CN113650502B - Self-adaptive stable contact electricity taking device of hybrid power dump truck - Google Patents

Abstract

The invention discloses a self-adaptive stable contact electricity taking device of a hybrid power dump truck, which comprises a chassis, a lifting device, a lower arm, a lower guide rod, an upper arm, an upper guide rod and a self-adaptive bow head, wherein the lower arm is connected with the chassis; the lower arm is hinged on the underframe, one end of the lower arm is connected with a lifting device, the lifting device drives the lower arm to rotate at a hinge point, and the other end of the lower arm is hinged with one end of the upper arm; the self-adaptive bow head comprises a transverse plate connected with the upper arm, sliding rails are arranged on two sides of the transverse plate, a top beam is arranged above the sliding rails and hinged with the sliding rails through a hinging rod, and the top beam, the hinging rod and the sliding rails form an isosceles trapezoid structure together; an elastic component is arranged between the top beam and the sliding rail, and the top beam moves downwards to enable the elastic component to elastically deform; a limit rod is arranged on the top beam in a downward extending way; the structure of the electric power taking bow is improved, so that the electric power taking bow has certain buffering capacity, and the electric power taking bow is stably contacted with a power grid through buffering, so that the problem is solved.

Description

Self-adaptive stable contact electricity taking device of hybrid power dump truck

Technical Field

The application relates to an electric bow taking structure, in particular to a self-adaptive stable contact electric taking device of a hybrid power dump truck.

Background

Dump trucks are vehicles that self-unload cargo by hydraulic or mechanical lifting; also known as a dump truck. The hydraulic lifting device consists of an automobile chassis, a hydraulic lifting mechanism, a cargo box, a power taking device and the like. The dumper has a very wide and mature application system in actual production, such as wide application in building and mining fields.

In the field of mining dumpers, the current power system mainly adopts three modes of internal combustion engine driving, electric driving and hybrid power, and in recent years, the reduction of carbon emission is promoted in China, but the emission of the mining dumpers is considerable due to very high power, so that in recent years, the electric driving and oil-electric hybrid driving modes are gradually developed, no matter hybrid power or pure electric driving, when the mining dumpers are powered, the dumpers are powered by using a power taking bow mounted on the roof of the mining dumpers, and in a specific embodiment, a power grid is erected on two sides of a road of a mining factory, the power taking bow is mounted on the roof of the dumpers, and the dumpers are powered by lifting the power taking bow.

However, in practical implementation, the mine plant road is not flat like a rail train, the road surface is bumpy, in the process of taking electricity, when the road surface is bumpy (in fact, the road surface is often encountered), the contact force between the electric wire netting and the electric wire netting is instantaneously increased or separated, and the unstable contact generates two problems, when the contact force is increased, the friction force between the electric wire netting and the electric wire netting is increased, the increase of the friction force is the reverse of the serious consumption of the electric wire netting, and once the electric wire netting generates 'continuous cropping', serious potential safety hazards can occur. If the two parts are separated, the problem of connection instability can generate virtual connection, so that the power system of the dump truck is insufficient and even burns out, and the problem leads to the instability of the current electric bow and the current electric bow. If the asphalt road is built in a mine site, the problem is solved, and the method faces huge cost, and because the tonnage of the mining dump truck is quite large, the paving cost of the asphalt road is quite expensive, the service life is short, and the practical consumption is quite huge.

Disclosure of Invention

In view of the above, the present invention aims to provide an adaptive stable contact power taking device of a hybrid dump truck, which structurally upgrades a power taking bow to have a certain buffering capacity, and the power taking bow is lifted to be in stable contact with a power grid through buffering, so as to solve the above problems.

In a first aspect, the self-adaptive stable contact electricity taking device of the hybrid power dump truck provided by the application comprises a chassis, a lifting device, a lower arm, a lower guide rod, an upper arm, an upper guide rod and a self-adaptive bow; the lower arm is hinged on the underframe, one end of the lower arm is connected with a lifting device, the lifting device drives the lower arm to rotate at a hinge point, and the other end of the lower arm is hinged with one end of the upper arm; a lower guide rod is connected between the lower arm and the base, and upper guide rods are connected at two ends of the upper arm to form an electricity taking lifting frame, and the electricity taking lifting frame is lifted up and down to take out electricity through a lifting device; the other end of the upper arm is provided with a self-adaptive bow;

the self-adaptive bow head comprises a transverse plate connected with the upper arm, sliding rails are arranged on two sides of the transverse plate, a top beam is arranged above the sliding rails and hinged with the sliding rails through a hinging rod, and the top beam, the hinging rod and the sliding rails form an isosceles trapezoid structure together; an elastic component is arranged between the top beam and the sliding rail, and the top beam moves downwards to enable the elastic component to elastically deform; a limiting rod is arranged on the top beam in a downward extending way and can slidably penetrate through a constraint block connected with the transverse plate; the top beam is provided with an electric taking bow.

