An electric forklift truck frame applicable to multiple battery replacement methods

Abstract

The present invention discloses an electric forklift truck frame applicable to multiple battery replacement methods, including: a frame body, on which a battery box is fixedly arranged, the battery box having an opening on the top surface and an opening on the side surface; a side door, connected to the side opening in an openable and closable manner; and a hood, connected to the top surface opening in an openable and closable manner. Since the frame body is provided with an opening on the top surface and an opening on the side surface, according to the actual situation such as the placement occasion of the vehicle, the battery can be taken out upward through the opening on the top surface, or the battery can be taken out laterally through the opening on the side surface, having multiple battery replacement methods, which provides convenience for the replacement of the battery.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to an electric forklift frame applicable to multiple battery replacement methods. Background Art

[0002] With the rapid development of electric vehicles, there is a great trend to replace internal combustion engines. However, at present, the parking and charging time of electric vehicles is long, which affects the working efficiency compared with the short refueling time of internal combustion engines. In order to enable electric vehicles to work continuously, the most commonly used solution at present is to replace the battery to shorten the vehicle parking time.

[0003] In a current electric forklift, the battery can only be taken in and out through an opening on the side of the electric forklift frame. However, the parking position of the electric forklift may cause the side opening to be unable to pick up the battery, which brings inconvenience to the battery replacement.

[0004] Therefore, how to facilitate the battery replacement is a technical problem that those skilled in the art need to solve at present. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an electric forklift frame applicable to multiple battery replacement methods, which facilitates the battery replacement.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An electric forklift frame applicable to multiple battery replacement methods, comprising:

[0008] A frame body, on which a battery box is fixedly arranged, and the battery box has a top opening and a side opening;

[0009] A side door, which is connected to the side opening in an openable and closable manner;

[0010] An engine cover, which is connected to the top opening in an openable and closable manner.

[0011] Preferably, it further includes a battery stopper, the battery stopper is hinged on a rotating shaft on the frame body, the battery stopper can rotate into the side opening to laterally block a part of the wall surface of the side opening, and cooperate with the side wall of the battery box opposite to the side opening to position the battery in the battery box, and the battery stopper can rotate out of the side opening to release the lateral occlusion of the side opening; an elastic member is arranged between the battery stopper and the frame body, and the restoring force of the elastic member makes the battery stopper have a movement tendency to rotate into the side opening.

[0012] Preferably, the side door is hinged to the vehicle frame body; a pull rope is connected between the battery stopper and the side door. During the process of the side door opening the side opening, the side door pulls the battery stopper out of the side opening through the pull rope. In the state where the side door closes the side opening, the battery stopper is turned into the side opening under the restoring force of the elastic member.

[0013] Preferably, the rotating shaft is perpendicular to the side wall of the battery box opposite to the side opening, and a baffle is fixedly arranged on the side door; during the process of the side door closing the side opening, the baffle is staggered from the turning limit position of the battery stopper in the direction of turning into the side opening, and a part of the structure of the baffle is located at the turning limit position of the battery stopper in the direction of turning out of the side opening.

[0014] Preferably, the vehicle frame body is fixedly connected to the vehicle body top frame, and at least part of the structure of the vehicle body top frame is located above the battery box; a lifting notch is arranged on the side surface of the vehicle body top frame, the lifting notch runs through in the up and down direction, and at least part of the structure of the lifting notch is aligned with the top surface opening in the up and down direction.

[0015] Preferably, after the engine cover closes the top surface opening and the side door closes the side opening, the top of the side door extends upward into the interior of the engine cover.

[0016] Preferably, at least two roller assemblies are arranged at the bottom of the battery box in sequence along the direction away from the side opening;

[0017] In the roller assembly, it includes a roller shaft and two rollers. The rollers are connected to the battery box through the roller shaft, and the rollers can rotate relative to the center line of the roller shaft. The outer diameter of the rollers is larger than the outer diameter of the roller shaft, so that a fork insertion space is formed above the two roller shafts and between the two rollers.

