Forklift mast connecting structure and forklift

Abstract

The utility model relates to the field of forklift equipment, and provides a forklift door frame connecting structure and a forklift, which comprises a first hinge seat, a second hinge seat and a third hinge seat, the second hinge seat is arranged on a drive axle of the forklift body, the second hinge seat is rotationally connected with the first hinge seat, the second hinge seat is located on the side, close to the forklift portal frame, of the drive axle, and the rotating center of the second hinge seat is lower than that of the drive axle. According to the arrangement, the rotating center of the first hinge seat and the rotating center of the second hinge seat form the rotating center of the portal frame, the second hinge seat is located on the side, close to the forklift portal frame, of the drive axle, and the rotating center of the second hinge seat is lower than the rotating center of the drive axle, so that a forward-backward tilting rotating shaft of the portal frame and a center shaft of the drive axle are not coaxially arranged any more; and the rotating shaft of the portal frame descends and moves forwards, so that the stress condition of the inclined oil cylinder is improved, meanwhile, the operation space is increased, the portal frame is convenient to mount and dismount, and the maintainability of the portal frame is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift equipment, in particular to a forklift door frame connection structure and a forklift. Background Art

[0002] The gantry is the executive component of the forklift for loading, unloading, stacking and handling operations. It bears the entire weight of the goods, so the connection between the gantry and the vehicle body is crucial.

[0003] The common connection method between the mast and the body of forklifts currently on the market is the "bridge-holding type", that is, the mast rotation axis is coaxially arranged with the central axis of the drive axle, and the mast is driven to rotate under the drive of the tilt cylinder to achieve forward and backward tilting of the mast.

[0004] However, this arrangement causes the gantry's rotation center to be too high, resulting in greater force on the tilt cylinder, and the "bridge-holding" connection method makes it inconvenient to disassemble and maintain the gantry. Utility Model Content

[0005] The utility model aims to provide a forklift mast connection structure and a forklift, so as to solve the problems in the prior art that the forklift mast and the vehicle body adopt a "bridge-holding" connection method, which causes the mast rotation center position to be too high, the tilt cylinder to be subjected to greater force, and the mast is inconvenient to disassemble and maintain.

[0006] In order to achieve the above-mentioned object, the utility model provides a forklift mast connection structure for connecting the forklift mast and the vehicle body, comprising:

[0007] A first hinged seat is arranged on the forklift mast;

[0008] The second articulated seat is arranged on the driving axle of the vehicle body, the second articulated seat is rotatably connected to the first articulated seat, the second articulated seat is located on the side of the driving axle close to the forklift mast, and the rotation center of the second articulated seat is lower than the rotation center of the driving axle.

[0009] According to the forklift gantry connection structure provided by the utility model, the first articulated seat includes:

[0010] A pair of first connecting ears are spaced apart along the length direction of the forklift gantry, the second articulated seat is inserted between the pair of first connecting ears, the pair of first connecting ears and the second articulated seat are rotatably connected via an articulated shaft, and the pair of first connecting ears and the second articulated seat are correspondingly provided with articulated holes adapted to the articulated shaft.

[0011] According to the forklift gantry connection structure provided by the utility model, the second articulated seat includes:

[0012] A second connecting ear is rotatably connected to the hinge shaft, and the second connecting ear is provided with the hinge hole;

[0013] A bushing is arranged in the hinge hole, and the bushing is sleeved outside the hinge shaft.

[0014] According to the forklift mast connection structure provided by the utility model, the first connecting ear is configured as a semicircular structure, and the first connecting ear and the hinge shaft are correspondingly provided with mounting holes for inserting fasteners, and the fasteners are sequentially inserted into the first connecting ear and the hinge shaft.

[0015] The forklift gantry connection structure provided by the utility model also includes:

[0016] An oil nozzle is arranged on the articulated shaft, and is used to inject lubricating oil. The articulated shaft is provided with an oil passage, and one end of the oil passage is connected to the oil nozzle;

[0017] An oil storage tank is arranged along the circumference of the hinge shaft, and the oil storage tank is connected with the other end of the oil channel.

