CN112627022A - Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof - Google Patents
Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof Download PDFInfo
- Publication number
- CN112627022A CN112627022A CN202011232613.XA CN202011232613A CN112627022A CN 112627022 A CN112627022 A CN 112627022A CN 202011232613 A CN202011232613 A CN 202011232613A CN 112627022 A CN112627022 A CN 112627022A
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- arm
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- fixedly connected
- guide groove
- drag chain
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- 238000007689 inspection Methods 0.000 title claims abstract description 32
- 238000005452 bending Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a telescopic arm of a cantilever type bridge inspection vehicle, which is characterized by comprising a basic arm (1), a driving device, a drag chain (3) and an extension arm (4), wherein the driving device is fixedly connected with the basic arm (1), the output end of the driving device is fixedly connected with the extension arm (4), and the driving device is used for controlling the extension and retraction of the extension arm (4); one end of the drag chain (3) is fixedly connected with the basic arm (1), and the other end of the drag chain is fixedly connected with the extending arm (4); the telescopic boom has the advantages of light weight and simple structure by arranging two sections of booms (a basic boom and an extension boom), the single oil cylinder and the tow chain, and the telescopic boom is more convenient to install and maintain by adopting an arrangement form of the external oil cylinder and the internal tow chain; under the same operation parameters, the telescopic boom can reduce the total weight of the whole vehicle and improve the stability and reliability of the whole vehicle.
Description
Technical Field
The invention relates to the technical field, in particular to a telescopic arm of an arm frame type bridge detection vehicle and the bridge detection vehicle.
Background
When the cantilever type bridge inspection vehicle works, the telescopic boom is required to convey operating personnel and equipment to an inspection position through telescopic amplitude. The telescopic arm is a key component for realizing the maximum horizontal operation amplitude, the maximum operation height and the maximum operation depth of the cantilever type bridge inspection vehicle. The weight of the telescopic arm directly influences the weight and stability of the whole vehicle. The reliability of the telescopic arm is directly related to the reliability of the whole machine. At present, the telescopic arm of the cantilever bridge inspection vehicle is in the form of a three-section arm body (a basic arm, a first stretching arm and a second stretching arm), a double oil cylinder and a drag chain. The double oil cylinders are arranged in the arm body, the cylinder barrel is connected with the first stretching arm, piston rods at two ends are respectively connected with the basic arm and the second stretching arm, and the oil cylinders stretch in sequence to respectively drive the first stretching arm and the second stretching arm to stretch so as to adjust the detection position. The drag chain is arranged outside the arm body, and the hydraulic pipeline and the electric circuit are connected into the operation platform through the pipe arranging arm, the drag chain and the guide rod. This telescopic arm form has the following disadvantages:
1. the three-section arm and the double oil cylinder enable the total weight of the telescopic arm to be relatively large, which is not beneficial to maximization of the operation parameters of the whole machine;
2. the integral arrangement of the oil cylinder and the drag chain is not simple enough, and the installation in the early stage and the maintenance in the later stage of the vehicle are not convenient.
Disclosure of Invention
The invention aims to provide a telescopic arm of a cantilever type bridge inspection vehicle and the bridge inspection vehicle thereof, so as to solve one of the defects caused by the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme: the telescopic boom of the cantilever type bridge inspection vehicle is characterized by comprising a basic boom, a driving device, a drag chain and an extension boom, wherein the driving device is connected with the basic boom through a pin shaft; one end of the drag chain is fixedly connected with the basic arm, and the other end of the drag chain is fixedly connected with the extending arm.
Preferably, the telescopic arm of the cantilever bridge inspection vehicle is characterized in that the basic arm is provided with a bracket, the bracket is provided with an upper guide groove, and the upper guide groove is fixedly connected with the drag chain.
