Forklift fork arm carrier device and using method thereof

Abstract

The invention discloses a forklift pallet fork frame device and a using method thereof, the device comprises a portal frame, a telescopic cylinder, a sliding frame and a pallet fork, one end of the telescopic cylinder is connected with the portal frame, the other end of the telescopic cylinder is connected with the sliding frame, the sliding frame is connected with the portal frame, one end of the sliding frame is connected with the pallet fork, and the other end of the sliding frame is connected with a fixed frame. The distance between the adjacent pallet forks can be adjusted through the arrangement of the telescopic cylinders, the sliding frames and the corresponding gears, only the telescopic cylinders are needed to serve as power sources, at least two telescopic cylinders can be arranged, and the number of needed matched hydraulic pipelines is reduced; through the arrangement of the gear and the rack, the friction force generated when the pallet fork moves can be reduced, and the durability is improved; and meanwhile, the problems of reliability reduction, maintenance cost increase and the like caused by the responsible structure can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of fork devices, and in particular relates to a forklift fork frame device and a use method thereof. Background Art

[0002] The automatic lateral movement of the two forks in the existing high-speed forklift is controlled by 4 oil cylinders, which requires many supporting hydraulic pipelines and is difficult to arrange in space; the friction between the forks and the fork frame is large and the wear is serious. Therefore, a new type of automatic fork frame device for high-speed forklifts is needed, which can achieve simple structure, small friction and wear during relative movement, extend service life and reduce energy consumption while meeting the original functions.

[0003] The patent document with publication number CN110526174A discloses a forklift fork mechanism, including a mounting frame and a fork, wherein the mounting frame includes a vertically arranged mounting plate and a mounting seat protruding from the upper end of the mounting plate, a horizontal support rod is arranged through the mounting seat, and the forks are arranged at both ends of the horizontal support rod respectively and the two are horizontally slidably connected; a mounting slot is arranged on the inner side of the mounting seat, and a gear linkage mechanism capable of adjusting the axial spacing of the forks is arranged in the mounting slot, and the gear linkage mechanism includes a motor and a gear fixed on the motor shaft of the motor, and a traction rack is arranged between the fork and the gear, and the traction rack drives the fork to move relatively close or away. The mounting seat and the pushing joint of the mechanism need to bear the load force of the fork, but the mounting seat and the pushing joint are arranged at the upper and lower parts instead of being a whole, which has a certain impact on durability. At the same time, the gears of the mechanism are built-in, which is not convenient for maintenance and repair.

[0004] The patent document with publication number CN107161916A discloses an automatic leveling device and method for a reach-type forklift, including a transmission mechanism, an angle sensor, a tilt cylinder and a controller; one end of the transmission mechanism is fixedly connected to the fork frame, and the other end is connected to the angle sensor for transmission; the angle sensor is fixed to the side shifter assembly to output an electrical signal proportional to the rotation angle of the fork frame; the tilt cylinder is fixed to the side shifter assembly, and its push end faces the fork frame; the controller is connected to the angle sensor and the tilt cylinder, and when receiving a leveling command, it shields other tilt commands and controls the tilt cylinder to move until the upper surface of the horizontal section of the fork rotates to a horizontal position. This patent realizes the movement of the fork through the tilt cylinder and the side shift cylinder, but the tilt cylinder and the side shift cylinder are set in different specifications and are transmitted through a transmission structure, but the transmission mechanism is set in the gap between the side shift cylinder and the cover plate, and the maintenance process is relatively inconvenient. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a forklift fork frame device and a use method thereof.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a forklift fork frame device, comprising a door frame, a telescopic cylinder, a sliding frame and a fork, wherein one end of the telescopic cylinder is connected to the door frame, the other end of the telescopic cylinder is connected to the sliding frame, the sliding frame is connected to the door frame, one end of the sliding frame is connected to the fork, and the other end of the sliding frame is connected to the fixed frame.

[0008] Preferably, one or more sliding frames are arranged on the door frame, and a bending portion, a boss and a connecting base are arranged on the sliding frame, the bending portion is arranged on one side of the top outer wall of the sliding frame, the boss is arranged in the middle of the sliding frame, a fixed seat A is arranged on the boss, the fixed seat A is hinged to the telescopic cylinder, the boss and the sliding frame are arranged vertically, the connecting base is arranged at the bottom of the sliding frame, and the connecting base and the sliding frame are arranged linearly.

