Forklift gantry leveling device

Abstract

The utility model relates to the technical field of forklifts, and discloses a forklift gantry leveling device which comprises a forklift body, a gantry rotationally connected to the forklift body and an inclined oil cylinder installed between the forklift body and the gantry, a leveling assembly is longitudinally installed on the surface of the gantry and comprises a supporting column fixedly connected to the surface of the gantry, and the supporting column is fixedly connected to the surface of the gantry. An observation assembly is installed in the supporting column. The gantry inclination degree is automatically converted into the sliding distance of a sealing block through the contact state of a roller in the leveling assembly and the ground, the sliding distance is transmitted to the height difference of a sealing cylinder and a sealing plate of the observation assembly through a communicating pipe, the inclination direction and angle of the gantry can be visually reflected, quantitative reference is provided for design of a transparent plastic plate and a horizontal line, manual visual inspection errors are avoided, and the working efficiency is improved. In a normal state, the spring pushes the roller to abut against the ground, the gradient change of the ground can be sensed in real time through self-adaptive sliding of the roller, and the flexibility of the device in different scenes is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and more specifically to a forklift mast leveling device. Background Technology

[0002] Forklift mast leveling refers to adjusting relevant components of the forklift mast to keep the mast level with the ground during lifting and tilting, ensuring the stability and safety of the forklift during operation, as well as the accuracy of loading and unloading goods.

[0003] Currently, forklift mast leveling mainly relies on manual operation. For example, the utility model patent with announcement number CN222630971U also mentions this problem. The operator needs to raise the forks to eye level and visually compare the parallelism between the forks and the ground to determine whether the mast is tilted. If it is found to be tilted forward or backward, the operator operates the handle to activate the tilt cylinder, which pushes the mast to rotate in the opposite direction until the forks are visually level. This process often requires multiple adjustments to the fork height and cylinder stroke, and the leveling accuracy depends entirely on the operator's visual judgment and operating experience. Different operators will have significantly different results. When facing scenarios such as slope operation, heavy load conditions, or rapid docking in automated warehousing, the speed and accuracy of manual leveling are difficult to meet the actual needs. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a forklift mast leveling device to solve the problems existing in the background art.

[0005] The utility model provides the following technical solution: a forklift mast leveling device, including a forklift body, a mast rotatably connected to the forklift body, and a tilting cylinder installed between the forklift body and the mast, wherein a leveling component is longitudinally mounted on the surface of the mast;

[0006] The leveling assembly includes a support column fixedly connected to the surface of the gantry. An observation assembly is installed inside the support column. A sealing groove is opened inside the support column. A sealing block is slidably connected inside the sealing groove. A connecting rod is fixedly connected to the bottom of the sealing block. A support column is fixedly connected to the end of the connecting rod. A roller is rotatably connected inside the support column. The inside of the sealing groove is connected to the inside of the observation assembly.

[0007] Furthermore, the leveling assembly also includes a limiting groove formed inside the support column, a limiting plate slidably connected inside the limiting groove, the limiting plate being fixedly sleeved on the positioning outer surface of the connecting rod, a spring being movably installed inside the limiting groove, the top of the spring abutting against the inner wall of the limiting groove, the bottom of the spring abutting against the surface of the limiting plate, a connecting pipe being fixedly connected inside the support column, and long grooves being formed on both sides of the support column, with the outer surface of the support column slidably connected inside the long grooves;

[0008] The observation assembly includes a fixed box fixedly connected inside the support column. Inside the fixed box, two sealing cylinders are fixedly connected. Inside the sealing cylinders, sealing plates are slidably connected. An air outlet pipe is fixedly connected to the top of the fixed box. The inside of the sealing groove is connected to the bottom of the sealing cylinder through a connecting pipe.

[0009] Furthermore, the inner top of the sealing cylinder is connected to the top of the support column through an air outlet pipe, and a sealing ring is fixedly installed on the outer surface of the sealing plate.

[0010] Furthermore, a transparent plastic plate is fixedly connected to the front surface of the fixed box, and horizontal lines are equidistantly arranged on the surface of the transparent plastic plate.

[0011] Furthermore, under normal conditions, the spring's elasticity causes the limiting plate to slide downwards, and the bottom of the roller to rest against the ground, with the end of the support extending below the gantry.

[0012] Furthermore, the support column is L-shaped, and the limiting plate and the limiting groove are both square.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model automatically converts the tilt of the gantry into the sliding distance of the sealing block by adjusting the contact state between the rollers in the leveling component and the ground. This distance is then transmitted to the sealing cylinder of the observation component through a connecting pipe. The height difference of the sealing plate directly reflects the tilt direction and angle of the gantry. The transparent plastic plate and horizontal line design on the front surface of the observation component provide quantitative reference for operators, avoiding the subjective errors of traditional manual visual inspection. Especially under complex working conditions such as slopes and heavy loads, it can quickly and accurately determine the tilt direction, reduce the number of ineffective adjustments by the tilting cylinder, and significantly improve leveling efficiency.

