CN113060680B - Lightweight forklift mast device - Google Patents

Abstract

The application relates to a lightweight forklift mast device, which relates to the technical field of forklifts and comprises a mast body and a pallet fork arranged on the mast body in a sliding manner, wherein a driving device connected with the pallet fork is arranged on the mast body and comprises an oil hydraulic cylinder, a driving plate, a driving wheel and a driving belt; the oil hydraulic cylinder is arranged on the door frame body, the driving plate is arranged on a piston rod of the oil hydraulic cylinder, the driving wheel is rotatably arranged on the driving plate, and two ends of the driving belt are detachably connected with the door frame body and the pallet fork respectively through connecting mechanisms and bypass the driving wheel. This application is through when the installation portal, installs oil hydraulic cylinder and drive plate earlier, is connected with portal body and fork respectively through coupling assembling after bypassing the drive wheel with the driving band after, and during the maintenance simultaneously, it can change the driving band to open coupling assembling to this convenience when having improved the installation and having maintained the portal.

Description

Lightweight fork truck portal device

Technical Field

The application relates to the technical field of fork truck, especially, relate to a lightweight fork truck portal device.

Background

The forklift is used as an industrial transport vehicle, a working device of the forklift mainly comprises an inner gantry and an outer gantry, and the gantries generate a large overturning moment by taking a front axle as a centroid in the process of forking goods and lifting operation, so the forklift gantry is the most important stressed member in the process of working of the forklift. In some light industry or small business portal application scenarios, the load demand on the portal is generally not more than 5 tons, and the portal volume is desirably as small as possible to reduce space occupation and acquisition cost.

As shown in fig. 1, the existing forklift gantry includes a gantry body 1 and a fork 7 slidably disposed on the gantry body 1, the gantry body 1 is provided with a lifting assembly for driving the fork 7, the driving assembly includes a lead screw 101, a first bevel gear 102, a driving motor 103 and a second bevel gear 104, the lead screw 101 is rotatably disposed on the gantry body 1 and is in threaded connection with the fork 7, the first bevel gear 102 is disposed on the lead screw 101, the driving motor 103 is disposed on the gantry body 1, and the second bevel gear 104 is disposed on an output shaft of the driving motor 103 and is engaged with the first bevel gear 102; the driving motor 103 is started to drive the second bevel gear 104 to rotate, the second bevel gear 104 rotates to drive the first bevel gear 102 and the screw rod 101 to rotate, and the screw rod 101 rotates to drive the pallet forks 7 to move.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: in application scenes of some light industries and small enterprises, the load of the portal is not high generally, and the requirement on the portal mainly lies in convenience in mounting and using the portal, but the lead screw is required to be rotatably mounted on the portal body when being mounted, the lead screw is required to be in threaded connection with the pallet fork, and finally a bevel gear and a motor are mounted, so that the process of mounting the portal is complex, and parts on the portal body are troublesome to replace when needing to be maintained, so that the convenience in mounting and maintaining the portal is reduced.

Disclosure of Invention

Convenience when installing and maintenance portal in order to improve, this application provides a lightweight fork truck portal device.

The application provides a pair of lightweight fork truck portal device adopts following technical scheme:

a lightweight forklift portal frame device comprises a portal frame body and a fork arranged on the portal frame body in a sliding mode, wherein a driving device connected with the fork is arranged on the portal frame body, and the driving device comprises an oil hydraulic cylinder, a driving plate, a driving wheel and a driving belt;

the oil hydraulic cylinder is arranged on the door frame body, the drive plate is arranged on a piston rod of the oil hydraulic cylinder, the drive wheel is rotatably arranged on the drive plate, and two ends of the drive belt are detachably connected with the door frame body and the fork respectively through connecting mechanisms and bypass the drive wheel.

By adopting the technical scheme, the oil hydraulic cylinder is started to drive the driving plate to move, the driving plate drives the driving wheel to move, the driving wheel drives the driving belt to move, and the driving belt drives the pallet fork to move;

therefore, when the door frame is installed, the oil hydraulic cylinder and the driving plate are installed firstly, then the driving belt is connected with the door frame body and the fork through the connecting assembly after bypassing the driving wheel, and meanwhile, when the door frame is maintained, the driving belt can be replaced by opening the connecting assembly, so that the convenience in installation and maintenance of the door frame is improved.

Optionally, the connecting mechanism includes connecting screw, two coupling nuts, connecting block, clamping screw and fixation nut, connecting screw slides and wears to establish on the portal body, two coupling nut threaded connection just supports tightly on the wall of the back of the body both sides of portal body on connecting screw, connecting block fixed mounting is on the both ends of driving band, clamping screw passes connecting screw head and connecting block, fixation nut threaded connection just supports tightly on connecting screw on the fixation screw.

