CN108821192B - Forklift attachment for carrying steel members - Google Patents
Forklift attachment for carrying steel members Download PDFInfo
- Publication number
- CN108821192B CN108821192B CN201810620593.XA CN201810620593A CN108821192B CN 108821192 B CN108821192 B CN 108821192B CN 201810620593 A CN201810620593 A CN 201810620593A CN 108821192 B CN108821192 B CN 108821192B
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- Prior art keywords
- joist
- externally
- forklift
- adjusting
- hanging
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/18—Load gripping or retaining means
- B66F9/185—Load gripping or retaining means by internally expanding grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a forklift attachment for carrying steel members, which comprises a pallet fork and an externally-hung joist, wherein the externally-hung joist is provided with a hanging plate and adjustable stop blocks, the externally-hung joist is detachably connected to the pallet fork through the hanging plate, the hanging plate is fixed in the middle of the hanging plate, and the stop blocks are symmetrically arranged at two ends of the externally-hung joist. The invention is specially designed aiming at the structural characteristics of large steel frame structural members, so that a stable stress structure can be formed on the forklift attachment, the forklift attachment is easy to keep balance and is carried stably and quickly, the externally hung joists can be conveniently combined with the pallet forks of a common forklift, the forklift is endowed with good universality, the common forklift can smoothly carry out carrying operation of the large steel frame structural members, the working difficulty can be reduced during carrying, and the working efficiency is improved.
Description
Technical Field
The invention relates to a forklift accessory, in particular to a forklift accessory for carrying steel members.
Background
The forklift attachment is also called a multi-device, and is a tool for realizing multiple purposes of a forklift. At present, no special accessory capable of meeting the requirement of convenient and rapid carrying of large-scale steel frame structural members exists in the market, fork trucks which are commonly used are required to carry the large-scale steel frame structural members, different tonnage and different wheelbases are required to be selected according to the tonnage of the steel frame structural members and the difference of threshold widths, the limiting conditions are multiple, the universality is poor, the operation difficulty of a driver is high, and the large-scale steel frame structural members cannot be conveniently and efficiently carried. Therefore, a forklift attachment capable of better meeting the carrying requirement of the steel frame structural member is urgently needed to be put on the market. The invention with the publication number of CN107416733A is specially favorable for 2017, 12 and 1, and discloses a forklift attachment which comprises an installation frame, wherein a pallet fork is arranged at the bottom of the front face of the installation frame, a top plate is arranged at the top of the front face of the installation frame, the top plate is installed on the installation frame through a lifting frame, the lifting frame is controlled by a lifting cylinder, a baffle plate is arranged in front of the installation frame, the baffle plate is connected with the installation frame through a rotating frame and can rotate around the installation frame, the width of the top plate is matched with the distance from the installation frame to the baffle plate, a plurality of first through grooves and a plurality of second through grooves are formed in the baffle plate, the cross sectional area of the first through grooves is larger than that of the second through grooves, the number of the first through grooves is nine. This fork truck accessory simple structure, design scientific and reasonable through increasing roof and baffle, makes fork truck goods difficult for dropping in handling, also conveniently carries pipy goods, and is very practical. However, the invention does not have a special structural design for the transportation requirement of the steel frame structural member, so that the steel frame structural member cannot be transported conveniently and efficiently.
Disclosure of Invention
The invention provides a forklift attachment for steel member transportation, which is suitable for the structural characteristics of a steel frame structure and can better meet the transportation requirement of the steel frame structure, in order to overcome the defect that the common forklift is not provided with a special attachment suitable for the transportation of large steel frame structures and cannot conveniently and efficiently transport the steel frame structures.
The technical scheme of the invention is as follows: the forklift attachment for steel member transportation comprises a pallet fork and an externally-hung joist, wherein a hanging plate and an adjustable stop dog are arranged on the externally-hung joist, the externally-hung joist is detachably connected to the pallet fork through the hanging plate, the hanging plate is fixed in the middle of the externally-hung joist, and the stop dog is symmetrically arranged at two ends of the externally-hung joist. The large-scale steel frame structure is large in size, the number of the hollow parts of the structure is large, and if the pallet fork is directly used for lifting, a proper supporting point is often difficult to find. When the forklift attachment is used for carrying a steel frame structure, the fork is additionally provided with the externally-hung joists, the length of a front end supporting surface of the forklift attachment is greatly expanded, the steel frame structure is supported more easily, the stop blocks at the two ends of the externally-hung joists are respectively stopped at the two sides of the steel frame structure during working and play a role in limiting, after the forklift lifts the steel frame structure, the rear part of the steel frame structure can lean on the main body of the forklift attachment, so that the bottom, the two sides and the rear part of the steel frame structure can be reliably supported, a stable stress structure is formed, balance is easy to keep, and the forklift attachment is further carried stably and quickly.
