Forklift

Abstract

A forklift, relating to the technical field of warehousing logistics. The forklift comprises a frame (1), a first support leg (2) and a gantry (3), wherein the first support leg is detachably mounted on the frame, and castors (21) are mounted at the bottom of the first support leg; the gantry is detachably mounted on the first support leg, and forks (32) are transversely provided on the side of the gantry away from the frame; the frame is provided with a first connection portion, and the first support leg is detachably mounted on the first connection portion on the frame; and the gantry is provided with a second connection portion (31), the gantry is detachably mounted on the first support leg by means of the second connection portion, and the connection position of the gantry and the first support leg is close to the frame. The solution is applicable to application scenarios for the production of forklifts, and solves the problem of a support leg being inconvenient to replace.

Description

A forklift Technical Field

[0001] The present application relates to the technical field of warehousing and logistics, and in particular to a forklift. Background Art

[0002] To achieve greater stability, durability, reliability, and impact resistance, forklifts typically consist of a frame, outriggers, and mast, all welded together to form a one-piece structure. Maintenance on forklifts may require removing components, such as outriggers, from this one-piece welded structure and then re-welding them, making it inconvenient to replace the outriggers.

[0003] Summary of the Invention

[0004] In view of this, an embodiment of the present application provides a forklift capable of improving the replaceability of legs.

[0005] To achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] An embodiment of the present application provides a forklift, comprising: a frame, a first leg and a mast; the first leg is detachably mounted on the frame, a caster is mounted on the bottom of the first leg, the mast is detachably mounted on the first leg, and a fork is transversely provided on a side of the mast away from the frame; wherein, a first connecting portion is provided on the frame, and the first leg is detachably mounted on the first connecting portion of the frame; a second connecting portion is provided on the mast, and the mast is detachably mounted on the first leg via the second connecting portion, and the connection position between the mast and the first leg is close to the frame.

[0007] According to a specific implementation of the present application, the second connecting part on the portal frame includes a second upper connecting part and a second lower connecting part spaced apart in an upper and lower manner; the second upper connecting part is located above the second upper connecting part; the first position of the first leg is detachably connected to the second upper connecting part on the portal frame; the second position of the first leg is detachably connected to the second lower connecting part on the portal frame.

[0008] According to a specific implementation of the present application, the first position on the first leg is detachably connected to the second upper connecting portion on the portal frame through a first bolt; the second position on the first leg is detachably connected to the second lower connecting portion on the portal frame through a second bolt; wherein, the first bolt is horizontally arranged and the second bolt is vertically arranged.

[0009] According to a specific implementation of the present application, the first connecting portion on the frame includes a first upper connecting portion and a first lower connecting portion spaced apart from each other, and the first upper connecting portion is located above the first lower connecting portion; the frame is connected to the first leg through the first upper connecting portion and the first lower connecting portion.

[0010] According to a specific implementation of the present application, a first connecting member is provided at the first position of the first leg, and the first connecting member is detachably connected to the second upper connecting portion on the door frame through the first bolt; the vehicle frame is connected to the first connecting member on the first leg through the first upper connecting portion.

[0011] According to a specific implementation of the present application, a limiting structure is further provided on one side of the vehicle frame close to the portal frame, and there is a gap between the second upper connecting portion of the portal frame and the main body of the portal frame, and the limiting structure is located in the gap.

[0012] According to a specific implementation of the present application, the first leg is replaced by a second leg; wherein, the second leg includes: a walking leg and a telescopic leg; the walking leg is detachably connected to the frame, and a caster is installed at the bottom of the walking leg; the telescopic leg is slidably provided on the walking leg; and the door frame is detachably installed on the telescopic leg.

[0013] According to a specific implementation of the present application, the telescopic leg includes a sliding seat and a vertical support vertically arranged on the sliding seat, and the sliding seat can be slidably arranged on the walking leg; the gantry is connected to the vertical support; or the gantry is connected to the sliding seat and the vertical support.

[0014] According to a specific implementation of the present application, the first leg is replaced by a third leg, and the connection position between the portal frame and the third leg is far away from the vehicle frame.

[0015] According to a specific implementation of the present application, the third leg includes a walking leg and a bracket vertically fixedly connected to the walking leg; the first end of the walking leg is connected to the frame, and a caster is installed at the bottom of the second end; the bracket is vertically connected at a position close to the second end of the walking leg; and the gantry is connected to the bracket.