[0018] Preferably, the vehicle frame body includes a bottom plate, a neutral plate, a rear plate and a middle side plate; the neutral plate, the middle side plate and the rear plate are butt-jointed in sequence from front to back to form a U-shaped frame. The U-shaped frame is fixed above the bottom plate, the battery box is formed in the U-shaped frame, and the opening of the U-shaped frame opposite to the middle side plate is the side opening;

[0019] Two first U-shaped brackets extending in the front-rear direction are arranged in the battery box. The first U-shaped brackets are buckled and fixed on the bottom plate with the openings facing downwards, and the two first U-shaped brackets are arranged in sequence along the left-right direction.

[0020] Preferably, the bottom plate extends forward beyond the neutral plate, and the vehicle frame body further includes two front brackets arranged in sequence in the left-right direction and located in front of the neutral plate; each front bracket includes a second U-shaped bracket and a fender arranged in front of the second U-shaped bracket; the second U-shaped bracket extends in the front-back direction and is fixedly buckled on the bottom plate with the opening facing downward; the first U-shaped bracket penetrates through the neutral plate forward, extends into the second U-shaped bracket and is fixedly connected to the fender.

[0021] Preferably, a front cross beam is fixedly connected between the two front brackets, and the front cross beam, the neutral plate and the two front brackets enclose a quadrilateral frame;

[0022] The vehicle frame body further includes a rear cross beam arranged behind the rear vertical plate and two rear side plates arranged between the rear cross beam and the rear vertical plate; the two rear side plates are arranged in sequence in the left-right direction, and the rear cross beam, the rear vertical plate and the two rear side plates enclose a quadrilateral frame.

[0023] The electric forklift vehicle frame applicable to multiple battery replacement methods provided by the present invention includes: a vehicle frame body, on which a battery box is fixedly arranged, and the battery box has an opening on the top surface and an opening on the side surface; a side door, which is connected to the side opening in an openable and closable manner; and a machine cover, which is connected to the top surface opening in an openable and closable manner.

[0024] Since the vehicle frame body is provided with an opening on the top surface and an opening on the side surface, the battery can be taken out upward through the top surface opening or taken out laterally through the side surface opening according to the actual situation such as the placement occasion of the vehicle, and there are multiple battery replacement methods, which provides convenience for the replacement of the battery. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0026] Figure 1 Isometric view of the electric forklift to which the electric forklift vehicle frame provided by the present invention is applied;

[0027] Figure 2 Right view of the electric forklift to which the electric forklift vehicle frame provided by the present invention is applied;

[0028] Figure 3 Front view of the roller assembly in the electric forklift vehicle frame provided by the present invention;

[0029] Figure 4Assembly drawing of the vehicle frame body, bracket and roller assembly in the electric forklift truck provided by the present invention;

[0030] Figure 5 Partial right view of the electric forklift truck frame provided by the present invention after the side door is opened;

[0031] Figure 6 Is Figure 5 Partial axonometric enlarged view of;

[0032] Figure 7 Partial right view of the electric forklift truck frame provided by the present invention after the side door is closed;

[0033] Figure 8 Is Figure 7 A-A cross-sectional view of;

[0034] Figure 9 Structure diagram of the vehicle frame body in the electric forklift truck provided by the present invention;

[0035] Figure 10 Box cross-sectional view formed by the first U-shaped bracket and the bottom plate in the electric forklift truck frame provided by the present invention;

[0036] Figure 11 Box cross-sectional view of the right front part of the vehicle frame in the electric forklift truck provided by the present invention;

[0037] Reference numerals:

[0038] Hood 1;

[0039] Battery box 2, first U-shaped bracket 21, side opening 22, top opening 23;

[0040] Vehicle body top frame 3, lifting notch 31;

[0041] Side door 4, lock pin 41, lock catch 42, baffle 43;

[0042] Roller assembly 5, retaining ring 51, roller 52, roller shaft 53, bracket 54, fork insertion space 55;

[0043] Battery stop 6, transfer limit rod 61, bolt 62, rotation limit rod 63, torsion spring 64, base 65, pull rope 66, spacer sleeve 67;

[0044] Bottom plate 7, middle side plate 71;

[0045] Neutral plate 8, front bending plate 81, front wall plate 82, fender 83, front cross beam 84, second U-shaped bracket 85, front bracket 86;

[0046] Rear vertical plate 9, rear side plate 91, rear cross beam 92, rib plate 93;

[0047] Battery 10. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] The core of the present invention is to provide an electric forklift truck frame applicable to multiple battery replacement methods, which facilitates the replacement of the battery.

