Novel electric forklift frame structure

Abstract

The utility model discloses a novel electric forklift frame structure which comprises a frame. A battery frame is arranged on one side of the frame in the length direction of the frame, hydraulic boxes are symmetrically arranged on the other side of the frame, and a motor and hydraulic assembly mounting cavity, a hood with built-in electric control equipment and a heat dissipation device are sequentially arranged in the middle of the frame from front to back. The battery frame comprises at least one battery bin body which is arranged and fixed on the rear side of the frame; the open end of the battery bin body faces the outer side of the frame and is hinged to an outer door plate opened towards the outer side. The battery frame is divided into a battery bin body through a partition plate; the frame structure has the characteristics of reducing the counter weight of the battery, adjusting the gravity center and keeping balance and stability, and the outer door plate and the battery frame are locked when the outer door plate is closed through the limiting structure and the lock catch bracket which are respectively arranged on the battery frame and the partition plate, so that the convenient operation of repairing, maintaining and replacing the battery pack is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift structural arrangement, in particular to a novel electric forklift frame structure. Background Art

[0002] At present, the frame of an electric forklift is designed based on the internal combustion frame, and its battery pack is generally arranged inside the frame. However, for large-tonnage electric forklifts, in order to meet operational needs, the forklift battery pack is not only large in size but also heavy in weight. However, due to the problem of the frame structure, the problems existing in the existing electric forklift frame include: 1) The battery pack of the built-in lithium battery cannot be placed centrally, and because the battery pack is heavy, it is necessary to consider corresponding counterweights at symmetrical positions on the frame to maintain the structural balance and stability of the vehicle in the lateral and longitudinal directions; 2) Because the battery pack is placed inside the frame, it is inconvenient to take it out and put it in, which makes maintenance and servicing more difficult. Therefore, based on the problems existing in the existing electric forklift frame structure, it is necessary to improve the design of the electric forklift frame structure, so as to change the position of the battery compartment and the location of other components, so that the forklift battery pack can be placed in a centralized position and convenient for later replacement and maintenance, while reducing the counterweight requirements, thereby achieving vehicle weight reduction and reducing energy consumption. Utility Model Content

[0003] The purpose of this utility model is to provide a new electric forklift frame structure that solves the above technical problems.

[0004] To this end, the technical solution of this utility model is as follows:

[0005] A new electric forklift frame structure includes a frame; wherein,

[0006] A battery frame is provided on one side of the frame along the length of the frame; the battery frame includes at least one battery compartment body, which is arranged and fixed on the rear side of the frame; the open end of the battery compartment body faces the outside of the frame, and the open end is hinged to an outer door panel that opens outward; a hydraulic box is provided on the other side of the frame along the length of the frame, and is symmetrically arranged with the battery compartment body; a mounting cavity for arranging the motor and hydraulic components is provided on the front side of the middle position of the frame, and a hood with built-in electronic control equipment is provided on the rear side of the middle position of the frame, and a heat dissipation device is provided at the rear of the frame;

[0007] The battery frame is a hollow chamber with an open front end composed of a top plate, a bottom plate, a back plate and two side plates connected together, and the inner side of the chamber is divided into two battery compartments by a partition; a lock bracket is fixed on the end wall of the partition near the open end of the battery compartment; a horizontally protruding protrusion is provided at the middle position of the front end of the lock bracket, and female buckles are symmetrically fixed on both sides of the protrusion; the female buckle is a strip plate, the rear end of which is fixed on the protrusion, and a through hole is provided at its front end in the horizontal direction, and a guide slope is processed on the side wall surface of the front end of the female buckle; an embedded plate is formed on the upper edge of the side of the outer door panel that is not hingedly connected to the battery compartment body, and a snap fit with the through hole on the female buckle is provided on the outer panel surface of the embedded plate, so that when the outer door panel is closed, the embedded plate squeezes the female buckle so that the snap fits into the through hole through the guide slope and is embedded with the female buckle.

[0008] Furthermore, two pads are symmetrically arranged on both sides of the inner bottom plate of each battery compartment body, and the height of the two pads meets the fork entry size; a shock-absorbing pad is arranged on the top surface of each of the two pads, so that the battery pack is placed on the two pads through the shock-absorbing pad.

