Forward moving type forklift

Abstract

The invention relates to a reach forklift. The technical problem that in the prior art, a driver observes the height of a goods shelf to manually adjust the lifting height of a forklift portal frame is solved. Comprising a forklift body, supporting legs are arranged on the two sides of the lower end of the forklift body respectively, a driving assembly is arranged in the middle of one end of the forklift body, a portal fixing base is movably arranged between the two supporting legs, a portal body is vertically arranged in the portal fixing base, a fork connecting base is arranged on one side of the portal body, outer gantries are arranged on the two sides of the portal body respectively, and middle gantries are arranged on one sides of the outer gantries. The middle portal frame is provided with an inner portal frame, and a height pre-selecting structure is arranged between the inner portal frame and the pallet fork connecting base and / or between the middle portal frame and the outer portal frame. The height pre-selection structure has the advantages that the fork piece lifting pre-selection assembly is installed between the pallet fork connecting base and the inner portal, the portal lifting pre-selection assembly is also installed between the middle portal and the outer portal, the operation height can be rapidly positioned, the preparation time is greatly shortened, the working efficiency is improved, and the operation accuracy is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of forklift equipment, and in particular relates to a reach-type forklift. Background Art

[0002] In terms of market demand, reach trucks, as logistics handling equipment, play an important role in lifting and moving goods. They insert the load-bearing forks into the holes of the pallet, and drive the hydraulic system to lift and lower the pallet goods. The forklift completes the handling operation, and is the most effective and common pallet transport tool. Reach trucks are usually used to stack goods on high shelves, and the forklift mast needs to be operated for stacking. The lifting height of the existing forklift mast is manually adjusted by the driver by observing the height of the shelf to ensure smooth stacking. The lifting of the forklift mast requires the driver to observe and confirm the height adjustment, which will cause the height adjustment to easily deviate during operation, and novice drivers need to make multiple adjustments to ensure accuracy, which will waste time and reduce work efficiency. Summary of the invention

[0003] The object of the present invention is to provide a reach forklift in view of the above problems.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a forward-moving forklift comprises a forklift body, legs with load-bearing wheels are respectively provided on both sides of the lower end of the forklift body, a driving assembly is provided at the middle part of one end of the forklift body away from the legs, a gantry fixing seat which can move along the length direction of the legs is movably provided between the two legs, a gantry body is vertically provided in the gantry fixing seat, a fork connecting seat which can be lifted up and down along the gantry body and has a plurality of fork parts is provided on the side of the gantry body away from the forklift body, outer gantry frames connected with the gantry fixing seats are respectively provided on both sides of the gantry body, a middle gantry frame is provided on the side of the outer gantry frame away from the gantry fixing seat, and an inner gantry frame is provided on the side of the middle gantry frame away from the outer gantry frame, the outer gantry, the middle gantry and the inner gantry are arranged in sequence with each other in an offset manner, and a height preselection structure is provided between the inner gantry and the fork connecting seat and / or between the middle gantry and the outer gantry. The height pre-selection structure between the inner mast and the fork connecting seat can control the height of the fork connecting seat when it is lifted or lowered, thereby improving accuracy. At the same time, the height pre-selection structure between the middle mast and the outer mast can control the height of the middle mast when it is lifted or lowered, thereby improving accuracy, thereby improving overall work efficiency. In this way, the operator inputs the preset value in advance, and the middle mast and the fork connecting seat will automatically lift or lower to the specified height. At the same time, the preset function can quickly adjust the lifting height in a variety of work scenarios, and can ensure that it is lifted or lowered to the specified height, achieving precise docking and improving operational accuracy.

[0005] In the above-mentioned reach forklift, the height preselection structure includes a fork lifting preset component that is arranged between the fork connecting seat and the inner mast and can control the lifting height of the fork connecting seat, and a mast lifting preset component that is arranged between the middle mast and the outer mast and can control the lifting height of the middle mast. The fork lifting preset component and the mast lifting preset component are used to further increase the overall stability and reduce the lifting error.

[0006] In the above-mentioned reach-forklift, a mast lifting installation part is provided on one side of the middle mast away from the mast fixing seat, a mast height preset installation part connected to the outer mast is provided on the side of the mast lifting installation part away from the middle mast, the mast lifting preset assembly includes a mast height preset device set on the mast height preset installation part, a first pulley with an encoder and a first proximity switch are provided in the mast height preset device, a mast height preset plate is provided between the middle mast and the mast fixing seat, and a first synchronous belt corresponding to the first pulley is provided between the mast height preset plate and the mast lifting installation part. The first synchronous belt is always in a taut state during operation, the first synchronous belt is shuttled and wound on the first pulley, the movement of the first synchronous belt drives the rotation of the first pulley, and the mast height preset device is in a stationary state, and the number of rotations of the first pulley is transmitted to the first proximity switch through the encoder, thereby realizing height preselection control.

[0007] In the above-mentioned reach-forklift, a fork lifting preset plate is provided between the fork connecting seats, a fork lifting fixing plate is provided between the end of the inner mast away from the mast fixing seat, a fork lifting mounting plate is provided between the end of the inner mast close to the mast fixing seat, the fork lifting preset assembly includes a fork height preset device provided on the fork lifting preset plate, a second pulley with an encoder and a second proximity switch are provided in the fork height preset device, and a second synchronous belt corresponding to the second pulley is provided between the fork lifting fixing plate and the fork lifting mounting plate. The second synchronous belt is always in a taut state during operation, the second synchronous belt is against the second pulley, the second pulley moves up and down and contacts the second synchronous belt to start rotating, and the second synchronous belt is in a stationary state, and the number of rotations of the second pulley is transmitted to the second proximity switch through the encoder, thereby realizing height preselection control.

