Frame and electric forklift

Abstract

The invention relates to a frame and an electric forklift. The frame comprises a main frame body, and the main frame body comprises a front portion, a middle portion and a rear portion; wherein the front part is provided with a first mounting structure at least used for mounting a drive axle of the electric forklift, the middle part is provided with a second mounting structure at least used for mounting a battery pack of the electric forklift, the rear part is provided with a third mounting structure at least used for mounting a steering axle of the electric forklift, and the front part, the middle part and the rear part are integrally formed. According to the technical scheme, the first installation structure used for installing the drive axle of the electric forklift, the second installation structure used for installing the battery pack of the electric forklift and the third installation structure used for installing the steering axle of the electric forklift are arranged on the front portion, the middle portion and the rear portion of the main frame body respectively, and installation of the drive axle, the battery pack and the steering axle is completed. The front portion, the middle portion and the rear portion of the main frame body are integrally formed, manufacturing is convenient, the whole frame, the drive axle, the battery pack and the steering axle are installed in an assembly mode, and the assembly efficiency can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle frame and an electric forklift. Background Art

[0002] The vehicle frame in the prior art has a large number of parts, which leads to a large workload of cutting and processing, and further leads to low assembly efficiency of the vehicle frame. Summary of the invention

[0003] The embodiment of the present application provides a frame, which improves the assembly efficiency of the frame, so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present application, a frame is provided, which is applicable to an electric forklift, comprising:

[0005] The main frame includes a front part, a middle part and a rear part;

[0006] in,

[0007] The front portion is provided with a first mounting structure for mounting at least a drive axle of an electric forklift;

[0008] The middle portion is provided with a second mounting structure for mounting at least a battery pack of an electric forklift;

[0009] The rear portion is provided with a third mounting structure for mounting at least a steering axle of an electric forklift;

[0010] Wherein, the front part, the middle part and the rear part are integrally formed.

[0011] Optionally, the front portion and / or the rear portion are arranged vertically or obliquely relative to the middle portion.

[0012] Optionally, the first mounting structure includes:

[0013] The front slot arm is at least used to be connected to the driving axle of the electric forklift.

[0014] Optionally, the front slot arm is arranged obliquely or vertically with respect to the main frame.

[0015] Optionally, two wall surfaces of the front slot arm are provided with drive axle interfaces;

[0016] The drive axle of the electric forklift has a dynamic connection port;

[0017] When the drive axle interface is combined with the dynamic connection port, the relative position of the drive axle of the electric forklift and the main frame is restricted.

[0018] Optionally, the first mounting structure further includes:

[0019] The first connecting member is used to connect the drive axle interface with the dynamic connection port.

[0020] Optionally, the portion of the front slot arm away from the middle portion is arc-shaped, and two sides of the arc are provided with planes;

[0021] Wherein, the drive bridge interface is arranged on a side edge of the plane close to the arc.

[0022] Optionally, the third mounting structure includes:

[0023] The rear slot arm is at least used to be connected to the steering axle of the electric forklift.

[0024] Optionally, the rear tank arm is provided with a steering bridge interface;

[0025] The steering axle is provided with a transfer connection;

[0026] Wherein, when the steering axle interface is combined with the transfer interface, the relative position of the steering axle of the electric forklift and the main frame is restricted.

[0027] Optionally, the third mounting structure further includes:

[0028] The second connecting member is used to connect the steering axle interface and the transfer interface.

[0029] Optionally, the frame further comprises:

[0030] A limiting structure, arranged on the rear slot arm;

[0031] Wherein, the limiting structure is suitable for limiting the swing angle of the steering axle.

[0032] Optionally, the rear slot arm further has:

[0033] The avoidance space is used to avoid the steering wheels of the electric forklift.

[0034] Optionally, the frame further comprises:

[0035] A rear mounting frame connected to the rear slot arm;

[0036] Wherein, a rear installation interface is provided on the rear tank arm at a position away from the steering bridge interface;

[0037] The rear mounting bracket is provided with a rear mounting opening;

[0038] When the rear mounting interface is combined with the rear mounting opening, the relative position of the rear mounting frame and the main frame body is restricted.

