CN102451989B - Cargo boom and self-dismounting device thereof - Google Patents

Abstract

The invention provides a self-disassembling device which is used for disassembling and assembling parts of engineering machinery and comprises a supporting leg connected with a part to be disassembled and an supporting leg oil cylinder hinged with the supporting leg, wherein a telescopic oil cylinder is hinged between the supporting leg and the supporting leg oil cylinder, and the telescopic oil cylinder stretches to drive the supporting leg oil cylinder to turn in a vertical plane relative to the supporting leg. The self-disassembling device provided by the invention is high in safety, convenient to operate and high in efficiency. In addition, the invention also provides a crane boom with the self-disassembling device.

Description

Lifting arm and self-disassembling device thereof

technical field

The invention relates to the technical field of mechanical disassembly and assembly, in particular to a self-disassembly and assembly device. Furthermore, the present invention also relates to a lifting device, in particular to a lifting arm.

Background technique

In recent years, with the development of the economy, large-scale construction projects have continued to increase, and the application of cranes has become more and more extensive, and it is developing in the direction of super-large tonnage, and the weight of the whole vehicle is increasing. Domestic road traffic safety regulations have relevant regulations on the driving weight of the whole vehicle, which cannot exceed a certain weight. Therefore, some parts on the vehicle must be disassembled when the crane is transferred to meet the relevant regulations.

The boom occupies a large proportion in the weight of the whole machine, generally reaching 20%-25%, and the proportion will be higher for large tonnage. Removing the jib contributes a lot to the weight reduction of the main engine when it is running. Therefore, when the crane is running, the jib needs to be dismantled; after arriving at the job site, the jib is assembled to the whole crane.

At present, for small cranes, a hoisting device can be used to hoist the boom; for the boom of large or super-large cranes, due to its very large weight and volume, no matter in the factory or in the field Operation, the disassembly and assembly of its boom mostly use two or more hoisting equipment to cooperate to disassemble and assemble the boom. Especially when disassembling and assembling in field operations, due to the harsh working environment, the requirements for hoisting equipment are also correspondingly increased. When using hoisting equipment to install the boom, it is necessary to make preparations before installation, then operate the hoisting equipment to lift the boom, keep the boom stable, hoist it to the crane, and cooperate with manpower to connect and fasten it. .

It can be seen that the disassembly method in the prior art is limited by many factors such as the site and the hoisting equipment, and because the parts to be disassembled are hoisted for operation, a little carelessness will easily lead to safety accidents, which is more dangerous. In addition, for ultra-large cranes, multiple hoisting equipment must be used for disassembly and assembly at the same time, which requires a high degree of cooperation in operation and low installation and disassembly efficiency.

Therefore, it is a technical problem to be solved by those skilled in the art to provide a self-disassembling device with high safety, convenient disassembly and assembly and high efficiency.

Contents of the invention

The purpose of the present invention is to provide a self-disassembling device with high safety, convenient disassembly and assembly, and high efficiency. In addition, another object of the present invention is to provide a boom with the above self-disassembling device.

In order to solve the above-mentioned technical problems, the present invention provides a self-disassembling device, which is used for the disassembly and assembly of construction machinery parts, including a leg connected to the part to be disassembled and a leg oil cylinder hinged to the leg. A telescopic oil cylinder is hinged between the outrigger and the outrigger oil cylinder, and the expansion and contraction of the outrigger oil cylinder drives the outrigger oil cylinder to turn over in a vertical plane relative to the outrigger.

Preferably, it also includes a leg plate connected to the bottom of the leg cylinder.

Preferably, there are at least two sets of matched legs and leg oil cylinders, and each set of legs and leg oil cylinders is sequentially arranged along the length direction of the component to be disassembled.