By adopting the technical scheme, the fixing nut is screwed to be separated from the fixing screw rod, and then the driving belt can be detached by taking down the fixing screw rod; the fixing screw penetrates through the connecting screw and the connecting block, then the fixing nut is screwed to abut against the connecting screw, then one of the connecting nuts is connected onto the connecting screw in a threaded manner, then the connecting screw penetrates through the door frame body, so that the connecting nut abuts against the door frame body, then the other connecting nut is connected onto the connecting screw in a threaded manner, so that the connecting nut abuts against the door frame body, and thus the driving belt is fixedly connected with the pallet fork and the door frame body respectively, the mounting and dismounting of the driving belt are realized, and the convenience in mounting the forklift door frame is improved;

simultaneously, the connecting nut is screwed to adjust the position of the connecting screw rod, so that the tightness of the driving belt is adjusted, and the stability of the pallet fork during movement is improved.

Optionally, the portal body includes outer support body and interior support body, outer support body and fork truck body coupling, the setting that slides on the interior support body is on outer support body, the setting that slides on the interior support body is provided with the removal frame that is connected with the fork and is used for fixing a position the goods, the drive plate sets up on the interior support body, outer support body includes two guide rails and the connecting plate that links together two guide rails.

By adopting the technical scheme, goods are placed on the goods fork and abut against the moving frame for positioning, the oil hydraulic cylinder is started to drive the driving plate to move, the driving plate moves to drive the inner frame body to move, and meanwhile, the moving frame is driven to move through driving, so that the inner frame body and the moving frame simultaneously move to drive the goods to move, the moving speed of the goods is accelerated, and the efficiency of moving the goods by using the forklift gantry is improved;

meanwhile, the outer frame body comprises two guide rails and a connecting plate, so that the weight of the outer frame body is reduced, the forklift mast tends to be light, and the convenience in moving and mounting the forklift mast is improved.

Optionally, one end of the fork in the length direction is connected with the movable frame, a first cavity, a second cavity and a third cavity which are communicated with each other are arranged on the lower surface of the fork at intervals along the length direction of the fork, the widths of the first cavity, the second cavity and the third cavity are gradually reduced, and the third cavity is communicated with one end, close to the movable frame, of the fork.

By adopting the technical scheme, the weight of the fork is reduced by the first cavity, the second cavity and the third cavity, and the pressure of the goods on one side close to the moving frame to the fork is generally higher during transportation, so that the widths of the first cavity, the second cavity and the third cavity are gradually reduced, and the third cavity is communicated with one end, close to the moving frame, of the fork, so that the bearing strength of the fork is improved, the weight and the strength of the fork are combined, and the fork has better bearing strength while the weight of the fork is reduced; therefore, the convenience when the forklift mast is used is improved.

Optionally, rotate on the outer frame body top and be provided with the first gyro wheel of conflict on the inner frame body, it is provided with second gyro wheel and the third gyro wheel of conflict on the outer frame body to rotate on the inner frame body, third gyro wheel and first gyro wheel direction of rotation axis are parallel and perpendicular with second gyro wheel direction of rotation, second gyro wheel and third gyro wheel conflict on the adjacent both sides wall of outer frame body.

By adopting the technical scheme, the first idler wheels are abutted against the inner frame body, and the second idler wheels and the third idler wheels are abutted against two adjacent side walls of the outer frame body, so that the first idler wheels, the second idler wheels and the third idler wheels reduce the friction force between the outer frame body and the inner frame body, and the probability of clamping of the inner frame body when sliding on the outer frame body is also reduced; the internal support body position is spacing simultaneously, consequently the loss of the energy when having reduced the internal support body and the wearing and tearing of internal support body, stability when also having improved the internal support body and removing.

Optionally, the movable frame is provided with an insertion hole, the fork is provided with an insertion block which is in insertion fit with the insertion hole, the insertion block is provided with a mounting angle, and a welding area which is convenient to weld is formed between the mounting angle and the side wall of the insertion hole.

Through adopting above-mentioned technical scheme, on pegging graft the spliced eye with the grafting piece on the fork, then weld at the weld zone, consequently the weld zone has improved the convenience when welding, has also improved the welding effect simultaneously, has consequently improved the fastness after fork and removal frame are connected.

Optionally, be provided with two stop devices that carry out spacing to the goods on removing the frame, stop device includes limiting plate, torsional spring, the limiting plate passes through the axis of rotation and rotates the setting on removing the frame, the torsional spring both ends respectively with remove frame and limiting plate connection and be used for maintaining the limiting plate and support to press on the goods.

Goods are placed on the pallet, and when the pallet is transported by the pallet fork, the goods easily fall off the pallet, so that the goods are damaged;

through adopting above-mentioned technical scheme, two limiting plates support under the effect of torsional spring and press on the goods to this fixes a position the goods, thereby has reduced the goods and has dropped and the probability of damage from the pallet.

Optionally, the interval is provided with a plurality of locating holes on removing the frame, the axis of rotation bottom is provided with the fixed disk of pegging graft complex with the locating hole, the limiting plate rotates the cover and establishes in the axis of rotation, be provided with the support bearing who conflicts with the limiting plate on the fixed disk, be provided with the positioning disk on the axis of rotation top and be provided with and pass support bearing and peg graft complex joint post with the fixed disk, the both ends and the positioning disk and the limiting plate grafting cooperation of torsional spring.

