A lightweight inner mast for forklift

Abstract

The present application provides a lightweight inner mast of a forklift, which belongs to the technical field of forklift equipment. It includes a mast door body, a crossbeam is provided on the mast body, two forks are detachably connected to the crossbeam, and a connecting mechanism is provided between the fork and the crossbeam, the connecting mechanism includes a first plate fixedly connected to one end of the fork, a second plate fixedly connected to one end of the first plate, a third plate fixedly connected to one end of the second plate, and a locking mechanism arranged on the first plate for locking the first plate to the crossbeam, the first plate, the second plate and the third plate are arranged in a U shape, the lower surface of the second plate abuts against the upper surface of the crossbeam, and a support mechanism is provided on the lower surface of the fork for facilitating the operator to place one end of the fork on the crossbeam. The present application has the advantage of facilitating the operator to install the fork on the forklift alone, thereby reducing labor.

Description

Technical Field

[0001] The present application belongs to the technical field of forklift equipment, and in particular to a lightweight inner mast of a forklift. Background Art

[0002] Forklifts are industrial handling vehicles, referring to various wheeled vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods. They are referred to as industrial vehicles by the International Organization for Standardization (ISO / TC110). They are commonly used for transporting large objects in warehouses and are typically powered by either a fuel engine or a battery.

[0003] The forklift mast assembly includes the forklift inner mast, the forklift middle mast and the forklift outer mast. The forks are generally installed on the inner mast. Since the forklift generally carries heavy goods, in order to ensure that it can carry heavier goods, the forks must have a certain strength, which makes the weight of the forks heavier. When the operator replaces the forks, due to the heavy forks, multiple workers are required to operate at the same time to replace the forks, which is more troublesome to operate. Summary of the Invention

[0004] In order to overcome the deficiencies in the background technology, the purpose of the present application is to provide a lightweight inner mast for a forklift, which facilitates the operator to install the fork on the forklift alone and reduces the labor.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A lightweight inner mast of a forklift, comprising a mast door body, a crossbeam provided on the mast body, two forks detachably connected to the crossbeam, a connecting mechanism provided between the fork and the crossbeam, the connecting mechanism comprising a first plate fixedly connected to one end of the fork, a second plate fixedly connected to one end of the first plate, a third plate fixedly connected to one end of the second plate, a locking mechanism provided on the first plate for locking the first plate to the crossbeam, the first plate, the second plate and the third plate being arranged in a U-shape, the lower surface of the second plate abutting against the upper surface of the crossbeam, and a supporting mechanism provided on the lower surface of the fork for facilitating a single operator to place one end of the fork on the crossbeam.

[0007] As a preferred solution, the support mechanism includes a support groove provided on the lower surface of the fork, a support rod rotatably connected between the inner walls on both sides of one end of the support groove, a mounting groove provided on the upper surface of the support rod, a support screw rotatably connected between the inner walls at both ends of the support groove, a support block threadedly connected to the outer wall of the support screw, a connecting rod rotatably connected to the support block, and a driving member provided on the fork for driving the support screw to rotate, and the other end of the connecting rod is rotatably connected between the inner walls on both sides of the mounting groove.

[0008] As a preferred solution, the driving member includes a driving groove provided on the end face of one end of the fork, a first U-shaped block fixedly connected to one end of the support screw, a universal joint bearing rotatably connected to the inner walls at both ends of the first U-shaped block, a second U-shaped block rotatably connected to the universal joint bearing, a driving rod fixedly connected to the second U-shaped block, and a clamping groove provided on the side wall of the first plate close to the third plate, the opening of the first U-shaped block is set toward the side away from the support screw, one end of the support screw extends into the driving groove, the first U-shaped block is fixedly connected to the outer wall of the end of the support screw extending into the driving groove, the driving rod is arranged in a Z shape, and a driving sleeve is rotatably connected to the outer wall of one end of the driving rod close to the second U-shaped block, and the driving rod is embedded in the clamping groove.

[0009] As a preferred solution, a connecting rod is coaxially connected to one end of the support screw, a first clamping rod is fixedly connected to the outer wall of the connecting rod, a second clamping rod is fixedly connected to the outer wall of one end of the support screw, a connecting sleeve is slidably connected to the outer wall of the connecting rod, a long groove is opened on the outer wall of the connecting sleeve, the first clamping rod and the second clamping rod are slidably connected in the long groove, and the first U-shaped block is fixedly connected to the end face of one end of the connecting sleeve.

