Electric trolley for forklift assembling operation

Abstract

The invention discloses an electric trolley for forklift assembling operation, and particularly relates to the technical field of forklift assembly.The electric trolley comprises a frame assembly of a box frame structure, the frame assembly comprises a front frame and a rear frame, and the front frame and the rear frame are fixedly connected; a front supporting plate and a rear supporting plate are fixedly mounted on the upper surfaces of the front frame and the rear frame respectively, and a limiting block is fixedly mounted on the upper surface of the rear supporting plate; a front axle assembly is fixedly mounted on the lower surface of the top of the front frame through a front axle mounting bottom plate, and a rear axle assembly is fixedly mounted on the lower surface of the top of the rear frame through a rear axle mounting bottom plate. A box frame structure of the frame assembly is utilized, the width is small, the gravity center is low, stability is high, and operation safety is improved; an independent driving unit is adopted, and automatic walking is achieved; the rail wheels are utilized to ensure that the electric trolley runs on the rails, so that the running space is saved; and multiple safety protection functions are realized through various photoelectric switches and safety contact edges.

Description

Technical Field

[0001] The present invention relates to the technical field of forklift assembly, and more particularly to an electric trolley used for forklift assembly operations. Background Art

[0002] It is known that forklift assembly includes component assembly and whole vehicle assembly; and the whole vehicle assembly of forklift is first to install and fix the forklift frame on a fixed or mobile workbench, and then assemble the front axle, rear axle, engine, counterweight, mast, wheels, etc.; the common operation method currently used is the operation method of transfer and assembly on a fixed work platform, a non-powered trolley workbench or an automatic assembly line.

[0003] Among them, the Chinese patent application number: 202122227670.5 discloses a special electric trolley for forklift gantry line traction and assembly; this solution combines an electric trolley and a driven trolley into a working platform to realize multi-station operation on the production line; for the case of a long gantry, the electric trolley and the driven trolley use touch switches to avoid collisions between the trolleys.

[0004] However, in actual use, in the above scheme, since what is considered is the assembly and transportation of the forklift mast rather than the whole vehicle assembly of the forklift, as the forklift is assembled to a certain extent, the weight will gradually increase, and the electric trolley and the driven trolley are not an integrated structure, the amplitude of the shaking between the trolleys during the transportation and assembly process will also increase, and there is a risk of collision between the trolleys. Therefore, an electric trolley for forklift assembly operations is proposed as a further improvement to improve the safety of the electric trolley during forklift assembly operations. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an electric trolley for forklift assembly operations to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an electric trolley for forklift assembly operation, comprising a frame assembly of a box frame structure,

[0007] The frame assembly comprises: a front frame and a rear frame, wherein the front frame is fixedly connected to the rear frame;

[0008] A front support plate and a rear support plate for supporting a forklift frame are fixedly mounted on the upper surfaces of the front frame and the rear frame, respectively, and a limiting block for limiting the tail of the forklift frame is fixedly mounted on the upper surface of the rear support plate;

[0009] The lower surface of the top of the front frame is fixedly mounted with a front axle assembly via a front axle mounting base plate, and the lower surface of the top of the rear frame is fixedly mounted with a rear axle assembly via a rear axle mounting base plate.

[0010] Furthermore, a front photoelectric switch is fixedly mounted on one end of the front frame away from the rear frame via a front photoelectric switch mounting plate;

[0011] The front frame is fixedly mounted with a bottom photoelectric switch near the rear frame through a positioning photoelectric switch mounting plate;

[0012] The end of the rear frame away from the front frame is fixedly mounted with a reflector through a reflector mounting plate.

[0013] Furthermore, a key switch, an operation button, a charging brush plate and a safety contact edge are fixedly mounted on the end of the rear frame away from the front frame.

[0014] Furthermore, the front axle assembly and the rear axle assembly both include track wheels that roll along guide rails.

[0015] Furthermore, it also includes: a driving unit for driving the track wheel to rotate,

[0016] The driving unit is fixedly mounted on the lower surface of the top of the front frame through a driving unit mounting plate, and the driving unit mounting plate is located between the positioning photoelectric switch mounting plate and the front axle mounting bottom plate.