The goods are different in size, so that the limiting plate cannot be suitable for positioning the goods of different sizes, the application range of the limiting plate is reduced, and the limiting effect of the limiting plate on the goods is reduced; meanwhile, the torsion force of the torsion spring is gradually reduced after the torsion spring is used for a period of time, so that the limiting effect of the limiting plate on goods is reduced, and the risk that the goods fall off from the pallet and are damaged is increased;

by adopting the technical scheme, the fixed disc is pulled to be separated from the inserting grooves, and then the fixed disc is inserted and matched with the inserting grooves at different positions, so that the goods with different sizes are limited, the application range of the limiting plate is improved, and the limiting effect of the limiting plate on the goods is improved; the pulling positioning disk makes joint post and fixed disk break away from, then can dismantle the torsional spring from limiting plate and positioning disk and get off and change, changes the completion back, with the joint post grafting install on the fixed disk to this realizes the change to the torsional spring, has improved the spacing effect of limiting plate to the goods.

Optionally, be provided with the thrust unit who promotes the limiting plate on the fixed disk, thrust unit includes locating piece, positioning spring, ejector pad, the locating piece slides and sets up on the fixed disk, the positioning spring both ends are connected with ejector pad and fixed disk respectively, the locating piece pushes the limiting plate under the positioning spring effect and keeps away from the goods, the ejector pad slides and sets up on the fixed disk and contact with locating piece and goods, the ejector pad receives and promotes the locating piece after the goods extrusion and keeps away from the limiting plate, the limiting plate carries on spacingly to the goods under the torsional spring effect, and behind the goods was kept away from to the ejector pad, positioning spring promotes the locating piece and promotes the limiting plate and keeps away from the goods.

The limiting plates are abutted against the goods, so when the goods are taken down, the limiting plates are easy to damage the goods, and the goods are easy to fall off from the pallet under the action of the limiting plates, so that the risk of damage caused by falling of the goods is increased;

by adopting the technical scheme, the goods are far away from the moving frame, so that the goods are far away from the push block, and the positioning block pushes the limiting plate to be far away from the goods under the action of the positioning spring, so that the damage of the limiting plate to the goods is reduced, and the probability that the goods fall off from the pallet and are damaged is also reduced; and the goods extrudees the ejector pad, and the ejector pad promotes the locating piece and keeps away from the limiting plate, and the limiting plate supports to press under the torsional spring effect and fixes a position on the goods.

Optionally, one end of the fork, which is far away from the moving frame, is provided with a guide angle, which is convenient for the fork to extend to the lower part of the pallet for loading the goods, and the fork is in an inclined state, and the height of the fork, which is close to one end of the moving frame, is lower than the height of the fork, which is far away from one end of the moving frame.

By adopting the technical scheme, the guide angle guides the pallet fork when the pallet fork extends to the lower part of the pallet, so that the convenience in transporting the goods by using the pallet fork is improved; meanwhile, the inclined state of the pallet fork reduces the probability that the pallet falls off the pallet fork, and the stability of the pallet fork in the process of transporting goods is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the portal frame is installed, the oil hydraulic cylinder and the driving plate are installed firstly, then the driving belt is connected with the portal frame body and the pallet fork through the connecting assembly after bypassing the driving wheel, and meanwhile, when the portal frame is maintained, the driving belt can be replaced by opening the connecting assembly, so that the convenience in installation and maintenance of the portal frame is improved;

2. the weight of the fork is reduced through the first cavity, the second cavity and the third cavity, and meanwhile, the widths of the first cavity, the second cavity and the third cavity are gradually reduced, so that the fork has better bearing strength while the weight of the fork is reduced, and the convenience in using the forklift portal is improved;

3. the goods are pressed against the goods through the two limiting plates under the action of the torsion spring so as to be positioned, and therefore the probability that the goods fall off from the pallet and are damaged is reduced;

4. the goods are far away from the push block, and the positioning block pushes the limiting plate to be far away from the goods under the action of the positioning spring, so that the damage of the limiting plate to the goods is reduced, and the probability that the goods fall off the pallet to be bad is also reduced; and the goods extrusion drives the locating piece and keeps away from the limiting plate, therefore the limiting plate supports under the torsional spring and presses and fix a position on the goods.

Drawings

FIG. 1 is a schematic perspective view of a prior art construction;

FIG. 2 is a perspective view of the present application;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is a partial schematic structural view of the present application;

FIG. 5 is a schematic view of the structure of the forks and skid plate of the present application, with one of the forks exploded;

FIG. 6 is a schematic view of the second and third rollers of the present application;

FIG. 7 is a schematic view of the drive mechanism and linkage mechanism of the present application;

FIG. 8 is a schematic view of the stop and the pusher of the present application;

fig. 9 is an exploded view of the spacing device and the pushing device in the present application.

