston rod thereof is hinged with the limiting plate 36. The driving cylinder 35 can synchronously drive the second boom 32 to perform telescopic movement relative to the first boom 31 when telescopic.
As shown in fig. 5, a third boom 33 capable of moving along the second boom 32 is mounted in a matched manner, a fourth boom 34 capable of moving along the third boom 33 is mounted in a matched manner in the third boom 33, a lifting hook 5 is arranged at the upper end of the fourth boom 34 extending out of the third boom 33, a first driven device is mounted between the second boom 32 and the third boom 33, and comprises a first pulley 321 fixedly mounted in the second boom 32, a first driving rope 322 is wound on the first pulley 321, one end of the first driving rope 322 is fixedly mounted on the first boom 31, and the other end of the first driving rope 322 is fixedly mounted on the third boom 33, as shown in fig. 5 and 6.
As shown in fig. 6 and 7, a second driven device is installed between the third boom 33 and the fourth boom 34, the second driven device includes a second pulley 331 fixedly installed inside the third boom 33, a second driving rope 332 is wound around the second pulley 331, one end of the second driving rope 332 is fixedly installed on the second boom 32, and the other end of the second driving rope 332 is fixedly installed on the fourth boom 34.
Analyzing the action linkage relation of the first driven device between the second boom 32 and the third boom 33, namely, when the driving oil cylinder 35 pushes the second boom 32 to stretch out relative to the first boom 31, the first boom 31 is fixed, because the first pulley 321 is fixedly arranged on the second boom 32 and stretches out and moves relative to the first boom 31, one end of the first driving rope 322 wound on the first pulley 321 is fixedly arranged on the first boom 31 and cannot move, and the other end of the first driving rope 322 is fixedly arranged on the third boom 33, and because the whole length of the first driving rope 322 is unchanged, the first pulley 321 drives the third boom 33 to stretch out relative to the second boom 32 when stretching out relative to the first boom 31.
Similarly, the second driven device between the third boom 33 and the fourth boom 34 is analyzed, because the third boom 33 extends relative to the second boom 32, the second pulley 331 fixedly mounted on the third boom 33 also extends and moves relative to the second boom 32, one end of the second driving rope 332 wound on the second pulley 331 is fixedly mounted on the second boom 32, the other end is fixedly mounted on the fourth boom 34, and because the whole length of the second driving rope 332 is unchanged, the second pulley 331 drives the fourth boom 34 to extend relative to the third boom 33 when extending relative to the second boom 32. That is, when the driving oil cylinder 35 pushes the second boom 32 to extend out of the first boom 31, the third boom 33 can extend out of the second boom 32 synchronously, the fourth boom 34 can extend out of the third boom 33 synchronously, and one oil cylinder can push the multi-stage booms to stretch out and draw back.
The hoist body 4 for driving the hoist rope 46 to extend and retract is mounted in the boom assembly 3, and as shown in fig. 8, 9 and 10, the hoist body 4 includes a first mounting plate 41 fixedly mounted in the boom assembly 3, a telescopic cylinder 42 is mounted on the first mounting plate 41, a second mounting plate 43 is fixed on a piston rod of the telescopic cylinder 42, and the second mounting plate 43 can move in the boom assembly 3. The front end of the boom assembly 3 is fixedly provided with a folding arm 44, two sides of the folding arm 44 are provided with a first fixed pulley 47 and a second fixed pulley 45, and a lifting rope 46 extending from the inside of the winch main body 4 bypasses the first fixed pulley 47 and the second fixed pulley 45 and is connected with the lifting hook 5, wherein the folding arm 44 can be arranged at the front end of the fourth boom 34, namely the foremost end position of the boom assembly 3.