[0018] According to the forklift gantry connection structure provided by the utility model, the number of the oil nozzles is at least two, and the oil nozzles are provided at both ends of the hinge shaft.

[0019] According to the forklift mast connection structure provided by the utility model, the number of the oil passages is at least two, and the oil passages are distributed at intervals along the circumference of the hinge shaft.

[0020] According to the forklift mast connection structure provided by the utility model, the bushing is provided with a limiting flange, the second connecting ear is provided with a limiting groove matched with the limiting flange, and the limiting flange abuts against the limiting groove.

[0021] According to the forklift gantry connection structure provided by the utility model, the number of the first articulated seats is at least two, the first articulated seats are spaced apart along the length direction of the forklift gantry, and the second articulated seats are arranged in one-to-one correspondence with the first articulated seats.

[0022] The utility model also provides a forklift, comprising the forklift door frame connection structure as described in any one of the above items.

[0023] The forklift gantry connection structure provided by the utility model is used to connect the forklift gantry and the vehicle body, including: a first articulated seat, which is arranged on the forklift gantry; a second articulated seat, which is arranged on the driving axle of the vehicle body, the second articulated seat is rotatably connected with the first articulated seat, the second articulated seat is located on the side of the driving axle close to the forklift gantry, and the rotation center of the second articulated seat is lower than the rotation center of the driving axle. In this way, the rotation centers of the first articulated seat and the second articulated seat form the rotation center of the gantry, and the second articulated seat is located on the side of the driving axle close to the forklift gantry, and the rotation center of the second articulated seat is lower than the rotation center of the driving axle, so that the front and rear tilting rotation axis of the gantry is no longer coaxially arranged with the central axis of the driving axle, and the rotation axis position of the gantry is lowered and moved forward, thereby improving the force condition of the tilt cylinder, while increasing the operating space, facilitating the installation and disassembly of the gantry, and improving the maintainability of the gantry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an exploded view of the forklift door frame connection structure provided by the utility model;

[0026] Figure 2 It is a side view of the forklift door frame connection structure provided by the utility model;

[0027] Figure 3 It is a cross-sectional view of the forklift door frame connection structure provided by the utility model;

[0028] Figure 4 It is a partial schematic diagram of a forklift mast provided by the utility model;

[0029] Figure 5 It is a structural schematic diagram of the drive axle provided by the utility model;

[0030] Figure 6 yes Figure 1 Partial schematic diagram at point A in the middle;

[0031] Figure 7 It is a structural schematic diagram of the hinge shaft provided by the utility model;

[0032] Reference numerals:

[0033] 1: first articulated seat; 11: first connecting ear; 2: second articulated seat; 21: second connecting ear; 211: limiting groove; 22: bushing; 221: limiting flange; 3: articulated shaft; 31: oil channel; 32: oil storage tank; 4: articulated hole; 5: fastener; 6: mounting hole; 7: oil nozzle; 8: forklift mast; 81: lower crossbeam; 9: drive axle; 91: bridge housing; 10: tilt cylinder. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Combine the following Figures 1 to 7 The utility model describes a forklift door frame connection structure.

[0036] like Figures 1 to 7 As shown, the embodiment of the utility model provides a forklift mast connection structure for connecting the forklift mast 8 with the vehicle body, including a first articulated seat 1 and a second articulated seat 2. Specifically, as Figure 1 As shown, the first articulated seat 1 is arranged on the forklift mast 8. Specifically, the first articulated seat 1 is fixedly mounted on the bottom of the outer mast, for example, it can be welded to ensure that the two are firmly connected. In addition, a lower cross beam 81 is also provided at the bottom of the outer mast to strengthen the structural strength of the hinge. The second articulated seat 2 is arranged on the drive axle 9 of the vehicle body. Specifically, the second articulated seat 2 is fixedly mounted on the bridge housing 91, for example, it can be welded to ensure that the two are firmly connected. In the example above, the first articulated seat 1 is rotatably connected to the second articulated seat 2 to enable the forklift mast 8 to tilt forward and backward relative to the drive axle 9. It should be noted that, as shown in the figure, Figure 1 As for the placement position of the forklift mast connection structure shown in the figure, the lower end in the figure is the bottom.

