CN-121026602-B - Load testing device of electric forklift

CN121026602BCN 121026602 BCN121026602 BCN 121026602BCN-121026602-B

Abstract

The invention relates to the technical field of production, processing and testing of new energy automobiles, and discloses a load testing device of an electric forklift, which can restore the actual stress state of a fork, improve the testing precision, realize automatic transfer and continuous testing of the fork and adapt to the requirements of high-efficiency industrialized testing. The system comprises a frame structure formed by a bottom plate, a first vertical plate, a second vertical plate and a top plate, wherein the first vertical plate is provided with a positioning hole, a plurality of rotating rollers are arranged in the hole to form a low-friction rolling surface, a supporting component is arranged on the bottom plate corresponding to the extending direction of the positioning hole, the supporting surface is flush with the rolling surface, the second vertical plate is connected with a feedback component through a driving component, the front end of a fork can be positioned, unlocked and pushed out, a fixing component is arranged right above the top plate corresponding to the supporting component and can clamp the tail end of the fork in a coordinated manner with the supporting component, the top plate is also provided with a downward-pressing testing component and can press a preset position of the fork, and during testing, the feedback component moves downward to avoid, is pressed down until the front end of the fork is in conflict with the feedback component, and the system records a load value.

Inventors

ZHANG PEIJIAN
MA GUANGBIN
XU YE
Bai Liqiu
YANG QIANG
Zhao Lexiao

Assignees

山东中机特种装备有限公司

Dates

Publication Date: 20260508
Application Date: 20250925

Claims (5)

1. The utility model provides an electric fork truck load testing arrangement, includes bottom plate (1), and bottom plate (1) top is connected and is supported with roof (13) through first riser (11) and second riser (12) of symmetrical arrangement jointly, its characterized in that: a positioning hole (111) for inserting a fork of the electric forklift is formed in the first vertical plate (11), a plurality of freely rotatable rotating rollers (14) are arranged in the positioning hole (111) at intervals in parallel, and the top surfaces of the rotating rollers (14) are flush and jointly form a rolling surface matched with the bottom surface of the fork; The supporting component (2) is arranged on the bottom plate (1) corresponding to the extending direction of the positioning hole (111), and the supporting surface and the rolling surface of the supporting component (2) are kept at the same horizontal plane; The second vertical plate (12) is connected with a feedback assembly (4) through a driving assembly (3), so that the feedback assembly (4) can translate to a preset receiving position and can receive and fix the front end of the fork or move back to a preset discharging position; A fixing component (5) is arranged on the top plate (13) corresponding to the position right above the supporting component (2), and after the feedback component (4) moves back to the discharging position, the fixing component (5) is matched with the supporting component (2) and fixes the tail end of the fork, and then the feedback component (4) moves downwards to be far away from the front end of the fork to form an avoidance space; The top plate (13) is also provided with a downward-pressing test assembly (6) matched with the feedback assembly (4), and when the front end of the fork is in conflict with the feedback assembly (4), the load value born by the fork at the moment is recorded, and a single load test is completed; The supporting component (2) comprises a supporting seat (21), a groove (211) is formed in the upper surface of the supporting seat (21), a first electromagnetic plate (22) is installed in the groove (211), the first electromagnetic plate (22) is electrified to fix the tail end of a fork after the feedback component (4) moves back to the discharging position, a supporting roller (23) is also installed in the groove (211), the supporting roller (23) is positioned on one side of the downward-pressing testing component (6), and the surface of the supporting roller is leveled with the upper surface of the first electromagnetic plate (22) to form a supporting surface for supporting and placing the fork; The driving assembly (3) comprises two groups of fixing seats (31) which are symmetrically arranged on the bottom plate (1) and the top plate (13) respectively, one group of fixing seats (31) comprises two symmetrically arranged fixing seats (31), a sliding rail (32) and a screw rod (33) are arranged between the two fixing seats (31), a moving plate (34) for installing the feedback assembly (4) is matched on the upper sliding rail (32) and the lower sliding rail (33) together with the screw rod (33), a first gear (35) is arranged at one end of the screw rod (33), a second gear (36) is meshed with the first gear (35), a rotating shaft (37) is connected with the second gear (36), and the two rotating shafts (37) are connected with a double-shaft speed reducer (38) arranged on the second vertical plate (12); The feedback assembly (4) comprises a mounting frame (41) arranged on the movable plate (34), a first telescopic cylinder (42) is vertically arranged on the mounting frame (41), a first pressure sensor (44) is arranged on the first telescopic cylinder (42) through a stable seat (43), a second electromagnetic plate (45) is arranged on the first pressure sensor (44), the second electromagnetic plate (45) is electrified at a receiving position and is powered off at a discharging position, a limiting seat (47) is further connected to the mounting frame (41) through a plurality of groups of horizontal springs (46) arranged, and the outer surface of the limiting seat (47) is an arc surface.
2. The electric forklift load testing device according to claim 1, wherein: the feedback assembly (4), the fixing assembly (5) and the pressing test assembly (6) are reset after the single load test is finished, and the driving assembly (3) drives the feedback assembly (4) to translate to the receiving position again to push out the fork.
3. The electric forklift load testing device according to claim 2, wherein: Two plugboards (24) are movably inserted into two sides of the supporting seat (21), the plugboards (24) are fixedly arranged on the top surface of the supporting seat (21) through positioning bolts (25) which are vertically connected with threads, the inner ends of the plugboards (24) extend into the grooves (211) and are respectively connected with a plurality of auxiliary rollers (26) in a rotating mode along the upper surface and the lower surface of the plugboards (24), and a rolling limiting channel is formed between the left auxiliary roller and the right auxiliary roller (26) and located above the supporting surface.
4. A load testing device for an electric forklift as claimed in claim 3, wherein: the fixing assembly (5) comprises a second telescopic cylinder (51) vertically arranged on the top plate (13), a second pressure sensor (53) is installed on the second telescopic cylinder (51) through a support (52), a base (54) is installed at the bottom of the second pressure sensor (53), and the bottom surface of the base (54) is a plane.
5. The electric forklift load testing device according to claim 4, wherein the downward-pressing testing assembly (6) comprises a third telescopic cylinder (61) vertically arranged on the top plate (13), the third telescopic cylinder (61) is connected with a shell (62), a third pressure sensor (63) and a vertical spring (64) arranged around the third pressure sensor (63) are arranged on the inner top surface of the shell (62), a sliding seat (65) is connected to the bottom end of the vertical spring (64) together, the sliding seat (65) is vertically and slidingly arranged in the shell (62), a sliding rod (66) is arranged at the bottom of the sliding seat, the bottom end of the sliding rod (66) penetrates through the shell (62) and extends to the lower portion of the shell (62) and is connected with a pressing seat (67) for pressing a fork, and the bottom surface of the pressing seat (67) is an arc surface.

