CN102829247B - Multi-stage conveying system and high-altitude operation engineering machinery - Google Patents
Multi-stage conveying system and high-altitude operation engineering machinery Download PDFInfo
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- CN102829247B CN102829247B CN201210293351.7A CN201210293351A CN102829247B CN 102829247 B CN102829247 B CN 102829247B CN 201210293351 A CN201210293351 A CN 201210293351A CN 102829247 B CN102829247 B CN 102829247B
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Abstract
The invention discloses a kind of multi-stage conveying system and high-altitude operation engineering machinery, wherein multi-stage conveying system is for the Pipeline transport of telescopic arm support system, including slideway, drag chain and transfer pipeline, wherein, the jib one_to_one corresponding of slideway and telescopic arm support system also fixing is connected, and adjacent two-stage slideway is slidably matched; Drag chain is connected between two-stage slideway, and transfer pipeline is continuously disposed in drag chain and is connected on the slideway of drag chain; At least the afterbody of one-level slideway is provided with the Buffer Unit that can stretch along the length direction of slideway, for cushioning pressure when slideway contacts with drag chain. The present invention can when the flexible work of telescopic arm support, if jib occurs flexible asynchronous, it is to avoid interfere between drag chain and slideway, even break drag chain or transfer pipeline, it is ensured that the safety of drag chain and transfer pipeline, improve work efficiency.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a multistage conveying system and an aerial work engineering machine with the same.
Background
With the rapid development of economy, the number of high-rise buildings is increased and the height of the high-rise buildings is increased, so that the working height of high-altitude operation mechanical equipment is required to be higher. In the working process, the length of the boom system of the high-altitude operation mechanical equipment is changed through the telescopic mechanism so as to adapt to different operation working conditions, an operator can control the boom telescopic mechanism and the executing mechanisms at the tail end of the boom telescopic mechanism, such as a fire monitor or an operation platform, to complete rescue or operation on the ground, and the actions of the telescopic mechanism and the executing mechanisms are realized through the hydraulic system and the control system. Therefore, a corresponding conveying system is required to be arranged to realize the conveying of the oil supply pipeline and the control cable. With the continuous lengthening of the telescopic boom, the pipeline conveying system also becomes a key and difficult point of design.
At present, a conveying system of an arm support system of high-altitude operation mechanical equipment is internally arranged and externally arranged. The built-in conveying pipeline part is arranged inside the telescopic arm cylinder, the device occupies the inner space of the arm support, and the number of pipelines capable of being arranged is small. The external conveying system is arranged on the side face or the top of the arm support, more pipelines can be arranged, and the external conveying system is suitable for a long arm support system. The existing external conveying system is suitable for odd-level synchronous telescopic arm frames. In addition, due to the limitation of space, the multi-stage drag chain is usually connected to the tail of the next-stage slide from the head of a certain slide at intervals of one slide, so that if the telescopic operation of the arm support is asynchronous, the drag chain and the slide interfere with each other, the drag chain and an internal pipeline are broken, serious safety accidents are possibly caused, and the safety and the operation efficiency are low.
Disclosure of Invention
In view of the above, the invention provides a multi-stage conveying system and an aerial work engineering machine, which can effectively prevent the problem that when the aerial work engineering machine works, the towline or the conveying pipeline is broken due to the interference between the towline and the guiding device caused by the asynchronous telescopic operation of the arm frame.
One aspect of the present invention provides a multi-stage conveying system for pipeline conveying of a telescopic boom system, comprising a slide way, a drag chain and a conveying pipeline, wherein,
the slideways correspond to the arm supports of the telescopic arm support system one by one and are fixedly connected, and the slideways at two adjacent stages are in sliding fit;
the drag chain is connected between the two stages of the slide ways, and the conveying pipeline is continuously arranged on the drag chain and the slide ways connected with the drag chain;
the afterbody of at least one grade the slide is provided with can follow the flexible buffering subassembly of the length direction of slide can cushion the slide with pressure when the tow chain contact.
Further, the buffer assembly comprises a sliding plate and an elastic component, and the slideway comprises a slideway framework; wherein,
the lower part of the slideway framework is provided with a guide groove; the bottom of the guide groove is provided with a first avoidance groove extending along the length direction of the slide rail framework at one end close to the tail of the slide rail, and the length of the first avoidance groove is greater than or equal to the asynchronous telescopic quantity between two adjacent slide rails;
the sliding plate is slidably arranged in the guide groove, and the sliding plate and the slideway framework are connected through the elastic component, and the elastic component is used for applying elastic load to the relative movement between the sliding plate and the slideway framework.
