CN112573444A

CN112573444A - Stacking vehicle

Info

Publication number: CN112573444A
Application number: CN202011416679.4A
Authority: CN
Inventors: 曾志聪
Original assignee: Shenzhen Clou Electronics Co Ltd
Current assignee: Shenzhen Clou Electronics Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-30

Abstract

The invention discloses a fork truck which comprises a chassis and a bearing assembly. The chassis comprises an underframe and a guide piece, wherein the guide piece is fixed on the underframe; the bearing assembly comprises a bearing part and a supporting part, the supporting part is connected to the guide part and can move in the vertical direction relative to the guide part, the bearing part comprises a bearing part and a roller, the bearing part is fixed on the supporting part, the roller is arranged in the bearing part in parallel, and the roller can roll in a fixed axis mode relative to the supporting part and is used for enabling the battery module to be loaded on the bearing part or unloaded from the bearing part along the rolling direction of the roller. The bearing component replaces an inserting arm, and the friction force between the battery module and the supporting part is converted into rolling friction through sliding friction by arranging the roller on the bearing component, so that the efficiency of loading and unloading the battery module is effectively improved.

Description

Stacking vehicle

Technical Field

The invention relates to the field of carrying tools, in particular to a fork truck.

Background

Among the energy storage system, for improving energy density, the cost is practiced thrift, the size and the weight of battery module are often great, the manual handling of being not convenient for. In the related art, a forklift is often used to carry the battery module, but the battery module is not convenient to unload due to the large friction between the insertion arms of the forklift and the battery module.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a fork truck which can effectively improve the loading and unloading efficiency of a battery module.

An embodiment of the present invention provides a forklift, including:

the chassis comprises an underframe and a guide piece, and the guide piece is fixed on the underframe;

the bearing assembly comprises a bearing part and a supporting part, the supporting part is connected to the guide piece and can move in the vertical direction relative to the guide piece, the bearing part comprises a bearing piece and rollers, the bearing piece is fixed on the supporting part, the rollers are arranged in the bearing piece in parallel, and the rollers can roll in a fixed axis relative to the supporting piece.

The fork truck provided by the embodiment of the invention at least has the following technical effects:

through set up the cylinder on bearing the thing, change the frictional force between battery module and the supporting part for rolling friction by sliding friction, effectively improved the efficiency of loading and unloading battery module.

According to some embodiments of the invention, the carrier is detachably connected to the support.

According to some embodiments of the forklift, the bearing part further includes a first limiting member, and the two ends of the bearing member in the axial direction of the drum are respectively provided with one first limiting member, or the two ends of the bearing member in the axial direction of the drum and one side of the bearing member in the rolling direction of the drum are respectively provided with one first limiting member, and the first limiting members are used for limiting the position of the battery module on the bearing member.

According to the fork truck of some embodiments of the present invention, a buffer member is disposed on a side surface of the first limiting member close to the roller, and the buffer member is used for protecting the battery module.

According to some embodiments of the forklift, the bearing part further includes a second limiting member detachably disposed at a side of the bearing part where the first limiting member is not disposed, and the second limiting member is capable of limiting the battery module on the drum together with the first limiting member.

According to some embodiments of the invention, the chassis further comprises a running part, the running part comprises a front wheel and a rear wheel, the front wheel is arranged on one side of the underframe below the bearing component, the rear wheel is arranged on the other side of the underframe, the front wheel is a directional wheel, and the rear wheel is a universal wheel.

According to the fork truck of some embodiments of the invention, the distance between the side of the carrier away from the guide and the guide is greater than the distance between the side of the chassis on the side below the carrier assembly and the guide.

According to some embodiments of the invention, the fork lift truck further comprises a driving part, the driving part is fixed on the underframe, and the output end of the driving part is fixed on the supporting part and used for driving the supporting part to move up and down along the guide piece.

According to some embodiments of the forklift, the driving part is an electric driving hydraulic cylinder.

According to the fork truck of some embodiments of the invention, the driving part is a pedal hydraulic cylinder.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a fork lift truck according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a fork lift truck according to another embodiment of the present invention;

FIG. 3 is a left side view of the fork lift truck of an embodiment of the present invention;

fig. 4 is a schematic view of the forklift unloading the battery module at the out-door container according to the embodiment of the invention;

fig. 5 is a schematic view of the forklift unloading the battery modules at the aisle container according to the embodiment of the invention.

