CN220566891U - Cantilever mechanism and bridge detection device - Google Patents

Abstract

The utility model discloses a cantilever mechanism and discloses a bridge detection device with the cantilever mechanism, wherein the cantilever mechanism comprises a cantilever component, a telescopic component, a first visual detection component, a second visual detection component, a first transmission structure and a first driving component, the telescopic component is in an extending state and a shortening state, the telescopic component comprises a first sliding seat and a second sliding seat, the first sliding seat is slidably arranged on the cantilever component, the second sliding seat is slidably arranged on the first sliding seat, the first visual detection component is arranged on the first sliding seat, the second visual detection component is arranged on the second sliding seat, the first driving component can drive the first sliding seat and the second sliding seat to synchronously slide through the first transmission structure, so that the telescopic component can be switched between the extending state and the shortening state, and the first visual detection component and the second visual detection component can simultaneously detect different positions of the bridge in the width direction, and the detection efficiency of the bridge detection device can be improved.

Description

Cantilever mechanism and bridge detection device

Technical Field

The utility model relates to the technical field of road and bridge engineering machinery, in particular to a cantilever mechanism and a bridge detection device.

Background

In the traditional bridge detection process, especially the bridge lower part detects, need have the bridge detection device of U font cantilever to hang visual detection subassembly to the bridge lower part, however current cantilever in order to realize the flexible of visual detection subassembly, leads to visual detection subassembly only to dispose one, can't carry out visual detection to a plurality of positions of bridge simultaneously, can't improve bridge detection device's detection efficiency.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the cantilever mechanism which can improve the detection efficiency of the bridge detection device.

The utility model also provides a bridge detection device with the cantilever mechanism.

According to the cantilever mechanism, the cantilever mechanism comprises a cantilever component, a telescopic component, a first visual detection component, a second visual detection component, a first transmission structure and a first driving component, wherein the cantilever component is used for being connected with a bridge inspection vehicle, the telescopic component is provided with an extension state and a shortening state, the telescopic component comprises a first sliding seat and a second sliding seat, the first sliding seat is slidably arranged on the cantilever component, the second sliding seat is slidably arranged on the first sliding seat, the first visual detection component is arranged on the first sliding seat, the second visual detection component is arranged on the second sliding seat, the first transmission structure comprises a first rack, a second rack and a first gear, the first rack is arranged on the cantilever component, the second rack is arranged on the second sliding seat, the first gear is rotatably arranged on the first sliding seat, the first rack is respectively meshed with the first rack and the second rack, the first driving component is arranged on the first transmission structure and the first sliding seat, and the first driving component can be synchronously driven by the first transmission structure and the first sliding seat.

The cantilever mechanism according to the embodiment of the first aspect of the utility model has at least the following beneficial effects:

when detecting the bridge, the telescopic assembly is in a shortened state, the first driving assembly can be started, the first driving assembly can drive the first sliding seat to slide relative to the cantilever assembly, as the first gear is meshed with the first rack, and the first gear is meshed with the second rack, when the first sliding seat slides relative to the cantilever assembly, the first rack can drive the first gear to rotate, the first gear can drive the second rack to move, and accordingly the second sliding seat is driven to slide, so that the first sliding seat and the second sliding seat can synchronously slide, the telescopic assembly is switched to an elongation state by the shortened state, the distance between the first visual detection assembly and the second visual detection assembly is increased, so that the first visual detection assembly and the second visual detection assembly can simultaneously detect different positions of the bridge in the width direction, and after detection is completed, the first driving assembly can drive the first sliding seat to move in the opposite direction, so that the telescopic assembly is switched to the shortened state by the elongated state, the distance between the first visual detection assembly and the second visual detection assembly is reduced, and the detection efficiency of the bridge detection device can be improved.

