CN212269378U - Aerial ladder car guide rail positioning device - Google Patents
Aerial ladder car guide rail positioning device Download PDFInfo
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- CN212269378U CN212269378U CN202020560995.8U CN202020560995U CN212269378U CN 212269378 U CN212269378 U CN 212269378U CN 202020560995 U CN202020560995 U CN 202020560995U CN 212269378 U CN212269378 U CN 212269378U
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Abstract
The utility model relates to an aerial ladder car guide rail positioner, the aerial ladder car includes multisection ladder frame (10) and multistage guide rail (20), ladder frame (10) are including slide (11) and last chord (12), guide rail (20) are installed on last chord (12), aerial ladder car guide rail positioner includes support (40), first setting element (50) and second setting element (60) are all installed on support (40), first setting element (50) are used for fixing a position support (40) with slide (11) cooperation and through the cooperation of first setting element (50) and slide (11), second setting element (60) are used for fixing a position the installation of guide rail (20) with guide rail (20) cooperation and through the cooperation of second setting element (60) and guide rail (20). The utility model discloses positioner can fix a position the installation of guide rail, improves the installation accuracy of guide rail.
Description
Technical Field
The utility model relates to an engineering machine tool technical field especially relates to an aerial ladder car guide rail positioner.
Background
The aerial ladder truck is an aerial ladder fire truck, and is provided with a special chassis, a lifting truss arm and a professional operator for operation, so that firefighters can be conveyed to a certain height, and high-altitude rescue or fire fighting operation can be realized. The aerial ladder vehicle comprises ladder frames, a slide way, a guide rail and a lifting pulley, wherein the ladder frames form truss arms of the aerial ladder fire truck, and the slide way is a running track of each arm of the truss arms of the aerial ladder vehicle in the telescopic process. The guide rail is arranged on the upper chord of the ladder frame, is a long and thin angle steel and is a running track of the lifting tackle during working. The lifting pulley runs on the top of a truss arm of the aerial ladder vehicle and is used for lifting the manned platform during quick rescue.
Whether the lifting pulley of the aerial ladder fire truck can run smoothly or not depends on the tailor-welding quality of the guide rails, and the guide rails are long and thin angle steels and have large deflection, so that the width between the guide rails on the left side and the right side and the height of each side guide rail are difficult to ensure in the manual tailor-welding process, the height of the guide rails on each ladder frame is also difficult to ensure to be the same, and the inclination of the guide rails cannot be ensured particularly during tailor-welding.
If the width dimension between the left guide rail and the right guide rail cannot be ensured, the guide wheels of the lifting pulley can be clamped by the guide rails on the two sides, and clamping stagnation can occur in the running process, even the running can not be carried out; if the height dimension of each side guide rail cannot be ensured, the upper plane of the guide rail is uneven; if the height of the guide rail on each ladder frame cannot be guaranteed to be the same, the lifting pulley can obviously shake when running from the previous ladder frame to the next ladder frame, and even the lifting pulley can not run normally because the lifting pulley is separated from the guide rail at the transition position of the two ladder frames; if the guide rail is inclined during tailor-welding, the guide wheel is always in line contact with the guide rail during the operation of the lifting pulley, so that the local excessive abrasion of the guide wheel is easily caused, and the service life of the lifting pulley is reduced. Therefore, the guide rails are not inclined after splicing welding, the width and the height of the guide rails on two sides and the height of the guide rail on each section of ladder frame are ensured to meet the design requirements, and the method is an important premise for determining the smooth operation of the lifting pulley.
At present, in the prior art, when a guide rail is installed, an upper chord of each ladder frame is generally used as a positioning reference, when the guide rail is spliced and welded, a line is marked on the upper surface of the upper chord in advance to determine the transverse dimension of a single-side guide rail relative to the corresponding upper chord, and then the guide rail is manually centered to be spliced and welded in sections.