Reference numerals: the load bearing assembly 100, the load bearing part 110, the load bearing part 111, the roller 112, the first limiting member 113, the second limiting member 114, the support part 120, the chassis 200, the underframe 210, the guide member 220, the rear wheel 231, the front wheel 232, the armrest frame 240, the counterweight 250, the container 300, the battery frame 310 and the battery module 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

A fork lift truck according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

A fork lift truck according to some embodiments of the present invention includes a chassis 200 and a load bearing assembly 100.

The chassis 200 includes a bottom frame 210 and a guide 220, and the guide 220 is fixed to the bottom frame 210. The bearing assembly 100 comprises a bearing part 110 and a supporting part 120, the supporting part 120 is connected to the guide part 220 and can move in the vertical direction relative to the guide part 220, the bearing part 110 comprises a bearing part 111 and a roller 112, the bearing part 111 is fixed on the supporting part 120, the roller 112 is arranged in parallel on the bearing part 111, and the roller 112 can perform fixed-axis rolling relative to the supporting part, so that the battery module 400 can be loaded on the bearing part 111 or unloaded from the bearing part 111 along the rolling direction of the roller 112.

Specifically, as shown in fig. 1, the chassis 200 includes a bottom frame 210 and a guide 220, and the bottom frame 210 provides support for the guide 220 and the carrying assembly 100, so that the shape thereof may be a square, an "H" or the like, as long as there is enough area for fixing each component to be fixed on the bottom frame 210, which is not listed here. The guide member 220 may have a vertical plate shape, or a rod shape, etc., which has a good bending resistance and is not significantly bent under a large enough bending moment, which depends on the weight of the battery module 400 during actual use. The guide member 220 is fixed to the base frame 210 by means of insertion, welding, or fastening, and the like, and the two members do not move relative to each other.

The supporting assembly 100 includes a supporting portion 120 and a supporting portion 110, the supporting portion 120 may be an insertion arm of a conventional forklift, or may be a plate, and the supporting portion 120 has a better rigidity, and can ensure that no significant bending deformation occurs when bearing the gravity of the battery module 400 to be loaded. The connection relationship between the supporting portion 120 and the guiding member 220 may be a socket connection, or a sliding connection through a sliding slot, etc., and it can be understood that the specific shape of the supporting portion 120 can be adaptively adjusted according to the shape of the guiding member 220 and the connection relationship between the guiding member 220 and the supporting portion 120. The supporting part 110 includes a supporting member 111, and the supporting member 111 is fixed on the supporting part 120 by welding, clamping, or fastening, so that the supporting part 120 can drive the supporting member 111 to move together in the moving process. The supporting member 111 mainly serves to support the battery module 400, and in order to facilitate the assembly and disassembly of the battery module 400, a plurality of rollers 112 are disposed on a side surface of the supporting member 111 contacting the battery module 400, the rollers 112 are distributed in parallel, and the rollers 112 may be parallel to each other or staggered with each other, for example, a plurality of rows of rollers 112 are disposed on the supporting member 111, two rollers 112 are disposed in the same row, and the two rollers 112 are arranged in an "eight" shape.

In the energy storage system, an outward opening type container 300 or a through-passage type container 300 is generally used, a battery rack 310 is disposed in the containers 300, a plurality of storage compartments are disposed on the battery rack 310, and the stacker needs to move the battery module 400 to a corresponding position so that a worker can unload the battery module 400 to a target storage compartment.

In a specific use process, the height of the supporting part 120 is first adjusted appropriately to make the carrier 111 at a suitable height, and then the loading operation of the battery module 400 is started. After the battery module 400 is pushed by a worker to the upper bearing part 111, the lower bottom surface of the battery module 400 is tangent to the side surface of the roller 112, in the later loading process, rolling friction can occur between the battery module 400 and the roller 112, sliding friction between the battery module 400 and the roller 112 in the related technology is replaced, the thrust required by loading the battery module 400 is reduced, meanwhile, the bottom surface of the battery module 400 is effectively protected, the battery module 400 is prevented from being scratched in the loading process, and the rollers 112 are distributed in parallel, so that the effect of guiding the battery module 400 to move can be achieved.