[0008] In the above-mentioned forward-moving forklift, a battery unit having a battery bottom frame is provided on the side of the forklift body close to the mast fixing seat, and bottom frame fixing components that enable the battery unit to move with the mast fixing seat or to fix the battery unit to the support leg are respectively provided at both ends of the battery bottom frame on the side away from the forklift body, and the bottom frame fixing components include bottom frame fixing blocks arranged at both ends of the battery bottom frame on the side away from the forklift body, one end of the bottom frame fixing block is fixedly connected to the lower end of the battery bottom frame, and the bottom frame fixing block is fixedly connected to the support leg or the mast fixing seat through a latch.

[0009] In the above-mentioned reach-forklift, the bottom frame fixing block is provided with a leg fixing hole on one side away from one end of the battery bottom frame, and a fixing seat fixing hole on the other side, the upper end of the leg is provided with a leg connecting hole, the lower end of the door frame fixing seat is provided with a bottom frame connecting block, and the inner side of the bottom frame connecting block is provided with a fixing seat connecting hole, and the upper end of the latch is provided with a limiting portion in the circumferential direction, the latch is arranged between the fixing seat connecting hole and the fixing seat fixing hole, and the lower end of the limiting portion contacts the upper end of the bottom frame connecting block; or the latch is arranged between the leg fixing hole and the leg connecting hole, and the lower end of the limiting portion contacts the upper end of the bottom frame fixing block. When the leg fixing hole of the bottom frame fixing block is connected with the leg connecting hole of the leg through the latch, the battery component will be fixed to the leg, and the battery component will not move at this time, and when the fixing seat fixing hole of the bottom frame fixing block is connected with the fixing seat connecting hole of the bottom frame connecting block through the latch, the battery component will move with the movement of the door frame fixing seat.

[0010] In the above-mentioned reach-forklift, the outer mast is provided with an axially extending outer mast slot on one side close to the middle mast, the middle mast is provided with axially extending middle mast slots on both sides, the inner mast is provided with axially extending inner mast slots at both ends, one side of the outer mast slot is provided with an outer mast plate, and the other side is provided with an outer mast mounting portion with a mounting slot, the middle mast plates are provided on both sides of the middle mast slot, the inner mast plates are provided on both sides of the inner mast slot, one end of the outer mast plate is provided with an outer plate notch connected to the outer mast slot, one end of the middle mast plate located in the inner mast slot is provided with a first middle plate notch, the middle mast plate located in the outer mast slot and away from the first middle plate notch is provided with a second middle plate notch, the inner mast plate located in the middle mast slot and close to the second middle plate notch is provided There is a notch in the inner plate, and a first adjusting bolt is provided on the middle mast near one end of the fork lifting and fixing plate and away from the first middle plate notch, one end of the first adjusting bolt axially penetrates the middle mast plate and abuts against the side face of the inner mast plate in the middle mast groove, an outer mast mounting portion is provided with an outer plate fixing block at one end near the outer plate notch, a second adjusting bolt is provided on the outer plate fixing block, one end of the second adjusting bolt axially penetrates the outer plate fixing block and abuts against the side face of the middle mast plate in the outer mast groove, a middle mast plate is provided with a middle plate fixing block at one end near the middle mast groove on one side of the outer mast plate and close to the second middle plate notch, a third adjusting bolt is provided on the middle plate fixing block, and one end of the third adjusting bolt axially penetrates the middle plate fixing plate and abuts against the side face of the outer mast plate.

[0011] In the above-mentioned forward-moving forklift, the outer mast groove is provided with an outer connecting hole at one end near the outer plate notch, an outer mast roller is provided in the outer connecting hole, and the outer side of the outer mast roller protrudes outside the outer plate notch, the middle mast groove is close to one side of the inner mast and is provided with a first middle connecting hole at one end near the first middle plate notch, a first middle mast roller is provided in the first middle connecting hole, the middle mast groove is close to one side of the outer mast and is close to one end of the second middle plate notch, a second middle mast roller is provided in the second middle connecting hole, the outer side of the first middle mast roller protrudes outside the first middle plate notch, the outer side of the second middle mast roller protrudes outside the second middle plate notch, the inner mast groove is close to one side of the middle mast and is close to one end of the inner plate notch, an inner mast roller is provided in the inner connecting hole, and the outer side of the inner mast roller protrudes outside the inner plate notch. The gap between the inner mast and the middle mast is adjusted by tightening the first adjusting bolt, so that the first middle mast roller fits better with the inner mast and the inner mast roller fits better with the middle mast. The gap between the middle mast and the outer mast is adjusted by tightening the second adjusting bolt, so that the outer mast roller fits better with the middle mast. At the same time, the gap between the middle mast and the outer mast is adjusted by tightening the third adjusting bolt, so that the second middle mast roller fits better with the outer mast.

[0012] In the above-mentioned forward-moving forklift, a gantry lifting and fixing plate located in the mounting groove and corresponding to the gantry lifting and fixing part is provided on one side of the outer gantry away from the gantry lifting and fixing part, and a gantry hydraulic lifting rod is provided on both sides between the gantry lifting and fixing part and the gantry lifting and fixing plate, the upper end of the gantry hydraulic lifting rod is in contact with the lower end of the gantry lifting and fixing part, and the lower end of the gantry hydraulic lifting rod is in contact with the gantry lifting and fixing plate, a balancing wheel is provided on the inner side of both ends of the gantry lifting and fixing part, a balancing chain is provided on the balancing wheel, a balancing block is provided on the end of the balancing chain close to the gantry fixing seat, a fork hydraulic lifting rod is provided in the middle part of the fork lifting and fixing plate, a chain wheel group is provided on the end of the fork hydraulic lifting rod away from the fork lifting and fixing plate, a plurality of connecting chains are wound around the chain wheel group, and the lower end of the connecting chain is fixedly connected to the fork lifting preset plate. The middle mast achieves height lifting and lowering through the mast hydraulic lifting rod. The mast hydraulic lifting rod supports the mast lifting installation part to drive the middle mast to operate. The balance wheel and balance chain maintain the balance when the middle mast is raised or lowered. During the operation, the unbalanced force caused by the change of center of gravity, external force and other factors is offset, so that the mast maintains a stable operating state. The fork hydraulic lifting rod is connected to the fork lifting preset plate through the connecting chain, and at the same time drives the fork connecting seat to rise and fall.