When the sliding rail is specifically arranged, the section of the sliding rail is of a T-shaped structure, a limiting piece is arranged on a protrusion at the outer end of the sliding rail, the limiting piece is transversely arranged on the protrusion of the sliding rail, the upper surface of the limiting piece is flush with the protrusion of the sliding rail, and a hollowed-out state is formed between the lower surface of the limiting piece and the rail bottom of the sliding rail for dust removal; the other end of the sliding rail is provided with a notch for dust removal at the rail bottom.

On the basis, when the sliding rail is further arranged, the sliding rail is divided into two groups, and the middle parts of the sliding rail are separated by a constraint table for installing the elastic component. The purpose of the restraint platform is to bear the limit rod.

When the hinge rod is specifically hinged, one end of the hinge rod is hinged with the lower surface of the top beam, the other end of the hinge rod is hinged with a sliding block, a notch matched with the sliding rail is formed in the lower surface of the sliding block, and the sliding block is installed on the sliding rail and slides along the sliding rail.

When the elastic component is specifically arranged, the elastic component is a spring, the upper end of the spring is propped against the top beam, and the lower end of the spring is propped against the constraint block.

When the limiting rod is specifically arranged, the baffle plate is arranged at the lower end of the limiting rod in an adjustable position, and the elastic hardness of the top beam is adjusted through the baffle plate.

When the constraint block is specifically arranged, the constraint block is divided into an upper layer and a lower layer, a first through hole for a limiting rod to pass through is formed in the upper layer, a second through hole is formed in the lower layer, and the aperture of the first through hole is 4-8mm larger than the diameter of the limiting rod; the second through hole is assembled with the limiting rod in a clearance fit manner; the advancing direction of the electric bow between the upper layer and the lower layer is set to be an open structure, and the opposite end of the opening is set to be an oblique closing structure. The upper layer is a basic surface for the top arrangement of the spring, and the lower layer is used for filtering out dust adhered on the limiting rod, and the dust can cause larger resistance when the limiting rod slides; the lower layer effect can restrict the position of the limiting rod, dust on the limiting rod which is assembled in a clearance fit manner can be scraped to the clearance position of the upper layer and the lower layer, and the scraped dust also needs to be cleaned.

The beneficial effects of the invention are as follows:

the self-adaptive bow head is particularly designed, so that stable connection between the electric bow and the power grid can be ensured when the mining dump truck encounters bump on a travelling path, wherein stable connection refers to that when the mining dump truck encounters a bump section, the electric bow and the power grid cannot be severely extruded or separated by the aid of the buffer mechanism, the threshold value of the contact range of the electric bow and the power grid is technically enlarged, and self-adaptive adjustment can be timely performed when the mining dump truck encounters the bump section; as is well known, when the dump truck encounters a hollow or a raised road section, jolt in the vertical direction is generated, and when the dump truck jolts upwards, forced extrusion is caused between the electric wire netting and the electric wire netting, and as a result of the forced extrusion, friction force is increased, and the abrasion of the electric wire netting and the electric wire netting is increased due to the increased friction force, so that the service life of the dump truck is reduced; when the dump truck jolts downwards, the problem that the electric bow is separated from the power grid occurs, and the separation can seriously affect the stability of power supply, and the consequence is that the power is severely reduced or the circuit system of the dump truck is burnt, and the results are unacceptable. The stable connection is also the most important problem when the power grid receives electricity to the pantograph, and is also the basic problem.