[0009] Preferably, a connecting block is provided at one end of the bending portion, the connecting block is vertically arranged to the bending portion, a hole A is provided on the connecting block, the sliding frame is connected to the fixed frame through the connecting block, a baffle is provided on the boss, a hole B is provided on the connecting base, and the connecting base is hinged to the fork through the hole B and the connecting bolt.

[0010] A gear fixing frame A is arranged on the bottom surface of the boss, and the gear fixing frame A is perpendicular to the boss. A gear fixing frame B is arranged on the connecting base, and the gear fixing frame B is perpendicular to the connecting base.

[0011] Preferably, gear A is arranged on the gear fixing frame A, and the axial direction of gear A is perpendicular to the length extension direction of the sliding frame. Gear B is arranged on the gear fixing frame B, and the axial direction of gear B is parallel to the length extension direction of the sliding frame.

[0012] Preferably, a fixed seat B is provided on the portal frame, and the portal frame is hinged to the telescopic cylinder through the fixed seat B. Rack A, rack B and rack C are provided on the portal frame, and the rack A is provided on the upper part of the portal frame, and rack A passes through the fixed frame, and the rack B and rack C are provided on the lower part of the portal frame.

[0013] Preferably, the door frame is in the shape of a rectangular frame, the fixing seat B is arranged on the inner wall of the upper corner of the door frame, the rack A is arranged on the inner wall of the top of the door frame, the rack B is arranged on the inner wall of the bottom of the door frame, and the rack C is arranged on the outer wall of the bottom of the door frame.

[0014] Preferably, the fixing frame comprises a fixing ring and a connecting portion, the fixing ring and the connecting portion are connected, a hole C is arranged on the fixing ring, and a hole D is arranged on the connecting portion.

[0015] Preferably, a gear C is provided on the fixed frame, the gear C is parallel to the length extension direction of the sliding frame, and the telescopic cylinder is a hydraulic cylinder.

[0016] A method for using a forklift fork frame device comprises the following steps:

[0017] S1: When the distance between adjacent sliding frames needs to be expanded, the telescopic cylinder is extended, so that the gear C moves along the meshing rack A to the two sides of the gantry, the gear A moves along the meshing rack B to the two sides of the gantry, and the gear B moves along the meshing rack C to the two sides of the gantry, thereby expanding the distance between adjacent forks.

[0018] S2: When the distance between adjacent sliding racks and forks needs to be reduced, the telescopic cylinder is retracted so that the gear A, the rack B, and the gear C move in the opposite direction to step S1.

[0019] The beneficial effects of the present invention are:

[0020] The present invention can adjust the distance between adjacent forks by setting a telescopic cylinder, a sliding frame and corresponding gears. The device only needs a telescopic cylinder as a power source, and at least two telescopic cylinders can be set, and the number of required supporting hydraulic pipelines is reduced; through the setting of gears and racks, the friction generated when the forks move can be reduced, thereby improving durability; at the same time, it can also avoid problems such as reduced reliability and increased maintenance costs caused by the responsible structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the minimum spacing between adjacent forks of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure in which the fork of the present invention is placed on one side;

[0024] Figure 4 It is a structural schematic diagram of the maximum spacing between adjacent forks of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the sliding frame of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the fixing frame of the present invention;

[0027] In the figure: 1-gantry, 2-fixed seat B, 3-telescopic cylinder, 4-sliding frame, 41-bending part, 42-boss, 43-connecting base, 44-connecting block, 45-hole A, 46-baffle, 47-hole B, 48-connecting bolt, 5-fork, 6-rack A, 7-fixed frame, 71-fixing ring, 72-connecting part, 73-hole C, 74-hole D, 8-gear C, 9-gear fixing frame A, 10-gear A, 11-rack B, 12-fixed seat A, 13-gear B, 14-gear fixing frame B, 15-rack C. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0029] Example:

[0030] like Figures 1 to 6 As shown, a forklift fork frame device includes a door frame 1, a telescopic cylinder 3, a sliding frame 4 and a fork 5, one end of the telescopic cylinder 3 is connected to the door frame 1, and the other end of the telescopic cylinder 3 is connected to the sliding frame 4. The telescopic cylinder 3 is arranged at an angle to limit the movement of the sliding frame 4. The sliding frame 4 is connected to the door frame 1, one end of the sliding frame 4 is connected to the fork 5, and the other end of the sliding frame 4 is connected to the fixed frame 7.