After the battery module 400 is transported to a target position such as a pallet by the forklift, the height of the support 120 is adjusted to make the upper surface of the carrier 111 equal to the lower surface of the target cell or the upper surface of the carrier 111 slightly higher than the lower surface of the target cell, and then the unloading operation of the battery module 400 is started. Similar to the loading process, the worker only needs to apply a small force to the battery module 400. It can be understood that, through such a design, the loading and unloading efficiency of the battery module 400 is effectively improved, while the lower bottom surface of the battery module 400 is protected to a certain extent.

Further, it has the one deck blotter to wrap up on cylinder 112, and the blotter adopts materials such as Polyurethane (PU) that have certain resilience to make, and when battery module 400 contacted with cylinder 112, the blotter can effectively avoided battery module 400 to take place because of the condition that collides with and lead to lower surface damage at the removal in-process.

In some embodiments of the present invention, the carrier 111 is detachably connected to the supporting portion 120.

Specifically, as shown in fig. 1 and 2, the carrier 111 is connected to the supporting portion 120 by a fastener or a snap-fit connection. It is understood that the carriers 111 can be divided into various types and sizes, i.e., the length, thickness and width of different carriers 111 can be different, and the material used for different carriers 111 can also be different. Meanwhile, the rollers 112 disposed on the carrier 111 are also adapted according to the change of the carrier 111.

In actual use, the forklift may need to carry battery modules 400 of different specifications, the battery modules 400 of different specifications have different sizes and different weights, which makes different requirements on the size of the bearing member 111 and the allowable load. Therefore, when transporting the battery modules 400 with different specifications, the operator can flexibly replace the adaptive bearing member 111 according to the actual situation. In addition, when the bearing part 111 is damaged, the bearing part 111 can be replaced more easily due to the detachable design, and the difficulty of later maintenance is effectively reduced.

In addition, the design that the bearing part 111 is detachable enables the forklift to be better adapted to the requirements of different types of containers 300 in different energy storage systems.

For example, when the energy storage system employs the outward opening type container 300, the carrying portion 110 is selected such that the rolling direction of the rollers 112 is the same as the forward and backward directions of the forklift. As shown in fig. 4, when unloading the battery module 400, after the worker adjusts the height of the supporting portion 120 while ensuring that the chassis 200 does not displace, the worker applies an acting force to the battery module 400 in the forward direction of the forklift, so as to unload the battery module 400 into the corresponding storage cell in the battery rack 310.

When the energy storage system adopts the aisle-type container 300, the bearing part 110 needs to be replaced, and the bearing part 110 with the rolling direction of the roller 112 perpendicular to the advancing and retreating directions of the fork-lift truck is selected. When the battery module 400 is loaded, the worker needs to operate the stacker from the side. As shown in fig. 5, when unloading the battery module 400, similar to the outward opening type container 300, it is required to ensure that the chassis 200 is not displaced, and adjust the height of the supporting portion 120 so that the upper surface of the bearing member 111 is slightly higher than the lower surface of the target storage grid or is flush with the lower surface of the target storage grid. Then, the worker applies an acting force perpendicular to the advancing direction of the forklift to the battery module 400, and the direction of the acting force is changed according to the position of the target storage cell.

It can be understood that the design of the detachable bearing member 111 not only enables the forklift to transport the battery modules 400 with more specifications, but also enables the worker to unload the battery modules 400 in the aisle-type container 300 in a narrow space by simple operation.

In some embodiments of the present invention, the bearing part 110 further includes a first limiting member 113, two ends of the bearing member 111 in the axial direction of the roller 112 are respectively provided with one first limiting member 113, or two ends of the bearing member 111 in the axial direction of the roller 112 and one side of the bearing member 111 along the rolling direction of the roller 112 are respectively provided with one first limiting member 113, and the first limiting members 113 are used for limiting the position of the battery module 400 on the bearing member 111.

Specifically, as shown in fig. 1, the first limiting member 113 is in a plate shape, and the length of the first limiting member 113 is adapted to the size of the carrier 111, that is, the length of the first limiting member 113 disposed at the long side of the carrier 111 is longer than the length of the first limiting member 113 disposed at the short side of the carrier 111, and the width of the first limiting member 113 is related to the specification of the battery module 400 that needs to be transported by the forklift at this time, for the battery module 400 with a larger thickness, the width of the first limiting member 113 is wider, so as to ensure that the battery module 400 does not roll over.