Second, the precondition for maintaining the technical effectiveness of the present application is: the smoothness of the upper and lower elastic floating of the electric bow is a basic guarantee, and if the electric bow is clamped or unsmooth when floating up and down, the technical effect of the electric bow can be seriously attenuated. On a mine, dust flies, and the working condition is very bad, so that the smooth operation of the mechanical structure has to consider the influence of the dust on the smoothness of the mechanical structure; in the actual working process, dust is easy to accumulate on the sliding rail and the limiting rod, and the two mechanisms are sliding mechanisms, so that the accumulation of dust seriously influences the smoothness of the action, the action of floating up and down is slowed down, and the effect generated by floating is directly lowered; therefore, the dust exhaust problem needs to be solved; on the dust removal problem to the slide rail, this application adopts the spacing piece of special setting at the outer end of slide rail, has solved the dust removal problem, discovers when actual implementation that the slip of slider mainly can make the dust accumulate at the top of a rail and the bottom of a rail of slide rail, to the top of a rail, the upper surface of this application stopper is flush with the top of a rail, and the dust of accumulation like this can be smoothly "pushed away" by the slide rail, to the bottom of a rail, also the accumulation of dust at the bottom of a rail can be avoided to the same reason, this is one. Secondly, the limiting block is required to carry out position constraint on the limiting rod, so that the freedom degree of the top beam in the horizontal direction is limited, however, the matched movement between the limiting rod and the limiting block is easy to accumulate, so that the electric bow is not smooth to float upwards or float downwards; therefore, the dust discharging design is carried out at the position, in the application, the constraint block is designed into an upper layer and a lower layer, the upper layer is specially used for a top spring, the gap between the upper layer and the lower layer is specially used for timely cleaning dust around the limiting rod, the advancing direction end (equivalent to the air inlet of the gap) of the gap at the position is processed into an open structure, and the tail end (equivalent to the air outlet of the gap) of the gap is processed into an inclined closing structure; the open air inlet enables the vehicle to enter more air quantity when traveling, and the air outlet is of an inclined closing structure, so that the pressure and the speed of air flow entering the gap are improved in the gap, and dust on the limiting rod is blown away; the inclined closing-in structure ensures that the air is blown away from the device; secondly, because the air flow velocity in the gap is high, the air flow can enter the gap from the first through hole on the upper layer, the air flow pressure in the gap is further enhanced, and timely and effective dust blowing is realized, so that the dust removing method for the limiting rod is provided; if the dust is not discharged in time, the stop lever can generate a clamping and stopping action when floating upwards or downwards, so that the sliding action is slowed down, and the actual effect is very influenced.

Drawings

Fig. 1 is a schematic view of the adaptive bow of the present invention mounted on a power take-off rack.

Fig. 2 is a schematic view of the adaptive bow head structure of the present invention.

Fig. 3 is a schematic view of the adaptive bow-head downfloat of the present invention.

FIG. 4 is a schematic diagram of the flow direction principle of the air flow of the restraint block of the invention (cross section, front view is a cut-away).

Fig. 5 is a schematic perspective view of the structure of the restraint block of the present invention (cross section, front view is a cut-away plane).

In the figure, a bottom frame 1, a lifting device 2, a lower arm 3, a lower guide rod 4, an upper arm 5, an upper guide rod 6, a transverse plate 8, a sliding rail 9, a limiting piece 9.1, a notch 9.2, a hinge rod 10, a sliding block 10.1, a top beam 11, an elastic component 12, a constraint block 13, an upper layer 13.1, a lower layer 13.2, a gap 13.3, a blocking piece 14, a limiting rod 15 and an electric bow 16 are arranged.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.

In order to facilitate understanding of the adaptive stable contact power taking device provided in the embodiments of the present application, an application scenario thereof is first described below.

The self-adaptive stable contact power taking device is mainly applied to a trackless mining dump truck; the tramcar has the advantages that the track surface is flat, and the train cannot generate a bump state with a large amplitude on the track, so that the problem is avoided; the mining dump truck is trackless, the pavement on which the mining dump truck is driven is also the pavement of a mine, and the mine is not provided with asphalt pavement, so that the road jolt is a necessary result, and if the mining dump truck can stably take electricity from a power grid, the stable contact between the electric bow 16 and the power grid needs to be ensured, and the electric bow 16 and the power grid cannot be in contact with overlarge pressure or virtual connection; the bumpy road surface directly generates the two problems, so that the contact between the electric bow 16 and the power grid is unstable, and based on the problem, the self-adaptive stable contact electricity taking device is developed.

For a clear understanding of the technical solution of the present application, the following details of the chassis provided in the present application will be described with reference to specific embodiments and accompanying drawings.