Preferably, the telescopic arm of the cantilever type bridge inspection vehicle is characterized in that the bracket comprises an upper bent plate, a vertical plate and a bottom plate, the upper bent plate is fixedly connected with the upper guide groove, the top end of the bottom plate is fixedly connected with the vertical plate, and the top ends of the vertical plate pairs are fixedly connected with the upper bent plate.
Preferably, the telescopic arm of the cantilever type bridge inspection vehicle is characterized by further comprising a drag chain mechanism, the drag chain mechanism is provided with a lower guide groove, a pipe clamp mounting plate is arranged in the lower guide groove, the front end of the lower guide groove is fixedly connected with an extension arm, the rear end of the lower guide groove is fixedly connected with the drag chain guide groove, the drag chain mechanism is provided with a bent plate, and the drag chain guide groove is fixedly connected with the bent plate. One end of the drag chain is fixedly connected with the drag chain guide groove, and the other end of the drag chain is fixedly connected with the upper guide groove.
Preferably, the telescopic arm of the cantilever type bridge inspection vehicle is characterized in that the sliding mechanism comprises a connecting plate, one end of the connecting plate is fixedly connected with the tow chain guide groove, and the other end of the connecting plate is fixedly connected with the guide sliding block.
Preferably, the telescopic arm of the cantilever type bridge inspection vehicle is characterized in that the tow chain guide groove comprises a first U-shaped groove-shaped plate and a second U-shaped groove-shaped plate, the first U-shaped groove-shaped plate is fixedly connected with the second U-shaped groove-shaped plate, and the second U-shaped groove-shaped plate is provided with a pipe clamp mounting plate.
Preferably, the telescopic arm of the cantilever type bridge inspection vehicle is characterized in that the driving device comprises a telescopic oil cylinder, a guide rod and a guide bent plate, the telescopic oil cylinder is provided with a first connecting shaft, the basic arm is provided with a first connecting lug corresponding to the first connecting shaft, and the first connecting shaft is connected with the first connecting lug; the piston rod of telescopic cylinder sets up the second connecting axle, an arm that stretches sets up with the corresponding second engaging lug of second connecting axle, the second connecting axle with the second engaging lug is connected, guide arm one end with telescopic cylinder fixed connection, the other end with direction bent plate sliding connection, the direction bent plate with basic arm fixed connection.
A bridge inspection vehicle comprises any one of the telescopic arms of the cantilever crane type bridge inspection vehicle.
According to the technical scheme, the embodiment of the invention at least has the following effects: the telescopic boom has the advantages of light weight and simple structure by arranging two sections of booms (a basic boom and an extension boom), the single oil cylinder and the tow chain, and the telescopic boom is more convenient to install and maintain by adopting an arrangement form of the external oil cylinder and the internal tow chain; under the same operation parameters, the total weight of the whole vehicle is reduced by the telescopic arm, so that the stability and reliability of the whole vehicle are improved, the production cost of the whole vehicle is reduced, and the economical efficiency of bridge inspection is better; on the premise of ensuring stability and reliability, the telescopic arm is also beneficial to the maximum design of the operation parameters of the bridge inspection vehicle.
Drawings
FIG. 1 is a front view of a telescopic arm according to an embodiment of the present invention
FIG. 2 is a top view of a telescopic arm according to an embodiment of the present invention
FIG. 3 is a schematic structural view of a portion of a drag chain according to an embodiment of the present invention;
FIG. 4 is a schematic view of a bracket according to an embodiment of the present invention;
FIG. 5 is a schematic view of a tow chain guide channel according to an embodiment of the present invention;
wherein: 1-basic arm, 2-telescopic oil cylinder, 3-drag chain, 4-extending arm, 5-bracket, 6-guide groove, 7-drag chain guide groove, 8-lower guide groove, 9-guide slide block, 10-connecting plate, 11-bent plate, 12-first connecting lug, 13-guide bent plate, 41-second connecting lug, 51-upper bent plate, 52-vertical plate, 53-bottom plate, 71-first U-shaped groove plate, 72-second U-shaped groove plate, 73-pipe clamp mounting plate, 201-first connecting shaft, 202-second connecting shaft and 203-guide rod.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in 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 thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1 to 5, the invention discloses a telescopic boom of a boom type bridge inspection vehicle, which comprises a basic boom 1, a driving device, a drag chain 3, an extension boom 4, a bracket 5, an upper guide groove 6, a drag chain guide groove 7, a lower guide groove 8, a guide slide block 9, a connecting plate 10 and a bent plate 11; the driving device comprises a telescopic oil cylinder 2, a first connecting shaft 201, a second connecting shaft 202, a guide rod 203 and a guide bent plate 13.
