A fork frame assembly and forklift with dual functions of side shifting and tilting

Abstract

The present invention discloses a fork frame assembly and a forklift with dual functions of lateral shifting and tilting, comprising a frame mechanism and a supporting mechanism for hanging a cargo fork, wherein the frame mechanism comprises a rear frame fixed to a forklift body, a lateral shift driving mechanism for driving the supporting mechanism to move left and right, and a tilting driving mechanism for driving the supporting mechanism to rotate, and the supporting mechanism is slidably and rotatably connected to the rear frame; the left and right movement and the tilting rotation of the supporting mechanism can be realized simultaneously, and the forklift is carried out by using the fork frame assembly to realize the tilting movement of the supporting mechanism, while the frame mechanism always keeps a vertical state, and then the door frame fixing the frame mechanism also always keeps a vertical state, thereby improving the efficiency of the forklift in picking up goods, and at the same time improving the stability and safety of the entire forklift transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and in particular to a fork frame assembly with the dual functions of lateral shifting and tilting and a forklift. Background Art

[0002] In order to facilitate the forking of goods and ensure that the goods do not slip off the mast fork, the mast of the forklift is generally equipped with a tilting device, which allows the mast to have a certain amount of front and rear tilt angle. For a super-high lifting mast over 9 meters, if the mast is tilted, the inertial acceleration of the front and rear tilt will inevitably make the whole vehicle shake and the goods will be more likely to fall off, and in more serious cases, the whole vehicle will overturn. At the same time, when picking up goods at a high position, it is not easy to align the fork hole, and repeated backing and adjustment will affect the efficiency of picking up goods. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a fork frame assembly and a forklift with dual functions of side shifting and tilting, which can simultaneously realize the left and right movement and tilting rotation of the supporting mechanism, which not only improves the forklift's cargo picking efficiency, but also improves the stability and safety of the entire forklift's handling.

[0004] The present invention proposes a fork frame assembly with dual functions of side shifting and tilting, including a frame mechanism and a support mechanism for hanging forks, the frame mechanism includes a rear frame fixed to a forklift body, a side shift drive mechanism for driving the support mechanism to move left and right, and a tilt drive mechanism for driving the support mechanism to rotate, and the support mechanism is connected to the rear frame in a sliding and rotational manner.

[0005] Furthermore, the support mechanism includes an upper crossbeam, a side plate and a lower crossbeam, the two ends of the upper crossbeam and the lower crossbeam are respectively fixedly connected by the side plates, and the relative inner sides of the two side plates are provided with overtravel limit grooves, and the first slider is provided in the overtravel limit grooves.

[0006] Furthermore, the side-shift drive mechanism includes a first plunger rod, a second plunger rod and a cylinder, two coaxial cavities are arranged in the cylinder, one end of the first plunger rod and one end of the second plunger rod are respectively inserted into the two cavities, and can move and rotate freely in the cavities, the other end of the first plunger rod is inserted into one of the overtravel limit grooves and is mounted on the first slider, the other end of the second plunger rod is inserted into another overtravel limit groove and is mounted on the first slider, the first plunger rod and the second plunger rod are respectively slidably connected to the corresponding first slider, and the cylinder is mounted and fixed on the rear frame.

[0007] Furthermore, the lateral shift drive mechanism also includes a guide rail and a main slider, the guide rail is fixedly arranged on the cylinder, the lower surface of the main slider is provided with a first groove along its axial direction, the guide rail portion is arranged in the first groove and is slidably connected to the first groove, and the upper surface of the main slider is nested and fixedly arranged in the upper cross beam.

[0008] Furthermore, the axis of the guide rail, the axis of the cylinder barrel, and the axis of the main slider are arranged in parallel.

[0009] Furthermore, the tilt drive mechanism includes a tilt cylinder, a second slider and a slider fixing seat for fixing the second slider, the second slider is fixed to the inner side of the lower cross beam, the tilt cylinder is fixedly arranged on the rear frame, and the telescopic end of the tilt cylinder is fixedly connected to the slider fixing seat.

[0010] Furthermore, a second groove is formed on the slider fixing seat, the telescopic end of the tilting oil cylinder is a first spherical structure, the telescopic end of the tilting oil cylinder is arranged in the second groove and can rotate in the second groove.

[0011] Furthermore, a limited disengagement block is provided on the upper surface of the lower cross beam, and two ends of the limited disengagement block are respectively fixedly connected to the two side plates; the fork frame assembly also includes a limit plate, a waist-shaped hole is opened on one side of the limit plate, and a third groove is opened on the other side. One end of the bolt passes through the waist-shaped hole to fix the limit plate to the rear frame, and the third groove is clamped on the limit disengagement block, and the groove surface of the third groove is an arc surface.