[0039] Optionally, the second mounting structure includes:

[0040] a first extension arm, located between the front slot arm and the middle portion;

[0041] a second extension arm, located between the middle portion and the rear slot arm;

[0042] Wherein, a receiving space for receiving the battery pack is formed between the first extending arm, the second extending arm and the middle portion;

[0043] The drive axle interface is located outside the accommodating space.

[0044] Optionally, the frame further comprises:

[0045] The battery pack bottom plate is connected to the first extension arm and the second extension arm respectively, so as to form a storage space for accommodating the battery pack together with the middle portion.

[0046] Optionally, the frame further comprises:

[0047] A front transverse plate connected to the front slot arm;

[0048] A connecting seat connected between the front transverse plate and the front slot arm;

[0049] Wherein, the connecting seat has:

[0050] A first seat connection port, used for connecting with the front cross plate;

[0051] The second seat connection port is used to connect with the front slot arm.

[0052] Optionally, the front slot arm has:

[0053] An arm connection port adapted to connect with the second seat connection port;

[0054] When the second seat connection port is combined with the arm connection port, the relative position of the connection seat and the main frame is restricted.

[0055] Optionally, the frame further comprises:

[0056] A sub-frame, one sub-frame is respectively arranged on both sides of the main frame;

[0057] Wherein, the auxiliary frame is connected to the main frame through the connecting seat.

[0058] Optionally, along a projection plane perpendicular to a direction in which the front portion extends toward the rear portion, a projection of the main frame is located within a projection of the sub-frame.

[0059] According to a second aspect of the present application, there is provided an electric forklift, comprising the frame as described above.

[0060] The beneficial effect of the present application is that a frame capable of improving assembly efficiency is provided.

[0061] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0062] The frame of the embodiment of the present application includes a main frame body, which includes a front part, a middle part and a rear part;

[0063] Among them, the front part is provided with a first mounting structure for at least installing the driving axle of the electric forklift, the middle part is provided with a second mounting structure for at least installing the battery pack of the electric forklift, and the rear part is provided with a third mounting structure for at least installing the steering axle of the electric forklift, wherein the front part, the middle part and the rear part are integrally formed. Through the above technical scheme, the front, middle and rear parts of the main frame are respectively provided with a first mounting structure for installing the driving axle of the electric forklift, a second mounting structure for installing the battery pack of the electric forklift, and a third mounting structure for installing the steering axle of the electric forklift, so as to complete the installation of the driving axle, the battery pack and the steering axle, and the front, middle and rear parts of the main frame are integrally formed, which is convenient for manufacturing, and the installation of the entire frame and the driving axle, the battery pack and the steering axle adopts an assembled type, which can effectively improve the assembly efficiency.

[0064] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0066] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0067] Figure 1 is a schematic diagram of the overall structure of the main frame of the frame provided in an exemplary embodiment of the present application;

[0068] Figure 2 is another perspective structural schematic diagram of the main frame provided in an exemplary embodiment of the present application;

[0069] Figure 3 is a structural schematic diagram of another angle of the main frame provided in an exemplary embodiment of the present application;

[0070] Figure 4 is a schematic structural diagram of a frame provided in an exemplary embodiment of the present application;

[0071] Figure 5 is a schematic diagram of an exploded structure of a vehicle frame provided in an exemplary embodiment of the present application;

[0072] Figure 6 is a schematic structural diagram of a sub-frame connecting member provided in an exemplary embodiment of the present application;

[0073] Figure 7 This is a schematic diagram of the structure of the battery pack bottom plate

[0074] Figure 8 is a schematic structural diagram of a main frame of another structure provided in an exemplary embodiment of the present application;

[0075] Description of reference numerals:

[0076] 10. Frame;

[0077] 100. Main frame;

[0078] 110, front;

[0079] 111, front slot arm; 11a, avoidance space;

[0080] 111a, arm connection port; 111b, drive axle interface;