Further, the elastic component is a spring.
Furthermore, the slide way is of M level, and the drag chain is of N level; wherein,
the first end of the first-stage drag chain is connected to the head of the first-stage slideway, and the second end of the first-stage drag chain is connected to the tail of the second-stage or third-stage slideway; the first end of the ith-stage drag chain is connected to the head of the kth-stage slideway, and the second end of the ith-stage drag chain is connected to the tail of the k + a-stage slideway; the head of the k + a stage slide way is connected to the first end of the i +1 stage drag chain, and the first end and the second end of the nth stage drag chain are sequentially and alternately connected until the second end of the nth stage drag chain is connected to the tail of the mth stage slide way;
m is more than N and more than or equal to 1, M is more than k and more than or equal to 1, N is more than or equal to i and more than or equal to 1, k is more than or equal to i, a is more than or equal to 1, and M, N, i, k and a are integers.
Further, a-1 or a-2.
Furthermore, the slideway also comprises a cover plate, and the cover plate is fixedly arranged at the upper part of the slideway framework; and is
The tail part of the cover plate is provided with a second avoidance groove extending along the length direction of the slideway framework, the length of the second avoidance groove is more than or equal to the asynchronous telescopic quantity between the two adjacent slideways and corresponds to the position of the first avoidance groove, or,
the distance between the tail of the cover plate and the tail of the slide way is larger than or equal to the asynchronous telescopic quantity between the adjacent two slide ways.
Further, the cover plate is connected with the upper portion of the slide way framework through bolts.
Further, the conveying pipeline comprises a fixed pipeline and a connecting pipeline, the fixed pipeline is arranged on the slideway connected with the drag chain, and the connecting pipeline is connected with the adjacent fixed pipeline.
Further, a cavity is formed between the cover plate and the sliding plate, and the fixed pipeline is arranged in the cavity between the cover plate and the sliding plate;
the drag chain is provided with a cavity, and the connecting pipeline is arranged in the cavity of the drag chain.
The invention also provides an overhead working engineering machine which is provided with a telescopic arm support system and a multi-stage conveying system.
The multistage conveying system comprises slideways, drag chains and conveying pipelines, wherein the slideways are arranged in one-to-one correspondence with the arm supports and are connected by the drag chains, and the conveying pipelines are arranged along the slideways and the drag chains, wherein the tail parts of the slideways are provided with buffer assemblies.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of a multi-stage conveying system according to the present invention;
FIG. 2 is a schematic partial view of a skid according to an embodiment of the multi-stage conveyor system of the present invention;
FIG. 3 is a view of the skid shown in FIG. 2 in direction A;
fig. 4 is an enlarged schematic view of the slide shown in fig. 2 at B.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The basic idea of the invention is that: in view of the connection mode of the drag chain of the existing multistage conveying system, when high-altitude operation mechanical equipment works, the drag chain and the slide way generate interference, and the drag chain and the conveying pipeline are broken seriously, so that the safety and the working efficiency are low.
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the present invention provides an embodiment of a multi-stage conveying system, which is used for pipeline conveying of a telescopic boom system, and includes a slideway 1, a drag chain 2 and a conveying pipeline 3, wherein the slideway 1 corresponds to and is fixedly connected with a boom 8 of the telescopic boom system one by one, and adjacent two stages of slideways 1 are in sliding fit; the drag chain 2 is connected between the two stages of slideways 1, and the conveying pipeline 3 is continuously arranged on the drag chain 2 and the slideways 1 connected with the drag chain 2; the afterbody of at least one-level slide 1 is provided with the flexible buffering subassembly of length direction that can follow slide 1, can cushion the pressure when slide 1 and tow chain 2 contact. The conveying pipeline 3 extends to the last-stage slideway 1 from the first-stage slideway through the drag chain 2 and the slideway 1 connected with the drag chain 2 in turn.
The multistage conveying system comprises slideways 1, drag chains 2 and conveying pipelines 3, wherein the slideways 1 are arranged in one-to-one correspondence with arm supports 8 and are connected by the drag chains 2, and the conveying pipelines 3 are arranged along the slideways 1 and the drag chains 2, wherein the tail parts of the slideways 1 are provided with buffer assemblies, when the telescopic arm supports 8 are in telescopic work, if the arm supports 8 are not synchronous in telescopic work, the drag chains 2 can firstly contact with the buffer assemblies of the slideways 1 with low telescopic speed and extrude the buffer assemblies, and the asynchronous telescopic quantity between two adjacent slideways 1 is counteracted through the buffer of the buffer assemblies, so that the interference between the drag chains 2 and the slideways 1 can be avoided, the drag chains 2 or the conveying pipelines 3 are prevented from being broken, the safety of the drag chains 2 and the conveying pipelines 3 is ensured, and the working.
