CN212763474U - Cable trench inspection robot - Google Patents

Abstract

The utility model belongs to the technical field of the cable is patrolled and examined, concretely relates to cable pit patrols and examines robot. The cable trench inspection robot comprises a base unfolding system and a camera lifting system arranged on the base unfolding system; the base unfolding system comprises a bottom plate, a linear action unit, a cantilever plate, a walking assembly and a jacking assembly; the camera lifting system comprises a stroke block, a four-link imitation assembly, a supporting rod and a camera shooting assembly. The utility model discloses the wall operation is realized wearing by the accessible cable pit to avoid because of a great deal of use problem that the existence of preventing the hot wall leads to, and then can the predetermined task of patrolling and examining of efficient completion.

Description

Cable trench inspection robot

Technical Field

The utility model belongs to the technical field of the cable is patrolled and examined, concretely relates to cable pit patrols and examines robot.

Background

The occurrence of cable tunnel fires is a gradual cumulative process. With the increase of time, the local temperature of the cable gradually rises due to the aging of the insulating layer, the accumulation of dust and oil, the loosening of the intermediate joint and the like, so that a fire disaster is caused. Before the accident happens, if the conditions such as temperature, smoke and the like in the cable tunnel can be effectively monitored in real time, the fire disaster can be prevented in the bud. Although the monitoring problem of cable tunnels has been attracting attention, no reasonable solution has been found.

The traditional cable tunnel adopts a manual inspection mode. At regular intervals, patrolling personnel enter the tunnel and manually check the temperature condition of the cable intermediate joint by using a temperature measuring instrument. This method wastes a lot of manpower. Meanwhile, due to the limitation of a manual mode, each intermediate joint is difficult to detect every time, only the position where the temperature rises quickly can be checked, the trouble can not be prevented in the bud, and the real prevention effect cannot be achieved.

Later, a thermal sensing wire is adopted to match with a monitoring system to perform online monitoring on a cable, specifically, a thermal sensing wire is closely attached to the cable in the cable arrangement direction to extend, so as to perform high-temperature point detection. However, the thermal wire has drawbacks in that: first, the cables located at two sides in the cable tunnel are bundled and arranged in bundles, the thermal sensing wires can only monitor the high temperature change of the adjacent cables which are closely attached, and the monitoring effect of the temperature change of the cable located at the farthest end is very poor. Secondly, when the thermal sensing wires are arranged, the thermal sensing wires have certain rigidity and elasticity, so the thermal sensing wires are often wavy and are difficult to cling to the cable, and even the cable close to the thermal sensing wires is often provided with monitoring holes due to the non-uniformity of gaps between the thermal sensing wire bodies and the cable.

Still later, tunnel inspection robots began to become popular. The concrete mechanism of robot is patrolled and examined in the invention patent application that the name of bulletin number "CN 107046252A" is "a cable channel intelligence patrols and examines robot" and the utility model patent application that the name of bulletin number "CN 207691316U" is "a cable channel robot patrols and examines system" all describe to some extent, and the major structure is: including the body and supply the track that the body removed, the track install in the both sides of body downside provide the power by the battery, are provided with control system and control cloud platform on the body, control system include main control unit and with main control unit intercommunication connection's transmission communication antenna, control cloud platform include with main control unit intercommunication connection's high definition camera and thermal imager. The functions are as follows: transmitting working state pictures of cables in the tunnel, temperature and humidity in the tunnel, surface temperature of the power cables and other parameters to technicians outside the tunnel in real time through a wireless network; when the state parameters are abnormal, technicians outside the tunnel can determine that potential safety hazards exist in the power cable at the position where the robot is located, and therefore the technicians can be organized to maintain the corresponding positions. The tunnel inspection robot has excellent use effect, but the following problems which cannot be solved are still existed: on one hand, when cables are assembled in the cable tunnel, a thick and heavy firewall is poured in the cable tunnel at intervals of specified length in consideration of the fire condition, so that the cable tunnel is isolated into individual tunnel units to achieve the purpose of physical isolation in the case of fire. The existence of the firewall ensures that the flow of taking out the tunnel inspection robot from the previous tunnel unit, resetting the cover plate on the previous tunnel unit, removing the cover plate of a new tunnel unit and putting the new tunnel inspection robot into the tunnel inspection robot is continuously repeated when the tunnel inspection robot inspects the tunnel each time, the operation is extremely complicated, the physical labor is huge, and the actual inspection efficiency is obviously severely restricted. On the other hand, the cables in the cable tunnel are arranged in a bundle, so that a certain height exists, the inspection height of the traditional tunnel inspection robot is constant, certain cable dead corners cannot be inspected inevitably, inspection holes are caused, and potential safety hazards exist.