[0081] 120, middle part; 120a, plate connection port; 121, first extension arm; 122, second extension arm;

[0082] 130, rear;

[0083] 131, rear slot arm; 131a, steering axle interface; 131b, rear installation interface;

[0084] 140. Limiting structure;

[0085] 150, rear mounting frame; 150a, rear mounting opening;

[0086] 160, battery pack bottom plate; 160a, bottom plate interface;

[0087] 170, front horizontal board;

[0088] 180, connection seat; 181, first seat connection port; 182, second seat connection port;

[0089] 190. Sub-frame. DETAILED DESCRIPTION

[0090] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0091] Reference Figure 1 , Figure 2 and Figure 8 As shown, for the convenience of introduction, the upper, lower, left, right, front and rear directions are adopted in the corresponding drawings to facilitate the introduction of the relative position relationship between the various parts in the present application, which should not be understood as a limitation on the absolute position.

[0092] According to a first aspect of the present application, a frame 10 is provided, which is suitable for an electric forklift, Figure 1 , Figure 2 , Figure 3 The vehicle frame 10 includes: a main frame body 100 .

[0093] The main frame 100 includes a front portion 110, a middle portion 120 and a rear portion 130, wherein the front portion 110 is provided with a first mounting structure for at least mounting a drive axle of an electric forklift, the middle portion 120 is provided with a second mounting structure for at least mounting a battery pack of the electric forklift, and the rear portion 130 is provided with a third mounting structure for at least mounting a steering axle of the electric forklift.

[0094] The front portion 110 , the middle portion 120 and the rear portion 130 are integrally formed.

[0095] Through the above technical scheme, the front part 110, the middle part 120 and the rear part 130 of the main frame 100 are respectively provided with a first mounting structure for installing the drive axle of the electric forklift, a second mounting structure for installing the battery pack of the electric forklift and a third mounting structure for installing the steering axle of the electric forklift, so as to complete the installation of the drive axle, the battery pack and the steering axle, and the front part 110, the middle part 120 and the rear part 130 of the main frame 100 are integrally formed, and defects such as weld cracking will not occur during use, which is convenient for manufacturing. The installation of the entire frame and the drive axle, the battery pack and the steering axle adopts an assembled type, which can effectively improve the assembly efficiency and reduce the manufacturing cost.

[0096] In some embodiments, reference Figure 1 The cross section of the main frame 100 is in a “π” shape.

[0097] By setting the cross-section of the main frame 100 in a "π" shape, installation points can be provided for the first installation structure, the second installation structure and the third installation structure, which facilitates the stable installation of the drive axle, the battery pack and the steering axle, and the π structure is convenient for one-piece molding. The load-bearing strength and rigidity of the main frame 100 are better than those of the welded frame.

[0098] Exemplarily, the front and rear parts are inclined or vertically arranged relative to the middle part, so that the main frame is arranged to be open, and the cross-section of the open main frame is π-shaped, U-shaped, or other shapes.

[0099] In some embodiments, reference Figures 1 to 3 The first mounting structure includes: a front slot arm 111.

[0100] The front slot arm 111 is at least used to be connected to a drive axle of an electric forklift.

[0101] The front slot arm 111 is provided to at least connect with the drive axle of the electric forklift. The front slot wall is connected with the drive axle. An adaptive connection method can be provided on the front slot arm 111 according to the connection between the drive axle and the front slot arm 111 .

[0102] Exemplarily, two front slot arms 111 are provided, and the two front slot arms 111 are provided on the main frame body 100 along the left-right direction of the frame.

[0103] In some embodiments, the front slot arm 111 is disposed obliquely or vertically with respect to the main frame body 100 .

[0104] By arranging the front slot arm 111 and the main frame 100 in an inclined or vertical manner, the load-bearing strength of the main frame 100 can be further increased.

[0105] In some embodiments, reference Figure 2 The two wall surfaces of the front slot arm 111 are provided with a drive axle interface 111b, and the drive axle of the electric forklift has a dynamic connection interface.