Reference numerals are as follows: 1. a door frame body; 11. a rotating shaft; 12. a first roller; 13. a rotating rod; 14. a rotating groove; 15. rotating the rod; 16. a second roller; 17. a third roller; 18. a fixing rod; 2. an outer frame body; 21. a guide rail; 211. a blocking plate; 22. a connecting plate; 23. a fixing plate; 3. an inner frame body; 31. mounting a rail; 311. a vertical baffle; 32. mounting a plate; 33. a movable frame; 34. a slide plate; 341. inserting holes; 35. moving the plate; 36. positioning a rod; 37. positioning holes; 38. fixing the disc; 381. mounting grooves; 382. inserting grooves; 383. a support bearing; 384. inserting the column; 385. clamping the column; 386. a rotating shaft; 387. a rotating ring; 388. a connecting rod; 389. positioning a plate; 4. a locking assembly; 41. locking the screw rod; 42. a locking nut; 43. a locking groove; 5. a drive device; 51. an oil hydraulic cylinder; 52. a drive plate; 521. a first drive shaft; 522. a second drive shaft; 523. a limiting wheel; 53. a drive wheel; 54. a drive belt; 6. a connecting mechanism; 61. connecting a screw rod; 62. a connecting nut; 63. connecting blocks; 64. fixing the screw rod; 65. fixing a nut; 66. inserting the groove; 7. a pallet fork; 71. an insertion block; 72. mounting an angle; 73. a welding zone; 74. a guide angle; 75. round corners; 76. a first cavity; 77. a second cavity; 78. a third cavity; 8. a limiting device; 81. a limiting plate; 82. a torsion spring; 9. a pushing device; 91. positioning a block; 911. a lifting groove; 912. a sliding hole; 913. a push angle; 914. a guide block; 915. a guide surface; 92. a positioning spring; 93. pushing a block; 94. a pallet; 95. goods; 101. a screw rod; 102. a first bevel gear; 103. a drive motor; 104. a second bevel gear.

Detailed Description

The present application is described in further detail below with reference to figures 2-9.

The embodiment of the application discloses lightweight fork truck portal device.

Referring to fig. 2, the lightweight forklift mast device comprises a mast body 1 and a fork 7 slidably mounted on the mast body 1, wherein a driving device 5 connected with the fork 7 is arranged on the mast body 1.

Referring to fig. 2 and 3, the door frame body 1 includes an outer frame body 2 and an inner frame body 3 located inside the outer frame body 2, and the outer frame body 2 is connected to a forklift body; the outer frame body 2 comprises two guide rails 21 in a vertical state and a connecting plate 22; the projection of the guide rail 21 in the vertical direction is in a U shape, and two opposite side walls of the guide rail 21 are integrally provided with a stop plate 211 at the opening; the connecting plate 22 is C-shaped, the two ends of the connecting plate 22 are fixedly connected with the two opposite side walls of the two guide rails 21, the connecting plate 22 is located on the top ends of the guide rails 21, a fixing plate 23 is fixedly mounted on the two guide rails 21 and below the connecting plate 22, and the fixing plate 23 and the connecting plate 22 are identical in shape.

Referring to fig. 3 and 4, the inner frame body 3 includes two mounting rails 31 and a mounting plate 32 in a vertical state, the vertical projection of the mounting rails 31 is "u" -shaped, and vertical baffles 311 are integrally disposed on two opposite side walls of the mounting rails 31 and at the opening; the projection of mounting panel 32 on the vertical direction is C shape, and the both ends and two mounting rail 31 lateral walls fixed connection of mounting panel 32, and mounting panel 32 is located and is close to mounting rail 31 bottom one side.

Referring to fig. 2 and 3, the mounting rail 31, the vertical baffle 311, the mounting plate 32, the guide rail 21, the baffle 211, and the connecting plate 22 are each formed by bending a metal plate, which may be steel. Two mounting rails 31 are located between the two guide rails 21.

Referring to fig. 2 and 3, a horizontal fixing rod 18 is fixedly installed on the side wall of the opposite side of the two mounting rails 31 and at the top end of the mounting rail 31, and the length direction of the fixing rod 18 is perpendicular to the side wall of the mounting rail 31 connected with the fixing rod 18; all can dismantle the pivot 11 that is provided with through locking Assembly 4 on the lateral wall of two guide rail 21 relative one sides, and pivot 11 is the horizontality and is located guide rail 21 top, and 11 axes of pivot are perpendicular with 18 length direction of dead lever simultaneously, rotate on 11 pivots and install the first gyro wheel 12 of conflict on two wall of the wall of carrying on the back mutually.

Referring to fig. 2 and 3, the locking assembly 4 is provided in two and is located on both ends of the rotating shaft 11, and the locking assembly 4 includes a locking screw 41 and two locking nuts 42. One end of the locking screw 41 is locked with the rotating shaft 11 through threads, and one end of the locking screw 41, which is far away from the rotating shaft 11, horizontally penetrates out of the guide rail 21 and the connecting plate 22, so that the locking screw 41 is slidably arranged on the guide rail 21 and the connecting plate 22, meanwhile, one end of the locking screw 41, which is far away from the rotating shaft 11, is provided with a locking groove 43, the locking groove 43 is in a regular hexagon shape, and the locking groove 43 is convenient for screwing the locking screw 41 by using an allen wrench; two locking nuts 42 are screwed on the locking screw 41, and the two locking nuts 42 are tightly pressed on two opposite side walls of the guide rail 21 and the connecting plate 22.

