CN110626962A - Hoisting assembly, excavator applying same and hoisting method - Google Patents
Hoisting assembly, excavator applying same and hoisting method Download PDFInfo
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- CN110626962A CN110626962A CN201910909837.0A CN201910909837A CN110626962A CN 110626962 A CN110626962 A CN 110626962A CN 201910909837 A CN201910909837 A CN 201910909837A CN 110626962 A CN110626962 A CN 110626962A
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- Prior art keywords
- hoisting
- assembly
- lifting
- screw thread
- adjustable
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- 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
- B66C23/18—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 specially adapted for use in particular purposes
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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
- 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
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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
- 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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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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
- 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
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a lifting assembly, which comprises a lifting hook assembly, wherein the lifting hook assembly comprises a lifting arm, one end of the lifting arm is rotatably arranged in a mounting frame, and the bottom of the mounting frame is detachably connected with a supporting assembly; the supporting component comprises at least one telescopic supporting rod, the length of the telescopic supporting rod is adjustable, and the top of the telescopic supporting rod is hinged with the bottom surface of the mounting rack. The invention also discloses an excavator and a hoisting method based on the modular hoisting assembly, wherein the hoisting method comprises a first hoisting process and a second hoisting process. The invention not only allows the worker to select the first or second hoisting process according to the weight of the goods, the construction is more flexible, the working efficiency is higher, in addition, the stability of the vehicle body can be improved through the supporting component when the heavy weight is hoisted, and the risk of the vehicle body overturning is eliminated.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a lifting assembly, an excavator applying the same and a lifting method.
Background
With the economic development and scientific technology progress of China, the production technology level in the field of power grid construction is also greatly improved. In recent years, the ultrahigh voltage transmission line in China enters the normalized construction, and the construction mode of the overhead transmission line by relying on the traditional manpower in the past is gradually changed to the mechanized construction. The whole-process mechanized construction requirement changes the mode that the line engineering construction is mainly performed by manpower and assisted by machinery in the past, realizes the conversion from the line engineering construction to the mechanized mode, is favorable for improving the safety quality, the efficiency benefit and the process level of the power grid, and is an inevitable requirement for the development of the first-class power grid construction technology.
The mechanized construction is implemented, so that workers are relieved from heavy physical labor, and the win-win situation of engineering construction efficiency, safety, quality and the like is brought. The technical advanced, customized specialized and standard modularized transmission engineering construction equipment is an effective support for the whole process mechanized construction.
In the engineering application process, due to the reasons of sites, construction conditions, cost and the like, the adopted excavator is diversified in functions. Patent CN203498883U discloses a telescopic boom and bucket rod combined type working mechanism, which can complete construction operations such as crushing, cutting, hoisting, excavating, clamping and the like through the arrangement of a working attachment connecting mechanism arranged on a boom, and has stronger working range and working capacity. Although the multifunctional operating mechanism can integrate or replace various working accessories, the multifunctional operating mechanism is not fine enough. For example, the lifting function of the multifunctional operating mechanism adopts the same lifting mode for heavy objects with different weights, so that the working efficiency is low, the operating cost is high, and when the heavy objects are heavier, the potential safety hazard that the vehicle body is unstable and even overturns exists.
Disclosure of Invention
The invention aims to provide excavating equipment and a hoisting method based on a modularized expanded hoisting assembly, and aims to solve the problems that in the prior art, a multifunctional operating mechanism cannot adjust a hoisting mode according to heavy objects with different weights, so that the working efficiency is low, the operating cost is high, and when the heavy objects are heavy, a vehicle body is unstable and even has a risk of overturning.
In the prior art, along with the propulsion of mechanized construction, in order to satisfy the construction requirements of different operations in the construction site and reduce the construction cost, the application of the multifunctional operation mechanism is more and more common. Patent CN203498883U discloses a large-sized multifunctional working mechanism capable of replacing or integrating a plurality of kinds of working attachments, which can independently perform a plurality of kinds of construction work in an area with a complicated work requirement. However, the multifunctional working mechanism is large in size and heavy in weight, and more importantly, the multifunctional working mechanism is not fine enough although the type of construction work is many. For example, the lifting function of the lifting machine is to lift heavy objects with any weight by using the same output power, so that the working efficiency is low and the working cost is high. Further, when the hoisting weight approaches or exceeds the weight of the vehicle body, the vehicle body is unstable, and there is a risk of overturning in a complex terrain in a mountain area.
