CN212580010U

CN212580010U - Tractor

Info

Publication number: CN212580010U
Application number: CN202021448101.2U
Authority: CN
Inventors: 刘明增; 王永; 左贵杰; 汪贞伟; 王晓龙; 陈修乐; 席杰; 刘军; 裴栓乐
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-23
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a tractor relates to tractor technical field. The tractor comprises a front frame, a front balance weight, a rear frame, a coupler fixing structure and a rear coupler, wherein the front coupler is arranged inside the front frame, the front coupler extends out of the front frame along the advancing direction of a vehicle, the front balance weight is supported on the front frame, the rear frame is hinged with the front frame, the rear frame comprises a rear plate which is arranged at the tail end of the rear frame along the advancing direction of the vehicle, the coupler fixing structure extends along the retreating direction of the vehicle and is connected with the rear plate, and the rear coupler is arranged in the coupler fixing structure and extends out of the coupler fixing structure along the retreating direction part of the vehicle. The front frame is hinged with the rear frame, so that the tractor can steer conveniently, the purpose of towing a container can be achieved through the front coupler and the rear coupler, and meanwhile, the rear coupler is connected with a rear plate of the rear frame, so that the tractor is beneficial to structural arrangement of the rear frame compared with the prior art; in addition, the front balance weight is arranged, so that the arrangement of the whole vehicle can be guaranteed, and the traction requirement of heavy-load goods can be met.

Description

Tractor

Technical Field

The utility model relates to a tractor technical field especially relates to a tractor.

Background

At present, train tracks are laid in partial ports and steel mills, and cargo is transferred by a cargo box so as to improve the transportation efficiency of the cargo. In such conditions, a tractor is required to pull the container to travel on the track. Harbors or steel mills are generally constructed with a plurality of parallel short-distance rails, and frequent turning and pulling of tractors on the plurality of rails are required. A wheel loader is a multifunctional scraper, and is widely used in ports, mines, steel mills, and the like. The loader has the characteristics of large output traction force, flexible articulated steering and the like, and meets the requirements of the tractor. Thus, some ports and steel mills have converted tractors on a loader basis for towing containers.

The tractor refitted on the basis of the loader in the prior art has the problem of unreasonable structural arrangement, and the tractor cannot meet the traction requirement of heavy-load goods because enough balance weights are not arranged on the front side of the whole tractor; and the rear coupler is arranged in the frame, which is not beneficial to the structural arrangement of the rear frame.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tractor, enough counter weight, structural arrangement is reasonable are arranged to the front side at the complete machine.

To achieve the purpose, the utility model adopts the following technical proposal:

a tractor, comprising:

the front car comprises a front frame, a front car coupler and a rear car coupler, wherein the front frame is internally provided with the front car coupler, and the front car coupler extends out of the front frame along the advancing direction of the car;

a front counterweight supported on the front frame;

the rear frame is hinged with the front frame and comprises a rear plate arranged at the tail end of the rear frame along the advancing direction of the vehicle;

a coupler fixing structure extending in a backward direction of the vehicle and connected to the rear plate;

and the rear coupler is arranged in the coupler fixing structure and partially extends out of the coupler fixing structure along the retreating direction of the car.

Optionally, the front frame comprises:

the hinged plate is used for being hinged with the rear frame;

the supporting assembly is connected with the hinged plate and located on the front side of the hinged plate in the advancing direction of the vehicle, the supporting assembly comprises a supporting plane located below the upper end face of the hinged plate, and the front counterweight is simultaneously supported on the supporting plane and the upper end face of the hinged plate.

Optionally, the front counterweight includes a first portion and a second portion, the first portion is supported by the support plane, the second portion is supported by the upper end face of the hinge plate, the upper end face of the first portion is inclined, and a distance between the upper end face and the ground in the advancing direction of the vehicle gradually decreases.

Optionally, the support assembly includes two support members spaced apart in the vehicle width direction, both of the support members are connected to the hinge plate, and the support plane includes upper end surfaces of the two support members.

Optionally, the front frame further comprises two webs, the two webs are arranged at intervals and are connected with the hinged plate, and the two webs are respectively connected with the two supporting pieces.

Optionally, preceding frame still includes the baffle, the baffle respectively with two the top of web is connected, baffle and two the web encloses to be established into first holding tank, first holding tank is used for acceping the front coupler.

Optionally, the coupler fixing structure includes a mounting seat, the mounting seat is connected to the rear plate, a second receiving groove is formed in the mounting seat, and the second receiving groove is used for receiving the rear coupler.

Optionally, coupler fixed knot constructs still includes first layer board, first layer board set up in the downside and both ends of back coupler all with the mount pad is connected, the protruding regulating block that is equipped with of first layer board, the regulating block can with back coupler butt.