[0013] In the above-mentioned forward-moving forklift, movable extension parts are respectively provided on both sides of the gantry fixing seat near one end of the forklift body, the movable extension parts correspond to the legs and are parallel to each other, the length of the battery bottom frame is greater than the length between the two movable extension parts, and the length of the battery bottom frame is less than the length between the two legs, a gantry translation proximity switch is provided on one side of the movable extension part near one end of the forklift body, a plurality of sensing grooves axially distributed in sequence and corresponding to one of the gantry translation proximity switches are provided on one side of the lower end of the forklift body, a sliding bar is provided on the upper end of the leg near the movable extension part, a plurality of sliding blocks matching the sliding bar are respectively provided on both sides of the lower end of the battery bottom frame, and a leg support is provided on one side of the leg near the gantry fixing seat. The forklift body is provided with an overhead guard frame at the upper end, an adjustable seat is provided at the inner side of the forklift body, an operating table is provided at one side of the adjustable seat, an adjustable steering wheel is provided at one side of the operating table, a cup holder is provided at the lower end of the adjustable steering wheel, a placing frame is provided at one end of the cup holder, a covering is provided at one end of the operating table, and a switching button connected to the drive assembly and capable of switching the drive assembly between 180 degrees and 360 degrees is provided at one end of the operating table close to the covering. The mast fixing seat is moved forward and backward by a hydraulic push rod, and the forward speed of the mast fixing seat is controlled by the sensing slot and the mast translation proximity switch. The mast translation proximity switch senses the multiple rows of sensing slots below to adjust the speed reduction. At the same time, the steering wheel and seat are both adjustable, which makes the driver's operation more comfortable. In addition, a cup holder and a placement frame are added to rationally utilize the use space of the forklift body.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. The device uses a height pre-selection structure and installs a fork lifting preset component between the fork connecting seat and the inner mast, and also installs a mast lifting preset component between the middle mast and the outer mast, which can realize rapid positioning of the working height, greatly shorten the preparation time, improve work efficiency, and also improve the operation accuracy, avoid collision risks, and thus reduce human errors.

[0016] 2. The device installs the battery components in the battery bottom frame, and the battery bottom frame is connected to the fixing seat fixing hole of the bottom frame fixing block and the fixing seat connecting hole of the door frame fixing seat, so that the battery components can be pulled out when the door frame fixing seat is fixed, so as to facilitate the maintenance and repair of the battery components. At the same time, the battery bottom frame is connected to the leg connecting hole of the leg through the leg fixing hole of the bottom frame fixing block, so that the battery bottom frame will be fixed to the leg and will not move when the door frame fixing seat moves.

[0017] 3. The device adjusts the gaps between the outer mast, middle mast and inner mast through the gap adjustment assembly, so that the rollers on the mast can run in close proximity, thereby ensuring the stability of the mast operation. The device has a simple structure and the gap can be adjusted at any time by tightening the bolts with tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the present invention from another perspective.

[0020] Figure 3 The present invention Figure 1 A magnified view of the structure at center.

[0021] Figure 4 The present invention Figure 2 A magnified view of the structure at point B.

[0022] Figure 5 It is a structural schematic diagram of the battery component connected to the door frame fixing seat in the present invention.

[0023] Figure 6 The present invention Figure 5 Enlarged view of the structure at C in the middle.

[0024] Figure 7 It is a structural schematic diagram of the supporting legs and the door frame fixing seat in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the door frame body in the present invention.

[0026] Fig. 9 The present invention Figure 8 Enlarged view of the structure at D in the middle.

[0027] Fig.10 The present invention Figure 8 Enlarged view of the structure at E in the middle.

[0028] Fig.11 It is a structural schematic diagram of the door frame body in another viewing angle of the present invention.

[0029] Fig.12 The present invention Fig.11 Enlarged view of the structure at F in the middle.

[0030] Fig.13 The present invention Fig.11 Enlarged view of the structure at G in the middle.

[0031] Fig.14 It is a structural schematic diagram of the bottom of the door frame body in the present invention.

[0032] Fig.15 It is a structural explosion diagram of a part of the door frame body in the present invention.