Pulley block mechanisms are mounted on two sides of the first mounting plate 41 and the second mounting plate 43, each pulley block mechanism comprises a first front pulley group 431 mounted on the side face of the second mounting plate 43 and a first rear pulley group 411 mounted on the side face of the first mounting plate 41, wherein the number of the first rear pulley group 411 is always one more than that of the first front pulley group 431, lifting ropes 46 are fixedly mounted on two sides of the second mounting plate 43, the lifting ropes 46 are wound between the first front pulley group 431 and the first rear pulley group 411, and a protection frame matched with the first front pulley group 431 is further arranged on the mounting plate corresponding to the position of the pulley group, so that the lifting ropes 46 can be prevented from falling off. The number of wheels of the first front wheel set 431 is at least one, and the number of wheels of the first rear wheel set 411 is at least two, as shown in fig. 18B, the lifting rope 46 bypasses the first rear wheel set 411 first, then bypasses the first front wheel set 431 and then bypasses the first rear wheel set 411, then extends out of the boom assembly 3 to bypass the first fixed pulley 47 and the second fixed pulley 45 and then is connected to the lifting hook 5, and the purpose that the number of wheels of the first rear wheel set 411 is always one more than the number of wheels of the first front wheel set 431 is to enable the lifting rope 46 to extend out of the interior of the boom assembly 3 after bypassing the first rear wheel set 411. As shown in fig. 9 and 10, the number of wheels of the first front wheel group 431 is three, the number of wheels of the first rear wheel group 411 is four, the ratio of the moving distance of the telescopic cylinder 42 to the telescopic distance of the hoist rope 46 is related to the number of wheels, and the larger the number of wheels is, the longer the telescopic distance of the hoist rope 46 is. The winch main body 4 is arranged in the suspension arm assembly 3, so that the telescopic distance of the telescopic oil cylinder 42 can be reduced to the greatest extent on the premise that the telescopic length of the suspension rope 46 is enough, and the length of the whole suspension arm assembly 3 can be reduced.
In order to accurately mount the hoist body 4 in the boom assembly 3 and avoid shaking when lifting cargoes, as shown in fig. 11, the rotating shaft of the first rear wheel group 411 is hinged on the boom assembly 3, a mounting hole matched with the rotating shaft is formed on the side wall of the boom assembly 3, two groups of locking positioning devices are further arranged between the telescopic cylinder 42 and the boom assembly 3, each group of locking positioning devices comprises a cylinder positioning block 71 fixedly mounted on the telescopic cylinder 42 and corresponds to the position of the cylinder positioning block 71, a reinforcing plate 72 is arranged on the boom assembly 3, a pressing block 73 is in threaded fit with the reinforcing plate 72, the pressing block 73 can rotate to the pressing cylinder positioning block 71, a light hole is formed in the pressing block 73, a hexagonal bolt 74 is mounted in the light hole, a screw hole matched with the hexagonal bolt 74 is formed in the cylinder positioning block 71, and a first pressing plate 75 is arranged between the end part of the hexagonal bolt 74 and the reinforcing plate 72, and the hexagonal bolt 74 can rotate into the cylinder positioning block 71 to fix the telescopic cylinder 42 and the boom assembly 3.
When the crane is installed, the winch main body 4 is firstly stretched into the suspension arm assembly 3, the rotating shaft of the first rear wheel group 411 is hinged to the suspension arm assembly 3, then the pressing blocks 73 are screwed into the reinforcing plates 72 at two sides of the suspension arm assembly 3, the pressing blocks 73 at two sides are pressed against the oil cylinder positioning blocks 71, the positions of the pressing blocks 73 at two sides are adjusted, the telescopic oil cylinders 42 are positioned at the middle position of the suspension arm assembly 3, at the moment, one person needs to adjust the crane at the rear, and one person checks whether the crane is aligned before. After the adjustment is finished, the hexagon bolt 74 is screwed into the unthreaded hole of the pressing block 73 and the screw hole of the oil cylinder positioning block 71, the pressing block 73 is positioned, the fixation between the telescopic oil cylinder 42 and the suspension arm assembly 3 is completed, the whole installation operation is convenient to implement and the positioning is accurate, the whole winch main body 4 can be ensured not to shake when the goods are lifted, and the inner hexagon is arranged at the top of the pressing block 73, so that the pressing block 73 is manually screwed into the reinforcing plate 72.
