CN112645252A

CN112645252A - Multifunctional forklift

Info

Publication number: CN112645252A
Application number: CN202011626117.2A
Authority: CN
Inventors: 黄施卫; 张伟; 吴道秀
Original assignee: Nanjing Xinding Automation Equipment Co ltd
Current assignee: Nanjing Xinding Automation Equipment Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-13

Abstract

The invention discloses a multifunctional forklift, which comprises a frame, a portal frame, front wheels, a speed measuring structure, an angle measuring structure, a sliding block adjusting structure and a double-oil-cylinder structure, wherein the portal frame comprises a forward moving frame, the steering structure comprises a slewing bearing and a steering support, the steering support is arranged above the front wheels, the speed measuring structure is connected to the other side of a rim and connected with the steering support, and the angle measuring structure is arranged in a central hole of the slewing bearing and connected with the frame; one end of the double-oil-cylinder structure is fixedly connected to the frame, and the other end of the double-oil-cylinder structure is connected with the forward moving frame. The speed measurement is completed through the speed measurement structure, the steering angle measurement is completed through the angle measurement structure, the moving stroke of the forward moving frame is improved through the double-oil-cylinder structure, and the distance between two relatively moving structure frames in the forklift is adjusted through the sliding block adjusting structure.

Description

Multifunctional forklift

Technical Field

The invention belongs to the technical field of forklifts, and particularly relates to a multifunctional forklift.

Background

The forklift is a plant carrying vehicle and is used for carrying out loading, unloading, stacking and short-distance transportation operation on finished pallet goods, and the existing forklift has many defects, such as that most forklifts are not provided with a structure for measuring speed or angle; for example, due to the size of the forklift, only one oil cylinder can be used for moving the front moving frame in the gantry, so that the stroke is short, and the requirements of most new plants cannot be met; for another example, the distances between the upper door frame and the frame, between the outer door frame and the inner door frame, and the like of the forklift are often required to be adjusted, and the conventional gasket adjusting mode is inconvenient to operate due to the forklift space.

Disclosure of Invention

The invention aims to provide a multifunctional forklift to overcome the technical problems.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a multifunctional forklift, includes frame, portal and front wheel, the front wheel passes through the driving motor that rim one side is connected and rotates, just driving motor installs through turning to the structure on the frame, the portal includes the antedisplacement frame, it includes slewing bearing and turns to the support to turn to the structure, it locates to turn to the support the top of front wheel, multifunctional forklift still includes:

the speed measuring structure is connected to the other side of the rim, is connected with the steering support and is used for measuring speed;

the angle measuring structure is arranged in a central hole of the slewing bearing, is connected with the frame and is used for measuring an angle;

the sliding block adjusting structure is used for adjusting the distance between two structure frames which move relatively in the forklift;

and one end of the double-oil-cylinder structure is fixedly connected to the frame, and the other end of the double-oil-cylinder structure is connected with the forward moving frame and used for improving the moving stroke of the forward moving frame.

Further, the speed measuring structure and the angle measuring structure respectively comprise a measurer and a mounting piece connected with the measurer;

the measurer of the speed measuring structure is connected to the other side of the rim and can synchronously rotate with the front wheel, and the mounting piece of the speed measuring structure is fixedly connected with the steering support;

the angle measuring structure is arranged in a central hole of the slewing bearing, a measurer of the angle measuring structure is connected to the steering support and can synchronously rotate with the steering support, and an installation part of the angle measuring structure is fixedly connected to a frame leg of the frame.

Further, the caliber of the speed measuring structure is an incremental encoder, the mounting part comprises a transition disc, an encoder connecting frame and a connecting plate, the transition disc is fixedly connected to the rim, the incremental encoder is fixedly connected to the encoder connecting frame, a rotor of the incremental encoder penetrates through the encoder connecting frame and the transition disc, the encoder connecting frame extends to the outside of the front wheel and is connected with the connecting plate, and the connecting plate is vertically arranged and is connected with the steering support.