[0050] For a specific first embodiment of the electric forklift truck frame applicable to multiple battery replacement methods provided by the present invention, please refer to Figures 1 to 11 , including a frame body, a side door 4 and a hood 1.

[0051] A battery box 2 is fixedly arranged on the frame body to accommodate a battery 10, and the battery 10 is specifically a storage battery. The battery box 2 has a top opening 23 and a side opening 22 for taking in and out the battery 10. Specifically, one side opening 22 is provided, and in other embodiments, at least two side openings 22 may also be provided.

[0052] The frame body includes a bottom plate 7, a neutral plate 8, a rear vertical plate 9 and a middle side plate 71. The neutral plate 8, the middle side plate 71 and the rear vertical plate 9 are butt-jointed in sequence from front to back to form a U-shaped frame. The U-shaped frame is fixed above the bottom plate 7, and the battery box 2 is formed in the U-shaped frame. The opening on the U-shaped frame opposite to the middle side plate 71 is the side opening 22. The neutral plate 8 and the side opening 22 are arranged in sequence in the left-right direction. Specifically, the neutral plate 8 is located on the left side, and the side opening 22 is located on the right side. Among them, the left-right direction, the up-down direction and the front-back direction are perpendicular to each other in pairs.

[0053] The side door 4 is connected to the side opening 22 in an openable and closable manner, and the hood 1 is connected to the top opening 23 in an openable and closable manner. After being closed, the side door 4 can completely or partially cover the side opening 22, and the hood 1 can completely or partially cover the top opening 23.

[0054] In this embodiment, since the frame body is provided with the top opening 23 and the side opening 22, the battery 10 can be taken out upward through the top opening 23 or taken out laterally through the side opening 22 according to the actual situation such as the placement occasion of the vehicle, and there are multiple battery 10 replacement methods, which facilitates the replacement of the battery 10. Among them, multiple specifically means at least two.

[0055] Furthermore, as Figures 5 to 6As shown, the electric forklift frame also includes a battery block 6, which is hinged on the rotating shaft on the frame body. The battery block 6 can be rotated into the side opening 22 to block part of the wall surface of the side opening 22 laterally, and cooperate with the side wall (i.e., the middle side plate 71) on the battery box 2 opposite to the side opening 22 to position the battery 10 in the battery box 2 to prevent the battery 10 from escaping from the battery box 2 through the side opening 22, and the battery block 6 can be rotated out of the side opening 22 to release the lateral blocking of the side opening 22. An elastic member is arranged between the battery block 6 and the frame body, and the restoring force of the elastic member makes the battery block 6 have a movement tendency to rotate into the side opening 22.

[0056] In this embodiment, by adding a battery block 6, the battery 10 can be positioned in the left and right directions in cooperation with the middle side plate 71 to prevent the battery 10 from shaking in the left and right directions and slipping out of the battery box 2, thereby improving the stability of the placement of the battery 10 and reducing the requirements for the assembly accuracy of the side door 4.

[0057] Furthermore, if Figure 2 As shown, the side door 4 is hinged to the frame body. Specifically, the rear side of the side door 4 is hinged to the frame body, and a lock structure that can be opened and closed is arranged between the front side of the side door 4 and the frame body.

[0058] Specifically, the locking structure includes a lock pin 41 fixed to the side door 4 and a lock buckle 42 fixed to the frame body, and the lock pin 41 and the lock buckle 42 can be fixed by suction or snap connection. In addition, the frame body also includes a front bracket 86 fixed to the front side of the neutral plate 8, and the lock buckle 42 is arranged on the right side surface of the front bracket 86. Of course, in other embodiments, the side door 4 can also be slidably connected to the frame body.