According to some embodiments of the utility model, the cantilever assembly comprises a first cantilever, a lifting rod set and a second cantilever, wherein the fixed end of the lifting rod set is connected with the first cantilever, the movable end of the lifting rod set is connected with the second cantilever, the first cantilever is used for being connected with the bridge inspection vehicle, and the first sliding seat is connected with the second cantilever in a sliding manner.

According to some embodiments of the utility model, a first damping assembly is provided between the first carriage and the second boom, the first damping assembly being adapted to overcome the inertia of movement of the first carriage.

According to some embodiments of the utility model, the first damping assembly includes a first friction member provided to the second cantilever and a second friction member provided to the first slider, the first friction member being slidably coupled to the second friction member.

According to some embodiments of the utility model, a first elastic member is disposed between the first friction member and the second cantilever, and the first elastic member is configured to move the first friction member in a direction approaching the second friction member.

According to some embodiments of the utility model, a first limiting structure is disposed between the first sliding seat and the second cantilever, and the first limiting structure is used for limiting the length of the first sliding seat extending out of the second cantilever.

According to some embodiments of the utility model, the first limiting structure includes a first limiting portion provided on the second cantilever and a second limiting portion provided on the first slider, and when the telescopic assembly is in the extended state, the first limiting portion abuts against the second limiting portion.

According to some embodiments of the utility model, a first guide structure is provided between the first carriage and the second cantilever.

According to some embodiments of the utility model, the first guiding structure includes a first guiding strip provided on the first sliding seat and a first guiding groove provided on the second cantilever, and the first guiding strip is accommodated in the first guiding groove.

The bridge inspection device according to the second aspect of the present utility model includes the cantilever mechanism described in the above embodiment.

The bridge detection device according to the embodiment of the second aspect of the utility model has at least the following beneficial effects:

when detecting the bridge, the telescopic assembly is in a shortened state, the first driving assembly can be started, the first driving assembly can drive the first sliding seat to slide relative to the cantilever assembly, as the first gear is meshed with the first rack, and the first gear is meshed with the second rack, when the first sliding seat slides relative to the cantilever assembly, the first rack can drive the first gear to rotate, the first gear can drive the second rack to move, and accordingly the second sliding seat is driven to slide, so that the first sliding seat and the second sliding seat can synchronously slide, the telescopic assembly is switched to an elongation state by the shortened state, the distance between the first visual detection assembly and the second visual detection assembly is increased, so that the first visual detection assembly and the second visual detection assembly can simultaneously detect different positions of the bridge in the width direction, and after detection is completed, the first driving assembly can drive the first sliding seat to move in the opposite direction, so that the telescopic assembly is switched to the shortened state by the elongated state, the distance between the first visual detection assembly and the second visual detection assembly is reduced, and the detection efficiency of the bridge detection device can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a telescopic assembly according to an embodiment of the present utility model in an extended state;

FIG. 2 is a schematic view of a telescopic assembly according to an embodiment of the present utility model in a contracted state;

FIG. 3 is a schematic diagram illustrating an assembly of a second boom and a telescoping assembly according to an embodiment of the present utility model;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an enlarged view of a portion B of FIG. 5;

fig. 7 is an assembly schematic diagram of a first slider and a first gear according to an embodiment of the utility model.

Reference numerals:

