Forklift operating platform

Abstract

The invention discloses an operating table for a forklift, which relates to the field of forklifts and comprises an operating table body, a column assembly, a rotating bracket assembly and a steering shaft assembly. The invention has a simple structure, and can adjust the matching structure between the forklift operating table and the steering system and the positional relationship of the structures so that the forklift operating table can be rotated and adjusted within a certain angle range relative to the steering system; the height of the flip operating table can be adjusted according to the comfort of the operator, and it is also convenient for after-sales maintenance; at the same time, in order to save operating space, the invention adjusts the control method for the direction of the forklift. Compared with the traditional steering method of the forklift in the prior art, the invention adopts an electric steering method, which saves steering effort and saves the installation space of the steering machine.

Description

Technical Field

[0001] The invention relates to the field of forklifts, in particular to an operating platform for a forklift. Background Art

[0002] As the main force in material handling equipment, forklifts are used for loading and unloading, stacking and short-distance transportation, involving operations such as forward and backward movement, lifting and tilting, steering, switching driving modes, starting lights, braking, and viewing instrument information. The current problem is that for environments with small operating space, customers choose forklifts with smaller appearance and structure, especially counterbalanced forklifts. Due to the structural limitations of the forklift itself, it is impossible to directly adopt the traditional installation method of the steering system and electrical components of the counterbalanced models on the market, otherwise it will lead to cramped operating space and inconvenient operation. Summary of the invention

[0003] The object of the present invention is to provide an operating platform for a forklift, which solves the problems raised in the above-mentioned background technology by adjusting the matching structure and positional relationship of the forklift operating platform in the steering system.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An operating platform for a forklift, comprising:

[0006] An operating table body for defining the position of operating hardware thereon;

[0007] A column assembly used to connect the operating platform body to the vehicle frame and to limit the vertical height of the operating platform body;

[0008] A rotating bracket assembly connected to the column assembly and matched with the operating table body, used to control and fix the rotation angle of the operating table body relative to the column assembly;

[0009] A steering shaft assembly connected to the steering wheel that feeds back the angle signal through an encoder to achieve electrical control of the steering wheel.

[0010] As a further solution of the present invention: the rotating bracket assembly includes a rotating bracket and a mounting plate for fixing the operating table body, the cross-section of the rotating bracket is semi-open, and coaxial bracket pin holes are provided on both outer surfaces of the semi-open groove.

[0011] As a further solution of the present invention: the column assembly includes a column, the column is formed with a first column end face and a second column end face, the column is provided with coaxial column end face pin holes on the two column end faces, the two inner side faces of the rotating bracket are respectively fitted with the two column end faces, and the column and the rotating bracket are connected and fixed by a pin shaft passing through the bracket pin hole and the column end face pin hole.

[0012] As a further solution of the present invention: a track hole is provided on an outer surface of the semi-open groove of the rotating bracket, and the track hole is an arc waist-shaped hole with an angle. A threaded shaft is provided in the track hole, and the threaded shaft is fixed to the end face of another column away from the end face where the track hole is located. A threaded shaft limit block is sleeved on the threaded shaft, and a rubber pad and a gasket are sleeved on the threaded shaft in sequence, and an adjustment handle is threadedly connected to the threaded shaft.

[0013] As a further solution of the present invention: the mounting plate is provided with a first notch, a second notch, and a mounting plate threaded hole, and an assembly bracket for fixing the operating table body is fixedly connected to the mounting plate.

[0014] As a further solution of the present invention: the steering shaft assembly includes a steering shaft bracket, a steering shaft, and an encoder fixed with the steering shaft and rotating synchronously, the steering shaft bracket is provided with a bearing seat, a bearing is coaxially installed in the bearing seat, the lower surface of the steering shaft bracket is fixedly connected to the encoder mounting frame, the steering shaft is coaxially fixedly arranged on the steering shaft bracket, the steering shaft is provided with a slot for fixing the encoder, and the steering shaft and the steering wheel are fixed in the axial direction and circumferential direction of the steering shaft.