Referring to fig. 4 and 5, the moving frame 33 is vertically slidably mounted on the side wall of the opposite side of the two mounting rails 31, the moving frame 33 includes a sliding plate 34 and two moving plates 35, the sliding plate 34 is located on the side of the mounting rails 31 far away from the driving device 5, the two moving plates 35 are fixedly mounted on the side wall of the sliding plate 34 close to the side of the mounting rails 31, and the two moving plates 35 extend between the two mounting rails 31.

Referring to fig. 4 and 6, two horizontal rotating rods 13 are fixedly mounted on two opposite side walls of the two moving plates 35 and the two mounting rails 31, and two rotating rods 13 on the moving plates 35 and the mounting rails 31 are vertically arranged at intervals and are arranged in a one-to-one correspondence manner; the axial direction of the rotating rod 13 is perpendicular to the length direction of the fixed rod 18, a rotating groove 14 is coaxially formed in one end, far away from the moving plate 35, of the rotating rod 13, a horizontal rotating rod 15 is fixedly installed on the rotating groove 14, and the axial line of the rotating rod 15 is perpendicular to the axial line of the rotating rod 13.

Referring to fig. 4 and 6, the second roller 16 is rotatably mounted on the rotation lever 13, the second roller 16 abuts against opposite side walls of the mounting rail 31, the third roller 17 protruding from the second roller 16 and the rotation groove 14 is rotatably mounted on the rotation lever 15, and the third roller 17 abuts against side walls of the mounting rail 31. The second roller 16 and the third roller 17 abut against the adjacent three side walls of the mounting rail 31.

Referring to fig. 4 and 7, the driving device 5 includes a hydraulic cylinder 51, a driving plate 52, a driving wheel 53, and a driving belt 54; the oil hydraulic cylinder 51 is fixedly arranged on the fixing plate 23, and a piston rod of the oil hydraulic cylinder 51 is vertically arranged upwards; the driving plates 52 are fixedly mounted on piston rods of the oil hydraulic cylinders 51, two driving plates 52 are arranged at intervals along the length direction of the fixing rod 18, and the top ends of the driving plates 52 are fixedly mounted on the lower surface of the fixing rod 18.

Referring to fig. 4 and 7, horizontal first and second driving shafts 521 and 522 are fixedly mounted on the side walls of the two driving plates 52 on the opposite sides, and the first driving shaft 521 is located below the second driving shaft 522, while the axes of the first and second driving shafts 521 and 522 are parallel to the length direction of the fixing rod 18.

Referring to fig. 4 and 7, the driving wheel 53 is rotatably mounted on the first driving shaft 521, the second driving shaft 522 is rotatably mounted with a limiting wheel 523, two ends of the driving belt 54 are detachably connected with the fixing plate 23 and the sliding plate 34 through the connecting mechanism 6, the driving belt 54 passes through between the driving wheel 53 and the limiting wheel 523, the limiting wheel 523 presses against the driving belt 54, and the driving wheel 53 is provided with a limiting groove for limiting the driving belt 54.

Referring to fig. 4 and 7, the connecting mechanism 6 includes a connecting screw 61, two connecting nuts 62, a connecting block 63, a fixing screw 64 and a fixing nut 65, the connecting screw 61 vertically slides and penetrates through the fixing plate 23, an insertion groove 66 is formed in the head of the connecting screw 61, and a connecting hole penetrating through the head of the connecting screw 61 and the insertion groove 66 is formed in the head of the connecting screw 61; two connecting nuts 62 are screwed on the connecting screw 61 and tightly abut against the upper and lower surfaces of the fixing plate 23.

Referring to fig. 4 and 7, two connection blocks 63 are provided and fixedly installed on both ends of the driving belt 54, respectively, and the connection blocks 63 are fitted with the insertion grooves 66 in an insertion manner; the fixing screw 64 penetrates through the connecting hole and the connecting block 63 and extends out of the connecting hole, and the fixing nut 65 is in threaded connection with the fixing screw 64 and abuts against the head of the connecting screw 61.

Referring to fig. 4 and 5, the bottom end of the sliding plate 34 extends vertically downward to below the guide rail 21 and the mounting rail 31, and two insertion holes 341 are formed on the side wall of the sliding plate 34 and located at one side close to the bottom end of the sliding plate 34. Goods 95 are placed on pallet 94, fork 7 is used for lifting pallet 94, and fork 7 is provided with two, and 7 length direction's of fork one end fixed mounting have plug block 71, and the one end slope that fork 7 kept away from plug block 71 simultaneously upwards sets up, and fork 7 length direction is perpendicular with the slide plate 34 lateral wall of seting up plug hole 341.

