A new type of forklift crank arm

Abstract

The utility model relates to the technical field of forklift accessories, and discloses a novel forklift crank arm, including an upper crank arm, a circular ring is fixedly connected to the bottom of the upper crank arm, a lower crank arm is fixedly connected to the bottom of the circular ring, pin holes are provided inside the upper crank arm and inside the lower crank arm, a cylinder is fixedly connected to the inner wall of the pin hole, a grease discharge hole is provided inside the cylinder, a first through hole is provided on the upper surface of the upper crank arm, and a three-way pipe is fixedly connected to the inner wall of the first through hole and the side of the circular ring. The utility model applies pressure to the grease in the grease storage box by a pressing block on the grease storage box, so that the grease in the grease storage box can be discharged through the grease discharge hole, and the connection between the cylinder and the pin shaft can be lubricated by the discharged grease. At the same time, more grease can be stored in the grease storage box, so that the connection between the cylinder and the pin shaft can be lubricated for a long time, so that the forklift crank arm and the pin shaft are not easy to wear.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift accessories, in particular to a novel forklift crank arm. Background Art

[0002] A forklift is an industrial handling vehicle, which refers to various wheeled handling vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. It is often used for the transportation of large objects in storage, and is usually driven by a fuel engine or battery. At present, in the steering structure of a forklift, most of the two ends of the forklift crank arm are hinged together with the forklift tire connection device and the steering cylinder through a pin shaft. For example, a forklift steering fixed structure disclosed in Chinese Patent Publication No. CN205294731U, but the crank arm and the pin shaft are prone to wear, which leads to a gap between the crank arm and the pin shaft due to wear after the forklift has been used for a period of time. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art. For example, at present, in the steering structure of a forklift, the two ends of the forklift crank arm are mostly hinged together with the forklift tire connecting device and the steering cylinder through a pin shaft, but since the crank arm and the pin shaft are easily worn, a gap is easily generated between the crank arm and the pin shaft due to wear after the forklift has been used for a period of time, and a new type of forklift crank arm is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A new type of forklift crank arm, including an upper crank arm, a circular ring is fixedly connected to the bottom of the upper crank arm, a lower crank arm is fixedly connected to the bottom of the circular ring, pin holes are provided inside the upper crank arm and the lower crank arm, a cylinder is fixedly connected to the inner wall of the pin hole, a grease discharge hole is provided inside the cylinder, a first through hole is provided on the upper surface of the upper crank arm, a three-way pipe is fixedly connected to the inner wall of the first through hole and the side of the circular ring, and a grease storage box is fixedly connected to the upper surface of the upper crank arm.

[0006] Preferably, the fat storage box includes an externally threaded barrel, the bottom of which is fixedly connected to the upper surface of the upper crank arm, a sealing cover is threadedly connected to the surface of the externally threaded barrel, a sliding hole is provided on the upper surface of the sealing cover, a sliding column is fitted on the inner wall of the sliding hole, a pressing block is fixedly connected to the bottom of the sliding column, the surface of the pressing block contacts the inner wall of the externally threaded barrel, a connecting plate is fixedly connected to the upper surface of the sliding column, a spring is fixedly connected to the bottom of the connecting plate and the upper surface of the sealing cover, and an air hole is provided on the upper surface of the sealing cover.

[0007] Preferably, an annular dustproof net is fixedly connected to the upper surface of the sealing cover, and the annular dustproof net is located above the air hole.

[0008] Preferably, a groove is provided at the bottom of the external threaded cylinder, a slag collecting box is fitted on the inner wall of the groove and the upper surface of the upper crank arm, a second through hole is provided at the bottom of the slag collecting box, a screen is fixedly connected to the inner wall of the slag collecting box, mounting plates are fixedly connected to the left and right sides of the slag collecting box, a threaded hole is provided inside the upper crank arm, a fixing bolt is threadedly connected to the inner wall of the threaded hole, and the inner wall of the mounting plate is in contact with the surface of the fixing bolt.

[0009] Preferably, the center of the cylinder coincides with the center of the ring.

[0010] Preferably, a non-slip sleeve is bonded to the surface of the sealing cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model uses the pressure of the pressing block on the grease storage box to discharge the grease in the grease storage box through the grease discharge hole, and lubricates the connection between the cylinder and the pin shaft with the discharged grease. At the same time, the grease storage box can store a large amount of grease, so that the connection between the cylinder and the pin shaft can be lubricated for a long time, thereby preventing the forklift crank arm and the pin shaft from being easily worn.