Furthermore, the encoder connecting frame is of a cylindrical structure with an opening at one end, a through hole convenient for the rotor of the incremental encoder to penetrate through is formed in the other end of the encoder connecting frame, a circular ring-shaped plate extends out of the outer edge of one end, close to the opening, of the cylindrical structure, a limiting hole used for being connected with the encoder connecting frame is formed in the connecting plate, and the circular ring-shaped plate is fixedly connected in the limiting hole; the limiting hole is connected with an outer cover plate for covering the opening of the encoder connecting frame

Further, the caliber of the angle measuring structure is an absolute value encoder, and the mounting part comprises a coupler, an encoder bracket and a fixed cover plate, the coupler is fixedly connected to the steering bracket, the absolute value encoder is connected to the encoder bracket, and a rotor of the absolute value encoder passes through the encoder bracket, the encoder bracket is connected to the coupler, a mounting hole is arranged in a center hole of the slewing bearing on the frame leg, the encoder bracket is connected to the mounting hole, and the fixed cover plate is connected to the mounting hole and covers the encoder bracket.

Further, the slider is adjusted the structure and is located between two structure framves, and including connecting block, guide block and the slider that sets gradually side by side, the slider with guide block looks rigid coupling, be equipped with the guiding hole on the guide block, the connecting block orientation rigid coupling has with the uide pin axle that the guiding hole corresponds on the side of guide block, be connected with on the connecting block and carry out the top to the guide block and advance the bolt that advances that makes the guide block carry out the removal along the axis direction of uide pin axle, the guide block with connect through a elasticity bolt between the connecting block, the connecting block rigid coupling is on one of them structure frame, and corresponding slider hugs closely in another structure frame.

Further, two hydro-cylinder structures include interconnect and parallel arrangement's two hydro-cylinders and follow the length direction of two hydro-cylinders carries out two connection oil pipe that set up, two flexible ends of two hydro-cylinders respectively with the frame looks rigid coupling that moves ahead, and the flexible opposite direction of two flexible ends, connect oil pipe's both ends respectively be close to in the both ends of hydro-cylinder, two connect oil pipe along its length direction with the end connect respectively on two hydro-cylinders, and every both ends of connecting oil pipe dock respectively on two hydro-cylinders.

Furthermore, two oil port joints are arranged on the two oil cylinders, and the two oil port joints are arranged at two ends of one of the oil cylinders or at the same end of the two oil cylinders.

Further, turn to the structure and still include steering cylinder, fixed bolster and connecting pin axle, the fixed bolster includes that it is just parallel to set up from top to bottom two transverse connection boards of the transverse plate of the frame leg of frame, two transverse connection board rigid couplings are in on the frame leg, steering cylinder's flexible end is in through preceding round pin hub connection on the steering support, processing has a mounting hole on the transverse plate, connecting pin axle connection is in just connect with vertical mode on the mounting hole on two transverse connection boards, steering cylinder's stiff end is located between two transverse connection boards and is connected connecting pin axle is last.

Has the advantages that:

the speed measuring structure is arranged on one side outside the rim and is connected to the steering support, so that the speed measuring structure and the front wheel can be synchronously steered;

the angle measurement structure is arranged in the slewing bearing and connected in the frame, so that the steering angle of the forklift is measured, the forklift is arranged in the slewing bearing, extra installation space is not needed, and the forklift can be directly installed above the frame legs of the frame, so that the measurement is accurate, the structure is simple, and the installation and the disassembly are convenient;

the invention realizes the gap adjustment between the two structure frames through the guide block, the guide pin shaft and the jacking bolt in the slide block adjusting structure, and the slide block used by the invention does not influence the relative movement between the two structure frames;

the invention can double the moving stroke of the forward moving frame on the basis of the existing oil cylinder through the double-oil-cylinder structure, and does not need to adjust the structural space of the forklift.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of an unassembled explosion structure of the tachometer structure of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2 assembled;

FIG. 4 is a schematic illustration of an unassembled exploded view of the angle measurement structure of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4 assembled;

FIG. 6 is a schematic diagram of an explosion structure between an inner gantry and an outer gantry of a slider adjustment structure of the present invention;

FIG. 7 is a schematic structural view of a dual cylinder structure according to the present invention;