[0015] 2. In this utility model, under normal conditions, the spring pushes the roller to always keep it against the ground through the limiting plate. Even if the forklift is operating on an uneven road surface, the adaptive sliding of the roller can ensure that the leveling component can sense changes in the ground slope in real time, and the operator can respond and adjust the angle in a timely manner, which enhances the flexibility of the device in different scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the connection between the gantry and the leveling assembly in this utility model;

[0018] Figure 3 This is a cross-sectional view of the leveling component in this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the support column and the observation component in this utility model;

[0020] Figure 5 This is a cross-sectional view of the observation component in this utility model.

[0021] The attached diagram is labeled as follows: 1. Forklift body; 2. Mast; 3. Tilting cylinder; 4. Leveling assembly; 41. Support column; 42. Observation assembly; 421. Fixing box; 422. Sealing cylinder; 423. Sealing plate; 424. Air outlet pipe; 43. Connecting pipe; 44. Sealing groove; 45. Sealing block; 46. Connecting rod; 47. Limiting groove; 48. Spring; 49. Limiting plate; 410. Support column; 411. Roller; 412. Long groove. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0023] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.

[0024] A forklift mast leveling device includes a forklift body 1, a mast 2 rotatably connected to the forklift body 1, and a tilting cylinder 3 installed between the forklift body 1 and the mast 2. A leveling component 4 is longitudinally mounted on the surface of the mast 2.

[0025] The leveling assembly 4 includes a support column 41 fixedly connected to the surface of the gantry 2. An observation assembly 42 is installed inside the support column 41. A sealing groove 44 is opened inside the support column 41. A sealing block 45 is slidably connected inside the sealing groove 44. A connecting rod 46 is fixedly connected to the bottom of the sealing block 45. A support column 410 is fixedly connected to the end of the connecting rod 46. A roller 411 is rotatably connected inside the support column 410. The interior of the sealing groove 44 is connected to the interior of the observation assembly 42.

[0026] In this embodiment, the tilt of the gantry 2 is converted into the sliding distance of the sealing block 45 in the sealing groove 44 by the roller 411 contacting the ground, and then transmitted to the observation component 42 through the connecting pipe 43 to realize the quantitative feedback of the tilt angle, avoid the error of manual visual inspection, and improve the leveling accuracy.

[0027] Specifically, the leveling component 4 also includes a limiting groove 47 opened inside the support column 41. A limiting plate 49 is slidably connected inside the limiting groove 47. The limiting plate 49 is fixedly sleeved on the positioning outer surface of the connecting rod 46. A spring 48 is movably installed inside the limiting groove 47. The top of the spring 48 abuts against the inner wall of the limiting groove 47, and the bottom of the spring 48 abuts against the surface of the limiting plate 49. A connecting pipe 43 is fixedly connected inside the support column 41. Long grooves 412 are opened on both sides of the support column 41. The outer surface of the support column 410 is slidably connected inside the long grooves 412.

[0028] The observation component 42 includes a fixed box 421 fixedly connected inside the support column 41. Two sealing cylinders 422 are fixedly connected inside the fixed box 421. A sealing plate 423 is slidably connected inside the sealing cylinder 422. An air outlet pipe 424 is fixedly connected to the top of the inside of the fixed box 421. The inside of the sealing groove 44 is connected to the bottom of the inside of the sealing cylinder 422 through a connecting pipe 43.

[0029] In this implementation scheme, under normal conditions, the spring 48 pushes the roller 411 to always be in contact with the ground through the limiting plate 49, adapting to uneven road surfaces, ensuring real-time perception of changes in ground slope, and enhancing the flexibility of the device. The pressure change in the sealing groove 44 is transmitted to the sealing cylinder 422 through the connecting pipe 43, pushing the sealing plate 423 to slide up and down, forming a height difference, which directly reflects the tilt direction of the gantry 2.

[0030] Specifically, the top of the inner part of the sealing cylinder 422 is connected to the top of the support column 41 through the air outlet pipe 424, and a sealing ring is fixedly installed on the outer surface of the sealing plate 423.

[0031] In this implementation scheme, internal air pressure buildup is prevented from affecting the sliding of the sealing plate 423, ensuring the reliability of tilt angle feedback. The sealing ring enhances the sealing performance between the sealing plate 423 and the inner wall of the sealing cylinder 422, preventing gas leakage from causing pressure transmission distortion and ensuring accurate leveling data.

[0032] Specifically, a transparent plastic plate is fixedly connected to the front surface of the fixed box 421, and horizontal lines are equidistantly arranged on the surface of the transparent plastic plate.

[0033] In this implementation scheme, the transparent plastic plate, together with the equidistant horizontal lines, transforms the height difference of the sealing plate 423 into visualized quantitative data (such as the number of grids deviating from the horizontal line corresponding to the tilt angle), assisting the operator in accurately judging the degree of tilt, reducing the ineffective adjustment of the tilting cylinder 3, and improving the leveling efficiency.

[0034] Specifically, under normal conditions, the elasticity of the spring 48 causes the limiting plate 49 to slide downwards, and the bottom of the roller 411 to rest against the ground, with the end of the support column 41 extending below the gantry 2.