[0010] As a preferred solution, a driving hole is provided on the upper surface of one end of the fork, the driving hole is connected to the driving groove, a first bevel gear is coaxially fixedly connected to the outer wall of one end of the support screw, a mounting rod is coaxially rotatably connected to the inner wall of the driving hole, a second bevel gear is coaxially fixedly connected to the outer wall of the lower end of the mounting rod, the first bevel gear and the second bevel gear are meshed, the upper end surface of the mounting rod is flush with the upper surface of the fork and an embedding groove is provided on the upper end surface of the mounting rod.

[0011] As a preferred solution, the distance from the rotating shaft of the support rod to one end of the fork close to the first plate is smaller than the distance from the rotating shaft of the support rod to the other end of the fork.

[0012] As a preferred solution, the locking mechanism includes a mounting hole provided on the side wall at the lower end of the first plate, a locking plate slidably connected in the mounting hole, an upper surface of one end of the locking plate abuts against the lower surface of the cross beam, a locking groove is provided on the upper surface of the end of the fork close to the first plate, the other end of the locking plate is embedded in the locking groove, a locking groove is provided on the side wall at the lower end of the first plate, the locking groove is located above the mounting hole, the locking groove is connected to the mounting hole, a locking plate is fixedly connected between the inner walls on both sides of the lock groove, a locking bolt is threadedly connected to the lock plate, and one end of the locking bolt abuts against the upper surface of the end of the locking plate away from the cross beam.

[0013] As a preferred solution, a positioning groove is provided on the inner walls on both sides of the locking groove, and a positioning block is fixedly connected to the side walls on both sides of one end of the locking plate. The length of the positioning block is smaller than the length of the positioning groove, and the positioning block is embedded in the positioning groove.

[0014] As a preferred solution, a positioning mechanism for positioning the second plate on the crossbeam is provided between the lower surface of the second plate and the upper surface of the crossbeam, the positioning mechanism includes a positioning rack fixedly connected to the upper surface of the crossbeam, a positioning tooth fixedly connected to the lower surface of both ends of the second plate, a spring sheet fixedly connected between the two positioning teeth, the spring sheet is arranged in an arc shape and bent toward one side of the fork, and the outer wall of the spring sheet exceeds the lower end of the positioning tooth.

[0015] Compared with the prior art, this application has the following advantages:

[0016] 1. In the present application, the operator supports one end of the fork by a supporting mechanism, adjusts the position of the third plate by moving the end away from the first plate, hooks the third plate on the crossbeam, and locks the first plate on the crossbeam by a locking mechanism. This arrangement has a simple structure and is easy to operate, making it convenient for the operator to install the fork on the forklift alone and reducing labor.

[0017] 2. In this application, after the third plate is installed on the beam, the operator bends the drive rod and embeds it in the slot. The second slot is disengaged from the long slot. The operator drives the drive rod to rotate through a tool. The drive rod drives the second bevel gear to rotate, and the first bevel gear drives the support screw to rotate. Through such a setting, the structure is simple and the operation is convenient, which makes it convenient for the operator to drive the support rod into the support slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an embodiment of the present application.

[0019] Figure 2 It is a structural diagram of the support mechanism in an embodiment of the present application.

[0020] Figure 3 It is a structural diagram of the driving component in an embodiment of the present application.

[0021] Figure 4 It is a structural diagram of the locking mechanism in an embodiment of the present application.

[0022] Figure 5 It is a structural diagram of the positioning mechanism in an embodiment of the present application.

[0023] In the figure, 1, door frame; 2, crossbeam; 3, fork; 4, connecting mechanism; 5, first plate; 6, second plate; 7, third plate; 8, locking mechanism; 9, supporting mechanism; 10, supporting groove; 11, supporting rod; 12, mounting groove; 13, supporting screw; 14, supporting block; 15, connecting rod; 16, driving member; 17, driving groove; 18, first U-shaped block; 19, universal joint bearing; 20, second U-shaped block; 21, driving rod; 22, slot; 23, driving Sleeve; 24. Connecting rod; 25. First clamping rod; 26. Second clamping rod; 27. Connecting sleeve; 28. Long slot; 29. ​​Drive hole; 30. First bevel gear; 31. Mounting rod; 32. Second bevel gear; 33. Embedded slot; 34. Mounting hole; 35. Locking plate; 36. Locking slot; 37. Locking slot; 38. Locking plate; 39. Locking bolt; 40. Positioning slot; 41. Positioning block; 42. Positioning mechanism; 43. Positioning rack; 44. Positioning tooth; 45. Spring sheet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, a lightweight inner mast of a forklift includes a mast body, a crossbeam 2 is fixedly connected to the mast body, two forks 3 are detachably connected to the crossbeam 2, and a connecting mechanism 4 is provided between the forks 3 and the crossbeam 2.