Preferably, the forklift attachment further comprises a stop block adjusting motor, an adjusting screw and a pair of adjusting arms, wherein the stop block adjusting motor is fixedly arranged on the external joist, the adjusting screw is rotatably connected to the external joist, the adjusting screw is in transmission connection with the output end of the adjusting motor, an L-shaped stop block base is fixedly arranged at the bottom of the stop block, a sliding groove is formed in the inner side of the external joist, the cross section of the sliding groove is L-shaped, the sliding groove comprises an outer sliding groove and an inner sliding groove, a stop block passing groove is formed in the upper groove wall of the outer sliding groove, the inner sliding groove is located at the bottom of the outer sliding groove, the bottom end of the stop block base is in sliding embedded in the inner sliding groove in a matched mode, the top end of the stop block base penetrates through the stop block passing groove to be fixedly. The L-shaped stop block base is limited by the inner sliding groove and cannot slide axially due to lateral movement, and meanwhile, the stop block base can be limited to be separated from the sliding groove through the groove, so that the stop block base can be ensured to be driven by the stop block base to be reliably connected with the external joist in a sliding manner. When the stop adjusting motor operates, the stop adjusting screw rod is driven to rotate, then the moving ring is driven to move axially to be far away from or close to the externally-hung joist, the two adjusting arms are retracted and extended, the stop base is driven to move close to or away from the externally-hung joist, the distance between the stops is changed, the stop adjusting motor can better adapt to the limiting and positioning requirements of steel frame structural members with different widths, and the operation applicability and safety of the forklift attachment are improved.
Preferably, a transmission box is fixedly arranged in the middle of the inner side of the external joist, one end of an adjusting screw is rotatably connected to the external joist, the other end of the adjusting screw is rotatably connected to the transmission box, the inner surface of the bottom of the transmission box is a plane, one side of the periphery of the moving ring, which faces the inner surface of the bottom of the transmission box, is also a plane, the plane on the periphery of the moving ring is in sliding fit with the inner surface of the bottom of the transmission box, adjusting arm windows are arranged on two sides of the transmission box, and the two adjusting arms respectively penetrate through the two adjusting. The transmission box can provide the installation support for adjusting screw to ensure that adjusting screw's rotation can be converted into the axial motion of shifting collar, make the dog adjust the transmission structure of motor, adjusting screw and regulating arm more reliable and stable.
Preferably, the stop adjusting motor is positioned outside the transmission box, and the output end of the stop adjusting motor is in transmission connection with the adjusting screw rod through the gear transmission mechanism. Therefore, the stop block adjusting motor, the adjusting screw and the adjusting arm can be installed relatively dispersedly, and the situation that the occupied space is large and the stop block adjusting motor cannot be arranged on the externally hung joist with limited local size due to excessive concentration is avoided.
Preferably, a wiring groove is formed in the bottom of the pallet fork, a motor power supply cable is buried in the wiring groove, a cable connector is arranged at the end of the motor power supply cable, and a power supply interface capable of being in butt joint with the cable connector is arranged on the stop block adjusting motor. The external joist is a detachable part of the forklift, and after the external joist is installed for special operation purposes, the stop block adjusting motor can be quickly connected into a control system of the forklift through the butt joint of the cable connector and the power supply interface.
Preferably, the hanging plate is two at least and each hanging plate is parallel to be aligned, has set firmly the strengthening rib between the hanging plate. The hanging plate is arranged on the external joist and serves as a connecting structure of the external joist and the pallet fork, damage to the external joist body can be reduced while connection is achieved, and the plurality of hanging plates are combined for use, so that structural strength is guaranteed, and weight can be effectively reduced. The reinforcing ribs can connect the hanging plates into a whole to support each other, so that the overall strength of the hanging plates and the external hanging joists is enhanced, and the operation safety of the forklift is improved.