The scheme that only uses the unilateral upper chord member as the positioning reference during the tailor-welding of the guide rail is easily influenced by the upper chord member, the width and the height of the left and right guide rails of a single-section ladder frame cannot be ensured, the space relative position of the guide rail cannot be determined, and the space relative position of the guide rail between all sections of ladder frames cannot be determined, and the concrete analysis is as follows:
(1) the width dimension between the guide rails on the two sides of the ladder frame can not be ensured: the position of the upper chord in the space can generate local deformation along with the increase of welding heat input, finally, the space position size of the upper chord and the theoretical size can have deviation, and if the guide rail is installed and positioned by taking the upper chord as a reference, errors can be accumulated continuously;
(2) the height dimension of the guide rails on the two sides of the ladder rack cannot be ensured: due to the limitation of the structural form of the ladder frame, the lower part of the upper chord is provided with the segmented support, the upper chord can form wave deformation in different degrees after the ladder frame is welded, so that the upper plane of the upper chord is uneven, and the upper plane of the guide rail is finally uneven inevitably when the guide rail is installed by taking the upper plane of the upper chord as a reference;
(3) the height dimension of the guide rail between the ladder frames can not be ensured: the height dimension between the upper chord and the slide way inevitably has different deviations along the axis direction of the ladder frame, so that after the assembly of each section of ladder frame is completed, the height of the guide rail between each section of ladder frame is inconsistent when the ladder frame extends for different lengths, and if the guide rail is installed by taking the upper chord as a reference for positioning, the problem of height inconsistency of the guide rail between each section of ladder frame can also occur.
It is noted that the information disclosed in this background section of the invention is only for enhancement of understanding of the general background of the invention, and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an aerial ladder car guide rail positioner for fix a position the guide rail when the installation guide rail, improve the installation accuracy of guide rail.
According to the utility model discloses an aspect provides an aerial ladder car guide rail positioner, the aerial ladder car includes multisection ladder frame and multistage guide rail, and the ladder frame includes slide and upper chord, and the guide rail is installed on the upper chord, and aerial ladder car guide rail positioner includes:
a support;
the first positioning piece is arranged on the bracket and is used for being matched with the slide way and positioning the bracket through the matching of the first positioning piece and the slide way; and
and the second positioning piece is arranged on the bracket and is used for being matched with the guide rail and positioning the installation of the guide rail through the matching of the second positioning piece and the guide rail.
In some embodiments, the aerial ladder vehicle rail positioning device further comprises a first mounting plate mounted on the bottom side of the bracket, and the first positioning member is mounted on the first mounting plate.
In some embodiments, the aerial ladder vehicle rail positioning device further comprises a second mounting plate, the second mounting plate is mounted on the top side of the support, and the second positioning member is mounted on the second mounting plate.
In some embodiments, the first positioning member comprises a first roller.
In some embodiments, the second positioning member includes a second roller and a boss disposed on the second roller, the boss extending radially outward from an outer surface of the second roller, the boss for abutting against the guide rail.
In some embodiments, the axes of the first and second rollers are parallel to each other.
In some embodiments, the stent is in the shape of a cuboid.
In some embodiments, the aerial ladder vehicle guide rail positioning device comprises 4 first positioning parts and 4 second positioning parts, wherein the 4 first positioning parts are respectively arranged at 4 corners of the bottom of the support, and the 4 second positioning parts are respectively arranged at 4 corners of the top of the support.
In some embodiments, the stent includes a stent body and diagonal rods connected to diagonals of the stent body.
In some embodiments, the stents are connected using hollow tubes.
Based on the technical scheme, the embodiment of the utility model provides an aerial ladder car guide rail positioner, this positioner include support, first setting element and second setting element, through the cooperation of the slide of first setting element and aerial ladder car, can fix a position first setting element, and after the position of first setting element was confirmed, the position of support and second setting element also can be confirmed, and then fixes a position the guide rail through the cooperation of second setting element and guide rail. The positioning device takes the slide way of the aerial ladder vehicle as a positioning reference, and positions the guide rail through the positioning device when the guide rail is installed, so that the installation precision of the guide rail can be effectively ensured, and the running stability of the tackle of the aerial ladder vehicle on the guide rail is further ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic structural view of an aerial ladder vehicle using the aerial ladder vehicle guide rail positioning device of the utility model, wherein the guide rail is installed in one embodiment.
Fig. 2 is a partial structure schematic diagram of an aerial ladder vehicle using the aerial ladder vehicle guide rail positioning device of the utility model to install guide rails.