Disclosure of Invention

The utility model aims at overcoming the not enough of above-mentioned prior art, provide a rational in infrastructure and practical cable pit and patrol and examine robot, this cable pit is patrolled and examined robot accessible cable pit and is realized wearing the wall operation to avoid because of a great deal of service problems that the existence of preventing the wall leads to, and then can the efficient completion predetermined task of patrolling and examining.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a cable pit patrols and examines robot which characterized in that: this robot is patrolled and examined to cable pit includes that the base expandes the system and arranges the camera operating system on the base expandes the system, wherein:

the base unfolding system comprises a bottom plate and two groups of linear action units arranged on the bottom plate in parallel, wherein each group of linear action units comprises two groups of moving blocks capable of moving towards and away from each other along the length direction of the bottom plate under the driving of a power source; the moving block is hinged with the fixed end of the cantilever plate through a first vertical hinged shaft, the cantilever end of the cantilever plate is hinged with the walking part through a second vertical hinged shaft, and the walking parts positioned on the same side of the bottom plate are fixedly connected with each other to form a group of walking components; the cantilever plate is also provided with a vertical convex column, the arrangement position of the vertical convex column is spaced from the arrangement position of the first vertical hinged shaft, the upper plate surface of the bottom plate is concavely provided with a guide chute, an included angle is formed between the length direction of the guide chute and the motion path of the moving block, and the angle tip of the included angle points to the advancing direction of the moving block when the moving block performs the separation motion; the base unfolding system also comprises a jacking component for jacking the walking component from the cable trench to a height higher than or equal to the ground height of the cable tunnel;

the camera lifting system comprises a stroke block which is arranged on the top plate and can perform reciprocating linear displacement motion along the length direction of the cable trench; the camera upgrading system further comprises a four-bar-simulated connecting rod assembly, wherein the bottom end of a first rocker of the four-bar-simulated connecting rod assembly extends downwards and is in hinged fit with the stroke block; the bottom end of the first connecting rod is fixedly connected with the end part of the top plate behind the stroke block, and the top end of the first connecting rod extends forwards and is in hinged fit with the bottom end of the supporting rod; the top end of the first rocker is hinged with a first sliding sleeve, and a first sliding sleeve sliding rail is matched with the first connecting rod; the tail end of the second connecting rod is hinged to the middle section of the rod body of the first rocker, the top end of the second connecting rod is hinged to the bottom end of the second rocker, the top end of the second rocker is hinged to a second sliding sleeve, a sliding rail of the second sliding sleeve is matched with the supporting rod, and the axes of the hinged parts are horizontally arranged and are parallel to each other; the top end of the supporting rod is fixedly connected with a camera shooting assembly.

Preferably, the power source is a power motor, and an output shaft of the power source is in power connection with a bidirectional screw rod; and a group of moving blocks are in threaded fit on the two groups of threaded sections of each group of bidirectional screw rods, so that the two groups of moving blocks and the group of bidirectional screw rods are matched together to form a group of linear action units.

Preferably, the base unfolding system further comprises a top plate parallel to the bottom plate in a plate surface manner and arranged above the bottom plate; the moving block is in a square block shape, the cantilever plate comprises an upper suspension plate and a lower suspension plate, and the upper suspension plate and the lower suspension plate extend horizontally and are hinged to the top end face and the bottom end face of the moving block in a split mode; the top plate is also provided with a guide sliding chute, the vertical convex column at the upper suspension plate vertically extends upwards to form a guide matching relationship with the guide sliding chute at the top plate, and the vertical convex column at the lower suspension plate vertically extends downwards to form a guide matching relationship with the guide sliding chute at the bottom plate; and a reinforcing plate with a structure reinforcing function is arranged between the upper suspension plate and the lower suspension plate.

Preferably, the top plate, the bottom plate, the moving block, the cantilever plate and the walking assembly are matched together to form a base; the front end and the rear end of the base are respectively provided with a sensing part for controlling the advancing direction of the base; the sensing ends of the two groups of sensing parts positioned at the same end of the base are horizontally arranged and respectively point to the directions of two side walls of the cable tunnel; the walking assembly is a crawler wheel.

Preferably, the two sets of cantilever plates at the same end of the bottom plate are arranged with synchronous gears synchronously engaged with each other.

Preferably, the jacking assembly comprises a jacking block; the front end of the top block is hinged and fixed at the bottom end of a first swing rod through a first horizontal hinged shaft, and the top end of the first swing rod is hinged and fixed at the front end of the bottom plate through a second horizontal hinged shaft; the rear end of the top block is hinged to the bottom end of a second swing rod through a third horizontal hinged shaft, and the top end of the second swing rod is in power connection with an output shaft of a swing arm motor located at the tail end of the bottom plate.

Preferably, the top blocks are two groups of straight rod-shaped top blocks, and the two groups of top blocks are fixedly connected with each other through a transverse pull rod so as to form a horizontal square frame structure.

Preferably, the linear displacement unit comprises a displacement motor and a displacement screw rod coaxially and fixedly connected to an output shaft of the displacement motor, and the stroke block is in threaded fit with the displacement screw rod; the displacement motor is positioned at the rear part of the top plate, an extension frame extends outwards from the rear part of the top plate along the length direction of the base, and a hinge seat is arranged on the extension frame so as to be hinged with the bottom end of the first connecting rod; the hinge point height of the bottom end of the first connecting rod is higher than that of the hinge point of the bottom end of the first rocker.