[0012] Furthermore, a guide rod is provided on one side of the tilting cylinder, and the end of the guide rod away from the second spherical structure is inserted into a guide tube fixed on the rear frame, and the second spherical structure end of the guide rod is slidably inserted into the fourth groove opened on the block fixing seat and can rotate in the fourth groove.

[0013] A forklift with the dual functions of side shifting and tilting comprises a fork frame assembly, wherein the fork frame assembly is the fork frame assembly as described above.

[0014] The advantages of the fork frame assembly and forklift with the dual functions of lateral shifting and tilting provided by the present invention are as follows: the fork frame assembly and forklift with the dual functions of lateral shifting and tilting provided in the structure of the present invention can simultaneously realize the left and right movement and tilting rotation of the supporting mechanism, thereby improving the efficiency of forklift picking up goods, avoiding the defects of the traditional medium and high-position fork picking up goods, which is difficult to align with the fork hole, and repeatedly retracting and adjusting the vehicle to affect the picking efficiency, while improving the stability and safety of the entire forklift handling; the setting of the first groove on the main slider allows the guide rail to be set in the guide rail, which not only facilitates the left and right movement of the main slider along the guide rail, but also facilitates the stability of the main slider when it rotates with the axis of the guide rail as the rotation axis; the setting of the second groove and the fourth groove on the slider fixing seat realizes the tilting movement of the supporting mechanism, while the frame mechanism always remains in a vertical state, and thus the door frame fixing the frame mechanism also always remains in a vertical state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 for Figure 1Back view of ;

[0017] Figure 3 It is a schematic diagram of the frame mechanism;

[0018] Figure 4 It is a structural diagram of the supporting mechanism;

[0019] Figure 5 A schematic diagram of the structure of the main slider;

[0020] Figure 6 It is a structural schematic diagram of the tilt cylinder;

[0021] Figure 7 It is a structural schematic diagram of a slider fixing seat;

[0022] Figure 8 for Figure 7 Schematic diagram of the back structure;

[0023] Fig. 9 is a structural schematic diagram of the guide rod;

[0024] Fig.10 It is a structural schematic diagram of a limiting plate;

[0025] Among them, 1-frame mechanism, 2-support mechanism, 3-limiting plate, 4-guide rod, 11-rear frame, 12-lateral shift drive mechanism, 13-tilting drive mechanism, 15-roller shaft, 16-chain plate, 17-limiting block, 21-upper beam, 22-side plate, 23-lower beam, 24-limiting block, 31-waist-shaped hole, 32-third groove, 41-second spherical structure, 111-cylinder support, 112-guide tube, 121-first plunger rod, 122-cylinder, 123-guide rail, 124-main slider, 125-first groove, 126-second plunger rod, 131-tilting cylinder, 132-second slider, 133-slider fixing seat, 221-overtravel limiting groove, 1311-first spherical structure, 1331-second groove, 1332-fourth groove, 1333-fifth groove. DETAILED DESCRIPTION

[0026] Below, the technical solution of the present invention is described in detail through specific embodiments. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation disclosed below.

[0027] like Figures 1 to 10As shown, the present invention proposes a fork frame assembly and a forklift with dual functions of side shifting and tilting, including a frame mechanism 1 and a support mechanism 2 for hanging a fork, the frame mechanism 1 is fixedly arranged on the forklift, the frame mechanism 1 includes a rear frame 11, a side shift driving mechanism 12 for driving the support mechanism 2 to move left and right, and a tilting driving mechanism 13 for driving the support mechanism 2 to rotate, and the support mechanism 2 is connected to the rear frame 11 in a sliding and rotational manner.

[0028] The arrangement of the side shift drive mechanism 12 and the tilt drive mechanism 13 enables the support mechanism 2 to move left and right and tilt and rotate, while the frame mechanism 1 always maintains a vertical state. Therefore, for the super-high lifting gantry, the entire fork frame assembly is traditionally set to a tiltable structure and cannot move left and right. The tilting arrangement of the entire fork frame assembly will inevitably make the goods of the whole vehicle shake more easily to fall off when the forklift is transported by the forklift, and more seriously, cause the whole vehicle to overturn front and back. Therefore, the present application is arranged so that the frame mechanism 1 always maintains a vertical state, and then the gantry of the fixed frame mechanism also always maintains a vertical state, which improves the stability and safety of the entire forklift transportation. At the same time, the support mechanism 2 is arranged to be movable left and right, so that the goods can be accurately picked up at one time without moving the forklift, which improves the efficiency of forklift picking up, and avoids the defects of not being easy to align with the fork hole when picking up goods at a traditional high position, and repeatedly backing up and adjusting the vehicle to affect the picking up efficiency.