[0015] As a further solution of the present invention: the operating table body includes an upper operating table and a lower operating table which are fixedly connected to each other, and a plurality of column brackets for assembly and fixation with a vehicle body are welded on the column.

[0016] As a further solution of the present invention: the upper surface of the upper operating table is provided with a plurality of mounting holes for limiting and fixing the hardware on the operating table.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a novel structure, and by adjusting the matching structure between the forklift operating platform and the steering system and the positional relationship of the structure, the forklift operating platform can be rotated and adjusted within a certain angle range relative to the steering system; the height of this flip operating platform can be adjusted according to the operator's comfort, and it is also convenient for after-sales maintenance; at the same time, in order to save operating space, the present invention adjusts the control method of the forklift direction. Compared with the traditional steering method of the forklift in the prior art, the present invention adopts an electric steering method, which saves steering effort and saves the installation space of the steering machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the assembly structure of an operating table for a forklift;

[0019] Figure 2 The figure is a schematic diagram of the appearance structure of an upper operating platform of an operating platform for a forklift;

[0020] Figure 3It is a structural schematic diagram of the back side of an upper operating table of an operating table for a forklift;

[0021] Figure 4 It is a structural schematic diagram of a lower operating platform of an operating platform for a forklift;

[0022] Figure 5 It is a schematic diagram of the principle structure of the fixed cooperation between the rotating bracket and the column in the operating table for a forklift;

[0023] Figure 6 This is a schematic diagram of the structure of a center column of a forklift operating platform;

[0024] Figure 7 It is a schematic diagram of the structure of a threaded shaft in an operating table for a forklift;

[0025] Figure 8 This is a schematic diagram of the structure of a threaded shaft limit block in a forklift operating table;

[0026] Fig. 9 It is a structural schematic diagram of a rotating bracket assembly in an operating table for a forklift;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of a steering wheel in an operating console for a forklift;

[0028] Fig.11 It is a schematic diagram of the cross-sectional structure of a steering wheel installed in a forklift operating console;

[0029] Fig.12 It is a schematic diagram of the three-dimensional structure of a steering wheel and a steering shaft in an operating console for a forklift;

[0030] Fig.13 It is a schematic diagram of the three-dimensional structure of a steering wheel steering shaft bracket in a forklift operating console;

[0031] Fig.14 This is a schematic diagram of the structure of an encoder mounting frame in an operating table for a forklift;

[0032] Fig.15 It is a schematic diagram of the structure of a forklift operating platform in different states;

[0033] In the figure: 1-upper operating table, 11-upper operating table surface, 12-first internally threaded boss, 13-second internally threaded boss, 111-first mounting hole, 112-second mounting hole, 113-third mounting hole, 114-fourth mounting hole, 115-fifth mounting hole, 116-sixth mounting hole, 2-lower operating table, 3-rotating bracket assembly, 31-rotating bracket, 311-track hole, 312-bracket pin hole, 32-mounting plate, 321-first notch, 322-second notch, 323-mounting plate threaded hole, 33-bracket, 331-bracket through hole, 34-first reinforcing rib, 35-second reinforcing rib, 4-adjusting handle assembly, 41-adjusting handle, 42-washer, 43-rubber pad, 44-threaded shaft, 441-threaded shaft end face, 44 2-threaded shaft limiting surface, 443-threaded end, 5-column assembly, 51-column, 511-first pin hole, 512-second pin hole, 513-threaded shaft hole, 514-first column end face, 515-second column end face, 52-threaded shaft limiting block, 521-first limiting block end face, 522-second limiting block end face, 523-limiting surface, 53-column bracket, 6-pin shaft, 7-elastic retaining ring, 8-steering wheel, 81-steering wheel handle ball, 9-steering shaft assembly, 91-bearing seat, 92-steering shaft bracket, 921-bearing seat mounting hole, 922-steering shaft bracket threaded hole, 93-encoder mounting frame, 931-encoder mounting frame threaded hole, 94-bearing, 95-fastening bolt, 96-steering shaft, 961-thread, 97-flat key. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 In an embodiment of the present invention, a forklift operating console includes an operating console body, a column assembly, a rotating bracket assembly and a steering shaft assembly. The operating console body is used to limit the positions of various operating hardware thereon, the column assembly is used to connect the operating console body and the frame, and is also used to limit the vertical height of the operating console body, the steering shaft assembly is connected to the steering wheel, and an encoder is used to feedback a turning angle signal to realize electrical control of the steering wheel.