[0059] Furthermore, if Figures 5 to 6 As shown, a pull rope 66 is connected between the battery block 6 and the side door 4. When the side door 4 opens the side opening 22, the side door 4 pulls the battery block 6 out of the side opening 22 through the pull rope 66. When the side door 4 closes the side opening 22, the battery block 6 rotates into the side opening 22 under the action of the restoring force of the elastic member.

[0060] The pull rope 66 and the elastic member can cooperate to realize the linkage between the battery block 6 and the side door 4. There is no need to move the battery block 6 separately, and the operation is convenient. When the side door 4 is opened, the battery block 6 is released from blocking the side opening 22 so that the battery 10 can be taken out laterally; when the side door 4 is closed, the battery block 6 extends into the side opening 22 to limit the battery 10 in the battery box 2.

[0061] Furthermore, if Figures 5 to 6As shown, a rotation-in limit rod 61 and a rotation-out limit rod 63 are fixedly arranged on the frame body, and the rotation-in limit rod 61 is specifically round steel. The battery block 6 can be rotated in at most until it abuts against the rotation-in limit rod 61, and can be rotated out at most until it abuts against the rotation-out limit rod 63, so that the rotation range of the battery block 6 is limited by the rotation-in limit rod 61 and the rotation-out limit rod 63. In addition, a pull rope 66 passes through the guide groove on the rotation-out limit rod 63, one end of which is connected to the battery block 6, and the other end is connected to the side door 4.

[0062] Furthermore, if Figure 7 As shown, the rotating shaft is perpendicular to the middle side plate 71, that is, it extends in the left-right direction. Of course, in other embodiments, the rotating shaft can also extend in the up-down direction. A baffle 43 is fixedly provided on the side door 4, specifically welded. After the side door 4 closes the side opening 22, the baffle 43 is staggered with the battery block 6 in the direction of rotating into the side opening 22. The partial structure of the baffle 43 is located at the battery block 6 in the direction of rotating out of the side opening 22. The limit position of the rotation.

[0063] Specifically, the rear upright plate 9 is fixedly connected to the base 65, the rotating shaft includes a spacer 67 connected to the base 65 through a bolt 62, and one end of the battery block 6 is sleeved on the spacer 67. In addition, the elastic member is a torsion spring 64 sleeved on the rotating shaft.

[0064] Through the setting of the battery block 6 in the present embodiment, when the side door 4 is opened, the pull rope 66 will drive the battery block 6 to rotate, thereby realizing the synchronous opening of the side door 4 and the battery block 6. After rotating to a certain angle, the rotation-out limit rod 63 will limit the rotation of the battery block 6, thereby realizing the synchronous limiting of the opening of the battery block 6 and the side door 4. At this time, the battery block 6 and the side door 4 are opened in place; after the battery 10 is replaced, it is only necessary to close the side door 4. Under the action of the torsion spring 64, the battery block 6 will return counterclockwise, and under the limiting of the rotation-in limit rod 61, the left and right limit of the battery 10 is achieved, thereby limiting the left and right shaking of the battery 10 to prevent it from sliding out of the battery box 2 to the right.

[0065] Among them, in the normal state where the elastic member has not failed, if Figure 7 As shown, the battery block 6 moves to the extreme inward position under the action of the elastic member, and the baffle 43 is staggered with the battery block 6, and the side door 4 can be closed normally; after the elastic member fails, the elastic member cannot drive the battery block 6 to rotate to the extreme inward position. When closing the side door 4, the baffle 43 abuts against the battery block 6 at the extreme outward position, and the side door 4 cannot close the side opening 22. The baffle 43 and the door closing action can be used to determine whether the elastic member and the battery block 6 have failed, thereby improving the reliability of closing the side opening 22.

[0066] Furthermore, if Figure 1As shown in the figure, the frame body is fixedly connected to the top frame 3 of the vehicle body, and at least part of the structure of the top frame 3 of the vehicle body is located above the battery box 2. A lifting notch 31 is provided on the side of the top frame 3 of the vehicle body. The lifting notch 31 runs through in the up and down direction and is aligned with at least part of the structure of the top opening 23 in the up and down direction. After the engine cover 1 is opened, the overhead crane hook can enter from the lifting notch 31 to lift and replace the battery 10.