[0106] When the drive axle interface 111 b is combined with the dynamic connection interface, the relative position of the drive axle of the electric forklift and the main frame 100 is restricted.

[0107] By providing a drive axle interface 111b on the two wall surfaces of the front slot arm 111, the drive axle of the electric forklift has a dynamic connection port. The drive axle interface 111b is combined with the dynamic connection port to limit the relative position of the drive axle of the electric forklift and the main frame 100, thereby completing the connection between the drive axle and the main frame 100.

[0108] Exemplarily, the two walls of the front slot arm 111 are defined as a first wall and a second wall. A plurality of drive axle interfaces 111 b are provided on the first wall and the second wall to achieve a stable connection between the drive axle and the main frame 100 .

[0109] In some embodiments, the frame 10 further includes: a first connecting member.

[0110] The first connecting member is provided to connect the drive axle interface 111b and the dynamic connection port, thereby realizing the connection between the drive axle and the main frame 100. The first connecting member can be disassembled from the drive axle and the main frame 100, and the disassembly and assembly are convenient.

[0111] Exemplarily, the first connecting member can be configured as a fastener, such as a fastening bolt, and the drive axle interface 111b and the dynamic connection port are constructed as a hole structure with an internal threaded surface, with a small processing amount and a simple processing method.

[0112] In some embodiments, reference Figure 1 The portion of the front slot arm 111 away from the middle portion 120 is arc-shaped, and planes are provided on both sides of the arc, wherein the drive bridge interface 111b is provided on one side edge of the plane close to the arc surface.

[0113] By setting the part of the front groove wall away from the middle part 120 in an arc shape, it is possible to make room for the bridge arm of the drive bridge, which is convenient for the installation of the drive bridge and the main frame 100. Planes are provided on both sides of the arc as the two wall surfaces of the front groove arm 111, which are used to form the drive bridge interface 111b, and the drive bridge interface 111b is set on one side edge of the plane close to the arc surface, which can further improve the installation efficiency.

[0114] Of course, reference Figure 8 Alternatively, the portion of the front groove wall away from the middle portion 120 may be arranged in a plane.

[0115] In some embodiments, reference Figure 3 The third mounting structure includes: a rear slot arm 131.

[0116] The rear slot arm 131 is provided to at least be connected to the steering axle of the electric forklift so that the steering axle is connected to the main frame 100, thereby ensuring the bearing force of the steering axle.

[0117] Exemplarily, the number of rear slot arms 131 is one, and the length of the rear slot arm 131 extends along the left-right direction of the main frame body 100 , and the width of the rear slot arm 131 extends along the front-back direction of the main frame body 100 .

[0118] In some embodiments, the rear tank arm 131 is provided with a steering axle interface 131a, and the steering axle is provided with a transfer connection interface, wherein when the steering axle interface 131a is combined with the transfer connection interface, the relative position of the steering axle of the electric forklift and the main frame 100 is restricted.

[0119] By providing a steering axle interface 131a on the rear slot arm 131 and a transfer connection interface on the steering axle, the relative position of the steering axle and the main frame 100 of the electric forklift is limited by the combination of the steering axle interface 131a and the transfer connection interface, thereby completing a stable connection between the steering axle and the main frame 100.

[0120] In some embodiments, the frame further includes: a second connecting member.

[0121] The steering axle interface 131a and the transfer interface are connected by the second connecting member, thereby completing the connection between the steering axle interface 131a and the transfer interface. The assembled connection avoids excessive stress concentration and is easy to install and disassemble.

[0122] Exemplarily, the second connecting member may be configured as a fastener, such as a fastening bolt, and the steering bridge interface 131a and the transfer interface are configured as a hole structure having an internal threaded surface.

[0123] In the present application, by setting interfaces on the front slot arm 111 and the rear slot arm 131, it is avoided to process the interfaces at the middle portion 120 of the main frame 100, the processing amount is small and the processing method is simple.

[0124] In some embodiments, reference Figure 3 The frame further includes: a limiting structure 140.