The basic arm 1 and the extension arm 4 are respectively formed by welding high-strength steel plates in a splicing mode, the basic arm 1 and the extension arm 4 are both of hollow square box structures, and the drag chain 3 is arranged in the extension arm 4.
Referring to fig. 3, a bracket 5 is fixedly connected with a basic arm 1, an upper guide groove 6 is fixedly connected with the bracket 5, one end of a drag chain 3 is fixedly connected with the upper guide groove 6, the other end of the drag chain is fixedly connected with a drag chain guide groove 7, one end of the drag chain guide groove 7 is fixedly connected with a lower guide groove 8, the other end of the drag chain guide groove 7 is fixedly connected with a bent plate 11, the front end of the lower guide groove 8 is fixedly connected with the front end of an extending arm 4, the bent plate 11 is fixedly connected with an extending arm 4, one end of a connecting plate 10 is fixedly connected with the drag chain guide groove 7, and the other end of; an arm 4 is driven by the telescopic oil cylinder 2 to extend and retract, and the drag chain 3 moves along with the arm 4.
Referring to fig. 4, the bracket 5 includes an upper bending plate 51, a vertical plate 52 and a bottom plate 53, the upper bending plate 51, the vertical plate 52 and the bottom plate 53 are made of steel plates, the top end of the bottom plate 53 is fixedly connected to the bottom end of the vertical plate 52, the top end of the vertical plate 52 is fixedly connected to the bottom end of the upper bending plate 51, and the bracket 5 is fixedly connected to the upper guide groove 6, so that the upper end of the drag chain 3 is connected to the base arm 1, and the upper end of the drag chain 3 is indirectly supported through the upper guide groove 6, thereby preventing the upper portion of the drag chain 3 from collapsing.
Referring to fig. 5, the drag chain 3 includes a first U-shaped channel plate 71 and a second U-shaped channel plate 72, and the first U-shaped channel plate 71 and the second U-shaped channel plate 72 are fixedly connected.
Referring to fig. 4 to 5, the upper guide groove 6, the lower guide groove 8 and the second U-shaped groove plate 72 are all provided with a pipe clamp mounting plate 73, and the pipe clamp mounting plate 73 is provided to fix the pipe clamp.
The upper guide groove 6 and the lower guide groove 8 are respectively formed by welding high-strength aluminum alloy in a splicing mode, and the upper guide groove 6 and the lower guide groove 8 are both square box-shaped in structural form.
When the pipe distribution and wiring are implemented specifically, a hydraulic pipeline and an electric circuit sequentially pass through the upper guide groove 6, the drag chain 3, the drag chain guide groove 7 and the lower guide groove 8; preferably, the upper guide groove 6, the lower part of the drag chain guide groove 7 and the lower guide groove 8 are provided with hard pipes, and the drag chain 3 is internally provided with a hose.