Optionally, coupler fixed knot constructs still include the regulating plate and with the second layer board that first layer board interval set up, the second layer board support in the downside of rear coupler and both ends all with the mount pad is connected, the regulating plate can be located the second layer board with between the mount pad.

Optionally, the tractor further comprises a rear counterweight supported on the rear frame.

The utility model has the advantages that: the utility model provides a tractor, whole car divide into front truck frame and back frame, and the two are articulated, are favorable to this tractor to turn to, and be provided with the front-end coupler in front truck frame front side, the back frame rear side is provided with the back coupling, accomplish the purpose of pulling the packing box through front-end coupler and back coupling, the back coupling is connected with the back plate of back frame simultaneously, compare with the back coupling setting inside the back frame among the prior art, be favorable to the structural arrangement of back frame; in addition, the front counterweight is arranged on the front frame, so that the sufficient counterweight can be arranged on the front side of the whole vehicle, the structural arrangement is reasonable, and the traction requirement of heavy-load goods can be met.

Drawings

Fig. 1 is a schematic structural diagram of a tractor provided by an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

fig. 3 is a schematic view of a first perspective view of a front frame of a towing vehicle according to an embodiment of the present invention;

fig. 4 is a schematic view of a second perspective view of a front frame of a towing vehicle according to an embodiment of the present invention;

fig. 5 is a schematic view of a first view angle of a coupler fixing structure of a towing vehicle according to an embodiment of the present invention;

fig. 6 is a schematic view of a second viewing angle of the coupler fixing structure of the tractor according to the embodiment of the present invention.

In the figure:

1-a front frame; 10-a lower bottom plate; 11-hinged plate; 12-side plates; 13-a support; 131-a first support plate; 1311-a first cross plate; 1312-a second connecting plate; 1313-a second cross plate; 132-a vertical plate; 133-connecting ribs; 14-a web; 141-a first riser; 142-a first connection plate; 143-a second riser; 15-a baffle; 16-a cross beam; 17-coupler mounting seats; 18-a front plate; 181-opening; 19-a reinforcement plate;

2-front car coupler; 3-front counterweight;

4-rear frame; 41-a back plate;

5-rear car coupler; 6-rear counterweight;

7-coupler fixing structure; 71-a mounting seat; 711-side beam; 7111-riser; 7112-a first plate; 7113-a second plate; 7114-reinforcing ribs; 712-a limiting member; 713-third connecting plate; 714-a second support plate; 715-a second impingement seat; 72-a first pallet; 73-an adjusting block; 74-a second pallet; 75-a cover plate; 76-wear plate; 77-protective plate;

8-engine cover.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention will be further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, the tractor includes a front frame 1, a front counterweight 3, a rear frame 4, a coupler fixing structure 7 and a rear coupler 5, wherein the front coupler 2 is disposed inside the front frame 1, the front coupler 2 extends out of the front frame 1 along a forward direction (b direction in fig. 1) of the tractor, the front counterweight 3 is supported on the front frame 1, the rear frame 4 is hinged to the front frame 1, the rear frame 4 includes a rear plate 41 disposed at an extreme end of the rear frame 4 along the forward direction of the tractor, the coupler fixing structure 7 extends along a backward direction (b direction in fig. 1) of the tractor and is connected to the rear plate 41, and the rear coupler 5 is disposed inside the coupler fixing structure 7 and partially extends out of the coupler fixing structure 7 along the backward direction of the tractor. It can be understood that the tractor is divided into a front frame 1 and a rear frame 4 which are hinged to facilitate steering of the tractor, a front coupler 2 is arranged on the front side of the front frame 1, a rear coupler 5 is arranged on the rear side of the rear frame 4, the purpose of towing a container is achieved through the front coupler 2 and the rear coupler 5, meanwhile, the rear coupler 5 is connected with a rear plate 41 of the rear frame 4, and compared with the prior art that the rear coupler 5 is arranged inside the rear frame 4, the tractor is beneficial to structural arrangement of the rear frame 4; in addition, the front counterweight 3 is arranged on the front frame 1, so that enough counterweight can be arranged on the front side of the whole vehicle, the structural arrangement is reasonable, and the traction requirement of heavy-load goods can be met.

Optionally, the tractor further comprises a rear counterweight 6, the rear counterweight 6 being supported to the rear frame 4. In this embodiment, the rear counter weight 6 is disposed on two sides of the rear frame 4 along the vehicle width direction (a direction in fig. 1), the rear coupler 5 is connected to the middle position of the rear plate 41, the installation position of the rear counter weight 6 can be ensured not to affect the rear coupler 5, the rear coupler 5 is convenient to structurally arrange, and the rear counter weight 6 can be ensured to be disposed on the rear side of the whole vehicle to provide sufficient counter weight, so as to meet the traction requirement of the tractor. In other embodiments, the rear counterweight 6 may not be provided if other structures of the rear frame 4 can meet the towing requirements of the towing vehicle.