[0037] like Figure 2 As shown, the second articulated seat 2 is located on the side of the driving axle 9 close to the forklift mast 8, and the rotation center C of the second articulated seat 2 is lower than the rotation center E of the driving axle 9, that is, the rotation center C of the second articulated seat 2 is located at the lower side of the front end of the driving axle 9. Specifically, as Figure 2As shown, the two ends of the tilt cylinder 10 are hinged to the forklift mast 8 and the vehicle body respectively, and form a hinge point B and a hinge point D. The mast and the vehicle body of a conventional forklift adopt a "bridge-hugging" connection method, that is, the rotation center of the mast coincides with point E in the figure, and the mast rotates around point E under the action of the tilt cylinder 10. In the present embodiment, the rotation center of the forklift mast 8 is located at point C, and the forklift mast 8 rotates around point C under the action of the tilt cylinder 10. Obviously, by comparing the triangle BED and the triangle BCD formed by each hinge point, it can be seen that compared with the traditional "bridge-hugging" connection method, the forklift mast connection structure in this embodiment significantly increases the force arm of the tilt cylinder 10, and thus the force of the tilt cylinder 10 is correspondingly reduced. Thereby, the force condition of the tilt cylinder 10 can be effectively improved, the service life of the equipment can be extended, and the welding requirements and processing requirements for the forklift mast 8 can also be reduced. It should be noted that, with the following Figure 2 As for the placement position of the forklift mast connection structure shown in the figure, the left end in the figure is the front end, and the up and down directions in the figure are the up and down positions.

[0038] In this way, the rotation centers of the first articulated seat 1 and the second articulated seat 2 form the rotation center of the forklift mast 8, and the second articulated seat 2 is located on the side of the drive axle 9 close to the forklift mast 8, and the rotation center of the second articulated seat 2 is lower than the rotation center of the drive axle 9, so that the front and rear tilt rotation axes of the forklift mast 8 are no longer coaxially arranged with the central axis of the drive axle 9, and the rotation axis position of the forklift mast 8 is lowered and moved forward, thereby improving the stress condition of the tilt cylinder 10 and increasing the operating space, facilitating the installation and disassembly of the forklift mast 8, and improving the maintainability of the forklift mast 8.

[0039] In the embodiment of the utility model, the first hinge seat 1 includes a pair of first connecting ears 11, such as Figure 3 As shown, a pair of first connecting ears 11 are spaced apart along the length direction of the forklift mast 8, and the second articulated seat 2 is inserted between the pair of first connecting ears 11. The pair of first connecting ears 11 and the second articulated seat 2 are rotatably connected through the articulated shaft 3, and the pair of first connecting ears 11 and the second articulated seat 2 are correspondingly provided with articulated holes 4 adapted to the articulated shaft 3, and the articulated shaft 3 is sequentially passed through each articulated hole 4. Such an arrangement can improve the structural strength of the connection and ensure that the first articulated seat 1 and the second articulated seat 2 are reliably connected. It should be noted that, as shown in FIG. Figure 3 As for the placement position of the forklift mast connection structure shown in the figure, the left and right direction in the figure is the length direction of the forklift mast 8.

[0040] Further, in the embodiment of the utility model, the second articulated seat 2 includes a second connecting ear 21, and the second connecting ear 21 is rotatably connected to the articulated shaft 3. Specifically, the second connecting ear 21 is provided with an articulated hole 4, and the articulated shaft 3 is passed through the articulated hole 4. Such an arrangement forms a "hanging ear articulated" connection mode, which has a simple structure, is convenient for disassembly and assembly, and is easy to process and manufacture.

