Full-free lifting portal frame for piling car

Abstract

The utility model discloses a full-free lifting portal frame for a piling car, which relates to the technical field of portal frames and comprises a frame and an outer portal frame, and the lower end of the outer portal frame is hinged to the frame. The inner door frame is embedded in the outer door frame, the inner door frame can vertically slide in the length direction of the outer door frame, and part of the inner door frame can extend out of the outer door frame; the fork arm carrier is embedded in the inner door frame through arranged mounting rollers and can vertically slide in the length direction of the inner door frame; the bottom of the lifting oil cylinder is connected to the lower part of the outer gantry; only the pallet fork body is lifted initially, the free lifting height is about 300 mm, short-distance carrying or placing of low-shelf goods is facilitated, after the piston rod abuts against the inner portal frame, the inner portal frame ascends at the half speed of the pallet fork frame, the lifting height can be gradually increased in the stage, the medium-height placing requirement is met, and the pallet fork frame ascends synchronously after moving to the top of the inner portal frame; goods can be smoothly conveyed to a high-layer goods shelf or stacking is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of portal, concretely is a full free lifting portal for stacking and piling car. BACKGROUND

[0002] Full free lifting portal is a type of stacking and piling car portal. Stacking and piling car portal is the main load-bearing structure of stacking and piling car material taking device, and is used for lifting goods.

[0003] The portal of common stacking and piling car is mostly two levels, and in the lifting process, the fork and the portal will be lifted at the same time, which can also carry and lift goods, but is used in lower places. For example, when working indoors or in a cabin or a container, the inner portal often hits the roof or the top of the container, so that the fork cannot be lifted to the specified height.

[0004] Therefore, the utility model discloses a full free lifting portal for stacking and piling car to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a full free lifting portal for stacking and piling car to solve the problems in the above background technology.

[0006] To solve the above technical problems, the utility model provides a full free lifting portal for stacking and piling car, which comprises a vehicle frame and an outer portal, the lower end of the outer portal is hinged to the vehicle frame, and comprises;

[0007] An inner portal is embedded in the outer portal, and the inner portal can vertically slide along the length direction of the outer portal, and part of the inner portal can extend out of the outer portal.

[0008] A fork frame is embedded in the inner portal and can vertically slide along the length direction of the inner portal through the installed rollers.

[0009] A lifting oil cylinder is connected to the lower part of the outer portal, and the piston rod connected to the telescopic end of the lifting oil cylinder can vertically move along the lead screw rod of the inner portal, and when the lifting oil cylinder is telescopic, the inner portal vertically moves relative to the outer portal.

[0010] At least two chain wheels are symmetrically arranged on the piston rod of the lifting oil cylinder, a chain is connected to the outer portal, and the other end of the chain passes through the chain wheels and is connected to the fork frame.

[0011] When the fork frame moves to the top of the inner portal, the inner portal and the fork frame are synchronously lifted.

[0012] Further, the inner portal is provided with fork roller, and the fork roller is embedded in the outer portal.

[0013] Further, the number of the lifting oil cylinders is at least three, and the axes of one of the lifting oil cylinders and the middle line of the outer gantry coincide with each other, and the other two are symmetrically arranged with respect to the middle line of the outer gantry.

[0014] Further, one side of the fork frame is connected with a fork body, and a plurality of pulleys are arranged on the fork body.

[0015] Further, one side of the outer gantry is connected with an inclination oil cylinder.

[0016] Further, the vertical moving speed of the inner gantry is half of that of the fork body.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] Only the fork body is lifted at the beginning, and the free lifting height is about 300mm, so that short-distance carrying or placing low-shelf goods is facilitated, the piston rod is on the inner gantry, the inner gantry is lifted at half the speed of the fork frame, the lifting height is gradually increased in this stage, the medium-height placing requirement is met, the fork frame is moved to the top of the inner gantry and is lifted synchronously, and the goods can be smoothly sent to a high-shelf or stacking is completed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an overall structural schematic view of the utility model;

[0020] Figure 2 It is a structural enlarged view of the middle A of the utility model; Figure 1

[0021] Figure 3 It is a structural enlarged view of the middle B of the utility model; Figure 1

[0022] Figure 4 It is a structural enlarged view of the middle C of the utility model. Figure 1

[0023] In the drawing: 1, inner gantry; 2, outer gantry; 3, fork frame; 4, fork body; 5, chain wheel; 6, chain; 7, lifting oil cylinder; 8, inclination oil cylinder; 9, fork frame roller. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. ​​​