Therefore, the inventor designs a modularized lifting assembly which can be installed in an excavator and other multifunctional operating mechanisms, the lifting mode is adjusted according to the weight of a heavy object, construction is more flexible, working efficiency is higher, and meanwhile, when the heavy object is lifted, the lifting assembly can improve stability of a vehicle body and eliminate the risk of overturning the vehicle body.
Specifically, the invention is realized by the following technical scheme:
the lifting assembly comprises a lifting hook assembly, wherein the lifting hook assembly comprises a lifting arm, one end of the lifting arm is rotatably arranged in a mounting frame, and the bottom of the mounting frame is detachably connected with a supporting assembly.
The same as the prior art, the lifting hook component comprises a lifting arm, one end of the lifting arm is provided with a sling rope connecting piece, the lifting arm is connected with a sling rope through the sling rope connecting piece, and the bottom end of the sling rope is connected with a lifting hook. When the hoisting operation is carried out, the sling is contracted through the motor to complete the hoisting operation, and the sling is lowered to complete the unloading operation.
Unlike the prior art, the other end of the hook assembly is rotatably mounted in the mounting bracket. The rotatable means here are various, for example a fixed axis is provided in the mounting frame, which fixed axis runs through the boom, so that the boom can be rotated around the fixed axis. Preferably, in order to realize the mechanized control of the suspension arm, a rotary oil cylinder is arranged in the mounting frame, and the rotary oil cylinder is in the prior art. Preferably, the mounting bracket is a U-shaped frame structure including a top surface, a bottom surface and one side surface, thereby allowing the boom arm to rotate over a wider range of angles.
The bottom of mounting bracket is connected with the supporting component detachably. The detachable tie here means that the bottom of the mounting frame is connected with the top of the support component in a detachable connection mode such as threaded connection, clamping connection and the like.
When the lifting hook assembly is fixed at the front end of an excavator or other multifunctional operating mechanisms, the lifting hook assembly can realize two lifting processes. The first lifting process is used to lift cargo of conventional weight. In the first lifting process, the support component is not installed, and the position of the suspension arm in the installation frame is fixed, so that the suspension arm and the installation frame rotate simultaneously. The hoisting process mainly utilizes the rotation of the front arm and the movable arm of the excavator and the horizontal rotation of the vehicle body on the chassis, so that a larger working space and a larger hoisting range can be realized when lighter goods are hoisted. The second lifting process is used for lifting heavier cargoes, the whole vehicle body is easy to be unstable due to the heavy cargoes and the fulcrums are close to the rear, and the operation is unsafe. Therefore, in the second lifting process, the support assembly is arranged below the mounting frame, so that the fulcrum is moved forwards to the front end of the excavator, and the stability of the excavator body is obviously improved. During operation, the front arm, the movable arm and the vehicle body of the excavator are not rotated, the chassis is fixed, and at the moment, the rotation of the rotary oil cylinder is controlled to drive the suspension arm to rotate, so that operation in a horizontal plane is realized.
Through the setting, not only allow the staff to select the first kind or the second kind according to the weight of goods and lift by crane the process, the construction is more nimble, work efficiency is higher, simultaneously through the installation supporting component, can improve automobile body stability when lifting by crane heavier heavy weight thing, eliminates the risk that the automobile body topples. In addition, when the goods are lifted, the weight of the goods and the suspension arm is borne by the supporting component, so that the operation safety is improved, and the suspension arm is connected with the supporting component, so that the time for installing the lifting device is shortened, and the working efficiency is improved.
In some embodiments, the support assembly may include one support rod or a plurality of support rods. The supporting rod can be non-telescopic to further strengthen the bearing strength and stability during flat ground construction, and the supporting rod can also be telescopic to adapt to rugged and complex ground structures in mountainous areas by changing the length.