[0036] like Fig. 9 As shown, the rotating bracket assembly 3 includes a rotating bracket 31 and a mounting plate 32. The cross section of the rotating bracket 31 is a semi-open type. The bracket pin holes 312 are processed on both outer surfaces of the semi-open type groove. The bracket pin holes at the two locations are coaxial. Figure 5-6 As shown, the inner side of the rotating bracket 31 is respectively fitted with the two outer end faces of the column 51, which are the first column end face 514 and the second column end face 515 respectively, and the two bracket pin holes 312 are respectively coaxially arranged with the first pin hole 511 and the second pin hole 512 of the column 51. The pin shaft 6 passes through the first bracket pin hole 312, the first pin hole 511, the second pin hole 512, and the second bracket pin hole in sequence, and is finally limited by the elastic retaining ring 7. At this time, the rotating bracket 31 and the column 51 are in an active state and cannot be locked in a limited position.

[0037] like Figure 5-8 As shown, the rotating bracket has a track hole 311 on one of the outer surfaces of the semi-open groove. In this embodiment, the track hole 311 is a circular waist hole with an angle of 115°, so that the operating table body can be flipped up and down to a specified position. A threaded shaft 44 is provided in the track hole, and the threaded shaft is fixed to the end face of another column away from the end face where the track hole is located. A threaded shaft limit block 52 is sleeved on the threaded shaft, and a rubber pad 43 and a washer 42 are sleeved on the threaded shaft in sequence. An adjustment handle 41 is threadedly connected to the threaded shaft. The threaded shaft limit block 52 is fixed to the surface of the column 51 by riveting, the second limit block end face 522 is fitted with the first column end face 514, the center of the threaded shaft limit block 52 is coaxial with the threaded shaft hole 513, the threaded shaft 44 passes through the hole of the threaded shaft limit block 52, the threaded shaft hole 513 and the track hole 311 in sequence, the threaded shaft end face 441 is fitted with the first limit block end face 521, the threaded shaft limit surface 442 is fitted with the limit surface 523, the threaded end 443 of the threaded shaft is assembled with the rubber pad 43 and the washer 42 in sequence, and finally the adjusting handle 41 is assembled, and the internal thread of the adjusting handle 41 is connected to the threaded end 443 through threads, so as to realize two different states of loosening and locking of the rotating bracket 31 and the column 51.

[0038] like Fig. 9 As shown, according to the components actually used, the mounting plate 32 is processed with a first mounting plate notch 321, a second mounting plate notch 322, and a mounting plate threaded hole 323, the rotating bracket 31 is connected to the mounting plate 32 by riveting, and the mounting bracket 33 is fixed on the mounting plate 32. The bracket 33 can be fixed on the mounting plate 32 by welding. In this embodiment, four brackets 33 are welded according to the actual installation position requirements. In order to improve the structural strength, the mounting plate 32 is welded with a first reinforcing rib 34 and a second reinforcing rib 35.