Fig. 3 is a schematic structural view of a ladder frame of an aerial ladder car using the aerial ladder car guide rail positioning device of the present invention to install guide rails.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a schematic view of the matching structure between an embodiment of the aerial ladder car guide rail positioning device and the guide rail of the present invention.
Fig. 6 is a left side view of fig. 5.
In the figure:
10. a ladder frame; 11. a slideway; 12. an upper chord; 13. a side lever;
20. a guide rail; 30. a pulley;
40. a support; 41. a stent body; 42. a diagonal bar;
50. a first positioning member; 51. a first roller;
60. a second positioning member; 61. a second roller; 62. a boss;
70. a first mounting plate; 80. a second mounting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "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 of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the invention.
In order to solve the relatively poor problem of guide rail installation accuracy that the scheme that adopts above chord member for location benchmark installation guide rail exists among the prior art, the utility model provides an aerial ladder car guide rail positioner can fix a position the guide rail when installing the guide rail through this positioner to guarantee the installation accuracy of guide rail, improve the stationarity and the security of the coaster of operation on the guide rail.
As shown in fig. 1, the utility model provides a cloud ladder car that cloud ladder car guide rail positioner embodiment was suitable for includes multisection ladder frame 10 and multistage guide rail 20, and ladder frame 10 includes slide 11 and upper chord 12, can take place relative motion along slide 11 between the adjacent two sections ladder frame 10 to realize the flexible of the truss arm that multisection ladder frame 10 is constituteed, guide rail 20 installs on upper chord 12.
As shown in fig. 2, the aerial ladder vehicle further comprises a trolley 30, the trolley 30 moves along the guide rail 20, the multi-section ladder frames 10 are connected end to form a telescopic truss arm, when the truss arm is extended, the trolley 30 can move along the guide rail 20 to the farthest end of the truss arm to send people to high, and the trolley 30 can also return to the ground along the guide rail 20; the truss arms are retracted to facilitate transition and transportation. In two adjacent ladder frames 10, the next ladder frame 10 can move along the slideway 11 relative to the previous ladder frame 10, and the expansion and contraction of the truss arm can be realized through the movement between the two adjacent ladder frames 10 along the slideway 11.
As shown in fig. 3, the ladder frame 10 includes a slideway 11, an upper chord 12 and side bars 13, the side bars 13 are connected between the slideway 11 and the upper chord 12, and a plurality of cross bars and reinforcing bars are connected between the slideways 11 at two sides to form a cantilever structure, thereby improving the overall structural strength of the cantilever.
The slideways 11 on the two sides are arranged in parallel, the upper chords 12 on the two sides are arranged in parallel, and the slideways 11 and the upper chords 12 are also arranged in parallel. A plurality of side bars 13 are provided obliquely with respect to the chute 11 and the upper chord 12. The runners 11, top chords 12 and side bars 13 may all be hollow to reduce the weight of the ladder 10.
As shown in fig. 4, the cross section of the chute 11 is C-shaped, and the cross section of the guide rail 20 is inverted L-shaped. As can be seen from fig. 1, in this embodiment, the aerial ladder vehicle includes 6 sections of ladder frames 10, and the guide rails 20 mounted on two adjacent sections of ladder frames 10 are oppositely disposed, that is, the lateral portions of the two guide rails 20 extend opposite to each other, so as to cooperate with the T-shaped bosses provided on the lateral surfaces of the rollers provided on the trolley 30, and limit the trolley 30 when the trolley 30 transitions between the two sections of ladder frames 10, so as to prevent the trolley 30 from derailing, and ensure the safety of the running of the trolley 30.
Referring to fig. 5 and 6, in some embodiments of the aerial ladder car rail positioning device provided by the present invention, the positioning device includes a support 40, a first positioning member 50 and a second positioning member 60, the first positioning member 50 and the second positioning member 60 are both installed on the support 40, the first positioning member 50 is used for cooperating with the slide 11 and positioning the support 40 through cooperation of the first positioning member 50 and the slide 11, and the second positioning member 60 is used for cooperating with the rail 20 and positioning installation of the rail 20 through cooperation of the second positioning member 60 and the rail 20.