Since the mounting and dismounting direction of the battery module 400 varies depending on the situation, the position of the first stopper 113 on the carrier 111 also varies. When the battery module 400 is assembled and disassembled from only one direction, the first limiting members 113 are disposed on two sides of the bearing member 111 perpendicular to the rolling direction of the roller 112 and one side of the bearing member 111 along the rolling direction of the roller 112, and when the battery module 400 is assembled and disassembled from two opposite directions, the first limiting members 113 are disposed on two sides of the bearing member 111 perpendicular to the rolling direction of the roller 112. It can be understood that the positions, i.e. the number, of the first limiting members 113 can be adaptively adjusted according to actual requirements.

Through set up first locating part 113 around bearing piece 111, can effectively carry on spacingly to the battery module 400 on bearing piece 111, simultaneously, set up first locating part 113 in cylinder 112 both sides can play the effect of direction in the in-process of loading and unloading battery module 400.

In some embodiments of the invention, a buffer member is disposed on a side of the first position-limiting member 113 close to the roller 112, and the buffer member is used for protecting the battery module 400.

Specifically, the buffer member is made of a resilient material such as rubber, and may be a buffer rubber strip or a rubber pad, and is fixed on the side of the first limiting member 113 facing the roller 112 by means of adhering, binding, and the like. When the battery module 400 contacts the first limiting member 113, the buffer member can effectively prevent the battery module 400 from surface damage due to collision.

In some embodiments of the invention, the supporting portion 110 further includes a second limiting member 114, the second limiting member 114 is detachably disposed at a side surface of the supporting portion 111 where the first limiting member 113 is not disposed, and the second limiting member 114 and the first limiting member 113 together can limit the battery module 400 on the drum 112.

Specifically, as shown in fig. 1, the second limiting member 114 may be in the shape of a plug, or in the shape of a plate similar to the first limiting member 113, and the connection relationship between the second limiting member 114 and the bearing member 111 is adaptively adjusted according to the shape of the second limiting member 114, and when the second limiting member 114 is a plug, an insertion ring is welded on the bearing member 111, or an insertion hole is formed for connecting the second limiting member 114; when the second position-limiting member 114 is plate-shaped, it is connected to the carrier 111 by a fastener or a rotation pair. The positions of the second limiting members 114 are adaptively adjusted according to the positions and the number of the first limiting members 113, and when the first limiting members 113 are disposed on two sides of the bearing member 111 perpendicular to the rolling direction of the roller 112, the second limiting members 114 are disposed on two sides of the bearing member 111 along the rolling direction of the roller 112; when the first limiting members 113 are disposed on two sides of the bearing member 111 perpendicular to the rolling direction of the roller 112 and one side of the bearing member 111 along the rolling direction of the roller 112, the second limiting members 114 are disposed on the side of the bearing member 111 along the rolling direction of the roller 112 where the first limiting members 113 are not disposed.

It should be understood that, if the second limiting member 114 is connected to the bearing member 111 through a rotating pair, there is a fastening slot or a plug-in type connecting structure between the first limiting member 113 and the second limiting member 114 disposed on two sides of the roller 112, and when the battery module is used, the second limiting member 114 does not need to be completely detached, and only the second limiting member 114 is connected to the first limiting member 113, and the second limiting member 114 rotates around the rotating shaft of the rotating pair until the battery module 400 can be loaded on the bearing member 111 from the position where the second limiting member 114 is disposed, or detached from the bearing member 111.

Through setting up detachable second locating part 114, can be in handling, restrict battery module 400 on bearing spare 111 all the time, effectively avoided the unexpected circumstances of landing of battery module 400 to take place, improved the security of high car of heap.

In some embodiments of the present invention, the chassis 200 further comprises a driving part, the driving part comprises a front wheel 232 and a rear wheel 231, the front wheel 232 is disposed on one side of the chassis 210 below the bearing assembly 100, the rear wheel 231 is disposed on the other side of the chassis 210, the front wheel 232 is a directional wheel, and the rear wheel 231 is a universal wheel.