[0067] Furthermore, as Figure 7 and Figure 8 shown in the figure, after the engine cover 1 closes the top opening 23 and the side door 4 closes the side opening 22, the top of the side door 4 extends upward into the interior of the engine cover 1. Specifically, the rear side of the engine cover 1 is hinged to the frame body.

[0068] During use, first close the side door 4. However, if the side door 4 is not closed in place, it will block the lower cover of the engine cover 1, making the engine cover 1 unable to be closed in place, resulting in an interlocking effect between the side door 4 and the engine cover 1, and judging whether the side door 4 is closed in place through the lower cover state of the engine cover 1.

[0069] In addition, in this embodiment, there is a mechanical interlock between the side door 4 and the battery stopper 6. The closing condition of the side door 4 can be judged through the baffle 43 between the side door 4 and the battery stopper 6, and the closing condition of the side door 4 can also be judged through the closing condition of the engine cover 1, realizing triple protection for the battery 10 in place.

[0070] Furthermore, as Figures 3 to 5 shown in the figure, at least two roller assemblies 5 are sequentially arranged at the bottom of the battery box 2 along the direction away from the side opening 22. In this embodiment, the roller assemblies 5 are specifically arranged in sequence in the left and right directions.

[0071] Among them, in the roller assembly 5, it includes a roller shaft 53 and two rollers 52. The center line of the roller shaft 53 extends in the front and back directions 53 The roller 52 is connected to the battery box 2 through the roller shaft 53, and the roller 52 can rotate relative to the center line of the roller shaft 53. Specifically, the roller 52 is sleeved on the roller shaft 53, and the roller 52 is axially positioned by the retaining ring 51 on the roller shaft 53. The outer diameter of the roller 52 is larger than the outer diameter of the roller shaft 53. Through the outer diameter difference between the roller 52 and the shaft, a forklift insertion space 55 is formed in the part above the two roller shafts 53 and between the two rollers 52. In addition, each roller assembly 5 can be arranged on a bracket 54, and the top surface of the roller shaft 53 is higher than the highest surface of the bracket 54, and the bracket 54 is fixed to the top frame 3 of the vehicle body by screws.

[0072] When the battery 10 is moved laterally, the rollers 52 roll under the battery 10, which can reduce the frictional damage of the battery 10 compared to the battery 10 sliding directly on the bottom plate 7. Additionally, after the side door 4 is opened, the forklift can directly extend through the fork into the space 55 and enter under the battery 10, enabling the forklift to directly fork out the battery 10 for replacement. Alternatively, when the side door 4 is opened, the battery 10 can also be pulled out of the battery box 2 by hand.

[0073] Further, as Figure 9 and Figure 10 shown, two first U-shaped brackets 21 extending in the front-back direction are provided in the battery box 2. The first U-shaped brackets 21 are buckled downward with their openings and fixed to the bottom plate 7, and the two first U-shaped brackets 21 are arranged in sequence along the left-right direction. Optionally, the first U-shaped bracket 21 is a U-shaped channel steel.

[0074] Specifically, the two first U-shaped brackets 21 have the same structure to ensure that the battery 10 is flat and has no left-right inclination after being placed. The battery 10 presses on the U-shaped channel steel, and the U-shaped channel steel itself has high structural strength. The neutral plate 8, the rear plate 9, the U-shaped channel steel and the bottom plate 7 form a box structure, increasing the structural strength.

[0075] Further, as Figure 9 and Figure 11 shown, the bottom plate 7 extends forward beyond the neutral plate 8, and the vehicle frame body further includes two front brackets 86 provided in front of the neutral plate 8 and arranged in sequence along the left-right direction. The front bracket 86 includes a second U-shaped bracket 85 and a fender 83 provided in front of the second U-shaped bracket 85. The second U-shaped bracket 85 extends in the front-back direction and is buckled downward with its opening and fixed to the bottom plate 7.

[0076] Specifically, as Figure 11 shown, the second U-shaped bracket 85 is formed by a front bent plate 81 and a front wall plate 82. The front bent plate 81 and the front wall plate 82 are arranged in sequence along the left-right direction, and the front wall plate 82 is close to another front bracket 86.