[0041] Meanwhile, the second hinge seat 2 further comprises a bushing 22, which is wear-resistant. The bushing 22 is arranged in the hinge hole 4, and the bushing 22 is sleeved outside the hinge shaft 3. Thus, the structural strength of the hinge can be enhanced, and the wear of the second connecting ear 21 and the hinge shaft 3 can be reduced, thereby extending the service life of the device and facilitating maintenance and replacement.

[0042] In a specific embodiment of the present invention, the first connecting ear 11 is configured as a semicircular structure, and the first connecting ear 11 and the hinge shaft 3 are correspondingly provided with mounting holes 6 for inserting the fastener 5, and the fastener 5 is sequentially inserted into the first connecting ear 11 and the hinge shaft 3. Specifically, Figure 1 As shown, the hinge hole 4 on the first connecting ear 11 is a semicircular hole. The fastener 5 can be a bolt, the mounting hole 6 on the first connecting ear 11 can be a through hole, and the mounting hole 6 on the hinge shaft 3 can be a threaded hole. The hinge shaft 3 passes through the circular hole on the second connecting ear 21 and is embedded in the semicircular hole on the first connecting ear 11. Then the bolt passes through the through hole on the first connecting ear 11 and is screwed into the threaded hole on the hinge shaft 3 for connection and fixing. In this way, a semicircular open hanging ear is formed, which is easy to assemble, and is connected by bolts, which is convenient for quick disassembly and assembly, with a simple structure and convenient operation.

[0043] As an optional embodiment of the utility model, the forklift mast connection structure further includes an oil nozzle 7, which is arranged on the hinge shaft 3, for example, it can be threaded. The oil nozzle 7 is used to inject lubricating oil, such as butter, grease, etc. Figure 7 As shown, the articulated shaft 3 is provided with an oil passage 31, one end of which is connected to the oil nozzle 7. The articulated shaft 3 is also provided with an oil storage tank 32, which is arranged along the circumference of the articulated shaft 3, and is connected to the other end of the oil passage 31. In this arrangement, lubricating oil can be injected into the oil passage 31 through the oil nozzle 7, and then flow into the oil storage tank 32, so as to lubricate the contact position between the articulated shaft 3 and the articulated seat, making the rotation more flexible and smooth, and extending the service life of the device.

[0044] In a specific embodiment of the present invention, Figure 3 As shown, there are at least two oil nozzles 7, and both ends of the hinge shaft 3 are provided with oil nozzles 7. This facilitates rapid filling of lubricating oil and improves lubrication efficiency.

[0045] Furthermore, in the embodiment of the present utility model, the number of the oil passages 31 is at least two, and the oil passages 31 are distributed at intervals along the circumference of the articulated shaft 3. Figure 3 As shown, each oil passage 31 is evenly distributed along the circumference of the articulated shaft 3. This facilitates the lubricating oil to quickly fill the entire oil storage tank 32, so that the contact surface between the articulated shaft 3 and the articulated seat is reliably lubricated.

[0046] As an optional embodiment of the present utility model, Figure 6 As shown, the bushing 22 is provided with a limiting flange 221, and the second connecting ear 21 is provided with a limiting groove 211 adapted to the limiting flange 221, and the limiting flange 221 abuts against the limiting groove 211. In this way, the bushing 22 can be axially positioned, which is convenient for installing the bushing 22 and improving assembly efficiency.

[0047] In a specific embodiment of the present invention, Figure 4 As shown, the number of the first articulated seats 1 is at least two, and the first articulated seats 1 are spaced apart along the length direction of the forklift mast 8. Figure 5 As shown, the second hinge seat 2 is arranged in a one-to-one correspondence with the first hinge seat 1. Such an arrangement can improve the structural strength of the hinge and ensure that the forklift mast 8 is reliably connected to the vehicle body. Figure 4 As for the placement position of the forklift mast connection structure shown in the figure, the direction indicated by the arrow in the figure is the length direction of the forklift mast 8.

[0048] The forklift provided by the utility model is described below. The forklift described below and the forklift mast connection structure described above can be referred to each other.