It should be noted that the head and the tail (or the tail) of the multi-stage conveying system of the invention can be described by means of the telescopic direction of the arm support, so as to facilitate the discussion and understanding of the multi-stage conveying system of the invention. The asynchronous expansion and contraction quantity between the two adjacent slide ways means that the expansion and contraction speed of a certain slide way is different from the expansion and contraction speed of the adjacent slide way in the expansion and contraction process, so that the displacement difference between the two adjacent slide ways is caused. This displacement is poor too big, can lead to the distance increase between the two-stage slide, then can influence (break) tow chain, influences work efficiency, consequently, the utility model discloses buffer this flexible asynchronous quantity with the help of the buffering subassembly.
The specific implementation of the buffer assembly can be varied, such as an elastic frame, a sliding plate, etc. disposed at the tail portion. The slide plate will be described in detail below as an example.
As for the connection mode of the slideway 1 and the drag chain 2, the connection mode is the prior art known by the technicians in the field, and the drag chain 2 can be connected with the adjacent two-stage slideway 1, namely, the head of the slideway 1 at the upper stage is connected with the tail of the slideway 1 at the lower stage; also can connect the one-stage or multi-stage slideway 1 at intervals; and can be mixed and applied in the same multi-stage conveying system in two ways. In practical application, considering the limitation of assembly space and other factors, a drag chain 2 is usually adopted to connect two slideways spaced by 1 stage. Similar patent documents exist in the prior art.
As shown in fig. 1, the present invention provides a preferred embodiment of a multi-stage conveying system by taking six sections of telescopic booms as an example. Corresponding to the six sections of telescopic arm frames 8, the multi-stage conveying system comprises six stages of slideways 1 and three stages of drag chains 2. The first-sixth-stage slideways 1 correspond to and are connected to the first-sixth sections of arm frames 8 respectively, and are preferably fixedly connected with the heads of the arm frames 8 so as to move synchronously along with the extension and retraction of the arm frames 8, so that the synchronous extension and retraction of the slideways and the arm frames 8 are ensured, and the power for driving the slideways is also solved. The first end of the first-stage drag chain 21 is connected with the head of the first-stage slideway 11, and after bypassing the tail of the second-stage slideway 12, the second end is connected with the tail of the third-stage slideway 13; the first end of the second-stage drag chain 22 is connected with the head of the third-stage slideway 13, and after bypassing the tail of the fourth-stage slideway 14, the second end is connected with the tail of the fifth-stage slideway 15; the first end of the third-stage drag chain 23 is connected with the middle part of the fifth-stage slideway 15, and the other end is connected with the tail part of the sixth-stage slideway 16.
It should be noted here that the third-stage drag chain 23 in this embodiment is not connected to the slide 1 after every other slide, like the first-stage drag chain 21 and the second-stage drag chain 22, because the slide 1 in this embodiment has six stages, the third-stage drag chain 23 only needs to connect the fifth-stage and sixth-stage slides, and does not need to separate the slides, therefore, in order to save materials and arrangement space of the drag chain 2, the third-stage drag chain 23 is directly connected to the tail of the sixth-stage slide 16 from the middle of the fifth-stage slide 15, and this connection is also enough to deal with the unfolding of the slide 1. Of course, the third stage tow chain 23 may also connect the head of the fifth stage skid 15 and the tail of the sixth stage skid 16 if conditions permit or design requirements.
The second stage slide 12 and the fourth stage slide 14 in the slide 1 in this embodiment are provided with a damping assembly. As shown in fig. 2 to 4, the buffering assembly includes a sliding plate 5 and an elastic component, the slideway includes a slideway framework 4, and a guide groove is formed at the lower part of the slideway framework 4, for accommodating the sliding plate 5 and providing a guide for the sliding of the sliding plate 5. As shown in fig. 3, a first avoiding groove C extending along the length direction of the slide way framework 4 is formed at one end of the bottom of the guide groove close to the tail of the slide way 1, and the length of the first avoiding groove C is greater than or equal to the asynchronous amount of extension between the adjacent two-stage slide ways 1, so that a moving space is provided for the drag chain 2, and the drag chain 2 can move along with the sliding plate 5 without interfering with the slide way 1 or the slide way framework 4. The figure also shows that the sliding plate 5 is connected with the slideway framework 4 by an elastic component, preferably a spring 6 in the embodiment, the spring 6 is arranged between the sliding plate 5 and the slideway framework 4, when the sliding plate 5 is pressed to slide by contacting with the drag chain, the spring 6 applies a certain elastic load to the sliding plate 5, and the load is opposite to the moving direction of the sliding plate 5.