the first cantilever 110, the lifting rod set 120, the first rod body 121, the second rod body 122, the second cantilever 130, the first accommodating groove 131, the first limiting part 132, the first guiding groove 133, the telescopic assembly 200, the first sliding seat 210, the second accommodating groove 211, the second limiting part 212, the first guiding strip 213, the third limiting part 214, the second guiding groove 215, the second sliding seat 220, the fourth limiting part 221, the second guiding strip 222, the first visual detection assembly 310, the second visual detection assembly 320, the first rack 410, the second rack 420, the first gear 430, the first driving assembly 500, the first friction piece 610, the second friction piece 620, the first elastic piece 630, the third friction piece 710, the fourth friction piece 720, and the second elastic piece 730.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, the cantilever mechanism according to the first aspect of the present utility model includes a cantilever assembly, a telescopic assembly 200, a first visual inspection assembly 310, a second visual inspection assembly 320, a first transmission structure and a first driving assembly 500, wherein the cantilever assembly is used for connecting with a bridge inspection vehicle, the telescopic assembly 200 has an extended state and a shortened state, the telescopic assembly 200 includes a first slide 210 and a second slide 220, the first slide 210 is slidably disposed on the cantilever assembly, the second slide 220 is slidably disposed on the first slide 210, the first visual inspection assembly 310 is disposed on the first slide 210, the second visual inspection assembly 320 is disposed on the second slide 220, the first transmission structure includes a first rack 410, a second rack 420 and a first gear 430, the first rack 410 is disposed on the second slide 220 of the cantilever assembly, the first gear 430 is rotatably disposed on the first slide 210, the first rack 410 is opposite to the second rack 420, and the first gear 430 is engaged with the first rack 410 and the second rack 420, respectively, the first driving assembly 500 is disposed on the cantilever assembly, the output end of the first driving assembly 500 is connected with the first slider 210, and the first driving assembly 500 can drive the first slider 210 and the second slider 220 to slide synchronously through the first transmission structure, so that the telescopic assembly 200 is switched between the extended state and the shortened state, so that when the bridge is detected by disposing the telescopic assembly 200 and the first transmission structure, the distance between the first visual inspection assembly 310 and the second visual inspection assembly 320 can be increased or decreased along with the synchronous sliding of the first slider 210 and the second slider 220, so that the first visual inspection assembly 310 and the second visual inspection assembly 320 can detect different positions of the bridge in the width direction at the same time, the detection efficiency of the bridge detection device can be improved.

Specifically, when the bridge is detected, the telescopic assembly 200 is in a shortened state, the first driving assembly 500 may be started, so that the first driving assembly 500 may drive the first sliding seat 210 to slide relative to the cantilever assembly, since the first gear 430 is meshed with the first rack 410 and the first gear 430 is meshed with the second rack 420, when the first sliding seat 210 slides relative to the cantilever assembly, the first rack 410 may drive the first gear 430 to rotate, so that the first gear 430 may drive the second rack 420 to move, thereby driving the second sliding seat 220 to slide, and thus, the first sliding seat 210 and the second sliding seat 220 may slide synchronously, the telescopic assembly 200 is switched from the shortened state to the extended state, the distance between the first visual detection assembly 310 and the second visual detection assembly 320 may be increased, so that the first visual detection assembly 310 and the second visual detection assembly 320 may detect different positions of the bridge in the width direction at the same time, and after the detection, the first driving assembly 500 may drive the first sliding seat 210 to move in the opposite direction, so that the telescopic assembly 200 may be switched from the extended state to the shortened state, so that the distance between the first visual detection assembly 310 and the second visual detection assembly 320 may be reduced, i.e. the bridge detection device may be improved.

It should be noted that, the first transmission structure is configured with two first racks 410, two second racks 420 and two first gears 430, which are respectively configured with two first gears 430, are oppositely disposed along the width direction of the first sliding seat 210, the two first racks 410 are oppositely disposed, and the two second racks 420 are oppositely disposed, so that the transmission stability of the first transmission structure can be improved, which is not described in detail herein.

It should be noted that, in some embodiments, the telescopic assembly 200 may further include a third sliding seat, the third sliding seat is connected with a third visual detection assembly, the third sliding seat is slidably disposed on the second sliding seat 220, and the cantilever mechanism may include a second transmission structure, the second transmission structure includes a third rack, a fourth rack and a second gear, the third rack is disposed on the first sliding seat 210, the fourth rack is disposed on the third sliding seat, the second gear is rotatably disposed on the second sliding seat 220, the third rack is disposed opposite to the fourth rack, and the second gear is engaged with the third rack and the fourth rack respectively, and the second gear is disposed between the third rack and the fourth rack, so that the second sliding seat 220 and the third sliding seat can realize synchronous movement through the second transmission structure, and thus, the first sliding seat 210, the second sliding seat 220 and the third sliding seat can realize synchronous movement, so as to drive the first visual detection assembly 310, the second visual detection assembly 320 and the third visual detection assembly to move synchronously, and the detection efficiency of the bridge detection device can be further improved.