[0049] The embodiment of the utility model also provides a forklift, including a forklift mast connection structure as in the above-mentioned embodiments. In this way, the rotation center of the first articulated seat 1 and the second articulated seat 2 forms the rotation center of the forklift mast 8, and the second articulated seat 2 is located on the side of the drive axle 9 close to the forklift mast 8, and the rotation center of the second articulated seat 2 is lower than the rotation center of the drive axle 9, so that the front and rear tilting rotation axis of the forklift mast 8 is no longer coaxially arranged with the central axis of the drive axle 9, and the rotation axis position of the forklift mast 8 is lowered and moved forward, thereby improving the force condition of the tilt cylinder 10, and increasing the operating space, facilitating the installation and disassembly of the forklift mast 8, and improving the maintainability of the forklift mast 8. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the above-mentioned forklift mast connection structure, so it will not be repeated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A forklift mast connection structure, used to connect a forklift mast (8) and a vehicle body, characterized in that: include: A first hinge seat (1) is arranged on the forklift mast (8); The second articulated seat (2) is arranged on the driving axle (9) of the vehicle body, the second articulated seat (2) is rotatably connected to the first articulated seat (1), the second articulated seat (2) is located on a side of the driving axle (9) close to the forklift mast (8), and the rotation center of the second articulated seat (2) is lower than the rotation center of the driving axle (9).

2. The forklift mast connection structure according to claim 1, characterized in that: The first hinge seat (1) comprises: A pair of first connecting ears (11) are spaced apart along the length direction of the forklift gantry (8); a second hinge seat (2) is inserted between the pair of first connecting ears (11); the pair of first connecting ears (11) and the second hinge seat (2) are rotatably connected via a hinge shaft (3); and the pair of first connecting ears (11) and the second hinge seat (2) are correspondingly provided with hinge holes (4) adapted to the hinge shaft (3).

3. The forklift mast connection structure according to claim 2, characterized in that: The second hinged seat (2) comprises: A second connecting ear (21) is rotatably connected to the hinge shaft (3), and the second connecting ear (21) is provided with the hinge hole (4); A bushing (22) is arranged in the hinge hole (4), and the bushing (22) is sleeved outside the hinge shaft (3).

4. The forklift mast connection structure according to claim 2, characterized in that: The first connecting ear (11) is configured as a semicircular structure, and the first connecting ear (11) and the hinge shaft (3) are correspondingly provided with mounting holes (6) for inserting a fastener (5), and the fastener (5) is sequentially inserted into the first connecting ear (11) and the hinge shaft (3).

5. The forklift mast connection structure according to claim 2, characterized in that: Also includes: An oil nozzle (7) is arranged on the hinge shaft (3), and the oil nozzle (7) is used to inject lubricating oil. The hinge shaft (3) is provided with an oil passage (31), and one end of the oil passage (31) is connected to the oil nozzle (7); An oil storage tank (32) is arranged along the circumference of the hinge shaft (3), and the oil storage tank (32) is connected to the other end of the oil passage (31).

6. The forklift mast connection structure according to claim 5, characterized in that: The number of the oil nozzles (7) is at least two, and the oil nozzles (7) are provided at both ends of the hinge shaft (3).

7. The forklift mast connection structure according to claim 5, characterized in that: The number of the oil passages (31) is at least two, and the oil passages (31) are distributed at intervals along the circumference of the hinge shaft (3).

8. The forklift mast connection structure according to claim 3, characterized in that: The bushing (22) is provided with a limiting flange (221), and the second connecting ear (21) is provided with a limiting groove (211) adapted to the limiting flange (221), and the limiting flange (221) abuts against the limiting groove (211).

9. The forklift mast connection structure according to claim 1, characterized in that: The number of the first articulated seats (1) is at least two, and the first articulated seats (1) are spaced apart along the length direction of the forklift gantry (8), and the second articulated seats (2) are arranged in one-to-one correspondence with the first articulated seats (1).

10. A forklift, characterized in that: It comprises a forklift portal frame connection structure as described in any one of claims 1 to 9.

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