As shown in fig. 2, the slideway 1 further comprises a cover plate 7, the cover plate 7 is preferably fixedly connected with the upper part of the slideway framework 4 through bolts, so that the cover plate 7 can be detached relative to the slideway framework 4, and the tail part (or tail end) of the cover plate 7 has a certain distance with the tail part (or tail end) of the slideway 1, the distance is greater than or equal to the asynchronous amount of extension and retraction between the two adjacent slideways 1, or is greater than or equal to the length of the first avoidance groove C, which aims to provide a moving space for the drag chain 2, and can ensure that the drag chain 2 can move along with the sliding plate 5 after the cover plate 7 is installed, and does not interfere with the cover plate 7. As an optional implementation manner, the tail of the cover plate 7 is provided with a second avoidance groove, the second avoidance groove corresponds to the first avoidance groove C in terms of extending direction and size, that is, the second avoidance groove also extends along the length direction of the slide way framework 4 and is located above the first avoidance groove C, so that the tow chain 2 can enter the two avoidance grooves simultaneously to move in the two avoidance grooves, the width and depth of the second avoidance groove are equivalent to those of the first avoidance groove C, or at least on the premise that the width can allow the tow chain 2 to enter, the depth of the second avoidance groove is greater than or equal to the asynchronous amount of stretching between the adjacent two-stage slide ways 1.
It should be noted that the two structures discussed above can be implemented on the cover plate 7 in a matching manner, that is, the tail of the cover plate 7 does not extend above the tail of the slideway 1, that is, a certain distance L exists between the tail of the slideway 1 and the tail of the cover plate 7, and meanwhile, an avoiding groove is further formed in the tail of the cover plate 7 and extends along the length direction of the slideway framework 4; the distance L and the depth (or length) H of the avoiding groove are not necessarily greater than or equal to the asynchronous amount of extension and retraction between the slideways, but the distance L and the avoiding groove exist at the same time, and the total distance (H + L) from the bottom of the avoiding groove to the tail of the slideway 1 is greater than or equal to the asynchronous amount of extension and retraction between the slideways. Since the avoiding groove is formed in the cover plate 7, the bottom of the avoiding groove can be considered as a part of the tail of the cover plate 7, and therefore, this embodiment can be equivalently considered as a special example that the distance from the tail of the cover plate 7 to the tail of the slideway 1 is greater than or equal to the asynchronous amount of extension and retraction between two adjacent slideways 1.
The conveying pipe 3 in this embodiment may include a fixed pipe and a connecting pipe (not shown in the figure), wherein the fixed pipe is fixedly disposed on the slideway 1, and specifically, the fixed pipe may be disposed in a cavity between the cover plate 7 and the sliding plate 5; and the connecting pipeline can be arranged in the inner cavity of the drag chain 2 and used for connecting two adjacent fixed pipelines. It should be noted that, according to the foregoing discussion, the cover plate 7 of the present invention is detachable with respect to the chute frame 4, so that when a fixed pipeline is disposed in the chute, the cover plate 7 may be disposed after the fixed pipeline is completely laid, which facilitates the disposition of the conveying pipeline 3. The fixed pipelines should be arranged corresponding to the connection mode of the drag chain 2, i.e. on the slideway 1 connected with the drag chain 2, for example, in this embodiment, the fixed pipelines should be arranged on the first-stage slideway 11, the third-stage slideway 13, the fifth slideway 15 and the sixth-stage slideway 16, and due to the special connection mode of the fifth-stage slideway 15 and the third-stage drag chain 23 in this embodiment, the fixed pipelines can be laid from the tail part to the middle part of the fifth-stage slideway 15 and then connected with the connecting pipelines arranged in the third-stage drag chain 23. As mentioned above, if the first end of the third stage tow chain 23 is connected to the head of the fifth stage skid 15, then the fixed pipeline within the fifth stage skid 15 should also run from tail to head.