Preferably, a supporting block for supporting the supporting rod is arranged at the position, close to the bottom end, of the rod body of the first connecting rod, and a placing groove for placing the supporting rod conveniently is formed in the supporting block in a concave mode.

Preferably, the camera shooting assembly comprises a camera shooting seat and a rotating block horizontally hinged to the camera shooting seat, a first torsion motor is arranged on the rotating block, and an output shaft of the first torsion motor vertically extends upwards and is fixedly connected with the camera so as to drive the camera to rotate; the rotating block is driven by a second torsion motor arranged on the camera seat to generate pitching motion.

The beneficial effects of the utility model reside in that:

1) due to the fire condition, a thick and heavy firewall is arranged in the cable tunnel at intervals of specified length, so that the cable tunnel is isolated into tunnel units one by one to achieve the purpose of physical isolation in the case of fire; however, in consideration of the drainage problem, a drainage ditch is formed at the center line of the ground of the cable tunnel, and the drainage ditch penetrates through the firewall so as to drain water.

On the basis of above-mentioned current situation, the utility model discloses consider to design a cable pit and patrol and examine robot, make the controllable function of the lifting height that can realize the camera of one of them aspect to can carry out the field adjustment of pertinence to the pencil height of difference, in order to ensure to tie up the multi-angle multiposition scanning shooting purpose of the cable of arranging to the bundling, finally ensure the monitoring effect. On the other hand, on the premise of meeting the basic requirements, the minimum of the volume after storage can be synchronously ensured, so that the foundation guarantee is provided for the subsequent wall penetrating operation of the cable tunnel inspection robot.

More specifically, the utility model discloses an aspect provides drive power through the power supply on the bottom plate to the straight line action unit is as the action source, and with the direction spout as the guide part to when the movable block produces adjacent and the action of leaving mutually, can force the running gear who is located the bottom plate homonymy to produce the laminating and the extension action of relative bottom plate. On the other hand, the utility model discloses use the roof as the carrier, do the driving source with the linear displacement unit on the roof to form the imitative four-bar linkage subassembly of parallel double crank formula with first rocker, first connecting rod, second rocker and second connecting rod jointly, settle the bracing piece that has the subassembly of making a video recording on this imitative four-bar linkage subassembly again. Like this, the laminating and the extension action of above-mentioned walking subassembly, cooperation jacking subassembly make and be located the utility model discloses can realize shooing the cable conductor at cable tunnel ground walking and walk in order to pass the dual action function of preventing hot wall in the cable pit. Meanwhile, the top plate with the linear displacement unit, the imitated four-link assembly with the parallel double-crank function and the support rod with the camera component form a three-dimensional support system from bottom to top, and the storage function of the system is finally realized under the actions of the imitated four-link assembly and the corresponding sliding sleeve. When needed, the stroke block acts through the action of the driving source, namely the linear displacement unit, so that the imitated four-bar linkage assembly is supported, and the height adjustable function of the camera shooting assembly is ensured; when accomodating, the stroke piece return stroke drives imitative four-bar linkage assembly and lies prone down for the subassembly of making a video recording descends and finally reaches the volume minimizing purpose, and its work is very reliable stable.

Therefore, the utility model discloses the accessible cable pit realizes the wall-penetrating operation to avoid because of preventing a great deal of use problem that the existence of hot wall leads to, and then can the predetermined task of patrolling and examining of efficient completion.

2) For the power source and the linear motion unit, linear motion of the moving block can be realized by driving a gear rack to move by a motor, a guide motion function of the moving block can be ensured by a crank-slider structure, and even a motion effect can be ensured by a mode that a cylinder drives the moving block on a guide rail. Consider the compactification and the smallness of volume, the utility model discloses the preferred mode that adopts power motor collocation two-way lead screw to with movable block screw-thread fit on two-way lead screw, with the compact assembly function who realizes "two one-pole", finally can make entire system can be in the narrow and small cable pit of indentation and accurate reliable prevent hot wall through.

3) When the cantilever plate is actually used, the single-bottom-plate structure can preliminarily ensure the stability of the stretching action of the cantilever plate; for the stability of further promotion above-mentioned, the utility model discloses a double plate body structure, also the bottom plate joins in marriage the roof and form the splint structure to press from both sides cantilever plate and movable block between two plate bodies, and the precision nature of direction action is all guaranteed through two direction spouts to every group movable block. By the structure, the reliability of the extending and retracting actions of the cantilever plate can be obviously improved.

4) The reinforcing plate is favorable for further improving the structural rigidity of the single cantilever plate, so that the better supporting frame can be arranged on the camera. The walking component can be in a roller structure, and can also be other existing other similar mechanisms capable of walking on the ground. The utility model discloses the preferred athey wheel that adopts is as walking assembly to promote its practicality, thereby the interior complicated operating mode of satisfying of cable tunnel of maximize uses.