As a preferred embodiment of the present invention, the support assembly includes at least one telescopic support rod, the length of the telescopic support rod is adjustable, and the top of the telescopic support rod is hinged with the bottom surface of the mounting rack. In the construction and construction process of the power grid, the power grid usually needs to go to a mountainous area with a complex terrain structure for operation. Because mountain area ground is uneven, the bracing piece that length is unchangeable often can't form stable support. For this reason, in order to apply the support assembly to mountain landforms, the support rods are provided as telescopic support rods whose lengths are adjustable. The top of the telescopic support rod is hinged with the mounting frame, and the telescopic support rod can be detachably mounted in the hinge structure. Preferably, set up the sleeve in the bottom of mounting bracket, telescopic top is articulated with the bottom of mounting bracket for the sleeve can be at mounting bracket bottom angle of adjustment, and the sleeve is hollow structure, and telescopic bracing piece's top and sleeve interference fit can realize that telescopic bracing piece and mounting bracket are articulated in order to allow telescopic bracing piece angle of adjustment, can also guarantee to support under the prerequisite of intensity, allow telescopic bracing piece to adopt lightweight material to make. Preferably, the telescopic supporting rod is made of 40 Cr.
In some embodiments, the support assembly includes three telescoping support rods.
The length of the telescopic supporting rod can be adjusted in various ways, for example, a combined sleeve way is adopted, and after the length is adjusted, the pin shaft penetrates through the inner sleeve and the outer sleeve to be fixed.
In order to improve the supporting strength of the telescopic supporting rod, as a preferred structure of the telescopic supporting rod of the invention, the telescopic supporting rod comprises an upper section, a middle section and a lower section, the upper end of the middle section is provided with an upper section connecting part, the upper section connecting part is provided with a first thread, the lower end of the middle section is provided with a lower section connecting part, the lower section connecting part is provided with a second thread, wherein the first thread is matched with the internal thread of the upper section, the second thread is matched with the internal thread of the lower section, and the rotating directions of the first thread and the second thread are opposite.
Specifically, the upper segment is used for articulating with the mounting bracket bottom, and the lower segment is used for inserting in soil and fixes. The upper end and the lower end of the middle section are both provided with connecting parts, wherein the outer wall of the connecting part of the upper section is provided with first threads which are matched with internal threads inside the upper section, and the connecting part of the upper section can be screwed in or out of the upper section by rotating the middle section, so that the total length of the upper section and the middle section is changed; similarly, be provided with the second screw thread on the outer wall of hypomere connecting portion, the second screw thread matches with the inside internal thread phase-match of hypomere, through rotatory middle section, can be with hypomere connecting portion screw in or the hypomere of back-out, and then change the total length of hypomere and middle section. In this embodiment, the first and second threads are rotated in opposite directions, for example, the first thread is a left-handed thread and the second thread is a right-handed thread, or vice versa. Through setting to the opposite screw thread of direction of rotation, when rotating the middle section towards a direction, can realize simultaneously unscrewing or screw in upper segment and hypomere, and then increase or shorten the total length of telescopic bracing piece. Preferably, the side of the middle section is also provided with a handle for controlling the middle section to rotate. Through the setting, not only can adjust the length of telescopic bracing piece in order to adapt to the uneven ground of height fast in the support process, first screw thread, second screw thread and upper segment, the internal screw thread of hypomere threaded connection mode can show the bearing strength who improves telescopic bracing piece moreover, improves the stability and the security that lift by crane the operation.
As another preferable structure of the telescopic supporting rod of the invention, the bottom end of the lower section is a tip end, and a stop block and a limit column positioned below the stop block are fixed on the lower section; the adjustable bottom plate is positioned between the stop block and the limiting column, a through hole is formed in the adjustable bottom plate and used for being sleeved on the lower section, and the size of the through hole is larger than the diameter of the lower section.
The structure of the lower section tip part is beneficial to the telescopic supporting rod to be rapidly inserted into more compact soil, but when a heavy object is lifted, the bottom end of the supporting rod can continuously sink under the action of gravity. In order to solve the problem, an adjustable bottom plate is sleeved on the lower section and can slide along the lower section, and the sliding distance of the adjustable bottom plate is limited by a stop block and a limiting column. The limiting column is arranged at the bottom of the adjustable bottom plate, so that the adjustable bottom plate is prevented from sliding down from the lower section. The upper surface of adjustable bottom plate and the cooperation of the lower surface backstop of dog, the through-hole has been seted up at the middle part of adjustable bottom plate, and the through-hole can be straight notch shape, circular, oval, and the diameter that the size of through-hole is greater than the hypomere makes adjustable bottom plate can realize its lower surface and the laminating on slope ground at certain limit angle regulation.
