Portal frame assembly for forklift

Abstract

The utility model relates to the technical field of forklifts, and discloses a gantry assembly for a forklift, which comprises a forklift gantry main body, a lifting assembly of the forklift gantry main body is provided with a goods blocking frame, the rear part of the goods blocking frame is fixedly connected with two transverse plates, the transverse plates are fixedly provided with jacking hydraulic rods, and the jacking hydraulic rods are fixedly connected with the lifting assembly of the forklift gantry main body. A pushing plate is fixedly installed at the end of a piston of the jacking hydraulic rod, a lifting beam is fixedly connected to the pushing plate, supporting plates are fixedly connected to the two sides of the front portion of the lifting beam correspondingly, lead screws are rotationally connected to the supporting plates, a hydraulic motor is fixedly installed on one supporting plate and fixedly connected with the lead screws, and the hydraulic motor is fixedly connected with the lifting beam. The two sides of the lead screw are in threaded connection with moving blocks, the moving blocks are fixedly connected with special-shaped plates, and the lower ends of the special-shaped plates are fixedly connected with side stop levers. The side limiting structure of the forklift portal frame can be used in a matched mode according to the height and the width of goods, and universality is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of forklifts, and particularly relates to a gantry assembly for a forklift. Background Art

[0002] A forklift is a type of construction machinery. It refers to various wheeled handling vehicles for loading, unloading, stacking, short-distance transportation, and heavy object handling of palletized goods. Its main function is to lift and carry, and it can be widely used in engineering fields such as ports, production workshops, construction, roads, mines, etc.

[0003] For example, a gantry assembly for a forklift disclosed in the patent with publication number CN116216593B includes an inner gantry and an outer gantry. The outer gantry is slidably arranged on the inner gantry. Two sets of forks are arranged on the outer gantry. A lifting drive source is arranged on the inner gantry, and the output end of the lifting drive source is connected to the outer gantry to drive the forks to move. The gantry assembly for the forklift further includes a clamping device, which includes a clamping assembly and a triggering assembly. Two sets of clamping assemblies are arranged and are respectively located on both sides of the forks. The clamping assemblies are rotatably connected to the inner gantry. Two sets of triggering assemblies are arranged and are respectively corresponding to the clamping assemblies. The triggering assemblies are rotatably connected to the inner gantry, and one end of the triggering assembly is located above the forks. When the forks are separated from the goods, both the triggering assembly and the clamping assembly are reset.

[0004] In the actual use of the forklift gantry disclosed in the above embodiment, the applicant found that: the above uses side clamping members to limit and fix the left and right sides of the goods, thereby preventing the goods from slipping and tipping over. However, the height of the above clamping members is fixed and cannot be adjusted and adapted according to the height of the goods. At the same time, the range of left and right clamping is limited, and it is impossible to limit and fix goods of different widths. The versatility of the overall structure still needs to be improved. In order to solve the above problems, a gantry assembly for a forklift is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gantry assembly for a forklift in order to solve the above problems.

[0006] The technical solution adopted by the utility model is as follows: A gantry assembly for a forklift includes a forklift gantry main body. A goods retaining shelf is installed on the lifting assembly of the forklift gantry main body. Two cross plates are fixedly connected to the rear part of the goods retaining shelf. A jacking hydraulic rod is fixedly installed on the cross plates. The piston end of the jacking hydraulic rod is fixedly installed with a push plate. A lifting beam is fixedly connected to the push plate. Support plates are fixedly connected to both sides of the front part of the lifting beam. A lead screw is rotatably connected to the support plates. A hydraulic motor is fixedly installed on one of the support plates. The hydraulic motor is fixedly connected to the lead screw. Moving blocks are threadedly connected to both sides of the lead screw. A special-shaped plate is fixedly connected to the moving blocks. A side retaining rod is fixedly connected to the lower end of the special-shaped plate.

[0007] In a preferred embodiment, a fork carrier is fixedly connected to the lower part of the goods retaining shelf, and forks are mounted on the fork carrier.

[0008] In a preferred embodiment, vertical guide rods are slidably connected to both sides of the lifting beam. The lower ends of the vertical guide rods are fixedly connected to a support cross beam, and both ends of the support cross beam are fixedly installed on the goods retaining shelf. The upper ends of the vertical guide rods are fixedly installed on the goods retaining shelf.