FIG. 8 is a schematic view of the steering structure according to the present invention;

in the figure: 10. a frame; 11. a transverse plate; 20. a gantry; 21. a forward moving frame; 22. an inner gantry; 23. an outer gantry; 30. a front wheel; 31. a drive motor; 32. a rim; 40. a steering structure; 41. a slewing bearing; 42. a steering bracket; 43. a steering cylinder; 44. fixing a bracket; 441. a transverse connecting plate; 45. connecting a pin shaft; 46. a front pin shaft; 50. a speed measuring structure; 51. an incremental encoder; 52. a transition disk; 53. an encoder connecting frame; 54. a connecting plate; 55. a circular ring-shaped plate; 56. an outer cover plate; 60. an angle measuring structure; 61. an absolute value encoder; 62. a coupling; 63. an encoder support; 64. fixing the cover plate; 65. a coder fixing block; 70. a slider adjustment structure; 71. connecting blocks; 72. a guide block; 73. a slider; 74. a guide pin shaft; 75. jacking the bolt; 76. tightening and loosening the bolts; 80. a double-oil cylinder structure; 81. an oil cylinder; 82. connecting an oil pipe; 83. the hydraulic fluid port connects.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like, indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the designated device or structure must have a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The invention relates to a multifunctional forklift which is adjusted from the following four aspects on the basis of the existing forklift structure: (1) a speed measuring structure and an angle measuring mechanism are added; (2) the distance adjusting mode between the structure frames is improved according to the relative movement structure frames in the forklift, such as the space between an inner door frame and a fork frame, the space between the door frames and a frame and the space between the inner door frame and an outer door frame, and the traditional side roller and gasket mode is improved into the sliding block adjusting mode in the invention; (3) the structure of the oil cylinder of the existing forward moving frame is improved into a double-oil cylinder structure; (4) the steering structure of the existing front wheel is improved so as to be convenient to mount and dismount. The specific contents are as follows:

as shown in fig. 1, the utility model relates to a multi-purpose forklift comprises a frame 10, a mast 20, a front wheel 30, a steering structure 40, a speed measuring structure 50, an angle measuring structure 60, a slide block adjusting structure 70 and a double-cylinder structure 80. The front wheel rotates through a driving motor 31 connected to one side of a rim 32, the driving motor is mounted on the frame 10 through the steering structure 40, the gantry includes a forward moving frame 21, and the steering structure includes a slewing bearing 41 and a steering bracket 42, wherein the steering bracket is disposed above the front wheel.

The following description is directed to the four aspects described above:

the first aspect is improved: the speed measuring structure and the angle measuring structure both comprise a measuring device and a mounting part connected with the measuring device, and this aspect is described with reference to fig. 2-4 and 8.

As shown in fig. 2 and 3, the measurer of the speed measuring structure is an incremental encoder 51, as shown in fig. 8, which is connected to the other side of the rim and can rotate synchronously with the front wheel to measure the speed; the mounting part of the speed measuring structure is fixedly connected with the steering support, so that the speed measuring structure can be synchronously steered with the steering support and the front wheel.

As shown in fig. 2 and 3, the mounting member of the speed measuring structure includes a transition disc 52, an encoder connecting frame 53 and a connecting plate 54, wherein the transition disc is fixedly connected on the other side of the rim, the incremental encoder is fixedly connected on the encoder connecting frame, and the rotor of the incremental encoder penetrates through the encoder connecting frame to be connected with the transition disc, the encoder connecting frame extends outwards from the rim to the outside of the front wheel and is connected with the connecting plate, the connecting plate is vertically arranged and is connected with the steering support, whereby the encoder yoke and the link plate are fixed by a steering bracket, the incremental encoder is fixed by the encoder yoke, the rotor of the incremental encoder can be synchronously rotated with the front wheel to realize measurement, and the incremental encoder is synchronously rotated with the front wheel through the encoding connector and the connecting plate when the front wheel is rotated.

In order to avoid the damage and the convenient assembly of the increment encoder installed by sundries, the encoder connecting frame preferably adopts a cylinder structure with one open end and the other end of the encoder connecting frame is provided with a through hole for the rotor of the increment encoder to penetrate out, the cylinder structure faces the outer side of the front wheel and has the same opening direction with the axis direction of the front wheel, in order to facilitate the connection of the encoder connecting frame and the connecting plate, a circular plate 45 extends out of the outer edge close to one open end of the cylinder structure, a limit hole for connecting the encoder connecting frame is arranged on the connecting plate, the limit hole is divided into two parts with reduced diameters from outside to inside, the part with smaller diameter is consistent with the outer diameter of the cylinder structure, the part with larger diameter is consistent with the outer diameter of the circular plate, so that the cylinder structure is clamped in the limit hole and the circular plate is connected in the limit hole through a fastener, this enables the mounting of the cylinder structure on the connection plate.