Preferably, a front support seat is provided between the front outrigger oil cylinder and the front outrigger plate in front of the parts to be disassembled, and the lower end of the front outrigger oil cylinder is fitted with the ball hinge of the front support seat; the front support seat A cavity with an opening downward is provided at the bottom, and a boss inserted into the cavity is provided on the front foot plate, and there is a gap between the circumferential side wall of the cavity and the outer peripheral surface of the boss. predetermined distance.

Preferably, a rear support seat is provided between the rear outrigger oil cylinder and the rear outrigger plate behind the parts to be disassembled, and the lower end of the rear outrigger oil cylinder is fitted with the ball hinge of the rear support seat; the rear support A foot plate oil cylinder is arranged between the seat and the rear foot plate, and the expansion and contraction of the foot plate oil cylinder drives the rear outrigger oil cylinder to slide along the slideway provided on the rear foot plate.

Preferably, both the upper edges of the front support base and the rear support base have openings, and when the front outrigger pan is rotated and stowed relative to the front outrigger oil cylinder and the rear outrigger pan is closed relative to the rear support When the leg oil cylinder is turned and stowed, both the front outrigger oil cylinder and the rear outrigger oil cylinder are placed in the corresponding openings.

Preferably, the outrigger is provided with a first pin hole connected with the outrigger cylinder, and the outrigger cylinder is provided with a second pin hole matched with the first pin hole and used for connecting the The third pin hole of the foot plate, the fourth pin hole matched with the third pin hole is arranged on the foot plate, and in the retracted state, between the first pin hole and the second pin hole , The third pin hole and the fourth pin hole are positioned by a limiting component.

Preferably, the legs are hinged to the component to be disassembled, and the axis of the hinge is perpendicular to the horizontal plane.

Preferably, the outrigger and the outrigger cylinder are respectively provided with matching pins and pin holes, and when the outrigger cylinder is overturned to a vertical state, the pin is inserted into the pin hole.

The present invention also provides a boom, comprising a boom head, a boom body and a boom tail, the boom tail is used to connect with the crane turntable, and the boom also includes the self-disassembly device described in any one of the above .

The self-disassembling device provided by the present invention includes a leg and a leg oil cylinder, the leg is connected with the equipment to be disassembled, the leg and the leg oil cylinder are connected by a pin shaft, and between the leg and the leg oil cylinder A telescopic oil cylinder is also provided. The expansion or contraction of the telescopic oil cylinder can be controlled, and the outrigger oil cylinder can be adjusted to flip in the vertical plane around the hinge point between it and the outrigger. In the non-disassembly working state, the telescopic cylinder is in the extended state, and the outrigger cylinder is folded relative to the outrigger; when it is necessary to assemble the parts to be disassembled with the main body, transport the equipment to be disassembled to the designated position and retract it. Telescopic oil cylinder, the outrigger cylinder rotates relative to the hinge shaft between it and the outrigger, the outrigger cylinder expands, and supports the parts to be disassembled, so that the main body and the connecting part of the parts to be disassembled are aligned to achieve assembly After the request, the components are assembled and fixed by the operation of the staff. The disassembly process is opposite, after the parts to be disassembled are supported, the connecting parts between the parts to be disassembled and the main body are removed, and the main body drives away to realize disassembly. It can be seen that the self-disassembly device provided by the present invention does not need to lift and transfer the equipment to be disassembled, and only needs to drive the hydraulic cylinder to expand and contract during use to reliably complete the disassembly operation, which has high safety and can be operated simultaneously. It is convenient and efficient, thus greatly reducing the operating cost.

In a preferred embodiment, the self-disassembly device provided by the present invention includes at least two sets of matching legs and leg cylinders, and each set of legs and the leg cylinders are along the line to be disassembled. The part length direction is set sequentially. For some large tonnage parts to be disassembled, it is preferable to use the cooperation of multiple sets of outriggers and outrigger cylinders, so that the disassembly and assembly operations can be performed more stably.