Referring to fig. 4 and 5, the insertion block 71 is inserted into the insertion hole 341, the fork 7 abuts against the side wall of the sliding plate 34 away from the moving plate 35, an installation corner 72 is formed at one end of the insertion block 71 away from the fork 7, and a welding area 73 convenient for welding is formed between the installation corner 72 and the side wall of the insertion hole 341.

Referring to fig. 4 and 5, guide corners 74 are formed on both vertical sides of one end of the pallet fork 7 away from the insertion block 71, rounded corners 75 are formed on both sides of the upper surface of the pallet fork 7, and the guide corners 74 facilitate the pallet fork 7 to extend below the pallet 94; the lower surface of the fork 7 is provided with a first cavity 76, a second cavity 77 and a third cavity 78 at intervals in sequence along the length direction of the fork 7, the widths of the first cavity 76, the second cavity 77 and the third cavity 78 are gradually reduced and are communicated with each other, and meanwhile, the third cavity 78 is communicated with one end, close to the insertion block 71, of the fork 7.

Referring to fig. 4 and 7, the hydraulic cylinder 51 is actuated to move the driving plate 52 upwards, the driving plate 52 upwards moves the driving wheel 53 and the mounting rail 31 upwards, the driving belt 54 moves the driving wheel 53 upwards to move the sliding plate 34, the sliding plate 34 moves to move the fork 7, and therefore the hydraulic cylinder 51 is actuated to move the mounting rail 31 and the fork 7 simultaneously.

Referring to fig. 2 and 8, a limiting device 8 for limiting the goods 95 on the pallet 94 is arranged on the sliding plate 34, horizontal positioning rods 36 are fixedly arranged on two opposite side walls of the sliding plate 34 and above the pallet 94, the length direction of each positioning rod 36 is perpendicular to the length direction of the pallet fork 7, and positioning holes 37 are formed in the positioning rods 36 along the length direction of the positioning rods 36; the two positioning rods 36 are respectively provided with a limiting device 8 for limiting the goods 95, and the two limiting devices 8 are respectively pressed on two opposite side walls of the goods 95; the limiting device 8 comprises a limiting plate 81 and a torsion spring 82.

Referring to fig. 8 and 9, the positioning hole 37 is provided with the fixed disk 38 through the insertion column 384, the insertion column 384 is square and is fixedly mounted on the lower surface of the fixed disk 38, the lower surface of the fixed disk 38 abuts against the upper surface of the positioning rod 36, the upper surface of the fixed disk 38 is provided with the mounting groove 381, the bottom of the mounting groove 381 is located at the center of the mounting groove 381, the insertion groove 382 is formed, and meanwhile, the cross section of the insertion groove 382 is square.

Referring to fig. 8 and 9, a support bearing 383 is installed on the installation groove 381 in a clamped mode, a clamping column 385 is installed on the insertion groove 382 in an inserted mode, the clamping column 385 vertically penetrates through the support bearing 383 upwards, and a vertical rotating shaft 386 is fixedly installed on the clamping column 385. The rotating shaft 386 is rotatably sleeved with a rotating ring 387, a rotating pipe is coaxially and fixedly mounted on the lower surface of the rotating ring 387, the rotating pipe abuts against the inner ring of the support bearing 383 and is rotatably sleeved on the rotating shaft 386, a horizontal connecting rod 388 is fixedly mounted on the side wall of the rotating ring 387, and the length direction of the connecting rod 388 is perpendicular to the length direction of the positioning rod 367.

Referring to fig. 2 and 8, the position limiting plate 81 is fixedly installed on one end of the connecting rod 388 far away from the rotating ring 387, and the length direction of the position limiting plate 81 is parallel to the length direction of the connecting rod 388. The top end of the rotating shaft 386 is coaxially and fixedly provided with a positioning disc 389, the torsion spring 82 is sleeved on the rotating shaft 386, two ends of the torsion spring are respectively installed on the positioning disc 389 and the rotating ring 387 in an inserting mode, and meanwhile, installation holes matched with the torsion spring 82 in an inserting mode are formed in the positioning disc 389 and the rotating ring 387. Therefore, the two position limiting plates 81 are pressed against the two opposite side walls of the cargo 95 under the action of the torsion spring 82, so as to position the cargo 95.

Referring to fig. 8 and 9, the two fixing disks 38 are provided with the pushing devices 9 for pushing the limiting plates 81, each pushing device 9 includes a positioning block 91, a positioning spring 92 and a pushing block 93, the upper surface of each fixing disk 38 is provided with a lifting groove 911 between two rotating shafts 386, the positioning blocks 91 are vertically slidably mounted on the lifting grooves 911, the top ends of the positioning blocks 91 are provided with pushing angles 913 near the side edges of the limiting plates 81, and the connecting rods 388 and the positioning blocks 91 are projected in the vertical direction to form an intersection.