5) The jacking assembly can jack the walking assembly when necessary, so that the walking assembly is lifted to the height of the ground of the cable tunnel or higher than the ground height of the cable tunnel, the subsequent unfolding and walking operation is facilitated, and the walking assembly can be naturally placed on the ground of the cable tunnel after the system is unfolded. The utility model discloses it forms imitative four-bar linkage to prefer to adopt bottom plate, first pendulum rod, kicking block and second pendulum rod end to end linking, uses the second pendulum rod as the drive lever again to realize whole imitative four-bar linkage's action effect. Once the four-bar linkage mechanism is imitated to generate action, the top block can generate approaching and separating actions relative to the bottom plate, and the walking assembly can be driven to generate lifting action. And for the support stability who promotes the kicking block, the kicking block can directly make with the flat board, also can be as the mode of the horizontal pull rod of two sets of kicking block cooperation of adoption to guarantee the cooperation adaptability to rugged and uneven cable pit with frame mechanism.

6) For the linear displacement unit, linear motion of moving the stroke block can be realized by driving a gear rack to move by a motor, a guide motion function of the stroke block can be ensured by a crank-slider structure, and even motion effect can be ensured by a mode of driving the stroke block on a guide rail by an air cylinder. Consider the compactness and the small and exquisite of the reliability and the volume of work, the utility model discloses the preferred mode that adopts displacement motor collocation displacement lead screw to the reciprocating motion function of stroke piece has been guaranteed. First connecting rod bottom end pin joint height is higher than the bottom pin joint height of first rocker, and this makes whole mechanism lie prone down when contracting, can laminate completely draw in on the base, and the minimizing of volume can be effectively guaranteed.

7) The arrangement of the supporting block and the placing groove is to consider that the supporting rod is completely hinged on the top end of the first connecting rod by self rigidity, and the straightening performance of the rod body is ensured by the supporting action of the second rocker. And when whole mechanism was bent over and is retracted, the bracing piece was because the top has born the weight of the subassembly of making a video recording, consequently directly falls or probably damages the subassembly of making a video recording, perhaps leads to the bracing piece pole body impaired because of the striking. The utility model arranges the supporting blocks, so that the supporting rods can just fall into the placing grooves of the supporting blocks when falling, thereby ensuring the reliable protection effect of the supporting rods and the camera module on one hand; on the other hand, the placing reliability of the supporting rod when the whole structure is in a volume minimized state is also ensured, so that the situation that the subsequent normal work is influenced by the position deflection caused by the jolt of the cable trench road surface and the like is avoided, and multiple purposes are achieved.

8) And after the camera shooting assembly is jacked to a preset height, the camera can generate pitching motion through the driving of the second torsion motor, so that the camera can be ensured to always observe the cable in real time in a horizontal state. Meanwhile, the camera can also generate rotation action through the first torsion motor so as to realize the aim of multi-angle observation at a fixed point, and the observation accuracy and reliability can be obviously improved.

Drawings

Fig. 1 and fig. 2 are schematic perspective views of the present invention in a traveling posture;

fig. 3 and 4 are schematic perspective views of the present invention in the unfolded position;

FIGS. 5 and 6 are schematic perspective views of the base deployment system in a deployed position;

FIG. 7 is a schematic perspective view of the jacking assembly;

FIG. 8 is a schematic perspective view of the deployment system in the advanced position;

FIG. 9 is a schematic perspective view of the base deployment system in a deployed position;

FIG. 10 is a schematic perspective view of the structure shown in FIG. 9 with the running assembly removed;

FIG. 11 is an exploded view of the structure of FIG. 10;

FIG. 12 is an enlarged view of a portion I of FIG. 11;

FIG. 13 is a deployed attitude view of the camera lift system;

fig. 14 and 16 are perspective views of the camera lift system in a travel position;

fig. 15 and 17 are perspective views of the camera raising and lowering system in the extended position.

The utility model discloses each reference numeral is as follows with the actual corresponding relation of part name:

11-bottom plate 12-power source 13-moving block 14-cantilever plate

14 a-upper suspension plate 14 b-lower suspension plate 14 c-reinforcing plate 14 d-vertical convex column

15-walking assembly 16-jacking assembly

16 a-a top block 16 b-a first swing link 16 c-a second swing link

16 d-swing arm motor 16 e-transverse pull rod

17-bidirectional screw rod 18-top plate 19-guide sliding groove

21-stroke block 22-imitated four-connecting-rod assembly

22 a-first rocker 22 b-first connecting rod 22 c-first sliding sleeve

22 d-second connecting rod 22 e-second rocker 22 f-second sliding sleeve

23-support bar 24-camera assembly

24 a-camera seat 24 b-rotating block 24 c-camera 24 d-second torsion motor

25-displacement screw rod 26-displacement motor

30-sensing part 40-extending frame 50-supporting block 51-placing groove 60-synchronizing gear

Detailed Description

To facilitate an overall understanding, the structure and operation of a particular embodiment of the entire cable trench inspection robot is described herein as follows:

the cable pit patrols and examines robot, promptly the utility model discloses, as shown in fig. 1-17, its major part includes that the base expandes the system and arranges the camera operating system on the base expandes the system. Wherein:

first, base deployment system

The base deployment system, as shown in fig. 1-12, includes a deployment assembly for causing the traveling assembly 15 to extend so as to travel at the cable tunnel ground in a traveling attitude, and causing the traveling assembly 15 to return to a traveling state so as to retract the width of the trench, and a jacking assembly 16 for causing the entire system to rise above the trench and fall so as to retract into the trench.