In the above embodiment, the positioning device includes the bracket 40, the first positioning element 50 and the second positioning element 60, the first positioning element 50 can be positioned by the cooperation of the first positioning element 50 and the slideway 11 of the aerial ladder vehicle, after the position of the first positioning element 50 is determined, the positions of the bracket 40 and the second positioning element 60 can also be determined, and then the guide rail 20 is positioned by the cooperation of the second positioning element 60 and the guide rail 20. The positioning device takes the slide way 11 of the aerial ladder vehicle as a positioning reference, and positions the guide rail 20 through the positioning device when the guide rail 20 is installed, so that the installation precision of the guide rail can be effectively ensured, and the running stability of the tackle of the aerial ladder vehicle on the guide rail is further ensured.
In order to smoothly realize the extension and retraction of each section of the ladder frame 10, the slide rails 11 on the two sides of the ladder frame 10 are accurately arranged, so that the slide rails 11 are used as the installation reference of the guide rail 20, the installation precision of the guide rail 20 can be greatly improved, and the influence of factors such as the installation error and the thermal deformation of the upper chord 12 on the installation of the guide rail 20 is avoided.
The positioning device takes the slide rail 11 of the ladder frame 10 as a positioning reference, the width dimension of the guide rails 20 on two sides can be effectively ensured through the second positioning piece 60, and the width dimension of the guide rails 20 cannot be ensured due to the change of the space position of the upper chord 12 caused by the welding deformation of the ladder frame 10.
In the positioning device, the heights of the first positioning piece 50 and the second positioning piece 60 are determined, the positioning device is adopted to position the upper end surfaces of the guide rails 20 by using the slide rail 11 of the ladder frame 10 as a positioning reference and the second positioning piece 60, so that the heights of the guide rails 20 on two sides can be ensured to be consistent, and the height dimension cannot be influenced by the wave deformation of the upper chord 12.
The positioning device takes the slide way 11 of the ladder frame 10 as a positioning reference, and also takes the slide way 11 which extends and contracts as a reference when being installed on the next ladder frame 10, therefore, the space position of the guide rail 20 on the two adjacent ladder frames 10 can be ensured to be accurate, and the interchangeability between the ladder frames 10 is good.
In some embodiments, the aerial ladder rail positioning device further comprises a first mounting plate 70, the first mounting plate 70 being mounted on the bottom side of the bracket 40, and the first positioning member 50 being mounted on the first mounting plate 70.
By providing the first mounting plate 70, the mounting of the first positioning member 50 may be facilitated. The first mounting plate 70 may be fixedly mounted on the bracket 40 by bolts.
In some embodiments, the aerial ladder rail positioning device further comprises a second mounting plate 80, the second mounting plate 80 being mounted on a top side of the support 40, and the second positioning member 60 being mounted on the second mounting plate 80.
By providing the second mounting plate 80, the mounting of the second positioning member 60 may be facilitated. The second mounting plate 80 may be fixedly mounted on the bracket 40 by bolts.
In some embodiments, the first positioning member 50 includes a first roller 51, and the first roller 51 is rotatably mounted on the first mounting plate 70. The first roller 51 is adopted as the first positioning piece 50, so that the movement of the first positioning piece 50 relative to the slideway 11 can be facilitated, and the moving resistance can be reduced. Through the roll of first setting element 50 for slide 11, can reduce the length requirement to support 40, can the segmentation tailor-welding when installing guide rail 20, promote support 40 after one section tailor-welding and slide to next section along slide 11 of ladder frame 10 and weld again, until the guide rail 20 installation on the whole section ladder frame 10 is accomplished.
In some embodiments, the second positioning member 60 includes a second roller 61 and a boss 62 disposed on the second roller 61, the boss 62 extending radially outward from an outer surface of the second roller 61, the boss 62 for abutting against the rail 20. The second roller 61 is rotatably mounted on the second mounting plate 80, the boss 62 is fixedly mounted on the second roller 61 or integrally formed with the second roller 61, and the boss 62 rotates with the second roller 61. The second roller 61 is adopted as the second positioning member 60, so that the movement of the second positioning member 60 relative to the slideway 11 can be facilitated, and the moving resistance can be reduced. The length requirement of the carriage 40 can also be reduced by rolling the second positioning member 60 relative to the slideway 11.