[0035] In this implementation scheme, the protection device is always in working condition when the forklift is operating. It can sense changes in the ground without manual intervention, so that the roller 411 is close to the bottom of the mast 2. This allows the bottom of the roller 411 to have sufficient sliding length to contact the ground, and more directly reflects the actual tilt of the mast 2, avoiding feedback delays or errors caused by excessively high installation positions.

[0036] Specifically, the support column 410 is L-shaped, and the limiting plate 49 and the limiting groove 47 are both square.

[0037] In this embodiment, the "L"-shaped support column 410 provides a stable support structure, ensuring that when the roller 411 slides in the horizontal direction, the force in the vertical direction is transmitted to the sealing block 45, avoiding data deviation caused by structural shaking. The square design of the limiting plate 49 and the limiting groove 47 restricts the rotation of the connecting rod 46, ensuring that the sealing block 45 slides only vertically along the sealing groove 44, improving the accuracy of converting the tilt angle into the sliding distance.

[0038] The working principle and usage process of this utility model are as follows: When leveling is required, due to the elasticity of the spring 48, the limiting plate 49 drives the long groove 412 downward, allowing the bottom of the roller 411 to abut against the ground. If the ground has no slope, and both rollers 411 are in contact with the ground, the two sealing blocks 45 slide equal distances inside the sealing groove 44. Therefore, the pressure at the bottom of the two sealing cylinders 422 is equal, and the sliding height of the sealing plate 423 is equal, so no leveling operation is required. When the forklift body 1 is working uphill on a sloped road, after the two rollers 411 contact the ground, the left... The side roller 411 is higher than the roller 411, so the left sealing block 45 slides upward a greater distance than the right sealing block 45. At the same time, after the connection through the connecting pipe 43, the pressure at the bottom of the left sealing cylinder 422 is greater than the pressure at the bottom of the right sealing cylinder 422. The operator needs to start the tilting cylinder 3 and drive the tilting cylinder 3 to shorten, so that the top of the mast 2 rotates towards the forklift body 1 until the two sealing plates 423 are on the same horizontal line. During adjustment, the horizontal lines set at equal intervals on the surface of the transparent plastic plate can help the operator to operate accurately.

[0039] Conversely, when working downhill, the height of the right sealing plate 423 will be lower than the height of the left sealing plate 423. At this time, the tilting cylinder 3 can be extended to move the top of the mast 2 away from the forklift body 1.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A forklift mast leveling device, comprising a forklift body (1), a mast (2) rotatably connected to the forklift body (1), and a tilting cylinder (3) installed between the forklift body (1) and the mast (2), characterized in that: The surface of the gantry (2) is longitudinally equipped with a leveling component (4); The leveling component (4) includes a support column (41) fixedly connected to the surface of the gantry (2). An observation component (42) is installed inside the support column (41). A sealing groove (44) is opened inside the support column (41). A sealing block (45) is slidably connected inside the sealing groove (44). A connecting rod (46) is fixedly connected to the bottom of the sealing block (45). A support column (410) is fixedly connected to the end of the connecting rod (46). A roller (411) is rotatably connected inside the support column (410). The inside of the sealing groove (44) is connected to the inside of the observation component (42).

2. The forklift mast leveling device according to claim 1, characterized in that: The leveling component (4) also includes a limiting groove (47) opened inside the support column (41). A limiting plate (49) is slidably connected inside the limiting groove (47). The limiting plate (49) is fixedly sleeved on the positioning outer surface of the connecting rod (46). A spring (48) is movably installed inside the limiting groove (47). The top of the spring (48) abuts against the inner wall of the limiting groove (47), and the bottom of the spring (48) abuts against the surface of the limiting plate (49). A connecting pipe (43) is fixedly connected inside the support column (41). Long grooves (412) are opened on both sides of the support column (41). The outer surface of the support column (410) is slidably connected to the inside of the long grooves (412). The observation assembly (42) includes a fixed box (421) fixedly connected inside the support column (41). Two sealing cylinders (422) are fixedly connected inside the fixed box (421). A sealing plate (423) is slidably connected inside the sealing cylinder (422). An air outlet pipe (424) is fixedly connected to the top of the inside of the fixed box (421). The inside of the sealing groove (44) is connected to the bottom of the inside of the sealing cylinder (422) through a connecting pipe (43).

3. The forklift mast leveling device according to claim 2, characterized in that: The top of the inner end of the sealing cylinder (422) is connected to the top of the support column (41) through the air outlet pipe (424), and a sealing ring is fixedly installed on the outer surface of the sealing plate (423).

4. A forklift mast leveling device according to claim 2, characterized in that: A transparent plastic plate is fixedly connected to the front surface of the fixed box (421), and horizontal lines are equidistantly arranged on the surface of the transparent plastic plate.

5. A forklift mast leveling device according to claim 2, characterized in that: Under normal conditions, the spring (48) causes the limiting plate (49) to slide downwards and the bottom of the roller (411) to rest against the ground. The end of the support (41) extends to the bottom of the gantry (2).

6. A forklift mast leveling device according to claim 2, characterized in that: The support column (410) is "L" shaped, and the limiting plate (49) and the limiting groove (47) are both square.

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