Of course, in some embodiments, the telescoping assembly 200 may also include a fourth carriage, a fifth carriage, etc., without limitation.

It is understood that the first driving assembly 500 may be an air cylinder, or a motor and a ball screw in a matched driving manner, or may be other conventional driving components such as a hydraulic cylinder. The specific embodiments can be adjusted according to the actual needs, and are not limited herein.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the cantilever assembly includes a first cantilever 110, a lifting rod set 120 and a second cantilever 130, wherein a fixed end of the lifting rod set 120 is connected to the first cantilever 110, a movable end of the lifting rod set 120 is connected to the second cantilever 130, the first cantilever 110 is used for being connected to a bridge inspection vehicle, and the first sliding seat 210 is slidably connected to the second cantilever 130, so that the second cantilever 130 can move up and down along the bridge, so as to adapt to bridges with different thicknesses, and improve versatility of a cantilever mechanism.

Specifically, the lifting rod set 120 is disposed along the up-down direction, the first cantilever 110, the lifting rod set 120 and the second cantilever 130 are integrally in a U-shaped structure, one end of the first cantilever 110, which is far away from the lifting rod set 120, can be connected with the bridge inspection vehicle, the lifting rod set 120 comprises a first rod body 121, a second rod body 122 and a second driving assembly, the second rod body 122 is inserted into the first rod body 121 and can move along the axial direction of the first rod body 121, the second driving assembly is disposed on the first rod body 121, and the output end of the second driving assembly is connected with the second rod body 122 so as to drive the second rod body 122 to move along the axial direction of the first rod body 121, so that the second cantilever 130 can move up and down along bridges with different thicknesses.

It should be noted that, the first cantilever 110 is a truss structure, which not only can reduce the overall weight of the cantilever mechanism, but also can improve the structural strength of the cantilever mechanism, which will not be described in detail herein.

It is understood that the second driving component may be an air cylinder, or a motor and a ball screw for driving, or may be a hydraulic cylinder or other conventional driving components. The specific embodiments can be adjusted according to the actual needs, and are not limited herein.

Referring to fig. 3 and 4, in some embodiments of the present utility model, the second cantilever 130 is provided with a first receiving groove 131, the first rack 410 is provided on a sidewall of the first receiving groove 131, and the first slider 210 is partially received in the first receiving groove 131, so that not only the overall height of the second cantilever 130 and the first slider 210 can be reduced, but also the first slider 210 can be positioned to facilitate assembly of the first slider 210.

It should be noted that, the first slider 210 is provided with the second accommodating groove 211, and the second slider 220 is partially accommodated in the second accommodating groove 211, so that not only the overall thickness of the telescopic assembly 200 can be reduced, but also the assembly of the telescopic assembly 200 can be facilitated.

Referring to fig. 5 to 7, in some embodiments of the present utility model, a first damping component is disposed between the first sliding seat 210 and the second cantilever 130, and the first damping component is configured to overcome the movement inertia of the first sliding seat 210, so as to avoid the situation that the first sliding seat 210 moves freely, so that the first visual detection component 310 can stay at a preset position stably, and the detection precision of the first visual detection component 310 can be improved.

Referring to fig. 5 to 7, in some embodiments of the present utility model, the first damping assembly includes a first friction member 610 disposed on the second cantilever 130 and a second friction member 620 disposed on the first slider 210, and the first friction member 610 is slidably connected with the second friction member 620 so as to overcome the movement inertia of the first slider 210, so that the first slider 210 can be prevented from freely moving, and the first visual inspection assembly 310 can stably stay at a predetermined position, so that the inspection accuracy of the first visual inspection assembly 310 can be improved.