[0026] like Figure 1 As shown, the connecting mechanism 4 includes a first plate 5, a second plate 6, a third plate 7 and a locking mechanism 8. One end of the first plate 5 is fixedly connected to the upper surface of one end of the fork 3, and the first plate 5 is vertically arranged. One end of the second plate 6 is fixedly connected to the upper end surface of the first plate 5, and the second plate 6 and the first plate 5 are perpendicularly arranged. One end of the third plate 7 is fixedly connected to the end surface of one end of the second plate 6, and the third plate 7 is vertically arranged. A U-shaped arrangement is formed between the first plate 5, the second plate 6, the third plate 7 and the fork 3. An integral molding arrangement is formed between the first plate 5, the second plate 6, the third plate 7 and the fork 3. The locking mechanism 8 is arranged on the first plate 5, and the locking mechanism 8 is used to lock the first plate 5 on the beam 2.

[0027] like Figure 1 、 Figure 4As shown, the locking mechanism 8 includes a mounting hole 34, which is provided on the outer wall of the lower end of the first plate 5. The mounting hole 34 passes through the first plate 5, and a locking plate 35 is slidably connected in the mounting hole 34. A locking groove 36 is provided on the upper surface of one end of the fork 3 close to the first plate 5, and the locking groove 36 is communicated with the mounting hole 34. One end of the locking plate 35 abuts against the lower surface of the beam 2, and the other end of the locking plate 35 is embedded in the locking groove 36. A locking groove 37 is provided on the outer wall of the lower end of the first plate 5, and the locking groove 37 is communicated with the mounting hole 34. A locking plate 38 is fixedly connected between the inner walls on both sides of the locking groove 37, and a locking bolt 39 is threadedly connected to the locking plate 38. One end of the locking bolt 39 abuts against the upper surface of one end of the locking plate 35 located in the locking groove 36.

[0028] like Figure 4 As shown, in order to facilitate the positioning of the locking plate 35, a positioning groove 40 is provided on the inner walls on both sides of the locking groove 36. The positioning groove 40 is arranged along the length direction of the locking groove 36. A positioning block 41 is fixedly connected to the side walls on both sides of one end of the locking plate 35. The length of the positioning block 41 is less than the length of the positioning groove 40, and the positioning block 41 is embedded in the positioning groove 40.

[0029] like Figure 1 、 Figure 5 As shown, in order to improve the stability of the second plate 6 against the upper surface of the beam 2, a positioning mechanism 42 is provided between the upper surface of the beam 2 and the lower surface of the second plate 6. The positioning mechanism 42 includes a positioning rack 43. The positioning rack 43 is fixedly connected to the upper surface of the beam 2. The positioning rack 43 is arranged along the length direction of the upper surface of the beam 2. A positioning tooth 44 is fixedly connected to the lower surface of both ends of the second plate 6. A spring piece 45 is fixedly connected between the two positioning teeth 44. The two ends of the spring piece 45 are respectively fixedly connected to the outer wall of one end of the two positioning teeth 44 close to the second plate 6. The spring piece 45 is arranged in an arc shape, and the outer wall of the spring piece 45 exceeds the lower end of the positioning tooth 44.

[0030] like Figure 1 、 Figure 2As shown, a support mechanism 9 is provided on the lower surface of the fork 3 for facilitating the operator to place one end of the fork 3 on the crossbeam 2. The support mechanism 9 includes a support groove 10, which is provided on the lower surface of the fork 3. A support rod 11 is rotatably connected between the inner walls on both sides of the end of the support groove 10 away from the first plate 5. The distance from the rotating shaft of the support rod 11 to the end of the fork 3 close to the first plate 5 is smaller than the distance from the rotating shaft of the support rod 11 to the other end of the fork 3. A mounting groove 12 is provided on the upper surface of the support rod 11, and a support screw 13 is rotatably connected between the inner walls at both ends of the support groove 10. A support block 14 is threadedly connected to the outer wall of the support screw 13, and a connecting rod 15 is rotatably connected to the support block 14. The other end of the connecting rod 15 is rotatably connected between the inner walls on the side of the mounting groove 12. A driving member 16 for driving the support screw 13 to rotate is provided on the fork 3.