[0033] In the figure: forklift body 1, outrigger 11, load-bearing wheel 111, mast fixing seat 12, fork connecting seat 13, fork member 131, fork lifting preset plate 132, battery member 14, battery bottom frame 141, movable extension part 15, mast translation proximity switch 16, induction slot 17, slide bar 18, slide block 19, mast body 2, outer mast 21, outer mast slot 211, outer mast plate 212, outer plate notch 213, middle mast 22, middle mast slot 221, middle mast plate 222, first middle plate notch 223, second middle plate Notch 224, inner door frame 23, inner door frame groove 231, inner door frame plate 232, inner plate notch 233, outer door frame mounting portion 24, mounting groove 241, first adjusting bolt 25, outer plate fixing block 26, second adjusting bolt 261, middle plate fixing block 27, third adjusting bolt 271, outer connecting hole 28, outer door frame roller 281, first middle connecting hole 29, first middle door frame roller 291, second middle connecting hole 292, second middle door frame roller 293, inner connecting hole 30, inner door frame roller 301, height preselection structure 3 , fork lifting preset component 31, door frame lifting preset component 32, door frame height preset device 33, first pulley 34, first proximity switch 35, first synchronous belt 36, fork height preset device 37, second pulley 38, second proximity switch 39, second synchronous belt 40, bottom frame fixing component 4, bottom frame fixing block 41, latch 42, leg fixing hole 43, fixing seat fixing hole 44, leg connecting hole 45, bottom frame connecting block 46, fixing seat connecting hole 47, limit part 48, door frame lifting fixing plate 5, door frame hydraulic lifting rod 51, balancing wheel 52, balancing chain 53, balancing block 54, fork hydraulic lifting rod 55, chain wheel set 56, connecting chain 57, leg bracket 6, movable groove 61, movable roller 62, auxiliary roller 63, overhead guard 64, adjustable seat 65, operating table 66, adjustable steering wheel 67, cup holder 68, placement frame 69, cover 70, switch button 71, door frame lifting installation part 8, door frame height preset installation part 81, door frame height preset plate 82, fork lifting fixing plate 83, fork lifting installation plate 84. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-15As shown, a reach-forklift comprises a forklift body 1, and legs 11 with load-bearing wheels 111 are respectively arranged on both sides of the lower end of the forklift body 1, a driving assembly is arranged in the middle of one end of the forklift body 1 away from the legs 11, a gantry fixing seat 12 movable along the length direction of the legs 11 is arranged between the two legs 11, a gantry body 2 is vertically arranged in the gantry fixing seat 12, and a side of the gantry body 2 away from the forklift body 1 is provided with a plurality of fork members 13 that can be lifted up and down along the gantry body 2 and have 1, the gantry body 2 has outer gantry 21 connected to the gantry fixing seat 12 on both sides, the outer gantry 21 has a middle gantry 22 on the side away from the gantry fixing seat 12, and the middle gantry 22 has an inner gantry 23 on the side away from the outer gantry 21. The outer gantry 21, the middle gantry 22 and the inner gantry 23 are sequentially staggered and plugged with each other, and a height preselection structure 3 is provided between the inner gantry 23 and the fork connecting seat 13 and / or between the middle gantry 22 and the outer gantry 21. The height preselection structure 3 between the inner mast 23 and the fork connecting seat 13 can control the height of the fork connecting seat 13 when it is raised or lowered, thereby improving accuracy. At the same time, the height preselection structure 3 between the middle mast 22 and the outer mast 21 can control the height of the middle mast 22 when it is raised or lowered, thereby improving accuracy, thereby improving overall work efficiency. In this way, the operator inputs the preset value in advance, and the middle mast 22 and the fork connecting seat 13 will automatically rise or fall to the specified height. At the same time, the preset function can quickly adjust the lifting height in a variety of work scenarios, and can ensure that it is lifted or lowered to the specified height, achieving precise docking and improving operational accuracy.

[0036] Combination Figure 1 , Figure 8-Figure 13 As shown, the height preselection structure 3 includes a fork lifting preset component 31 disposed between the fork connecting seat 13 and the inner mast 23 and capable of controlling the lifting height of the fork connecting seat 13, and a mast lifting preset component 32 disposed between the middle mast 22 and the outer mast 21 and capable of controlling the lifting height of the middle mast 22. The fork lifting preset component 31 and the mast lifting preset component 32 are used to further increase the overall stability and reduce the lifting error.

[0037] Among them, a mast lifting installation part 8 is provided on one side of the middle mast 22 away from the mast fixing seat 12, and a mast height preset installation part 81 connected to the outer mast 21 is provided on the side of the mast lifting installation part 8 away from the middle mast 22. The mast lifting preset assembly 32 includes a mast height preset device 33 set on the mast height preset installation part 81, and a first pulley 34 with an encoder and a first proximity switch 35 are provided in the mast height preset device 33. A mast height preset plate 82 is provided between the middle mast 22 and the mast fixing seat 12, and a first synchronous belt 36 corresponding to the first pulley 34 is provided between the mast height preset plate 82 and the mast lifting installation part 8. The first synchronous belt 36 is always in a taut state during operation, and the first synchronous belt 36 is shuttled and wound on the first pulley 34. The movement of the first synchronous belt 36 drives the rotation of the first pulley 34, while the mast height preset device 33 is in a stationary state, and the number of rotations of the first pulley 34 is transmitted to the first proximity switch 35 through the encoder, thereby realizing height preselection control.

[0038] Specifically, a fork lifting preset plate 132 is provided between the fork connecting seats 13, a fork lifting fixed plate 83 is provided between the end of the inner mast 23 away from the mast fixing seat 12, a fork lifting mounting plate 84 is provided between the end of the inner mast 23 close to the mast fixing seat 12, and a fork lifting preset assembly 31 includes a fork height preset device 37 provided on the fork lifting preset plate 132, a second pulley 38 with an encoder and a second proximity switch 39 are provided in the fork height preset device 37, and a second synchronous belt 40 corresponding to the second pulley 38 is provided between the fork lifting fixed plate 83 and the fork lifting mounting plate 84. The second synchronous belt 40 is always in a taut state during operation, the second synchronous belt 40 is against the second pulley 38, the second pulley 38 moves up and down and contacts the second synchronous belt 40 to start rotating, and the second synchronous belt 40 is in a stationary state, and the number of rotations of the second pulley 38 is transmitted to the second proximity switch 39 through the encoder, thereby realizing height preselection control.

[0039] Combination Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, a battery component 14 having a battery bottom frame 141 is provided on the side of the forklift body 1 close to the mast fixing seat 12, and bottom frame fixing components 4 that enable the battery component 14 to move with the mast fixing seat 12 or to fix the battery component 14 to the support leg 11 are respectively provided at both ends of the battery bottom frame 141 on the side away from the forklift body 1. The bottom frame fixing component 4 includes bottom frame fixing blocks 41 that are arranged on both ends of the battery bottom frame 141 on the side away from the forklift body 1, one end of the bottom frame fixing block 41 is fixedly connected to the lower end of the battery bottom frame 141, and the bottom frame fixing block 41 is fixedly connected to the support leg 11 or the mast fixing seat 12 through a latch member 42.