[0013] (2) The utility model can fix the slag collecting box in the groove by cooperating with the mounting plate, the threaded hole and the fixing bolt, and filter the grease entering the three-way pipe through the screen in the slag collecting box, thereby preventing the impurities in the grease from entering the connection between the cylinder and the pin shaft through the grease discharge hole, thereby preventing the accelerated wear of the connection between the cylinder and the pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 It is a bottom view of the upper crank arm in the utility model;

[0017] Figure 4 It is a side view of the fat storage box in the utility model;

[0018] Figure 5 for Figure 4 Cross-sectional view at BB in the middle.

[0019] In the figure: 1. upper crank arm; 2. circular ring; 3. lower crank arm; 4. pin hole; 5. cylinder; 6. grease discharge hole; 7. first through hole; 8. three-way pipe; 9. grease storage box; 91. external threaded cylinder; 92. sealing cover; 93. sliding hole; 94. sliding column; 95. pressing block; 96. connecting plate; 97. spring; 98. air hole; 10. annular dustproof net; 11. groove; 12. slag collecting box; 13. second through hole; 14. screen; 15. mounting plate; 16. threaded hole; 17. fixing bolt; 18. anti-slip sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Embodiment 1:

[0023] Reference Figure 1-5 A new type of forklift crank arm comprises an upper crank arm 1, a ring 2 is fixedly connected to the bottom of the upper crank arm 1, a lower crank arm 3 is fixedly connected to the bottom of the ring 2, pin holes 4 are provided inside the upper crank arm 1 and the lower crank arm 3, a cylinder 5 is fixedly connected to the inner wall of the pin hole 4, the center of the cylinder 5 coincides with the center of the ring 2, when the pin shaft is inserted into the cylinder 5, the forklift tire connecting device and the steering cylinder can be hinged to the forklift crank arm through the pin shaft, a grease discharge hole 6 is provided inside the cylinder 5, a first through hole 7 is provided on the upper surface of the upper crank arm 1, a three-way pipe 8 is fixedly connected to the inner wall of the first through hole 7 and the side of the ring 2, and a grease storage box 9 is fixedly connected to the upper surface of the upper crank arm 1.

[0024] The fat storage box 9 includes an externally threaded cylinder 91, the bottom of which is fixedly connected to the upper surface of the upper crank arm 1, a sealing cover 92 is threadedly connected to the surface of the externally threaded cylinder 91, a non-slip sleeve 18 is bonded to the surface of the sealing cover 92, a sliding hole 93 is provided on the upper surface of the sealing cover 92, a sliding column 94 is fitted on the inner wall of the sliding hole 93, a pressing block 95 is fixedly connected to the bottom of the sliding column 94, the surface of the pressing block 95 contacts the inner wall of the externally threaded cylinder 91, a connecting plate 96 is fixedly connected to the upper surface of the sliding column 94, a spring 97 is fixedly connected to the bottom of the connecting plate 96 and the upper surface of the sealing cover 92, and the sealing cover 9 2 is provided with an air hole 98, and an annular dustproof net 10 is fixedly connected to the upper surface of the sealing cover 92. The annular dustproof net 10 is located above the air hole 98, and the annular dustproof net 10 prevents dust from entering the grease storage box 9 through the air hole 98. When the pressing block 95 moves in the external threaded tube 91, the air inside and outside the external threaded tube 91 can circulate through the air hole 98. When the sealing cover 92 is screwed on the external threaded tube 91, the pressure of the spring 97 on the connecting plate 96 causes the pressing block 95 to generate downward pressure on the grease in the external threaded tube 91, and the grease in the grease storage box 9 is discharged through the grease discharge hole 6.