Alternatively, as shown in fig. 3 and 4, the front frame 1 includes a hinge plate 11 for connecting with the rear frame 4 and a support assembly connected with the hinge plate 11, the support assembly being located at a front side of the hinge plate 11 in the advancing direction of the vehicle, the support assembly including a support plane located below an upper end surface of the hinge plate 11; the front weight 3 is supported on both the support plane and the upper end face of the hinge plate 11. Specifically, the front frame 1 further includes two side plates 12, the hinge plate 11 extends along the horizontal direction, the two side plates 12 are respectively connected to two sides of the hinge plate 11 along the vehicle width direction, and both the two side plates 12 are connected with the support assembly. It can be understood that the structural strength of the front frame 1 can be improved by constituting the truss type frame structure by the hinge plates 11, the two side plates 12, and the support members.

In the embodiment, the hinge plate 11 is provided with a connecting lug which is connected with the rear frame 4 through a pin; meanwhile, connecting holes are formed in the hinged plate 11 and the supporting assembly and are connected with the front balance weight 3 through bolts. Meanwhile, in order to further improve the structural strength of the front frame 1, the two side plates 12 are vertically and fixedly connected with the hinged plate 11 and the supporting component; in order to reduce the weight of the front frame 1, weight-reducing holes are provided in both side plates 12, and the shape, size and number of the weight-reducing holes are not limited herein.

Alternatively, as shown in fig. 1 and 2, the front weight 3 includes a first portion supported on the support plane and a second portion supported on the upper end surface of the hinge plate 11, the upper end surface of the first portion being disposed obliquely, and the upper end surface gradually decreasing in the distance from the ground in the advancing direction of the vehicle. It can be understood that the upper end surface of the first part is arranged to be an inclined surface, so that the requirement of the driver on the visual field can be met. In the present embodiment, the first portion and the second portion of the front counterweight 3 are of an integral structure, but in other embodiments, they may be of a separate structure.

In this embodiment, the weight of the first portion of the front counterweight 3 is greater than the weight of the second portion, and the first portion and the second portion form a stepped shape. It can be understood that, because the height of the support plane of the support assembly is lower than the upper end face of the hinged plate 11 in the vertical direction, and the first part of the front counterweight 3 is supported on the support plane and the second part is supported on the upper end face of the hinged plate 11, that is, the front frame 1 can form a support platform with a low front and a high rear to install the front counterweight 3, and the gravity center of the front counterweight 3 on the front frame 1 can move forward, so that the reasonable distribution of the load of the front frame 1 can be satisfied, and the phenomenon that the front frame 1 tilts up due to the insufficient load can be avoided.

Specifically, as shown in fig. 4, the front frame 1 further includes a lower base plate 10, the lower base plate 10 extends in a horizontal direction, and is disposed on two sides of the side plate 12 at an interval with the hinge plate 11 in a vertical direction, and both the side plates 12 are vertically connected to the lower base plate 10. In this embodiment, the lower plate 10 and the hinged plate 11 are oppositely arranged, and the lower plate 10 is also provided with the connecting lug, when the rear frame 4 is connected, the connecting lug of the rear frame 4 is placed between the hinged plate 11 and the connecting lug of the lower plate 10, and then the connection is performed through the pin, so that the connection is reliable. In other embodiments, the lower plate 10 may be connected to the rear frame 4 only through the hinge plate 11, or may not be provided.

Alternatively, as shown in fig. 3, the support assembly includes two support members 13 spaced apart in the vehicle width direction, the two support members 13 are each connected to the hinge plate 11, and the support plane includes upper end surfaces of the two support members 13. In this embodiment, the first portion of the front counterweight 3 is supported on the upper end surfaces of the two supporting members 13, and the two supporting members 13 are respectively connected perpendicularly to the two side plates 12. In other embodiments, the support member 13 may not be perpendicularly connected to the side plate 12.

Optionally, as shown in fig. 3 and 4, the front frame 1 further includes two webs 14, the two webs 14 are spaced apart and are connected to the hinge plate 11, and the two webs 14 are connected to the two supporting members 13 respectively. Specifically, to improve the structural stability of the front frame 1, two webs 14 are vertically connected to the hinged plate 11 and are disposed between the two side plates 12 at intervals, and the two webs 14 are vertically connected to the two supporting members 13, respectively. In this embodiment, the hinged plate 11 and the lower plate 10 are both U-shaped plates, and each of two sides of the two U-shaped plates is perpendicularly connected with the side plate 12 and the web plate 14. In other embodiments, the hinge plate 11 and lower plate 10 may have other shapes.