The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include, for example, "one or more" such forms of expression, unless the context clearly indicates to the contrary. It should also be understood that in the various embodiments herein below, "at least one", "one or more" means one, two or more than two.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in various places throughout this specification are not necessarily all referring to the same embodiment, but mean "one or more, but not all, embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

As shown in fig. 1, the application shows a schematic view of an adaptive bow mounted on an electricity taking frame, mainly comprising a bottom frame 1, a lifting device 2, a lower arm 3, a lower guide rod 4, an upper arm 5, an upper guide rod 6 and the adaptive bow; wherein, a lower arm 3 is hinged on the underframe 1, one end of the lower arm 3 is connected with a lifting device 2, the lifting device 2 drives the lower arm 3 to rotate at a hinge point, and the other end of the lower arm 3 is hinged with one end of an upper arm 5; and be connected with lower guide arm 4 between lower arm 3 and base, be connected with upper guide arm 6 at upper arm 5 both ends, constitute and get electric crane, make through elevating gear 2 get electric crane realize the oscilaltion and get outage, constitute and go up and down to get electric crane. The prior lifting power taking frame structure technology is mature and mainly applied to rail trains. The self-adaptive bow of the invention can be applied to trolley buses or hybrid vehicles, such as mining dump trucks, by adding the self-adaptive bow to the free end of the upper arm 5.

As shown in fig. 2 and 3, the adaptive bow head of the present application includes a transverse plate 8 connected to an upper arm 5, and T-shaped sliding rails 9 are provided on both sides of the transverse plate 8, where the constraint of the T-shaped sliding rails 9 on the sliding blocks 10.1 is minimal, and no dead angle can be achieved, so that the sliding smoothness of the sliding rails 9 is excellent in other forms; a top beam 11 is arranged above the sliding rail 9 and parallel to the sliding rail 9, and the top beam 11 is hinged with the sliding rail 9 through two groups of hinging rods 10; the top beam 11, the hinging rod 10 and the sliding rail 9 form an isosceles trapezoid structure, so that the isosceles trapezoid structure is arranged to ensure that the same stress is kept when the top beam 11 is pressed down, the top beam 11 is always in a horizontal state when the top beam moves down, and the stable contact of the electric bow 16 is ensured; an elastic component 12 is arranged between the top beam 11 and the sliding rail 9, the top beam 11 moves downwards to enable the elastic component 12 to elastically deform, the elastic component 12 can ensure that the top beam 11 can automatically bounce upwards when not stressed, and the bouncing speed is high and the delay is small; meanwhile, the buffer function can be realized when the device is stressed; a limiting rod 15 is arranged on the top beam 11 in a downward extending mode, the limiting rod 15 slidably penetrates through a limiting block 13 connected with the transverse plate 8, and the limiting rod 15 is used for further ensuring that the top beam 11 can continuously keep rising or falling horizontally when being stressed or not stressed; a pantograph 16 is provided on the top beam 11. When electricity is taken on the basic structure, the lifting electric bow 16 is lifted to be contacted with the power grid to be compressed by half of the compression amount of the elastic component 12, and when the structure is held by the self-discharging vehicle, if the self-discharging vehicle encounters a raised road section, the spring can be further compressed to reduce the impact of the electric bow 16 on the power grid, and the extrusion force between the electric bow and the power grid is reduced, so that the bidirectional abrasion is reduced; when the electric power supply is in a hollow road section, the electric power supply bow 16 moves downwards, and at the moment, due to the rebound of the elastic component 12, the electric power supply bow 16 is always contacted with a power grid, the connection cannot be interrupted suddenly, and the connection stability is greatly enhanced.

When the hinge rod 10 is specifically hinged, one end of the hinge rod 10 is hinged with the lower surface of the top beam 11, the other end of the hinge rod 10 is hinged with the sliding block 10.1, a notch matched with the sliding rail 9 is formed in the lower surface of the sliding block 10.1, and the sliding block 10.1 is installed on the sliding rail 9 and slides along the sliding rail 9.

As shown in fig. 3, as an example, the whole mechanism can smoothly operate on the premise of producing technical effects, dust is the biggest problem affecting the smooth operation of the mechanism, especially in mining areas, the field environment is extremely severe, the dust problem is the problem to be solved, when the sliding rail 9 is specifically arranged, the limiting piece 9.1 is arranged on the protrusion at the outer end of the T sliding rail 9, the limiting piece 9.1 is transversely arranged on the protrusion of the sliding rail 9, the upper surface is flush with the protrusion of the sliding rail 9, the lower surface and the rail bottom of the sliding rail 9 are in a hollowed-out state for dust removal, the limiting piece 9.1 achieves the limiting effect and also achieves the effect of 'not blocking' dust removal, namely dust on the sliding rail 9 is easy to be accumulated on the rail top and the rail bottom, dust accumulated on the rail top is not accumulated and is smooth dust removal due to the fact that the upper surface of the limiting piece 9.1 is flush with the rail top, and the dust removal is smooth due to the hollowed-out state of dust removal can be achieved; the other end of the sliding rail 9 is provided with a notch 9.2 for dust removal at the rail bottom; the sliding block 10.1 slides back and forth on the sliding rail 9, dust is generated on the sliding rail 9 on two sides of the sliding block 10.1 in the same way, so that the two ends of the sliding block 10.1 face the same problem, and therefore, a dust discharging port is arranged at the other end of the sliding rail 9.

