Portal frame system of narrow roadway forklift

Abstract

The utility model relates to the technical field of forklifts, and particularly discloses a portal frame system of a narrow roadway forklift, which is mounted on the forklift and comprises a portal frame, a mounting frame and a pallet fork, the bottom end of the portal frame is movably fixed on the forklift and can move along the horizontal direction, the mounting frame is arranged on the portal frame in a liftable manner, and the pallet fork is connected with the mounting frame. When the pallet fork ascends and descends through the mounting frame, the portal frame can drive the pallet fork to move horizontally, the portal frame is arranged on the forklift in the mode that the portal frame can move in the horizontal direction, the pallet fork can be driven to contract within the range of a forklift body through movement of the portal frame, the overall length of the forklift is shortened, and then the steering performance of the forklift in a narrow roadway is guaranteed; the pallet fork can perform lifting motion relative to the portal frame, namely translation and lifting are performed simultaneously, and the adjusting efficiency of the pallet fork is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift door frames, in particular to a door frame system of a narrow aisle forklift. Background Art

[0002] In order to increase the forking range of the fork of a conventional forklift, the fork is usually installed on the door frame through a mounting frame so that it can be raised and lowered, and the fork is installed on the mounting frame so that it can be horizontally moved, thereby realizing vertical and horizontal adjustments of the fork and increasing the forking range of the fork. However, the existing door frame is generally arranged on the front side of the chassis, and the fork is located at the front side of the door frame. However, for narrow aisle forklifts, fixing the door frame on the front side of the chassis will cause the fork to be located outside the chassis, which will cause the overall length of the forklift to be too long and inconvenient for turning. Installing the door frame on the rear side of the chassis will increase the forward distance required for the fork. At the same time, the lifting and translation of the fork can only be performed separately, and its movement efficiency is low. Summary of the invention

[0003] The present invention is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a gantry system for a narrow aisle forklift, which can shorten the overall length of the vehicle body and improve its steering performance. At the same time, the fork can be raised and lowered and translated at the same time, which can improve the displacement efficiency of the fork.

[0004] In order to achieve the above-mentioned object, the utility model provides a gantry system for a narrow aisle forklift, which is installed on the forklift and includes:

[0005] A gantry, the bottom end of which is movably fixed on the forklift and can move in the horizontal direction;

[0006] A mounting frame, which is escalably arranged on the door frame;

[0007] A fork is connected to the mounting frame, and when the fork is lifted or lowered by the mounting frame, the gantry can drive the fork to move horizontally.

[0008] According to the above-mentioned gantry system of a narrow aisle forklift, the forklift also includes a chassis and a driving wheel group located below the chassis, the driving wheel group is used to drive the chassis to move horizontally, the chassis is provided with a slide groove arranged along the length direction, and the bottom end of the gantry can be movably arranged in the slide groove.

[0009] According to the above-mentioned gantry system of a narrow aisle forklift, two slide grooves are provided, and two connecting parts are provided at the bottom of the gantry. The two connecting parts are slidably arranged in the two slide grooves respectively, and the slide grooves correspond to the forks one by one, and the forks can be lowered into the slide grooves.

[0010] According to the above-mentioned gantry system of a narrow aisle forklift, guide rails arranged along the length direction are provided on both sides of the slide groove, and first guide wheels are provided on both sides of the connecting portion, and the first guide wheels are connected to the guide rails.

[0011] According to the above-mentioned gantry system of a narrow aisle forklift, a limit block is provided at the front end of the guide rail, and the limit block can abut against the first guide wheel to limit the connection part from being separated from the slide groove.

[0012] According to the above-mentioned gantry system of a narrow aisle forklift, it also includes a drive motor fixed to the gantry, a drive sprocket is provided on the output shaft of the drive motor, a drive chain is provided on one side of the slide groove, and the drive sprocket is meshed with the drive chain.

[0013] The above-mentioned gantry system for a narrow aisle forklift further includes a lifting cylinder fixed on the gantry, and a piston rod of the lifting cylinder is connected to the mounting frame.

[0014] According to the above-mentioned gantry system of a narrow aisle forklift, guide grooves arranged in the vertical direction are provided on the opposite sides of the mounting frame, and second guide wheels are provided on the two inner sides of the gantry, and the second guide wheels are movably clamped in the guide grooves.

[0015] The utility model has the following beneficial effects: a gantry which can be moved horizontally is arranged on a forklift, and the fork can be retracted within the range of the forklift body by the movement of the gantry, thereby shortening the overall length of the forklift and ensuring its steering performance in narrow aisles; and when the gantry drives the fork to translate, the fork can perform a lifting and lowering movement relative to the gantry, that is, translation and lifting are performed simultaneously, thereby improving the adjustment efficiency of the fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0017] Figure 2 It is a schematic diagram of the assembly structure of the drive motor and the gantry of the embodiment.