When the telescopic bracing piece constantly descends in soil, adjustable bottom plate passes through-hole self-adaptation ground angle of adjustment for the lower surface can with the ground laminating of slope, increase lifting surface area, the upper surface of adjustable bottom plate cooperates with the bottom surface backstop of dog simultaneously, prevents that the telescopic bracing piece from further sinking to in the soil, plays stable supporting role.
Furthermore, the contact surface of the stop block and the adjustable bottom plate is an arc surface, and the radian of the upper surface of the adjustable bottom plate is greater than that of the lower surface of the stop block. The contact surface of the stop block and the adjustable bottom plate is an arc surface, wherein the lower surface of the stop block can be a convex surface, the upper surface of the adjustable bottom plate can be a concave surface, and the upper surface of the stop block can also be a concave surface, and the lower surface of the adjustable bottom plate can be a convex surface. Considering the angle self-adaptive adjustment of the adjustable bottom plate, the radian of the upper surface of the adjustable bottom plate is larger than that of the lower surface of the stop block, so that after the angle is changed, the adjustable bottom plate and the stop plate have larger contact cambered surfaces, the stop block cooperation effect between the adjustable bottom plate and the stop block is improved, and the support stability is improved.
Further, the bottom of the adjustable bottom plate is provided with a fixed block, the fixed block comprises a base, a contact part is arranged on the bottom surface of the base, the base is made of rigid materials, and the contact part is made of flexible materials. In order to improve the combination strength of the adjustable bottom plate and the soil, a fixing block is arranged at the bottom of the adjustable bottom plate. The fixed block includes base and contact site two parts, and wherein the base is fixed in adjustable bottom surface, and the contact site sets up on the bottom surface of base. The base can be made by rigid material such as metal, produces deformation hardly when the atress, can promote the effect of grabbing of adjustable bottom plate, and the contact site can be made by flexible material such as rubber, produces certain deformation after the atress, reduces the unevenness that soil surface grit caused to a certain extent to this further improves the effect of grabbing ground and the roughness of adjustable bottom plate, improves the stability of supporting. Preferably, the thickness of the base and the contact portion is 2: 1. Preferably, the distance between adjacent fixing blocks is gradually reduced along the direction from the edge of the adjustable bottom plate to the center.
Furthermore, a rotary oil cylinder is arranged in the mounting frame, and a rotating shaft of the rotary oil cylinder is embedded in the suspension arm.
The invention further provides an excavator based on the hoisting assembly, wherein the excavator comprises main components such as a chassis, a vehicle body, a movable arm and a front arm of the existing excavator, and the components are of the existing structures and are not described again. The technical scheme also comprises any one of the hoisting assemblies described in the foregoing, and the hoisting assembly is detachably fixed on the forearm. The detachable mode of the hoisting component and the front arm comprises a plurality of modes such as threaded connection, clamping connection, fastener connection and the like.
As a preferred mode of connection, the forearm and the lifting assembly are connected by a screw thread. In order to simplify the mounting and to improve the stability of the threaded connection, the upper surface of the forearm is provided with a reinforcement boss, the upper surface of which is parallel to the horizontal plane. The upper surface of the front arm of the excavator is an inclined surface, so that threads are not convenient to install. Therefore, the reinforcing boss is arranged on the upper surface of the front arm, the upper surface of the reinforcing boss is parallel to the horizontal plane, the bolt can penetrate through the front arm and the mounting frame vertically to fix the front arm and the mounting frame, the stability of threaded connection can be further enhanced, and the problem of strength weakening caused after the front arm is perforated is solved.