The motion principle is as follows: the telescopic oil cylinder 2 drives the telescopic arm 4 to do telescopic motion, the telescopic arm 4 drives the inner lower guide groove 8 and the drag chain guide groove 7 to move when being telescopic, one end of the drag chain 3 is fixedly connected with the drag chain guide groove 7 through a bolt, and the other end of the drag chain is fixedly connected with the upper guide groove 6 through a bolt, so that the telescopic motion is realized.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. The telescopic boom of the cantilever type bridge inspection vehicle is characterized by comprising a basic boom (1), a driving device, a drag chain (3) and an extension boom (4), wherein the driving device is in pin connection with the basic boom (1), the output end of the driving device is in pin connection with the extension boom (4), and the driving device is used for controlling the extension and retraction of the extension boom (4); one end of the drag chain (3) is fixedly connected with the basic arm (1), and the other end of the drag chain is fixedly connected with the extending arm (4).
2. The telescopic arm of an arm-frame type bridge inspection vehicle according to claim 1, wherein the basic arm (1) is provided with a bracket (5), the bracket (5) is provided with an upper guide groove (6), and the upper guide groove (6) is fixedly connected with the drag chain (3).
3. The telescopic arm of the cantilever bridge inspection vehicle of claim 2, wherein the bracket (5) comprises an upper bending plate (51), a vertical plate (52) and a bottom plate (53), the upper bending plate (51) is fixedly connected with the upper guide groove (6), the top end of the bottom plate (53) is fixedly connected with the vertical plate (52), and the top end of the vertical plate (52) pair is fixedly connected with the upper bending plate (51).
4. The telescopic arm of the cantilever type bridge inspection vehicle according to claim 1, further comprising a drag chain mechanism, wherein the drag chain mechanism is provided with a lower guide groove (8), a pipe clamp mounting plate is arranged in the lower guide groove (8), the front end of the lower guide groove (8) is fixedly connected with an extending arm (4), the rear end of the lower guide groove (8) is fixedly connected with a drag chain guide groove (7), the drag chain mechanism is provided with a bent plate (11), the drag chain guide groove (7) is fixedly connected with the bent plate (11), one end of the drag chain (3) is fixedly connected with the drag chain guide groove (7), and the other end of the drag chain is fixedly connected with the upper guide groove (6).
5. The telescopic arm of the cantilever type bridge inspection vehicle of claim 4, wherein the sliding mechanism comprises a connecting plate (10), one end of the connecting plate (10) is fixedly connected with the tow chain guide groove (7), and the other end of the connecting plate is fixedly connected with the guide sliding block (9).
6. The telescopic arm of the cantilever type bridge inspection vehicle according to claim 4, wherein the tow chain guide groove (7) comprises a first U-shaped groove plate (71) and a second U-shaped groove plate (72), the first U-shaped groove plate (71) is fixedly connected with the second U-shaped groove plate (72), and the second U-shaped groove plate (72) is provided with a pipe clamp mounting plate (73).
7. The telescopic arm of the cantilever type bridge inspection vehicle of claim 1, wherein the driving device comprises a telescopic oil cylinder (2), a guide rod (203) and a guide bent plate (13), the telescopic oil cylinder (2) is provided with a first connecting shaft (201), the basic arm (1) is provided with a first connecting lug (12) corresponding to the first connecting shaft (201), and the first connecting shaft (201) is connected with the first connecting lug (12); the piston rod of flexible hydro-cylinder (2) sets up second connecting axle (202), one stretch arm (4) set up with second connecting axle (202) corresponding second engaging lug (41), second connecting axle (202) with second engaging lug (41) are connected, guide arm (203) one end with flexible hydro-cylinder (2) fixed connection, the other end with direction bent plate (13) sliding connection, direction bent plate (13) with basic arm (1) fixed connection.