Referring to fig. 8 and 9, two ends of the positioning spring 92 respectively abut against the bottom of the lifting groove 911 and the bottom of the positioning block 91, and a sliding hole 912 communicated with the lifting groove 911 is formed in the side wall of the fixed disk 38 close to the position-limiting plate 81; the push block 93 is horizontally arranged on the sliding hole 912 in a sliding manner, the side wall of the positioning block 91 close to one side of the push block 93 is fixedly provided with a guide block 914, one end of the guide block 914 close to the push block 93 is provided with an inclined guide surface 915 which is attached together, and the cross-sectional area of the top end of the guide block 914 is smaller than that of the bottom end of the guide block 914; and the positioning block 91 and the guide block 914 can be upwardly taken out of the elevation groove 911. And in a natural state, the guide surfaces 915 on the guide block 914 and the push block 93 are attached together.

Referring to fig. 8 and 9, the positioning spring 92 is placed at the bottom of the lifting groove 911, the positioning block 91 and the guide block 914 are placed in the lifting groove 911, the bottom end of the positioning block 91 abuts against the top end of the positioning spring 92, the positioning block 91 is pressed downwards, the push block 93 is slidably arranged in the sliding hole 912 in a penetrating mode, the guide block 914 is attached to the guide surface 915 of the push block 93, and the positioning block 91 is released finally, so that the positioning block 91, the guide block 914, the positioning spring 92 and the push block 93 can be replaced and installed.

Referring to fig. 2 and 9, one end of the pushing block 93, which is far away from the guide block 914, extends horizontally to the goods 95, when the goods 95 abuts against the sliding plate 34, the goods 95 presses the pushing block 93, the pushing block 93 pushes the guide block 914 and the positioning block 91 to move downwards, and the positioning block 91 is far away from the connecting rod 388, so that the limiting plate 81 abuts against the goods 95 to limit the goods 95; and goods 95 keeps away from shifting board 34 and ejector pad 93, and locating piece 91 shifts up under the positioning spring 92 effect, and the last promotion angle 913 of locating piece 91 promotes the connecting rod 388 and removes, and connecting rod 388 removes and makes limiting plate 81 keep away from goods 95, and locating piece 91 is contradicted and is carried out spacing to limiting plate 81 on connecting rod 388 at last.

The working principle of the embodiment of the application is as follows:

the fork 7 extends below the pallet 94 under the action of the guide angle 74, the goods 95 abut against the sliding plate 34, the pushing block 93 is extruded by the goods 95 to move, the pushing block 93 moves to drive the positioning block 91 to be far away from the connecting rod 388, and therefore the two limiting plates 81 abut against and press against the goods 95 under the action of the torsion spring 82 to limit the goods 95; the hydraulic cylinder 51 is then actuated to move the forks 7 upwardly to lift the load 95 and then move the load 95, and the retainer plate 81 reduces the likelihood of damage to the load 95 as it moves and falls off the pallet 94.

When the goods 95 need to be put down, the pallet 94 is put down, the fork 7 is far away from the pallet 94 and the goods 95, the push block 93 is far away from the goods 95, the positioning block 91 moves upwards under the action of the positioning spring 92, the push angle 913 pushes the connecting rod 388 and the limiting plate 81 to be far away from the goods 95, and finally the positioning block 91 is abutted against the connecting rod 388 to position the limiting plate 81, so that the probability that the limiting plate 81 is abutted against the goods 95 to damage the goods 95 is reduced, and meanwhile, the probability that the goods 95 fall off from the pallet 94 to be damaged is also reduced.

The driving belt 54 can be detached by screwing the fixing nut 65 to be disengaged from the fixing screw 64 and then removing the fixing screw 64; the driving belt 54 penetrates between the driving wheel 53 and the limiting wheel 523, the fixing screw 64 penetrates through the head of the connecting screw 61 and the connecting block 63, then the fixing nut 65 is screwed to be tightly pressed on the connecting screw 61, then one connecting nut 62 is screwed on the connecting screw 61, then the connecting screw 61 penetrates through the fixing plate 23, so that the connecting nut 62 is tightly pressed on the fixing plate 23, the other connecting nut 62 is screwed on the connecting screw 61, so that the connecting nut 62 is tightly pressed on the fixing plate 23, and the driving belt 54 is fixedly connected with the fixing plate 23 and the sliding plate 34 respectively, so that the installation and the disassembly of the driving belt 54 are realized, and the convenience in installing the forklift gantry is improved; meanwhile, the position of the connecting screw rod 61 can be adjusted by screwing the connecting nut 62, so that the tightness of the driving belt 54 can be adjusted, and the stability of the pallet fork 7 during moving is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (5)