In another preferred embodiment, a front support seat is provided between the front outrigger oil cylinder and the front outrigger plate in front of the parts to be disassembled, and the lower end of the front outrigger oil cylinder is connected to the ball hinge of the front support seat. Cooperate; the bottom of the front support seat is provided with a cavity with an opening downward, the front foot plate is provided with a boss inserted into the cavity, and the circumferential side wall of the cavity is in contact with the convex There is a predetermined distance between the outer peripheral surfaces of the stages. Reserving a gap between the inner wall of the connection cavity and the side wall of the boss can ensure the radial displacement of the outrigger cylinder relative to the outrigger plate within a predetermined range, so that the cooperation between the equipment to be disassembled and the main body can be fine-tuned to ensure self-disassembly. Accuracy, improve efficiency.

Description of drawings

Fig. 1 is a schematic diagram of a self-disassembling device connected to a boom in a specific embodiment provided by the present invention;

Fig. 2 is a schematic diagram of the state in which the self-disassembling device shown in Fig. 1 is connected to the boom and folded;

Fig. 3 is a schematic diagram of the unfolded structure of the front outrigger and the front outrigger cylinder of the self-disassembling device in a specific embodiment provided by the present invention;

Fig. 4 is a cross-sectional view of the connection relationship between the front outrigger oil cylinder and the front outrigger plate of the self-disassembling device shown in Fig. 3;

Fig. 5 is a schematic diagram of the unfolded structure of the rear outrigger and the rear outrigger oil cylinder of the self-disassembling device in another specific embodiment provided by the present invention;

Fig. 6 is a structural schematic diagram of the connection relationship between the rear outrigger cylinder and the rear outrigger plate of the self-disassembling device shown in Fig. 5;

Fig. 7 is a schematic diagram of a specific embodiment of the boom with self-disassembling device provided by the present invention;

Figure 8-1 is the first step of installing the boom on the crane by the self-disassembly device provided by the present invention;

Figure 8-2 is the second step of installing the boom on the crane by the self-disassembling device provided by the present invention;

Figure 8-3 is the third step of installing the boom on the crane by the self-disassembling device provided by the present invention;

Fig. 8-4 is step 4 of installing the boom on the crane by the self-disassembling device provided by the present invention;

Fig. 8-5 shows step 5 of installing the jib on the crane by the self-disassembling device provided by the present invention.

Detailed ways

The core of the present invention is to provide a self-disassembling device with high safety, convenient disassembly and assembly, and high efficiency. Another core of the present invention is to provide a boom with the above self-disassembly device.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 and Fig. 2, Fig. 1 is a schematic diagram of the self-detachable device provided by the present invention connected to the boom and Fig. 2 is a schematic diagram of the self-detachable device shown in Fig. 1 connected to the boom.

Without loss of generality, the parts to be disassembled and assembled in this embodiment are described by taking a boom as an example. As shown in the figure, the self-disassembly device provided by the present invention includes a support leg 3 and a support leg oil cylinder 2, and the support leg 3 is connected with the parts to be disassembled, that is, connected with the boom 1 in the figure, the support leg 3 and the support leg The oil cylinders 2 are connected by a pin 4, and a telescopic oil cylinder 5 is hinged between the outrigger oil cylinder 2 and the outrigger 3. By operating the expansion and contraction of the telescopic oil cylinder 5, the outrigger oil cylinder 2 can be controlled on the vertical plane relative to the outrigger 3. to flip.

The specific installation process is that in the non-working state, the telescopic cylinder 5 is extended, and the outrigger cylinder 2 is in the retracted state, as shown in Figure 2; when the boom needs to be installed, the telescopic cylinder 5 is retracted, Drive the outrigger cylinder 2 to rotate relative to the pin shaft 4, realize the inversion of the outrigger cylinder 2 on the vertical plane relative to the outrigger 3, make the outrigger cylinder 2 stand upright on the ground, thereby supporting the boom 1, and then drive the crane Towards the boom 1, align the connecting hinge point between the crane turntable and the boom 1 for assembly. After the assembly is finished, the outrigger oil cylinder 2 is put away again. The disassembly process is opposite to the above installation process.