Specifically, as shown in fig. 3, the front frame 1 further includes a cross beam 16, the cross beam 16 is disposed between the two webs 14, and two ends of the cross beam 16 are respectively fixedly connected with the two webs 14. It can be understood that the structural stability of the front frame 1 can be further ensured by connecting the cross member 16 with the web plates 14 on both sides, and the bending and torsion resistance of the front frame 1 can be improved, thereby improving the service life of the front frame 1. The shape and number of the cross beams 16 are not limited herein, and can be adaptively selected according to different use requirements.

Preferably, the projection of the web 14 on a horizontal plane is Z-shaped. In this embodiment, in order to maintain the overall continuity of the web 14 and improve the reliability of the web 14, the web 14 is formed by bending integrally and includes a first vertical plate 141, a first connecting plate 142 and a second vertical plate 143 which are connected in sequence, the first vertical plate 141 is vertically connected with the hinge plate 11 and the lower base plate 10, the second vertical plate 143 is vertically connected with the supporting member 13, and two ends of the cross beam 16 are fixedly connected with the two first vertical plates 141 respectively. By the difference of the bending degree of the web 14, the distance between the two first risers 141 and the two second risers 143 can be changed, so that the length of the cross beam 16 can be changed as required to change the overall structure of the front frame 1. In another embodiment, the web 14 may be formed by welding the first riser 141, the first connecting plate 142, and the second riser 143 in this order, instead of being formed by integrally bending.

Optionally, as shown in fig. 3, the front frame 1 further includes a baffle 15, the baffle 15 is connected to the top ends of the two webs 14, and the baffle 15 and the two webs 14 enclose a first receiving groove for receiving the front coupler 2. Specifically, the baffle 15 is provided at a vertical interval from the support 13. It will be appreciated that the connection stiffness of the webs 14 on both sides is enhanced by the connection of the baffle 15 with the webs 14 on both sides, preventing the webs 14 from deforming under high stress. In this embodiment, the both sides of baffle 15 are connected perpendicularly and enclose with second riser 143 respectively and establish into first holding tank, are equipped with the trompil on baffle 15 simultaneously, can make things convenient for the free dismantlement of coupling connecting pin, have increased the convenience of maintenance.

Specifically, as shown in fig. 4, a coupler mounting seat 17 is disposed in the first receiving groove, the coupler mounting seat 17 is fixedly connected to the two webs 14, and the coupler mounting seat 17 is used for fixing the front coupler 2. It will be appreciated that the purpose of securing the front coupler 2 in the first receiving slot is achieved by the coupler mount 17. In this embodiment, the coupler mount pad 17 includes two sets of stoppers that the interval set up, places front hook 2 between two sets of stoppers to prevent front hook 2 from receiving the direction of advance round trip movement that the effect of pulling force was followed down, and can guarantee easy dismounting. In other embodiments, the coupler fixing seat 17 may have other structures, and only the front coupler 2 needs to be fixed.

Specifically, as shown in fig. 3 and 4, the front frame 1 further includes a front plate 18, the two support members 13 and the two webs 14 are connected to the front plate 18, the front plate 18 is provided with an opening 181, and the opening 181 communicates with the first receiving groove. It will be appreciated that the front plate 18 is capable of integrally connecting the two support members 13 to improve the structural strength of the front frame 1, and the opening 181 is provided in the front plate 18, so that the front coupler 2 can be protruded from the opening 181 to be connected to an external device when it is mounted in the first receiving groove. In this embodiment, the front plate 18 is vertically connected to the two second vertical plates 143 by welding, and is vertically connected to the two supports 13 by welding; the front frame 1 further comprises a first impact seat fixed to the side of the front plate 18 remote from the support 13. In other embodiments, the front plate 18 and the two second vertical plates 143 and the two supporting members 13 can be fixed in other manners.

Specifically, as shown in fig. 3, the front frame 1 further includes two reinforcing plates 19, the two webs 14 are located between the two reinforcing plates 19, and the reinforcing plates 19 are respectively fixedly connected with the front plate 18, the supporting member 13 and the webs 14. It can be understood that the tensile strength of the front plate 18 can be further improved by the reinforcing plate 19, and the front plate 18 is prevented from deforming during use to cause tearing of the welding seams between the two webs 14 and the two supporting members 13, so that the service life of the front frame 1 can be prolonged. In this embodiment, the reinforcing plate 19 is bent into an L-shape, and one side is welded to the front plate 18, the other side is welded to the supporting member 13, and the side is welded to the second vertical plate 143. In other embodiments, other shapes of the reinforcing plate 19 may be selected.