Description

Load testing device of electric forklift Technical Field The invention relates to the technical field of production, processing and testing of new energy automobiles, in particular to a load testing device of an electric forklift. Background With the automatic upgrading in the fields of logistics storage, manufacturing industry and the like, the electric forklift has gradually replaced the traditional internal combustion forklift due to the advantages of environmental protection, low noise, high energy efficiency and the like, and becomes core equipment for cargo handling and stacking operation. In the production and detection links of the electric forklift, the fork is used as a core component for directly bearing the weight, and the load bearing capacity of the fork is directly related to the use safety and the operation reliability of the electric forklift, so that the accurate load test of the fork is a key procedure for guaranteeing the product quality. At present, the existing load testing device of the electric forklift in the industry generally adopts a simpler testing structure and mode, and is characterized in that a fork to be tested is directly placed on a platform, two ends of the fork are fixed through a fixing mechanism, then pressure is applied to the middle area of the fork through a pressing mechanism, so that the load bearing state of the fork in actual operation is simulated, and the load limit and the deformation resistance of the fork are detected. However, the conventional testing device and testing method have a plurality of obvious defects, and are difficult to meet the requirements of high precision and high efficiency. The fork is fixed for one end, the other end is unsettled when specific use, and traditional testing arrangement is fixed to fork both ends, can restrict the fork normal deformation trend in atress in-process when the test force is applyed from the middling, leads to stress not in predetermineeing the test area, makes the load value that the test obtained can't reflect the fork actual bearing capacity. Disclosure of Invention The invention aims to solve the problems in the background art, and further provides an electric forklift load testing device. The technical scheme adopted for solving the technical problems is as follows: A load testing device of an electric forklift comprises a bottom plate, wherein a top plate is connected with a second vertical plate through a first vertical plate and a second vertical plate which are symmetrically arranged, a positioning hole for inserting a fork of the electric forklift is formed in the first vertical plate, a plurality of freely rotatable rotating rollers are arranged in the positioning hole at intervals in parallel, the top surfaces of the rotating rollers are flush and jointly form a rolling surface matched with the bottom surface of the fork, a supporting component is arranged on the bottom plate in the extending direction of the corresponding positioning hole, the supporting surface of the supporting component and the rolling surface are kept on the same horizontal plane, a feedback component is connected to the second vertical plate through a driving component, so that the feedback component can translate to a preset receiving position and can bear and fix the front end of the fork, or move back to the preset discharging position, a fixing component is arranged on the top plate in the position corresponding to the supporting component, after the feedback component moves back to the discharging position, the fixing component is matched with the supporting component and fixes the tail end of the fork, the feedback component moves down far away from the front end of the fork to form a space, a downward test component matched with the feedback component is arranged on the top plate, the top plate is further connected with a feedback component, the feedback component is capable of being pushed down to bear a load value of the fork, and the load is tested by a single time. The above scheme is still further, feedback subassembly, fixed subassembly and pushing down test assembly all reset after single load test is ended, and drive assembly drives feedback subassembly translation to receiving the material position again, promotes the fork. The above scheme is still further, supporting component includes the supporting seat, and the recess has been seted up to the supporting seat upper surface, installs first electromagnetic plate in the recess, and first electromagnetic plate is electrified in order to fix the fork tail end after feedback component moves back to the blowing position, still installs the backing roll in the recess, and the backing roll is located and pushes down test component one side, and its surface is leveled with first electromagnetic plate upper surface in order to form the holding surface that is used for supporting to place the fork. The above scheme is still further, two picture peg have been inserted