With the above-mentioned self-disassembly device provided by the present invention, it is not necessary to lift and transfer the parts to be disassembled for disassembly, but to support the parts to be disassembled for installation and disassembly operations, which has high safety and is easy to operate ,efficient.

By controlling the telescopic length of the outrigger oil cylinder 2, the height of the parts to be disassembled can also be changed to adapt to different working environments and facilitate the adjustment of the matching relationship.

Further, the connection between the outrigger 3 and the jib 1 is hinged, that is, connected by a hinged shaft 6, and the axis of the hinged shaft 6 is perpendicular to the ground.

The outrigger 3 is hinged with the jib 1, and the outrigger 3 can be turned horizontally relative to the jib 1, which can further improve the compactness of the overall structure; The mounting device is disassembled from the boom 1 to reduce the self-weight of the boom 1 and ensure the working performance of the crane. Of course, other ways of connection between the outrigger 3 and the jib 1 can also be used, such as welding. In this way, the outrigger 3 cannot be turned over relative to the jib 1 .

In addition, the self-disassembling device provided by the present invention may also include a leg plate 7 connected to the bottom of the leg cylinder 2 .

Setting the foot plate 7 can increase the contact area between the self-dismounting device and the ground, so that the boom 1 is more stable during the disassembly process, and can adapt to the environment of different places, especially for field operations. The scope of use of the dismounting device.

For parts to be disassembled and assembled with large dimensions, due to the relatively large weight of the boom, only one set of outriggers 3 and outrigger cylinders 2 cannot support the boom 1. At this time, multiple sets of A combination of outriggers and outrigger cylinders. It can be understood that the number of outriggers and outrigger oil cylinders can be specifically set according to actual needs, as long as the requirements for use are met, they are all within the scope of protection claimed in this application.

As shown in FIG. 1 , along the length direction of the boom 1 , two sets of matching outriggers 3 and outrigger cylinders 2 are sequentially arranged to improve the working stability of the self-disassembling device. Moreover, in order to make the jib 1 receive even force, symmetrical outriggers 3 and outrigger cylinders 2 can also be respectively arranged on both sides of the jib 1 while being arranged in sequence along the length direction of the jib 1 .

Please refer to Figure 3 and Figure 4, Figure 3 is a schematic diagram of the unfolded structure of the front outrigger and the front outrigger cylinder of the self-disassembly device in a specific embodiment provided by the present invention, and Figure 4 is the self-disassembly device shown in Figure 3 Sectional view of the connection relationship between the front outrigger cylinder and the front outrigger plate.

As shown in the figure, the front outrigger and the front outrigger oil cylinder located in front of the parts to be disassembled can adopt the specific structure in this embodiment. The front leg plate 71 is provided with a front support seat 11 connected to the front leg oil cylinder 21, the front leg oil cylinder 21 and the front support seat 11 are spherical hinges, and the bottom of the front support seat 11 is provided with a cavity 14 with an opening downward. , the front foot plate 71 is provided with a boss 15 inserted into the cavity 14 , and there is a predetermined distance between the side wall of the cavity 14 and the outer peripheral surface of the boss 15 .

Setting the front support seat 11 facilitates the stable connection between the outrigger cylinder 21 and the outrigger plate 71 . Due to the influence of the environment and operation accuracy during the disassembly operation, it is necessary to adjust the position of the equipment to be disassembled in and out. On the front support seat 11 and the front foot plate 71, respectively set the matching cavity 14 and the boss 15, and there is a predetermined distance between the side wall of the cavity 14 and the outer peripheral surface of the boss 15, adopt such a connection structure , the front outrigger oil cylinder 21 can be allowed to have relative radial movement relative to the front outrigger plate 71, so as to realize the fine adjustment of the equipment to be disassembled and align the matching position of the equipment to be disassembled and the main body.