Based on the hoisting assembly and the excavator applying the hoisting assembly, the invention also provides a hoisting method. Firstly, the hoisting assembly is installed on a construction machine, and then the hoisting method comprises a first hoisting process and/or a second hoisting process, wherein the first hoisting process is used for conventional hoisting and comprises the following steps: (A1) fixing the position of the suspension arm in the mounting rack; (A2) removing the support component; (A3) the rotation of the construction machine is utilized to lift the goods. The second lifting process is used for heavy object lifting, and comprises the following steps: (B1) fixing a front arm, a movable arm, a vehicle body and a chassis of the construction machine; (B2) mounting a support component at the bottom of the mounting rack; (B3) and controlling the suspension arm in the mounting frame to rotate so as to lift the goods.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, through the lifting assembly with the modular design, workers are allowed to select the first or second lifting process according to the weight of the goods, so that the construction is more flexible and the working efficiency is higher;
2. according to the invention, by installing the supporting component, the stability of the vehicle body can be improved when a heavy weight is hoisted, the risk of overturning the vehicle body is eliminated, in addition, when the goods are hoisted, the weight of the goods and the suspension arm is borne by the supporting component, the operation safety is improved, and the suspension arm is connected with the supporting component, so that the time for installing the hoisting device is shortened, and the working efficiency is improved;
3. the length of each telescopic supporting rod can be independently adjusted through the telescopic supporting rod combination to adapt to rugged and complex ground structures in mountainous areas, meanwhile, the length of each telescopic supporting rod can be rapidly adjusted in the supporting process to adapt to rugged ground through optimizing the structure of each telescopic supporting rod, the bearing strength of each telescopic supporting rod can be remarkably improved through the threaded connection mode of the first threads and the second threads with the internal threads of the upper section and the lower section, and the stability and the safety of hoisting operation are improved;
4. according to the invention, the sleeve is arranged at the bottom of the mounting frame, the top of the sleeve is hinged with the bottom of the mounting frame, so that the sleeve can adjust the angle at the bottom of the mounting frame, the sleeve is of a hollow structure, and the top end of the telescopic supporting rod is in interference fit with the sleeve, so that the telescopic supporting rod can be hinged with the mounting frame to allow the telescopic supporting rod to adjust the supporting angle, and can be made of light materials such as 40Cr on the premise of ensuring the supporting strength;
5. according to the invention, the bottom of the telescopic supporting rod is improved, and the adjustable bottom plate is matched with the stop of the baffle plate, so that when the telescopic supporting rod sinks in soil, the angle of the adjustable bottom plate is adaptively adjusted through the through hole, the lower surface of the adjustable bottom plate can be attached to the inclined ground, the stress area is increased, meanwhile, the upper surface of the adjustable bottom plate is matched with the stop of the bottom surface of the stop block, the telescopic supporting rod is prevented from further sinking into the soil, and a stable supporting effect is achieved;
6. according to the adjustable bottom plate, the fixing block is arranged at the bottom of the adjustable bottom plate, so that the ground grabbing effect of the adjustable bottom plate can be improved, meanwhile, the contact part made of the flexible material generates certain deformation after being stressed, and unevenness caused by sand and stone on the surface of soil is reduced to a certain extent, so that the ground grabbing effect and the flatness of the adjustable bottom plate are further improved, and the stability of the support is improved;
7. the hoisting assembly has the advantages of simple structure, convenient transportation, assembly and disassembly, simple production and processing, low cost, strong maintainability and reliable quality, and adopts common parts or assemblies in the current market.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of a lifting assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a lifting assembly according to another embodiment of the present invention;
FIG. 3 is a schematic view of a portion of a telescopic supporting rod according to an embodiment of the present invention;
FIG. 4 is a schematic view of the bottom end of the retractable support pole according to one embodiment of the present invention;
FIG. 5 is a schematic view of a telescoping support pole in accordance with an embodiment of the present invention secured in a sloped soil;
FIG. 6 is a schematic view of an adjustable base plate of a telescopic support rod according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an excavator applying a hoisting assembly for construction according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-lifting hook, 2-lifting rope, 3-lifting rope connecting piece, 4-lifting arm, 5-rotary oil cylinder, 6-mounting rack, 71-supporting column, 72-telescopic supporting rod, 721-upper segment, 722-first thread, 723-handle, 724-middle segment, 725-second thread, 726-lower segment, 727-stop block, 728-adjustable bottom plate, 729-limiting column, 730-fixed block, 8-front arm, 9-vehicle body, 10-movable arm, 11-chassis and 12-inclined ground.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1:
a lifting assembly as shown in fig. 2, which comprises a lifting hook assembly, wherein the lifting hook assembly comprises a lifting arm 4, one end of the lifting arm 4 is provided with a sling connector 3, the sling connector 3 is connected with a lifting hook 1 through a sling 2, the other end of the lifting arm 4 is rotatably arranged in an installation frame 6, a rotary oil cylinder 5 is arranged in the installation frame 6, a rotating shaft of the rotary oil cylinder 5 is embedded in the lifting arm 4, and the bottom of the installation frame 6 is detachably connected with a support assembly; the supporting component comprises three telescopic supporting rods 72, the length of each telescopic supporting rod 72 can be adjusted, and the tops of the telescopic supporting rods 72 are hinged with the bottom surface of the mounting frame 6.