[0009] Furthermore, the upper edge side of the outer door panel extends obliquely upward toward the inner panel surface of the outer door panel and is formed with an upper limit plate, and the lower edge side of the outer door panel extends obliquely downward toward the inner panel surface of the outer door panel and is formed with a lower limit plate, so that when the outer door panel is closed, its upper limit plate and lower limit plate can be partially inserted into the inner side of the battery compartment body; correspondingly, a limiting buckle is provided on the upper inner wall located at the open end of the battery compartment body, and a stage is provided at the front end of the limiting buckle, so that the stage of the limiting buckle rests on the bottom surface of the upper limit plate of the outer door panel in the closed state.

[0010] Furthermore, two slide grooves are symmetrically opened on the bottom plate of the battery compartment body near its open end, and the two are spaced apart between two long shock-absorbing pads; the slide groove is a blind hole opened vertically downward from the bottom plate of the battery compartment body, and a telescopic spring and a sliding block are arranged on its inner side from bottom to top. The bottom end of the telescopic spring is fixed to the bottom of the slide groove, and the top end is fixed to the bottom surface of the sliding block, so that the sliding block is initially partially exposed to the outside of the slide groove under the support of the telescopic spring to prevent the battery pack in the battery compartment body from sliding to the outside of the battery compartment body.

[0011] Furthermore, a rope cavity is opened in the bottom plate of the battery compartment body, which runs from the bottom of each slide groove to the front end surface of the bottom plate; a pull rope is passed through the rope cavity, one end of the pull rope is fixed at the center of the bottom surface of the sliding block, and the other end is fixed to the inner panel surface of the outer door panel, so that when the outer door panel is opened, the pull rope is synchronously driven to pull the sliding block downward until it completely enters the slide groove.

[0012] Furthermore, a front axle and a rear axle are respectively provided at the front end and the rear end of the frame, and wheels are respectively installed on the front axle and the rear axle.

[0013] Furthermore, a front axle and a rear axle are respectively provided at the front end and the rear end of the frame, and wheels are respectively installed on the front axle and the rear axle.

[0014] Compared with the existing technology, the new electric forklift frame structure is based on the problems existing in the existing electric forklift frame structure. On the one hand, by arranging the battery compartment for setting the battery pack on the rear side of the frame and arranging the hydraulic box at a symmetrical position on the frame, it can not only effectively reduce the weight of the counterweight, but also the arrangement of the above two on the rear side of the frame can achieve the center of gravity to the rear to prevent tipping, and achieve the weight reduction of the whole vehicle while maintaining the balance and stability of the frame structure; on the other hand, the battery compartment body is an open structure with the open end facing outward, and by setting a limit structure and a hinged connection at the open end with an outer door panel that is easy to open and close and lock, convenient operation of battery pack repair, maintenance and replacement is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the new electric forklift frame structure of the present utility model;

[0016] Figure 2 This is a partial structural diagram of the new electric forklift frame structure of the present utility model;

[0017] Figure 3 This is a structural diagram of a new electric forklift frame structure of the present invention in which a sliding block is provided in a slide groove;

[0018] FIG4( a ) is a side view of an outer door panel of the new electric forklift frame structure of the present invention;

[0019] FIG4( b ) is a schematic structural diagram of a novel electric forklift frame structure according to the present invention, in which a limit buckle is arranged on a battery frame;

[0020] Figure 5 The battery frame of the novel electric forklift frame structure of the utility model is installed. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, the following embodiments are by no means intended to limit the present invention in any way.

[0022] Example 1

[0023] See also Figure 1 The new electric forklift frame structure includes a frame 100, and the front end and rear end of the frame 100 are respectively provided with a front axle and a rear axle, and wheels are installed on the front axle and the rear axle.

[0024] A battery frame 200 is provided on one side of the frame 100 along the length direction of the frame 100; the battery frame 200 includes at least one battery compartment body 201, which is located at a rear position between the front axle and the rear axle and is welded and fixed to the frame 100 to ensure the longitudinal stability of the frame 100; the open end of the battery compartment body 201 faces the outside of the frame 100, and the open end is hinged with an outer door panel 202, and the outer door panel 202 can be fully opened to the outside to ensure that the battery pack enters and exits the battery compartment body 201 without interference; two long strip shock-absorbing pads 203 are symmetrically provided on both sides of the inner bottom plate of each battery compartment body 201, so that the battery pack built into the battery compartment body 201 is set on the two long strip shock-absorbing pads 203 for battery pack shock absorption.

[0025] As a preferred technical solution of this embodiment, the two long shock-absorbing pads 203 in each battery compartment body 201 are arranged on two pads, and the two pads are fixed on the inner bottom plate of the battery compartment body 201, so that the height of the fork is reserved at the bottom of the battery compartment body 201, thereby enabling the battery pack to be forked in using the fork of a forklift.