In the process that the multistage conveying system extends and retracts along with the arm support 8, if the arm support 8 extends and retracts asynchronously, the slide way 1 is affected to extend and retract asynchronously. If the extension speed of the third stage slideway 13 is higher than that of the second stage slideway 12, the extension speed of the second end of the first stage drag chain 21 moving along with the third stage slideway 13 is higher than that of the second stage slideway 12, the first stage drag chain 21 will contact with the tail of the second stage slideway 12, because the tail of the slideway is provided with the sliding plate 5 as shown in fig. 2-4, the first stage drag chain 21 will contact and push the sliding plate 5 arranged in the second stage slideway 12 first, and then compress the elastic component, namely the spring 6, thereby avoiding the interference between the first stage drag chain 21 and the second stage slideway 12. On the contrary, when the retracting speed of the second-stage slideway 12 is higher than that of the third-stage slideway 13, the sliding plate 5 in the second-stage slideway 12 will contact with the first-stage drag chain 21 and be blocked by the first-stage drag chain 21, the sliding plate 5 will move along the direction opposite to the retracting direction of the second-stage slideway 12 (i.e. the extending direction), and the spring 6 is compressed to prevent the second-stage slideway 12 from impacting the first-stage drag chain 21, so as to prevent the pipeline from being pulled off.
It should be noted here that the compressible amount of the spring 6 should be greater than or equal to the asynchronous extension and retraction amount or the maximum displacement difference between the two stages of the slide ways 1 caused by different extension and retraction, and as discussed above for the slide way structure, the staggered distance between the tail of the cover plate 7 and the tail of the slide way 1 should be greater than or equal to the compressible amount of the spring 6, or the tail of the cover plate 7 should be provided with a second avoiding groove with a depth greater than or equal to the compressible amount of the spring 6.
In the existing multistage conveying system, when the slide and the drag chain are interfered due to asynchronous expansion of the arm frame, the drag chain or the conveying pipeline is easily broken due to rigid contact between the slide and the drag chain. In the above embodiment of the invention, the sliding plate and the elastic component are used to convert the interference process into the compression process of the elastic component, thereby preventing the drag chain or the conveying pipeline from being pulled apart.
For the above embodiment, the connecting manner of the drag chain 2 and the slideway 1 is that the drag chain 2 is connected with the next slideway 1 at every other one (except the last two slideways), but this is only a preferable connecting manner, if the installation space of the multi-stage conveying system allows, the drag chain 2 can also be connected with the adjacent two slideways 1, and the connecting manner of the spaced slideways and the non-spaced slideways (the complete connection of the above embodiment) can also be adopted according to the requirement, even under the condition that the drag chain, the conveying pipeline and the installation space allow, the two-stage or multi-stage slideways can also be connected at intervals.
In addition, as a simplified multistage conveying system embodiment of the above embodiment, the sliding plate and the elastic component may be omitted, only the first avoidance groove and the cover plate are reserved, a certain distance is reserved between the tail of the cover plate and the tail of the slideway, and the distance and the depth of the first avoidance groove are both greater than or equal to the asynchronous amount of expansion of the two-stage slideways.
The invention correspondingly provides an overhead working engineering machine which is provided with a telescopic arm support system and a multi-stage conveying system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A multi-stage conveying system for pipeline conveying of a telescopic boom system comprises a slideway (1), a drag chain (2) and a conveying pipeline (3), and is characterized in that,
the slideways (1) correspond to the arm supports (8) of the telescopic arm support system one by one and are fixedly connected, and the slideways (1) in two adjacent stages are in sliding fit;
the drag chain (2) is connected between the two stages of the slideways (1), and the conveying pipeline (3) is continuously arranged on the drag chain (2) and the slideways (1) connected with the drag chain (2);
the tail of the at least one stage slide (1) is provided with a buffer assembly which can stretch along the length direction of the slide (1) and can buffer the pressure of the slide (1) when in contact with the drag chain (2).
2. The multi-stage conveying system according to claim 1, wherein the buffering assembly comprises a sliding plate (5) and an elastic member, the chute (1) comprises a chute frame (4); wherein,
the lower part of the slideway framework (4) is provided with a guide groove; the bottom of the guide groove is provided with a first avoidance groove (C) extending along the length direction of the slide rail framework (4) at one end close to the tail part of the slide rail (1), and the length of the first avoidance groove (C) is greater than or equal to the asynchronous telescopic quantity between the adjacent two stages of slide rails (1);
the sliding plate (5) is arranged in the guide groove in a sliding mode, and the sliding plate (5) and the slideway framework (4) are connected through the elastic component which is used for applying elastic load to relative movement between the sliding plate (5) and the slideway framework (4).