[0016] Compared to a structure in which the frame, legs and mast are welded into an integrated structure, in the forklift provided in the embodiment of the present application, the legs are detachably mounted on the frame, and the mast is detachably mounted on the legs. This makes it easier to replace the legs and improves the ease of replacing the legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] FIG1 is an exploded perspective view of a forklift according to an embodiment of the present application;

[0019] FIG2 is a schematic assembly diagram of the forklift according to the embodiment shown in FIG1 ;

[0020] FIG3 is an exploded perspective view of a forklift according to another embodiment of the present application;

[0021] FIG4 is a schematic assembly diagram of the forklift according to the embodiment shown in FIG3 ;

[0022] FIG5 is an exploded perspective view of a forklift according to another embodiment of the present application;

[0023] FIG. 6 is a simplified assembly diagram of the forklift according to the embodiment shown in FIG. 5 . DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] It should be clear that the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] The embodiments of the present application provide a forklift capable of improving the replaceability of outriggers and improving the overall assembly accuracy of the forklift.

[0027] The following further describes the implementation of the present application in conjunction with Figures 1 to 6.

[0028] FIG1 shows an exploded perspective view of a forklift according to an embodiment of the present application. Referring to FIG1 , the forklift of this embodiment may include a frame 1 , a first leg 2 , and a mast 3 .

[0029] The first supporting leg 2 is detachably mounted on the vehicle frame 1 , and the door frame 3 is detachably mounted on the first supporting leg 2 , so that the first supporting leg 2 can be easily replaced.

[0030] Specifically, the vehicle frame 1 may be provided with a first connecting portion (not shown in the figure), and the first leg 2 may be detachably mounted on the first connecting portion of the vehicle frame 1; the portal frame 3 may be provided with a second connecting portion 31, and the portal frame 3 may be detachably mounted on the first leg 2 via the second connecting portion 31, with the connection position between the portal frame 3 and the first leg 2 being close to the vehicle frame 1. That is, the first connecting portion of the vehicle frame 1 and the second connecting portion 31 of the portal frame 3 are detachably connected at different positions on the same side of the first leg 2.

[0031] As shown in FIG2 , a caster 21 is mounted on the bottom of the first leg 2. This allows the first leg 2 to provide good support for the mast 3 mounted thereon and to cooperate with the frame 1 to enable the forklift to move. In one example, the caster 21 can be disposed on the bottom of the first leg 2 on a side away from the frame 1.

[0032] The second connecting portion 31 of the gantry 3 is arranged on a side of the gantry 3 close to the vehicle frame 1 , and a cargo fork 32 is laterally arranged on a side of the gantry 3 away from the vehicle frame 1 to facilitate forklifts to pick up cargo.

[0033] The forklift provided in the embodiment of the present application includes a frame 1, a first leg 2 and a door frame 3, and the first leg 2 is detachably mounted on the frame 1, and the door frame 3 is detachably mounted on the first leg 2. In this way, the first leg 2 can be easily replaced, thereby increasing the interchangeability of the legs.

[0034] Referring to Figure 1, in one embodiment, the second connecting portion 31 on the door frame 3 includes a second upper connecting portion 311 and a second lower connecting portion 312 spaced apart from each other, and the second upper connecting portion 311 is located above the second lower connecting portion 312; the first position 22 of the first leg 2 is detachably connected to the second upper connecting portion 311 on the door frame 3; the second position 23 of the first leg 2 is detachably connected to the second lower connecting portion 312 on the door frame 3.

[0035] Exemplarily, the first leg 2 may include a walking leg 91 and a bracket 92 vertically fixedly connected to the walking leg, wherein the bracket 92 is connected to a position of the walking leg near one end of the frame 1. The first end of the walking leg is connected to the mast 3, and a caster 21 is installed at the bottom of the second end.

[0036] The first position 22 and the second position 23 of the first leg 2 can be arranged on the bracket 92 at intervals up and down, wherein the first position 22 on the bracket 92 is arranged corresponding to the second upper connecting portion 311 of the door frame 3, and the second position 23 on the bracket 92 is arranged corresponding to the second lower connecting portion 312 of the door frame 3.

[0037] The connection structure between the mast 3 and the first leg 2 affects the height of the center of gravity of the assembly formed by the mast 3 and the first leg 2. Compared to a configuration in which the mast 3 and the first leg 2 are connected only to the second position 23 below the first leg 2 via the second lower connection portion 312, the mast 3 is simultaneously connected to the first position 22 above the first leg 2 via the second upper connection portion 311. This can lower the height of the center of gravity of the assembly formed by the mast 3 and the first leg 2, thereby improving the stability of the assembly formed by the mast 3 and the first leg 2, and thus improving the overall stability of the forklift.