In some embodiments, the number of the telescopic support rods 72 may be one or more.
In some embodiments, the sleeve is arranged at the bottom of the mounting frame, the top of the sleeve is hinged to the bottom of the mounting frame, so that the sleeve can adjust the angle at the bottom of the mounting frame, the sleeve is of a hollow structure, the top end of the telescopic supporting rod is in interference fit with the sleeve, the telescopic supporting rod can be hinged to the mounting frame to allow the telescopic supporting rod to adjust the supporting angle, and the telescopic supporting rod can be made of a light material on the premise of ensuring the supporting strength. Preferably, the telescopic supporting rod is made of 40 Cr.
In some embodiments, as shown in fig. 1, the support assembly may also employ support columns 71 with a constant length to further enhance load bearing and stability during flat ground construction.
Example 2:
on the basis of embodiment 1, as shown in fig. 3, a preferred structure of the telescopic supporting rod 72 includes an upper section 721, a middle section 724, and a lower section 726, wherein an upper end of the middle section 724 is provided with an upper section connecting part, the upper section connecting part is provided with a first thread 722, a lower end of the middle section 724 is provided with a lower section connecting part, the lower section connecting part is provided with a second thread 725, wherein the first thread 722 matches with the internal thread of the upper section 721, the second thread 725 matches with the internal thread of the lower section 726, and the first thread 722 and the second thread 725 rotate in opposite directions.
Above-mentioned structure not only can adjust the length of telescopic bracing piece in order to adapt to the uneven ground of height fast in the support process, and the bearing strength of telescopic bracing piece can be improved to first screw thread, second screw thread and the internal thread threaded connection mode of upper segment, hypomere in addition apparent, improves the stability and the security that lift by crane the operation.
Example 3:
on the basis of the above embodiment, as shown in fig. 4, the bottom end of the lower section 726 of the telescopic supporting rod 72 is a tip end, a stopper 727 and a limit column 729 positioned below the stopper 727 are fixed on the lower section 726; the adjustable baffle plate 728 is positioned between the stop 727 and the limiting column 729, a through hole is formed in the adjustable baffle plate 728, the through hole is used for being sleeved on the lower section 726, and the size of the through hole is larger than the diameter of the lower section 726; the contact surface of the stop 727 and the adjustable bottom plate 728 is an arc surface, and the radian of the upper surface of the adjustable bottom plate 728 is greater than that of the lower surface of the stop 727.
As shown in fig. 5, for the inclined ground, when the telescopic supporting rod continuously descends in the soil, the angle of the adjustable bottom plate is adaptively adjusted through the through hole, so that the lower surface can be attached to the inclined ground, the stress area is increased, and meanwhile, the upper surface of the adjustable bottom plate is matched with the bottom surface stop of the stop block, so that the telescopic supporting rod is prevented from further sinking into the soil, and a stable supporting effect is achieved.
Example 4:
as shown in fig. 6, on the basis of the above embodiment, the bottom of the adjustable bottom plate 728 is provided with a fixed block 730, the fixed block 730 comprises a base, the bottom surface of the base is provided with a contact part, the base is made of a rigid material, and the contact part is made of a flexible material.
