Forklift weighing structure integrated with load sensor

Abstract

The invention discloses a forklift weighing structure integrated with a load sensor, and particularly relates to the technical field of forklifts, the forklift weighing structure comprises a door frame and a door plate embedded in the door frame, the door plate moves up and down in the door frame along the door frame, the inner side of the door plate is provided with a pallet fork supporting frame extending to the outer side, and the pallet fork supporting frame turns over and rotates on the door plate. A pallet fork assembly integrated with a load sensor is installed on the pallet fork supporting piece, and the pallet fork assembly can move on the pallet fork supporting piece to adjust the distance. By means of the fork assembly capable of being lifted up towards the upper portion of the front side, the loading device can be suitable for a more complex working environment, the weight of goods is obtained by weighing the goods in the loading area, weighing equipment does not need to be additionally arranged for weighing, the process is simple and convenient, the transfer efficiency is greatly improved, and use of a user is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and more specifically, to a forklift weighing structure with an integrated load sensor. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles for loading, unloading, stacking and short-distance transportation of palletized goods. Industrial handling vehicles are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, circulation centers and distribution centers, etc., for loading, unloading and handling of palletized goods in cabins, carriages and containers, and are indispensable equipment for pallet transportation and container transportation. Forklifts play a very important role in the logistics system of enterprises and are the main force in material handling equipment. They are widely used in various sectors of the national economy such as stations, ports, airports, factories, warehouses, etc. The rated lifting capacity of a forklift refers to the maximum weight of the goods allowed to be lifted when the distance from the center of gravity of the goods to the front wall of the cargo is not greater than the load center distance. When the center of gravity of the goods on the cargo exceeds the specified load center distance, the lifting capacity should be reduced accordingly due to the limitation of the longitudinal stability of the forklift.

[0003] Traditional transport vehicles cannot know the weight of the goods during the transfer process, and additional weighing equipment is required to obtain the weight. The additional weighing is rather cumbersome and greatly reduces the efficiency of transfer. Therefore, a transport vehicle weighing structure with an integrated weighing sensor is proposed. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a forklift weighing structure with an integrated load sensor, comprising a door frame and a door panel embedded in the door frame, the door panel moves up and down along the door frame in the door frame, a fork support frame extending to the outside is installed on the inner side of the door panel, the fork support frame flips and rotates on the door panel, a fork assembly with an integrated load sensor is installed on the fork support, and the fork assembly can be moved on the fork support to adjust the spacing.

[0005] In a preferred embodiment, the door frame includes two left and right outer profile frames, an equipment platform extending a distance to the rear is connected between the top ends of the two outer profile frames, several lifting cylinders are installed on the equipment platform, and a fixed plate is connected between the bottom ends of the two outer profile frames.

[0006] In a preferred embodiment, the door panel includes two left and right inner profile frames, which are respectively embedded in the inner sides of the two outer profile frames, a lifting platform is connected between the top ends of the two inner profile frames, and the top end of the output shaft of the lifting cylinder is fixedly connected to the lifting platform.

[0007] In a preferred embodiment, two inner plug-in boards extending from top to bottom are installed on the outer wall of the inner profile frame, and an outer plug-in board extending from top to bottom is installed on the inner wall of the outer profile frame. The outer plug-in board is located between the two inner plug-in boards and fits each other.

[0008] In a preferred embodiment, a limiting rod is further installed on the outer wall of the inner profile frame, and a limiting tube is further installed on the inner wall of the outer profile frame, and the bottom end of the limiting rod is inserted into the interior of the limiting tube.

[0009] In a preferred embodiment, the fork support frame includes a support frame located between two inner profile frames, the end of the support frame rotates on the inner profile frame through a hinge shaft, a fork front frame located on the front side of the inner profile frame is installed at the front end of the support frame, an equipment middle plate is installed in the middle of the fork front frame, a rotating shaft passes through the top of the equipment middle plate, and both ends of the rotating shaft extend to both sides of the fork front frame.

[0010] In a preferred embodiment, the fork assembly includes two forks, which are located on both sides of the middle plate of the equipment. The top ends of the forks are mounted on the rotating shaft and move along the rotating shaft. A load sensor is installed on the surface of the cargo loading area of ​​the forks. A limit rod is also passed through the middle plate of the equipment and the two forks, and both ends of the limit rod are fixed on both sides of the front frame of the forks.