Preferably, the hanging plate is provided with two fork insertion grooves corresponding to the forks, one fork insertion groove is matched with the width of the fork, and the width of the other fork insertion groove is larger than the width of the fork insertion groove. The fork is inserted into the fork slot to realize the connection of the externally hung joist and the fork, and the connection form of the insertion connection is simple in structure and convenient to operate. A fork slot and fork adaptation can ensure that external joist and fork form inseparabler cooperation, avoid loose cooperation to lead to goods piece handling to take place to rock, vibrate and even unbalance, tumble, fall to ensure operation safety. The width of the other fork slot is larger than that of the fork, so that the fork inserted into the fork slot has a room for transverse movement, the relative position of the fork and the externally-hung joist can be changed, or the distance between the two forks can be changed, the in-and-out matching direction of the forklift when the large steel frame structural member is carried can be better adjusted, interference is avoided, or the supporting point of the fork on the externally-hung joist is adjusted according to the size and the gravity center position of the steel frame structural member, and the externally-hung joist is ensured to more uniformly and stably support the goods.
The invention has the beneficial effects that:
the carrying problem of the large-scale steel frame structural member is effectively solved, and the configuration of the forklift attachment is perfected. The invention is specially designed aiming at the structural characteristics of large steel frame structural parts, can form a stable stress structure on the forklift attachment, is easy to keep balance, and is further carried stably and quickly.
Has good universality. The externally hung joist can be conveniently combined with the pallet fork of a common forklift, so that the forklift is endowed with good universality, and the common forklift can also smoothly carry large steel frame structural members.
The operation is simple, the working difficulty is reduced, and the production efficiency is improved. The invention can be quickly and additionally arranged on a common forklift, endows the common forklift with the function of conveniently and efficiently carrying and transporting large-scale steel frame structural members, can reduce the working difficulty and improve the working efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the present invention in cooperation with a steel frame structure;
FIG. 3 is a schematic view of an initial state of a forklift equipped with the present invention entering a steel frame structure;
FIG. 4 is a schematic view of an intermediate state when the truck of the present invention is deployed into a steel frame structure;
FIG. 5 is a schematic view of a forklift configured according to the present invention after entering a steel frame structure;
FIG. 6 is a schematic structural view of the inside of an externally hung joist according to the present invention;
FIG. 7 is a top view of the externally hung joist of the present invention with the drive cassette removed.
In the figure, 1-external joist, 2-hanging plate, 3-stop block, 4-reinforcing rib, 5-pallet fork, 6-pallet fork slot, 7-stop block adjusting motor, 8-adjusting screw rod, 9-adjusting arm, 10-moving ring, 11-sliding groove, 12-stop block through groove, 13-transmission box, 14-steel component and 15-stop block base.
Detailed Description
The invention is further illustrated by the following specific embodiments in conjunction with the accompanying drawings.
Example (b):
as shown in fig. 1, 2, 6 and 7, the forklift attachment for steel member transportation comprises a pair of forks 5, an externally-hung joist 1, a stop block adjusting motor 7, an adjusting screw 8 and a pair of adjusting arms 9, wherein the externally-hung joist 1 is provided with a hanging plate 2 and a stop block 3, the externally-hung joist 1 is detachably connected to the forks 5 through the hanging plate 2, the hanging plate 2 is fixed in the middle of the externally-hung joist 1, the stop blocks 3 are symmetrically arranged at two ends of the externally-hung joist 1, and the stop block adjusting motor 7 is fixed on the externally-hung joist 1. The link plate 2 is two and each link plate 2 parallel alignment, has set firmly strengthening rib 4 between the link plate 2. Two fork slots 6 corresponding to the forks 5 are arranged on the hanging plate 2, the fork slots 6 penetrate through the front and the back of the hanging plate 2, one fork slot 6 is matched with the width of the fork 5, and the width of the other fork slot 6 is larger than the width of the fork slot 6. The stop adjusting motor 7 is fixedly arranged on the external joist 1, the adjusting screw 8 is rotatably connected