In order to further increase the telescopic length distance of the control lifting rope 46 and reduce the overall width of the boom assembly 3 on the premise that the maximum telescopic length distance of the telescopic cylinder 42 is unchanged, a second front wheel set 432 and a second rear wheel set 412 are arranged between the first front wheel set 431 and the first rear wheel set 411, as shown in fig. 10, the second front wheel set 432 is mounted on the second mounting plate 43, as shown in fig. 9, the second rear wheel set 412 is mounted on the first mounting plate 41, the number of the second front wheel set 432 and the number of the second rear wheel set 412 are the same, in order to ensure that the lifting ropes 46 wound on each wheel set are not affected by each other, the wheel diameters of the second front wheel set 432 and the second rear wheel set 412 are smaller than the wheel diameters of the first front wheel set 431 and the first rear wheel set 411, a group of the second front wheel set 432 and the second rear wheel set 412 which are the same as the number of the first front wheel set 431 are increased, and the telescopic distance of the lifting rope 46 can be increased by a plurality of times on the premise that the telescopic cylinder 42 moves the same distance. As shown in fig. 18A, the lifting rope 46 sequentially bypasses the second rear wheel group 412, the second front wheel group 432, the first rear wheel group 411 and the first front wheel group 431, then winds around the first rear wheel group 411, and then extends out of the boom assembly 3 to bypass the first fixed pulley 47 and the second fixed pulley 45 and then is connected to the lifting hook 5. The lifting rope 46 is wound between the second rear wheel set 412 and the second front wheel set 432, the number of wheels on the second wheel set is wound on the first wheel set, the winding sequence between the second rear wheel set 412 and the second front wheel set 432 is from outside to inside, and the winding sequence between the first front wheel set 431 and the first rear wheel set 411 is from inside to outside, so that the lifting rope 46 wound by the first rear wheel set 411 extends out of the lifting arm assembly 3 from the outer side of the wheel set, and winding obstacles and the like are avoided among the lifting ropes 46. When the winch main body 4 only has the first front wheel group 431 and the first rear wheel group 411, the winding sequence of the lifting rope 46 in the first front wheel group 431 and the first rear wheel group 411 is from inside to outside, and the lifting rope 46 wound out of the first rear wheel group 411 extends out of the wheel group to the suspension arm assembly 3.
Pulley block mechanism example:
1. as shown in FIG. 22, the first rear wheel group 411 consists of three pulleys B1, B2 and B3, and the first front wheel group 431 consists of two pulleys F1 and F2, and the distribution rule of the steel wire ropes is that the free end of the steel wire rope 46 extends from 43 to the rear, bypasses the innermost B1, bypasses the innermost F1, bypasses the B2, bypasses the F2, and finally bypasses the B3, and extends out of the boom 3 forwards after bypassing the B3.
2. When the pulley block mechanism comprises a first front pulley group 431, a first rear pulley group 411, a second rear pulley group 412 and a second front pulley group 432, as shown in fig. 23, the wire rope distribution example is as follows, the first rear pulley group 411 is composed of three pulleys of B1, B2 and B3, the first front pulley group 431 is composed of two pulleys of F1 and F2, the second rear pulley group 412 is composed of two pulleys of B1 and B2, and the second front pulley group 432 is composed of two pulleys of F1 and F2.
The steel wire rope distribution rule is divided into a first winding stage and a second winding stage:
in the first winding stage, the free end of the wire rope 46 is extended rearward from the second mounting plate 43, first around the outermost B1, then around the outermost f1, then around B2, then around f2 and extended toward B1.
And in the second winding stage, the steel wire rope from the position F2 bypasses the innermost B1, bypasses the innermost F1, bypasses the B2, bypasses the F2, bypasses the B3 and extends forwards out of the suspension arm 3 after bypassing the B3.