Specifically, as shown in fig. 4, the supporting member 13 includes a first supporting plate 131 and two vertical plates 132 connected to the first supporting plate 131, the two vertical plates 132 are disposed at intervals, the first supporting plate 131 and the two vertical plates 132 are both connected to the front plate 18 perpendicularly, the vertical plates 132 and the reinforcing plates 19 are disposed on two sides of the first supporting plate 131, the web 14 and the side plates 12 are both connected to the first supporting plate 131, and the supporting plane includes an upper end surface of the first supporting plate 131. It can be understood that the strut member 13 constitutes a box type structure by the first supporting plate 131 and the vertical plate 132, which can further improve the structural strength of the strut member 13, and thus can improve the overall strength of the front frame 1. In this embodiment, the second vertical plate 143 is connected with the first supporting plate 131 vertically, and the supporting member 13 further includes two connecting ribs 133 disposed between the two vertical plates 132 at intervals along the length direction of the vertical plates 132, the connecting ribs 133 are fixed to the first supporting plate 131 vertically, and both sides are welded to the two vertical plates 132 respectively, so that the structural stability of the box type supporting member 13 can be further ensured through the connecting ribs 133. In other embodiments, the number of the connecting ribs 133 may be increased or decreased according to different use requirements, or the connecting ribs 133 may not be provided.

Specifically, the projection of the first support plate 131 on the vertical plane is Z-shaped. In this embodiment, in order to maintain the overall continuity of the first support plate 131 and improve the reliability of the first support plate 131, the first support plate 131 is integrally formed by bending, and includes a first transverse plate 1311, a second connecting plate 1312 and a second transverse plate 1313 which are connected in sequence, the first transverse plate 1311 and the second connecting plate 1312 are both vertically connected to the side plate 12, the second vertical plate 143, the reinforcing plate 19, the front plate 18 and the two vertical plates 132 are all vertically connected to the second transverse plate 1313, and the support plane is the upper end surface of the second transverse plate 1313. The height difference between the second transverse plate 1313 and the first transverse plate 1311 can be changed according to the bending degree of the first supporting plate 131, so that the height difference between the second transverse plate 1313 and the hinge plate 11 can be adjusted to adapt to different front weights 3, meanwhile, the height of the first accommodating groove from the ground can also be adjusted, and the mounting height of the front coupler 2 can be changed to adapt to different coupler height requirements. The second connecting plate 1312 is used to connect a front drive axle, both ends of which are connected to the front wheels. In another embodiment, the first support plate 131 may be formed by welding the first horizontal plate 1311, the second connecting plate 1312, and the second horizontal plate 1313 in this order, without being integrally bent.

Alternatively, as shown in fig. 5 and 6, the coupler fixing structure 7 includes a mounting seat 71, the mounting seat 71 is connected to the rear frame 4, and a second receiving groove is formed in the mounting seat 71, and the second receiving groove is used for receiving the rear coupler 5. Specifically, the coupler fixing structure 7 further includes a first support plate 72, the first support plate 72 is disposed on the lower side of the rear coupler 5, and both ends of the first support plate 72 are connected to the mounting base 71, the first support plate 72 is provided with an adjusting block 73 in a protruding manner, and the adjusting block 73 can abut against the rear coupler 5. In this embodiment, the first supporting plate 72 includes a first side surface and a second side surface which are oppositely arranged, the first side surface and the second side surface are arranged in parallel and are both flat surfaces, the first side surface is convexly provided with an adjusting block 73, the first supporting plate 72 has a first installation state and a second installation state, and when the first supporting plate 72 is located at the first installation state, the adjusting block 73 is abutted to the rear coupler 5; when the first support plate 72 is in the second mounting state, the second side surface abuts the rear coupler 5. It can be understood that the height of the rear coupler 5 in the mounting seat 71 can be adjusted through the first support plate 72, and when the first side surface of the first support plate 72, on which the adjusting block 73 is convexly arranged, faces the rear coupler 5, the height of the rear coupler 5 can be increased under the action of the adjusting block 73; when the first supporting plate 72 is turned over and the second side face faces the rear coupler 5, the height of the rear coupler 5 can be reduced, the structure is simple, and the adjustment is convenient.

Specifically, the two ends of the first supporting plate 72 are detachably connected with the mounting base 71 through bolts, and when the first supporting plate 72 needs to be turned over to adjust the height of the rear coupler 5, the bolts only need to be unscrewed, so that the operation is simple and convenient. As for the height of adjustment, it is determined according to the thickness of the adjusting block 73. In this embodiment, the front coupler 2 and the rear coupler 5 are general couplers on the market, so as to ensure that the front coupler 2 and the rear coupler 5 can be butted with most cargo compartments, the front coupler 2 and the rear coupler 5 both include operation rods, the opening and closing of the couplers can be controlled by the operation rods, the operation rod of the rear coupler 5 is fixed on the mounting base 71, and as for the specific structures of the front coupler 2 and the rear coupler 5 and the working principles of the opening and closing, the operation rod is the prior art, and the description is omitted here. In other embodiments, the front coupler 2 and the rear coupler 5 may be other kinds of specific couplers, etc.