on the external joist 1, the adjusting screw 8 is simultaneously in transmission connection with the output end of the adjusting motor 7, an L-shaped stop base 15 is fixed at the bottom of the stop 3, a sliding groove 11 is arranged on the inner side of the external joist 1, the cross section of the sliding groove 11 is L-shaped, the sliding groove 11 comprises an outer sliding groove and an inner sliding groove, a stop passing groove 12 is arranged on the upper groove wall of the outer sliding groove, the inner sliding groove is positioned at the groove bottom of the outer sliding groove, the bottom end of the stop base 15 is slidably embedded in the inner sliding groove, the top end of the stop base 15 penetrates through the stop passing groove 12 to be fixedly connected with the stop 3 through a bolt, a moving ring 10 is in threaded connection with the adjusting screw 8. A transmission box 13 is fixed in the middle of the inner side of an external joist 1, the transmission box 13 is cuboid, one end of an adjusting screw 8 is rotatably connected to the external joist 1, the other end of the adjusting screw 8 is rotatably connected to the outer end face of the transmission box 13, the inner surface of the bottom of the transmission box 13 is a plane, one side of the periphery of a movable ring 10, which faces the bottom of the transmission box 13, is also a plane, namely the cross section of the movable ring 10 is arched, the arched arc is a major arc, the plane of the periphery of the movable ring 10 is in sliding fit with the inner surface of the bottom of the transmission box 13, two sides of the transmission box 13 are provided with adjusting arm windows, and two adjusting arms 9 respectively penetrate. Dog accommodate motor 7 is located transmission box 13 below, and dog accommodate motor 7's output key-type connection driving gear, an adjusting screw 8 go up a key connection driven gear, and it has an opening to open on the 13 bottom surfaces of transmission box, makes main, driven gear can mesh, and dog accommodate motor 7, adjusting screw 8 realize the transmission through the gear drive who main, driven gear constitutes and connect. A wiring groove is formed in the bottom of the fork 5, a motor power supply cable is embedded in the wiring groove, the motor power supply cable is connected into a control system of the forklift, a cable connector is arranged at the end of the motor power supply cable, and a power supply interface capable of being in butt joint with the cable connector is arranged on the stop block adjusting motor 7.
If a steel member 14 which is integrally a hollow cube is carried, firstly, the forklift is operated to move, a pallet fork 5 is inserted into a pallet fork slot 6 of a hanging plate 2, the externally-hung joist 1 is lifted, a power supply cable of a motor is butted with a power supply interface of a stop block adjusting motor 7, the stop block adjusting motor 7 is controlled by a relevant button of a forklift control system, an adjusting screw rod 8 is driven to rotate, then, a moving ring 10 is driven to move axially, the externally-hung joist 1 is far away from and close to the externally-hung joist 1, two adjusting arms 9 are in a limit state, the adjusting arms 9 can pull a stop block base 15 to be close to the two stop blocks 3, and interference between the two sides of the steel member. Then adjusting the distance between the two forks 5 to ensure that the externally-hung joist 1 moves rightwards as much as possible so as to avoid the interference between the left end of the externally-hung joist 1 and the steel member 14 when the forklift turns leftwards and enters the steel member 14, as shown in figure 3; the forklift runs obliquely from left to right, the head of the forklift firstly enters the steel member 14, when the left end of the externally-hung joist 1 completely enters, the fork 5 is moved leftwards, the externally-hung joist 1 is enabled to translate leftwards, and the right end of the externally-hung joist 1 can avoid the steel member 14, and then the forklift is driven to integrally run into the steel member 14, as shown in fig. 4; finally, the pallet fork 5 is adjusted leftwards and rightwards to enable the position of the externally hung joist 1 to correspond to that of the steel member 14, then the distance between the two end stop blocks 3 is adjusted according to the width of the steel member 14, the stop block adjusting motor 7 is started again to drive the adjusting screw 8 to rotate, then the moving ring 10 is driven to approach the externally hung joist 1, at the moment, the two adjusting arms 9 are opened to push the two stop blocks 3 to move towards the two ends respectively until the outer sides of the stop blocks 3 abut against the two sides of the steel member 14, and the structure is shown in fig. 5; the fork truck is then driven forward, which pushes the steel member 14 to move.