[0011] In a preferred embodiment, two left and right sections of threads are installed on the outer wall of the rotating shaft, and the two sections of threads are symmetrically arranged through the middle plate of the equipment and in opposite directions. A servo motor is installed on the side wall of the fork front frame, and the end of the servo motor output shaft is connected to the rotating shaft.

[0012] In a preferred embodiment, a support frame is installed on the fork front frame located on the front side of the inner profile frame, and a support block that fits with the bottom end of the support frame is fixed on the front side wall of the inner profile frame.

[0013] In a preferred embodiment, an equipment plate is also connected between the two inner profile frames, a hydraulic push rod is installed on the equipment plate, and an insertion rod extending to both sides is installed at the end of the hydraulic push rod output shaft, a slide plate is fixed on the rear side wall of the equipment middle plate, a slide groove matching the insertion rod is opened on the slide plate, and the insertion rod is inserted into the inside of the slide groove.

[0014] Technical effects and advantages of the present invention:

[0015] The present invention can be applied to more complex working environments by means of a fork assembly that can be lifted upward and forward. The weight of the goods can be obtained by weighing the goods in the loading area without setting up additional weighing equipment. The process is simple and convenient, the transfer efficiency is greatly improved, and the use of users is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the door panel of the present invention after the door frame is raised.

[0018] Figure 3 It is a schematic diagram of the fork support frame and the fork object after being lifted up according to the present invention.

[0019] Figure 4 It is a schematic diagram of the rear structure of the present invention.

[0020] Figure 5 For the present invention Figure 1 Schematic diagram of the detailed structure at point A in the middle.

[0021] The accompanying drawings are marked as: 1 door frame, 2 door panel, 3 fork support frame, 4 fork assembly, 5 outer profile frame, 6 equipment platform, 7 lifting cylinder, 8 fixed plate, 9 inner profile frame, 10 lifting platform, 11 inner plug-in plate, 12 outer plug-in plate, 13 limit rod, 14 limit tube, 15 support frame, 16 fork front frame, 17 equipment middle plate, 18 rotating shaft, 19 fork, 20 load sensor, 21 limit rod, 22 thread, 23 support frame, 24 support block, 25 equipment plate, 26 hydraulic push rod, 27 plug rod, 28 slide plate, 29 slide groove, 30 servo motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1-5 A forklift weighing structure with an integrated load sensor 20 is shown, including a door frame 1 and a door panel 2 embedded in the door frame 1, the door panel 2 moves up and down along the door frame 1 in the door frame 1, a fork support frame 3 extending to the outside is installed on the inner side of the door panel 2, the fork support frame 3 flips and rotates on the door panel 2, a fork assembly 4 with an integrated load sensor 20 is installed on the fork 19 support member, and the fork assembly 4 is movable on the fork 19 support member for adjusting the spacing.

[0024] Based on the above, when in use, the transported goods are picked up by the fork assembly 4, and the weight information of the goods is obtained through the load sensor 20. At the same time, the door panel 2 moves up and down on the door frame 1, driving the fork support frame 3 and the fork assembly 4 to move up and down, so as to fork and transport the goods.

[0025] The door frame 1 includes two left and right outer profile frames 5, and an equipment platform 6 extending to the rear side for a distance is connected between the top ends of the two outer profile frames 5. A plurality of lifting cylinders 7 are installed on the equipment platform 6, and a fixing plate 8 is connected between the bottom ends of the two outer profile frames 5.

[0026] The door panel 2 includes two left and right inner profile frames 9, which are respectively embedded in the inner sides of the two outer profile frames 5. A lifting platform 10 is connected between the top ends of the two inner profile frames 9, and the top end of the output shaft of the lifting cylinder 7 is fixedly connected to the lifting platform 10.

[0027] like Figure 2 and Figure 5 As shown, the door panel 2 composed of two inner profile frames 9 is clamped between the door frames 1 composed of two outer profile frames 5. The door panel 2 moves up and down along the door frames 1. The lifting cylinder 7 works, and the output shaft of the lifting cylinder 7 lifts up or pulls down the lifting platform 10, driving the door panel 2 to move up and down between the door frames 1.

[0028] Two inner plug-in boards 11 extending from the top to the bottom are installed on the outer wall of the inner profile frame 9, and an outer plug-in board 12 extending from the top to the bottom is installed on the inner wall of the outer profile frame 5. The outer plug-in board 12 is located between the two inner plug-in boards 11 and fits with each other.