Optionally, the coupler fixing structure 7 further includes an adjusting plate and a second support plate 74 spaced apart from the first support plate 72, the second support plate 74 is supported on the lower side of the rear coupler 5 and both ends of the second support plate are connected to the mounting seat 71, and the adjusting plate can be located between the second support plate 74 and the mounting seat 71. It will be appreciated that the rear coupler 5 is supported by the first and

second support plates

72 and 74 on the underside of the rear coupler 5, while the height of the rear coupler 5 in the mounting socket 71 can be adjusted by adding an adjustment plate between the second support plate 74 and the mounting socket 71.

In this embodiment, the first support plate 72 and the adjusting plate are used in cooperation, the height of the rear coupler 5 in the mounting seat 71 is adjusted, and when the first support plate 72 is in the first mounting state, the adjusting plate is added between the second support plate 74 and the mounting seat 71 while the adjusting block 73 is abutted to the rear coupler 5, so that the height of the rear coupler 5 can be increased; when the first support plate 72 is in the second mounting state, the first support plate 72 is turned over to abut the second side surface against the rear coupler 5, and the adjustment plate between the second support plate 74 and the mounting seat 71 is removed, so that the height of the rear coupler 5 can be reduced. As for the height of the rear coupler 5, the height is determined according to the thickness of the adjusting block 73 and the thickness and the number of the adjusting plates, in this embodiment, in order to ensure that the rear coupler 5 can be kept horizontal in the horizontal direction, the thickness of the adjusting block 73 and the total thickness of the adjusting plates should be kept consistent. In other embodiments, the thickness of the adjusting block 73 and the total thickness of the adjusting plate may not be uniform, that is, the rear coupler 5 after adjusting the height may be in a state of being inclined to the horizontal plane.

Specifically, the coupler fixing structure 7 further includes a wear plate 76, and opposite sides of the wear plate 76 are abutted against the second support plate 74 and the rear coupler 5, respectively. It can be appreciated that the wear plate 76 can prevent the rear coupler 5 from directly contacting the second support plate 74, causing friction damage to the second support plate 74, which can improve the service life of the second support plate 74. In other embodiments, the wear plate 76 may not be provided, and a rubber pad or the like may be provided on the surface of the second support plate 74 that contacts the rear coupler 5, which may also prevent the second support plate 74 from being worn.

Preferably, as shown in fig. 5 and 6, the mounting seat 71 includes two oppositely disposed side beams 711, the coupler fixing structure 7 further includes a cover plate 75, the two side beams 711 are both connected with the cover plate 75, the cover plate 75 and the two side beams 711 are enclosed to form a second accommodating groove, and the two ends of the first supporting plate 72 are respectively connected with the two side beams 711. It will be appreciated that the side members 711 are disposed opposite to each other and connected by the cover plate 75 to define a second receiving groove for receiving the rear coupler 5. the distance between the side members 711 is determined according to the size of the rear coupler 5. In this embodiment, the two cover plates 75 are provided at intervals along the longitudinal direction of the side member 711, and the rear coupler 5 can be prevented from being disengaged from the second receiving groove from the vertical upward direction by the cover plates 75. In other embodiments, the number of cover plates 75 may be increased or decreased adaptively.

Specifically, each side beam 711 includes a vertical plate 7111 and a first plate 7112 and a second plate 7113 vertically connected to the same side of the vertical plate 7111, the first plate 7112 and the second plate 7113 extend along the horizontal direction, the first plate 7112 and the second plate 7113 are arranged at intervals along the vertical direction, two ends of the cover plate 75 are fixedly connected with the two vertical plates 7111 respectively, and two ends of the first supporting plate 72 are connected with the two second plates 7113 respectively. It can be understood that side member 711 can be formed into a half-box structure by fitting vertical plates 7111, first plates 7112, and second plates 7113, and not only can the overall rigidity of side member 711 be improved, but also the weight can be reduced as compared with the overall box structure. In this embodiment, the vertical plate 7111 and the first plate 7112, and the vertical plate 7111 and the second plate 7113 are connected by welding. In other embodiments, other connection methods such as bolt fixing connection and the like can also be adopted.

In order to further improve the structural strength of the side member 711, the side member 711 further includes a reinforcing rib 7114, and the reinforcing rib 7114 is connected to the vertical plate 7111, the first plate 7112, and the second plate 7113, respectively. In this embodiment, the reinforcing ribs 7114 extend in the vertical direction, and both ends of the reinforcing ribs 7114 are respectively connected to the first plate 7112 and the second plate 7113 perpendicularly, and the lateral sides of the reinforcing ribs 7114 are connected to the vertical plates 7111 perpendicularly. It can be appreciated that providing the ribs 7114 between the first plate 7112 and the second plate 7113 can further improve the structural stability of the side member 711, which can improve the service life of the side member 711. In this embodiment, two reinforcing ribs 7114 are provided, the two reinforcing ribs 7114 are arranged at intervals along the length direction of the side beam 711, and the reinforcing ribs 7114 are welded and fixed to the first plate 7112, the second plate 7113 and the vertical plate 7111. In other embodiments, the number of the reinforcing ribs 7114 can be increased or decreased as appropriate, or other fixing methods can be selected.