[0040] Among them, a leg fixing hole 43 is provided on one side of one end of the bottom frame fixing block 41 away from the battery bottom frame 141, and a fixing seat fixing hole 44 is provided on the other side, a leg connecting hole 45 is provided on the upper end of the leg 11, a bottom frame connecting block 46 is provided on one side of the lower end of the door frame fixing seat 12, and a fixing seat connecting hole 47 is provided on the inner side of the bottom frame connecting block 46, a limiting portion 48 is circumferentially provided on the upper end of the latch member 42, the latch member 42 is arranged between the fixing seat connecting hole 47 and the fixing seat fixing hole 44, and the lower end of the limiting portion 48 contacts the upper end of the bottom frame connecting block 46; or, the latch member 42 is arranged between the leg fixing hole 43 and the leg connecting hole 45, and the lower end of the limiting portion 48 contacts the upper end of the bottom frame fixing block 41. When the leg fixing hole 43 of the bottom frame fixing block 41 is connected with the leg connecting hole 45 of the leg 11 through the latch member 42, the battery component 14 will be fixed to the leg 11, and the battery component 14 will not move at this time. When the fixing seat fixing hole 44 of the bottom frame fixing block 41 is connected with the fixing seat connecting hole 47 of the bottom frame connecting block 46 through the latch member 42, the battery component 14 will move along with the movement of the door frame fixing seat 12.

[0041] Combination Fig.14 and Fig.15As shown, the outer mast 21 is provided with an axially extending outer mast slot 211 on one side close to the middle mast 22, and the middle mast slots 221 are respectively provided on both sides of the middle mast 22, and the inner mast slots 231 are respectively provided at both ends of the inner mast 23, and an outer mast plate 212 is provided on one side of the outer mast slot 211, and an outer mast mounting portion 24 with a mounting slot 241 is provided on the other side, and middle mast plates 222 are respectively provided on both sides of the middle mast slot 221, and inner mast slots 231 are respectively provided at both ends. The inner door frame plate 232 is respectively provided on the sides, the outer door frame plate 212 is provided with an outer plate notch 213 connected to the outer door frame slot 211 at one end, the middle door frame plate 222 located in the inner door frame slot 231 is provided with a first middle plate notch 223 at one end, the middle door frame plate 222 located in the outer door frame slot 211 and away from the first middle plate notch 223 is provided with a second middle plate notch 224, the inner door frame plate 232 located in the middle door frame slot 221 and close to the second middle plate notch 224 at one end An inner plate notch 233 is provided, and a first adjusting bolt 25 is provided at one end of the middle mast 22 close to the fork lifting and fixing plate 83 and away from the first middle plate notch 223. One end of the first adjusting bolt 25 axially penetrates the middle mast plate 222 and abuts against the side of the inner mast plate 232 located in the middle mast groove 221. An outer mast mounting portion 24 is provided with an outer plate fixing block 26 at one end close to the outer plate notch 213. A second adjusting bolt 261 is provided on the outer plate fixing block 26. One end of the second adjusting bolt 261 axially penetrates the outer plate fixing block 26 and abuts against the side of the middle mast plate 222 located in the outer mast groove 211. A middle plate fixing block 27 is provided on one end of the middle mast plate 222 close to the middle mast groove 221 on one side of the outer mast plate 212 and close to the second middle plate notch 224. A third adjusting bolt 271 is provided on the middle plate fixing block 27, and one end of the third adjusting bolt 271 axially penetrates the middle plate fixing plate and abuts against the side of the outer mast plate 212.

[0042] Among them, the outer mast groove 211 is provided with an outer connecting hole 28 at one end near the outer plate notch 213, and an outer mast roller 281 is provided in the outer connecting hole 28. The outer side of the outer mast roller 281 protrudes from the outer side of the outer plate notch 213. The middle mast groove 221 near the inner mast 23 side and near the first middle plate notch 223 is provided with a first middle connecting hole 29, and a first middle mast roller 291 is provided in the first middle connecting hole 29. The middle mast groove 221 near the outer mast 21 side and near the second middle plate notch 224 of the middle mast 22 is provided with a first middle mast roller 291. A second middle connecting hole 292 is provided at one end, and a second middle mast roller 293 is provided in the second middle connecting hole 292. The outer side of the first middle mast roller 291 protrudes outside the first middle plate notch 223, and the outer side of the second middle mast roller 293 protrudes outside the second middle plate notch 224. The inner mast 23 is provided with an inner mast groove 231 close to the middle mast 22 side and an inner connecting hole 30 at one end close to the inner plate notch 233. An inner mast roller 301 is provided in the inner connecting hole 30, and the outer side of the inner mast roller 301 protrudes outside the inner plate notch 233. The gap between the inner mast 23 and the middle mast 22 is adjusted by tightening the first adjusting bolt 25, so that the first middle mast roller 291 can better fit with the inner mast 23 and the inner mast roller 301 can better fit with the middle mast 22. The gap between the middle mast 22 and the outer mast 21 is adjusted by tightening the second adjusting bolt 261, so that the outer mast roller 281 can better fit with the middle mast 22. At the same time, the gap between the middle mast 22 and the outer mast 21 is adjusted by tightening the third adjusting bolt 271, so that the second middle mast roller 293 can better fit with the outer mast 21.

[0043] Combination Figure 8 and Fig.11As shown, a gantry lifting fixing plate 5 located in the mounting groove 241 and corresponding to the gantry lifting mounting part 8 is provided on one side of the outer gantry 21 away from the gantry lifting mounting part 8, and a gantry hydraulic lifting rod 51 is provided on both sides between the gantry lifting mounting part 8 and the gantry lifting fixing plate 5, the upper end of the gantry hydraulic lifting rod 51 is in contact with the lower end of the gantry lifting mounting part 8, and the lower end of the gantry hydraulic lifting rod 51 is in contact with the gantry lifting fixing plate 5, and a balancing wheel 52 is provided on the inner side of both ends of the gantry lifting mounting part 8, and a balancing chain 53 is provided on the balancing wheel 52, and a balancing block 54 is provided at one end of the balancing chain 53 close to the gantry fixed seat 12, a fork hydraulic lifting rod 55 is provided in the middle of the fork lifting mounting plate 84, and a chain wheel group 56 is provided at the end of the fork hydraulic lifting rod 55 away from the fork lifting mounting plate 84, and a plurality of connecting chains 57 are wound around the chain wheel group 56, and the lower end of the connecting chain 57 is fixedly connected to the fork lifting preset plate 132. The middle mast 23 is raised and lowered in height by the mast hydraulic lifting rod 51. The mast hydraulic lifting rod 51 supports the mast lifting installation part 8 to run, thereby driving the middle mast 5 to run. The balance wheel 52 and the balance chain 53 maintain the balance when the middle mast 23 is raised or lowered. During the operation, the unbalanced force caused by the change of the center of gravity, the external force and other factors is offset, so that the mast maintains a stable operating state. The fork hydraulic lifting rod 55 is connected to the fork lifting preset plate 132 through the connecting chain 57, and at the same time drives the fork connecting seat 13 to rise and fall.