Specifically, as shown in fig. 1, the chassis 200 further includes a traveling part for moving the forklift, and the traveling part includes front wheels 232 and rear wheels 231, wherein when the number of the front wheels 232 is one, the number of the rear wheels 231 is at least two; in contrast, when the rear wheels 231 are one in number, the front wheels 232 are at least two in number. The front wheels 232 and the rear wheels 231 are located as the name implies, the front wheels 232 are disposed on a side of the chassis 210 below the carrier assembly 100, which is also a front side of the forklift when the forklift advances, and the rear wheels 231 are disposed on a side of the chassis 210 where the front wheels 232 are not disposed, which is a rear side of the forklift. Meanwhile, an armrest frame 240 is provided above one side of the rear wheel 231, the armrest frame 240 is fixed to the bottom frame 210 by means of insertion, welding, or the like, and a worker changes the advancing direction of the forklift using the armrest frame 240 when using the forklift.

Here, the front wheel 232 is a directional wheel, and the rear wheel 231 is a universal wheel, it can be understood that, compared to the design that the front wheel 232 is a universal wheel and the rear wheel 231 is a directional wheel, in such a design, when a worker applies a certain force to the armrest frame 240, the forklift can receive a larger steering torque, that is, the worker can adjust the moving direction of the forklift more easily.

In some embodiments of the present invention, the distance between the side of the carrier 111 away from the guide 220 and the guide 220 is greater than the distance between the side of the bottom frame 210 below the carrier assembly 100 and the guide 220.

Specifically, as shown in fig. 3, with the side of the bottom frame 210 provided with the front wheels 232 as a reference, the bearing members 111 protrude one section toward the advancing direction of the forklift relative to the front end of the side of the bottom frame 210, and it can be understood that, in such a design, when the battery module 400 is loaded in the open-door container 300, as shown in fig. 4, the front end of the bottom frame 210 abuts against the door frame of the container 300, and the protruding bearing members 111 already protrude into the container 300 and are located closer to the battery rack 310. In the outward opening type container 300, the battery rack 310 is arranged inward, and usually has a certain distance from the outside, and through the design, the problem that the worker is difficult to unload when facing the outward opening type container 300 is well solved, and the unloading efficiency of the battery module 400 is effectively improved.

Further, in order to balance the weight of the bearing member 111 protruding from the one section while reducing the size of the base frame 210, a weight member 250 is provided at the portion where the rear wheel 231 and the handle frame 240 are provided, and the weight of the weight member 250 can be adaptively adjusted according to the protruding length and weight of the bearing member 111.

When the support 120 is moved by a hydraulic driver, the counterweight 250 may be a related component of the hydraulic driver, such as a hydraulic pump and/or a battery for supplying electric power to the hydraulic driver. It should be understood that the weight member 250 may be a simple weight, or a driving motor, etc., that is, the specific composition of the weight member 250 can be adjusted adaptively according to the driving manner of the supporting portion 120.

Further, a certain space exists between the guide 220 and the armrest frame 240, and such a design does not negatively affect the balance of the forklift, and simultaneously reduces the size of the bearing member 111 on the premise of ensuring the extension length of the bearing member 111, thereby reducing the weight of the bearing member 111.

In some embodiments of the present invention, a driving part is further included, the driving part is fixed to the bottom frame 210, and an output end of the driving part is fixed to the supporting part 120 for driving the supporting part 120 to move up and down along the guide 220.

Specifically, the driving portion may be a hydraulic driving member, or a screw assembly driven by a motor, and the output end of the driving portion may be a rod alone, or a complex combined structure of a rod and a chain. The driving part is used for providing a power source for the supporting part 120 to drive the bearing part 110 to move up and down, and the output end of the driving part is used for directly applying acting force to the supporting part 120.

For example, the driving part is a screw rod assembly driven by a motor, and the screw rod is an output end of the driving part, one end of the screw rod is directly fixed to the supporting part 120, and under the operation of the driving part, the screw rod can be extended or retracted smoothly, so that the supporting part 120 and the bearing part 110 are lifted and lowered.