[0031] Two sliding frames 4 are arranged on the door frame 1, and a bending portion 41, a boss 42 and a connecting base 43 are arranged on the sliding frame 4. The bending portion 41 is arranged on one side of the top outer wall of the sliding frame 4, and the boss 42 is arranged in the middle of the sliding frame 4. A fixed seat A12 is arranged on the boss 42, and the fixed seat A12 is hinged to the telescopic cylinder 3. The boss 42 is vertically arranged with the sliding frame 4, and the connecting base 43 is arranged at the bottom of the sliding frame 4, and the connecting base 43 and the sliding frame 4 are linearly arranged.

[0032] A connecting block 44 is provided at one end of the curved portion 41, and the connecting block 44 is vertically arranged with the curved portion 41. A hole A45 is provided on the connecting block 44, and the sliding frame 4 is connected to the fixed frame 7 through the connecting block 44. A baffle 46 is provided on the boss 42, and a hole B47 is provided on the connecting base 43. The connecting base 43 is hinged to the fork 5 through the hole B47 and the connecting bolt 48.

[0033] A gear fixing frame A9 is disposed on the bottom surface of the boss 42 , and the gear fixing frame A9 is perpendicular to the boss 42 . A gear fixing frame B14 is disposed on the connecting base 43 , and the gear fixing frame B14 is perpendicular to the connecting base 43 .

[0034] The gear fixing frame A9 is rotatably connected to the gear A10, and the axial direction of the gear A10 is perpendicular to the length extension direction of the sliding frame 4. The gear fixing frame B14 is rotatably connected to the gear B13, and the axial direction of the gear B13 is parallel to the length extension direction of the sliding frame 4. This arrangement enables the device to evenly disperse the force through the three gears on a single sliding frame 4 when subjected to force, and at the same time, this arrangement can also limit the position of the sliding frame 4 on the door frame 1.

[0035] A fixed seat B2 is arranged on the door frame 1, and the door frame 1 is hinged to the telescopic cylinder 3 through the fixed seat B2. Rack A6, rack B11 and rack C15 are welded and connected on the door frame 1. The rack A6 is arranged on the upper part of the door frame 1, and the rack A6 passes through the fixed frame 7. The rack B11 and rack C15 are arranged on the lower part of the door frame 1.

[0036] The door frame 1 is in the shape of a rectangular frame, the fixing seat B2 is arranged on the inner wall of the upper corner of the door frame 1, the rack A6 is arranged on the top inner wall of the door frame 1, the rack B11 is arranged on the bottom inner wall of the door frame 1, and the rack C15 is arranged on the bottom outer wall of the door frame 1.

[0037] The fixing frame 7 includes a fixing ring 71 and a connecting portion 72. The fixing ring 73 is connected to the connecting portion 71. The fixing ring 71 is provided with a hole C73, two holes C73 are symmetrically arranged, and the connecting portion 72 is provided with a hole D74, and a plurality of holes D74 are linearly arranged. The connecting portion 71 is connected to the connecting block 44, and the fixing frame 7 is connected and fixed to the sliding frame 4 by using corresponding bolts to simultaneously penetrate the coaxially arranged holes D74 and holes A45.

[0038] The fixed frame 7 is rotatably connected to a gear C8, which is parallel to the length extension direction of the sliding frame 4. The telescopic cylinder 3 is a hydraulic oil cylinder, and a two-stage telescopic or multi-stage telescopic cylinder 3 can be selected according to the setting position of the fixed seat A12 and the fixed seat B2. The gear C8 is connected to the fixed ring 71 through the corresponding shaft through hole C73.

[0039] A method for using a forklift fork frame device comprises the following steps:

[0040] S1: When the distance between adjacent sliding frames 4 needs to be expanded, the telescopic cylinder 3 is extended, so that the gear C8 moves along the meshing rack A6 to both sides of the gantry 1, the gear A10 moves along the meshing rack B11 to both sides of the gantry 1, and the gear B13 moves along the meshing rack C15 to both sides of the gantry 1, thereby expanding the distance between adjacent forks 5.

[0041] S2: When the distance between adjacent sliding racks 4 and forks 5 needs to be reduced, the telescopic cylinder 3 is retracted so that the gear A10, the rack B11 and the gear C8 move in the opposite direction to step S1.