The two lifting ropes 46 of the pulley block mechanisms on the two sides are respectively and fixedly arranged on the second mounting plate 43, so that the two lifting ropes 46 of the pulley block mechanisms on the two sides are identical in order to facilitate manufacturing and installation, the middle positions of the lifting ropes 46 are fixed at the bottom of the second mounting plate 43 through fastening devices, and the two sections of the lifting ropes 46 respectively positioned on the pulley block mechanisms on the two sides are equal in length and are connected to the lifting hook 5, so that the pulley block mechanisms on the two sides can bear the same pulling force when lifting cargoes. As shown in fig. 12, the fastening device includes a rope frame 61, a rope pressing block 62, a chute 63 and a fastening bolt 64, and a mounting groove 65 matched with the fastening device is further formed at the bottom of the second mounting plate 43, wherein one end of the mounting groove 65 is a first inclined surface 66 matched with the chute 63, and the chute 63 is matched and mounted with the first inclined surface 66 through the fastening bolt 64. A rope holder 61 is fixedly installed at the other end of the installation groove 65, and a rope pressing block 62 is arranged between the rope holder 61 and the diagonal iron 63. As shown in fig. 13, the two sides of the rope frame 61 are provided with first through holes 611 matching with the lifting rope 46, the middle position of the rope frame 61 near one end of the rope pressing block 62 is provided with a bump 612, the bump 612 is provided with second through holes 613 matching with the lifting rope 46, the second through holes 613 are perpendicular to the first through holes 611, and the middle position of the lifting rope 46 is located in the bump 612. The rope pressing block 62 is provided with a pressing groove 621 matched with the second through hole 613 near one end of the rope frame 61, a through groove 623 matched with the convex block 612 is formed between the pressing grooves 621, one end of the rope pressing block 62 near the inclined iron 63 is provided with a second inclined surface 622 matched with the inclined iron 63, when the inclined iron 63 is pressed by the rotating fastening bolt 64, the inclined iron 63 moving towards the inside of the mounting groove 65 can push the rope pressing block 62 to move to press the rope frame 61, and then the pressing groove 621 on the rope pressing block 62 is used for pressing and fastening the lifting rope 46 in the second through hole 613, so that the fixing of the lifting rope 46 and the second mounting plate 43 is completed.
If the lifting ropes 46 of the pulley block mechanisms at two sides are the same, if the built-in pulley block trolley is stopped at a fixed position to lift a row of goods, when the goods are far away from the built-in pulley block trolley, the lifting ropes 46 are required to be lengthened, and the lifting hook 5 is moved to the goods position, but when the goods are lifted, the lifting ropes 46 at two sides are unbalanced due to the force applied in the inclined state, the installation strength of the lifting ropes 46 at two sides can be seriously affected after long-term use, even the lifting ropes fall off, and in order to avoid the situation, as shown in fig. 14, the bottom of the second mounting plate 43 is provided with the third pulley 67 which is horizontally arranged, and the lifting ropes 46 are wound on the third pulley 67, when the lifting ropes 46 are in the inclined state to lift the goods, the lifting ropes 46 at two sides are the same and can rotate along with the third pulley 67, so that the lengths of the lifting ropes 46 at two sides are always ensured to be equal, and the same tensile force can be born.
Further, as shown in fig. 15 and 16, the hook 5 includes a hook body 51, the hook body 51 is mounted in the first weight iron 52 in a matching manner, a second weight iron 53 is mounted on the first weight iron 52 through a bolt, a receiving disc 54 is disposed between the first weight iron 52 and the second weight iron 53, a gap is left between the receiving disc 54 and the second weight iron 53, three stoppers 55 are mounted at the bottom of the second weight iron 53, a wedge iron 56 is disposed between the two stoppers 55, a second pressing plate 57 is fixedly mounted at the bottoms of the stoppers 55 and the wedge iron 56, a third through hole 58 is also formed in the second weight iron 53 in a matching manner with the lifting rope 46, and the lifting rope 46 can be fixed on the second weight iron 53 by the wedge iron 56 through the third through hole 58.
The transmission mechanism between the driving wheel 14 and the control handle 2 may be an existing screw nut transmission mechanism or a belt transmission wheel transmission mechanism, for convenience in installation and precise control, as shown in fig. 17, the transmission mechanism includes a vertical shaft 21 installed on the control handle 2, a first gear 22 is installed at the bottom of the vertical shaft 21, a first rack 23 meshed with the first gear 22 is installed on the base 1, a second gear 24 is installed on a rotating shaft of the driving wheel 14, a second rack 25 meshed with the second gear 24 is installed on the base 1, wherein the first rack 23 and the second rack 25 are fixedly connected, and a guide plate 26 matched with the first rack 23 and the second rack 25 is further provided on the base 1. The control handle 2 is rotated to drive the driving wheel 14 to synchronously rotate through the vertical shaft 21, the first gear 22, the first rack 23, the second rack 25 and the second gear 24 in sequence, wherein the transmission mechanism can be replaced by the existing electronic steering gear.
The technical scheme of the invention is not limited to the scope of the embodiments of the invention. The technical content that is not described in detail in the invention is known in the prior art.