3. The multi-stage conveying system according to claim 2, wherein the resilient member is a spring (6).
4. The multistage conveyor system according to claim 2 or 3, wherein the skid (1) is M-stage and the drag chain (2) is N-stage; wherein,
the drag chain (2) is provided with a first end and a second end, the first end of the first-stage drag chain (2) is connected to the head of the first-stage slideway (1), and the second end of the first-stage drag chain (2) is connected to the tail of the second-stage or third-stage slideway (1); the first end of the ith-stage drag chain (2) is connected to the head of the kth-stage slideway (1), and the second end of the ith-stage drag chain (2) is connected to the tail of the (k + a) -th-stage slideway (1); the head of the k + a stage slide way (1) is connected to the first end of the i +1 stage drag chain (2) in turn, and the two ends are alternately connected until the second end of the Nth stage drag chain (2) is connected to the tail of the Mth stage slide way (1);
m is more than N and more than or equal to 1, M is more than k and more than or equal to 1, N is more than or equal to i and more than or equal to 1, k is more than or equal to i, a is more than or equal to 1, and M, N, i, k and a are integers.
5. The multi-stage conveying system according to claim 4, wherein a-1 or a-2.
6. The multi-stage conveying system according to claim 4, wherein the chute (1) further comprises a cover plate (7), the cover plate (7) being fixedly arranged at an upper portion of the chute frame (4); and is
The tail part of the cover plate (7) is provided with a second avoiding groove extending along the length direction of the slideway framework (4), the length of the second avoiding groove is more than or equal to the asynchronous amount of the extension between the two adjacent slideways (1) and corresponds to the position of the first avoiding groove (C), or,
the distance between the tail of the cover plate (7) and the tail of the slide way (1) is larger than or equal to the asynchronous telescopic quantity between the adjacent two-stage slide ways (1).
7. Multistage conveyor system according to claim 6, characterized in that the cover plate (7) is connected with the upper part of the chute frame (4) by means of bolts.
8. The multistage conveying system according to claim 6, wherein the conveying lines (3) comprise fixed lines provided on the slide (1) to which the drag chain 2 is connected and connecting lines connecting adjacent fixed lines.
9. The multistage conveyor system according to claim 8, wherein there is a cavity between the cover plate (7) and the sliding plate (5), the fixed line being arranged in the cavity between the cover plate (7) and the sliding plate (5);
the drag chain (2) is provided with a cavity, and the connecting pipeline is arranged in the cavity of the drag chain (2).
10. An aerial work machine having a telescopic boom system, characterised in that a multi-stage conveying system according to any one of claims 1-9 is provided.
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| CN201210293351.7A CN102829247B (en) | 2012-08-16 | 2012-08-16 | Multi-stage conveying system and high-altitude operation engineering machinery |
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| CN107289198B (en) * | 2017-07-10 | 2023-08-04 | 广西建工集团第三建筑工程有限责任公司 | Device for resolving kinetic energy of concrete pump |
| CN109404489A (en) * | 2017-08-17 | 2019-03-01 | 河南森源重工有限公司 | A kind of telescopic boom towing chain mechanism |
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2012
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8913175U1 (en) * | 1989-11-07 | 1990-02-15 | Vogt-Werke GmbH & Co KG, 6490 Schlüchtern | Lifting device |
| CN102050410A (en) * | 2009-11-06 | 2011-05-11 | 徐州重型机械有限公司 | Two-stage conveyor system, telescopic box type arm support and aerial working engineering machinery |
| CN201561187U (en) * | 2009-12-17 | 2010-08-25 | 沈阳北方交通重工有限公司 | Telescopic pipeline conveying device |
| CN201842621U (en) * | 2010-09-02 | 2011-05-25 | 徐州重型机械有限公司 | Multi-stage external conveying system and high altitude operation vehicle employing same |
| CN202279672U (en) * | 2011-10-15 | 2012-06-20 | 徐州海伦哲专用车辆股份有限公司 | Built-in pipeline conveying system |
| CN202769056U (en) * | 2012-08-16 | 2013-03-06 | 北京市三一重机有限公司 | Multistage transport system and aloft work engineering machinery |
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| CN102829247A (en) | 2012-12-19 |
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