[0025] Embodiment 2:

[0026] Reference Figure 1-5 A groove 11 is provided at the bottom of the external threaded cylinder 91, and a slag collecting box 12 is provided on the inner wall of the groove 11 and the upper surface of the upper crank arm 1. When the slag collecting box 12 is fixed in the groove 11, the groove 11 is sealed by the slag collecting box 12. A second through hole 13 is provided at the bottom of the slag collecting box 12, and a screen 14 is fixedly connected to the inner wall of the slag collecting box 12. A mounting plate 15 is fixedly connected to the left and right sides of the slag collecting box 12. A threaded hole 16 is provided inside the upper crank arm 1, and the threaded hole 16 The inner wall of the mounting plate 15 is threadedly connected with a fixing bolt 17, and the inner wall of the mounting plate 15 is in contact with the surface of the fixing bolt 17. The slag collecting box 12 can be fixed in the groove 11 through the cooperation of the mounting plate 15, the threaded hole 16 and the fixing bolt 17, and the grease entering the three-way pipe 8 is filtered through the screen 14 in the slag collecting box 12, thereby preventing impurities in the grease from entering the connection between the cylinder 5 and the pin shaft through the grease discharge hole 6, which causes accelerated wear of the connection between the cylinder 5 and the pin shaft.

[0027] In the utility model, when the user uses the forklift crank arm, the pin is first inserted into the cylinder 5, and the pin hinges the forklift tire connecting device and the steering cylinder to the forklift crank arm. Then, grease is injected into the external threaded cylinder 91, and the sealing cover 92 is screwed on the external threaded cylinder 91. At this time, the pressure of the spring 97 on the connecting plate 96 causes the pressing block 95 to exert downward pressure on the grease in the external threaded cylinder 91, and the grease in the grease storage box 9 is discharged through the grease discharge hole 6. Then, the discharged grease is used to lubricate the connection between the cylinder 5 and the pin.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A novel forklift crank arm, comprising an upper crank arm (1), characterized in that: The bottom of the upper crank arm (1) is fixedly connected to a circular ring (2), the bottom of the circular ring (2) is fixedly connected to a lower crank arm (3), the interior of the upper crank arm (1) and the interior of the lower crank arm (3) are both provided with pin holes (4), the inner wall of the pin hole (4) is fixedly connected to a cylinder (5), the interior of the cylinder (5) is provided with a grease discharge hole (6), the upper surface of the upper crank arm (1) is provided with a first through hole (7), the inner wall of the first through hole (7) and the side of the circular ring (2) are both fixedly connected with a three-way pipe (8), and the upper surface of the upper crank arm (1) is fixedly connected to a grease storage box (9).

2. A new forklift crank arm according to claim 1, characterized in that: The fat storage box (9) comprises an externally threaded cylinder (91), the bottom of which is fixedly connected to the upper surface of the upper crank arm (1), a sealing cover (92) is threadedly connected to the surface of the externally threaded cylinder (91), a sliding hole (93) is provided on the upper surface of the sealing cover (92), a sliding column (94) is fitted on the inner wall of the sliding hole (93), a pressing block (95) is fixedly connected to the bottom of the sliding column (94), the surface of the pressing block (95) contacts the inner wall of the externally threaded cylinder (91), a connecting plate (96) is fixedly connected to the upper surface of the sliding column (94), a spring (97) is fixedly connected to the bottom of the connecting plate (96) and the upper surface of the sealing cover (92), and an air hole (98) is provided on the upper surface of the sealing cover (92).

3. A new forklift crank arm according to claim 2, characterized in that: An annular dustproof net (10) is fixedly connected to the upper surface of the sealing cover (92), and the annular dustproof net (10) is located above the air hole (98).

4. A new forklift crank arm according to claim 2, characterized in that: The bottom of the externally threaded cylinder (91) is provided with a groove (11), the inner wall of the groove (11) and the upper surface of the upper crank arm (1) are both fitted with a slag collecting box (12), the bottom of the slag collecting box (12) is provided with a second through hole (13), the inner wall of the slag collecting box (12) is fixedly connected with a screen (14), the left and right sides of the slag collecting box (12) are both fixedly connected with a mounting plate (15), the interior of the upper crank arm (1) is provided with a threaded hole (16), the inner wall of the threaded hole (16) is threadedly connected with a fixing bolt (17), and the inner wall of the mounting plate (15) is in contact with the surface of the fixing bolt (17).

5. The novel forklift crank arm according to claim 1 is characterized in that: The center of the cylinder (5) coincides with the center of the ring (2).

6. The novel forklift crank arm according to claim 2 is characterized in that: An anti-slip sleeve (18) is bonded to the surface of the sealing cover (92).

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