[0031] like Figure 2 、 Figure 3 As shown, the driving member 16 includes a driving groove 17, which is opened on the end surface of one end of the fork 3, and one end of the support screw 13 extends into the driving groove 17. A first U-shaped block 18 is fixedly connected to the end of the support screw 13 extending into the driving groove 17. A universal joint bearing 19 is rotatably connected between the inner walls on both sides of the first U-shaped block 18, and a second U-shaped block 20 is rotatably connected to the universal joint bearing 19. A driving rod 21 is fixedly connected to the end of the second U-shaped block 20 away from the opening. The driving rod 21 is arranged in a Z shape, and a driving sleeve 23 is rotatably connected to the outer wall of the end of the driving rod 21 close to the second U-shaped block 20. A slot 22 is provided on the side wall, and a driving rod 21 is embedded in the slot 22. A connecting rod 24 is coaxially connected to the end face of the support screw 13 located in the driving slot 17. A first clamping rod 25 is fixedly connected to the outer wall of the connecting rod 24. A second clamping rod 26 is fixedly connected to the outer wall of the support screw 13 located in the driving slot 17. A connecting sleeve 27 is slidably connected to the outer wall of the connecting rod 24. A long groove 28 is provided on the outer wall of the connecting sleeve 27 close to the support screw 13. The end of the first U-shaped block 18 away from the opening is fixedly connected to the end face of one end of the connecting sleeve 27, and the first clamping rod 25 and the second clamping rod 26 are slidably connected in the long groove 28.

[0032] like Figure 3As shown, in order to facilitate the operator to drive the support screw 13 to rotate, a driving hole 29 is provided on the upper surface of the end of the fork 3 close to the first plate 5, and the driving hole 29 is communicated with the driving groove 17. A first bevel gear 30 is coaxially fixedly connected to the outer wall of one end of the support screw 13, and a mounting rod 31 is coaxially rotatably connected to the inner wall of the driving hole 29. The upper end of the mounting rod 31 is flush with the upper surface of the fork 3, and the lower end of the mounting rod 31 extends into the driving groove 17. An embedding groove 33 is provided on the upper end surface of the mounting rod 31, and a second bevel gear 32 is coaxially fixedly connected to the outer wall of the end of the mounting rod 31 located in the driving groove 17. The first bevel gear 30 and the second bevel gear 32 are meshed.

[0033] The working principle of the embodiment of the present application is as follows: the operator removes the driving rod 21 from the card slot 22, and the second card rod 26 is engaged with the long slot 28. The operator drives the support screw 13 to rotate through the driving rod 21, and the support screw 13 drives the support block 14 to move. The support block 14 drives the support rod 11 to rotate through the connecting rod 15. One end of the support rod 11 is supported on the ground. The operator adjusts the position of the end of the fork 3 close to the first plate 5 by moving the end of the fork 3 away from the first plate 5. The operator hangs the third plate 7 on the beam 2, slides the locking plate 35 into the locking groove 36, and the upper surface of one end of the locking plate 35 abuts against the lower surface of the beam 2. The locking bolt 39 is tightened, and one end of the locking bolt 39 is tightly abutted against the upper surface of the other end of the locking plate 35.

[0034] The second plate 6 abuts against the upper surface of the beam 2 . Under the action of gravity, the spring leaf 45 is compressed, and the positioning teeth 44 engage with the positioning teeth strip 43 .

[0035] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0036] The above is a detailed introduction to the method provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A lightweight inner mast for a forklift, characterized in that: The invention comprises a gantry door body (1), a crossbeam (2) is provided on the gantry body, two cargo forks (3) are detachably connected to the crossbeam (2), a connecting mechanism (4) is provided between the cargo fork (3) and the crossbeam (2), the connecting mechanism (4) comprises a first plate (5) fixedly connected to one end of the cargo fork (3), a second plate (6) fixedly connected to one end of the first plate (5), a third plate (7) fixedly connected to one end of the second plate (6), and a locking mechanism (8) arranged on the first plate (5) for locking the first plate (5) on the crossbeam (2), the first plate (5), the second plate (6) and the third plate (7) being arranged in a U-shape, the lower surface of the second plate (6) being in contact with the upper surface of the crossbeam (2), and a supporting mechanism (9) for facilitating a single operator to place one end of the cargo fork (3) on the crossbeam (2).

2. The lightweight inner mast of a forklift according to claim 1, characterized in that: The support mechanism (9) comprises a support groove (10) provided on the lower surface of the fork (3), a support rod (11) rotatably connected between the inner walls at both sides of one end of the support groove (10), a mounting groove (12) provided on the upper surface of the support rod (11), a support screw (13) rotatably connected between the inner walls at both ends of the support groove (10), a support block (14) threadedly connected to the outer wall of the support screw (13), a connecting rod (15) rotatably connected to the support block (14), and a driving member (16) provided on the fork (3) for driving the support screw (13) to rotate, wherein the other end of the connecting rod (15) is rotatably connected between the inner walls at both sides of the mounting groove (12).