[0029] In this embodiment, the support mechanism 2 includes an upper cross beam 21, a side plate 22 and a lower cross beam 23. The two ends of the upper cross beam 21 and the lower cross beam 23 are fixedly connected by the side plates 22 respectively. The relative inner sides of the two side plates 22 are provided with overtravel limit grooves 221, and a first slider is provided in the overtravel limit groove 221.

[0030] Trapezoidal bosses are provided on the upper crossbeam 21 and the lower crossbeam 23 for mounting cargo forks. In the process of connecting the side plates 22 with the upper crossbeam 21 and the lower crossbeam 23, screws, bolts, welding and other connection methods can be used.

[0031] In this embodiment, the side-shift drive mechanism 12 includes a first plunger rod 121, a second plunger rod 126, a cylinder 122, a guide rail 123 and a main slider 124. Two coaxial cavities are arranged in the cylinder 122. One end of the first plunger rod 121 and one end of the second plunger rod 126 are respectively inserted into the two cavities and move and rotate freely in the cavities. Each cavity forms a hydraulic cylinder. The two cavities are respectively arranged in cooperation with the first plunger rod 121 and the second plunger rod 126 to form a double-rod double-acting plunger cylinder. The other end of the first plunger rod 121 is inserted into one of the overtravel limit grooves 221 and is mounted on the first slider. The other end of the second plunger rod 126 is inserted into another overtravel limit groove 221 and is mounted on the first slider. The first plunger rod 121 and the second plunger rod 126 are respectively slidably connected to the corresponding first slider, and the cylinder 122 is mounted and fixed on the rear frame 11. The guide rail 123 is fixedly arranged on the cylinder 122 , and a first groove 125 is opened on the lower surface of the main slider 124 along its axial direction. The guide rail 123 is partially arranged in the first groove 125 and is slidably connected to the first groove 125 , and the upper surface of the main slider 124 is nested and fixedly arranged in the upper beam 21 .

[0032] The cylinder 122 is used to support and drive the first plunger rod 121 and the second plunger rod 126 on the one hand, and to guide the movement of the first plunger rod 121 and the second plunger rod 126 on the other hand. The cylinder 122 cooperates with the first plunger rod 121 and the second plunger rod 126 to form a double-rod double-acting plunger cylinder, and the telescopic movement of the first plunger rod 121 and the second plunger rod 126 drives the support mechanism 2 to perform a left and right linear sliding movement. The setting of the overtravel limit groove 221 can prevent the first plunger rod 121 and the second plunger rod 126 from falling off. The main slider 124 is used to support the vertical load of the goods and the horizontal load formed by the cargo force, and at the same time support and fix the support mechanism 2. The setting of the first groove 125 on the main slider 124 allows the guide rail 123 to be set in the guide rail 123, which not only facilitates the left and right movement of the main slider 124 along the guide rail 123, but also facilitates the stability of the main slider 124 when it rotates with the axis of the guide rail 123 as the rotation axis. When the first plunger rod 121 and the second plunger rod 126 move left and right, the main slider 124 moves along the extension direction of the guide rail 123 , thereby driving the movement of the support mechanism 2 .

[0033] It should be noted that the axis of the guide rail 123, the axis of the cylinder 122, and the axis of the main slider 124 are arranged in parallel, so that the support mechanism 2 can stably move left and right to avoid the defect of obstruction of the movement direction.

[0034] In this embodiment, the tilt drive mechanism 13 includes a tilt cylinder 131, a second slider 132 and a slider fixing seat 133 for fixing the second slider 132. The second slider 132 is fixed to the inner side surface of the lower cross beam 23. The tilt cylinder 131 is fixedly arranged on the rear frame 11. The telescopic end of the tilt cylinder 131 is fixedly connected to the slider fixing seat 133.

[0035] The rear frame 11 is provided with a cylinder support 111 for placing the tilt cylinder 131 . The tilt cylinder 131 is nested and fixed in the cylinder support 111 . The tilt cylinder 131 and the rear frame 11 can also be fixed synchronously by screws.