Claims (6)
1. A forklift attachment for transporting steel members comprises a pallet fork (5) and is characterized by further comprising an externally-hanging joist (1), wherein a hanging plate (2) and an adjustable stop dog (3) are arranged on the externally-hanging joist (1), the externally-hanging joist (1) is detachably connected to the pallet fork (5) through the hanging plate (2), the hanging plate (2) is fixed in the middle of the externally-hanging joist (1), the stop dogs (3) are symmetrically arranged at two ends of the externally-hanging joist (1), the forklift attachment further comprises a stop dog adjusting motor (7), an adjusting screw rod (8) and a pair of adjusting arms (9), the stop dog adjusting motor (7) is fixedly arranged on the externally-hanging joist (1), the adjusting screw rod (8) is rotatably connected to the externally-hanging joist (1), the adjusting screw rod (8) is in transmission connection with an output end of the adjusting motor (7), an L-shaped base (15) is fixedly arranged at the bottom of the stop dog (3), a sliding groove (11) is arranged, the cross section of spout (11) is L shape, spout (11) are including outer spout and interior spout, it crosses groove (12) to be equipped with the dog on the last cell wall of outer spout, interior spout is located the tank bottom of outer spout, dog base (15) bottom adaptation slides and inlays in interior spout, dog base (15) top is passed dog and is crossed groove (12) and link firmly with dog (3), threaded connection shift ring (10) is gone up in adjusting screw (8), regulating arm (9) both ends articulate respectively on dog base (15) and shift ring (10).
2. The forklift attachment of claim 1, wherein a transmission box (13) is fixedly arranged in the middle of the inner side of the external joist (1), one end of an adjusting screw (8) is rotatably connected to the external joist (1), the other end of the adjusting screw (8) is rotatably connected to the transmission box (13), the inner surface of the bottom of the transmission box (13) is a plane, one side of the periphery of the moving ring (10) facing the bottom of the transmission box (13) is also a plane, the plane of the periphery of the moving ring (10) is in sliding fit with the inner surface of the bottom of the transmission box (13), two sides of the transmission box (13) are provided with adjusting arm windows, and two adjusting arms (9) respectively penetrate through the two adjusting arm windows.
3. The forklift attachment of claim 1, wherein the stop adjustment motor (7) is located outside the transmission box (13), and an output end of the stop adjustment motor (7) is in transmission connection with the adjustment screw (8) through a gear transmission mechanism.
4. The forklift attachment according to claim 1, wherein a cabling channel is provided at the bottom of the fork (5), a motor power supply cable is embedded in the cabling channel, a cable connector is provided at the end of the motor power supply cable, and a power supply interface capable of being butted with the cable connector is provided on the stopper adjusting motor (7).
5. The forklift attachment of any one of claims 1 to 4, wherein there are at least two hanging plates (2), and each hanging plate (2) is aligned in parallel, and reinforcing ribs (4) are fixedly arranged between the hanging plates (2).
6. The forklift attachment of any one of claims 1 to 4, wherein the hitch plate (2) is provided with two fork insertion slots (6) corresponding to the forks (5), one fork insertion slot (6) being adapted to the width of the fork (5), the other fork insertion slot (6) having a width greater than the width of the fork insertion slot (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810620593.XA CN108821192B (en) | 2018-06-15 | 2018-06-15 | Forklift attachment for carrying steel members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810620593.XA CN108821192B (en) | 2018-06-15 | 2018-06-15 | Forklift attachment for carrying steel members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108821192A CN108821192A (en) | 2018-11-16 |
| CN108821192B true CN108821192B (en) | 2019-12-31 |
Family
ID=64142222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810620593.XA Active CN108821192B (en) | 2018-06-15 | 2018-06-15 | Forklift attachment for carrying steel members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108821192B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639181A (en) * | 1983-11-28 | 1987-01-27 | Tsubakimoto Chain Co. | Pallet exchange device |
| FR2598697A1 (en) * | 1986-05-16 | 1987-11-20 | Forgeas Dominique | Shield system allowing the dual use of hooks and forks on a truck for handling meat. |
| CN203222452U (en) * | 2013-03-12 | 2013-10-02 | 山东山推机械有限公司 | Transport spreader for forklift |
| CN207002145U (en) * | 2017-07-13 | 2018-02-13 | 安徽省路港工程有限责任公司 | A kind of prefabricated guardrail can adjust transport pallet |
-
2018
- 2018-06-15 CN CN201810620593.XA patent/CN108821192B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639181A (en) * | 1983-11-28 | 1987-01-27 | Tsubakimoto Chain Co. | Pallet exchange device |
| FR2598697A1 (en) * | 1986-05-16 | 1987-11-20 | Forgeas Dominique | Shield system allowing the dual use of hooks and forks on a truck for handling meat. |
| CN203222452U (en) * | 2013-03-12 | 2013-10-02 | 山东山推机械有限公司 | Transport spreader for forklift |
| CN207002145U (en) * | 2017-07-13 | 2018-02-13 | 安徽省路港工程有限责任公司 | A kind of prefabricated guardrail can adjust transport pallet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108821192A (en) | 2018-11-16 |
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