In some embodiments, the axes of the first roller 51 and the second roller 61 are parallel to each other.
As shown in fig. 6, the first roller 51 and the second roller 61 are both disposed outside the bracket 40 and arranged horizontally, the first roller 51 can be inserted into the C-shaped opening of the slideway 11, the second roller 61 abuts against the lateral side of the L-shaped rail 20, and the side of the boss 62 abuts against the vertical side of the L-shaped rail 20.
The first roller 51 and the second roller 61 may be machined from steel, plastic, nylon.
In some embodiments, the bracket 40 has a rectangular parallelepiped shape. The structure is convenient for assembly and molding, has better structural strength and is not easy to deform.
In some embodiments, the aerial ladder rail positioning device includes 4 first positioning members 50 and 4 second positioning members 60, wherein the 4 first positioning members 50 are respectively disposed at 4 corners of the bottom of the support 40, and the 4 second positioning members 60 are respectively disposed at 4 corners of the top of the support 40.
The 4 first positioning members 50 and the 4 second positioning members 60 are horizontally arranged.
In some embodiments, the bracket 40 includes a bracket body 41 and a diagonal bar 42 connected to a diagonal line of the bracket body 41. The structural strength of the holder body 41 can be improved by providing the diagonal member 42.
In some embodiments, the braces 40 are connected using hollow tubes to reduce the overall weight of the braces 40. For example, the bracket 40 may be formed by welding a square steel pipe, a rectangular steel pipe, an angle steel, a channel steel, and a steel plate.
In some embodiments, a first spacer is disposed between the first mounting plate 70 and the first roller 51; and/or a second gasket is arranged between the second mounting plate 80 and the second roller 61. Through set up first gasket or second gasket between gyro wheel and mounting panel, can finely tune the mounted position of first gyro wheel 51 and second gyro wheel 61, compensate the cooperation problem that manufacturing error and assembly error brought.
Through right the utility model discloses aerial ladder car guide rail positioner's a plurality of embodiments's explanation can see be in the utility model discloses aerial ladder car guide rail positioner embodiment is nested formula structural style between each section ladder frame 10, and the slide 11 of the complete above-mentioned section ladder frame 10 of assembly and motion of next section ladder frame 10 is the benchmark, and the high position of the last chord 12 of each section ladder frame 10 in the space depends on the slide 11 height of last section ladder frame 10 completely. The aerial ladder car guide rail positioning device uses the slide rail 11 as a reference to position the guide rail 20, uses the respective slide rail 11 of a single section of ladder frame 10 as a positioning reference, and completes the installation of the guide rail 20 above the upper chords 12 on two sides by means of segmented tailor welding, and under the condition of ensuring the height dimension of the slide rail 11 of each section of ladder frame 10, the installation of the guide rail 20 on each section of ladder frame 10 is the same positioning reference, so that the spatial position of the guide rail 20 is relatively determined, the width and the height of the guide rails 20 on two sides can be kept fixed, and the height dislocation phenomenon between the guide rail 20 and the guide rail 20 on two adjacent sections of ladder frames 10 can not occur.
The operation steps of installing the guide rail 20 by using the aerial ladder car guide rail positioning device in the above embodiments include:
providing a guide rail positioning device of the aerial ladder vehicle;
the first positioning piece 50 is matched with the slideway 11, and the bracket 40 is positioned through the matching of the first positioning piece 50 and the slideway 11;
fitting the second positioning member 60 with the guide rail 20, and positioning the guide rail 20 by fitting the second positioning member 60 with the guide rail 20; and
after the position of the guide rail 20 is determined, the guide rail 20 and the upper chord 12 are connected.
In some embodiments, the operating step further comprises:
providing a plurality of aerial ladder vehicle guide rail positioning devices, wherein the widths of the brackets 40 of the aerial ladder vehicle guide rail positioning devices correspond to the widths of the slideways 11 on the two sides of the multi-section ladder frame 10 one by one; and
the guide rails 20 are installed on the upper chords 12 of the corresponding ladder frames 10 one by the aerial ladder car guide rail positioning device.