[0036] In order to achieve the tilting of the support mechanism 2, the slider fixing seat 133 is provided with a second groove 1331, and the telescopic end of the tilting oil cylinder 131 is a first spherical structure 1311, and the telescopic end of the tilting oil cylinder 131 is arranged in the second groove 1331 and can rotate in the second groove 1331. Therefore, when the tilting oil cylinder 131 is extended, it will drive the slider fixing seat 133 to move away from the tilting oil cylinder 131. Since the telescopic end of the tilting oil cylinder 131 is the first spherical structure 1311, the extended end of the slider fixing seat 133 can rotate in the second groove 1331, so that the extended end of the tilting oil cylinder 131 is always in the same movement direction, and the support mechanism 2 rotates with the guide rail 123 as the rotation axis to achieve the tilting of the support mechanism 2, while the frame mechanism 1 always maintains a vertical state.

[0037] At the same time, in order to prevent the slider fixing seat 133 from rotating around the axis of the piston rod of the tilting cylinder 131, a guide rod 4 is arranged on one side of the tilting cylinder 131, and one end of the guide rod 4 is a second spherical structure 41. The end of the guide rod 4 away from the second spherical structure 41 is inserted into the guide tube 112 fixedly arranged on the rear frame 11, and the second spherical structure 41 end of the guide rod 4 is slidably inserted into the fourth groove 1332 opened on the block fixing seat 133, and can be rotatable in the fourth groove 1332. The matching arrangement of the guide rod 4 and the fourth groove 1332 enables the guide rod 4 to constrain the support mechanism 2 during the movement, thereby constraining the rotation problem of the support mechanism 2, so that the support mechanism 2 can only rotate with the guide rail 123 as the rotation axis, thereby improving the tilting stability of the fork.

[0038] Regarding the sliding connection relationship between the slider fixing seat 133 and the second slider 132, a fifth groove 1333 is opened on the slider fixing seat 133, the second groove 1331 and the fourth groove 1332 are opened on the same side of the slider fixing seat 133, and the fifth groove 1333 is opened on the other opposite side of the slider fixing seat 133, and the second slider 132 moves in the fifth groove 1333.

[0039] In this embodiment, a limited release block 24 is provided on the upper surface of the lower cross beam 23, and the two ends of the limited release block 24 are respectively fixedly connected to the two side plates 22; the fork frame assembly also includes a limit plate 3, a waist-shaped hole 31 is opened on one side of the limit plate 3, and a third groove 32 is opened on the other side. One end of the bolt passes through the waist-shaped hole 31 to fix the limit plate 3 to the rear frame 11, and the third groove 32 is clamped on the limit release block 24. The groove surface of the third groove 32 is an arc surface, which avoids obstruction of movement between the limit release block 24 and the third groove 32.

[0040] The setting of the waist-shaped hole 31 on the limit plate 3 allows the limit plate 3 to move with the extension and retraction of the tilt cylinder 131. In addition to the waist-shaped hole 31, a slide groove and a slider can also be set. The slide groove is opened on the rear frame 11, and the limit plate 3 is fixedly connected to the slider. The slider moves in the slide groove, and the limit plate 3 can also move with the extension and retraction of the tilt cylinder 131.

[0041] The setting of the limit plate 3 prevents the support mechanism 2 from swinging out of the travel due to the braking inertia acceleration and causing it to fall off the rear frame 1 during the forklift driving and braking process, and limits the support mechanism 2. The third groove 32 on the limit plate 3 is used to hang on the limit block 24, and the arc surface of the third groove 32 allows it to rotate relative to the matching surface, thereby facilitating the mutual movement between the limit block 24 and the third groove 32.

[0042] In this embodiment, during the process of fixing the frame mechanism 1 to the forklift, a roller shaft 15, a chain plate 16 and a stop block 17 are provided on the rear frame 11, the roller shaft 15 is connected to the roller provided on the forklift in a rolling manner, the chain plate 16 is used to install a chain and connect to the rear frame 11, the roller shaft 15 is welded to the rear frame 11, and the stop block 17 is used to prevent the frame mechanism 1 from rising beyond the travel and escaping in the door frame. The frame mechanism 1 is fixed to the door frame and raised and lowered with reference to the existing forklift mechanism.

[0043] A forklift with the dual functions of side shifting and tilting comprises a fork frame assembly, wherein the fork frame assembly is the fork frame assembly described in this embodiment.

[0044] Working process: load the support mechanism 2 onto the frame mechanism 1, and then load the frame mechanism 1 onto the door frame of the forklift body, the cylinder 122 drives the first plunger rod 121 and the second plunger rod 126 to move left and right, thereby realizing the left and right movement of the support mechanism 2, and the main slider 124 moves along the direction of the guide rail 123 to realize the left and right movement of the fork, so that the fork can accurately complete the forking of goods in one time. After completing the forking of the goods, the fork needs to be tilted to avoid the defect of the goods falling. At this time, the tilting cylinder 131 is extended, so that the support mechanism 2 moves with the guide rail 123 as the rotation axis, thereby realizing the tilting of the fork fixed on the support mechanism 2.