Specifically, the first friction member 610 is disposed along the length direction of the second cantilever 130, the second friction member 620 is disposed at one side of the width direction of the first slider 210 and extends along the length direction of the first slider 210, and the second friction member 620 can slide on the first friction member 610 to generate a friction resistance for limiting the movement of the first slider 210, so as to overcome the movement inertia of the first slider 210, and avoid the occurrence of free movement of the first slider 210, so that the first visual detection assembly 310 can stably stay at a preset position, and the detection accuracy of the first visual detection assembly 310 can be improved.

Of course, in some embodiments, the first damping component may also be a first magnetic attraction piece disposed on the second cantilever 130 and a second magnetic attraction piece disposed on the first sliding seat 210, where the first magnetic attraction piece and the second magnetic attraction piece are disposed opposite to each other, and the first magnetic attraction piece and the second magnetic attraction piece are opposite in magnetism, so that the second cantilever 130 can attract the first sliding seat 210 through the first damping component, and also can absorb movement inertia of the first sliding seat 210, which is not described in detail herein.

Referring to fig. 5 to 7, in some embodiments of the present utility model, a second damping component is disposed between the first slider 210 and the second slider 220, and the second damping component is configured to overcome the movement inertia of the second slider 220, so as to avoid the occurrence of free movement of the second slider 220, so that the second visual detection component 320 can stably stay at a preset position, and the detection accuracy of the second visual detection component 320 can be improved.

Specifically, the second damping component includes a third friction member 710 disposed on the first sliding seat 210 and a fourth friction member 720 disposed on the second sliding seat 220, where the third friction member 710 is disposed along a length direction of the first sliding seat 210, and the fourth friction member 720 is disposed on one side of the second sliding seat 220 in a width direction and extends along the length direction of the second sliding seat 220, and the third friction member 710 and the fourth friction member 720 are slidably connected to overcome a movement inertia of the second sliding seat 220, so that a situation that the second sliding seat 220 freely moves can be avoided, and the second visual detection component 320 can stably stay at a preset position, so that a detection precision of the second visual detection component 320 can be improved.

Referring to fig. 5 to 7, in some embodiments of the present utility model, a first elastic member 630 is provided between the first friction member 610 and the second cantilever 130, and the first elastic member 630 is used to move the first friction member 610 in a direction approaching the second friction member 620, so that the first friction member 610 can stably contact with the second friction member 620, thereby ensuring that the first damping assembly can stably overcome the movement inertia of the first slider 210.

Specifically, the first friction member 610 is connected to the second cantilever 130 by a first fastener, and the first friction member 610 is movable in an axial direction of the first fastener, one end of the first elastic member 630 is connected to the second cantilever 130, and the other end of the first elastic member 630 is connected to the first friction member 610, so that the first friction member 610 moves in a direction approaching the second friction member 620, so that the first friction member 610 can contact the second friction member 620, thereby ensuring that the first damping assembly can stably overcome the moving inertia of the first slider 210.

It should be noted that the first fastening member is a bolt or a screw, and the like, and is not limited thereto.

It is understood that the plurality of first elastic members 630 are disposed, and the plurality of first elastic members 630 are disposed at intervals along the length direction of the first friction member 610, which will not be described in detail herein.

The first elastic member 630 may be a compression spring or a rubber member capable of being elastically deformed in the axial direction, and may be capable of driving the first friction member 610 to move in a direction approaching the second friction member 620, which will not be described in detail herein.

In some embodiments of the present utility model, a second elastic member 730 is disposed between the third friction member 710 and the first sliding seat 210, and the second elastic member 730 is used to move the third friction member 710 in a direction approaching the fourth friction member 720, so that the third friction member 710 can stably contact with the fourth friction member 720, thereby ensuring that the second damping assembly can stably overcome the movement inertia of the second sliding seat 220.