As shown in fig. 9 to 12, the unfolding assembly includes a set of top plates 18, a set of bottom plates 11, a set of driving motors, i.e., power sources 12, two sets of bidirectional screw rods 17, four sets of moving blocks 13, and four cantilever plates 14. During actual assembly, the top plate 18 and the bottom plate 11 are both rectangular plate-shaped, the plate surfaces of the top plate 18 and the bottom plate 11 are horizontally arranged, and a gap between the top plate 18 and the bottom plate 11 forms an installation space for the driving motor, the bidirectional screw rod 17, the moving block 13 and the cantilever plate 14. The two groups of bidirectional screw rods 17 are arranged in parallel and parallel to the plate length direction of the bottom plate 11, and the same ends of the two groups of bidirectional screw rods 17 are in power connection or in gear engagement with the same group of driving motors. After the moving block 13 is matched with the thread section of the bidirectional screw rod 17, the fixed end of the cantilever plate 14 is hinged through a first vertical hinge shaft, and the cantilever end of the cantilever plate 14 is hinged to the walking part through a second vertical hinge shaft. In fig. 8-9, the traveling assembly 15 is a track wheel, and the cantilever end of the cantilever plate 14 is directly hinged to a fixed block on the track wheel. Because of the length of the track wheels, the two sets of cantilever shoes 14 located on the same side of the base plate 11 can be matched with one set of track wheels together to ensure the stability and accuracy of the system during traveling.

As shown in fig. 10 to 11, the cantilever plate 14 includes an upper suspension plate 14a and a lower suspension plate 14b arranged in parallel with each other, and a reinforcing plate 14c for structural reinforcement arranged between the upper suspension plate 14a and the lower suspension plate 14 b. The upper suspension plate 14a and the lower suspension plate 14b extend horizontally and are hinged to the top end face and the bottom end face of the moving block 13, guide sliding grooves 19 are formed in the upper plate face of the bottom plate 11 and the lower plate face of the top plate 18, the vertical convex column 14d at the upper suspension plate 14a extends vertically upwards as shown in fig. 12, so that a guide matching relation is formed between the vertical convex column 14d and the guide sliding grooves 19 at the top plate 18, and the vertical convex column 14d at the lower suspension plate 14b extends vertically downwards so that a guide matching relation is formed between the vertical convex column 14d and the guide sliding grooves 19 at the bottom plate 11. Thus, when the driving motor acts to drive the bidirectional screw rod 17 to rotate, and further the moving block 13 generates a reciprocating displacement motion along the threaded section of the bidirectional screw rod 17, the moving block 13 drives the cantilever plate 14 to generate a transverse swinging motion. Because the cantilever plate 14 and the crawler wheel form an integral structure due to the hinged shafts, at this time, under the linear action of the moving block 13, the cantilever plate 14 follows up, and the crawler wheel can be driven to perform the inward contraction and outward expansion actions at this time. Of course, in order to ensure the action accuracy and synchronism of the cantilever plates 14 located at both sides of the base plate 11, as shown in fig. 11-12, a synchronizing gear 60a may be disposed on the upper suspension plate 14a at the same end of the base plate 11, so that the function of synchronizing the action of the cantilever plates 14 at the same end of the base plate 11 is realized by virtue of the meshing property of the synchronizing gear 60 a.

As shown in fig. 6-7, the jacking assembly 16 includes a four-bar mechanism formed by joining the bottom plate 11, the first swing link 16b, the jacking block 16a and the second swing link 16c end to end, and the second swing link 16c is in power fit with an output shaft of the swing arm motor 16d to form a driving rod, so as to achieve the action effect of the whole four-bar mechanism. Once the four-bar mechanism is actuated, the top block 16a can be actuated to move toward and away from the bottom plate 11, and the walking assembly 15 can be actuated to move up and down. And for promoting the support stability of kicking block 16a, kicking block 16a can directly make with the flat board, also can be like the utility model the mode that adopts two sets of kicking blocks 16a cooperation transverse pull rod 16 e. The two sets of top blocks 16a shown in fig. 7 and the transversal pull rod 16e can form a square frame-like structure, obviously having lower requirements on the flatness of the contact surface, and being especially suitable for being used in rugged cable trench environment.

Can see in as fig. 1-4, sensing portion 30's the directional both sides wall in cable tunnel of response face to rely on sensing portion 30's response face to guarantee that the base equals all the time along the distance of cable tunnel apart from both sides wall when marcing, finally reaches the assurance the utility model discloses automatic centering when marcing along cable tunnel direction purpose, here is just no longer repeated for many.