8. A bridge inspection vehicle, characterized by comprising the telescopic boom of the boom type bridge inspection vehicle of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232613.XA CN112627022A (en) | 2020-11-06 | 2020-11-06 | Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232613.XA CN112627022A (en) | 2020-11-06 | 2020-11-06 | Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112627022A true CN112627022A (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232613.XA Pending CN112627022A (en) | 2020-11-06 | 2020-11-06 | Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof |
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| CN (1) | CN112627022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277664A (en) * | 2021-12-23 | 2022-04-05 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Telescopic mechanical bridge erecting mechanism |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU895881A1 (en) * | 1978-06-30 | 1982-01-07 | Институт Манипулачних,Доправних,Обаловых А Складовацих Систему (Инопредприятие) | Automatic apparatus for uncoupling rigging |
| DE3433178A1 (en) * | 1984-09-10 | 1986-03-20 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | BRIDGE UNIT |
| CN201746291U (en) * | 2010-08-05 | 2011-02-16 | 徐州重型机械有限公司 | Aloft work engineering machine and telescopic arm device thereof |
| CN102029034A (en) * | 2009-09-29 | 2011-04-27 | 徐州重型机械有限公司 | Engineering machine and telescopic arm thereof |
| CN102942149A (en) * | 2012-11-28 | 2013-02-27 | 长沙中联消防机械有限公司 | Flexible pipe line conveying device and aerial work equipment provided with flexible pipe line conveying device |
| CN103754801A (en) * | 2011-08-10 | 2014-04-30 | 马世中 | Overhead pipeline conveying system |
| CN203602267U (en) * | 2013-10-12 | 2014-05-21 | 南京晨光水山电液特装有限公司 | Asynchronous telescoping built-in pipeline conveying system of aerial work platform |
| CN205399217U (en) * | 2016-02-19 | 2016-07-27 | 重庆市智翔铺道技术工程有限公司 | Bridge floor spraying device |
| CN208750152U (en) * | 2018-07-31 | 2019-04-16 | 徐工集团工程机械有限公司 | Telescopic jib system and engineering machinery |
| CN111153333A (en) * | 2020-01-22 | 2020-05-15 | 徐工消防安全装备有限公司 | Telescopic working arm, telescopic operation device and elevating fire truck |
-
2020
- 2020-11-06 CN CN202011232613.XA patent/CN112627022A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU895881A1 (en) * | 1978-06-30 | 1982-01-07 | Институт Манипулачних,Доправних,Обаловых А Складовацих Систему (Инопредприятие) | Automatic apparatus for uncoupling rigging |
| DE3433178A1 (en) * | 1984-09-10 | 1986-03-20 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | BRIDGE UNIT |
| CN102029034A (en) * | 2009-09-29 | 2011-04-27 | 徐州重型机械有限公司 | Engineering machine and telescopic arm thereof |
| CN201746291U (en) * | 2010-08-05 | 2011-02-16 | 徐州重型机械有限公司 | Aloft work engineering machine and telescopic arm device thereof |
| CN103754801A (en) * | 2011-08-10 | 2014-04-30 | 马世中 | Overhead pipeline conveying system |
| CN102942149A (en) * | 2012-11-28 | 2013-02-27 | 长沙中联消防机械有限公司 | Flexible pipe line conveying device and aerial work equipment provided with flexible pipe line conveying device |
| CN203602267U (en) * | 2013-10-12 | 2014-05-21 | 南京晨光水山电液特装有限公司 | Asynchronous telescoping built-in pipeline conveying system of aerial work platform |
| CN205399217U (en) * | 2016-02-19 | 2016-07-27 | 重庆市智翔铺道技术工程有限公司 | Bridge floor spraying device |
| CN208750152U (en) * | 2018-07-31 | 2019-04-16 | 徐工集团工程机械有限公司 | Telescopic jib system and engineering machinery |
| CN111153333A (en) * | 2020-01-22 | 2020-05-15 | 徐工消防安全装备有限公司 | Telescopic working arm, telescopic operation device and elevating fire truck |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277664A (en) * | 2021-12-23 | 2022-04-05 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Telescopic mechanical bridge erecting mechanism |
| CN114277664B (en) * | 2021-12-23 | 2023-12-01 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Telescopic mechanized bridge erects mechanism |
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Application publication date: 20210409 |