Meanwhile, the connecting plate is connected with an outer cover plate 56 for sealing the opening of the encoder connecting frame, and the diameter of the outer cover plate can be consistent with that of the part with the larger diameter of the limiting hole, so that the outer cover plate is arranged in the limiting hole; or the diameter of the outer cover plate is larger than the maximum diameter of the limiting hole, and the outer cover plate is directly covered on the limiting hole. The two modes can seal the opening of the encoder connecting frame, and the protection of the incremental encoder is achieved.

Assembling a speed measuring structure: the transition disc is fixedly connected to the rim, the incremental encoder is installed in the encoder connecting frame, the encoder connecting frame is embedded in the limiting hole of the connecting plate and is fixed, the rotor of the incremental encoder is connected to the transition disc, the outer cover plate is fixed to the limiting hole, and finally the connecting plate is fixedly connected with the steering support to complete assembly.

Wherein, as shown in fig. 4 and 5, the angle measurement structure set up in slewing bearing's centre bore, the caliber of angle measurement structure is absolute value encoder 61, the absolute value encoder is connected turn to on the support, and can with turn to the synchronous rotation of support, the installed part rigid coupling of angle measurement structure is in on the fork truck frame leg.

As shown in fig. 4 and 5, the mounting member of the angle measuring structure includes a coupler 62, an encoder bracket 63 and a fixing cover plate 64, a groove is processed on the steering bracket, the coupler is mounted on the groove, the absolute value encoder is connected on the encoder bracket, and the rotor of the absolute value encoder passes through the encoder bracket and is connected on the coupler, a mounting hole is arranged on the forklift frame leg corresponding to the center hole of the slewing bearing, the encoder bracket is mounted in the mounting hole, so that the body part of the absolute value encoder is fixed with the forklift frame leg by the encoder bracket, and the rotor part of the absolute value encoder moves synchronously with the steering bracket through the coupler, thereby achieving the purpose of measuring the angle. In the above, the absolute value encoder is fixed in the encoder bracket by at least two encoder fixing blocks 65.

In order to avoid damage to the absolute value encoder caused by sundries and facilitate assembly, the encoder bracket preferably adopts a cylindrical structure with an opening at one end, the opening is vertically upward, an annular plate extends on the outer edge of one end of the cylindrical structure, which is provided with the opening, along the circumferential direction of the cylindrical structure, the mounting hole is divided into three parts with diameters decreasing in sequence from top to bottom, the part close to the slewing bearing is consistent with the diameter of the cylindrical structure, the middle part is consistent with the outer diameter of the annular plate, and the upper part is consistent with the outer diameter of the fixed cover plate, so that the cylindrical structure can be directly sleeved in the mounting hole, and the annular plate is fixed in the mounting hole through a fastener; and finally, embedding a fixed cover plate on the largest diameter part in the mounting hole, and arranging the upper end surface of the fixed cover plate and the upper end surfaces of the forklift frame legs on the same horizontal plane, so that influence on the use of the forklift frame legs is avoided.

Assembling an angle measuring structure: according to slewing bearing centre bore position, process the frame leg, processing to the steering bracket, install the shaft coupling on the steering bracket, install the absolute value encoder on the encoder support, again with the rotor connection of absolute value encoder on the shaft coupling, at this moment, the encoder support scarf joint in on the mounting hole, connect the ring board through the fastener, at last with fixed apron scarf joint on the mounting hole to this accomplishes the installation of angle measurement structure.

The second aspect is improved: this aspect is illustrated in connection with fig. 1 and 6:

as shown in fig. 6, the slider adjusting structure 70 is used for adjusting the distance between two structure frames that move relative to each other in the forklift, and is provided between the two structure frames, and the adjustment between the inner mast and the outer mast will be described below as an example.

The slider is adjusted the structure and is located between outer portal 23 and the interior portal 22, including connecting block 71, guide block 72 and the slider 73 that sets up side by side in proper order, wherein the slider is preferred to be adopted the metal copper material, the slider pass through fastening bolt with the guide block rigid coupling is in the same place.

The guide block is provided with two guide holes, and two guide pin shafts 74 corresponding to the two guide holes are fixedly connected to the side surface of the connecting block facing the guide block, so that the guide block can move relative to the connecting block, and further, a jacking bolt 75 for jacking the guide block to enable the guide block to move along the axis direction of the guide pin shaft is connected to the connecting block, so that the guide block is enabled to move through the contact between the jacking bolt and the guide block.