[0009] In a preferred embodiment, external threads with opposite directions are provided on both sides of the lead screw.

[0010] In a preferred embodiment, a horizontal guide rod is slidably connected to the upper part of the moving block, and both ends of the horizontal guide rod are fixedly installed on the said support plate.

[0011] In a preferred embodiment, a rubber pad is provided on the contact surface between the side retaining rod and the goods.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, the jacking hydraulic rod drives the lifting beam on the push plate to move up and down, thereby driving the side retaining plate on the special-shaped plate to move up and down, so as to adjust the height of the side retaining rod according to the height of the goods for use. At the same time, according to the width of the goods, the hydraulic motor is started to drive the lead screw to rotate, and the lead screw drives the two moving blocks to move in opposite directions, thereby adjusting the left and right spacing of the two side retaining rods to adapt to goods of different widths. The side retaining rod of the whole structure can be adjusted according to the size of the goods, with better general adaptability and improved practicality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic side view structure diagram of the present utility model;

[0015] Figure 2 is a schematic three-dimensional structure diagram of the goods retaining shelf in the present utility model.

[0016] Markings in the figure: 1 - door frame body, 2 - goods retaining shelf, 3 - cross plate, 4 - jacking hydraulic rod, 5 - push plate, 6 - lifting beam, 7 - support plate, 8 - lead screw, 9 - hydraulic motor, 10 - moving block, 11 - special-shaped plate, 12 - side retaining rod, 13 - fork carrier, 14 - fork, 15 - vertical guide rod, 16 - support cross beam, 17 - horizontal guide rod, 18 - rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Apparently, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0018] The following will be combined with Figure 1 - Figure 2 to provide a detailed description of a mast assembly for a forklift in an embodiment of the present utility model.

[0019] Embodiment:

[0020] A mast assembly for a forklift provided by an embodiment of the present utility model, referring to Figures 1 to 2 as shown, includes a forklift mast main body 1. A goods retaining shelf 2 is installed on the lifting assembly of the forklift mast main body 1. The lower part of the goods retaining shelf 2 is fixedly connected with a fork carriage 13. A fork 14 is installed on the fork carriage 13. This structure, the forklift mast main body 1, the goods retaining shelf 2, and the fork 14 form a forklift lifting mechanism. Among them, the fork 14 is mainly used to fork objects, and the lifting structure on the forklift mast main body 1 drives the fork 14 to move up and down.

[0021] It should be noted that: the above-mentioned forklift mast main body 1 is composed of an angle-adjusting hydraulic rod, an inner mast, an outer mast, a lifting hydraulic rod, and a lifting chain. Its specific structure has been disclosed, and this application does not make improvements to it. Therefore, no more introduction will be made here.

[0022] Referring to Figures 1 to 2 as shown, two cross plates 3 are fixedly connected to the rear part of the goods retaining shelf 2. A jacking hydraulic rod 4 is fixedly installed on the cross plates 3. The piston end of the jacking hydraulic rod 4 is fixedly installed with a push plate 5. A lifting beam 6 is fixedly connected to the push plate 5. Both sides of the front part of the lifting beam 6 are fixedly connected with support plates 7. A lead screw 8 is rotatably connected to the support plates 7. External threads with opposite directions are arranged on both sides of the lead screw 8. A hydraulic motor 9 is fixedly installed on one of the support plates 7. The hydraulic motor 9 is fixedly connected with the lead screw 8. Moving blocks 10 are threadedly connected to both sides of the lead screw 8. A special-shaped plate 11 is fixedly connected to the moving blocks 10. A side retaining rod 12 is fixedly connected to the lower end of the special-shaped plate 11. In this structure, the side retaining rod 12 can be used to limit the left and right sides of the forked goods, thereby preventing the goods from slipping or collapsing from the side;

[0023] During use, the lifting hydraulic rod 4 drives the lifting beam 6 on the push plate 5 to move up and down, thereby driving the side baffle 12 on the special-shaped plate 11 to move up and down, so as to adaptively adjust the height of the side baffle rod 12 according to the height of the goods. At the same time, according to the width of the goods, the hydraulic motor 9 is started to drive the lead screw 8 to rotate, and the lead screw 8 drives the two moving blocks 10 to move in opposite directions, so as to adjust the left and right spacing of the two side baffle rods 12 to adapt to goods of different widths. The side baffle rod 12 of the whole structure can be adjusted according to the size of the goods, with better general adaptability and improved practicality of the structure.