[0029] A limiting rod 2113 is also installed on the outer wall of the inner profile frame 9 , and a limiting tube 14 is also installed on the inner wall of the outer profile frame 5 , and the bottom end of the limiting rod 2113 is inserted into the interior of the limiting tube 14 .

[0030] Based on the above, during the lifting and lowering of the door panel 2, the outer plug-in plate 12 on the outer profile frame 5 moves up and down along the gap between the two inner plug-in plates 11, and the limiting rod 2113 moves up and down in the limiting tube 14 to limit the lifting and lowering of the door panel 2 and maintain the stability of the equipment.

[0031] The fork support frame 3 includes a support frame 15 located between two inner profile frames 9, and the end of the support frame 15 rotates on the inner profile frame 9 through a hinge shaft. A fork front frame 16 located on the front side of the inner profile frame 9 is installed at the front end of the support frame 15, and an equipment middle plate 17 is installed in the middle of the fork front frame 16. A rotating shaft 18 passes through the top of the equipment middle plate 17, and both ends of the rotating shaft 18 extend to both sides of the fork front frame 16.

[0032] like Figure 3 and Figure 4 As shown, the fork support frame 3 can partially rotate on the door panel 2, that is, the fork support frame 3 can drive the fork assembly 4 to lift up toward the front side on the door panel 2, and the support frame 15 rotates on the inner profile frame 9 through the hinge shaft to partially lift the fork support frame 3 and the fork assembly 4.

[0033] The fork assembly 4 includes two forks 19, which are located on both sides of the equipment middle plate 17. The top ends of the forks 19 are sleeved on the rotating shaft 18 and move along the rotating shaft 18. A load sensor 20 is installed on the surface of the cargo loading area of ​​the forks 19. A limit rod 2113 also penetrates the equipment middle plate 17 and the two forks 19, and the two ends of the limit rod 2113 are fixed on both sides of the fork front frame 16.

[0034] Based on the above, the load sensor 20 is placed in the loading area of ​​the fork 19 to directly weigh the goods and obtain the weight data information of the goods. Before use, the load sensor 20 needs to be calibrated through the forklift control system, and the equipment needs to be cleared and calibrated when it is empty.

[0035] The outer wall of the rotating shaft 18 is provided with two sections of threads 22 on the left and right sides, and the two sections of threads 22 are symmetrically arranged through the equipment middle plate 17 and in opposite directions. A servo motor 30 is installed on the side wall of the fork front frame 16 , and the output shaft end of the servo motor 30 is connected to the rotating shaft 18 .

[0036] Based on the above, the distance between the two forks 19 can be adjusted. The servo motor 30 drives the rotating shaft 18 to rotate. The threads 22 at both ends of the rotating shaft 18 are matched with the two forks 19 on both sides respectively. When the rotating shaft 18 rotates, the two forks 19 are driven to move away from or closer to each other along the direction of the limit rod 2113 and the rotating shaft 18 through the opposite threads 22 at both ends, thereby adjusting the distance between the forks 19.

[0037] A support frame 23 is installed on the fork front frame 16 located on the front side of the inner profile frame 9, and a support block 24 that fits with the bottom end of the support frame 23 is fixed on the front side wall of the inner profile frame 9;

[0038] Based on the above, when the fork support frame 3 is lowered and fits against the front side of the door panel 2, the support frame 23 on the rear side of the fork front frame 16 rests on the support block 24 to provide load-bearing support, thereby reducing the weight pressure at the connection between the support frame 15 and the inner profile frame 9 and improving the stability of the equipment.

[0039] An equipment plate 25 is also connected between the two inner profile frames 9, and a hydraulic push rod 26 is installed on the equipment plate 25. The end of the output shaft of the hydraulic push rod 26 is installed with a plug rod 27 extending to both sides. A slide plate 28 is fixed on the rear side wall of the equipment middle plate 17, and a slide groove 29 that matches the plug rod 27 is opened on the slide plate 28. The plug rod 27 is inserted into the inside of the slide groove 29;

[0040] Based on the above, the lifting of the fork support frame 3 on the front side of the door panel 2 is completed by the hydraulic push rod 26. When it is necessary to lift, the hydraulic push rod 26 works, and the plug rods 27 extending on both sides of the end of the output shaft thereof abut against the slide groove 29 in the slide plate 28, and push the fork front frame 16 and the support frame 15 of the fork support frame 3 upward, so that the support frame 15 and the fork front frame 16 rotate on the inner profile frame 9 through the hinge seat, so that the entire fork support frame 3 and the fork assembly 4 are partially lifted to the upper front side;