[0017] Furthermore, it also includes: a controller and an on-board lithium battery for providing power for the operation of the entire vehicle;

[0018] The controller is fixedly mounted on the lower surface of the top of the rear frame, and the vehicle-mounted lithium battery is fixedly mounted in the middle of the frame assembly and is located between the controller and the drive unit.

[0019] Technical effects and advantages of the present invention:

[0020] 1. Compared with the prior art, the shape of the frame assembly is set and a box frame structure is adopted, which has a narrow width, a low center of gravity, high stability, and improved operation safety; an independent drive unit is adopted, which can realize automatic walking after manual operation; the use of track wheels can ensure that the electric trolley runs on the track, saving operating space; safety protection is provided by a variety of photoelectric switches and safety touch edges, realizing multiple safety protection functions.

[0021] 2. Compared with the prior art, by setting up a vehicle-mounted lithium battery and a charging brush plate, using the vehicle-mounted lithium battery of the electric trolley, and using the charging brush plate located at the rear of the frame assembly, the rear charging saves space compared to the side charging, and at the same time ensures that the parts on the forklift are prevented from interfering with the charging pile during the assembly and operation process; thereby online charging is achieved, and working and charging are carried out simultaneously, saving time for separate or manual charging.

[0022] 3. The multi-vehicle and multi-station positioning technology is adopted. Multiple vehicles and multi-stations can run automatically. Each vehicle stops automatically at the next station. It can be started and stopped at any time according to production requirements. The working time of each station can be controlled at any time to improve the controllability of production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 The structure of the frame assembly of the present invention is shown in FIG. Figure 1 .

[0025] Figure 3 The structure of the frame assembly of the present invention is shown in FIG. Figure 2 .

[0026] Figure 4 It is a structural schematic diagram of the bottom of the frame assembly of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the top of the vehicle frame assembly of the present invention.

[0028] Figure 6 The structure of the frame assembly of the present invention is shown in FIG. Figure 3 .

[0029] Figure 7 It is a schematic structural diagram of the drive unit mounting plate of the present invention.

[0030] Figure 8 It is a schematic structural diagram of the rail wheel of the present invention.

[0031] Fig. 9 A state diagram is used for the present invention.

[0032] The accompanying drawings are marked as follows:

[0033] 1. Frame assembly;

[0034] 11. Front frame;

[0035] 111. front photoelectric switch mounting plate; 112. front photoelectric switch;

[0036] 113. Positioning photoelectric switch mounting plate; 114. Bottom photoelectric switch;

[0037] 115. drive unit mounting plate; 116. drive unit;

[0038] 12. Rear frame;

[0039] 121. reflector mounting plate; 122. reflector;

[0040] 123. Key switch; 124. Operation button; 125. Charging brush plate; 126. Safety touch edge;

[0041] 127. Controller;

[0042] 2. Front support plate; 3. Rear support plate; 4. Limit block;

[0043] 5. Front axle installation base plate; 6. Front axle assembly;

[0044] 7. Rear axle installation base plate; 8. Rear axle assembly;

[0045] 9. Track wheel; 10. On-board lithium battery. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention; the present invention is used for a mobile working platform of a forklift vehicle assembly production line, and is an electric trolley used to realize vehicle assembly operations.

[0047] As attached Figure 1 , 2 , 5, 6 and 9 show an electric trolley for forklift assembly operations, comprising a frame assembly 1 of a box frame structure,

[0048] The frame assembly 1 adopts a box frame structure in order to utilize its shape to make it have a low center of gravity and high overall stability during transportation; and because of its narrow width, the front and rear wheels of the forklift can be installed from both sides, thereby facilitating manual operation;

[0049] Among them, the frame assembly 1 is provided with one normally open and one normally closed contactor, which is used to realize automatic charging and discharging during vehicle operation;

[0050] The vehicle frame assembly 1 comprises: a front frame 11 and a rear frame 12, the front frame 11 and the rear frame 12 are fixedly connected;

[0051] A front support plate 2 and a rear support plate 3 for supporting the forklift frame are fixedly mounted on the upper surfaces of the front frame 11 and the rear frame 12, respectively. A limiting block 4 for limiting the tail of the forklift frame is fixedly mounted on the upper surface of the rear support plate 3.