[0024] Reference Figures 1 to 2 As shown, vertical guide rods 15 are slidably connected to both sides of the lifting beam 6. The lower ends of the vertical guide rods 15 are fixedly connected to a support cross beam 16. Both ends of the support cross beam 16 are fixedly installed on the goods retaining rack 2, and the upper ends of the vertical guide rods 15 are fixedly installed on the goods retaining rack 2. This structure uses the vertical guide rods 15 to guide the up and down movement of the lifting beam 6.

[0025] Reference Figures 1 to 2 As shown, a horizontal guide rod 17 is slidably connected to the upper part of the moving block 10. Both ends of the horizontal guide rod 17 are fixedly installed on the support plate 7. This structure uses the horizontal guide rod 17 to guide the movement of the moving block 10.

[0026] Reference Figures 1 to 2 As shown, a rubber pad 18 is provided on the contact surface between the side baffle rod 12 and the goods. This structure uses the rubber pad 18 to prevent the side baffle rod 12 from damaging the contact area of the goods.

[0027] The implementation principle of a mast assembly for a forklift in an embodiment of the present application is as follows: During use, when the forklift forks lift the goods, at this time, the lifting hydraulic rod 4 drives the lifting beam 6 on the push plate 5 to move up and down, thereby driving the side baffle 12 on the special-shaped plate 11 to move up and down, so as to adaptively adjust the height of the side baffle rod 12 according to the height of the goods. Then, according to the width of the goods, the hydraulic motor 9 is started to drive the lead screw 8 to rotate, and the lead screw 8 drives the two moving blocks 10 to move in opposite directions, so as to adjust the two side baffle rods 12 to clamp the article, thereby limiting the side of the goods.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mast assembly for a forklift, comprising a forklift mast body (1), characterized in that: A backstop (2) is installed on the lifting assembly of the forklift gantry body (1), and two cross plates (3) are fixedly connected to the rear of the backstop (2), and a lifting hydraulic rod (4) is fixedly installed on the cross plate (3), and a push plate (5) is fixedly installed on the piston end of the lifting hydraulic rod (4), and a lifting beam (6) is fixedly connected to the push plate (5), and both sides of the front of the lifting beam (6) are fixedly connected to support plates (7), and the support plates (7) are rotatably connected to the screw rod (8), and a hydraulic motor (9) is fixedly installed on one of the support plates (7), and the hydraulic motor (9) is fixedly connected to the screw rod (8), and the two sides of the screw rod (8) are threadedly connected with a moving block (10), and a special-shaped plate (11) is fixedly connected to the moving block (10), and the lower end of the special-shaped plate (11) is fixedly connected to a side stop rod (12).

2. A mast assembly for a forklift according to claim 1, characterized in that: A fork frame (13) is fixedly connected to the lower part of the shelf (2), and a fork (14) is installed on the fork frame (13).

3. A mast assembly for a forklift according to claim 1, characterized in that: Vertical guide rods (15) are slidably connected to both sides of the lifting beam (6); the lower ends of the vertical guide rods (15) are fixedly connected to support crossbeams (16); both ends of the support crossbeams (16) are fixedly mounted on the shelf (2); and the upper ends of the vertical guide rods (15) are fixedly mounted on the shelf (2).

4. A mast assembly for a forklift according to claim 1, characterized in that: External threads in opposite directions are arranged on both sides of the screw rod (8).

5. A mast assembly for a forklift according to claim 1, characterized in that: The upper part of the shift block (10) is slidably connected to a transverse guide rod (17), and both ends of the transverse guide rod (17) are fixedly mounted on the support plate (7).

6. A mast assembly for a forklift according to claim 1, characterized in that: A rubber pad (18) is provided on the contact surface between the side barrier bar (12) and the cargo.

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