[0125] By arranging the limiting structure 140 on the rear slot arm 131, it is suitable for limiting the swing angle of the steering axle, avoiding the steering axle from rotating at an excessively large angle, and improving the use stability of the steering axle.

[0126] The limiting structure 140 is located between the opposite steering bridge interfaces 131 a.

[0127] Exemplarily, the limit interface can be set as a protrusion, the steering axle interface 131a is located at the bottom of the rear slot arm 131, and the steering axle interface 131a is set at four positions of the rear slot arm 131. The steering axle interfaces 131a at the four positions are arranged in a matrix, and the protrusion is located in the steering axle interfaces 131a arranged in a matrix.

[0128] In some embodiments, reference Figure 2 The rear groove arm 131 also has an escape space 11a.

[0129] The avoidance space 11a is provided to avoid the steering wheel of the electric forklift, thereby ensuring the rationality and stability of the connection between the steering wheel and the frame.

[0130] Exemplarily, the avoidance space 11 a may be configured as an arc-shaped spherical cavity formed in the rear slot arm 131 .

[0131] Two circular holes for accommodating the passage of the steering cylinder oil pipe may also be provided at the lower portion of the rear slot arm 131 .

[0132] In some embodiments, reference Figure 4 , Figure 5 The frame further includes: a rear mounting frame 150 .

[0133] The rear mounting frame 150 is connected to the rear tank arm 131 , wherein a rear mounting interface 131 b is provided on the rear tank arm 131 away from the steering bridge interface 131 a , and the rear mounting frame 150 is provided with a rear mounting opening 150 a .

[0134] When the rear mounting interface 131 b is combined with the rear mounting opening 150 a , the relative position of the rear mounting frame 150 and the main frame body 100 is restricted.

[0135] By providing the rear mounting frame 150, the rear mounting frame 150 can be used to provide a mounting plate for mounting other components such as a counterweight and a fuel tank, thereby improving the versatility of the frame.

[0136] In some embodiments, reference Figure 3 The second mounting structure includes: a first extension arm 121 and a second extension arm 122 .

[0137] The first extension arm 121 is located between the front slot arm 111 and the middle portion 120 , and the second extension arm 122 is located between the middle portion 120 and the rear slot arm 131 , wherein a storage space for accommodating a battery pack is formed between the first extension arm 121 , the second extension arm 122 and the middle portion 120 .

[0138] By providing the first extension arm 121 , the second extension arm 122 and the middle portion 120 , a receiving space for receiving the battery pack can be formed so that the battery pack can be installed on the vehicle frame.

[0139] Among them, the second extension arm 122 is located between the middle part 120 and the rear slot arm 131, and the drive axle interface 111b is located outside the accommodating space, which can improve the sealing performance of the forklift. The rear slot arm 131 is a closed space, the forklift space is better utilized, and there is no gap above the steering axle. Therefore, sand, dust, mud and water brought up by the rear wheels of the forklift will not be thrown into the interior of the forklift. The forklift has good sealing performance, and its waterproof and dustproof performance is better than that of a welded frame forklift.

[0140] In some embodiments, reference Figure 5 and Figure 7 The vehicle frame further includes: a battery pack bottom plate 160 .

[0141] The battery pack bottom plate 160 is connected to the first extension arm 121 and the second extension arm 122 respectively, so as to form a receiving space for receiving the battery pack together with the middle portion 120 .

[0142] Exemplarily, a board connection port 120a may be provided at the bottom of the first extension arm 121 and the bottom of the second extension arm 122, and a bottom plate interface 160a may be provided on the battery pack bottom plate 160 corresponding to the board connection port 120a. When the board connection port 120a is combined with the bottom plate interface 160a, the relative position of the battery pack bottom plate 160 and the main frame 100 can be limited. At this time, the accommodation space for installing the battery pack has an accommodation space with openings on the left and right sides, which facilitates the battery pack to move into or out of the accommodation space.