[0038] Referring to Figure 1, in one embodiment, the first position 22 on the first leg 2 is detachably connected to the second upper connecting portion 311 on the door frame 3 through a first bolt 4; the second position 23 on the first leg 2 is detachably connected to the second lower connecting portion 312 on the door frame 3 through a second bolt 5; wherein the first bolt 4 is horizontally arranged and the second bolt 5 is vertically arranged.

[0039] The second connecting portion 31 on the gantry 3 is located on the side of the gantry 3 close to the vehicle frame 1, and the fork 32 on the gantry 3 is located on the side of the gantry 3 away from the vehicle frame 1. Therefore, when the fork 32 on the gantry 3 is inserted with goods, the torque generated by the goods on the gantry 3 is toward the side of the gantry 3 away from the vehicle frame 1, so that the second upper connecting portion 311 of the gantry 3 applies a horizontal force toward the first position 22 of the first leg 2 away from the vehicle frame 1, and the second lower connecting portion 312 of the gantry 3 applies a vertical upward force to the second position 23 of the first leg 2.

[0040] The first bolt 4, which detachably connects the second upper connection portion 311 of the mast 3 to the first position 22 on the first leg 2, is arranged horizontally, and the second bolt 5, which detachably connects the second lower connection portion 312 of the mast 3 to the second position 23 on the first leg 2, is arranged vertically. This allows the first bolt 4 and the second bolt 5 to withstand tensile forces. Because the tensile forces of the first and second bolts 4 and 5 are far greater than their own shear forces, arranging the first bolt 4 horizontally improves its durability, while arranging the second bolt 5 vertically improves its durability. This improves the durability of the connection between the mast 3 and the first leg 2, and consequently, the overall reliability of the forklift.

[0041] Illustratively, a first threaded hole may be provided on the first position 22 on the first leg 2 and the second upper connecting portion 311 on the portal frame 3, and the first bolt 4 may be passed through the first threaded hole of threaded engagement, thereby detachably connecting the first position 22 of the first leg 2 to the second upper connecting portion 311 of the portal frame 3.

[0042] A first through hole may be provided on the first position 22 on the first leg 2 and the second upper connecting portion 311 on the portal frame 3, and the first bolt 4 may pass through the first through hole and engage with the first fastening nut thread, thereby detachably connecting the first position 22 of the first leg 2 to the second upper connecting portion 311 of the portal frame 3.

[0043] The connection mode between the second position 23 of the first leg 2 and the second lower connection portion 312 of the door frame 3 can refer to the connection mode between the first position 22 of the first leg 2 and the second upper connection portion 311 of the door frame 3.

[0044] In one embodiment, the first connection portion on the vehicle frame 1 includes a first upper connection portion and a first lower connection portion (not shown) spaced apart from each other; the first upper connection portion is located above the first lower connection portion. The vehicle frame 1 is connected to the first leg 2 via the first upper connection portion and the first lower connection portion. The vehicle frame 1 and the mast 3 are connected at different locations on the same side of the first leg 2. The specific connection between the vehicle frame 1 and the first leg 2 can be found in the connection between the mast 3 and the first leg 2.

[0045] Referring to Figure 1, in one embodiment, a first connecting member 221 is provided at the first position 22 of the first leg 2, and the first connecting member 221 is detachably connected to the second upper connecting portion 311 on the door frame 3 through a first bolt 4; the frame 1 can also be connected to the first connecting member 221 on the first leg 2 through the first upper connecting portion.

[0046] The door frame 3 and the vehicle frame 1 are detachably connected at different positions of the first connecting member 221, which is convenient for assembly and maintenance.

[0047] In one embodiment, a limiting structure (not shown in the figure) is further provided on one side of the vehicle frame 1 close to the portal frame 3. There may be a gap between the second upper connecting portion 311 of the portal frame 3 and the main body of the portal frame 3, and the limiting structure may be located in the gap.

[0048] The second upper connection part 311 of the portal frame 3 can be moved in the vertical direction, and the gap between the second upper connection part 311 and the main body of the portal frame 3 is placed on the limiting structure. In this way, the limiting structure can be located between the second upper connection part 311 of the portal frame 3 and the main body of the portal frame 3.