[0044] Combination Figure 2 , Figure 4 and Figure 7As shown, movable extension parts 15 are respectively provided on both sides of one end of the gantry fixing seat 12 near the forklift body 1, the movable extension parts 15 correspond to the support legs 11 and are parallel to each other, the length of the battery bottom frame 141 is greater than the length between the two movable extension parts 15, and the length of the battery bottom frame 141 is less than the length between the two support legs 11, a gantry translation proximity switch 16 is provided on one side of the movable extension part 15 near the forklift body 1, and a plurality of sensing slots 17 axially distributed in sequence and corresponding to one of the gantry translation proximity switches 16 are provided on one side of the lower end of the forklift body 1, a sliding bar 18 is provided on the upper end of the support leg 11 near the movable extension part 15, and a plurality of sliding blocks 19 matching the sliding bar 18 are respectively provided on both sides of the lower end of the battery bottom frame 141, a support leg bracket 6 is provided on the side of the support leg 11 near the gantry fixing seat 12, and the support leg An axially extending movable groove 61 is provided on the side of the bracket 6 away from the support leg 11, a plurality of movable rollers 62 located in the movable groove 61 are provided on the side of the movable extension portion 15 close to the support leg bracket 6, and an auxiliary roller 63 movable on the upper end of the slide bar 18 is provided on the side of the door frame fixing seat 12 close to the support leg 11; a top guard 64 is provided on the upper end of the forklift body 1, an adjustable seat 65 is provided on the inner side of the forklift body 1, an operating table 66 is provided on one side of the adjustable seat 65, an adjustable steering wheel 67 is provided on one side of the operating table 66, a cup holder 68 is provided at the lower end of the adjustable steering wheel 67, a placing frame 69 is provided at one end of the cup holder 68, a covering member 70 is provided at one end of the operating table 66, and a switching button 71 connected to the drive assembly and enabling the drive assembly to switch between 180 degrees or 360 degrees is provided at one end of the operating table 66 close to the covering member 70. The gantry fixing seat 12 is moved forward and backward by a hydraulic push rod. The forward movement speed of the gantry fixing seat 12 is controlled by the sensing slot 17 and the gantry translation proximity switch 16. The gantry translation proximity switch 16 senses the multiple rows of sensing slots 17 below to adjust the speed reduction. At the same time, the steering wheel and the seat are both adjustable, so that the driver has good operating comfort, and a cup holder 19 and a placement frame 20 are added to reasonably utilize the use space of the forklift body 1.

[0045] The principle of this embodiment is:

[0046] The gantry fixing seat 12 moves along the length direction of the support leg 11 through the movable roller 62 and the auxiliary roller 63, and the fork connecting seat 13 moves along with the gantry fixing seat 12. The battery component 14 is connected to the gantry fixing seat 12 or the support leg 11 through the bottom frame fixing component 4. When the battery component 14 is connected to the gantry fixing seat 12, it will be pulled out along with the movement of the gantry fixing seat 12. When the battery component 14 is connected to the support leg 11, it will be fixed. The movement of the gantry fixing seat 12 will not affect the battery component 14. The fork component 131 of the fork connecting seat 13 starts to fork the goods. After forking the goods, the fork connecting seat 5 is lifted and lowered along the height of the gantry body 2 through the fork component hydraulic lifting rod 55, and the fork component lifting preset component 31 is used to control the lifting height. At the same time, the middle gantry 22 is lifted and lowered by the gantry hydraulic lifting rod 51, and the gantry lifting preset component 32 is used to control the lifting height, thereby reducing the lifting error, increasing accuracy, and improving work efficiency.