[0026] A hydraulic box 300 is provided on the other side of the frame 100 along the length direction of the frame 100 , and is symmetrically arranged with the battery compartment 201 to improve the lateral stability of the vehicle body.

[0027] An installation cavity 101 is provided at the front middle of the vehicle frame 100 for arranging the motor and hydraulic components; the motor includes an oil pump motor and a traction motor; a hood 400 is provided at the rear middle of the vehicle frame 100, and the hood 400 has built-in electronic control equipment to achieve the purpose of waterproofing and dustproofing; a heat dissipation device is arranged at the rear of the vehicle frame.

[0028] In this embodiment, the battery pack of the forklift is centrally arranged on one side of the bottom of the frame 100 through the battery frame 200, and the hydraulic box 300 is arranged on the other side of the frame 100 symmetrical to the battery pack, so that the frame 100 is evenly stressed. Specifically, on the one hand, the battery compartment 201 has a large space and the battery pack is heavy. The battery is arranged as a whole at the rear, with the center of gravity positioned rearward to prevent tipping, and can effectively reduce the weight of the counterweight, thereby reducing the weight of the entire vehicle. A hinged door panel design is adopted on one side of the battery compartment 201, which is convenient for maintenance after opening the door panel. The motor and hydraulic components, electronic control equipment and heat dissipation device are arranged in sequence from front to back in the middle position of the frame 100 to improve the space utilization and stability of the frame 100.

[0029] Example 2

[0030] See also Figure 1, this embodiment is improved based on the structure of embodiment 1; for the convenience of description, for each structural component, the end close to the open end of the battery compartment body 201 is regarded as the front end, and the end away from the open end of the battery compartment body 201 is regarded as the rear end, and the following embodiments are the same; specifically, referring to Figure 4 (a) and Figure 4 (b), the upper edge side of the outer door panel 202 extends obliquely upward toward the inner plate surface of the outer door panel 202 and is formed with an upper limit plate 2021, and the lower edge side of the outer door panel 202 extends obliquely downward toward the inner plate surface of the outer door panel 202 and is formed with a lower limit plate 2022, so that when the outer door panel 202 is closed, its upper limit plate 2021 and the lower limit plate 2022 are connected. The plate 2022 can be partially inserted into the inner side of the battery compartment body 201; correspondingly, a limit buckle 204 is provided on the upper inner wall at the open end of the battery compartment body 201. The front end of the limit buckle 204 has a step. When the outer door panel 202 is rotated and closed at the open end of the battery compartment body 201, the step of the limit buckle 204 abuts against the bottom surface of the upper limit plate 2021 inserted into the battery compartment body 201. The step of the limit buckle 204 and the inner wall of the battery compartment body 201 clamp the upper limit plate 2021 of the outer door panel 202 on both sides, thereby improving the stability of the outer door panel 202 after closing and preventing the outer door panel 202 from opening due to vibration during forklift operation. The limit buckle 204 can be provided as one or more.

[0031] Example 3

[0032] See also Figure 1 and Figure 2, this embodiment is improved based on the structure of embodiment 1; specifically, the battery frame 200 is a hollow chamber with an open front end composed of a top plate, a bottom plate, a back plate and two side plates connected together, and the inside of the hollow chamber is separated into two adjacent battery compartments 201 by a vertical partition 205; a lock bracket 206 is vertically provided on the end wall of the partition 205 near the open end of the battery compartment 201; a horizontally outwardly protruding protrusion 207 is provided at the middle position of the front end of the lock bracket 206, and the protrusion 207 is symmetrically fixed on both sides. The female buckle 208 is a strip plate, and only the rear end thereof is fixed to the protrusion 207 by two screws 209. Therefore, the front end of the female buckle 208 has a certain elasticity and can be slightly bent toward the side away from the outer door panel 202 under the push or squeeze during the closing process of the outer door panel 202. A through hole 210 is opened in the horizontal direction at the front end of each female buckle 208, and a guide slope 211 is processed on the side wall surface near both sides of the front end wall, so that the front end of the female buckle 208 is pointed. Correspondingly, there is no electrical connection on the outer door panel 202. The upper edge of one side of the hinged connection of the tank body 201 extends obliquely toward the inner plate surface of the outer door panel 202 and forms an embedded plate. A snap 212 is provided on the outer plate surface of the embedded plate and matches the through hole 210 on the female buckle 208. When the outer door panel 202 is closed, the embedded plate on its side squeezes the female buckle 208 to bend. The snap 212 can slide into the through hole 210 through the guide slope 211 and be embedded with the female buckle 208 to achieve the closing and locking of the outer door panel 202. The outer door panel 202 is also provided with an inner buckle handle. In actual use, when a battery pack needs to be installed, the outer door panel 202 is opened and each battery pack is forked into each battery compartment body 201 using a forklift. Then, the outer door panel 202 is rotated closed so that the latch 212 engages with the through-hole 210 on the female latch 208 to close and lock the door. When the battery pack needs to be replaced, the female latch 208 has a certain elasticity. When the outer door panel 202 is pulled outward, the latch 212 squeezes the female latch 208 under the action of the pulling force, causing it to bend and disengage from the through-hole 210, thereby opening the outer door panel 202. In this embodiment, the provision of a locking mechanism between the outer door panel 202 and the battery compartment body 201 makes closing or opening the outer door panel 202 more convenient.