[0025] Referring to Figures 1-4 The utility model provides a technical scheme: a full free lifting portal for stacking vehicle, including frame and outer portal 2, the lower end of outer portal 2 is hinged on frame, including;

[0026] Inner portal 1 is embedded in outer portal 2, and inner portal 1 can vertically slide along the length direction of outer portal 2, and part thereof can extend out of outer portal 2;

[0027] Pallet fork frame 3 is embedded in inner portal 1 by the installation roller arranged, and can vertically slide along the length direction of inner portal 1;

[0028] Lifting oil cylinder 7 is connected at the bottom of the lower part of outer portal 2, and the piston rod connected to the telescopic end of lifting oil cylinder 7 can vertically move along the lead screw of inner portal 1, and when lifting oil cylinder 7 telescopes, inner portal 1 vertically moves relative to outer portal 2;

[0029] Sprocket 5 is at least two, and is symmetrically arranged on the piston rod of lifting oil cylinder 7, and chain 6 is connected on outer portal 2, and the other end of chain 6 is connected with pallet fork frame 3 by passing sprocket 5;

[0030] When pallet fork frame 3 moves to the top of inner portal 1, inner portal 1 and pallet fork frame 3 are synchronously lifted, and one side of pallet fork frame 3 is connected with pallet fork body 4, a plurality of pulleys are arranged on pallet fork body 4, and the vertical moving speed of inner portal 1 is one half of the vertical moving speed of pallet fork body 4.

[0031] When lifting oil cylinder 7 starts to work, and the piston rod of the telescopic end moves upwards along the lead screw of inner portal 1, since the top of piston rod is provided with sprocket 5, one end of lifting chain 6 is fixed on outer portal 2, and the other end is connected with pallet fork frame 3 by passing sprocket 5, and the rising of piston rod will drive sprocket 5 to rise, and then pallet fork frame 3 is pulled upwards along inner portal 1 by chain 6, and pallet fork body 4 suspended on pallet fork frame 3 also rises. At this stage, only pallet fork body 4 is lifted, and inner portal 1 has not been lifted, and the maximum height of the lifting of pallet fork at this time is the free lifting height, and is generally about 300 mm or so;

[0032] With the continuous upward movement of piston rod, when piston rod reaches inner portal 1, the telescopic action of lifting oil cylinder 7 starts to drive inner portal 1 to vertically move relative to outer portal 2, that is, inner portal 1 starts to rise. At this time, the rising speed of inner portal 1 is one half of the rising speed of pallet fork, and the rising speeds of pallet fork and inner portal 1 are not synchronized;

[0033] When the fork carriage 3 moves to the top of the inner mast 1, the inner mast 1 and the fork carriage 3 can be lifted synchronously through the linkage of the chain 6 and the sprocket 5 and the upward movement of the inner mast 1 itself. After that, as the lifting cylinder 7 continues to extend and retract, the inner mast 1 and the fork carriage 3 will move upward together at the same speed and direction, thereby meeting the requirements for higher lifting heights, so as to carry out operations such as picking up, handling and stacking goods;

[0034] This setup can adapt well to the diverse needs for lifting height of goods in different scenarios. For example, in situations where goods only need to be slightly lifted for short-distance handling or placed on lower shelves, the free lifting height of the forks is sufficient, making the operation simple and efficient. However, when goods need to be lifted to higher positions, such as placing them on upper shelves or performing stacking operations, the subsequent synchronous lifting function of the inner mast 1 and fork carriage 3 can be fully utilized to ensure that the goods can smoothly reach the designated height, improving the flexibility and operability of the operation.

[0035] refer to Figure 1 The inner mast 1 is equipped with fork rollers 9, which are embedded in the outer mast 2.

[0036] In practice, the designed fork rollers 9 facilitate the vertical sliding of the inner gantry 1, thereby improving the stability of the inner gantry 1 during the sliding process.

[0037] See Figure 1 There are at least three lifting cylinders 7, all connected to the bottom of the outer gantry 2. The axis of one of them coincides with the vertical line of the outer gantry 2, and the other two are symmetrically arranged about the vertical line of the outer gantry 2.

[0038] In practice, the middle lifting cylinder 7 is used to lift the fork carriage 3 first. After the fork carriage 3 is raised to its highest position, the lifting cylinders 7 on both sides are lifted, and the entire inner mast 1 is fully lifted, and the middle fork carriage 3 is lifted.

[0039] See Figure 1 One side of the outer gantry 2 is connected to a tilting cylinder 8.