In addition, in order to avoid the relative movement of the front outrigger cylinder 21 relative to the front outrigger plate 71 causing excessive wear and tear on the equipment, the friction coefficient is reduced. The slider 13 may be arranged between the inner wall of the cavity 14 and the upper surface of the boss 15, or other structures capable of reducing the coefficient of friction between the two.

When the front outrigger oil cylinder 21 moves relative to the front outrigger plate 71, in order to avoid excessive shaking and the situation that the front support seat 11 slips out of the boss 15, a limit position can be set between the boss 15 and the cavity 14 Components, the limiting component can be the baffle plate 16 in FIG. 4 , and can also be other components that can prevent the front support seat 11 from sliding too far. When adopting the structure of the baffle plate 16, the baffle plate 16 can be connected with the side wall of the cavity 14, and at the same time, a certain distance is reserved between the baffle plate 16 and the boss 15, so as to ensure that the front leg oil cylinder 21 can be positioned relative to the front leg. The disc 71 performs a certain movement.

The cavity 14 adopted in this specific embodiment can directly process the cavity 14 with the opening downward at the bottom of the front support seat 11; the cavity 14 can also be separately set as a part, and the cavity 14 is opened to The bottom is connected with the front support seat 11, and the two can adopt structural forms such as bolt connection or welding. It should be pointed out that the shape of the front support seat 11 can be set arbitrarily without affecting the cooperation between the cavity 14 and the boss 15 . The shape of the cavity 14 can be circular or elliptical, as long as it can realize the supporting function of the front support base 11 and ensure the relative movement of the front leg oil cylinder 11 relative to the front leg plate 71, which is convenient for processing.

The structure of the boss 15 can be a shape in which the upper part protrudes relative to the middle part and the middle part is recessed relative to the bottom as shown in the figure, or the upper part protrudes relative to the lower part and the lower part is as wide as possible.

The ball hinge cooperation structure of the front support leg oil cylinder 21 and the front support seat 11 is that the bottom of the front support leg oil cylinder 21 is a sphere, and the front support seat 11 is provided with a groove cooperating with the front support leg oil cylinder 21 bottom spheres.

Further, there is an opening 17 on the upper edge of the front support base 11 , and when the front outrigger plate 71 is rotated and stowed relative to the front outrigger oil cylinder 21 , the front outrigger oil cylinder 21 is placed in the opening 17 in the stowed state.

The opening 17 can cooperate with the turning of the front leg plate 71 relative to the front leg oil cylinder 21 to realize the extension and retraction of the front leg plate 71 . The size of the opening 17 can be set according to the diameter of the lower sphere of the front outrigger oil cylinder 21. Preferably, the diameter of the opening 17 matches the diameter of the lower sphere of the front outrigger oil cylinder 21. In the retracted state, the front outrigger oil cylinder 21 is against the In the opening 17, the front outrigger plate 71 completely abuts against the front outrigger oil cylinder 21 to ensure that the outer dimensions are minimized in the stowed state.

In addition, the front outrigger 31 is provided with a first pin hole 9 for connecting the front outrigger oil cylinder 21, and the front outrigger oil cylinder 21 is provided with a second pin hole 8 matching with the first pin hole 9 and used for connecting the front outrigger cylinder 21. The third pin hole 10 of the foot plate 71 and the fourth pin hole 12 matched with the third pin hole 10 are arranged on the front foot plate 71 . When the front outrigger cylinder 21 is retracted relative to the front outrigger 31 , the positions between the first pin hole 9 and the second pin hole 8 , and between the third pin hole 10 and the fourth pin hole 12 are positioned by limiting components.