[0143] refer to Figure 7 A plurality of rollers for the battery side exit and a mechanism for fixing the battery box may also be installed on the battery pack bottom plate 160, on which components such as a bottom counterweight steel plate and a middle 120 pipeline trough are provided.

[0144] In some embodiments, reference Figure 4 and Figure 5 The frame also includes: a front cross plate 170 and a connecting seat 180.

[0145] The front transverse plate 170 is connected to the front slot arm 111 , and the connecting seat 180 is connected between the front transverse plate 170 and the front slot arm 111 .

[0146] The connection seat 180 has: a first seat connection port 181 for connecting with the front cross plate 170 ; and a second seat connection port 182 for connecting with the front slot arm 111 .

[0147] By providing the front cross plate 170 and the connecting seat 180 , the connection stability between the two front slot arms 111 can be increased.

[0148] Exemplarily, the first seat connection port 181 and the second seat connection port 182 may be adaptively connected by using a third connection member.

[0149] The third connecting member can also be a fastening bolt, and the first seat connecting port 181 and the second seat connecting port 182 can both be constructed as a hole structure with an internal thread surface.

[0150] In some embodiments, reference Figure 1 The front tank arm 111 has an arm connection port 111 a.

[0151] The arm connection port 111 a is adapted to be connected with the second seat connection port 182 . When the second seat connection port 182 is combined with the arm connection port 111 a , the relative position of the connection seat 180 and the main frame 100 is restricted.

[0152] By providing the arm connection port 111 a , the relative position of the connection seat 180 and the main frame 100 can be limited so that the connection between the two is stable.

[0153] Exemplarily, the arm connection port 111a and the second seat connection port 182 can be connected by a fourth connection member, and the fourth connection member can also be a fastening bolt. The arm connection port 111a and the second seat connection port 182 can both be constructed as a hole structure with an internal threaded surface.

[0154] In some embodiments, reference Figure 4 The frame further includes: a sub-frame 190.

[0155] A sub-frame 190 is disposed on both sides of the main frame 100 , respectively, wherein the sub-frame 190 is connected to the main frame 100 via a connecting seat 180 .

[0156] By providing the sub-frame 190, the accommodating space can be closed. It should be noted that the sub-frame 190 only serves as a skin, and its thickness is different from that of the main frame 100, and it does not serve as a load-bearing function.

[0157] For example, reference Figure 6 The sub-frame 190 can also be connected to a door lock.

[0158] In some embodiments, reference Figure 4 , along a projection plane perpendicular to a direction extending from the front portion 110 toward the rear portion 130 , the projection of the main frame 100 is located within the projection of the sub-frame 190 .

[0159] Along the projection plane perpendicular to the direction extending from the front part 110 toward the rear part 130, the projection of the main frame 100 is located within the projection of the sub-frame 190, thereby ensuring that the sub-frame 190 can completely cover the accommodating space. When the battery pack needs to be inspected, the sub-frame 190 can be separated from the connecting seat 180 to inspect the battery pack, which is convenient for disassembly and assembly.

[0160] The frame of the present application has an integrally cast main frame 100 that is heavier than a welded frame, and its center of gravity is located at a lower rear portion 130, so that the weight of the forklift counterweight can be reduced and the volume can be reduced, and the size of the counterweight along the length of the vehicle can be reduced, the turning radius of the forklift will be smaller, and the forklift has good stability. The center of gravity of the cast main frame 100 is lower than that of a welded frame and is farther away from the front wheel than the welded frame, so the longitudinal and lateral stability of the forklift are better than those of a forklift with a welded frame.

[0161] According to a second aspect of the present application, there is provided an electric forklift, comprising the frame as described above.

[0162] The electric forklift has all the beneficial effects of the above-mentioned frame, which will not be described in detail in this application.

[0163] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0164] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0165] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0166] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A frame suitable for an electric forklift, characterized in that: include: The main frame includes a front part, a middle part and a rear part; in, The front portion is provided with a first mounting structure for mounting at least a drive axle of an electric forklift; The middle portion is provided with a second mounting structure for mounting at least a battery pack of an electric forklift; The rear portion is provided with a third mounting structure for mounting at least a steering axle of an electric forklift; Wherein, the front part, the middle part and the rear part are integrally formed.