[0041] Furthermore, during the cargo handling process, although the fork 19 and the mast 1 of the forklift can be tilted backward at a certain angle to facilitate the fork 19 to lift the cargo, due to the existence of the forklift body behind the fork 19, the upward tilt angle of the fork 19 is limited. In the process of lifting some cargo with uneven bottoms, it is easy to fall off. Therefore, by setting a fork assembly 4 that can be lifted toward the upper front side, it can be suitable for more complex working environments, and the load sensor 20 is directly set to weigh the cargo in the loading area, and then the weight of the cargo is obtained, without the need to set up additional weighing equipment for weighing. The process is simple and convenient, which greatly improves the transportation efficiency and is convenient for users.

[0042] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0043] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0044] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forklift weighing structure with integrated load sensor, characterized in that: It includes a door frame and a door panel embedded in the door frame, the door panel moves up and down along the door frame, a fork support frame extending to the outside is installed on the inner side of the door panel, the fork support frame flips and rotates on the door panel, a fork assembly with an integrated load sensor is installed on the fork support, and the fork assembly is movable on the fork support to adjust the spacing.

2. The forklift weighing structure with integrated load sensor according to claim 1, characterized in that: The door frame includes two left and right outer profile frames, an equipment platform extending to the rear for a distance is connected between the top ends of the two outer profile frames, a plurality of lifting cylinders are installed on the equipment platform, and a fixing plate is connected between the bottom ends of the two outer profile frames.

3. The forklift weighing structure with integrated load sensor according to claim 2, characterized in that: The door panel comprises two left and right inner profile frames, which are respectively embedded in the inner sides of the two outer profile frames, a lifting platform is connected between the top ends of the two inner profile frames, and the top end of the output shaft of the lifting cylinder is fixedly connected to the lifting platform.

4. The forklift weighing structure with integrated load sensor according to claim 3, characterized in that: Two inner plug-in boards extending from the top to the bottom are installed on the outer wall of the inner profile frame, and an outer plug-in board extending from the top to the bottom is installed on the inner wall of the outer profile frame. The outer plug-in board is located between the two inner plug-in boards and fits each other.

5. The forklift weighing structure with integrated load sensor according to claim 3, characterized in that: A limiting rod is also installed on the outer wall of the inner profile frame, and a limiting tube is also installed on the inner wall of the outer profile frame, and the bottom end of the limiting rod is inserted into the interior of the limiting tube.

6. The forklift weighing structure with integrated load sensor according to claim 3, characterized in that: The fork support frame includes a support frame located between two inner profile frames, the ends of the support frame rotate on the inner profile frames through hinge shafts, a fork front frame located on the front side of the inner profile frames is installed at the front end of the support frame, an equipment middle plate is installed in the middle of the fork front frame, a rotating shaft passes through the top of the equipment middle plate, and both ends of the rotating shaft extend to both sides of the fork front frame.

7. The forklift weighing structure with integrated load sensor according to claim 6, characterized in that: The fork assembly includes two forks, which are located on both sides of the middle plate of the equipment. The top ends of the forks are mounted on the rotating shaft and move along the rotating shaft. A load sensor is installed on the surface of the cargo loading area of ​​the forks. A limit rod is also passed through the middle plate of the equipment and the two forks, and both ends of the limit rod are fixed on both sides of the front frame of the forks.

8. The forklift weighing structure with integrated load sensor according to claim 6, characterized in that: The outer wall of the rotating shaft is provided with two sections of left and right threads, which are symmetrically arranged through the middle plate of the equipment and in opposite directions. A servo motor is installed on the side wall of the fork front frame, and the end of the servo motor output shaft is connected to the rotating shaft.

9. The forklift weighing structure with integrated load sensor according to claim 6, characterized in that: A support frame is installed on the fork front frame located at the front side of the inner profile frame, and a support block that fits with the bottom end of the support frame is fixed on the front side wall of the inner profile frame.

10. The forklift weighing structure with integrated load sensor according to claim 6, characterized in that: An equipment plate is also connected between the two inner profile frames, and a hydraulic push rod is installed on the equipment plate. The end of the hydraulic push rod output shaft is installed with an insertion rod extending to both sides. A slide plate is fixed on the rear side wall of the equipment middle plate, and a slide groove matching the insertion rod is opened on the slide plate, and the insertion rod is inserted into the inside of the slide groove.

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