The above-mentioned pin holes are provided on the front leg 31, the front leg oil cylinder 21 and the front leg plate 71, because the front leg oil cylinder 21 can be relatively Flip over, in order to ensure the stability of the relative position of the components when in the stowed state, and avoid abnormal deployment, it is necessary to place the front outrigger cylinder 21 and the front outrigger 31, the front outrigger plate 71 and the front outrigger cylinder 21 Set limit parts between.

The above-mentioned limiting parts may be inserted between the above-mentioned pin holes by using parts such as pin shafts and bolts, or may be other parts capable of positioning. When the self-disassembling device is in the retracted state, the first pin hole 9 and the second pin hole 8, the third pin hole 10 and the fourth pin hole 12 are connected by pin shafts, bolts, iron wires, etc. When the dismounting device is working, unplug the above-mentioned parts interspersed between the pin shafts, and then perform the installation or disassembly operation.

Please refer to Fig. 5 and Fig. 6. Fig. 5 is a schematic diagram of the unfolded structure of the rear outrigger and the rear outrigger oil cylinder of the self-disassembly device in another specific embodiment provided by the present invention. Fig. 6 is the self-disassembly shown in Fig. 5 Schematic diagram of the connection relationship between the rear outrigger cylinder and the rear outrigger plate of the device.

As shown in the figure, the structure of the rear outrigger and the rear outrigger oil cylinder located at the rear of the parts to be disassembled is as follows: the rear foot plate 72 is provided with a rear foot plate oil cylinder 18, and the rear foot plate oil cylinder 18 is arranged on the rear foot plate 72 Between the rear outrigger oil cylinder 22 , the expansion and contraction of the rear outrigger oil cylinder 18 can drive the rear outrigger oil cylinder 22 to slide along the slideway 23 provided on the rear outrigger plate 72 .

Setting the rear outrigger oil cylinder 18 can realize the sliding of the rear outrigger oil cylinder 22 relative to the rear outrigger plate 72, so that after the boom is supported by the self-disassembling device, the position of the rear outrigger oil cylinder 22 can also be moved. The relative movement of the front front outrigger oil cylinder 21 and the front outrigger plate 71 realizes the movement of the boom, and fine-tunes the position of the boom to meet the assembly requirements of the boom and the crane. And during the self-disassembling device unfolding process, the angle of the rear leg plate 72 can also be adjusted by external force, as long as the placement angle of the rear leg plate 72 is changed before deployment, after the rear leg plate 72 falls to the ground, the telescopic rear leg plate oil cylinder 18 just can change the position of boom, realizes the rotation of boom at a certain angle.

It needs to be clarified that the rear outrigger cylinder 18 can drive the rear outrigger cylinder 22 to slide relative to the rear outrigger plate 72, and the position of the rear outrigger plate 72 does not change relative to the supporting surface, which is due to the friction of the rear outrigger plate 72 relative to the supporting surface Coefficient is bigger, owing to being provided with slideway 23 on rear leg disc 72, has reduced rear leg oil cylinder 22 relative to the friction coefficient of rear leg disc 72, and rear leg disc oil cylinder 18 just can drive rear leg oil cylinder 22 relative like this Sliding on the rear foot plate 72, thereby driving the boom to move and fine-tuning it.

In the same principle, an opening 17 can also be provided on the upper edge of the rear support base, and when the rear outrigger oil cylinder 22 is retracted, it is placed in the opening 17 to reduce the structural size.

In addition, in order to ensure that the positional relationship between the outrigger cylinder and the outrigger is fixed in the supported state, and to increase the stability of the device, matching pins and pin holes can be provided on the outrigger and outrigger cylinder respectively. When turning over to a vertical state, the pin is inserted into the pin hole.

