Four-stage portal frame of forklift

Abstract

The utility model discloses a four-stage portal frame of a forklift, which comprises a first frame body, a second frame body, a third frame body and a fourth frame body, the second frame body is arranged on the first sliding rail in a sliding mode, and a second sliding rail is arranged on the inner side of the second frame body; the third frame body is arranged on the second sliding rail in a sliding mode, and a third sliding rail is arranged on the inner side of the third frame body; and the fourth frame body is arranged on the third sliding rail in a sliding mode, and the fourth frame body is connected with a pallet fork. According to the four-stage gantry, under the condition of the same total lifting height, the four-stage gantry is lower than a single gantry body of the three-stage gantry, and the four-stage gantry has lower height, so that a forklift can shuttle at a position with lower height.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a four-stage door frame of a forklift. Background Art

[0002] A gantry is a structure configured on a forklift to drive the fork to rise and fall, such as a multi-stage gantry, which includes multiple frames. The lifting of the frames drives the fork to rise to achieve the loading and unloading of goods. The existing gantry is at most a three-stage gantry, that is, except for a fixed frame, the three-stage gantry has two sliding frames that can be raised and lowered, and the two sliding frames can drive the fork to rise and fall.

[0003] However, in daily use, people have found that the three-level gantry still has the following defects: in order to achieve a higher lifting height of the fork, the height of a single frame itself needs to be designed to be higher. As a result, even if all the frames are lowered to the lowest height, the height of the gantry is still the maximum height of the entire forklift, which makes it impossible for the forklift to pass through a lower door. In addition, the high height of a single frame will cause the center of gravity of the entire gantry to be too high, making driving unstable. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a four-stage mast of a forklift, which is used to solve the problem that the forklift mast in the prior art is too high to pass through areas with lower heights.

[0005] The technical solution adopted by the utility model to solve the technical problem is a four-stage gantry of a forklift, comprising:

[0006] A first frame, wherein a first slide rail is disposed on the inner side of the first frame;

[0007] a second frame, the second frame being slidably disposed on the first slide rail, and a second slide rail being disposed on an inner side of the second frame;

[0008] a third frame, the third frame being slidably disposed on the second slide rail, and a third slide rail being disposed on the inner side of the third frame;

[0009] The fourth frame is slidably arranged on the third slide rail, and the fourth frame is connected to the fork.

[0010] Further, the first frame, the second frame, the third frame and the fourth frame each include at least two columns;

[0011] A horizontal plate is also provided, and two ends of the horizontal plate are respectively connected to the two upright posts.

[0012] Furthermore, the column includes a main board and two side boards respectively arranged on both sides of the main board, and the side boards are arranged to protrude from the main board to form the first slide rail, the second slide rail or the third slide rail between the two side boards.

[0013] Furthermore, a plurality of pulleys are arranged on the outer side of the column, and the pulleys are arranged in the first slide rail, the second slide rail or the third slide rail.

[0014] Furthermore, the column on the fourth frame includes a main board and two side panels respectively arranged on both sides of the main board, and the side panels are protruding from the main board to form a fourth slide rail between the two side panels.

[0015] Furthermore, the first frame, the second frame, the third frame and the fourth frame are all the same in shape and size.

[0016] Furthermore, in the first frame, the second frame, the third frame and the fourth frame, two adjacent side panels are partially overlapped.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] The gantry includes four frames, namely, the first frame, the second frame, the third frame and the fourth frame. The first frame is a fixed frame, the second frame can be raised and lowered relative to the first frame, the third frame can be raised and lowered relative to the second frame, and the fourth frame is connected to the fork and can be raised and lowered relative to the third frame. In this way, the lifting of the second gantry, the third gantry or the fourth gantry can drive the lifting of the fork, which is a four-level gantry. Under the same total lifting height, the height of the four-level gantry is lower than that of a single frame of the three-level gantry. The four-level gantry has a lower height, so that the forklift can shuttle to a lower height position. At the same time, since the height of the four-level gantry is reduced, the center of gravity of the gantry is also reduced, the gantry has better stability, and the forklift is safer to drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a four-stage gantry from one perspective in the embodiment;

[0020] Figure 2 It is a structural schematic diagram of the four-stage gantry in another perspective in the embodiment;

[0021] Figure 3 It is a structural schematic diagram of a column from one perspective in the embodiment;

[0022] Figure 4 It is a structural schematic diagram of another perspective of the column in the embodiment;

[0023] In the figure:

[0024] 100. The first frame;

[0025] 200, second frame; 210, column; 211, main board; 212, side board; 213, pulley;

[0026] 300, the third frame;

[0027] 400, the fourth frame;

[0028] 500, horizontal board. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] Please refer to Figure 1-Figure 4 The utility model discloses a four-stage gantry of a forklift, comprising:

[0031] A first frame 100, wherein a first slide rail is disposed inside the first frame 100;

[0032] A second frame 200, wherein the second frame 200 is slidably disposed on the first slide rail, and a second slide rail is disposed inside the second frame 200;

[0033] a third frame 300, wherein the third frame 300 is slidably disposed on the second slide rail, and a third slide rail is disposed on the inner side of the third frame 300;

[0034] The fourth frame 400 is slidably disposed on the third slide rail, and the fourth frame 400 is connected to the fork.