Specifically, the third friction member 710 is connected to the first slider 210 by a second fastener, and the second friction member is movable in an axial direction of the second fastener, one end of the second elastic member 730 is connected to the first slider 210, and the other end of the second elastic member 730 is connected to the third friction member 710, so that the third friction member 710 moves in a direction approaching the fourth friction member 720, so that the third friction member 710 can contact the fourth friction member 720, thereby ensuring that the second damping assembly can stably overcome the moving inertia of the second slider 220.

It should be noted that the second fastening member is a bolt or a screw, and the like, and is not limited thereto.

It will be appreciated that the second elastic members 730 are provided in plural, and the first elastic members 630 are disposed at intervals along the length direction of the first friction member 610, which will not be described in detail herein.

The second elastic member 730 may be configured to be elastically deformed in the axial direction by a compression spring or a rubber member, and may be configured to drive the third friction member 710 to move in a direction approaching the fourth friction member 720, which will not be described in detail herein.

Referring to fig. 3 and fig. 7, in some embodiments of the present utility model, a first limiting structure is disposed between the first sliding seat 210 and the second cantilever 130, where the first limiting structure is used to limit the length of the first sliding seat 210 extending out of the second cantilever 130, so as to ensure the maximum extending length of the first sliding seat 210, so as to avoid the situation that the first sliding seat 210 is separated from the second cantilever 130, thereby improving the reliability of the cantilever mechanism in use.

In some embodiments of the present utility model, the first limiting structure includes a first limiting portion 132 disposed on the second cantilever 130 and a second limiting portion 212 disposed on the first sliding seat 210, where the first limiting portion 132 abuts against the second limiting portion 212 when the telescopic assembly 200 is in the extended state, so as to ensure the maximum extension length of the first sliding seat 210, so as to avoid the situation that the first sliding seat 210 is separated from the second cantilever 130, thereby improving the reliability of the cantilever mechanism in use.

Specifically, the first limiting portion 132 is disposed at an end of the second cantilever 130 away from the lifting rod set 120, the second limiting portion 212 is disposed at an end of the first slider 210 near the lifting rod set 120, and when the telescopic assembly 200 is switched to an extended state, the first limiting portion 132 abuts against the second limiting portion 212 to limit the first slider 210 to move continuously along a direction extending out of the second cantilever 130, so that a maximum extending length of the first slider 210 can be ensured, and a situation that the first slider 210 is separated from the second cantilever 130 is avoided, thereby improving the reliability of the cantilever mechanism.

It is appreciated that when the telescopic assembly 200 is in the contracted state, the first limiting portion 132 is separated from the second limiting portion 212, which will not be described in detail herein.

It should be noted that, the first limiting structure may also be a structure in which a limiting shaft is matched with a limiting hole, the limiting hole is formed in the second cantilever 130, the limiting hole is in a waist-shaped structure, the limiting shaft is disposed in the first sliding seat 210, the limiting shaft penetrates through the limiting hole and can be abutted to one side, far away from the lifting rod set 120, of the limiting hole, and the first sliding seat 210 can also be limited to move continuously along a direction extending out of the second cantilever 130, which is not described in detail herein.

In some embodiments of the present utility model, a second limiting structure is disposed between the first slider 210 and the second slider 220, where the second limiting structure is used to limit the length of the second slider 220 extending out of the first slider 210, so as to ensure the maximum extending length of the second slider 220, so as to avoid the situation that the first slider 210 is separated from the second slider 220, and thus improve the reliability of the cantilever mechanism.

Specifically, the first limiting structure includes a third limiting portion 214 disposed on the first sliding base 210 and a fourth limiting portion 221 disposed on the second sliding base 220, where the third limiting portion 214 is disposed at an end of the first sliding base 210 away from the lifting rod set 120, and the fourth limiting portion 221 is disposed at an end of the second sliding base 220 close to the lifting rod set 120, where the third limiting portion 214 abuts against the fourth limiting portion 221 when the telescopic assembly 200 is in an extended state, so as to limit the first sliding base 210 to move continuously along a direction extending out of the second cantilever 130, so that a maximum extending length of the second sliding base 220 can be ensured, and a situation that the first sliding base 210 is separated from the second sliding base 220 is avoided, thereby improving the reliability of the cantilever mechanism.