Claims (6)
1. The trolley with the built-in pulley block comprises a base (1) and a suspension arm assembly (3), wherein the suspension arm assembly (3) is hinged on the base (1), and is characterized by comprising a control handle (2), a lifting hook (5) is arranged at the front end of the suspension arm assembly (3), a lifting cylinder (15) is hinged between the suspension arm assembly (3) and the base (1), a steering mechanism (13) is arranged at the front end of the lower side of the base (1), a driving wheel (14) is arranged at the rear end of the lower side of the base (1), the driving wheel (14) is connected with the control handle (2) through a transmission mechanism, a hydraulic station (12) is further arranged on the base (1), the hydraulic station (12) can control the steering mechanism (13) to steer, the steering mechanism (13) comprises two steering wheels (131), the steering wheels (131) are all arranged on the base (1) through rotating shafts (132), connecting plates (133) are fixedly arranged on the rotating shafts (132) on the lower side of the base (1), a same transmission rod (134) is hinged between the two connecting plates (133), the steering cylinders (135) are hinged on the lower side of the base (1), the transmission rod (135) is hinged on the end part of the steering rod (134), the lifting arm assembly (3) internally provided with a winch main body (4) comprises a first mounting plate (41) fixedly arranged in the lifting arm assembly (3), a telescopic cylinder (42) is arranged on the first mounting plate (41), a second mounting plate (43) is fixed on a piston rod of the telescopic cylinder (42), the second mounting plate (43) can move in the lifting arm assembly (3), a folding arm (44) is fixedly arranged at the front end of the lifting arm assembly (3), a first fixed pulley (47) and a second fixed pulley (45) are arranged at two sides of the folding arm (44), pulley block mechanisms are arranged at two sides of the first mounting plate (41) and the second mounting plate (43), each pulley block mechanism comprises a first front pulley group (431) arranged on the side face of the second mounting plate (43) and a first rear pulley group (411) arranged on the side face of the first mounting plate (41), the number of wheels of the first rear pulley group (411) is always more than that of the first front pulley group (431), the number of the first rear pulley group (431) is always more than that of the first front pulley group (431), the first rear pulley group (411) is arranged on the two sides of the first mounting plate (46) and the first rear pulley group (46) is wound around the first rear pulley group (46), the suspension arm assembly (3) is extended out to bypass the first fixed pulley (47) and the second fixed pulley (45) and then is connected to the lifting hook (5), the suspension ropes (46) of the pulley block mechanisms at two sides are the same, the middle position of the suspension ropes (46) is fixed at the bottom of the second mounting plate (43) through a fastening device, and the fastening device comprises a rope frame (61), a rope pressing block (62), The device comprises an inclined iron (63) and a fastening bolt (64), wherein a first through hole (611) matched with a fastening device is further formed in the bottom of a second mounting plate (43), a first inclined plane (66) matched with the inclined iron (63) is formed at one end of the mounting groove (65), the inclined iron (63) is matched with the first inclined plane (66) through the fastening bolt (64), a rope bracket (61) is fixedly mounted at the other end of the mounting groove (65), a rope pressing block (62) is arranged between the rope bracket (61) and the inclined iron (63), first through holes (611) matched with the lifting rope (46) are formed in two sides of the rope bracket (61), a lug (612) is arranged at the middle position of one end of the rope bracket (61) close to the rope pressing block (62), a second through hole (613) matched with the lifting rope (46) is formed in the lug (612), a pressing groove (621) matched with the second through hole (613) is formed in one end of the rope pressing block (62) close to the rope bracket (61), a pressing groove (621) matched with the second through hole (613) is formed between the rope bracket (61) and the inclined iron pressing block (63) and the inclined iron (622) is formed in the middle position of one end of the middle position of the rope bracket (61) close to the inclined iron (62), the lifting ropes (46) are pressed and fixed in the second through holes (613) through pressing grooves (621) on the rope pressing blocks (62), the lifting ropes (46) of the pulley block mechanisms on two sides are the same, a third pulley (67) which is horizontally arranged is arranged at the bottom of the second mounting plate (43), and the lifting ropes (46) are wound on the third pulley (67).