[0039] The steering wheel in the present invention adopts the electric steering control mode. The connection between the steering wheel 8 and the encoder structure is realized through the steering shaft assembly 9. Figure 10-14As shown, the bearing seat mounting hole 921 of the steering shaft bracket 92 is welded concentrically with the bearing seat 91, and the bearing 94 is assembled on the inner surface of the bearing seat 91. The steering shaft 96 achieves the installation coaxiality requirement with the steering shaft bracket 92 through its own step surface structure and the bearing 94. The lower surface of the steering shaft bracket 92 is welded and assembled with the lower surface of the encoder mounting frame 93, and the coaxiality technical requirements are set for the two. After welding, the three groups of mounting plate threaded holes 323 and the three groups of bearing seat mounting holes 921 of the steering shaft bracket 92 are connected by bolts; the threaded hole 931 of the encoder mounting frame 93 is used to install the encoder, and the lower end of the steering shaft 96 is designed with a notch, and the notch on the encoder is matched with the notch of the steering shaft 96, so as to realize the synchronous rotation of the encoder and the steering shaft 96. The upper end of the steering shaft 96 is designed with a thread 961 and a keyway, and the interior of the steering wheel is designed with a keyway, which is connected by a flat key 97 to achieve circumferential fixation of the steering wheel 8 and the steering shaft 96; when the steering wheel 8 is axially installed on the steering shaft 96, the thread 961 is extended and axial fixation is achieved through a nut. In short, the steering wheel 8 rotates synchronously with the steering shaft 96, and the steering shaft 96 rotates synchronously with the encoder. When the operator turns the steering wheel handle ball 81, the encoder is driven to rotate synchronously, thereby realizing the collection of the steering signal.

[0040] like Figure 2-4 As shown, the upper operating platform 1 is designed with a first internally threaded boss 12 and a second internally threaded boss 13, and the lower operating platform 2 is designed with a lower operating platform through hole 21. The four groups of second internally threaded bosses 13 can be matched and installed with the bracket through holes 331 of the mounting plate 32 by bolts, and the bolts are assembled from below the bracket through holes 331 to achieve fixed installation of the upper operating platform 1; the first internally threaded boss 12 of the upper operating platform 1 is matched and installed with the lower operating platform through holes 21 of the lower operating platform 2, and the fixed assembly of the upper operating platform 1 and the lower operating platform 2 is achieved by assembling bolts below the lower operating platform 2.

[0041] like Figure 1-2 As shown, the upper surface of the upper operating table is provided with a plurality of mounting holes for limiting and fixing the hardware on the operating table. The upper surface 11 of the upper operating table is designed with a first mounting hole 111, a second mounting hole 112, a third mounting hole 113, a fourth mounting hole 114, and a fifth mounting hole 115, which are respectively used to assemble the display instrument, the speed mode switch, the emergency stop switch, the key switch, and the forward and reverse shift buttons according to the specific layout requirements; the sixth mounting hole 116 is used to leave space for placing the steering wheel position.

[0042] Several groups of column brackets 53 for assembly and fixation with the vehicle body are welded on the column. The column brackets are designed with threaded holes. The column assembly 5 is fixedly assembled to the vehicle body by bolt connection, thereby realizing the assembly of the entire operating platform structure and the vehicle body.