[0047] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0048] Although this article makes more use of the forklift body 1, outriggers 11, load-bearing wheels 111, mast fixing seat 12, fork connecting seat 13, fork member 131, fork lifting preset plate 132, battery member 14, battery bottom frame 141, movable extension part 15, mast translation proximity switch 16, induction slot 17, slide bar 18, slide block 19, mast body 2, outer mast 21, outer mast slot 211, outer mast plate 212, outer plate notch 213, middle mast 22, middle mast slot 221, middle mast plate 222, first middle plate notch 223, second middle Plate notch 224, inner door frame 23, inner door frame groove 231, inner door frame plate 232, inner plate notch 233, outer door frame mounting portion 24, mounting groove 241, first adjusting bolt 25, outer plate fixing block 26, second adjusting bolt 261, middle plate fixing block 27, third adjusting bolt 271, outer connecting hole 28, outer door frame roller 281, first middle connecting hole 29, first middle door frame roller 291, second middle connecting hole 292, second middle door frame roller 293, inner connecting hole 30, inner door frame roller 301, height preselection structure 3, fork lifting preselection Component 31, gantry lifting preset component 32, gantry height preset device 33, first pulley 34, first proximity switch 35, first synchronous belt 36, fork height preset device 37, second pulley 38, second proximity switch 39, second synchronous belt 40, bottom frame fixing component 4, bottom frame fixing block 41, latch 42, leg fixing hole 43, fixing seat fixing hole 44, leg connecting hole 45, bottom frame connecting block 46, fixing seat connecting hole 47, limiter 48, gantry lifting fixing plate 5, gantry hydraulic lifting rod 51, balance wheel 52, balance chain The terms such as bar 53, balance block 54, fork hydraulic lifting rod 55, chain wheel set 56, connecting chain 57, leg support 6, movable groove 61, movable roller 62, auxiliary roller 63, overhead guard 64, adjustable seat 65, operating table 66, adjustable steering wheel 67, cup holder 68, placement frame 69, cover 70, switch button 71, mast lifting installation part 8, mast height preset installation part 81, mast height preset plate 82, fork lifting fixing plate 83, fork lifting installation plate 84 are used, but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A reach-forklift, comprising a forklift body (1), legs (11) with load-bearing wheels (111) are respectively provided on both sides of the lower end of the forklift body (1), a driving assembly is provided in the middle of one end of the forklift body (1) away from the legs (11), a gantry fixing seat (12) movable along the length direction of the legs (11) is movably provided between the two legs (11), a gantry body (2) is vertically provided in the gantry fixing seat (12), a fork connecting seat (13) which is lifted up and down along the gantry body (2) and has a plurality of fork members (131) is provided on the side of the gantry body (2) away from the forklift body (1), characterized in that: The two sides of the gantry body (2) are respectively provided with outer gantry (21) connected to the gantry fixing seat (12); the outer gantry (21) has a middle gantry (22) on the side away from the gantry fixing seat (12); the middle gantry (22) has an inner gantry (23) on the side away from the outer gantry (21); the outer gantry (21), the middle gantry (22) and the inner gantry (23) are arranged in a staggered manner and plugged in with each other in sequence; a height preselection structure (3) is provided between the inner gantry (23) and the fork connecting seat (13) and / or between the middle gantry (22) and the outer gantry (21).

2. A reach forklift according to claim 1, characterized in that: The height preselection structure (3) comprises a fork lifting preset component (31) arranged between a fork connecting seat (13) and an inner mast (23) and capable of controlling the lifting height of the fork connecting seat (13), and a mast lifting preset component (32) arranged between a middle mast (22) and an outer mast (21) and capable of controlling the lifting height of the middle mast (22).

3. A reach forklift according to claim 2, characterized in that: A gantry lifting installation part (8) is provided on one side of the middle gantry (22) away from the gantry fixing seat (12); a gantry height preset installation part (81) connected to the outer gantry (21) is provided on the side of the gantry lifting installation part (8) away from the middle gantry (22); the gantry lifting preset assembly (32) includes a gantry height preset device (33) arranged on the gantry height preset installation part (81); a first pulley (34) having an encoder and a first proximity switch (35) are provided in the gantry height preset device (33); a gantry height preset plate (82) is provided between the middle gantry (22) and one end of the gantry fixing seat (12); a first synchronous belt (36) corresponding to the first pulley (34) is provided between the gantry height preset plate (82) and the gantry lifting installation part (8).

4. A reach forklift according to claim 3, characterized in that: A fork lifting preset plate (132) is provided between the fork connecting seat (13), a fork lifting fixing plate (83) is provided between the end of the inner door frame (23) away from the door frame fixing seat (12), and a fork lifting installation plate (84) is provided between the end of the inner door frame (23) close to the door frame fixing seat (12). The fork lifting preset component (31) includes a fork height preset device (37) arranged on the fork lifting preset plate (132), and a second pulley (38) with an encoder and a second proximity switch (39) are provided in the fork height preset device (37). A second synchronous belt (40) corresponding to the second pulley (38) is provided between the fork lifting fixing plate (83) and the fork lifting installation plate (84).

5. A reach forklift according to claim 1, 2, 3 or 4, characterized in that: A battery unit (14) having a battery bottom frame (141) is provided on the side of the forklift body (1) close to the mast fixing seat (12), and bottom frame fixing components (4) are respectively provided at both ends of the side of the battery bottom frame (141) away from the forklift body (1), which enable the battery unit (14) to move with the mast fixing seat (12) or enable the battery unit (14) to be fixed to the support leg (11). The bottom frame fixing component (4) includes bottom frame fixing blocks (41) arranged at both ends of the side of the battery bottom frame (141) away from the forklift body (1), one end of the bottom frame fixing block (41) is fixedly connected to the lower end of the battery bottom frame (141), and the bottom frame fixing block (41) is fixedly connected to the support leg (11) or the mast fixing seat (12) via a latch (42).

6. A reach forklift according to claim 5, characterized in that: The bottom frame fixing block (41) is provided with a leg fixing hole (43) on one side of one end away from the battery bottom frame (141), and a fixing seat fixing hole (44) on the other side; the upper end of the leg (11) is provided with a leg connecting hole (45); the lower end of the door frame fixing seat (12) is provided with a bottom frame connecting block (46), and the inner side of the bottom frame connecting block (46) is provided with a fixing seat connecting hole (47); the upper end of the latch member (42) is provided with a limiting portion (48) in the circumferential direction; the latch member (42) is arranged between the fixing seat connecting hole (47) and the fixing seat fixing hole (44), and the lower end of the limiting portion (48) contacts the upper end of the bottom frame connecting block (46); or, the latch member (42) is arranged between the leg fixing hole (43) and the leg connecting hole (45), and the lower end of the limiting portion (48) contacts the upper end of the bottom frame fixing block (41).