In addition, the driving part may also be a hydraulic driving part, and the output end of the driving part is a combined structure of a rod and a chain. The sprocket is fixed to one end of a hydraulic rod of the driving unit and can perform fixed-axis rotation with respect to the hydraulic rod, and a chain is engaged with the sprocket, and one end of the chain is fixed to the base frame 210 and the other end thereof is fixed to the supporting portion 120. When the supporting part 120 needs to drive the bearing part 110 to move upwards, the hydraulic rod in the driving part extends out to push the chain wheel upwards, the chain wheel is like a movable pulley, and in the process of the chain wheel rising, one end of the chain fixed on the supporting part 120 moves upwards at the same time, and the moving speed is twice of the moving speed of the chain wheel, so that the supporting part 120 and the bearing part 110 move upwards. When the supporting portion 120 needs to drive the bearing portion 110 to move downwards, the hydraulic rod in the driving portion retracts and drives the chain wheel to move downwards, and one end of the chain fixed to the supporting portion 120 moves downwards at a speed twice as fast as the moving speed of the chain wheel in the process, so that the supporting portion 120 and the bearing portion 110 move downwards. It can be understood that this design can double the moving range of the lifting unit when the length of the hydraulic rod of the driving unit is fixed, i.e. effectively increase the maximum height that the carrying unit 110 can reach.

In some embodiments of the invention, the drive section is an electric drive cylinder.

Specifically, the driving part is a hydraulic cylinder, and the up-and-down movement of the supporting part 120 and the bearing part 110 is achieved by hydraulic pressure. The hydraulic pump is the hydraulic component who provides the pressurized liquid for hydraulic transmission in the pneumatic cylinder, and the electric hydraulic pump is adopted here, under the energy supply of battery, can be with the hydraulic energy of electric energy conversion liquid, conversion efficiency is fast and steady.

In addition, when the carrier 111 protrudes from the foremost end of the side of the underframe 210 toward the front of the forklift, the weight 250 provided at the rear wheel 231 of the underframe 210 may be replaced by a battery, a hydraulic pump, etc., which perform their respective tasks and balance the center of gravity of the forklift.

In some embodiments of the invention, the driving part is a foot-operated hydraulic cylinder.

Specifically, the driving part is a hydraulic cylinder, and the up-and-down movement of the supporting part 120 and the bearing part 110 is achieved by hydraulic pressure. The hydraulic pump is the hydraulic component that provides the pressurized liquid for hydraulic transmission in the pneumatic cylinder, and foot-operated hydraulic pump is adopted here, and the pneumatic cylinder simultaneously including pressure release handle and footboard, and the staff can make supporting part 120 drive the portion 110 that bears the weight of and move up together through continuous pedal, through the pressure release handle, makes supporting part 120 drive the portion 110 that bears the weight of and move down together. Compared with an electric driving hydraulic cylinder, the pedal type hydraulic cylinder is cheaper in price, and the cost is saved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The fork lift truck, its characterized in that includes:

2. The forklift of claim 1, wherein the carrier is removably connected to the support.

3. The forklift according to claim 1, wherein the supporting part further includes first limiting members, and one of the first limiting members is provided at each of both ends of the supporting member in the axial direction of the drum, or one of the first limiting members is provided at each of both ends of the supporting member in the axial direction of the drum and one side of the supporting member in the rolling direction of the drum, and the first limiting members are used to limit the position of the battery module on the supporting member.

4. The forklift of claim 3, wherein a buffer is disposed on a side of the first stopper close to the roller, and the buffer is used for protecting the battery modules.

5. The forklift according to claim 3, wherein the supporting part further comprises a second limiting member detachably disposed at a side of the supporting member where the first limiting member is not disposed, the second limiting member being capable of limiting the battery module on the drum together with the first limiting member.

6. The forklift of claim 1, wherein the chassis further comprises a traveling part, the traveling part comprises a front wheel and a rear wheel, the front wheel is arranged on one side of the chassis below the bearing assembly, the rear wheel is arranged on the other side of the chassis, the front wheel is a directional wheel, and the rear wheel is a universal wheel.

7. The forklift of claim 1, wherein a distance between a side of the carriage remote from the guide and the guide is greater than a distance between a side of the chassis on a side below the carriage assembly and the guide.

8. The forklift according to claim 1, further comprising a driving part fixed to the undercarriage, wherein an output end of the driving part is fixed to the supporting part for driving the supporting part to move up and down along the guide.

9. The forklift of claim 8, wherein the drive section is an electric drive hydraulic cylinder.

10. The forklift of claim 8, wherein the driving portion is a foot-operated hydraulic cylinder.