Please refer to Fig. 2, Fig. 3 and Fig. 5 together. Specifically, a first pin 192 is provided on the front outrigger cylinder 21, a first pin hole 191 is provided on the front outrigger 31, and a first pin hole 191 is provided on the rear outrigger cylinder 22. A second pin hole 194 is provided on the rear leg 32 of the second pin 193 . Setting the second pin 193 and the second pin hole 194 can ensure that when the rear outrigger cylinder 22 slides relative to the rear outrigger plate 72, the rear outrigger cylinder 22 drives the rear outrigger 32 to move together, thereby changing the position of the boom . Under the working state, the first pin 192 is installed with the first pin hole 192, and the second pin 193 is installed with the second pin hole 194; When packing up, first remove the connection between the first pin 192 and the first pin hole 191, the connection between the second pin 193 and the second pin hole 194, and then carry out the packing action.

The connection mode of above-mentioned pin and pin hole also can be other detachable connection modes that can play the same effect.

In addition, the structure of the outrigger 32 can be a box-shaped body, and the telescopic oil cylinder 52 is arranged in the box-shaped body structure of the outrigger 32 . Correspondingly, the hinge point between the telescopic oil cylinder 52 and the outrigger is located in the box-shaped body of the outrigger 32 .

Setting the supporting leg 32 as a box-shaped body can increase the rigidity and strength of the supporting leg 32, improve its ability to resist deformation, and reduce the weight of the self-disassembling device. Arranging the telescopic oil cylinder 52 in the box-shaped body can save space and make it easier to realize the overturning force of the outrigger oil cylinder 22 and the outrigger 32 .

The self-disassembly and assembly device can be powered by the main body or an independent power unit, and the expansion and contraction control mode of the outrigger cylinder can be controlled by mechanical wire rope locks or chains.

Please refer to FIG. 7 , which is a schematic diagram of a specific embodiment of the boom with self-disassembling device provided by the present invention.

The present invention also provides a boom, including boom head 25, boom body 27 and boom tail 29, the boom tail 29 is provided with a pin hole 30 for connecting with the crane turntable, the boom is provided with the above self-detachable Install device 24.

As shown in the figure, more than two sets of outriggers and outrigger cylinders can be arranged on the boom. Under the situation that support leg and arm body 27 are hinged, after unfolding, can adopt fixed pin 26 or fixed link 28 to fix the relative position of support leg and arm body 27, avoid self-detachable device 24 operating state instability. The fixed pin shaft 26 is arranged between the support leg and the arm body 27, and before the self-disassembling device is put away, the fixed pin shaft 26 needs to be unplugged; It is also possible to fix the relative position of the legs and the arm body 27 after the fixed link 28 is launched, and the fixed link 28 can be a separate part; The folding and unfolding of the loading device can be retracted or stretched accordingly.

The front self-disassembly device and the rear self-disassembly device are deployed at different angles, mainly to achieve positioning stability. In the actual operation process, adjusting the telescopic length of different outrigger cylinders can tilt the boom at a certain angle, and adjust the assembly position of the parts to be disassembled and the main body, so as to meet the assembly requirements.

In addition, the self-disassembling device located at the front and the self-disassembled device located at the rear adopt different structural designs. When the two cooperate, the active movement of the rear outrigger oil cylinder 18 drives the movement of the rear outrigger oil cylinder 22 connected to it, thereby driving the The front front leg oil cylinder 21 of the place moves in the gap range between the front support seat 11 and the boss 15, and is aligned with the connection position between the equipment to be disassembled and the main body. Of course, the front outrigger and the front outrigger oil cylinder can also be set to the structural form shown in Fig. 5, but it will cause multi-point active movement, and the adjustment is difficult.

The specific working process of the self-disassembling device provided by the present invention can refer to the self-disassembling device shown in Fig. 8-1, Fig. 8-2, Fig. 8-3, Fig. 8-4 and Fig. 8-5. Steps for installation to a crane.