The connecting block is fixedly connected to the outer gantry or the inner gantry, the corresponding sliding block is tightly attached to the inner gantry or the outer gantry, as shown in fig. 6, the connecting block is fixedly connected to the outer gantry, the sliding block is tightly attached to the inner gantry, four small screw holes are formed in the outer gantry, and the connecting block is fixedly connected to the outer gantry through four bolts in the four small screw holes; simultaneously be equipped with two regulation holes on the outer portal, the jacking bolt is equipped with two, two jacking bolts are corresponding with the regulation hole, pass the regulation hole and screw up and loosen the jacking bolt to this regulation that realizes the jacking bolt, for the jacking of realizing the jacking bolt, the length of jacking bolt need be greater than the width of connecting block.

The guide block can fall off from the guide pin shaft or can move on the guide pin shaft when the adjustment is not needed, and accordingly a tightness screw hole is formed in the outer door frame, and a tightness bolt 76 which can penetrate through the connecting block and is connected to the guide block is connected to the tightness screw hole.

The adjusting process comprises the following steps:

the installation is carried out according to the structure, when the adjustment is needed, the elastic bolt is loosened firstly, the gap between the guide block and the connecting block is adjusted through the adjustment of the jacking bolt, so that the sliding block on the guide block moves, the distance between the outer gantry and the inner gantry is adjusted, and the elastic bolt is fastened again after the adjustment is finished.

In a third aspect of the improvement: this aspect is described below in conjunction with fig. 1 and 7.

As shown in fig. 7, the dual-cylinder structure includes two cylinders 81, two connecting oil pipes 82 and two oil port joints 83, and in order to achieve synchronous extension and contraction of the piston rods in the two cylinders, the structural relationship among the two cylinders, the two connecting oil pipes and the two oil port joints needs to be optimally designed, specifically as follows:

wherein, two hydro-cylinders interconnect and mutual parallel arrangement, two hydro-cylinders adopt the same size, and both ends align to the welding mode links together two hydro-cylinders, two flexible ends of two hydro-cylinders respectively with frame 10 of fork truck and the portal 20 looks rigid coupling of fork truck, and the flexible opposite direction of two flexible ends.

Wherein, two connect oil pipe all follow the length direction of two hydro-cylinders sets up, connect oil pipe's both ends respectively near in the both ends of two hydro-cylinders, just two connect oil pipe along its length direction with the end connect respectively on two hydro-cylinders, every both ends of connecting oil pipe dock respectively simultaneously on two hydro-cylinders, couple together two hydro-cylinders through two connection oil pipe from this to form two oil circuits.

Wherein, according to the two oil paths, the two oil port connectors are installed on two ends of one of the oil cylinders or on the same end of the two oil cylinders, and in fig. 7, the two oil port connectors are respectively installed on two ends of one of the oil cylinders; taking the two oil cylinders in fig. 7 as an example, the two oil cylinders are divided into an upper oil cylinder and a lower oil cylinder, the two oil port joints respectively correspond to an extending oil port joint and a contracting oil port joint of the piston rod, when pressure oil enters from the extending oil port joint, the pressure oil enters the upper oil cylinder to drive the piston rod of the upper oil cylinder, at the moment, the pressure oil enters the lower oil cylinder along the connecting oil pipe while entering the upper oil cylinder, and the piston rod of the lower oil cylinder is synchronously driven, and due to the structural design of the connecting oil pipe, the extending directions of the piston rods of the upper oil cylinder and the lower oil cylinder are opposite, so that the movement with; similarly, when the piston rods of the upper oil cylinder and the lower oil cylinder are in an extending state and need to be contracted, pressure oil enters from the contraction oil port connector, the piston rods are contracted by the pressure oil entering the upper oil cylinder, and meanwhile the pressure oil entering the upper oil cylinder enters the lower oil cylinder along the connecting oil pipe to promote the piston rods of the lower oil cylinder to be contracted.

As shown in fig. 7, the top end of one of the two piston rods of the two cylinders is provided with a thread, and the two piston rods can be fixedly connected with the forklift frame in a thread manner; meanwhile, the top end of the other piston rod is provided with a round hole, a connecting frame can be installed on the forward moving frame 21 of the forklift gantry, and the piston rod can be connected to the connecting frame in a pin shaft mode, so that the piston rod is fixedly connected with the forward moving frame.

The fourth aspect is improved: this aspect is described below in conjunction with fig. 1 and 8.