7. The reach forklift according to claim 4, characterized in that: The outer mast (21) is provided with an axially extending outer mast groove (211) on one side close to the middle mast (22), and the middle mast grooves (221) are respectively provided on both sides of the middle mast (22), and the inner mast grooves (231) are respectively provided at both ends of the inner mast (23), and the outer mast plate (212) is provided on one side of the outer mast groove (211), and the outer mast mounting portion (24) having a mounting groove (241) is provided on the other side, and the middle mast plates (222) are respectively provided on both sides of the middle mast groove (221), and the inner mast groove ( Inner door frame plates (231) are respectively provided on both sides, one end of the outer door frame plate (212) is provided with an outer plate notch (213) connected to the outer door frame groove (211), one end of the middle door frame plate (222) located in the inner door frame groove (231) is provided with a first middle plate notch (223), the middle door frame plate (222) located in the outer door frame groove (211) and away from the first middle plate notch (223) is provided with a second middle plate notch (224), and the inner door frame plate (232) located in the middle door frame groove (221) and close to the second middle plate notch (224) is provided with The inner plate notch (233), the middle door frame (22) is provided with a first adjusting bolt (25) on one end close to the fork lifting fixing plate (83) and away from the first middle plate notch (223), one end of the first adjusting bolt (25) axially penetrates the middle door frame plate (222) and abuts against the side of the inner door frame plate (232) located in the middle door frame groove (221), the outer door frame mounting part (24) is provided with an outer plate fixing block (26) on one end close to the outer plate notch (213), and the outer plate fixing block (26) is provided with a second adjusting bolt (261), the One end of the second adjusting bolt (261) axially penetrates the outer plate fixing block (26) and abuts against the side of the middle door frame plate (222) located in the outer door frame groove (211); a middle plate fixing block (27) is provided at one end of the middle door frame plate (222) close to the middle door frame groove (221) on one side of the outer door frame plate (212) and close to the second middle plate notch (224); a third adjusting bolt (271) is provided on the middle plate fixing block (27); one end of the third adjusting bolt (271) axially penetrates the middle plate fixing plate and abuts against the side of the outer door frame plate (212).

8. The reach forklift according to claim 7, characterized in that: The outer door frame groove (211) is provided with an outer connecting hole (28) at one end close to the outer plate notch (213), and an outer door frame roller (281) is provided in the outer connecting hole (28), and the outer side of the outer door frame roller (281) protrudes from the outer side of the outer plate notch (213). The middle door frame (22) is provided with a first middle connecting hole (29) at one end close to the middle door frame groove (221) on one side of the inner door frame (23) and close to the first middle plate notch (223), and a first middle door frame roller (291) is provided in the first middle connecting hole (29). The middle door frame (22) is provided with a middle door frame groove (221) on one side of the outer door frame (21) and close to the second middle plate notch (224). A second middle connecting hole (292) is provided at one end, a second middle door frame roller (293) is provided in the second middle connecting hole (292), the outer side of the first middle door frame roller (291) protrudes outside the first middle plate notch (223), the outer side of the second middle door frame roller (293) protrudes outside the second middle plate notch (224), and an inner connecting hole (30) is provided at one end of the inner door frame (23) close to the inner door frame groove (231) on the side of the middle door frame (22) and close to the inner plate notch (233), an inner door frame roller (301) is provided in the inner connecting hole (30), and the outer side of the inner door frame roller (301) protrudes outside the inner plate notch (233).

9. The reach forklift according to claim 8, characterized in that: The outer gantry (21) is provided with a gantry lifting fixing plate (5) located in the mounting groove (241) and corresponding to the gantry lifting mounting part (8) on one side of the end away from the gantry lifting mounting part (8), and gantry hydraulic lifting rods (51) are respectively provided on both sides between the gantry lifting mounting part (8) and the gantry lifting fixing plate (5), the upper end of the gantry hydraulic lifting rod (51) is in contact with the lower end of the gantry lifting mounting part (8), and the lower end of the gantry hydraulic lifting rod (51) is in contact with the gantry lifting fixing plate (5), and the inner sides of both ends of the gantry lifting mounting part (8) are provided with A balancing wheel (52) is provided on the balancing wheel (52), a balancing chain (53) is provided on one end of the balancing chain (53) close to the door frame fixing seat (12), a fork hydraulic lifting rod (55) is provided in the middle of the fork lifting installation plate (84), a chain wheel group (56) is provided on the end of the fork hydraulic lifting rod (55) away from the fork lifting installation plate (84), a plurality of connecting chains (57) are wound around the chain wheel group (56), and the lower end of the connecting chain (57) is fixedly connected to the fork lifting preset plate (132).

10. The reach forklift according to claim 5, characterized in that: The mast fixing seat (12) is provided with movable extension parts (15) on both sides of one end close to the forklift body (1), the movable extension parts (15) correspond to the support legs (11) and are parallel to each other, the length of the battery bottom frame (141) is greater than the length between the two movable extension parts (15), the length of the battery bottom frame (141) is less than the length between the two support legs (11), and a mast translation proximity switch (16) is provided on one side of the movable extension part (15) close to the forklift body (1). A plurality of sensing slots (17) are provided on one side of the lower end of the forklift body (1) and are distributed axially in sequence and correspond to one of the mast translation proximity switches (16); a sliding bar (18) is provided on the upper end of the leg (11) near the movable extension portion (15); a plurality of sliding blocks (19) matching the sliding bar (18) are provided on both sides of the lower end of the battery bottom frame (141); a leg bracket (6) is provided on the side of the leg (11) near the mast fixing seat (12); and the leg bracket (6) is remote from the upper end of the leg (11). An axially extending movable groove (61) is provided on the side away from the leg (11); a plurality of movable rollers (62) located in the movable groove (61) are provided on the side of the movable extension portion (15) close to the leg bracket (6); and an auxiliary roller (63) movable on the upper end of the slide bar (18) is provided on the side of the door frame fixing seat (12) close to the leg (11); an overhead guard (64) is provided on the upper end of the forklift body (1); an adjustable seat (65) is provided on the inner side of the forklift body (1); and the adjustable seat (65) A control panel (66) is provided on one side, an adjustable steering wheel (67) is provided on one side of the control panel (66), a cup holder (68) is provided at the lower end of the adjustable steering wheel (67), a placement frame (69) is provided at one end of the cup holder (68), a cover (70) is provided at one end of the control panel (66), and a switch button (71) connected to the drive assembly and capable of switching the drive assembly between 180-degree steering and 360-degree steering is provided at one end of the control panel (66) close to the cover (70).

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