Second, camera lifting system

The specific structure of the camera lifting system is shown in fig. 1-5 and fig. 13-17, and comprises a linear displacement assembly, a pseudo-four-bar linkage assembly 22 and a camera assembly 24 which are sequentially arranged from bottom to top. The design of the camera lift system aims at achieving minimal folding in length and even overall volume while ensuring operation. Wherein:

the shape of the linear displacement assembly is shown in fig. 13, and includes a displacement screw 25 disposed at the upper plate surface of the top plate 18 and extending along the length direction of the upper plate surface of the top plate 18, and a displacement motor 26 is disposed at the tail end of the displacement screw 25 for performing a driving function. The displacement screw rod 25 is in threaded fit with the stroke block 21, so that the displacement screw rod 25 is driven to rotate through the driving motor, and the aim of directional reciprocating movement of the stroke block 21 is further fulfilled. As can be seen in fig. 13-14, an extension bracket 40 is also disposed behind the displacement motor 26, in order to cooperate with the top plate 18 at the base to support the pseudo-four-bar linkage assembly 22.

In fig. 13-17, the pseudo-four-bar linkage assembly 22 includes a first rocker 22a, a second rocker 22e, a first link 22b, and a second link 22 d. Imitating the four-bar linkage assembly 22, as the name implies, it is similar to a planar four-bar linkage in structure, but as shown in fig. 13, some of the bar hinges are slidable with respect to the other bar shafts, so as to realize the retractable and extendable functions of the whole camera lifting system. More specifically: the bottom end of the first rocker 22a is horizontally hinged with the stroke block 21, and the top end is sleeved at the rod body of the first connecting rod 22b through a first sliding sleeve 22 c; the bottom end of the first connecting rod 22b is horizontally hinged on the extending frame 40, and the top end is horizontally hinged at the bottom end of the supporting rod 23; the bottom end of the second connecting rod 22d is horizontally hinged at the rod body of the first rocker 22a, and the top end is horizontally hinged at the bottom end of the second rocker 22 e; the top end of the second rocker 22e is sleeved at the shaft of the support rod 23 through a second sliding sleeve 22 f; the axes of the hinges are parallel to each other. Thus, when the stroke block 21 performs a retreating motion along the displacement screw 25, i.e., a rightward motion as shown in fig. 13, the first rocker 22a performs a jacking motion, so as to push the first link 22b to lift; meanwhile, the second connecting rod 22d and the second rocking rod 22e generate a linked pseudo-four-bar linkage action, and finally the supporting rod 23 is pushed to perform a vertical action at the moment. At this time, as shown in fig. 13, 15 and 17, the rod bodies form a parallel double-crank structure with the same length as the rod pair at the matching position. When the stroke block 21 moves forward along the displacement screw 25, correspondingly, the first rocker 22a generates a falling motion, so as to drive the first connecting rod 22b, the second connecting rod 22d and the second rocker 22e to generate a follow-up motion, and finally the supporting rod 23 bends over downwards. When the supporting rod 23 is located at the lowest position, the supporting rod is stably placed on the placing groove 51 of the supporting block 50 at the first link 22b just because the height of the bottom hinge point of the first link 22b is higher than that of the bottom hinge point of the first rocking bar 22a, so as to ensure the placing stability.

For the camera assembly 24, after the camera assembly 24 is lifted to a predetermined height, the camera 24c can generate a pitching motion by driving the second torque motor 24d, so as to ensure that the camera 24c can always perform real-time cable observation in a horizontal state. Meanwhile, the camera 24c can also drive the rotating block 24b to act through the first torque motor so as to generate a rotating action, so that the fixed-point multi-angle observation purpose is realized, and the observation accuracy and reliability can be obviously improved.

For further understanding of the present invention, the working process of the embodiments of the present invention will be further described herein with reference to the accompanying fig. 1-6:

cable pit patrol and examine two kinds of forms of expansion gesture when robot possesses normal gesture of marcing and needs to adapt to different work condition and use, wherein:

1) and a traveling posture

When the cable trench inspection robot is in a moving posture, as shown in fig. 1-2, the displacement motor 26 at the camera lifting system rotates at the moment to drive the stroke block 21 to move forward along the displacement screw rod 25, and the first rocker 22a generates a lodging action at the moment, so that the first connecting rod 22b, the second connecting rod 22d and the second rocker 22e are driven to generate a follow-up action, and finally the supporting rod 23 is made to lie prone downwards. When the supporting rod 23 is located at the lowest position, it is just because the bottom hinge point of the first link 22b is higher than the bottom hinge point of the first rocker 22a, and is stably placed on the placing groove 51 of the supporting block 50 at the first link 22 b. Meanwhile, the jacking assembly 16 is in a furled state and clings to the lower plate surface of the bottom plate 11 at the base, the unfolding assembly moves due to the rotation of the driving motor, and the cantilever plate 14 drives the two sets of crawler wheels to move oppositely until the two sets of crawler wheels cling to the side part of the base as shown in fig. 1-2, so that furled action is completed. At the moment, the action posture of the cable trench inspection robot is shown in the figure 1-2, the width of the cable trench inspection robot is smaller than that of the cable trench, and the height of the cable trench inspection robot is smaller than that of an opening at a firewall; the cable trench inspection robot can be integrally placed in the cable trench and can directly penetrate through the firewall along the opening at the firewall.