The steering structure is used for steering the front wheels of the forklift, the number of the front wheels is two, the steering structure is correspondingly provided with two steering structures, the steering structures are driven by the steering oil cylinders to steer, and the two oil inlet and outlet modes of the steering structures are controlled through an oil circuit system, so that the purpose of synchronously steering the two front wheels is achieved.

As shown in fig. 8, the steering structure includes a steering bracket 42, a pivoting support 41, a steering cylinder 43, a fixing bracket 44, a connecting pin 45, and a front pin 46, wherein the steering cylinder is a long cylinder with pin holes at both ends. Wherein, it connects to turn to the structure on fork truck's the frame leg, the frame leg includes a horizontal board 11, the gyration is supported and is transversely located the top and the rigid coupling of front wheel are in on the lower terminal surface of horizontal board, turn to the support and locate slewing bearing below and rigid coupling are in slewing bearing is last, turn to the support include with slewing bearing is connected the crossbearer with locate one side of front wheel and with the perpendicular frame that driving motor is connected, erect the frame rigid coupling and be in on the crossbearer to this accomplishes being connected between driving motor, steering support and the frame leg frame.

Wherein, the fixed bolster includes that upper and lower setting and be on a parallel with two transverse connection board 441 that are parallel to each other of transverse plate 11, two transverse connection board rigid couplings are in on the side of fork truck frame leg, steering cylinder locates the fixed bolster with turn to between the support, just steering cylinder's flexible end passes through preceding round pin axle 46 is connected the one corner of crossbearer is served, connecting pin axle connects with vertical mode on two transverse connection boards, steering cylinder's stiff end is located between two transverse connection boards and is installed connecting pin epaxially, so, accomplishes steering cylinder, fixed bolster and steering support's connection.

Further, the horizontal board of fork truck frame leg is processed there is a mounting hole corresponding to the position department of fixed bolster, connecting pin hub connection just passes the horizontal connecting plate that is in the upper strata on the mounting hole with vertical mode, connecting pin hub's lower extreme is connected on the horizontal connecting plate of lower floor, promptly all be equipped with a connecting hole on two horizontal connecting plates, the connecting hole with the mounting hole is corresponding, from this when the installation, will turn to the pinhole of hydro-cylinder stiff end and aim at the connecting hole, connecting pin hub passes mounting hole and connecting hole from frame leg top, at last on the frame leg with connecting pin hub connection at connecting pin hub can, so, can realize simple to operate, dismantle simple purpose.

In the invention, in order to strengthen the connection strength between the transverse frame and the vertical frame, the vertical frame is connected with a plurality of reinforcing plates which are arranged below the transverse frame and fixedly connected with the transverse frame, and the reinforcing plates are preferably connected with the transverse frame in an inclined manner so as to avoid contacting with the front wheel; secondly, for strengthening the joint strength of fixed bolster and frame leg the rigid coupling has one on the side of two transverse connection board with the gusset plate of fork truck frame leg looks rigid coupling, the gusset plate with the transverse plate and the side homogeneous phase of fork truck frame leg are connected.

The steering principle is as follows: a piston rod of the steering oil cylinder is connected with a steering support 42 through a front pin shaft 46, a front wheel is arranged on the steering support, the steering support is connected to a frame leg through a slewing bearing 41, and the steering support can freely rotate with the frame leg through the slewing bearing; the cylinder barrel of the steering oil cylinder is connected with a fixed support 44 through a connecting pin shaft 45, and the fixed support is welded on a frame leg; when the actual front wheel needs to rotate, the piston rod is extended out by supplying pressure oil to the steering oil cylinder to push the steering support to rotate, so that the front wheel is driven to rotate, and at the moment, the steering oil cylinder swings between the two transverse connecting plates through the connecting pin shaft.

In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the above specific embodiments, which are only used for describing the present invention, and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a multi-function forklift, includes frame (10), portal (20) and front wheel (30), the front wheel rotates through driving motor (31) that rim (32) one side is connected, just driving motor installs through steering structure (40) on the frame, the portal includes antedisplacement frame (21), steering structure includes slewing bearing (41) and steering support (42), its characterized in that, steering support locates the top of front wheel, multi-function forklift still includes:

the speed measuring structure (50) is connected to the other side of the rim, is connected with the steering support and is used for measuring speed;

the angle measuring structure (60) is arranged in a central hole of the slewing bearing, is connected with the frame and is used for measuring an angle;

the sliding block adjusting structure (70) is used for adjusting the distance between two structure frames which move relatively in the forklift;

and one end of the double-oil-cylinder structure (80) is fixedly connected to the frame, and the other end of the double-oil-cylinder structure is connected with the forward moving frame and used for improving the moving stroke of the forward moving frame.