[0043] When the present invention is used, Fig.15As shown, when the forklift driver gets on or off the vehicle, he needs to adjust the position of the operating platform, loosen the adjustment handle 41, and the rotating bracket 31 and the column 51 are in an active state. After the operating platform is adjusted to a suitable position, the adjustment handle 41 is locked again to fix the inclination angle of the rotating bracket 31. When the rotating bracket 31 is flipped to different positions, different states of the operating platform can be achieved. The present invention has a novel structure. By adjusting the matching structure of the forklift operating platform in the steering system and the positional relationship of the structure, the forklift operating platform can be rotated and adjusted within a certain angle range; the flipped operating platform can adjust the height according to the operator's comfort, and is also convenient for after-sales maintenance; at the same time, in order to save operating space, the present invention adjusts the control method of the forklift direction. Compared with the traditional steering method of the forklift in the prior art, the present invention adopts an electric steering method, which saves effort in steering and saves the installation space of the steering machine.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A forklift operating platform, characterized in that: include: An operating table body for defining the position of operating hardware thereon; A column assembly used to connect the operating platform body to the vehicle frame and to limit the vertical height of the operating platform body; A rotating bracket assembly connected to the column assembly and matched with the operating table body, used to control and fix the rotation angle of the operating table body relative to the column assembly; and a steering shaft assembly connected to the steering wheel and feeding back a steering angle signal via an encoder to realize electrical control of the steering wheel; The rotating bracket assembly comprises a rotating bracket (31) and a mounting plate (32) for fixing the operating table body; the rotating bracket (31) has a semi-open cross section, and coaxial bracket pin holes are provided on two outer surfaces of the semi-open groove; The column assembly comprises a column, wherein the column is formed with a first column end face (514) and a second column end face (515), wherein the column is provided with coaxial column end face pin holes on the two column end faces, wherein the two inner side faces of the rotating bracket are respectively fitted with the two column end faces, and the column and the rotating bracket are connected and fixed via a pin shaft (6) passing through the bracket pin hole and the column end face pin hole; a threaded shaft hole (513) is provided through the second column end face (515) of the column; A track hole (311) is provided on an outer surface of the semi-open groove of the rotating bracket. The track hole is a circular arc waist hole with an included angle. A threaded shaft is provided in the track hole. The threaded shaft is fixed to the end face of another column away from the end face where the track hole is located. The threaded shaft has a special-shaped head, and the side surface of the special-shaped head facing the second column end face (515) is the threaded shaft end face (441). The outer peripheral surface of the special-shaped head of the threaded shaft is the threaded shaft limiting surface (442). A threaded shaft limiting block (52) is sleeved on the threaded shaft. The threaded shaft limiting block (52) is fixed to the surface of the column (51) by riveting. The side surface of the threaded shaft limiting block (52) facing the second column end face (515) is the second limiting block end face (522). A special-shaped hole matching the special-shaped head is provided through the threaded shaft limiting block (52), and the inner surface of the special-shaped hole is the limiting surface (523). The side of the shaft stop block (52) away from the second column end face (515) is the first stop block end face (521); the second stop block end face (522) is in contact with the second column end face (515); the center of the threaded shaft stop block (52) is coaxial with the threaded shaft hole (513); the threaded shaft (44) passes through the hole of the threaded shaft stop block (52), the threaded shaft hole (513) and the track hole (311) in sequence; the threaded shaft end face (441) The threaded shaft (442) is fitted with the second column end surface (515), the threaded shaft limiting surface (442) is fitted with the limiting surface (523), the threaded end (443) of the threaded shaft is assembled with a rubber pad (43) and a washer (42) in sequence, and finally the adjustment handle (41) is assembled, and the internal thread of the adjustment handle (41) is connected to the threaded end (443) through a thread, so as to realize two different states of loosening and locking of the rotating bracket (31) and the column (51).

2. The forklift operating platform according to claim 1, characterized in that: The mounting plate is provided with a first notch (321), a second notch (322), and a mounting plate threaded hole (323); a bracket (33) for fixing the operating table body is fixedly connected to the mounting plate.

3. The forklift operating platform according to claim 1, characterized in that: The steering shaft assembly comprises a steering shaft bracket, a steering shaft, and an encoder fixed with the steering shaft and rotating synchronously, wherein a bearing seat (91) is arranged in the steering shaft bracket, a bearing (94) is coaxially arranged in the bearing seat, a lower surface of the steering shaft bracket is fixedly connected to an encoder mounting frame, a steering shaft is coaxially fixedly arranged on the steering shaft bracket, a slot for fixing and placing the encoder is provided on the steering shaft, and the steering shaft is fixed to the steering wheel in both the axial direction and the circumferential direction of the steering shaft.

4. The forklift operating platform according to claim 1, characterized in that: The operating table body comprises an upper operating table and a lower operating table which are fixedly connected to each other, and a plurality of column brackets (53) for assembly and fixation with a vehicle body are welded on the column.

5. The forklift operating platform according to claim 4, characterized in that: The upper surface of the upper operating table is provided with a plurality of mounting holes for limiting and fixing the hardware on the operating table.

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