In some embodiments, the base may be made of metal such as aluminum alloy and steel, and the contact portion may be made of rubber material such as nitrile rubber and fluororubber.
Example 5:
as shown in fig. 7, an excavator comprises a chassis 11, a vehicle body 9, a movable arm 10 and a front arm 8, and further comprises a hoisting assembly in any one of the above embodiments, wherein the hoisting assembly is detachably fixed on the front arm 8; the upper surface of forearm 8 is provided with strengthens the boss, the upper surface of strengthening the boss is on a parallel with the horizontal plane.
Through the setting, not only allow the staff to select the first kind or the second kind according to the weight of goods and lift by crane the process, the construction is more nimble, work efficiency is higher, simultaneously through the installation supporting component, can improve automobile body stability when lifting by crane heavier heavy weight thing, eliminates the risk that the automobile body topples. In addition, when the goods are lifted, the weight of the goods and the suspension arm is borne by the supporting component, so that the operation safety is improved, and the suspension arm is connected with the supporting component, so that the time for installing the lifting device is shortened, and the working efficiency is improved.
Example 6:
on the basis of the above embodiment, a hoisting method of a hoisting assembly mounted on a construction machine further includes a first hoisting process and/or a second hoisting process, wherein:
the first hoisting process is directed to lighter conventional cargo, the first hoisting process comprising the steps of:
(A1) fixing the position of the suspension arm in the mounting rack;
the boom and the mounting frame do not move relatively by fixing the rotary oil cylinder;
(A2) removing the support component;
taking out the top end of the telescopic supporting rod from a sleeve hinged at the bottom of the mounting frame;
(A3) hoisting the goods by utilizing the rotation of the construction machine;
the front arm and the movable arm of the excavator rotate horizontally, and the vehicle body rotates horizontally on the chassis, so that a large working space and a large lifting range can be realized when light goods are lifted.
As shown in fig. 7, the second hoisting process is for heavier cargo, the second hoisting process comprising the steps of:
(B1) fixing a front arm, a movable arm, a vehicle body and a chassis of the construction machine;
fixing each part of the excavator to improve stability;
(B2) mounting a support component at the bottom of the mounting rack;
inserting telescopic support rods into sleeves at the bottom of the mounting frame, inserting the telescopic support rods into the soil and the inclined ground 12 after adjusting the angles of the telescopic support rods, adjusting the angles of the adjustable bottom plate to enable the bottom surface of the adjustable bottom plate to be in contact with the soil, then rotating the middle sections of the telescopic support rods to adjust the total length of the support rods, enabling the adjustable bottom plate to be matched with the stop blocks, and meanwhile compacting the adjustable bottom plate on the soil to form stable support;
(B3) controlling a suspension arm in the mounting frame to rotate so as to lift the goods;
the rotary oil cylinder in the mounting frame is controlled to drive the suspension arm to rotate, so that operation in a horizontal plane is realized.
In the second lifting process, the supporting component arranged below the mounting frame enables the supporting point to move forwards to the front end of the excavator, and the stability of the excavator body is obviously improved.
It will be appreciated by those skilled in the art that although the lifting method releasably secures the lifting assembly to the front end of the excavator, the lifting assembly could equally be secured to the front end of other construction machines, such as the compound working mechanism of patent CN 203498883U.
As used herein, "first," "second," etc. (e.g., first thread, second thread, etc.) are used only for clarity of description to distinguish between corresponding parts, and are not intended to limit any order or to emphasize importance, etc. Further, the term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a lifting assembly, includes the lifting hook subassembly, the lifting hook subassembly includes davit (4), its characterized in that, the one end of davit (4) rotationally sets up in mounting bracket (6), mounting bracket (6) bottom detachably is connected with supporting component.
2. A lifting assembly as claimed in claim 1, wherein the support assembly comprises at least one telescopic support bar (72), the length of the telescopic support bar (72) being adjustable, the top of the telescopic support bar (72) being hingedly connected to the underside of the mounting bracket (6).