It is understood that the third limiting portion 214 is separated from the fourth limiting portion 221 when the telescopic assembly 200 is in the contracted state, which will not be described in detail herein.

Referring to fig. 5, in some embodiments of the present utility model, a first guiding structure is disposed between the first sliding base 210 and the second cantilever 130, so as to guide the first sliding base 210, so that the first sliding base 210 moves along a preset direction, and the movement stability of the first sliding base 210 can be improved.

In some embodiments of the present utility model, the first guiding structure includes a first guiding strip 213 disposed on the first sliding base 210 and a first guiding groove 133 disposed on the second cantilever 130, where the first guiding strip 213 is accommodated in the first guiding groove 133, so as to guide the first sliding base 210, so that the first sliding base 210 moves along a preset direction, and the movement stability of the first sliding base 210 can be improved.

Specifically, the first guide strip 213 is accommodated in the first guide groove 133, and the first guide strip 213 can be connected with a side wall of the first guide groove 133, so that the first slide 210 can be guided, so that the first slide 210 moves along a preset direction, and the movement stability of the first slide 210 can be improved.

It should be noted that, the first guiding structure may also be a structure in which a guiding shaft is matched with a guiding hole, the guiding hole is provided on the second cantilever 130, the guiding hole is in a waist-shaped structure, the guiding shaft is provided on the first sliding seat 210, the guiding shaft penetrates through the guiding hole and is connected with a side wall of the guiding hole, and the guiding of the first sliding seat 210 is also possible.

Referring to fig. 5, in some embodiments of the present utility model, a second guiding structure is disposed between the first slider 210 and the second slider 220, so as to guide the second slider 220, so that the second slider 220 moves along a preset direction, and the movement stability of the second slider 220 can be improved.

Specifically, the second guiding structure includes a second guiding strip 222 disposed on the second sliding base 220 and a second guiding slot 215 disposed on the first sliding base 210, where the second guiding strip 222 is accommodated in the second guiding slot 215, so as to guide the second sliding base 220, so that the first sliding base 210 moves along a preset direction, and the movement stability of the first sliding base 210 can be improved.

Referring to fig. 1 and 2, a bridge inspection apparatus according to a second aspect of the present utility model includes a bridge inspection vehicle and a cantilever mechanism according to a first aspect of the present utility model, where the bridge inspection vehicle is connected to the cantilever assembly, and when inspecting a bridge by providing a telescopic assembly 200 and a first transmission structure, the distance between the first visual inspection assembly 310 and the second visual inspection assembly 320 can be increased or decreased along with the synchronous sliding of the first sliding seat 210 and the second sliding seat 220, so that the first visual inspection assembly 310 and the second visual inspection assembly 320 can simultaneously inspect different positions of the bridge in the width direction, and the inspection efficiency of the bridge inspection apparatus can be improved.

Specifically, when the bridge is detected, the telescopic assembly 200 is in a shortened state, the first driving assembly 500 may be started, so that the first driving assembly 500 may drive the first sliding seat 210 to slide relative to the cantilever assembly, since the first gear 430 is meshed with the first rack 410 and the first gear 430 is meshed with the second rack 420, when the first sliding seat 210 slides relative to the cantilever assembly, the first rack 410 may drive the first gear 430 to rotate, so that the first gear 430 may drive the second rack 420 to move, thereby driving the second sliding seat 220 to slide, and thus, the first sliding seat 210 and the second sliding seat 220 may slide synchronously, the telescopic assembly 200 is switched from the shortened state to the extended state, the distance between the first visual detection assembly 310 and the second visual detection assembly 320 may be increased, so that the first visual detection assembly 310 and the second visual detection assembly 320 may detect different positions of the bridge in the width direction at the same time, and after the detection, the first driving assembly 500 may drive the first sliding seat 210 to move in the opposite direction, so that the telescopic assembly 200 may be switched from the extended state to the shortened state, so that the distance between the first visual detection assembly 310 and the second visual detection assembly 320 may be reduced, i.e. the bridge detection device may be improved.