As shown in fig. 2 and 3, in addition, in consideration of the installation of the stopper rod 15, the shear force of the stopper block 13 is minimized during the sliding process when the stopper rod 15 is installed at the center of the top beam 11, so that the slide rail 9 is divided into two groups, the middle portions of which are separated by the restraining table for installing the elastic member 12, when the slide rail 9 is further provided on the above basis. The restraint platform is connected with the diaphragm 8, and it can produce the constraint of horizontal direction to gag lever post 15, makes it only to slide from top to bottom, and the upper and lower slip of gag lever post 15, in turn just can guarantee that back timber 11 can the horizontal upper and lower slip.

As shown in fig. 2, in one embodiment, when the elastic member 12 is specifically provided, the elastic member 12 is a spring, the upper end of the spring is supported on the top beam 11, and the lower end of the spring is supported on the restraint block 13.

As shown in fig. 2 and 3, as one embodiment, when the above-mentioned limit lever 15 is specifically provided, a baffle 14 is provided at the lower end of the limit lever 15 in an adjustable position, and the elastic hardness of the top beam 11 is adjusted by the baffle 14; the sliding rail 9 is a T-shaped sliding rail 9, so that the sliding rail 9 and the sliding block 10.1 are not interlocked, and can be separated, and the purpose of the design is to reduce the limitation of the sliding rail 9 to the sliding block 10.1, reduce friction surfaces of the sliding rail 9 and the sliding block as far as possible, and promote the smoothness degree of sliding of the sliding block and the sliding block, so that the function of connecting the top beam 11 and the transverse plate 8 is realized through the sliding rail 14, and the self-adaptive bow head is ensured to be a whole.

As shown in fig. 3, 4 and 5, in one embodiment, not only the sliding rail 9 but also the limit rod 15 needs to be subjected to dust removal, in the actual implementation, the accumulation of dust can cause the speed of the limit rod 15 to be reduced when the limit rod slides on the constraint block 13, so that when the top beam 11 slides up and down, the top beam is slowed down, even the top beam cannot move in a certain state, and manual cleaning is required, but because of the excessive dust in a mining area, the manual cleaning is not practical at all; based on the method, the method is real-time and continuous cleaning, so that excessive accumulation is avoided, and jamming is not easy to occur; therefore, when the restraint block 13 is specifically arranged, the restraint block 13 is divided into an upper layer 13.1 and a lower layer 13.2, the upper layer 13.1 is provided with a first through hole for the limit rod 15 to pass through, the lower layer 13.2 is provided with a second through hole, and the aperture of the first through hole is 4-8mm larger than the diameter of the limit rod 15; the second through hole is matched and assembled with the gap 13.3 of the limit rod 15; the advancing direction of the pantograph 16 between the upper and lower layers 13.1 and 13.2 is set to an open structure, and is set to an inclined close structure at the opposite end of the opening. The upper layer 13.1 is used as a basic surface for the top arrangement of the spring, and the lower layer 13.2 is used for filtering out dust adhered on the limiting rod 15, and the dust can cause larger resistance when the limiting rod 15 slides; the lower layer 13.2 can restrict the position of the limiting rod 15, dust on the limiting rod 15 in the assembling mode of matching the gaps 13.3 can be scraped to the gap 13.3 position of the upper layer 13.1 and the lower layer 13.2, the scraped dust also needs to be cleaned, and the structure of the restricting block 13 is specially arranged, so that the scraped dust can be blown off in time by utilizing the air quantity generated when the dust advances, and meanwhile, the dust accumulated on the limiting rod 15 can be blown off; the problem of the stop lever 15 slip that dust led to is obstructed is solved. The specific principle is as follows: the end of the gap 13.3 formed by the upper layer 13.1 and the lower layer 13.2 in the advancing direction (corresponding to the air inlet of the gap 13.3) is processed into an open structure, and the tail end of the gap 13.3 (corresponding to the air outlet of the gap 13.3) is processed into an inclined closing structure; the open air inlet enables the vehicle to enter more air quantity when traveling, and the air outlet is of an inclined closing structure, so that the air flow entering the gap 13.3 is pressurized and accelerated in the gap 13.3, which is equivalent to the generation of compressed air, thereby realizing the blowing-away of dust on the limit rod 15; the inclined closing-in structure ensures that the air is blown away from the device; the self-discharging device skillfully utilizes wind power generated when the self-discharging vehicle advances, pressurizes and accelerates the self-discharging vehicle, so that dust is blown away as much as possible; secondly, because the air flow velocity in the gap 13.3 is high (compared with the outside), the pressure in the gap 13.3 is small, and then the air flow can enter (or be called to be pumped into) the gap 13.3 from the first through hole on the upper layer 13.1, so that the air flow pressure in the gap 13.3 is further enhanced, and the timely and effective dust blowing away is realized, which is the dust exhausting means principle of the limiting rod 15.