Through providing the different positioner of a plurality of widths, can correspond the ladder frame of width difference respectively, realize the guide rail installation of whole truss arm.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the utility model discloses a do not deviate from under the prerequisite of the principle, still can be right the utility model discloses a specific embodiment modifies or carries out the equivalent replacement to some technical features, and these are modified and should be covered with the equivalent replacement in the middle of the technical scheme scope of the utility model.
Claims (10)
1. The utility model provides an aerial ladder car guide rail positioner, the aerial ladder car includes multisection ladder frame (10) and multistage guide rail (20), ladder frame (10) are including slide (11) and upper chord (12), install guide rail (20) on upper chord (12), its characterized in that, aerial ladder car guide rail positioner includes:
a bracket (40);
the first positioning piece (50) is arranged on the bracket (40) and is used for being matched with the slide way (11) and positioning the bracket (40) through the matching of the first positioning piece (50) and the slide way (11); and
the second positioning piece (60) is installed on the support (40) and used for being matched with the guide rail (20) and positioning the installation of the guide rail (20) through the matching of the second positioning piece (60) and the guide rail (20).
2. The aerial ladder car rail positioning device as claimed in claim 1, further comprising a first mounting plate (70), the first mounting plate (70) being mounted on a bottom side of the bracket (40), the first positioning member (50) being mounted on the first mounting plate (70).
3. The aerial ladder car rail positioning device as claimed in claim 1, further comprising a second mounting plate (80), wherein the second mounting plate (80) is mounted on a top side of the bracket (40), and the second positioning member (60) is mounted on the second mounting plate (80).
4. The aerial ladder car rail positioning device of claim 1, wherein the first positioning member (50) comprises a first roller (51).
5. The aerial ladder car rail positioning device as claimed in claim 4, wherein the second positioning member (60) comprises a second roller (61) and a boss (62) provided on the second roller (61), the boss (62) extending radially outward from an outer surface of the second roller (61), the boss (62) being adapted to abut against the rail (20).
6. Aerial ladder car rail positioning device according to claim 5, characterized in that the axes of the first roller (51) and the second roller (61) are parallel to each other.
7. The aerial ladder car rail positioning device as claimed in claim 1, wherein the bracket (40) is rectangular parallelepiped shaped.
8. The aerial ladder car guide rail positioning device as claimed in claim 7, wherein the aerial ladder car guide rail positioning device comprises 4 first positioning members (50) and 4 second positioning members (60), wherein 4 first positioning members (50) are respectively arranged at 4 corners of the bottom of the bracket (40), and 4 second positioning members (60) are respectively arranged at 4 corners of the top of the bracket (40).
9. The aerial ladder car rail positioning device according to claim 7, wherein the bracket (40) includes a bracket body (41) and a diagonal bar (42) connected to a diagonal line of the bracket body (41).
10. The aerial ladder car guide rail positioning device as claimed in any one of claims 1 to 9, wherein the brackets (40) are connected by hollow pipes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020560995.8U CN212269378U (en) | 2020-04-16 | 2020-04-16 | Aerial ladder car guide rail positioning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020560995.8U CN212269378U (en) | 2020-04-16 | 2020-04-16 | Aerial ladder car guide rail positioning device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324504A (en) * | 2021-05-28 | 2021-08-31 | 徐工消防安全装备有限公司 | Guide rail length detection device and method and fire fighting truck |
| CN114229760A (en) * | 2022-02-24 | 2022-03-25 | 徐工消防安全装备有限公司 | High-altitude operation vehicle and control method thereof |
| CN114572915A (en) * | 2022-03-18 | 2022-06-03 | 徐工消防安全装备有限公司 | Lifting pulley and aerial ladder fire truck |
-
2020
- 2020-04-16 CN CN202020560995.8U patent/CN212269378U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324504A (en) * | 2021-05-28 | 2021-08-31 | 徐工消防安全装备有限公司 | Guide rail length detection device and method and fire fighting truck |
| CN114229760A (en) * | 2022-02-24 | 2022-03-25 | 徐工消防安全装备有限公司 | High-altitude operation vehicle and control method thereof |
| CN114572915A (en) * | 2022-03-18 | 2022-06-03 | 徐工消防安全装备有限公司 | Lifting pulley and aerial ladder fire truck |
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