2. The utility forklift of claim 1,

the speed measuring structure and the angle measuring structure respectively comprise a measurer and an installation part connected with the measurer;

3. The utility forklift of claim 2, wherein the measuring device of the speed measuring structure is an incremental encoder (51), and the mounting member comprises a transition disc (52), an encoder connecting frame (53) and a connecting plate (54), the transition disc is fixedly connected to the rim, the incremental encoder is fixedly connected to the encoder connecting frame, the rotor of the incremental encoder penetrates through the encoder connecting frame to be connected with the transition disc, the encoder connecting frame extends out of the front wheel and is connected with the connecting plate, and the connecting plate is vertically arranged and is connected with the steering support.

4. The multi-function forklift of claim 3, wherein the encoder connecting frame is a cylindrical structure with an opening at one end, the other end of the encoder connecting frame is provided with a through hole for a rotor of the incremental encoder to penetrate through, a circular plate (55) extends out of the outer edge of one end of the cylindrical structure close to the opening, a limiting hole for connecting the encoder connecting frame is formed in the connecting plate, and the circular plate is fixedly connected in the limiting hole; and the limiting hole is connected with an outer cover plate for covering the opening of the encoder connecting frame.

5. The utility model discloses a utility forklift truck of claim 2, characterized in that, the caliber of angle measurement structure is absolute value encoder (61), and the installed part includes shaft coupling (62), encoder support (63) and fixed apron (64), the shaft coupling rigid coupling is in turn to the support, absolute value encoder connects on the encoder support, and its rotor passes the encoder leg and connects on the shaft coupling, be equipped with a mounting hole on the frame leg corresponding to slewing bearing's centre bore, encoder leg joint is in the mounting hole, fixed apron is connected in the mounting hole, and the lid closes on the encoder support.

6. The utility model discloses a multi-functional fork truck of claim 1, characterized in that, slider regulation structure locates between two structure framves, and includes connecting block (71), guide block (72) and slider (73) that set gradually side by side, the slider with guide block looks rigid coupling, be equipped with guiding hole (721) on the guide block, the connecting block orientation on the side of guide block rigid coupling have with guiding pin (74) that the guiding hole corresponds, be connected with on the connecting block and carry out the top bolt (75) that advances to the guide block messenger's guide block and remove along guiding pin's axis direction, the guide block with connect through a elasticity bolt (76) between the connecting block, the connecting block rigid coupling is on one of them structure frame, and corresponding slider hugs closely in another structure frame.

7. The utility model discloses a multi-functional fork truck of claim 1, characterized in that, two hydro-cylinder structures include interconnect and parallel arrangement's two hydro-cylinders (81) and follow two connection oil pipe (82) that the length direction of two hydro-cylinders goes on setting up, two flexible ends of two hydro-cylinders respectively with frame (10) with it is the rigid coupling mutually that the frame (21) that move forward, and the flexible opposite direction of two flexible ends, connect oil pipe's both ends respectively near in the both ends of hydro-cylinder, two connection oil pipe are connected respectively along its length direction's same end on two hydro-cylinders, and every both ends of connecting oil pipe dock respectively on two hydro-cylinders.

8. Multifunctional forklift according to claim 7, characterized in that two oil ports (83) are provided on the two cylinders, which are mounted on both ends of one of the cylinders or on the same end of the two cylinders.

9. The utility model discloses a multi-purpose forklift truck of claim 1, characterized in that, the structure that turns to still includes steering cylinder (43), fixed bolster (44) and connecting pin (45), the fixed bolster includes two transverse connection board (441) that set up from top to bottom and be parallel to transverse plate (11) of the frame leg of frame, two transverse connection board rigid couplings are in on the frame leg, the flexible end of steering cylinder is connected through preceding round pin axle (46) on the steering support, a mounting hole has been processed on transverse plate (11), the connecting pin hub connection be in on the mounting hole and connect in vertical mode on two transverse connection board, the stiff end of steering cylinder is located between two transverse connection board and is connected on the connecting pin axle.