[0049] As mentioned above, when the fork 32 on the gantry 3 is inserted with cargo, the second upper connection part 311 of the gantry 3 applies a force in a horizontal direction away from the vehicle frame 1 to the second position 23 of the first leg 2. Since the limiting structure is located between the second upper connection part 311 of the gantry 3 and the main body of the gantry 3, the limiting structure can apply a force in a horizontal direction close to the vehicle frame 1 to the second upper connection part 311 of the gantry 3, thereby reducing the tensile force borne by the first bolt 4 that detachably connects the second upper connection part 311 of the gantry 3 to the first position 22 on the first leg 2, and further increasing the durability of the connection between the gantry 3 and the first leg 2.

[0050] Exemplarily, the second upper connecting portion 311 of the door frame 3 can be detachably connected to the limiting structure and the first position 22 of the first leg 2 by a first bolt 4 .

[0051] In one embodiment, a limiting protrusion (not shown) is provided on the bottom of the frame 1, and a corresponding limiting groove (not shown) is provided on the bottom of the first leg 2. The limiting protrusion is inserted into the limiting groove. In this way, the cooperation between the limiting protrusion and the limiting groove can limit the movement of the frame 1 relative to the first leg 2 in the front, back, left, and right directions. For example, the direction toward the mast 3 can be defined as the forward direction. This improves the overall reliability of the assembly structure formed by the frame 1, the second leg 6, and the mast 3, thereby improving the reliability of the forklift assembly.

[0052] 3 , in one embodiment, the first leg 2 may be replaced by a second leg 6 ; the second leg 6 may include a walking leg 61 and a telescopic leg 62 , and the telescopic leg 62 may be slidably disposed on the walking leg 61 .

[0053] The second leg 6 has a telescopic function, while the first leg 2 does not. It can be seen that the second leg 6 and the first leg 2 have different functions, that is, by replacing the first leg 2 with the second leg 6, the forklift can meet the needs of different application scenarios.

[0054] The walking legs 61 are detachably connected to the vehicle frame 1, and the gantry 3 is detachably mounted on the telescopic legs 62. In this way, the gantry 3 can slide relative to the walking legs 61 along with the telescopic legs 62, approaching or moving away from the vehicle frame 1, thereby inserting and removing goods in an environment with limited space.

[0055] Referring to Figure 4, a caster 611 is installed at the bottom of the walking leg 61; illustratively, the first end of the walking leg 61 is detachably connected to the frame 1, and the bottom of the second end of the walking leg 61 is installed with a caster 611, so that the walking leg 61 can support the telescopic leg 62 installed on the walking leg 61 and cooperate with the frame 1 to realize the movement of the forklift.

[0056] 3 , in one embodiment, the telescopic leg 62 includes a sliding seat 621 and a vertical support 622 vertically disposed on the sliding seat 621 . The sliding seat 621 is slidably disposed on the walking leg 61 ; the gantry 3 can be connected to the vertical support 622 .

[0057] Compared with the vertical support 622 of the telescopic leg 62 being directly slidably provided on the walking leg 61, the vertical support 622 is vertically provided on the sliding seat 621 and is slidably provided on the walking leg 61 through the sliding seat 621, which can increase the contact area between the telescopic leg 62 and the walking leg 61, thereby providing more stable support to the gantry 3 connected to the telescopic leg 62.

[0058] Exemplarily, a slide rail 612 may be provided opposite to each other on the inner side of the walking leg 61 , and a pulley 623 may be provided correspondingly on the outer side of the sliding seat 621 of the telescopic leg 62 , and the pulley 623 of the sliding seat 621 is located in the slide rail 612 of the walking leg 61 .

[0059] A long strip-shaped slider may also be provided on the inner side of the walking leg 61 , and a corresponding sliding groove may be provided on the outer side of the sliding seat 621 of the telescopic leg 62 , and the sliding groove of the sliding seat 621 is located on the long strip-shaped slider of the walking leg 61 .

[0060] In another embodiment, the door frame 3 may be connected to the sliding seat 621 and the vertical support 622 .

[0061] Among them, the specific connection method between the second support leg 6 and the frame 1 and the mast 3 can refer to the specific connection method between the first support leg 2 and the frame 1 and the mast 3.

[0062] Referring to Figure 3, in one embodiment, the limiting structure 7 is arranged at the top of the vertical support 622 of the telescopic leg 62 of the second leg 6, and there may be a gap between the second upper connecting portion 311 of the door frame 3 and the main body of the door frame 3, and the limiting structure 7 may be located in the gap; the bottom end of the second upper connecting portion 311 of the door frame 3 is supported on the top of the vertical support 622.