[0045] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fork frame assembly with dual functions of side shifting and tilting, characterized in that: The forklift comprises a frame mechanism (1) and a support mechanism (2) for mounting a cargo fork, wherein the frame mechanism (1) comprises a rear frame (11) fixed to a forklift body, a side shift drive mechanism (12) for driving the support mechanism (2) to move left and right, and a tilt drive mechanism (13) for driving the support mechanism (2) to rotate, and the support mechanism (2) is connected to the rear frame (11) in a sliding and rotational manner; The tilt drive mechanism (13) comprises a tilt cylinder (131), a second slider (132) and a slider fixing seat (133) for fixing the second slider (132); the second slider (132) is fixed to the inner side surface of the lower cross beam (23) of the support mechanism (2); the tilt cylinder (131) is fixedly arranged on the rear frame (11); and the telescopic end of the tilt cylinder (131) is fixedly connected to the slider fixing seat (133); The slider fixing seat (133) is provided with a second groove (1331); the telescopic end of the tilting oil cylinder (131) is a first spherical structure (1311); the telescopic end of the tilting oil cylinder (131) is arranged in the second groove (1331) and is rotatable in the second groove (1331); The lateral shift driving mechanism (12) further comprises a guide rail (123) and a main slider (124); the guide rail (123) is fixedly arranged on a cylinder barrel (122) in the lateral shift driving mechanism (12); the cylinder barrel (122) is mounted and fixed on a rear frame (11); a first groove (125) is provided on a lower surface of the main slider (124) along an axial direction thereof; a portion of the guide rail (123) is arranged in the first groove (125) and is slidably connected to the first groove (125); and an upper surface of the main slider (124) is nested and fixedly arranged in an upper crossbeam (21) of the support mechanism (2).

2. The fork frame assembly with the dual functions of lateral shifting and tilting according to claim 1 is characterized in that: The support mechanism (2) comprises an upper crossbeam (21), a side plate (22) and a lower crossbeam (23); the two ends of the upper crossbeam (21) and the lower crossbeam (23) are respectively fixedly connected via the side plates (22); the opposite inner sides of the two side plates (22) are provided with overtravel limit grooves (221); and a first sliding block is provided in the overtravel limit grooves (221).

3. The fork frame assembly with the dual functions of lateral shifting and tilting according to claim 2 is characterized in that: The side shift drive mechanism (12) comprises a first plunger rod (121) and a second plunger rod (126); two coaxial cavities are arranged in the cylinder barrel (122); one end of the first plunger rod (121) and one end of the second plunger rod (126) are respectively inserted into the two cavities and are freely movable and rotatable in the cavities; the other end of the first plunger rod (121) is inserted into one of the overtravel limit grooves (221) and is mounted on the first slider; the other end of the second plunger rod (126) is inserted into another overtravel limit groove (221) and is mounted on the first slider; the first plunger rod (121) and the second plunger rod (126) are respectively slidably connected to the corresponding first slider.

4. The fork frame assembly with the dual functions of lateral shifting and tilting according to claim 3 is characterized in that: The axis of the guide rail (123), the axis of the cylinder barrel (122), and the axis of the main slide block (124) are arranged in parallel.

5. The fork frame assembly with the dual functions of lateral shifting and tilting according to any one of claims 2 to 4, characterized in that: A limited release block (24) is provided on the upper surface of the lower cross beam (23), and two ends of the limited release block (24) are respectively fixedly connected to the two side plates (22); The fork frame assembly also includes a limit plate (3), one side of the limit plate (3) is provided with a waist-shaped hole (31), and the other side of the limit plate (3) is provided with a third groove (32), one end of a bolt passes through the waist-shaped hole (31) to fix the limit plate (3) to the rear frame (11), the third groove (32) is clamped on the limit block (24), and the groove surface of the third groove (32) is an arc surface.

6. The fork frame assembly with the dual functions of lateral shifting and tilting according to claim 1 is characterized in that: A guide rod (4) is provided on one side of the tilt cylinder (131); an end of the guide rod (4) away from the second spherical structure (41) is inserted into a guide tube (112) fixedly provided on the rear frame (11); and an end of the guide rod (4) with the second spherical structure (41) is inserted into a fourth groove (1332) provided on the slider fixing seat (133) and is rotatable in the fourth groove (1332).

7. A forklift with dual functions of side shift and tilt, characterized in that: It comprises a fork frame assembly, and the fork frame assembly is the fork frame assembly described in claim 1.

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