3. The lightweight inner mast of a forklift according to claim 2, characterized in that: The driving member (16) comprises a driving groove (17) provided on an end surface of the fork (3) close to the first plate (5), a first U-shaped block (18) fixedly connected to one end of the support screw (13), a universal joint bearing (19) rotatably connected to the inner walls of both ends of the first U-shaped block (18), a second U-shaped block (20) rotatably connected to the universal joint bearing (19), a driving rod (21) fixedly connected to the second U-shaped block (20), a slot provided on a side wall of the first plate (5) close to the third plate (7), (22), the opening of the first U-shaped block (18) is arranged toward a side away from the support screw (13), one end of the support screw (13) extends into the drive groove (17), the first U-shaped block (18) is fixedly connected to the outer wall of one end of the support screw (13) extending into the drive groove (17), the drive rod (21) is arranged in a Z shape, and a drive sleeve (23) is rotatably connected to the outer wall of one end of the drive rod (21) close to the second U-shaped block (20), and the drive rod (21) is embedded in the card slot (22).

4. The lightweight inner mast of a forklift according to claim 3, characterized in that: A connecting rod (24) is coaxially connected to one end of the support screw (13), a first clamping rod (25) is fixedly connected to the outer wall of the connecting rod (24), a second clamping rod (26) is fixedly connected to the outer wall of one end of the support screw (13), a connecting sleeve (27) is slidably connected to the outer wall of the connecting rod (24), a long groove (28) is provided on the outer wall of the connecting sleeve (27), the first clamping rod (25) and the second clamping rod (26) are slidably connected in the long groove (28), and the first U-shaped block (18) is fixedly connected to the end surface of one end of the connecting sleeve (27).

5. The lightweight inner mast of a forklift according to claim 4, characterized in that: A driving hole (29) is provided on the upper surface of one end of the fork (3), the driving hole (29) is communicated with the driving groove (17), a first bevel gear (30) is coaxially fixedly connected to the outer wall of one end of the support screw (13), a mounting rod (31) is coaxially rotatably connected to the inner wall of the driving hole (29), a second bevel gear (32) is coaxially fixedly connected to the outer wall of the lower end of the mounting rod (31), the first bevel gear (30) and the second bevel gear (32) are meshed, the upper end surface of the mounting rod (31) is flush with the upper surface of the fork (3), and an embedding groove (33) is provided on the upper end surface of the mounting rod (31).

6. The lightweight inner mast of a forklift according to claim 2, characterized in that: The distance from the rotating shaft of the support rod (11) to one end of the fork (3) close to the first plate (5) is smaller than the distance from the rotating shaft of the support rod (11) to the other end of the fork (3).

7. The lightweight inner mast of a forklift according to claim 6, characterized in that: The locking mechanism (8) includes a mounting hole (34) provided on the side wall of the lower end of the first plate (5), a locking plate (35) being slidably connected in the mounting hole (34), an upper surface of one end of the locking plate (35) being in contact with the lower surface of the crossbeam (2), a locking groove (36) being provided on the upper surface of the end of the fork (3) close to the first plate (5), the other end of the locking plate (35) being embedded in the locking groove (36), a locking groove (37) being provided on the side wall of the lower end of the first plate (5), the locking groove (37) being located above the mounting hole (34), the locking groove (37) being communicated with the mounting hole (34), a locking plate (38) being fixedly connected between the inner walls on both sides of the locking groove (37), a locking bolt (39) being threadedly connected to the locking plate (38), one end of the locking bolt (39) being in contact with the upper surface of the end of the locking plate (35) away from the crossbeam (2).

8. The lightweight inner mast of a forklift according to claim 7, characterized in that: A positioning groove (40) is provided on both inner walls of the locking groove (36), and a positioning block (41) is fixedly connected to both side walls of one end of the locking plate (35). The length of the positioning block (41) is smaller than the length of the positioning groove (40), and the positioning block (41) is embedded in the positioning groove (40).

9. The lightweight inner mast of a forklift according to claim 8, characterized in that: A positioning mechanism (42) for positioning the second plate (6) on the crossbeam (2) is provided between the lower surface of the second plate (6) and the upper surface of the crossbeam (2). The positioning mechanism (42) includes a positioning rack (43) fixedly connected to the upper surface of the crossbeam (2). A positioning tooth (44) is fixedly connected to the lower surface of both ends of the second plate (6). A spring sheet (45) is fixedly connected between the two positioning teeth (44). The spring sheet (45) is arranged in an arc shape and is bent toward one side of the fork (3). The outer wall of the spring sheet (45) exceeds the lower end of the positioning tooth (44).

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