In the implementation of the present application, when the electric bow 16 is lifted by the electric power taking frame, the compression amount of the spring which is compressed by half should be ensured, so that the buffer purpose is achieved and the technical effect of stable connection is realized when the electric power taking frame encounters a bumpy road section during traveling.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. The self-adaptive stable contact electricity taking device of the hybrid power dump truck comprises a chassis, a lifting device, a lower arm, a lower guide rod, an upper arm, an upper guide rod and a self-adaptive bow head; the lower arm is hinged on the underframe, one end of the lower arm is connected with a lifting device, the lifting device drives the lower arm to rotate at a hinge point, and the other end of the lower arm is hinged with one end of the upper arm; a lower guide rod is connected between the lower arm and the base, and upper guide rods are connected at two ends of the upper arm to form an electricity taking lifting frame, and the electricity taking lifting frame is lifted up and down to take out electricity through a lifting device; the other end of the upper arm is provided with a self-adaptive bow; the method is characterized in that:

the self-adaptive bow head comprises a transverse plate connected with the upper arm, sliding rails are arranged on two sides of the transverse plate, a top beam is arranged above the sliding rails and hinged with the sliding rails through a hinging rod, and the top beam, the hinging rod and the sliding rails form an isosceles trapezoid structure together; an elastic component is arranged between the top beam and the sliding rail, and the top beam moves downwards to enable the elastic component to elastically deform; a limiting rod is arranged on the top beam in a downward extending way and can slidably penetrate through a constraint block connected with the transverse plate; the top beam is provided with an electric taking bow;

the restraint block is divided into an upper layer and a lower layer, wherein the upper layer is provided with a first through hole for the limiting rod to pass through, the lower layer is provided with a second through hole, and the aperture of the first through hole is 4-8mm larger than the diameter of the limiting rod; the second through hole is assembled with the limiting rod in a clearance fit manner; the advancing direction of the electric bow between the upper layer and the lower layer is set to be an open structure, and the opposite end of the opening is set to be an oblique closing structure.

2. The adaptive stable contact power taking device of the hybrid dump truck according to claim 1, wherein: the cross section of the sliding rail is of a T-shaped structure, a limiting piece is arranged on a protrusion at the outer end of the sliding rail, the limiting piece is transversely arranged on the protrusion of the sliding rail, the upper surface of the limiting piece is flush with the protrusion of the sliding rail, and a hollowed-out state is formed between the lower surface of the limiting piece and the rail bottom of the sliding rail for dust removal; the other end of the sliding rail is provided with a notch for dust removal at the rail bottom.

3. The adaptive stable contact power taking device of the hybrid dump truck according to claim 2, wherein: the slide rail is divided into two groups, and the middle parts are separated by a constraint table for installing the elastic component.

4. The adaptive stable contact power taking device of the hybrid dump truck according to claim 1, wherein: one end of the hinging rod is hinged with the lower surface of the top beam, the other end of the hinging rod is hinged with a sliding block, a notch matched with the sliding rail is arranged on the lower surface of the sliding block, and the sliding block is arranged on the sliding rail and slides along the sliding rail.

5. The adaptive stable contact power taking device of the hybrid dump truck according to claim 1, wherein: the elastic component is the spring, and the spring upper end overhead is on the back timber, and the lower extreme overhead of spring is on the restriction piece.

6. The adaptive stable contact power taking device of the hybrid dump truck according to claim 1, wherein: a baffle is arranged at the lower end of the limiting rod in an adjustable position.

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