2) And a developed posture

After the cable pit patrols and examines robot and passes firewall: first, the jacking assembly 16 is actuated so that the base, together with the components carried on the base, is raised until the lowest height of the crawler wheels is higher than the ground level of the cable tunnel. Then, the unfolding component starts to work, the driving motor starts to rotate to drive the bidirectional screw rod 17 to rotate, the moving block 13 generates linear displacement motion and drives the cantilever plate 14 to generate unfolding motion, and the cantilever plate 14 is unfolded to enable the crawler wheels on the two sides of the base to generate separation motion. When the crawler wheels gradually cross the cable trench and are finally positioned right above the ground of the cable tunnel when being unfolded, at the moment, the jacking assembly 16 is reset again, and the two groups of crawler wheels are stably placed on the ground of the cable tunnel at the two sides of the cable trench under the action of gravity. At this time, the states of the components of the present invention are shown with reference to fig. 5 to 6.

Then, as shown in fig. 3-4, the displacement motor 26 of the camera lifting system rotates to drive the stroke block 21 to retreat along the displacement screw 25, and at this time, the first rocker 22a generates a jacking motion, so as to drive the first link 22b, the second link 22d and the second rocker 22e to generate a follow-up motion, and finally, the support rod 23 is gradually erected. The gradual erection of the support bar 23 causes the ray assembly at the top end of the support bar 23 to be raised to a specified cable viewing height. After the camera assembly 24 is lifted to a predetermined height, the camera 24c generates a pitching motion by driving the second torque motor 24d, so as to ensure that the camera 24c can always observe the cable in real time in a horizontal state. Meanwhile, the camera 24c can also drive the rotating block 24b to act through the first torque motor so as to generate a rotating action, so that the fixed-point multi-angle observation purpose is realized.

After the above-mentioned expansion action is accomplished, the athey wheel starts, the utility model discloses can advance and carry out the cable observation flow of current tunnel unit along current tunnel unit as shown in the state of fig. 3-4. After the whole process is finished, the cable trench inspection robot resets to the advancing posture shown in the figure 1-2 again, and passes through the front firewall again, so that the online observation work of the next tunnel unit can be automatically, conveniently and quickly carried out in a labor-saving and convenient manner without additional operation.

Of course, the above is one specific embodiment of the present invention. In actual operation, equivalent replacement of each power source 12, such as replacing the rotation driving action of each motor by a driving cylinder or even a gear rack manner, replacing the track wheel by another movable wheel body, or even replacing the camera 24c by another sensing structure such as a thermal imager to perform online monitoring in another manner, and the like; such conventional variations are intended to be within the scope of the present invention as embodied in the equivalent or similar design.

Claims (10)

1. The utility model provides a cable pit patrols and examines robot which characterized in that: this robot is patrolled and examined to cable pit includes that the base expandes the system and arranges the camera operating system on the base expandes the system, wherein:

the base unfolding system comprises a bottom plate (11) and two groups of linear action units arranged on the bottom plate (11) in parallel, wherein each group of linear action units comprises two groups of moving blocks (13) which can move towards and away from each other along the length direction of the bottom plate (11) under the driving of a power source (12); the moving block (13) is hinged with the fixed end of the cantilever plate (14) through a first vertical hinged shaft, the cantilever end of the cantilever plate (14) is hinged with the walking part through a second vertical hinged shaft, and the walking parts positioned on the same side of the bottom plate (11) are fixedly connected with each other to form a group of walking components (15); a vertical convex column (14d) is further arranged on the cantilever plate (14), a distance exists between the arrangement position of the vertical convex column (14d) and the arrangement position of the first vertical hinged shaft, a guide sliding groove (19) is concavely arranged on the upper plate surface of the bottom plate (11), an included angle exists between the groove length direction of the guide sliding groove (19) and the action path of the moving block (13), and the angle point of the included angle points to the advancing direction of the moving block (13) when the moving block (13) moves away from each other; the base unfolding system also comprises a jacking component (16) for jacking the walking component (15) from the cable trench to a height higher than or equal to the ground height of the cable tunnel;

the camera lifting system comprises a stroke block (21) which is arranged on a top plate (18) and can perform reciprocating linear displacement motion along the length direction of the cable trench; the camera upgrading system further comprises a simulated four-bar linkage assembly (22), wherein the bottom end of a first rocker (22a) of the simulated four-bar linkage assembly (22) extends downwards and is in hinged fit with the stroke block (21); the bottom end of the first connecting rod (22b) is fixedly connected to the end part of the top plate (18) behind the stroke block (21), and the top end of the first connecting rod (22b) extends forwards and is in hinged fit with the bottom end of the supporting rod (23); the top end of the first rocker (22a) is hinged with a first sliding sleeve (22c), and a sliding rail of the first sliding sleeve (22c) is matched with the first connecting rod (22 b); the tail end of a second connecting rod (22d) is hinged to the middle section of the rod body of the first rocker (22a), the top end of the second connecting rod (22d) is hinged to the bottom end of a second rocker (22e), the top end of the second rocker (22e) is hinged to a second sliding sleeve (22f), the sliding rail of the second sliding sleeve (22f) is matched with the supporting rod (23), and the axes of all hinged positions are horizontally arranged and are parallel to each other; the top end of the supporting rod (23) is fixedly connected with a camera shooting assembly (24).