[0052] The front support plate 2 is used to support the front part of the forklift frame, while ensuring that the forklift frame does not contact the front frame 11 of the frame assembly 1;

[0053] The rear support plate 3 is used to support the rear of the forklift frame, while ensuring that the forklift frame does not contact the rear frame 12 of the frame assembly 1;

[0054] The limiting block 4 is used to limit the tail of the forklift frame to prevent the frame from shifting during the forklift assembly process.

[0055] The front axle assembly 6 is fixedly mounted on the lower surface of the top of the front frame 11 via the front axle mounting base plate 5 , and the rear axle assembly 8 is fixedly mounted on the lower surface of the top of the rear frame 12 via the rear axle mounting base plate 7 .

[0056] Among them, the front axle assembly 6 and the rear axle assembly 8 play the role of bearing and guiding;

[0057] The front axle mounting base plate 5 is mounted on the lower surface of the top of the front frame 11 and is located at a position where the drive unit mounting plate 115 is away from the rear frame 12, that is, the front axle mounting base plate 5 is mounted at the front end of the frame assembly 1, and the front axle mounting base plate 5 is used to fix the front axle assembly 6;

[0058] The rear axle mounting base plate 7 is mounted on the lower surface of the top of the rear frame 12 and away from the front frame 11 , that is, the rear axle mounting base plate 7 is mounted at the rear of the frame assembly 1 for fixing the rear axle assembly 8 .

[0059] In a preferred embodiment, as shown in the attached Figure 1 , 3 , 4 and 6, the front photoelectric switch 112 is fixedly mounted on one end of the front frame 11 away from the rear frame 12 through the front photoelectric switch mounting plate 111;

[0060] A bottom photoelectric switch 114 is fixedly mounted on the front frame 11 near the rear frame 12 through a positioning photoelectric switch mounting plate 113;

[0061] A reflector 122 is fixedly mounted on one end of the rear frame 12 away from the front frame 11 via a reflector mounting plate 121 .

[0062] As a safety protection measure of the present invention, the front photoelectric switch 112 and the reflector 122 are used to realize position sensing automatic parking; that is:

[0063] The front photoelectric switch 112 is located at the front end of the frame assembly 1, and the reflector 122 is located at the rear end of the frame assembly 1. When two or more vehicles are running on the workstation, when they run to a set distance, the front photoelectric switch 112 works to stop the wheels of the subsequent electric vehicles, thereby playing a role of safety protection;

[0064] Among them, the bottom photoelectric switch 114 is located at one side of the bottom of the middle part of the frame assembly 1, and then the bottom photoelectric switch 114 acts on the positioning reflector inside the guide rail when working, realizing secondary deceleration and multi-station precise positioning, and the positioning accuracy can reach ±10mm;

[0065] For example: there are a front photoelectric switch 112 and a bottom photoelectric switch 114 on the frame assembly 1, and there are two reflectors arranged on the ground in a line with a certain distance between the front and rear of the reflectors. When the front photoelectric switch 112 and the bottom photoelectric switch 114 contact the first reflector, braking begins. After the electric trolley runs a short distance, the second front photoelectric switch 112 and the bottom photoelectric switch 114 contact the second reflector again, achieving secondary braking.

[0066] In a preferred embodiment, as shown in the attached Figure 1 As shown, a key switch 123, an operation button 124, a charging brush plate 125 and a safety contact edge 126 are fixedly mounted on the end of the rear frame 12 away from the front frame 11;

[0067] Among them; the end of the rear frame 12 away from the front frame 11 is the rear end of the frame assembly 1; the key switch 123 and the operation button 124 provided at the rear end of the frame assembly 1 are used as control buttons to realize manual operation; it can also be used for short-distance position adjustment;

[0068] Among them, the charging brush plate 125 is set as a metal brush plate, which can contact the ground charging pile. With the charging station sensing function, automatic charging can be realized. Rear charging saves space compared to side charging, and at the same time ensures that the parts on the forklift are prevented from interfering with the charging pile during the assembly operation; the safety touch edge 126 is used to increase the protection function.