[0018] In the figure:

[0019] 1. Gantry; 11. Connecting part; 111. First guide wheel; 12. Second guide wheel; 2. Mounting frame; 21. Guide groove; 3. Fork; 4. Chassis; 41. Slide groove; 411. Guide rail; 412. Limit block; 5. Driving motor; 51. Driving sprocket; 52. Driving chain; 6. Lifting cylinder. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-2 As shown, a gantry system of a narrow aisle forklift is installed on the forklift, including a gantry 1, a mounting frame 2 and a fork 3. The bottom end of the gantry 1 is movably fixed on the forklift and can move in the horizontal direction. The mounting frame 2 is arranged on the gantry 1 in a liftable manner, and the fork 3 is connected to the mounting frame 2. When the fork 3 is lifted and lowered through the mounting frame 2, the gantry 1 can drive the fork 3 to move horizontally. By arranging the gantry 1 in a horizontally movable manner on the forklift, the fork 3 can be retracted within the range of the forklift body through the movement of the gantry 1, thereby shortening the overall length of the forklift, thereby ensuring its steering performance in narrow aisles, and when the gantry 1 drives the fork 3 to translate, the fork 3 can be lifted and lowered relative to the gantry 1, that is, translation and lifting are performed simultaneously, thereby improving the adjustment efficiency of the fork 3.

[0022] Specifically, the forklift also includes a chassis 4 and a driving wheel group located below the chassis 4, the driving wheel group is used to drive the chassis 4 to move horizontally, the chassis 4 is provided with a slide groove 41 arranged along the length direction, the bottom end of the door frame 1 can be movably arranged in the slide groove 41, and the moving direction of the door frame 1 is limited by the slide groove 41 for guidance.

[0023] In order to ensure the stability of the horizontal movement of the gantry 1, two slide grooves 41 are provided. Two connecting parts 11 are provided at the bottom of the gantry 1. The two connecting parts 11 are slidably arranged in the two slide grooves 41 respectively, and the slide grooves 41 correspond to the forks 3 one by one. The forks 3 can be lowered into the slide grooves 41. Both sides of the slide grooves 41 are provided with guide rails 411 arranged along the length direction. Both sides of the connecting part 11 are provided with first guide wheels 111. The first guide wheels 111 are connected to the guide rails 411. The two connecting parts 11 are moved by the first guide wheels 111. The two-point support is more stable and the movement stability is better.

[0024] In order to prevent the connecting portion 11 from being separated from the sliding groove 41 , a limiting block 412 is provided at the front end of the guide rail 411 . The limiting block 412 can abut against the first guide wheel 111 to limit the connecting portion 11 from being separated from the sliding groove 41 .

[0025] In order to provide power for the horizontal movement of the gantry 1, the gantry 1 system also includes a driving motor 5 fixed on the gantry 1, and a driving sprocket 51 is provided on the output shaft of the driving motor 5, and a driving chain 52 is provided on one side of the slide groove 41. The driving sprocket 51 is meshed with the driving chain 52. When the driving motor 5 is working, it drives the driving sprocket 51 to rotate. Since the driving sprocket 51 is meshed with the driving chain 52, the driving sprocket 51 drives the gantry 1 to move along the arrangement direction of the driving chain 52.

[0026] In order to provide power for the lifting of the fork 3, it also includes a lifting cylinder 6 fixed on the door frame 1. The piston rod of the lifting cylinder 6 is connected to the mounting frame 2. The lifting cylinder 6 drives the mounting frame 2 to move up and down. At the same time, in order to guide the mounting frame 2, guide grooves 21 arranged in the vertical direction are provided on the opposite sides of the mounting frame 2. Second guide wheels 12 are provided on both inner sides of the door frame 1. The second guide wheels 12 are movably clamped in the guide grooves 21. When the mounting frame 2 is lifted or lowered, its second guide wheels 12 can rotate along the guide grooves 21.

[0027] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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 gantry system for a narrow aisle forklift, which is installed on the forklift, characterized in that: include: A gantry, the bottom end of which is movably fixed on the forklift and can move in the horizontal direction; A mounting frame, which is escalably arranged on the door frame; A fork is connected to the mounting frame, and when the fork is lifted or lowered by the mounting frame, the gantry can drive the fork to move horizontally.

2. A gantry system for a narrow aisle forklift according to claim 1, characterized in that: The forklift also includes a chassis and a driving wheel group located below the chassis, the driving wheel group is used to drive the chassis to move horizontally, the chassis is provided with a slide groove arranged along the length direction, and the bottom end of the door frame can be movably arranged in the slide groove.

3. A gantry system for a narrow aisle forklift according to claim 2, characterized in that: There are two slide grooves, and two connecting parts are provided at the bottom of the door frame. The two connecting parts are slidably arranged in the two slide grooves respectively, and the slide grooves correspond to the forks one by one, and the forks can be lowered into the slide grooves.

4. A gantry system for a narrow aisle forklift according to claim 3, characterized in that: Guide rails arranged along the length direction are provided on both sides of the slide groove, and first guide wheels are provided on both sides of the connecting portion, and the first guide wheels are connected to the guide rails.

5. A gantry system for a narrow aisle forklift according to claim 4, characterized in that: A limit block is provided at the front end of the guide rail, and the limit block can abut against the first guide wheel to limit the connection part from being separated from the slide groove.

6. The gantry system of a narrow aisle forklift according to claim 2, characterized in that: It also includes a driving motor fixed on the door frame, a driving sprocket is arranged on the output shaft of the driving motor, a driving chain is arranged on one side of the sliding groove, and the driving sprocket is meshed with the driving chain.

7. The gantry system of a narrow aisle forklift according to claim 1, characterized in that: It also includes a lifting cylinder fixed on the door frame, and a piston rod of the lifting cylinder is connected to the mounting frame.

8. The gantry system of a narrow aisle forklift according to claim 7, characterized in that: The mounting frame is provided with guide grooves arranged in a vertical direction on two opposite sides thereof, and the door frame is provided with second guide wheels on both inner sides thereof, and the second guide wheels are movably clamped in the guide grooves.

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