[0033] Example 4

[0034] See also Figure 1 、 Figure 2 and Figure 3This embodiment is an improvement on the structure of embodiment 1; specifically, two slide grooves 213 are symmetrically provided on the bottom plate near the open end of the battery compartment body 201, and the two slide grooves 213 are spaced apart between the two long strip shock-absorbing pads 203; the slide groove 213 is specifically a blind hole vertically downwardly provided from the bottom plate of the battery compartment body 201; a telescopic spring 215 and a sliding block 214 are sequentially provided in each slide groove 213 from bottom to top, the telescopic spring 215 is vertically provided, the bottom end of the telescopic spring 215 is fixed to the bottom of the slide groove 213, and the top end of the telescopic spring 215 is fixed to the bottom surface of the sliding block 214; in the initial state, the sliding block 214 is partially exposed to the outside of the slide groove 213 under the support of the telescopic spring 215 side, to prevent the battery pack in the battery compartment body 201 from sliding toward the outside of the battery compartment body 201; and when the battery pack needs to be taken out of the battery compartment body 201 or the battery pack needs to be sent into the battery compartment body 201, the sliding block 214 can be pressed down by the forklift fork, so that it can enter the inside of the slide groove 213 by compressing the telescopic spring 215, thereby completing the removal or delivery of the battery pack; as a preferred technical solution of this embodiment, the top of the sliding block 214 is processed into an arc-shaped top surface 216 to facilitate the removal and delivery of the battery pack, and in the process of taking out or delivering the battery pack, the sliding block 214 is exposed to the outside of the slide groove 213 in time, and the battery pack will not be damaged due to the existence of sharp corners.

[0035] Example 5

[0036] See also Figure 1 、 Figure 2 and Figure 3 This embodiment is an improvement on the structure of embodiment 4. Specifically, a rope cavity is provided in the bottom plate of the battery compartment body 201, which extends from the bottom of each chute 213 to the front end of the bottom plate. The rope cavity is specifically composed of a first rope pulling channel extending downward from the center of the bottom of the chute 213, and a second rope pulling channel extending horizontally from the bottom end of the first rope pulling channel and extending to the front end of the bottom plate. Figure 5When the outer door panel 202 is fully opened, the sliding block 214 is completely entered into the sliding groove 213, so that the sliding block 214 no longer has a limiting effect due to entering the sliding groove 213. At this time, whether the battery pack is taken out or put in, the sliding block 214 will not interfere with the movement, and the battery pack can be easily taken in and put in. When the battery pack is taken out or put in and the outer door panel 202 is closed again, the outer door panel 202 gradually approaches the open end of the battery compartment body 201 during the closing process. Therefore, the pull rope 217 with an action linkage relationship no longer applies tension to the sliding block 214 as the outer door panel 202 gradually closes. The sliding block 214 is reset to a state where it partially extends out of the slide groove 213 under the action of the telescopic spring 215; at this time, if the battery compartment body 201 has a built-in battery pack, the sliding block 214 limits the battery pack to prevent the battery pack from deviating toward the outer door panel 202 and knocking the outer door panel 202 open due to vibration during the driving of the forklift.