[0063] The second upper connecting portion 311 of the door frame 3 and the second supporting leg 6 can be detachably connected to the limiting structure 7 of the vertical support 622 of the telescopic supporting leg 62 through the second bolt 5.

[0064] Referring to FIG3 , in one embodiment, an L-shaped frame-limiting structure 8 is provided at the end of the traveling leg 61 of the second leg 6 proximate to the frame 1. The horizontal side of the L-shaped frame-limiting structure 8 is removably secured to the traveling leg 61 via a third bolt, while the vertical side of the L-shaped frame-limiting structure 8 abuts against the frame 1. Thus, the L-shaped frame-limiting structure 8 can limit the movement of the frame 1 toward the mast 3, thereby improving the overall reliability of the assembly structure formed by the frame 1, the second leg 6, and the mast 3, thereby improving the reliability of the forklift assembly.

[0065] For example, as shown in Figure 4, the horizontal and vertical sides of the L-shaped frame limiting structure 8 can be detachably fixed to the frame by screws, and the horizontal sides of the L-shaped frame limiting structure 8 and the frame 1 can be detachably fixed to the walking leg 61 by a third bolt, reducing the number of connecting parts between the L-shaped frame limiting structure 8, the frame 1 and the walking leg 61, and facilitating assembly and maintenance.

[0066] A counterweight (not shown) may be provided on the vehicle frame 1 to balance the weight of the cargo on the forks 32. The farther the distance between the counterweight and the cargo on the forks 32 is, the smaller the counterweight is required to balance the weight of cargo of the same weight.

[0067] 5 , in order to reduce the weight of the counterweight, in one embodiment, the first leg 2 is replaced by a third leg 9 , and the connection position between the mast 3 and the third leg 9 is away from the vehicle frame 1 .

[0068] The third leg 9 is detachably mounted on the vehicle frame 1, and the gantry 3 is detachably mounted on the third leg 9. The connection position between the gantry 3 and the third leg 9 is far away from the vehicle frame 1, which is equivalent to the third leg 9 being located between the vehicle frame 1 and the gantry 3. In this way, the distance between the vehicle frame 1 and the gantry 3 is increased, and the distance between the counterweight on the vehicle frame 1 and the cargo on the fork 32 of the gantry 3 is increased, thereby reducing the weight of the counterweight on the vehicle frame 1.

[0069] 6 , in one embodiment, the third leg 9 includes a walking leg 91, the first end of which is connected to the frame 1, and the bottom of the second end of which is mounted a caster 911. In this way, the third leg 9 can cooperate with the frame 1 to achieve the movement of the forklift.

[0070] A bracket 92 is vertically fixedly connected to the walking leg 91 . The bracket 92 is located near the second end of the walking leg 91 , and the gantry 3 is connected to the bracket 92 .

[0071] A caster 911 is installed at the bottom of the second end of the walking leg 91, which can provide good support to the bracket 92 located near the second end of the walking leg 91 and the door frame 3 connected to the bracket 92.

[0072] Among them, the specific connection method between the third leg 9 and the frame 1 and the mast 3 can refer to the specific connection method between the first leg 2 and the frame 1 and the mast 3.

[0073] Referring to Figure 5, in one embodiment, the limiting structure 13 is arranged at the top of the bracket 92 of the walking leg 91 of the third leg 9, and there may be a gap between the second upper connecting portion 311 of the gantry 3 and the main body of the gantry 3, and the limiting structure 13 may be located in the gap; the bottom end of the second upper connecting portion 311 of the gantry 3 is supported on the top of the bracket 92.

[0074] The second upper connecting portion 311 of the door frame 3 and the third leg 9 can be detachably connected to the limiting structure 13 of the bracket 92 of the walking leg 91 of the third leg 9 by a fourth bolt.

[0075] In one embodiment, a frame stopper 14 is further included. The frame stopper 14 may include a head (not shown) and a rod, wherein the radial dimension of the head is greater than the radial dimension of the rod.

[0076] A limiting groove 15 is provided on the inner side of the walking leg 91 of the third leg 9, and the rod portion of the frame limiting component 14 is located in the limiting groove 15. The side of the head of the frame limiting component 14 connected to the rod portion abuts against the edge of the limiting groove 15, and the side of the head of the frame limiting component 14 facing away from the rod portion abuts against the frame 1. In this way, the frame limiting component 14 can limit the movement of the frame 1 toward the door frame 3, thereby improving the reliability of the assembly structure formed by the frame 1, the third leg 9 and the door frame 3 as a whole, thereby improving the assembly reliability of the forklift.