2. The frame according to claim 1, characterized in that: The front portion and / or the rear portion are arranged vertically or obliquely relative to the middle portion.

3. The frame according to claim 1, characterized in that: The first mounting structure comprises: The front slot arm is at least used to be connected to the driving axle of the electric forklift.

4. The frame according to claim 3, characterized in that: The front slot arm is arranged obliquely or vertically with respect to the main frame.

5. The frame according to claim 3, characterized in that: The two wall surfaces of the front slot arm are provided with drive axle interfaces; The drive axle of the electric forklift has a dynamic connection port; When the drive axle interface is combined with the dynamic connection port, the relative position of the drive axle of the electric forklift and the main frame is restricted.

6. The frame according to claim 5, characterized in that: The first mounting structure further comprises: The first connecting member is used to connect the drive axle interface with the dynamic connection port.

7. The frame according to claim 5, characterized in that: The portion of the front slot arm away from the middle portion is arc-shaped, and two sides of the arc are provided with flat surfaces; Wherein, the drive bridge interface is arranged on a side edge of the plane close to the arc.

8. The frame according to claim 3, characterized in that: The third mounting structure comprises: The rear slot arm is at least used to be connected to the steering axle of the electric forklift.

9. The frame according to claim 8, characterized in that: The rear tank arm is provided with a steering axle interface; The steering axle is provided with a transfer connection; Wherein, when the steering axle interface is combined with the transfer interface, the relative position of the steering axle of the electric forklift and the main frame is restricted.

10. The frame according to claim 9, characterized in that: The third mounting structure further includes: The second connecting member is used to connect the steering axle interface and the transfer interface.

11. The frame according to claim 8, characterized in that: Also includes: A limiting structure, arranged on the rear slot arm; Wherein, the limiting structure is suitable for limiting the swing angle of the steering axle.

12. The frame according to claim 8, characterized in that: The rear slot arm also has: The avoidance space is used to avoid the steering wheels of the electric forklift.

13. The frame according to claim 9, characterized in that: Also includes: A rear mounting frame connected to the rear slot arm; Wherein, a rear installation interface is provided on the rear tank arm at a position away from the steering bridge interface; The rear mounting bracket is provided with a rear mounting opening; When the rear mounting interface is combined with the rear mounting opening, the relative position of the rear mounting frame and the main frame body is restricted.

14. The frame according to claim 9, characterized in that The second mounting structure comprises: a first extension arm, located between the front slot arm and the middle portion; a second extension arm, located between the middle portion and the rear slot arm; Wherein, a receiving space for receiving the battery pack is formed between the first extending arm, the second extending arm and the middle portion; The drive axle interface is located outside the accommodating space.

15. The frame according to claim 14, characterized in that Also includes: The battery pack bottom plate is connected to the first extension arm and the second extension arm respectively, so as to form a storage space for accommodating the battery pack together with the middle portion.

16. The frame according to claim 3, characterized in that Also includes: A front transverse plate connected to the front slot arm; A connecting seat connected between the front transverse plate and the front slot arm; Wherein, the connecting seat has: A first seat connection port, used for connecting with the front cross plate; The second seat connection port is used to connect with the front slot arm.

17. The frame according to claim 16, characterized in that The front slot arm has: An arm connection port adapted to connect with the second seat connection port; When the second seat connection port is combined with the arm connection port, the relative position of the connection seat and the main frame is restricted.

18. The frame according to claim 16, characterized in that Also includes: A sub-frame, one sub-frame is respectively arranged on both sides of the main frame; Wherein, the auxiliary frame is connected to the main frame through the connecting seat.

19. The frame according to claim 18, characterized in that Along a projection plane perpendicular to a direction in which the front portion extends toward the rear portion, a projection of the main frame is located within a projection of the sub-frame.

20. An electric forklift, characterized in that: The vehicle comprises a frame as claimed in any one of claims 1 to 19.

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