2. The cable trench inspection robot according to claim 1, wherein: the power source (12) is a power motor, and an output shaft of the power source (12) is in power connection with a bidirectional screw rod (17); two groups of thread sections of each group of bidirectional screw rods (17) are in threaded fit with one group of moving blocks (13), so that the two groups of moving blocks (13) and one group of bidirectional screw rods (17) are matched together to form one group of linear action units.

3. The cable trench inspection robot according to claim 1 or 2, wherein: the base unfolding system also comprises a top plate (18) which is parallel to the bottom plate (11) in a plate surface mode and is arranged above the bottom plate (11); the moving block (13) is in a square block shape, the cantilever plate (14) comprises an upper suspension plate (14a) and a lower suspension plate (14b), and the upper suspension plate (14a) and the lower suspension plate (14b) extend horizontally and are hinged to the top end face and the bottom end face of the moving block (13) in a split mode; the top plate (18) is also provided with a guide sliding chute (19), the vertical convex column (14d) at the upper suspension plate (14a) vertically extends upwards to form a guide matching relation with the guide sliding chute (19) at the top plate (18), and the vertical convex column (14d) at the lower suspension plate (14b) vertically extends downwards to form a guide matching relation with the guide sliding chute (19) at the bottom plate (11); a reinforcing plate (14c) having a structural reinforcing function is disposed between the upper suspension plate (14a) and the lower suspension plate (14 b).

4. The cable trench inspection robot according to claim 3, wherein: the top plate (18), the bottom plate (11), the moving block (13), the cantilever plate (14) and the walking assembly (15) are matched together to form a base; sensing parts (30) for controlling the advancing direction of the base are respectively arranged at the front end and the rear end of the base; the sensing ends of the two groups of sensing parts (30) positioned at the same end of the base are horizontally arranged and respectively point to the directions of two side walls of the cable tunnel; the walking assembly (15) is a crawler wheel.

5. The cable trench inspection robot according to claim 3, wherein: synchronous gears (60) which are meshed with each other synchronously are arranged on the two groups of cantilever plates (14) at the same end of the bottom plate (11).

6. The cable trench inspection robot according to claim 1 or 2, wherein: the jacking assembly (16) comprises a jacking block (16 a); the front end of the top block (16a) is hinged and fixed at the bottom end of a first swing rod (16b) through a first horizontal hinged shaft, and the top end of the first swing rod (16b) is hinged and fixed at the front end of the bottom plate (11) through a second horizontal hinged shaft; the rear end of the top block (16a) is hinged to the bottom end of a second swing rod (16c) through a third horizontal hinged shaft, and the top end of the second swing rod (16c) is in power connection with an output shaft of a swing arm motor (16d) positioned at the tail end of the bottom plate (11).

7. The cable trench inspection robot according to claim 6, wherein: the top blocks (16a) are two groups of straight rod-shaped blocks, and the two groups of top blocks (16a) are fixedly connected with each other through a transverse pull rod (16e) to form a horizontal square frame structure.

8. The cable trench inspection robot according to claim 1 or 2, wherein: the linear displacement unit comprises a displacement motor (26) and a displacement screw rod (25) coaxially and fixedly connected to an output shaft of the displacement motor (26), and the stroke block (21) is in threaded fit with the displacement screw rod (25); the displacement motor (26) is positioned at the rear part of the top plate (18), an extension frame (40) extends outwards from the rear part of the top plate (18) along the length direction of the base, and a hinge seat is arranged on the extension frame (40) so as to be hinged with the bottom end of the first connecting rod (22 b); the height of the bottom end hinge point of the first connecting rod (22b) is higher than that of the bottom end hinge point of the first rocker (22 a).

9. The cable trench inspection robot according to claim 8, wherein: a supporting block (50) used for supporting the supporting rod (23) is arranged at the position, close to the bottom end, of the first connecting rod (22b), and a placing groove (51) facilitating the supporting rod (23) to be placed is concavely arranged on the supporting block (50).

10. The cable trench inspection robot according to claim 1 or 2, wherein: the camera shooting assembly (24) comprises a camera shooting seat (24a) and a rotating block (24b) horizontally hinged to the camera shooting seat (24a), a first torsion motor is arranged on the rotating block (24b), and an output shaft of the first torsion motor vertically extends upwards and is fixedly connected with a camera (24c) so as to drive the camera (24c) to rotate; the rotating block (24b) is driven by a second torsion motor (24d) arranged on the camera seat (24a) to generate pitching motion.

Images