As shown in the figure, in step one, before installation, the boom 82 provided with the self-disassembling device 83 is first transported to the designated site by the transport vehicle 81; in step two, the self-disassembling device 83 is operated to unfold the legs and Leg oil cylinder supports the lifting arm 82 from both sides of the cancellation, and the transport vehicle 81 drives away; Step 3, after the crane 84 comes, pour it into the rear of the lifting arm 82, roughly aligning the connecting pin holes of the two, at this time, The height of the boom 82 can be controlled by the telescopic outrigger cylinder, and the angle of the boom 82 can be controlled by adjusting the height of different outrigger cylinders. At the same time, the telescopic rear outrigger oil cylinder can control the boom 82 to rotate and move to a certain extent; step 4, After the pin holes are aligned, the pin shaft is inserted, and the boom 82 is assembled; Step 5, after the installation is completed, the self-disassembling device is put away. The disassembly process is the same as the above process, and will not be repeated here.

The boom provided by the present invention and its self-disassembling device have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (7)

1. a self-disassembly and assembly device, parts dismounting for engineering machinery, it is characterized in that, comprise and treat the supporting leg that the dismounting parts are connected, the support oil cylinder hinged with described supporting leg and the leg disc be connected with the bottom of described support oil cylinder, the hinged telescopic oil cylinder that is provided with between described supporting leg and described support oil cylinder, the described support oil cylinder of flexible drive of described telescopic oil cylinder overturns in perpendicular with respect to described supporting leg; The described supporting leg and the described support oil cylinder that match comprise at least two groups, and every group of described supporting leg and described support oil cylinder are along treating that the length direction of dismounting parts sets gradually; Wherein, between the front leg strut oil cylinder for the treatment of dismounting parts the place ahead and front support leg dish, be provided with the front support seat, and the lower end of described front leg strut oil cylinder coordinates with described front support seat ball pivot; Described front support seat bottom arranges the cavity volume that Open Side Down, is provided with the boss be plugged in described cavity volume on described front support leg dish, and has predetermined distance between the outer surface of the circumferential side wall of described cavity volume and described boss.

2. self-disassembly and assembly device according to claim 1, is characterized in that, between the rear support leg oil cylinder for the treatment of dismounting parts rear and rear support leg dish, is provided with the rear support seat, and the lower end of described rear support leg oil cylinder coordinates with described rear support seat ball pivot; Be provided with the leg disc oil cylinder between described rear support seat and described rear leg dish, the described rear support leg oil cylinder of the flexible drive of described leg disc oil cylinder slides along the slideway arranged on described rear leg dish.

3. self-disassembly and assembly device according to claim 2, it is characterized in that, the upper edge of described front support seat and described rear support seat all has opening, described front support leg dish rotates while packing up with respect to described front leg strut oil cylinder and described rear leg dish rotates while packing up with respect to described rear support leg oil cylinder, and described front leg strut oil cylinder and described rear support leg oil cylinder all are placed in corresponding described opening.

4. self-disassembly and assembly device according to claim 3, it is characterized in that, be provided with the first pin-and-hole be connected with described support oil cylinder on described supporting leg, on described support oil cylinder, be provided with the second pin-and-hole of coordinating with described the first pin-and-hole with for being connected the 3rd pin-and-hole of described leg disc, be provided with the 4th pin-and-hole coordinated with described the 3rd pin-and-hole on described leg disc, under collapsed state, between described the first pin-and-hole and described the second pin-and-hole, locate by limiting component between described the 3rd pin-and-hole and described the 4th pin-and-hole.

5. according to the described self-disassembly and assembly device of claim 1-4 any one, it is characterized in that, described supporting leg with treat that the dismounting parts are hinged, hinge axis line is perpendicular to horizontal plane.

6. self-disassembly and assembly device according to claim 1, is characterized in that, described supporting leg be respectively arranged with pin and the pin-and-hole matched on described support oil cylinder, when described support oil cylinder turn to vertical state, described pin is plugged in described pin-and-hole.

7. a crane arm, comprise arm head, arm body and arm tail, and described arm tail is used for being connected with rotating platform of crane, it is characterized in that, described crane arm also comprises the described self-disassembly and assembly device of 1-6 any one.

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