[0040] In practice, when the tilting cylinder 8 extends or retracts, the outer mast 2 is hinged to the middle of the tilting cylinder 8, causing it to tilt forward and backward under the action of the cylinder. This tilting action allows the outer mast 2 to tilt forward or backward, with a maximum forward tilt angle of approximately 4° and a backward tilt angle of approximately 12°. During the forklift and handling process, the mast angle can be adjusted to keep the goods stable, which is more conducive to picking up and stacking goods.

[0041] Working principle: During use, when the lifting cylinder 7 starts working, the piston rod at its telescopic end moves upward along the guide rod of the inner mast 1. Since the top of the piston rod is equipped with a sprocket 5, one end of the lifting chain 6 is fixed to the outer mast 2, and the other end passes around the sprocket 5 and is connected to the fork carriage 3. The rise of the piston rod will drive the sprocket 5 to rise, and then pull the fork carriage 3 upward along the inner mast 1 through the chain 6. The fork body 4 suspended on the fork carriage 3 also rises accordingly. At this stage, only the fork body 4 is raised, and the inner mast 1 is not raised yet. The maximum height that the fork can be raised at this time is the free lifting height, which is generally about 300 mm.

[0042] As the piston rod continues to move upward, when it reaches the inner mast 1, the extension and retraction of the lifting cylinder 7 begins to move the inner mast 1 vertically relative to the outer mast 2, meaning the inner mast 1 begins to rise. At this time, the rising speed of the inner mast 1 is half that of the forks, and the rising speeds of the forks and the inner mast 1 are not synchronized.

[0043] When the fork carriage 3 moves to the top of the inner mast 1, the inner mast 1 and the fork carriage 3 can be lifted synchronously through the linkage of the chain 6 and the sprocket 5 and the upward movement of the inner mast 1 itself. After that, as the lifting cylinder 7 continues to extend and retract, the inner mast 1 and the fork carriage 3 will move upward together at the same speed and direction, thereby meeting the requirements for higher lifting heights, so as to carry out operations such as picking up, handling and stacking goods;

[0044] This setup can adapt well to the diverse needs for lifting height of goods in different scenarios. For example, in situations where goods only need to be slightly lifted for short-distance handling or placed on lower shelves, the free lifting height of the forks is sufficient, making the operation simple and efficient. However, when goods need to be lifted to higher positions, such as placing them on upper shelves or performing stacking operations, the subsequent synchronous lifting function of the inner mast 1 and fork carriage 3 can be fully utilized to ensure that the goods can smoothly reach the designated height, improving the flexibility and operability of the operation.

Claims

1. A fully free-lifting gantry for a stacker truck, comprising a frame and an outer gantry (2), wherein the lower end of the outer gantry (2) is hinged to the frame, characterized in that, include; The inner frame (1) is embedded in the outer frame (2). The inner frame (1) can slide vertically along the length of the outer frame (2), and part of it can extend out of the outer frame (2). The fork carriage (3) is embedded in the inner mast (1) by means of the mounting rollers and can slide vertically along the length of the inner mast (1); The lifting cylinder (7) is connected at the bottom to the lower part of the outer gantry (2). The piston rod connected to the extension end of the lifting cylinder (7) can move vertically along the guide rod of the inner gantry (1). When the lifting cylinder (7) extends or retracts, the inner gantry (1) moves vertically relative to the outer gantry (2). At least two sprockets (5) are symmetrically arranged on the piston rod of the lifting cylinder (7). A chain (6) is connected to the outer mast (2). The other end of the chain (6) passes around the sprocket (5) and is connected to the fork carriage (3). When the fork carriage (3) moves to the top of the inner mast (1), the inner mast (1) and the fork carriage (3) are raised synchronously.

2. The fully free-lifting gantry for a stacker truck as described in claim 1, characterized in that: The inner mast (1) is provided with fork rollers (9), which are embedded in the outer mast (2).

3. The fully free-lifting gantry for a stacker truck as described in claim 1, characterized in that: The number of lifting cylinders (7) is at least three, all of which are connected to the bottom of the outer gantry (2). The axis of one of them coincides with the vertical line of the outer gantry (2), and the other two are symmetrically arranged about the vertical line of the outer gantry (2).

4. The fully free-lifting gantry for a stacker truck as described in claim 1, characterized in that: The fork carriage (3) is connected to a fork body (4) on one side, and the fork body (4) is provided with multiple pulleys.

5. The fully free-lifting gantry for a stacker truck as described in claim 1, characterized in that: One side of the outer gantry (2) is connected to a tilting cylinder (8).

6. The fully free-lifting gantry for a stacker truck as described in claim 1, characterized in that: The vertical movement speed of the inner mast (1) is half that of the fork body (4).

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