[0077] The first U-shaped bracket 21 penetrates forward through the neutral plate 8, extends into the second U-shaped bracket 85 and is fixedly connected to the fender 83. The force on the battery box 2 is transmitted forward by the first U-shaped bracket 21 and is shared by the front and rear parts of the vehicle frame body. Each component of each part of the whole vehicle can share the force, thus avoiding local force concentration on the whole vehicle and affecting the frame strength, ensuring that the neutral plate 8 and the rear plate 9 will not be deformed, and enabling the battery 10 to quickly and conveniently enter and exit the battery box 2.

[0078] That is to say, in addition to the box structure formed by the neutral plate 8, the rear vertical plate 9, the first U-shaped bracket 21 and the bottom plate 7, the neutral plate 8, the fender 83, the second U-shaped bracket 85 and the bottom plate 7 also form a small front-closed box structure, and the front section of the former box structure extends into the latter box structure. The double-box structure has good structural strength, and at the same time, each part participates in the force in the front part, without forming local stress concentration, which affects the frame strength. In addition, the front and rear forces of the front and rear parts of the frame body are transmitted through the box structure with two levels of high and low in the middle of the frame.

[0079] Further, as Figure 9 shown, a front cross beam 84 is fixedly connected between the two front brackets 86, and the front cross beam 84, the neutral plate 8 and the two front brackets 86 enclose a quadrilateral frame. Specifically, the two ends of the front cross beam 84 are respectively connected to the two fenders 83. The setting of the quadrilateral frame enables the left front bracket 86 and the right front bracket 86 of the frame body to be transmitted left and right through the quadrilateral frame, so that the front part of the frame body is evenly stressed and does not form local stress concentration, which affects the frame strength, thereby optimizing the force on the entire front part of the frame.

[0080] In addition, the frame body further includes a rear cross beam 92 provided on the rear side of the rear vertical plate 9 and two rear side plates 91 provided between the rear cross beam 92 and the rear vertical plate 9. The two rear side plates 91 are arranged in sequence in the left-right direction, and the rear cross beam 92, the rear vertical plate 9 and the two rear side plates 91 enclose a quadrilateral frame. In addition, the rear vertical plate 9 and the rear side plates 91 and the rib plate 93 form a triangular structure. Based on the setting of the quadrilateral frame and the triangular structure, each part of the rear part of the frame body can share the force in the left-right direction and the up-down direction, optimizing the force on the entire rear part of the frame body.

[0081] The electric forklift frame of the present invention can provide a variety of ways to replace the battery 10. Specifically, a crane, a forklift, and manual pulling can be used in a variety of ways to replace the battery 10, so that customers do not need to consider which battery replacement method to choose when selecting the type of forklift. At the same time, the connection strength of the frame in the front, rear, left, and right directions is strengthened. Each box structure of the frame is connected in series, and each box is well connected to the entire frame in all directions of the front, rear, left, and right. Each part is a component of the box, and each part can be fully utilized to share the force of the frame, effectively avoiding stress concentration, insufficient strength, and frame deformation at the opening of the frame, and ensuring that the lifting notch 31 of the frame can still guarantee the frame strength.

[0082] It should be noted that when an element is referred to as "fixed" to another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0083] The orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0084] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0085] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0086] The electric forklift truck frame provided by the present invention has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An electric forklift frame suitable for multiple battery replacement methods, It is characterized in that include: A vehicle frame body, on which a battery box (2) is fixedly arranged, wherein the battery box (2) has a top opening (23) and a side opening (22); A side door (4) connected to the side opening (22) in an openable and closable manner; A machine cover (1) connected to the top surface opening (23) in an openable and closable manner; The vehicle also includes a battery block (6), wherein the battery block (6) is hinged on a rotating shaft on the vehicle frame body, and the battery block (6) can be rotated into the side opening (22) to laterally block part of the wall surface of the side opening (22), and cooperate with the side wall on the battery box (2) opposite to the side opening (22) to position the battery (10) in the battery box (2), and the battery block (6) can be rotated out of the side opening (22) to release the lateral blocking of the side opening (22); an elastic member is arranged between the battery block (6) and the vehicle frame body, and the restoring force of the elastic member makes the battery block (6) have a movement tendency to rotate into the side opening (22); The side door (4) is hinged to the frame body; a pull rope (66) is connected between the battery block (6) and the side door (4); when the side door (4) opens the side opening (22), the side door (4) pulls the battery block (6) out of the side opening (22) through the pull rope (66); when the side door (4) closes the side opening (22), the battery block (6) is rotated into the side opening (22) under the action of the restoring force of the elastic member; The rotating shaft is perpendicular to the side wall of the battery box (2) opposite to the side opening (22), and a baffle (43) is fixedly arranged on the side door (4); when the side door (4) closes the side opening (22), the baffle (43) is staggered with the battery block (6) at the extreme position of rotation in the direction of rotation into the side opening (22), and a part of the structure of the baffle (43) is located at the extreme position of rotation out of the battery block (6) in the direction of rotation out of the side opening (22).