3. A hoisting assembly according to claim 2, characterized in that the telescopic support rod (72) comprises an upper section (721), a middle section (724) and a lower section (726), the upper end of the middle section (724) is provided with an upper section connection part, the upper section connection part is provided with a first screw thread (722), the lower end of the middle section (724) is provided with a lower section connection part, the lower section connection part is provided with a second screw thread (725), wherein the first screw thread (722) is matched with the internal screw thread of the upper section (721), the second screw thread (725) is matched with the internal screw thread of the lower section (726), and the first screw thread (722) and the second screw thread (725) rotate in opposite directions.
4. The hoisting assembly of claim 3 wherein the lower segment (726) has a tip end at its bottom end, a stop (727) fixed to the lower segment (726), and a limit post (729) located below the stop (727); still including being located adjustable bottom plate (728) between dog (727) and spacing post (729), seted up the through-hole on adjustable baffle (728), the through-hole is used for the cover to establish on hypomere (726), and the size of through-hole is greater than the diameter of hypomere (726).
5. A lifting assembly as claimed in claim 4, wherein the contact surfaces of the stop (727) and the adjustable base plate (728) are curved, the curvature of the upper surface of the adjustable base plate (728) being greater than the curvature of the lower surface of the stop (727).
6. A lifting assembly as claimed in claim 4, wherein the adjustable base plate (728) is provided at its bottom with a fixing block (730), the fixing block (730) comprising a base, the bottom surface of the base being provided with a contact portion, the base being made of a rigid material and the contact portion being made of a flexible material.
7. A hoisting assembly as claimed in claim 1, characterized in that a swivel cylinder (5) is arranged in the mounting frame (6), the swivel cylinder (5) having its axis of rotation embedded in the boom (4).
8. Excavator comprising a chassis (11), a body (9), a boom (10) and a forearm (8), characterized in that it further comprises a lifting assembly according to any of claims 1 to 7, said lifting assembly being removably fixed to the forearm (8).
9. Excavator according to claim 8, characterized in that the upper surface of the forearm (8) is provided with a reinforcement boss, the upper surface of which is parallel to the horizontal plane.
10. A hoisting method based on a hoisting assembly according to any one of claims 1 to 7, which is mounted on a construction machine, characterized in that the hoisting method further comprises a first hoisting process and/or a second hoisting process, wherein:
the first hoisting process comprises the following steps:
(A1) fixing the position of the suspension arm in the mounting rack;
(A2) removing the support component;
(A3) hoisting the goods by utilizing the rotation of the construction machine;
the second hoisting process comprises the following steps:
(B1) fixing a front arm, a movable arm, a vehicle body and a chassis of the construction machine;
(B2) mounting a support component at the bottom of the mounting rack;
(B3) and controlling the suspension arm in the mounting frame to rotate so as to lift the goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910909837.0A CN110626962A (en) | 2019-09-25 | 2019-09-25 | Hoisting assembly, excavator applying same and hoisting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910909837.0A CN110626962A (en) | 2019-09-25 | 2019-09-25 | Hoisting assembly, excavator applying same and hoisting method |
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| CN110626962A true CN110626962A (en) | 2019-12-31 |
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| CN201910909837.0A Pending CN110626962A (en) | 2019-09-25 | 2019-09-25 | Hoisting assembly, excavator applying same and hoisting method |
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| CN205679784U (en) * | 2016-06-07 | 2016-11-09 | 中国人民解放军96276部队 | A kind of rain sensor with level(l)ing mechanism |
| CN207364573U (en) * | 2017-11-06 | 2018-05-15 | 山东省交通规划设计院 | A kind of slope of highway deforms photographic measurement support device |
| CN208440193U (en) * | 2018-06-29 | 2019-01-29 | 河南省黄河防爆起重机有限公司 | A kind of hanging apparatus for vertical fluted disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030189U (en) * | 1988-06-23 | 1989-01-04 | 杨家凤 | Domestic hand hoist |
| CN1347818A (en) * | 2000-10-03 | 2002-05-08 | 株式会社小松制作所 | Speed control apparatus for working vehicle and its control method |
| CN101660417A (en) * | 2009-07-17 | 2010-03-03 | 中煤第五建设公司 | Vertical shaft hanging scaffold stabilizing device |
| CN203781691U (en) * | 2014-04-10 | 2014-08-20 | 大连佳秀百隆新材料有限公司 | Multi-drive electric hoist |
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