2. A built-in pulley block trolley as claimed in claim 1, wherein the boom assembly (3) comprises a first boom (31) hinged on the base (1), a lifting cylinder (15) is hinged between the first boom (31) and the base (1), a second boom (32) capable of moving along the first boom (31) is mounted in an internal fit manner, a limiting plate (36) is mounted at the upper end of the second boom (32) extending out of the first boom (31), a driving cylinder (35) is mounted in an articulated manner between the limiting plate (36) and the first boom (31), a third boom (33) capable of moving along the second boom (32) is mounted in an internal fit manner, a fourth boom (34) capable of moving along the third boom (33) is mounted in an internal fit manner, a lifting hook (5) is arranged at the upper end of the fourth boom (34) extending out of the third boom (33), a first driven device is mounted between the second boom (32) and the third boom (33), the first driven device comprises a first boom (321) fixedly mounted in the second boom (32), a first driving rope (321) is mounted on the first boom (32) and a second driving rope (322) is mounted on the first end of the first boom (31), install second slave unit between third davit (33) and fourth davit (34), second slave unit includes second pulley (331) of fixed mounting in third davit (33) inside, winds on second pulley (331) second driving rope (332), the one end fixed mounting of second driving rope (332) is on second davit (32), and the other end fixed mounting of second driving rope (332) is on fourth davit (34), and when actuating cylinder (35) promoted second davit (32) and stretched out first davit (31), third davit (33) can stretch out second davit (32) in step, and fourth davit (34) can stretch out third davit (33) in step.
3. The trolley with the built-in pulley block according to claim 1, wherein the rotating shaft of the first rear pulley group (411) is hinged to the suspension arm assembly (3), two groups of locking and positioning devices are further arranged between the telescopic cylinder (42) and the suspension arm assembly (3), each group of locking and positioning devices comprises a cylinder positioning block (71) fixedly arranged on the telescopic cylinder (42), the positions of the cylinder positioning blocks (71) correspond to the positions of the reinforcing plates (72) on the suspension arm assembly (3), the pressing blocks (73) are in threaded fit with each other, the pressing blocks (73) can rotate to press the cylinder positioning blocks (71), hexagonal bolts (74) are arranged in the pressing blocks (73), screw holes matched with the hexagonal bolts (74) are formed in the cylinder positioning blocks (71), and first pressing plates (75) are arranged between the ends of the hexagonal bolts (74) and the reinforcing plates (72), and the hexagonal bolts (74) can rotate into the cylinder positioning blocks (71) to fix the telescopic cylinder (42) and the suspension arm assembly (3).
4. A trolley with built-in pulley blocks according to claim 1, wherein a second front pulley group (432) and a second rear pulley group (412) are arranged between the first front pulley group (431) and the first rear pulley group (411), the second front pulley group (432) is arranged on the second mounting plate (43), the second rear pulley group (412) is arranged on the first mounting plate (41), the number of the second front pulley group (432) and the number of the second rear pulley group (412) are the same, the diameters of the second front pulley group (432) and the second rear pulley group (412) are smaller than those of the first front pulley group (431) and the first rear pulley group (411), a lifting rope (46) sequentially bypasses the second rear pulley group (412), the second front pulley group (432), the first rear pulley group (411) and the first front pulley group (431) and then winds back to the first rear pulley group (411), and then the lifting arm (3) winds outside the first fixed pulley (47) and the second fixed pulley (45) and then is connected to a lifting hook (5).
5. The trolley with the built-in pulley block according to claim 1, wherein the lifting hook (5) comprises a lifting hook body (51), the lifting hook body (51) is installed in the first counterweight iron (52) in a matched mode, a second counterweight iron (53) is installed on the first counterweight iron (52) through bolts, a bearing disc (54) is arranged between the first counterweight iron (52) and the second counterweight iron (53), a gap is reserved between the bearing disc (54) and the second counterweight iron (53), three blocks (55) are installed at the bottom of the second counterweight iron (53), a wedge iron (56) is arranged between the two blocks (55), a second pressing plate (57) is fixedly installed at the bottoms of the blocks (55) and the wedge iron (56), a third through hole (58) matched with the lifting rope (46) is formed in the second counterweight iron (53), and the lifting rope (46) can be fixed on the second counterweight iron (53) through the third through hole (58).