Specifically, as shown in fig. 5 and fig. 6, the mounting base 71 further includes two sets of limiting members 712, the two sets of limiting members 712 are disposed in the second accommodating groove and are respectively fixedly connected to the two risers 7111, and the two sets of limiting members 712 can abut against the rear coupler 5 to prevent the rear coupler 5 from moving relatively to the rear frame 4 along the backward direction. Preferably, each set of the limiting members 712 includes two limiting members 712, two limiting members 712 of the same set are fixed on the same vertical plate 7111 at intervals along the vertical direction, and one limiting member 712 includes a first portion and a second portion which are arranged at intervals along the advancing direction of the vehicle, that is, two first portions and two second portions are arranged on each vertical plate 7111 along the vertical direction, and each first portion and each second portion are respectively abutted with the rear coupler 5 from both sides of the advancing direction of the vehicle, so as to prevent the rear coupler 5 from moving in the advancing direction of the vehicle in the mounting seat 71. In this embodiment, the limiting member 712 is a limiting plate, and the limiting plate is welded to the vertical plate 7111. In other embodiments, the limiting member 712 may also be a bolt or other structures.

In this embodiment, as shown in fig. 5 and 6, the mounting seat 71 further includes a third connecting plate 713, and the third connecting plate 713 includes two opposite sides, one side of the third connecting plate 713 is vertically connected to the two side members 711, and the other side of the third connecting plate 713 is connected to the rear frame 4. In this embodiment, one side of the third connecting plate 713 is welded to the vertical plate 7111, the first plate 7112, and the second plate 7113, and the other side is connected to the rear plate 41 through bolts. Due to the limitation of the structural size of the mounting seat 71, when the height of the rear coupler 5 cannot meet the use requirement through the first supporting plate 72 and the adjusting plate, the height of the coupler fixing structure 7 on the rear plate 41 can be adjusted by changing the height of the bolt hole for connecting the third connecting plate 713 with the rear plate 41, and then the height of the rear coupler 5 can be changed to meet the use requirement.

Specifically, as shown in fig. 5 and 6, the mounting seat 71 further includes a second supporting plate 714, one end of the two side beams 711, which is far away from the third connecting plate 713, is vertically connected to the second supporting plate 714, and the second supporting plate 714 is provided with a notch, which is communicated with the second receiving groove. It will be appreciated that the side members 711 are fixedly connected at opposite ends thereof to the third connecting plate 713 and the second supporting plate 714, respectively, to further secure the structural strength of the mounting seat 71, and the second supporting plate 714 is provided with a notch for allowing the rear coupler 5 to extend therethrough for connection with an external cargo box when mounted in the second receiving groove. In this embodiment, the operating lever of the rear coupler 5 is pivotally connected to the second support plate 714, but in other embodiments, the operating lever of the rear coupler 5 may also be pivotally connected to the side member 711 or other structure.

Specifically, as shown in fig. 1 and 5, the coupler fixing structure 7 further includes a protection plate 77, the protection plate 77 extends along a length direction of the mounting seat 71, two sides of the protection plate 77 are fixedly connected to the two first plates 7112 through bolts, and two ends of the protection plate abut against the third connecting plate 713 and the second supporting plate 714. It can be understood that the cover plate 75 can be closed by the protective plate 77, so that the rear coupler 5 can be isolated from the outside in the vertical direction, and the influence of external structures on the installation and fixation of the rear coupler 5 can be avoided. In other embodiments, the cover plate 75 may be provided as a unitary structure without the use of the guard plate 77 for the purpose of protecting the rear coupler 5.

In this embodiment, as shown in fig. 5 and 6, the mounting base 71 further includes a second impact base 715, the second impact base 715 is fixedly connected to a side of the second supporting plate 714 away from the side beam 711, the second impact base 715 is U-shaped, two ends of the second supporting plate 74 are respectively connected to two free ends of the second impact base 715, a through hole is defined by the second impact base 715 and the second supporting plate 74, the rear coupler 5 is disposed through the through hole, and the adjusting plate can be located between the second supporting plate 74 and the second impact base 715. Specifically, the size of the opening of the second impact base 715 is smaller than the size of the notch of the second support plate 714, and it can be understood that the rear coupler 5 can shake in the working process, and the second impact base 715 can prevent the rear coupler 5 from causing impact damage to the second support plate 714 in the shaking process, so that the service life of the second support plate 714 can be prolonged. The purpose of adjusting the height of the rear coupler 5 in the mounting seat 71 is achieved by adding or subtracting an adjusting plate between the second impact seat 715 and the second supporting plate 74.