1. The utility model provides a lightweight fork truck portal device, includes portal frame body (1), slides fork (7) of setting on portal frame body (1), its characterized in that: the door frame body (1) is provided with a driving device (5) connected with the pallet fork (7), and the driving device (5) comprises an oil hydraulic cylinder (51), a driving plate (52), a driving wheel (53) and a driving belt (54);

the hydraulic cylinder (51) is arranged on the door frame body (1), the driving plate (52) is arranged on a piston rod of the hydraulic cylinder (51), the driving wheel (53) is rotatably arranged on the driving plate (52), and two ends of the driving belt (54) are respectively detachably connected with the door frame body (1) and the pallet fork (7) through connecting mechanisms (6) and bypass the driving wheel (53);

the door frame body (1) comprises an outer frame body (2) and an inner frame body (3), the outer frame body (2) is connected with a forklift body, the inner frame body (3) is arranged on the outer frame body (2) in a sliding mode, a moving frame (33) which is connected with a fork (7) and used for positioning goods (95) is arranged on the inner frame body (3) in a sliding mode, a driving plate (52) is arranged on the inner frame body (3), and the outer frame body (2) comprises two guide rails (21) and a connecting plate (22) which connects the two guide rails (21) together;

one end of the fork (7) in the length direction is connected with the moving frame (33), a first cavity (76), a second cavity (77) and a third cavity (78) which are communicated with each other are arranged on the lower surface of the fork (7) at intervals along the length direction of the fork (7), the widths of the first cavity (76), the second cavity (77) and the third cavity (78) are gradually reduced, and the third cavity (78) is communicated with one end, close to the moving frame (33), of the fork (7);

the goods shelf is characterized in that two limiting devices (8) for limiting goods (95) are arranged on the moving frame (33), each limiting device (8) comprises a limiting plate (81) and a torsion spring (82), each limiting plate (81) is rotatably arranged on the moving frame (33) through a rotating shaft (386), and two ends of each torsion spring (82) are respectively connected with the moving frame (33) and the corresponding limiting plate (81) and used for maintaining the corresponding limiting plate (81) to be pressed against the goods (95);

the movable rack (33) is provided with a plurality of positioning holes (37) at intervals, the bottom end of the rotating shaft (386) is provided with a fixed disk (38) in plug-in fit with the positioning holes (37), the limiting plate (81) is rotatably sleeved on the rotating shaft (386), the fixed disk (38) is provided with a supporting bearing (383) abutting against the limiting plate (81), the top end of the rotating shaft (386) is provided with a positioning disk (389) and a clamping column (385) penetrating through the supporting bearing (383) and in plug-in fit with the fixed disk (38), and two ends of the torsion spring (82) are in plug-in fit with the positioning disk (389) and the limiting plate (81);

be provided with thrust unit (9) that promotes limiting plate (81) on fixed disk (38), thrust unit (9) are including locating piece (91), positioning spring (92), ejector pad (93), locating piece (91) slide and set up on fixed disk (38), positioning spring (92) both ends are connected with ejector pad (93) and fixed disk (38) respectively, locating piece (91) promote limiting plate (81) under positioning spring (92) effect and keep away from goods (95), ejector pad (93) slide and set up on fixed disk (38) and with locating piece (91) and goods (95) contact, ejector pad (93) receive goods (95) extrusion back promotion locating piece (91) and keep away from limiting plate (81), limiting plate (81) are spacing to goods (95) under torsional spring (82) effect, and behind goods (95) were kept away from to ejector pad (93), the positioning spring (92) pushes the positioning block (91) to push the limiting plate (81) to be far away from the goods (95).

2. The lightweight forklift mast apparatus according to claim 1, wherein: coupling mechanism (6) include connecting screw (61), two coupling nut (62), connecting block (63), clamping screw (64) and fixation nut (65), sliding on penetrating the portal body (1) connecting screw (61), two coupling nut (62) threaded connection just supports tightly on portal body (1) the wall of the back of the body that is carried on connecting screw (61), connecting block (63) fixed mounting is on the both ends of driving band (54), clamping screw (64) pass connecting screw (61) head and connecting block (63), fixation nut (65) threaded connection just supports tightly on connecting screw (61) on fixation screw (64).

3. The lightweight forklift mast apparatus according to claim 1, wherein: rotate on outer support body (2) and be provided with first gyro wheel (12) of conflict on support body (3) including, it is provided with second gyro wheel (16) and third gyro wheel (17) of conflict on outer support body (2) to rotate on inner support body (3), third gyro wheel (17) and first gyro wheel (12) direction of rotation axis are parallel and perpendicular with second gyro wheel (16) direction of rotation, conflict on the both sides wall that outer support body (2) is adjacent second gyro wheel (16) and third gyro wheel (17).

4. The lightweight forklift mast apparatus according to claim 1, wherein: the movable rack (33) is provided with a plug hole (341), the fork (7) is provided with a plug block (71) which is in plug fit with the plug hole (341), the plug block (71) is provided with a mounting angle (72), and a welding area (73) which is convenient to weld is formed between the mounting angle (72) and the side wall of the plug hole (341).

5. The lightweight forklift mast apparatus according to claim 1, wherein: one end, far away from the moving frame (33), of the pallet fork (7) is provided with a guide angle (74) enabling the pallet fork (7) to extend to the position below a pallet (94) used for loading cargos (95), and the height, close to one end of the moving frame (33), of the pallet fork (7) in an inclined state is lower than that of one end, far away from the moving frame (33).

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