It should be noted that the first visual detection component 310 and the second visual detection component 320 may be components such as a camera or a video camera, which are not limited herein.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.

Claims (10)

1. A cantilever mechanism, comprising:

the cantilever assembly is used for being connected with the bridge detection vehicle;

-a telescopic assembly (200) having an extended state and a shortened state, the telescopic assembly (200) comprising a first slider (210) and a second slider (220), the first slider (210) being slidably arranged to the cantilever assembly, the second slider (220) being slidably arranged to the first slider (210);

a first vision inspection assembly (310) disposed on the first carriage (210);

a second vision inspection unit (320) provided on the second carriage (220);

the first transmission structure comprises a first rack (410), a second rack (420) and a first gear (430), wherein the first rack (410) is arranged on the cantilever assembly, the second rack (420) is arranged on the second sliding seat (220), the first gear (430) is rotatably arranged on the first sliding seat (210), the first rack (410) and the second rack (420) are oppositely arranged, and the first gear (430) is respectively meshed with the first rack (410) and the second rack (420);

the first driving assembly (500) is arranged on the cantilever assembly, the output end of the first driving assembly (500) is connected with the first sliding seat (210), and through the first transmission structure, the first driving assembly (500) can drive the first sliding seat (210) and the second sliding seat (220) to synchronously slide, so that the telescopic assembly (200) is switched between the extension state and the shortening state.

2. The cantilever mechanism according to claim 1, wherein the cantilever assembly comprises a first cantilever (110), a lifting rod set (120) and a second cantilever (130), the fixed end of the lifting rod set (120) is connected with the first cantilever (110), the movable end of the lifting rod set (120) is connected with the second cantilever (130), the first cantilever (110) is used for being connected with the bridge inspection vehicle, and the first sliding seat (210) is slidingly connected with the second cantilever (130).

3. Cantilever mechanism according to claim 2, characterized in that a first damping assembly is provided between the first carriage (210) and the second cantilever (130), the first damping assembly being adapted to overcome the inertia of the movement of the first carriage (210).

4. A cantilever mechanism according to claim 3, wherein the first damping assembly comprises a first friction member (610) provided to the second cantilever (130) and a second friction member (620) provided to the first carriage (210), the first friction member (610) being in sliding connection with the second friction member (620).

5. The cantilever mechanism according to claim 4, wherein a first elastic member (630) is provided between the first friction member (610) and the second cantilever (130), the first elastic member (630) being configured to move the first friction member (610) in a direction approaching the second friction member (620).

6. The cantilever mechanism according to claim 2, wherein a first limiting structure is provided between the first slider (210) and the second cantilever (130), the first limiting structure being configured to limit the length of the first slider (210) extending out of the second cantilever (130).

7. The cantilever mechanism according to claim 6, wherein the first limiting structure comprises a first limiting portion (132) provided on the second cantilever (130) and a second limiting portion (212) provided on the first slider (210), and wherein the first limiting portion (132) abuts against the second limiting portion (212) when the telescopic assembly (200) is in the extended state.

8. Cantilever mechanism according to claim 2, characterized in that a first guiding structure is provided between the first slider (210) and the second cantilever (130).

9. The cantilever mechanism according to claim 8, wherein the first guiding structure comprises a first guiding strip (213) provided on the first slider (210) and a first guiding groove (133) provided on the second cantilever (130), the first guiding strip (213) being accommodated in the first guiding groove (133).

10. A bridge inspection apparatus comprising a bridge inspection vehicle and a cantilever mechanism according to any one of claims 1 to 9, wherein the bridge inspection vehicle is connected to the cantilever assembly.