[0077] For example, the rod of the frame limiter 14 and the frame 1 can be detachably connected to the walking leg 91 of the second leg 6 by the fifth screw, and the head of the frame limiter 14 can be detachably fixed to the frame 1 by the sixth screw, thereby reducing the number of connecting parts between the frame limiter 14, the frame 1 and the walking leg 91 and facilitating assembly and maintenance.

[0078] In one embodiment, a first leg connection portion 10, a second leg connection portion 11 and a third leg connection portion 12 are provided on the frame 1. When the leg is the first leg 2, the first leg 2 is detachably mounted on the first leg connection portion 10 on the frame 1; when the leg is the second leg 6, the second leg 6 is detachably mounted on the second leg connection portion 11 on the frame 1; when the leg is the third leg 9, the third leg 9 is detachably mounted on the third leg connection portion 12 on the frame 1.

[0079] The forklift provided in the embodiment of the present application includes a frame 1, legs and a door frame 3, and the legs are detachably mounted on the frame 1, and the door frame 3 is detachably mounted on the legs, thereby improving the replaceability of the legs. A first leg 2, a second leg 6 and a third leg 9 with different structural forms are provided, and the first leg 2, the second leg 6 and the third leg 9 can be assembled with the same frame 1 and door frame 3. In this way, corresponding legs can be produced according to demand and assembled with the pre-manufactured frame 1 and door frame 3 to obtain the corresponding forklift, thereby reducing the production cycle and quickly delivering to customers.

[0080] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0081] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A forklift, comprising: Frame; A support leg, the support leg is detachably mounted on the frame, and a caster is mounted at the bottom of the support leg; as well as A gantry, the gantry being detachably mounted on the supporting legs, and a fork being transversely arranged on a side of the gantry away from the vehicle frame, Wherein, the frame is provided with a first connecting portion, and the supporting leg is detachably mounted on the first connecting portion; The door frame is provided with a second connection portion on a side close to the vehicle frame, and the door frame is detachably mounted on the support leg through the second connection portion.

2. The forklift according to claim 1, characterized in that: The legs include a first leg; The second connecting portion includes a second upper connecting portion and a second lower connecting portion spaced apart from each other; the second upper connecting portion is located above the second lower connecting portion; The first supporting leg is detachably connected to the second upper connecting portion and the second lower connecting portion.

3. The forklift according to claim 2, characterized in that: The first position on the first leg is detachably connected to the second upper connecting portion via a first bolt; the second position on the first leg is detachably connected to the second lower connecting portion via a second bolt; wherein the first bolt is arranged horizontally.

4. The forklift according to claim 2, characterized in that: The first connecting portion includes a first upper connecting portion and a first lower connecting portion spaced apart from each other, wherein the first upper connecting portion is located above the first lower connecting portion; The frame is connected to the first leg via a first upper connecting portion and a first lower connecting portion.

5. The forklift according to claim 4, characterized in that: A first connecting member is provided at a first position of the first supporting leg, and the first connecting member is detachably connected to the second upper connecting portion by a first bolt; The frame is connected to the first connecting member on the first leg through the first upper connecting portion.

6. The forklift according to claim 3, characterized in that: A limiting structure is also provided on one side of the vehicle frame close to the door frame, a gap is provided between the second upper connecting portion and the main body of the door frame, and the limiting structure is located in the gap.

7. The forklift according to claim 1, characterized in that: The legs include a second leg; Wherein, the second leg comprises: a walking leg and a telescopic leg; The walking legs are detachably connected to the frame, and casters are installed at the bottom of the walking legs; the telescopic legs are slidably arranged on the walking legs; The door frame is detachably mounted on the telescopic legs.

8. The forklift according to claim 7, characterized in that: The telescopic leg comprises a sliding seat and a vertical support vertically arranged on the sliding seat, and the sliding seat is slidably arranged on the walking leg; The gantry is connected to the vertical support; or The door frame is connected to the sliding seat and the vertical support.

9. The forklift according to claim 1, characterized in that: The supporting legs include a third supporting leg, and a connection position between the door frame and the third supporting leg is far away from the vehicle frame.

10. The forklift according to claim 9, characterized in that: The third leg comprises: a walking leg and a bracket vertically fixedly connected to the walking leg; The first end of the walking leg is connected to the frame, and a caster is installed at the bottom of the second end; The bracket is vertically connected at a position close to the second end of the walking leg; The door frame is connected to the bracket.

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