The tractor provided in the embodiment comprises a front frame 1 and a rear frame 4 which are hinged to each other to facilitate steering of the tractor, wherein a first part of a front counterweight 3 is supported on a supporting plane of the front frame 1, a second part of the front counterweight is supported on the upper end face of a hinged plate 11 of the front frame 1, the supporting plane is positioned on the front side of the upper end face of the hinged plate 11, and is positioned below the upper end face of the hinged plate 11, and the gravity center of the front counterweight 3 on the front frame 1 can move forwards due to the fact that the weight of the first part of the front counterweight 3 is larger than that of the second part of the front counterweight 3, so that reasonable distribution of load of the front frame 1 can be met, the phenomenon that the front portion of the front frame 1 is tilted due to insufficient load can be avoided, and meanwhile, the upper end face of the first part is set to be; the rear counter weight 6 is arranged on two sides of the rear frame 4 along the vehicle width direction, so that the rear coupler 5 can be structurally arranged, and the height of the rear coupler 5 can be adjusted through the first supporting plate 72 and the adjusting plate of the coupler fixing structure 7, so that different height requirements of the rear coupler 5 can be met. In this embodiment, as shown in fig. 1 and 2, the coupler fixing structure 7 is disposed at the rear side of the engine cover 8, so that it is ensured that the arrangement of other modules on the rear frame 4 is not affected, and the modification of the rear frame 4 and the entire vehicle is facilitated.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tractor, comprising:

the front car comprises a front car frame (1), wherein a front car coupler (2) is arranged in the front car frame (1), and the front car coupler (2) extends out of the front car frame (1) along the advancing direction of a car;

a front counterweight (3), said front counterweight (3) being supported on said front frame (1);

the rear frame (4) is hinged with the front frame (1), and the rear frame (4) comprises a rear plate (41) arranged at the tail end of the rear frame (4) along the advancing direction of the vehicle;

a coupler securing structure (7), the coupler securing structure (7) extending in a rearward direction of the vehicle and being connected to the rear plate (41);

and the rear coupler (5) is arranged in the coupler fixing structure (7) and partially extends out of the coupler fixing structure (7) along the retreating direction of the car.

2. The tractor according to claim 1, characterized in that said front frame (1) comprises:

the hinge plate (11), the hinge plate (11) is used for being hinged with the rear frame (4);

the supporting assembly is connected with the hinged plate (11), the supporting assembly is located on the front side of the hinged plate (11) in the advancing direction of the vehicle, the supporting assembly comprises a supporting plane located below the upper end face of the hinged plate (11), and the front counterweight (3) is supported on the supporting plane and the upper end face of the hinged plate (11) simultaneously.

3. The tractor according to claim 2, characterised in that the front counterweight (3) comprises a first portion supported on the support plane and a second portion supported on the upper end face of the hinged plate (11), the upper end face of the first portion being inclined, the upper end face gradually decreasing in distance from the ground in the direction of advance of the vehicle.

4. The tractor according to claim 2, characterized in that said support assembly comprises two supports (13) spaced apart in the vehicle width direction, both supports (13) being connected to said hinge plate (11), said support plane comprising the upper end faces of both supports (13).

5. The tractor according to claim 4, characterized in that said front frame (1) further comprises two webs (14), said two webs (14) being spaced apart and connected to said hinged plate (11), said two webs (14) being connected to said two supports (13), respectively.

6. The tractor according to claim 5, characterized in that the front frame (1) further comprises a baffle (15), the baffle (15) is connected with the top ends of the two webs (14), the baffle (15) and the two webs (14) enclose a first receiving groove for receiving the front coupler (2).

7. Tractor according to claim 1, characterised in that the coupler securing structure (7) comprises a mounting seat (71), which mounting seat (71) is connected to the rear plate (41), and in that a second receiving groove is provided in the mounting seat (71) for receiving the rear coupler (5).

8. The tractor according to claim 7, characterized in that the coupler fixing structure (7) further comprises a first support plate (72), the first support plate (72) is arranged on the lower side of the rear coupler (5) and both ends of the first support plate are connected with the mounting seat (71), an adjusting block (73) is arranged on the first support plate (72) in a protruding mode, and the adjusting block (73) can abut against the rear coupler (5).

9. Tractor according to claim 8, characterised in that the coupler securing structure (7) further comprises an adjustment plate and a second support plate (74) arranged at a distance from the first support plate (72), the second support plate (74) being supported on the underside of the rear coupler (5) and being connected with the mounting (71) at both ends, the adjustment plate being able to be located between the second support plate (74) and the mounting (71).

10. The tractor according to any of the claims 1 to 9, characterized in that it further comprises a rear counterweight (6), said rear counterweight (6) being supported to said rear frame (4).