2. The electric forklift frame according to claim 1, It is characterized in that The frame body is fixedly connected to the vehicle body top frame (3), and at least a portion of the structure of the vehicle body top frame (3) is located above the battery box (2); a lifting notch (31) is provided on the side of the vehicle body top frame (3), and the lifting notch (31) is provided through the vehicle body top frame (3) in the up-down direction and is aligned with at least a portion of the structure of the top surface opening (23) in the up-down direction.

3. The electric forklift frame according to any one of claims 1 or 2, It is characterized in that After the machine cover (1) closes the top opening (23) and the side door (4) closes the side opening (22), the top of the side door (4) extends upward into the interior of the machine cover (1).

4. The electric forklift frame according to any one of claims 1 or 2, It is characterized in that At least two roller assemblies (5) are sequentially arranged at the bottom in the battery box (2) along a direction away from the side opening (22). In the roller assembly (5), a roller shaft (53) and two rollers (52) are included. The rollers (52) are connected to the battery box (2) through the roller shaft (53), and the rollers (52) can rotate relative to the center line of the roller shaft (53). The outer diameter of the rollers (52) is larger than the outer diameter of the roller shaft (53), so that a fork insertion space (55) is formed in a part above the two roller shafts (53) and between the two rollers (52).

5. The electric forklift truck frame according to any one of claims 1 or 2, characterized in that the frame body includes a bottom plate (7), a neutral plate (8), a rear vertical plate (9) and middle side plates (71); the neutral plate (8), the middle side plates (71), and the rear vertical plate (9) are butt-jointed in sequence from front to back to form a U-shaped frame. The U-shaped frame is fixed above the bottom plate (7), and the battery box (2) is formed in the U-shaped frame. An opening on the U-shaped frame opposite to the middle side plate (71) is the side opening (22); Two first U-shaped brackets (21) extending in the front-rear direction are arranged in the battery box (2). The first U-shaped brackets (21) are buckled and fixed on the bottom plate (7) with the openings facing downwards, and the two first U-shaped brackets (21) are arranged in sequence along the left-right direction.

6. The electric forklift truck frame according to claim 5, characterized in that the bottom plate (7) extends forward beyond the neutral plate (8). The frame body further includes two front brackets (86) arranged in sequence along the left-right direction and located in front of the neutral plate (8); the front brackets (86) include second U-shaped brackets (85) and fenders (83) arranged in front of the second U-shaped brackets (85); the second U-shaped brackets (85) extend in the front-rear direction and are buckled and fixed on the bottom plate (7) with the openings facing downwards; the first U-shaped brackets (21) penetrate through the neutral plate (8) forward, extend into the second U-shaped brackets (85) and are fixedly connected to the fenders (83).

7. The electric forklift truck frame according to claim 6, characterized in that a front cross beam (84) is fixedly connected between the two front brackets (86). The front cross beam (84), the neutral plate (8) and the two front brackets (86) enclose a quadrilateral frame; the frame body further includes a rear cross beam (92) arranged at the rear side of the rear vertical plate (9) and two rear side plates (91) arranged between the rear cross beam (92) and the rear vertical plate (9). The two rear side plates (91) are arranged in sequence along the left-right direction. The rear cross beam (92), the rear vertical plate (9) and the two rear side plates (91) enclose a quadrilateral frame.

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