Claims

1. A forklift fork frame device, characterized in that: The utility model comprises a gantry (1), a telescopic cylinder (3), a sliding frame (4) and a fork (5), wherein one end of the telescopic cylinder (3) is connected to the gantry (1), the other end of the telescopic cylinder (3) is connected to the sliding frame (4), the sliding frame (4) is connected to the gantry (1), one end of the sliding frame (4) is connected to the fork (5), and the other end of the sliding frame (4) is connected to a fixed frame (7).

2. A forklift fork frame device according to claim 1, characterized in that: One or more sliding frames (4) are arranged on the door frame (1); a curved portion (41), a boss (42) and a connecting base (43) are arranged on the sliding frame (4); the curved portion (41) is arranged on one side of the top outer wall of the sliding frame (4); the boss (42) is arranged in the middle of the sliding frame (4); a fixed seat A (12) is arranged on the boss (42); the fixed seat A (12) is hinged to the telescopic cylinder (3); the boss (42) and the sliding frame (4) are arranged vertically; the connecting base (43) is arranged at the bottom of the sliding frame (4); and the connecting base (43) and the sliding frame (4) are arranged linearly.

3. A forklift fork frame device according to claim 2, characterized in that: A connecting block (44) is provided at one end of the curved portion (41), the connecting block (44) and the curved portion (41) are arranged vertically, a hole A (45) is provided on the connecting block (44), the sliding frame (4) is connected to the fixed frame (7) through the connecting block (44), a baffle (46) is provided on the boss (42), a hole B (47) is provided on the connecting base (43), and the connecting base (43) is hinged to the fork (5) through the hole B (47) and the connecting bolt (48).

4. A forklift fork frame device as claimed in claim 2, characterized in that: A gear fixing frame A (9) is arranged on the bottom surface of the boss (42), and the gear fixing frame A (9) is perpendicular to the boss (42). A gear fixing frame B (14) is arranged on the connecting base (43), and the gear fixing frame B (14) is perpendicular to the connecting base (43).

5. A forklift fork frame device as claimed in claim 4, characterized in that: A gear A (10) is arranged on the gear fixing frame A (9), and the axial direction of the gear A (10) is perpendicular to the length extension direction of the sliding frame (4). A gear B (13) is arranged on the gear fixing frame B (14), and the axial direction of the gear B (13) is parallel to the length extension direction of the sliding frame (4).

6. A forklift fork frame device according to claim 1, characterized in that: A fixed seat B (2) is arranged on the door frame (1), and the door frame (1) is hinged to the telescopic cylinder (3) through the fixed seat B (2). A rack A (6), a rack B (11) and a rack C (15) are arranged on the door frame (1), and the rack A (6) is arranged on the upper part of the door frame (1), and the rack A (6) passes through the fixed frame (7), and the rack B (11) and the rack C (15) are arranged on the lower part of the door frame (1).

7. A forklift fork frame device according to claim 6, characterized in that: The door frame (1) is in the shape of a rectangular frame, the fixing seat B (2) is arranged on the inner wall of the upper corner of the door frame (1), the rack A (6) is arranged on the inner wall of the top of the door frame (1), the rack B (11) is arranged on the inner wall of the bottom of the door frame (1), and the rack C (15) is arranged on the outer wall of the bottom of the door frame (1).

8. A forklift fork frame device according to claim 1, characterized in that: The fixing frame (7) comprises a fixing ring (71) and a connecting portion (72), wherein the fixing ring (71) and the connecting portion (72) are connected, a hole C (73) is arranged on the fixing ring (71), and a hole D (74) is arranged on the connecting portion (72).

9. A forklift fork frame device according to claim 1, characterized in that: A gear C (8) is arranged on the fixed frame (7), the gear C (8) is parallel to the length extension direction of the sliding frame (4), and the telescopic cylinder (3) is a hydraulic cylinder.

10. A forklift fork frame device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: When the distance between adjacent sliding frames (4) needs to be enlarged, the telescopic cylinder (3) is extended, so that the gear C (8) moves along the meshing rack A (6) to the two sides of the door frame (1), the gear A (10) moves along the meshing rack B (11) to the two sides of the door frame (1), and the gear B (13) moves along the meshing rack C (15) to the two sides of the door frame (1), thereby achieving the enlargement of the distance between adjacent forks (5); S2: When the distance between adjacent sliding frames (4) and forks (5) needs to be reduced, the telescopic cylinder (3) is retracted so that the gear A (10), the rack B (11) and the gear C (8) move in the opposite direction to step S1.

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