[0069] In a preferred embodiment, as shown in the attached Figure 2 , 6 As shown in Figures 8 and 9, the front axle assembly 6 and the rear axle assembly 8 both include track wheels 9 that roll along the guide rails, so as to ensure that the electric trolley of the present invention moves in the guide rails.

[0070] In a preferred embodiment, as shown in the attached Figure 2 As shown, it also includes: a driving unit 116 for driving the track wheel 9 to rotate,

[0071] The driving unit 116 is fixedly mounted on the lower surface of the top of the front frame 11 through the driving unit mounting plate 115 , and the driving unit mounting plate 115 is located between the positioning photoelectric switch mounting plate 113 and the front axle mounting base plate 5 .

[0072] The drive unit 116 is located at the bottom of the front frame 11 away from the rear frame 12, and the drive unit 116 is the power driving component of the electric vehicle; and the drive unit mounting plate 115 is used to fix the drive unit 116;

[0073] In a preferred embodiment, as shown in the attached Figure 3 As shown, it also includes: a controller 127 and a vehicle-mounted lithium battery 10 for providing power for the operation of the entire vehicle;

[0074] The controller 127 is fixedly mounted on the lower surface of the top of the rear frame 12 , and the vehicle-mounted lithium battery 10 is fixedly mounted in the middle of the frame assembly 1 and is located between the controller 127 and the drive unit 116 .

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric trolley for forklift assembly operations, characterized in that: A vehicle frame assembly (1) comprising a box frame structure, The frame assembly (1) comprises: a front frame (11) and a rear frame (12), wherein the front frame (11) and the rear frame (12) are fixedly connected; A front support plate (2) and a rear support plate (3) for supporting a forklift frame are fixedly mounted on the upper surfaces of the front frame (11) and the rear frame (12), respectively; a limit block (4) for limiting the rear end of the forklift frame is fixedly mounted on the upper surface of the rear support plate (3); The lower surface of the top of the front frame (11) is fixedly mounted with a front axle assembly (6) via a front axle mounting base plate (5), and the lower surface of the top of the rear frame (12) is fixedly mounted with a rear axle assembly (8) via a rear axle mounting base plate (7).

2. The electric trolley for forklift assembly operation according to claim 1, characterized in that: A front photoelectric switch (112) is fixedly mounted on one end of the front frame (11) away from the rear frame (12) via a front photoelectric switch mounting plate (111); The front frame (11) is fixedly mounted with a bottom photoelectric switch (114) near the rear frame (12) via a positioning photoelectric switch mounting plate (113); One end of the rear frame (12) away from the front frame (11) is fixedly mounted with a reflector (122) via a reflector mounting plate (121).

3. The electric trolley for forklift assembly operation according to claim 1, characterized in that: A key switch (123), an operation button (124), a charging brush plate (125) and a safety contact edge (126) are fixedly mounted on the end of the rear frame (12) away from the front frame (11).

4. The electric trolley for forklift assembly operation according to claim 2, characterized in that: The front axle assembly (6) and the rear axle assembly (8) both include track wheels (9) that roll along the guide rails.

5. The electric trolley for forklift assembly operation according to claim 4, characterized in that: Also includes: a driving unit (116) for driving the track wheel (9) to rotate, The drive unit (116) is fixedly mounted on the lower surface of the top of the front frame (11) via a drive unit mounting plate (115), and the drive unit mounting plate (115) is located between the positioning photoelectric switch mounting plate (113) and the front axle mounting base plate (5).

6. The electric trolley for forklift assembly operation according to claim 5, characterized in that: Also includes: A controller (127) and a vehicle-mounted lithium battery (10) for providing power for the operation of the entire vehicle; The controller (127) is fixedly mounted on the lower surface of the top of the rear frame (12), and the vehicle-mounted lithium battery (10) is fixedly mounted in the middle of the frame assembly (1) and is located between the controller (127) and the drive unit (116).

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