[0035] Specifically, the gantry in the present application includes four frames, namely a first frame 100, a second frame 200, a third frame 300 and a fourth frame 400. The first frame 100 is a fixed frame, the second frame 200 can be raised and lowered relative to the first frame 100, the third frame 300 can be raised and lowered relative to the second frame 200, and the fourth frame 400 is connected to the fork and can be raised and lowered relative to the third frame 300. In this way, the lifting of the second gantry, the third gantry or the fourth gantry can drive the fork to rise and fall, that is, a four-stage gantry.

[0036] It is understandable that, under the same total lifting height, the height of the four-stage gantry is lower than that of the three-stage gantry. The four-stage gantry has a lower height, which enables the forklift to shuttle to a lower height. At the same time, since the height of the four-stage gantry is lowered, the center of gravity of the gantry is also lowered, the gantry has better stability, and the forklift is safer to drive.

[0037] Of course, when the height of a single frame is the same, the four-level gantry has a greater lifting height than the three-level gantry, which can enable the fork to be lifted to a higher position, making it easier to load and unload goods at higher positions.

[0038] Further, the first frame 100, the second frame 200, the third frame 300 and the fourth frame 400 each include at least two columns 210;

[0039] A horizontal plate 500 is also provided, and two ends of the horizontal plate 500 are respectively connected to the two upright posts 210 .

[0040] The horizontal plate 500 is arranged between the two upright posts 210 to enhance the connection strength between the two upright posts 210 and improve the stability of the entire portal frame.

[0041] Furthermore, the column 210 includes a main board 211 and two side panels 212 respectively arranged on both sides of the main board 211, and the side panels 212 are arranged to protrude from the main board 211 to form the first slide rail, the second slide rail or the third slide rail between the two side panels 212.

[0042] Furthermore, a plurality of pulleys 213 are disposed on the outer side of the column 210 , and the pulleys 213 are disposed in the first slide rail, the second slide rail or the third slide rail.

[0043] It should be noted that the slide rails and pulleys 213 on the column 210 only serve to guide or constrain the sliding direction of the frame, and no driving wheels are provided. A motor or cylinder is provided on the gantry to drive the gantry to lift.

[0044] Furthermore, the column 210 on the fourth frame 400 includes a main board 211 and two side panels 212 respectively disposed on both sides of the main board 211 , and the side panels 212 are disposed protruding from the main board 211 to form a fourth slide rail between the two side panels 212 .

[0045] Specifically, a fourth slide rail is provided on the fourth gantry, that is, a fifth gantry may be added so that the fifth gantry is slidably arranged in the fourth slide rail to increase the total lifting height of the entire gantry or reduce the height of a single frame.

[0046] Furthermore, the first frame 100 , the second frame 200 , the third frame 300 , and the fourth frame 400 are all the same in shape and size.

[0047] Specifically, all the frames are of the same size and shape, and there is no need to distinguish between the first frame 100, the second frame 200, the third frame 300 and the fourth frame 400, thereby reducing production costs and assembly costs.

[0048] Furthermore, in the first frame 100 , the second frame 200 , the third frame 300 , and the fourth frame 400 , two adjacent side panels 212 are partially overlapped.

[0049] Specifically, the side plates 212 between adjacent frames partially overlap, so that the multiple side plates 212 are staggered, thereby reducing the space occupied by the multiple side plates 212 in the width direction.

[0050] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A four-stage gantry for a forklift, characterized in that: include: A first frame, wherein a first slide rail is disposed on the inner side of the first frame; a second frame, the second frame being slidably disposed on the first slide rail, and a second slide rail being disposed on an inner side of the second frame; a third frame, the third frame being slidably disposed on the second slide rail, and a third slide rail being disposed on the inner side of the third frame; The fourth frame is slidably arranged on the third slide rail, and the fourth frame is connected to the fork.

2. A four-stage gantry for a forklift according to claim 1, characterized in that: The first frame, the second frame, the third frame and the fourth frame each include at least two columns; A horizontal plate is also provided, and two ends of the horizontal plate are respectively connected to the two upright posts.

3. A four-stage gantry for a forklift according to claim 2, characterized in that: The column includes a main board and two side boards respectively arranged on both sides of the main board, and the side boards are arranged to protrude from the main board to form the first slide rail, the second slide rail or the third slide rail between the two side boards.

4. A four-stage gantry for a forklift according to claim 2, characterized in that: A plurality of pulleys are arranged on the outer side of the column, and the pulleys are arranged in the first slide rail, the second slide rail or the third slide rail.

5. The four-stage gantry of a forklift according to claim 2, characterized in that: The column on the fourth frame includes a main board and two side boards respectively arranged on both sides of the main board, and the side boards are arranged to protrude from the main board to form a fourth slide rail between the two side boards.

6. A four-stage gantry for a forklift according to claim 5, characterized in that: The first frame, the second frame, the third frame and the fourth frame are all the same in shape and size.

7. The four-stage gantry of a forklift according to claim 5, characterized in that: In the first frame, the second frame, the third frame and the fourth frame, two adjacent side panels are partially overlapped.

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