Claims

1. A new electric forklift frame structure, characterized in that: The invention comprises a vehicle frame (100); wherein a battery frame (200) is provided on one side of the vehicle frame (100) along the length direction of the vehicle frame (100); the battery frame (200) comprises at least one battery compartment (201) which is arranged and fixed on the rear side of the vehicle frame (100); the opening end of the battery compartment (201) faces the outside of the vehicle frame (100), and the opening end is hinged with an outer door panel (202) which opens outward; and a hydraulic box (201) is provided on the other side of the vehicle frame (100) along the length direction of the vehicle frame (100). 300), which is symmetrically arranged with the battery compartment body (201); a mounting cavity (101) for arranging the motor and hydraulic components is provided at the front side of the middle position of the vehicle frame (100); a hood (400) with built-in electronic control equipment is provided at the rear side of the middle position of the vehicle frame (100); a heat dissipation device is arranged at the rear of the vehicle frame; the battery frame (200) is a hollow chamber with an open front end formed by connecting a top plate, a bottom plate, a back plate and two side plates, and the inside of the chamber is separated into two battery compartment bodies (201) by a partition (205); A lock bracket (206) is fixed on the end wall of the partition (205) near the open end of the battery compartment body (201); a horizontal outwardly protruding block (207) is provided at the middle position of the front end of the lock bracket (206), and female buckles (208) are symmetrically fixed on both sides of the block (207); the female buckle (208) is a strip-shaped plate, the rear end of which is fixed on the block (207), and the front end of which is provided with a through hole (210) in the horizontal direction, and a guide slope (211) is processed on the side wall surface of the front end of the female buckle (208); An embedded plate is formed on the side edge of the plate (202) that is not hingedly connected to the battery compartment body (201) and extends obliquely in the direction of the inner plate surface of the outer door plate (202). A snap button (212) that matches the through hole (210) on the female buckle (208) is provided on the outer plate surface of the embedded plate, so that when the outer door plate (202) is closed, the embedded plate squeezes the female buckle (208) so that the snap button (212) slides into the through hole (210) through the guide inclined surface (211) and is embedded with the female buckle (208).

2. The new electric forklift frame structure according to claim 1 is characterized in that: Two pads are symmetrically arranged on both sides of the inner bottom plate of each battery compartment body (201), and the height of the two pads meets the fork insertion size; a shock-absorbing pad (203) is respectively arranged on the top surface of the two pads, so that the battery pack is placed on the two pads through the shock-absorbing pad (203).

3. The new electric forklift frame structure according to claim 1 is characterized in that: The upper edge of the outer door panel (202) extends obliquely upwards toward the inner panel surface of the outer door panel (202) and is formed with an upper limit plate (2021), and the lower edge of the outer door panel (202) extends obliquely downwards toward the inner panel surface of the outer door panel (202) and is formed with a lower limit plate (2022), so that when the outer door panel (202) is closed, the upper limit plate (2021) and the lower limit plate (2022) can be partially inserted into the inner side of the battery compartment body (201); correspondingly, a limit buckle (204) is provided on the upper inner wall of the opening end of the battery compartment body (201), and a platform is provided at the front end of the limit buckle (204), so that the platform of the limit buckle (204) is against the bottom surface of the upper limit plate (2021) of the outer door panel (202) in the closed state.

4. The new electric forklift frame structure according to claim 1 is characterized in that: Two slide grooves (213) are symmetrically provided on the bottom plate of the battery compartment body (201) near its open end, and the two slide grooves (213) are spaced apart and arranged between two long strip-shaped shock-absorbing pads (203); the slide groove (213) is a blind hole vertically downwardly provided from the bottom plate of the battery compartment body (201), and a telescopic spring (215) and a sliding block (214) are sequentially provided on the inner side thereof from bottom to top, the bottom end of the telescopic spring (215) is fixed to the bottom of the slide groove (213), and the top end is fixed to the bottom surface of the sliding block (214), so that the sliding block (214) is initially partially exposed to the outside of the slide groove (213) under the support of the telescopic spring (215), so as to prevent the battery pack in the battery compartment body (201) from sliding toward the outside of the battery compartment body (201).

5. The new electric forklift frame structure according to claim 4 is characterized in that: A rope cavity is provided in the bottom plate of the battery compartment body (201) and extends from the bottom of each chute (213) to the front end surface of the bottom plate; a pull rope (217) is passed through the rope cavity, one end of the pull rope (217) is fixed to the center of the bottom surface of the sliding block (214), and the other end is fixed to the inner side surface of the outer door panel (202), so that when the outer door panel (202) is opened, the pull rope (217) is synchronously driven to pull the sliding block (214) downward until it completely enters the chute (213).

6. The new electric forklift frame structure according to claim 1 is characterized in that: The front end and the rear end of the vehicle frame (100) are respectively provided with a front axle and a rear axle, and wheels are respectively installed on the front axle and the rear axle.

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