Coil stock forklift
By designing a roll forklift with an arc-shaped lifting arm that works in conjunction with the paper roll, the problems of high energy consumption and easy damage to paper rolls in existing forklifts have been solved, achieving low-energy and stable paper roll handling.
Patent Information
- Application Number
- CN202520700166.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Existing forklifts consume a lot of energy and are not economical when handling gypsum board facing paper rolls. The metal rods are subjected to great force, and the existing forks are not suitable, which can easily damage the paper rolls.
Design a roll forklift that uses an arc-shaped lifting arm to cooperate with the cylindrical surface of the paper roll, lifting it on the lower arc-shaped cylindrical surface of the paper roll to distribute the weight, and using the gaps when the paper rolls are stacked to insert and pick up the rolls, avoiding excessive load on a single lifting arm, reducing structural strength requirements and overall vehicle size.
The structural strength requirements of the lifting arm were reduced, the overall size and weight of the forklift were decreased, the stability and safety of handling were improved, and damage to the paper rolls was avoided.
Smart Images
Figure CN223906474U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a forklift technical field, concretely is a roll stock forklift for carrying roll stock, especially the facing paper roll used in gypsum production. BACKGROUND
[0002] Gypsum board is generally pasted with facing paper when being processed and formed, so as to protect the gypsum board and avoid surface scratch, oil stain or damage in the transportation process. The gypsum board facing paper is usually in the shape of a cylindrical roll, and the weight of a single roll is as high as 2.5T, and the diameter is up to 1.6-1.7m. Therefore, the forklift is needed to move the roll when it is stacked or transported.
[0003] A large amount of facing paper is usually stored in the factory for standby before production, and the facing paper rolls are usually stacked to save floor space. The forklift currently used in the factory to move the gypsum board facing paper roll is usually equipped with a metal rod as a fork. When taking or placing the roll from the stack, the metal rod needs to be lifted to a high height to align the center hole of the roll, so as to be inserted and lifted. Due to the large weight and size of the gypsum board facing paper roll, in order to safely take or place the roll, the height of the forklift mast and the overall counterweight of the forklift will also be large, which further leads to high energy consumption and poor economy of the forklift. In addition, the force on the end of the metal rod is large, which has higher requirements for the strength of the metal rod itself and the end connection. The diameter of the metal rod must be at least more than 200mm to be safely applicable to the movement of the gypsum board facing paper roll.
[0004] In addition, the existing forklift with two forks is only suitable for moving hard objects, such as forklift plates, and is not suitable for moving the gypsum board facing paper roll, which is easy to damage the facing paper when taking, placing and moving. INVENTION CONTENTS
[0005] To solve the technical problems in the background art, the utility model provides a roll stock forklift for carrying roll stock, especially the facing paper roll used in gypsum production.
[0006] The technical scheme of the utility model is as follows:
[0007] A roll stock forklift for carrying roll stock, comprising a mobile vehicle body, a mast fixed to the front side of the mobile vehicle body, a lifting frame slidingly connected to the mast, at least two lifting arms extending forward from the front side of the lifting frame, the at least two lifting arms being arranged in an arc shape on the lifting frame and symmetrically arranged with respect to the longitudinal center plane of the lifting frame, the at least two lifting arms being used to abut against the cylindrical surface of the roll stock, and a lifting mechanism provided on the mobile vehicle body and used to drive the lifting frame to slide up and down.
[0008] The lifting arms are arranged to be inserted into the gap between adjacent rolls when taking or placing the roll on the roll stack.
[0009] The at least two lifting arms arranged in an arc shape are matched with the roll column to abut against the lower arc column of the roll, so that the roll gravity is shared, the single lifting arm is prevented from bearing too much weight, the structural strength requirement of the lifting arm is reduced, in addition, the position of the lifting arm corresponds to the middle and lower position of the roll, so that the lifting height of the lifting arm is reduced when the roll is stacked, and the gantry size, the overall vehicle size and weight are reduced. In addition, the arrangement form of the lifting arm is tangent to the outer contour of the roll, so that the stability of the roll during movement is ensured.
[0010] In some embodiments, the number of lifting arms is two, which are symmetrically arranged on the lower edge of the front side of the lifting frame.
[0011] The distance between the two lifting arms is less than the diameter of the roll, but greater than 7 / 10 of the diameter of the roll, so that the two lifting arms can be inserted into the gap formed between the roll to be taken and other rolls on the roll stack, which is located on both sides of the longitudinal center surface of the roll, effectively utilizing the gap generated when the roll is stacked, not only facilitating the free insertion of the lifting arm and the lifting of the roll, but also avoiding damaging the surface of the roll.
[0012] Preferably, the two lifting arms are provided with inclined abutting surfaces for tangent abutment with the roll column, so as to avoid damaging the roll surface by the lifting arm, and the inclined surfaces of the two lifting arms are oppositely arranged, so that the roll can provide opposite inclined lifting force when pressed on the two inclined surfaces, avoiding the roll from shaking when the forklift moves.
[0013] In some embodiments, the number of lifting arms is three, one of which is located on the longitudinal center surface of the lifting frame and close to the lower edge of the front side of the lifting frame, and the other two are symmetrically arranged on both sides of the longitudinal center surface of the lifting frame, and all the three lifting arms can abut against the roll column. The three lifting arms can better share the weight of the roll, and the structural strength requirement of the single lifting arm is lower, and when the roll is taken from the roll stack, the three gaps between the roll and the rolls on both sides and below can be effectively utilized, so that the taking and placing operation of the roll is more convenient and stable.
[0014] The middle lifting arm among the three lifting arms is in the shape of a round rod, and the other two lifting arms are provided with inclined abutting surfaces for tangent abutment with the roll column.
[0015] In the above scheme, the distance between the two lifting arms located on both sides of the longitudinal center surface of the lifting frame is less than the diameter of the roll, but greater than 7 / 10 of the diameter of the roll.
[0016] In some embodiments, the lifting mechanism includes a lifting oil cylinder and a lifting chain, the telescopic end of the lifting oil cylinder is provided with a pulley, the lifting chain is fixedly connected to the lifting frame and the moving vehicle body at both ends, and the middle part slides in the sliding groove of the pulley.
[0017] In some embodiments, a counterweight area is arranged at the rear side of the mobile vehicle body, the counterweight area is spaced apart from the portal, and a battery, a control module, a drive motor, and a steering drive wheel connected to the drive motor are arranged in the counterweight area.
[0018] Preferably, the roll material is a gypsum facing paper roll, and the mobile vehicle body is an AGV.
[0019] The roll material fork truck provided by the utility model is used for carrying roll material, especially gypsum facing paper rolls used in gypsum production, and at least two lifting arms arranged in an arc shape are matched with and abut against the cylindrical surface of the paper roll to be lifted on the lower arc-shaped cylindrical surface of the paper roll, so that the gravity of the paper roll is shared, the single lifting arm is prevented from bearing too much weight, the structural strength requirement of the lifting arm is reduced, and when the paper roll is taken from or placed on the paper stack, the gap formed by the stacking of the paper roll is effectively utilized to prevent the paper surface of the paper roll from being damaged in real time during taking and placing. BRIEF DESCRIPTION OF DRAWINGS
[0020] In the drawings:
[0021] Figure 1 FIG. 1 is a schematic view of a roll material fork truck according to an embodiment;
[0022] Figure 2 FIG. 2 is a schematic view of a roll material fork truck taking a paper roll from a paper stack according to the embodiment shown in FIG. 1;
[0023] Figure 3 FIG. 3 is a schematic view of a lifting frame and a lifting arm according to an embodiment;
[0024] The components represented by the reference numerals in the drawings are as follows:
[0025] 1, mobile vehicle body; 11, counterweight area; 2, portal; 3, lifting frame; 31, bracket; 32, goods shelf; 4, lifting arm; 41, inclined abutting surface; 5, lifting mechanism; 51, lifting cylinder; 52, lifting chain. DETAILED DESCRIPTION
[0026] The roll material fork truck provided by the utility model is used for carrying roll material, especially gypsum facing paper rolls used in gypsum production, and at least two lifting arms arranged in an arc shape are matched with and abut against the cylindrical surface of the paper roll to be lifted on the lower arc-shaped cylindrical surface of the paper roll, so that the gravity of the paper roll is shared, the single lifting arm is prevented from bearing too much weight, the structural strength requirement of the lifting arm is reduced, and when the paper roll is taken from or placed on the paper stack, the gap formed by the stacking of the paper roll is effectively utilized to prevent the paper surface of the paper roll from being damaged in real time during taking and placing.
[0027] For example, Figure 1As shown, the roll forklift includes a mobile body 1, a mast 2 fixed to the front of the mobile body 1, a lifting frame 3 slidably connected to the mast 2, at least two lifting arms 4 extending forward from the front of the lifting frame 3, the at least two lifting arms 4 arranged in a minor arc on the lifting frame 3 and symmetrically arranged on the left and right sides relative to the longitudinal center plane of the lifting frame 3, the at least two lifting arms 4 are used to abut against the cylindrical surface of the paper roll, and the mobile body 1 is provided with a lifting mechanism 5 for driving the lifting frame 3 to slide up and down.
[0028] At least two arc-shaped lifting arms 4 engage with the cylindrical surface of the paper roll, supporting it on the lower arc-shaped cylindrical surface. This distributes the weight of the paper roll, preventing any single lifting arm 4 from bearing too much weight and thus reducing the structural strength requirements of the lifting arm 4. Furthermore, the lifting arms 4 are positioned in the lower middle part of the paper roll, reducing the lifting height when stacking the paper rolls, thereby reducing the size of the gantry 2 and the overall vehicle size and weight. In addition, the arrangement of the lifting arms 4 matches the outer contour of the paper roll, ensuring the stability of the paper roll during movement.
[0029] In addition, a prominent feature of this application is that the lifting arm 4 is configured to be able to be inserted into the gap between adjacent paper rolls when picking up or placing paper rolls on the paper stack.
[0030] Paper rolls are stacked in a staggered manner, and because paper rolls are cylindrical, gaps will form between adjacent paper rolls, such as... Figure 2 As shown, three large gaps are formed directly below a paper roll and on both sides of its lower part. The lifting arm 4 of the roll forklift of this application is designed to insert into the above gaps, which not only facilitates the loading and unloading of paper rolls, but also prevents damage to the paper surface when the lifting arm 4 is inserted and pulled out.
[0031] The technical solution of this application will be described in detail below with reference to the specific accompanying drawings and embodiments.
[0032] Example 1
[0033] like Figure 1 As shown, in this embodiment, the number of lifting arms 4 is set to two, which are symmetrically arranged on the lower front edge of the lifting frame 3.
[0034] The distance between the two lifting arms 4 is less than the diameter of the paper roll, but greater than 7 / 10 of the diameter, so that when picking up or placing paper rolls from the stack, the two lifting arms 4 can be accurately inserted into the gaps formed between the paper roll to be picked up and other paper rolls, located on both sides of its longitudinal center plane. Figure 2 As shown, the gaps created when stacking paper rolls are effectively utilized, which not only facilitates the free insertion of the lifting arm 4 and the lifting of the paper rolls, but also avoids damage to the paper surface of the paper rolls.
[0035] The two lifting arms 4 are provided with inclined abutting surfaces 41 for tangential abutting with the paper roll column surface, so as to avoid damage to the paper roll surface by the lifting arms 4, and the two inclined surfaces of the two lifting arms 4 are oppositely arranged, so that when the paper roll is pressed between the two inclined surfaces, the lifting force of the two inclined surfaces can be provided in opposite directions to avoid shaking of the paper roll when the forklift moves the paper roll.
[0036] The opposite sides of the two lifting arms 4 are inwardly inclined at the end positions of the lifting arms 4, so as to reduce the cross-sectional area of the end of the lifting arms 4, thereby facilitating insertion of the lifting arms 4 into the gap between the paper rolls.
[0037] The ends of the two lifting arms 4 can also be provided with rubber soft heads (not shown in the figure).
[0038] In this embodiment, the lifting frame 3 includes a bracket 31 and a goods shelf 32, the bracket 31 is connected to the portal frame 2 and vertically slides, the goods shelf 32 is slidingly connected to the bracket 31 and horizontally slides, and the bracket 31 is provided with a driver (not shown in the figure) for driving the goods shelf 32 to horizontally slide.
[0039] Specifically, the portal frame 2 includes two longitudinal columns and a cross beam connecting the top ends of the two longitudinal columns, the opposite sides of the two longitudinal columns are provided with sliding grooves, and the left and right sides of the bracket 31 are each provided with two sliding wheels which slide in the sliding grooves, so that the bracket 31 is slidingly connected to the portal frame 2.
[0040] The lifting mechanism 5 includes a lifting oil cylinder 51 and a lifting chain 52, the lifting oil cylinder 51 is arranged at the lower part of the portal frame 2 and the rear side of the bracket 31, is mounted on the mobile vehicle body 1, and does not interfere with the sliding of the bracket 31. The lifting oil cylinder 51 has an upwardly extending rod, and a pulley is arranged at the end of the rod, the lifting chain 52 extends downwardly at both ends and is fixedly connected to the bracket 31 and the mobile vehicle body 1, respectively, and the middle part of the lifting chain 52 slides in the sliding groove of the pulley.
[0041] The upper edge of the goods shelf 32 is slidingly connected to the bracket 31, and the lifting arms 4 are arranged at the lower edge of the goods shelf 32, so as to reduce the lifting height of the lifting frame 3 when stacking.
[0042] The driver for driving the goods shelf 32 to horizontally slide can be any one of the existing technologies, for example, a hydraulic cylinder, and the present application does not limit the driver.
[0043] The mobile vehicle body 1 is provided with a driven wheel at the lower part near the front side, is provided with a counterweight area 11 at the rear side, and the counterweight area 11 is spaced apart from the portal frame 2. All structures of the mobile vehicle body 1 except the driven wheel are arranged in the counterweight area 11, such as a battery, a control module, a driving motor, a steering driving wheel connected to the driving motor, etc. These structures are concentrated on the side away from the lifting arms 4, and the weight of these structures is effectively used as the balance counterweight of the roll forklift, so as to improve the gravity balance effect of the forklift and the stable driving of the forklift when moving the paper roll.
[0044] Embodiment two
[0045] As Figure 3 shown, the roll forklift of the embodiment is basically the same as that of the first embodiment, except that the number of the lifting arms 4 is set to three, one of which is located on the longitudinal center plane of the lifting frame 3 and close to the lower edge of the front side of the lifting frame 3, and the other two are symmetrically arranged on the left and right of the longitudinal center plane of the lifting frame 3, and all the three lifting arms 4 can abut against the cylindrical surface of the paper roll.
[0046] The three lifting arms 4 can better share the weight of the paper roll, and the structural strength requirement of the single lifting arm 4 is lower, and when the paper roll is taken or placed on the paper stack, the three gaps between the paper roll and the paper rolls on its two sides and below can be effectively utilized, so that the taking and placing of the paper roll is more convenient and stable.
[0047] In other embodiments, the three lifting arms 4 can all be round rods.
[0048] In the embodiment, the middle lifting arm 4 is preferably a round rod, and the other two lifting arms 4 are provided with inclined abutting surfaces 41 for tangential abutment with the cylindrical surface of the paper roll. The distance between the two lifting arms 4 is less than the diameter of the paper roll, but greater than 7 / 10 of the diameter of the paper roll. The effect of the action is described in the first embodiment and will not be repeated here.
[0049] As described above, after the paper roll is stacked, three gaps will be formed around the lower part of the paper roll, and the three lifting arms 4 of the embodiment correspond to the three gaps respectively.
[0050] In addition, the middle lifting arm 4 can be detachably mounted on the shelf 32, for example, the rear end of the lifting arm 4 is provided with external threads, and the shelf 32 is provided with internal threaded holes, which are connected by threads. In this way, when the paper roll needs to be taken or placed on the ground or other plane, since there is no gap directly below the paper roll, the middle lifting arm 4 is removed to facilitate the taking and placing of the paper roll. When the paper roll needs to be taken or placed or transferred on the paper stack, the middle lifting arm 4 is mounted on the shelf 32 to share the weight of the paper roll, improve the service life of the lifting frame 3, and ensure the stability when the paper roll is moved.
[0051] In the above embodiments of the utility model, as a special preferred, the moving vehicle body 1 adopts AGV (Automated Guided Vehicle) trolley, and the automatic guiding module is further arranged in the counterweight area 11. The infrared sensor and the camera are arranged at the top rear end of the moving vehicle body 1, and a plurality of distance sensors are arranged on the shelf 32, which are used to determine the three-dimensional coordinates of the shelf 32 and the position corresponding to the paper roll, so that the lifting arm 4 is aligned with the gap around the paper roll and inserted, and the insertion distance is determined.
[0052] But in some other optional embodiments, the mobile vehicle body 1 can also be a common manually-operated trolley or a more intelligent unmanned trolley than the AGV.
[0053] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A coil fork truck for handling coils, characterized by, The mobile vehicle body (1) is provided with a portal (2) fixed on the front side, a lifting frame (3) slidingly connected to the portal (2), at least two lifting arms (4) extending forward from the front side of the lifting frame (3), the at least two lifting arms (4) arranged in an arc shape on the lifting frame (3) and symmetrically arranged relative to the longitudinal center plane of the lifting frame (3), and the lifting arms (4) used for abutting against the cylindrical surface of the roll material, and a lifting mechanism (5) provided on the mobile vehicle body (1) and used for driving the lifting frame (3) to slide up and down. The lifting arms (4) are arranged in the gap between adjacent roll materials when the roll materials are taken from or placed on the roll material stack.
2. A roll fork truck as claimed in claim 1, wherein, The number of the lifting arms (4) is two, and the two lifting arms (4) are symmetrically arranged at the lower edge of the front side of the lifting frame (3).
3. A roll fork truck as claimed in claim 2, wherein, The distance between the two lifting arms (4) is less than the diameter of the roll material but greater than 7 / 10 of the diameter of the roll material.
4. A roll fork truck as claimed in claim 3 wherein, Each of the two lifting arms (4) is provided with an inclined abutting surface (41) used for tangentially abutting against the cylindrical surface of the roll material.
5. A roll fork truck as claimed in claim 1, wherein, The number of the lifting arms (4) is three, one of the three lifting arms (4) is arranged on the longitudinal center plane of the lifting frame (3) and close to the lower edge of the front side of the lifting frame (3), and the other two lifting arms (4) are symmetrically arranged relative to the longitudinal center plane of the lifting frame (3), and the three lifting arms (4) can all abut against the cylindrical surface of the roll material.
6. A roll fork truck as claimed in claim 5 wherein, The middle lifting arm (4) of the three lifting arms (4) is in the shape of a round rod, and the other two lifting arms (4) are provided with inclined abutting surfaces (41) used for tangentially abutting against the cylindrical surface of the roll material.
7. A roll fork truck as claimed in claim 6 wherein, The distance between the two lifting arms (4) arranged on the two sides of the longitudinal center plane of the lifting frame (3) is less than the diameter of the roll material but greater than 7 / 10 of the diameter of the roll material.
8. A roll-off lift according to claim 1 wherein, The lifting mechanism (5) comprises a lifting oil cylinder (51) and a lifting chain (52), the lifting oil cylinder (51) is provided with a pulley at the telescopic end, the lifting chain (52) is fixedly connected to the lifting frame (3) and the mobile vehicle body (1) at two ends and slides in the sliding groove of the pulley at the middle part.
9. A roll-off lift according to claim 1 wherein, The rear side of the mobile vehicle body (1) is provided with a counterweight area (11) spaced apart from the portal (2), and the counterweight area (11) is provided with a storage battery, a control module, a driving motor and a steering driving wheel connected to the driving motor.
10. A roll fork truck as claimed in claim 9, wherein, The roll material is a gypsum facing paper roll, and the mobile vehicle body (1) is an AGV trolley.