6. The trolley with the built-in pulley block according to claim 1, wherein the transmission mechanism comprises a vertical shaft (21) arranged on the control handle (2), a first gear (22) is arranged at the bottom of the vertical shaft (21), a first rack (23) meshed with the first gear (22) is arranged on the base (1), a second gear (24) is arranged on a rotating shaft of the driving wheel (14), a second rack (25) meshed with the second gear (24) is arranged on the base (1), the first rack (23) and the second rack (25) are fixedly connected, and a guide plate (26) matched with the first rack (23) and the second rack (25) is further arranged on the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817637.5A CN112027931B (en) | 2020-08-14 | 2020-08-14 | Trolley with built-in pulley block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817637.5A CN112027931B (en) | 2020-08-14 | 2020-08-14 | Trolley with built-in pulley block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112027931A CN112027931A (en) | 2020-12-04 |
| CN112027931B true CN112027931B (en) | 2025-01-28 |
Family
ID=73578698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010817637.5A Active CN112027931B (en) | 2020-08-14 | 2020-08-14 | Trolley with built-in pulley block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112027931B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196517B (en) * | 2022-09-13 | 2022-12-09 | 山东迈易特传动有限公司 | Lifting device for transferring goods by ship |
| CN117756024B (en) * | 2024-02-22 | 2024-05-17 | 山东弘亚铝业科技有限公司 | Hoisting device and hoisting method for aluminum alloy production |
| CN119238488B (en) * | 2024-12-03 | 2025-03-25 | 湖北华鹏智慧科技有限公司 | A mechanical and electrical pipeline construction and installation machine |
| CN119320094B (en) * | 2024-12-18 | 2025-03-04 | 河南省大方重型机器有限公司 | Double-lifting system type crane trolley |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212403259U (en) * | 2020-08-14 | 2021-01-26 | 修昌珉 | Internal pulley block trolley |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295794A (en) * | 1996-03-05 | 1997-11-18 | Shigeru Ueno | Load hoisting device for telescopic boom type crane |
| CN202440240U (en) * | 2012-01-07 | 2012-09-19 | 刘伟 | Cylinder type crane for well drilling |
| CN209038853U (en) * | 2018-11-13 | 2019-06-28 | 法兰泰克重工股份有限公司 | A kind of handling apparatus |
-
2020
- 2020-08-14 CN CN202010817637.5A patent/CN112027931B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212403259U (en) * | 2020-08-14 | 2021-01-26 | 修昌珉 | Internal pulley block trolley |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112027931A (en) | 2020-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112027931B (en) | Trolley with built-in pulley block | |
| WO2022040923A1 (en) | Material boxing device and material feeding apparatus | |
| CN101708809B (en) | Reel frame system used for crane | |
| CN104925673B (en) | A kind of many cranes integration of operation auxiliary hoisting device and method | |
| CN103848360A (en) | Assembled tower type crane with mobile balancing weight system | |
| CN111994651A (en) | A new type of material unloading equipment and a new type of material unloading device | |
| CN101468766B (en) | movable rope winding device | |
| CN211998570U (en) | Telescopic arm type truck-mounted crane | |
| CN201587817U (en) | Rotary vehicle-mounted crane with hand winch | |
| US4993911A (en) | Mobile crane | |
| CN212403259U (en) | Internal pulley block trolley | |
| CN212403258U (en) | Oil cylinder pulley type hoister | |
| CN2717914Y (en) | Counterweight loading and unloading mechanism for crane | |
| CN221051528U (en) | Combined platform truck | |
| CN205275062U (en) | A mobile crane with a double rope grab | |
| CN111994803B (en) | Cylinder pulley winch | |
| CN105398952B (en) | A kind of finished product is laid bricks fixture | |
| CN205170186U (en) | Finished product anchor clamps of laying bricks | |
| CN221070761U (en) | Folding lorry-mounted crane | |
| CN219279791U (en) | Dry quenching hoister | |
| CN212174386U (en) | Lifting device for operation trolley | |
| CN213294495U (en) | Novel automobile crane jib mechanism | |
| CN2153536Y (en) | Trackless wheel type crane | |
| CN111115449B (en) | Box body hoisting balance adjusting mechanism | |
| CN222922812U (en) | A tire type pipe pile loader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |