CN220033943U

CN220033943U - Transport vehicle

Info

Publication number: CN220033943U
Application number: CN202321417223.9U
Authority: CN
Inventors: 何立恒
Original assignee: Hangzhou Hikrobot Co Ltd
Current assignee: Hangzhou Hikrobot Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-11-17
Anticipated expiration: 2033-06-06

Abstract

The utility model discloses a transport vehicle, such as a forklift, which comprises a first frame and a second frame which are separated; wherein the first frame includes a first axle disposed along a first direction and the second frame includes a second axle disposed along the first direction; then, along the second direction perpendicular to the first direction, one end of the second frame is provided with a pallet fork for forking the material taking box, and the other end of the second frame is in sliding connection with one end of the first frame in an extending way along the second direction, so that the distance between two axles respectively arranged on the first frame and the second frame is adjustable, and the lifting capacity of the carrying vehicle can be adjusted in a large range; the problem of current fork truck because the weight of lifting is fixed, but not adjust the inconvenient technique that causes on a large scale is solved to simple structure has improved the general level of fork truck adaptation different weight of lifting workbin greatly through the change wheelbase, thereby satisfies different transport scenes.

Description

Transport vehicle

Technical Field

The utility model relates to the technical field of carrying equipment, in particular to a carrying vehicle with a variable wheelbase.

Background

Transportation vehicles, such as fork lift trucks and the like, are commonly used to transport cargo.

In the related art, the fork truck is provided with a fork capable of lifting in front, the fork is used for forking and taking the tray, the tray is provided with cargoes such as a feed box, the fork is lifted to a certain height after forking and taking the tray, the tray is lifted away from the bottom surface, and then, the fork truck can carry the tray and cargoes on the tray to other places.

However, the lifting weight of the existing forklift is usually fixed and cannot be adjusted in a large range, which causes inconvenience in use.

Disclosure of Invention

In view of at least one aspect of the above technical problems, an embodiment of the present utility model provides a handling vehicle, where the handling vehicle includes a first frame and a second frame that are separately disposed, and the two frames are slidably connected along a direction perpendicular to an axle, so that a distance between axles on the two frames may be adjusted, and thus, a large-scale adjustment of a lifting weight of the handling vehicle may be achieved, thereby solving the technical problems described above.

An embodiment of the present utility model provides a transporting vehicle including:

the first vehicle frame comprises a first vehicle axle, wherein the first vehicle axle is arranged along a first direction, and first wheels are arranged at two ends of the first vehicle axle;

the second vehicle frame comprises a second vehicle axle, the second vehicle axle is arranged along the first direction, and second wheels are arranged at two ends of the second vehicle axle;

the first end of the second frame along the second direction is provided with a fork, the fork extends along the second direction, and the second direction is perpendicular to the first direction;

along the second direction, one end of the first frame is slidably connected with the second end of the second frame in a manner of extending along the second direction, so that the distance between the first axle and the second axle is adjustable.

In an embodiment, the first end of the first frame and the second end of the second frame are slidably connected by a rail mechanism extending along the second direction.

In one embodiment, the sliding rail mechanism comprises a first sliding rail and a second sliding rail which are installed in a plugging manner;

the first sliding rail extends from the end part of the first frame along the second direction, and the second sliding rail extends from the end part of the second frame along the second direction.

In an embodiment, the first sliding rail is disposed at two sides of the first frame opposite to the second direction, and the second sliding rail is disposed at two sides of the second frame opposite to the second direction;

the first roller is arranged on one side, facing the second slide rail, of the first slide rail, and the second roller is arranged on one side, facing the first slide rail, of the second slide rail; the rotating shafts of the first roller and the second roller are arranged along the first direction.

In an embodiment, the first frame is fixedly provided with a variable-pitch driving mechanism, the second frame is fixedly provided with a driven piece, and the variable-pitch driving mechanism is used for driving the driven piece to move along the second direction so as to enable the second frame to slide along the second direction relative to the first frame.

In an embodiment, the variable-pitch driving mechanism comprises a hydraulic oil cylinder, the driven piece comprises a piston rod extending along the second direction, one end of the piston rod is fixedly mounted on the second frame, and the other end of the piston rod is inserted into the hydraulic oil cylinder.

In an embodiment, the variable-pitch driving mechanism comprises a ball screw extending along the second direction, and the driven member comprises a screw nut mounted on the ball screw, and the screw nut is fixedly mounted on the second frame.

In an embodiment, the second frame includes a lifting mast disposed in a vertical direction, the lifting mast for vertically lifting the fork.

In an embodiment, the handling vehicle further comprises a ranging mechanism for measuring a spacing between the first axle and the second axle.

In an embodiment, the carrier vehicle further comprises a locking mechanism for locking the first frame and the second frame in the second direction.

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

the embodiment of the utility model provides a transport vehicle, such as a forklift, which comprises a first frame and a second frame which are separated; wherein the first frame includes a first axle disposed along a first direction and the second frame includes a second axle disposed along the first direction; then, along the second direction of perpendicular to first direction, be used for forking the pallet fork of taking out the case, the other end of second frame is the one end of first frame and extends ground sliding connection along the second direction to make the interval between two axletree that locate first frame and second frame respectively adjustable, can realize the wide range adjustment of transport vehicle lifting capacity like this.

That is, the carrier vehicle of the present embodiment is configured such that two frames each including one axle are separately provided, and the two frames separately provided are slidably connected in a direction perpendicular to the axles, so that the distance between the two axles can be adjusted in a large range by the sliding connection between the two frames, and the lifting weight of the carrier vehicle can be adjusted in a large range; therefore, the technical problem of inconvenient use of the existing forklift due to fixed lifting capacity and incapability of large-scale adjustment is solved, the structure is simple, the universal level of the forklift adapting to different lifting capacity feed boxes is greatly improved through the variable wheelbase, and different carrying scenes are met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a conventional forklift.

Fig. 2 is a schematic structural diagram of the carrying vehicle according to an embodiment of the utility model.

Fig. 3 is a schematic diagram of the explosive structure of fig. 2.

Wherein, the reference numerals:

10-first frame, 11-first wheel,

20-a second carriage, 21-a second wheel, 22-a fork, 23-a lifting gantry,

30-slide rail mechanism, 31-first slide rail, 32-second slide rail, 33-first roller, 34-second roller,

41-a hydraulic cylinder, 42-a piston rod,

x-first direction, Y-second direction.

Detailed Description

In order that the above-recited aspects may be better understood, a detailed description of exemplary embodiments of the utility model will be presented below with reference to the drawings, it being apparent that the described embodiments are only a subset of the embodiments of the utility model, and not all of the embodiments of the utility model, it being understood that the utility model is not limited by the exemplary embodiments described herein.

The front end of the whole vehicle frame of the existing forklift and other transport vehicles is provided with a lifting portal, a fork is vertically lifted and installed on the lifting portal, the lifting portal drives the fork to lift cargoes, and then the driving wheel of the whole vehicle frame drives the whole vehicle to walk, so that the transport operation of the cargoes is realized.

However, because the wheelbase of the front axle and the rear axle on the whole vehicle frame is fixed, the lifting capacity of the forklift or the maximum weight of the lifting bin of the forklift is fixed, and the lifting bin cannot be adjusted in a large range, so that the use is inconvenient.

The reason is that, referring to fig. 1, a simplified mechanical model of the whole vehicle frame can obtain g1=l1=gxl2, where G1 is the whole vehicle self weight, G is the weight of the bin, L1 is the wheelbase of the front and rear axles, and L2 is the distance from the center of gravity of the bin to the front axle; further, g=g1×l1/L2 can be obtained; it can be seen that since G1, L2 are all fixed values, G (i.e., the lifting weight of the forklift) is a fixed value; this results in a fork truck of a certain structural size being able to be handled only in a range of bins, which is not suitable when the weight of the bin exceeds the lifting weight of the truck, requiring a larger size of truck to be replaced, which is inconvenient for handling different weight bins.

Based on the above situation, the embodiment of the utility model provides a carrying vehicle, such as a forklift, which is provided with two frames separately, and then the two frames can be connected in a sliding manner along the direction perpendicular to the axles, so that the distance between the two axles respectively arranged on the two frames can be adjusted in a larger range, and the distance between the two axles can be adjusted by referring to the formula above, thus realizing the large-range adjustment of the lifting capacity of the forklift, being suitable for carrying work of bins with different weights, meeting different carrying requirements, having a simple structure and being convenient to use.

Fig. 2 is a schematic structural view of a carrying vehicle according to the present utility model, and referring to fig. 2, a carrying vehicle includes a first frame 10 and a second frame 20 that are separately disposed; the first frame 10 includes a first axle provided in a first direction X, and first wheels 11 are mounted at both ends of the first axle; the second frame 20 includes a second axle provided along the first direction X, and second wheels 21 are mounted at both ends of the second axle; wherein, the first end of the second frame 20 along the second direction Y is provided with a fork 22, the fork 22 extends along the second direction Y, and the second direction Y is perpendicular to the first direction X; along the second direction Y, one end of the first frame 10 is slidably connected to the second end of the second frame 20 in a manner extending along the second direction Y, so that a distance between the first axle and the second axle is adjustable.

In this embodiment, it is to be understood that the first direction is the direction of the axle, that is, the width direction of the transport vehicle, and the second direction is the front-rear direction of the transport vehicle.

Wherein, first frame and second frame are components of a whole that can function independently setting.

The first vehicle frame is provided with a first vehicle axle, two ends of the first vehicle axle are provided with first wheels, the second vehicle frame is provided with a second vehicle axle, and two ends of the second vehicle axle are provided with second wheels.

Wherein the first frame is a main frame, and the second frame is an auxiliary frame; then, a fork is mounted at one end of the second frame along the second direction (i.e. the direction perpendicular to the axle), and it can be understood that the fork can be vertically lifted relative to the second frame and used for lifting a tray or the like carrying the bin; the other end of the second frame along the second direction is in sliding connection with one end of the first frame along the second direction, and the sliding connection direction extends along the second direction; in this way, the two frames slide in the front-rear direction of the transport vehicle, so that the distance between the two axles provided on the two frames can be adjusted.

With reference to the discussion of simplifying the mechanical model of the whole vehicle frame, the distance between the two axles is adjustable, namely, the L1 in the formula is adjustable, so that the lifting capacity G of the transport vehicle can be adjusted.

Meanwhile, the sliding connection between the two frames of the embodiment can realize stepless and large-range adjustment of the distance between the two axles, so that the lifting weight of the carrying vehicle can be adjusted in a relatively large range, and the carrying requirements of the different-weight feed boxes can be met; in other words, through the adjustment of the distance between the two axles, the carrier vehicle can realize the coverage of three types of large, medium and small vehicles, the universality is greatly enhanced, and the use cost is reduced.

With respect to the sliding connection between the two frames described above, in one possible embodiment, the first frame 10 is slidably connected to the second frame 20 at one end thereof by a rail mechanism 30 extending in the second direction Y.

Specifically, referring to fig. 2 and 3, in one embodiment, the slide rail mechanism 30 includes a first slide rail 31 and a second slide rail 32 that are mounted in a plug-in manner; the first rail 31 extends from an end of the first frame 10 along the second direction Y, and the second rail 32 extends from an end of the second frame 20 along the second direction Y.

That is, the slide rail mechanism may specifically be in a plugging form extending along the second direction; the first sliding rail fixed on the first frame and the second sliding rail fixed on the second frame can be connected in a sliding mode along the second direction.

It will be appreciated that this manner of sliding connection by means of two sliding rails can improve the effective support between the connection points.

The first sliding rail 31 is disposed at two sides of the first frame 10 opposite to the second direction Y, and the second sliding rail 32 is disposed at two sides of the second frame 20 opposite to the second direction Y; the first roller 33 is mounted on the side of the first slide rail 31 facing the second slide rail 32, and the second roller 34 is mounted on the side of the second slide rail 32 facing the first slide rail 31; the rotation axes of the first roller 33 and the second roller 34 are disposed along the first direction X.

That is, on the one hand, a first sliding rail can be respectively arranged at the left side and the right side of the first frame, and meanwhile, a second sliding rail can be respectively arranged at the left side and the right side of the second frame; therefore, compared with a mode of arranging the whole plate type sliding rail along the width direction of the frame, the weight of the frame can be effectively reduced; on the other hand, the friction force between the two sliding rails is considered, and the rollers can be respectively arranged on the two sliding rails, so that the friction force can be effectively reduced by changing sliding friction into rolling friction, and the energy utilization rate is improved.

In addition, it can be appreciated that in another specific embodiment, the above-mentioned slide rail mechanism may also be implemented by a linear guide, that is, for example, one end of the first frame is provided with a linear guide extending along the second direction, and then, the second frame is fixedly connected with a guide rail slider, and the guide rail slider is slidably mounted on the linear guide, so that the sliding connection between the two frames can be implemented.

With respect to the above-mentioned power portion of the sliding connection between the two frames, in one possible embodiment, the first frame 10 is fixedly provided with a variable-pitch driving mechanism, the second frame 20 is fixedly provided with a driven member, and the variable-pitch driving mechanism is used for driving the driven member to move along the second direction Y so as to enable the second frame 20 to slide along the second direction Y relative to the first frame 10.

In this embodiment, the first frame may be a main frame, the first wheel is a driving wheel, and at this time, the second wheel may be a driven wheel; the variable-pitch driving mechanism can be fixedly arranged on the first frame, then, a driven piece is fixedly arranged on the second frame, and the variable-pitch driving mechanism adjusts the distance between the two axles or realizes the relative sliding between the two frames by driving the driven piece to move along the second direction.

Specifically, with continued reference to fig. 2 and 3, in one embodiment, the pitch drive mechanism includes a hydraulic ram 41, and the driven member includes a piston rod 42 extending in the second direction Y, one end of the piston rod 42 being fixedly mounted to the second frame 20, and the other end of the piston rod 42 being plugged into the hydraulic ram 41.

That is, the relative sliding between the two frames may be driven by the hydraulic ram.

Moreover, considering that the left side and the right side of the first frame are both provided with one first sliding rail, two hydraulic cylinders can be arranged, wherein one hydraulic cylinder corresponds to one first sliding rail, and the hydraulic cylinders can be arranged on the inner side of the first sliding rail.

Further, it will be appreciated that in another embodiment, the variable pitch drive mechanism comprises a ball screw extending in the second direction, and the driven member comprises a nut mounted to the ball screw, the nut being fixedly mounted to the second frame.

That is, the relative sliding between the two frames can be driven by the ball screw.

In a possible embodiment, the second frame comprises a lifting mast arranged in a vertical direction, the lifting mast being used for lifting the forks vertically.

In one possible embodiment, the handling vehicle further comprises a ranging mechanism for measuring a distance between the first axle and the second axle; the ranging mechanism may be, for example, an electro-optical ranging sensor, where the electro-optical ranging sensor includes a signal transmitting end fixed on the first axle and a signal reflecting end fixed on the second axle, and the signal transmitting end transmits a signal toward the signal reflecting end and receives a reflected signal, so that a ranging function can be implemented; of course, the ranging mechanism may also be a ranging sensor using other principles, which is not limited in this embodiment.

It can be appreciated that by measuring the distance between the two axles by the distance measuring sensor, it is possible to know whether the carrier vehicle is being adjusted in place during the course of the range adjustment.

In one possible embodiment, the carrier vehicle further includes a locking mechanism for locking the first frame and the second frame in the second direction; that is, the two frames are locked in the second direction by the locking mechanism, so that the power part (namely the variable-pitch drive mechanism) in sliding connection can be protected from damage to the variable-pitch drive mechanism caused by relative retraction of the two frames.

The locking mechanism comprises a locking buckle, the locking buckle can be arranged on any frame, and then a plurality of locking bulges or a plurality of locking grooves are arranged on the other frames at equal intervals along the second direction, so that the locking between the two frames along the second direction is realized through the buckling of the locking buckle and the locking bulges or the locking grooves.

The basic principles of the present utility model have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present utility model are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present utility model. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the utility model is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present utility model are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present utility model, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present utility model.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the utility model. Thus, the present utility model is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the utility model to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize that certain variations, modifications, alterations, additions, and sub-combinations thereof are intended to be included within the scope of the utility model.

Claims

1. A carrier vehicle, the carrier vehicle comprising:

a first frame (10) comprising a first axle arranged in a first direction (X), both ends of the first axle being provided with first wheels (11);

a second vehicle frame (20) comprising a second axle arranged along the first direction (X), and second wheels (21) mounted at both ends of the second axle;

wherein, a fork (22) is arranged at a first end of the second frame (20) along a second direction (Y), the fork (22) extends along the second direction (Y), and the second direction (Y) is perpendicular to the first direction (X);

along the second direction (Y), one end of the first frame (10) is slidably connected with the second end of the second frame (20) in a manner extending along the second direction (Y), so that the distance between the first axle and the second axle is adjustable.

2. The haulage vehicle of claim 1, wherein the first frame (10) is slidably connected at one end to the second end of the second frame (20) by a rail mechanism (30) extending in the second direction (Y).

3. The carrier vehicle according to claim 2, characterized in that the rail mechanism (30) comprises a plug-in mounted first rail (31) and second rail (32);

wherein the first slide rail (31) extends from an end of the first frame (10) in the second direction (Y), and the second slide rail (32) extends from an end of the second frame (20) in the second direction (Y).

4. A carrying vehicle according to claim 3, characterized in that the first slide rail (31) is provided on both sides of the first frame (10) with respect to the second direction (Y), and the second slide rail (32) is provided on both sides of the second frame (20) with respect to the second direction (Y);

a first roller (33) is mounted on the side of the first sliding rail (31) facing the second sliding rail (32), and a second roller (34) is mounted on the side of the second sliding rail (32) facing the first sliding rail (31); the rotation axes of the first roller (33) and the second roller (34) are arranged along the first direction (X).

5. The haulage vehicle according to claim 1, characterized in that the first frame (10) is fixedly provided with a variable-pitch drive mechanism, the second frame (20) is fixedly provided with a driven member, and the variable-pitch drive mechanism is used for driving the driven member to move along the second direction (Y) so as to enable the second frame (20) to slide along the second direction (Y) relative to the first frame (10).

6. The carrier vehicle of claim 5, wherein,

the variable-pitch driving mechanism comprises a hydraulic oil cylinder (41), the driven piece comprises a piston rod (42) extending along the second direction (Y), one end of the piston rod (42) is fixedly mounted on the second frame (20), and the other end of the piston rod (42) is inserted into the hydraulic oil cylinder (41).

7. The carrier vehicle of claim 5, wherein,

the variable-pitch drive mechanism comprises a ball screw extending along the second direction (Y), the driven piece comprises a screw nut mounted on the ball screw, and the screw nut is fixedly mounted on the second frame (20).

8. The handling vehicle according to claim 1, characterized in that the second carriage (20) comprises a lifting mast (23) arranged in a vertical direction, the lifting mast (23) being used for lifting the forks (22) vertically.

9. The haulage vehicle of claim 1, further comprising a ranging mechanism for measuring a spacing between the first axle and the second axle.

10. The haulage vehicle of claim 1, further comprising a locking mechanism for locking the first frame (10) and the second frame (20) in the second direction (Y).