CN111232890A - Hoisting and lifting gantry system of electric forklift - Google Patents
Hoisting and lifting gantry system of electric forklift Download PDFInfo
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- CN111232890A CN111232890A CN202010088868.7A CN202010088868A CN111232890A CN 111232890 A CN111232890 A CN 111232890A CN 202010088868 A CN202010088868 A CN 202010088868A CN 111232890 A CN111232890 A CN 111232890A
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- pulley
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- wire rope
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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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
- B66D1/39—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of axially-movable drums or barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses an electric forklift hoisting and lifting portal frame system, which belongs to the technical field of forklift devices and comprises a portal frame, a double-output-shaft motor, a limiting device, two brakes, two self-moving rollers, an L-shaped roller base, two fixed pulleys, two guide pulleys, four movable pulleys and a steel wire rope, wherein the four movable pulleys and the steel wire rope are arranged on a pallet fork; two ends of the steel wire ropes are fixed on the outer sides of the roller A and the roller B, and the steel wire ropes are wound with the movable pulleys, the fixed pulleys and the guide pulleys to form four groups of fixed-movable pulley structures; the steel wire rope is stressed, the roller rotates to wind the steel wire rope, and the fork is driven to ascend through the pulley structure. The lifting gantry system is simple in structure, low in production and maintenance cost and wide in gantry view, lifting efficiency and precision are improved, and service life is long.
Description
Technical Field
The invention relates to the technical field of forklift working devices, in particular to a hoisting and lifting gantry system of an electric forklift.
Background
The electric forklift has the characteristics of no tail gas emission, environmental protection, low noise, convenient operation and the like, so that the electric forklift becomes a great trend for the development of the future forklift industry. Therefore, the design of the gantry system which is low in production cost, high in lifting precision, long in service life and wide in working view has important significance for application and development of the electric forklift.
At present, a hydraulic cylinder is generally adopted by an electric forklift as a lifting mechanism of a gantry system, and the defects of low efficiency, easy oil pollution generation and high production cost caused by descending overflow loss of a working device mainly exist. At present, a patent named as a forklift gantry system with steel wire rope fully-free lifting and motor-driven tilting (patent application number: 201510604429.6) designed for an electric forklift gantry system replaces hydraulic oil cylinder lifting with pulley and steel wire rope lifting, but only two steel wire ropes are stressed to lift a fork, the steel wire ropes are far away in conveying distance and are easy to generate elastic deformation, and therefore the fork lifting precision is not high.
The multi-group fixed-movable pulley structure is used for lifting, the stress of a single steel wire rope can be effectively reduced, and therefore the problem that the lifting precision of the fork is influenced due to the elastic deformation of the steel wire rope is solved. For example, in a liftable hand-push type carrier (patent application number: 200710135442.7), a plurality of groups of fixed-movable pulley structures are adopted to realize the lifting of a pallet fork, but a wire guide mechanism is not arranged on a steel wire rope winding device, so that the steel wire ropes are easy to overlap when being wound, and the service life of the steel wire ropes is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the hoisting and lifting gantry system of the electric forklift, which lifts by utilizing a plurality of groups of fixed-movable pulley structures, and has the advantages of simple system structure, low production and maintenance cost, wide gantry view field, improved lifting efficiency and precision of the gantry system and long service life by skillful design of the structure.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an electric fork truck hoist lifting gantry system which characterized in that: the automatic pallet fork comprises a portal frame, a motor with double output shafts, a limiting device, two brakes, two self-moving rollers, two L-shaped roller bases, two fixed pulleys, two guide pulleys, four movable pulleys and a steel wire rope, wherein the four movable pulleys are arranged on the pallet fork; a motor is arranged in the middle above the top of the gantry, a left output shaft and a right output shaft of the motor are respectively connected with a brake B and a brake A, and the shaft end of the output shaft of the motor is of a spline structure; an L-shaped roller base B and an L-shaped roller base A with threaded shafts are respectively arranged on the left side and the right side above the top of the portal frame, and the threaded shafts and the output shaft of the motor are on the same axis; one side of the through holes in the roller A and the roller B is of a spline structure and is matched with a spline at the end part of an output shaft of the motor, and the other side of the through holes is provided with threaded holes and is matched with a threaded shaft on a base of the roller; a fixed pulley B, a guide pulley A and a fixed pulley A are respectively arranged below the top of the portal from left to right, the guide pulley B and the guide pulley A are respectively arranged at positions close to the left side and the right side of the portal, and the direction is vertical to the direction of a portal guide rail; the fixed pulley B and the fixed pulley A are respectively arranged at positions close to the left side and the right side of the portal frame, and the direction of the fixed pulley B and the fixed pulley A is parallel to the direction of the portal frame guide rail; a movable pulley B, a movable pulley C, a movable pulley D and a movable pulley A are respectively arranged above the fork from left to right, the movable pulleys B and the movable pulleys C are arranged in a group at the left side of the fork, the direction of the movable pulleys B is parallel to the direction of a gantry guide rail, the movable pulleys D and the movable pulleys A are arranged in a group at the right side of the fork, and the direction of the movable pulleys D is parallel to the direction of the gantry guide rail; two ends of the steel wire ropes are fixed on the outer sides of the roller A and the roller B, and the steel wire ropes are wound with the movable pulleys, the fixed pulleys and the guide pulleys to form four groups of fixed-movable pulley structures; the steel wire rope is stressed, the roller rotates to wind the steel wire rope, and the fork is driven to ascend through the pulley structure.
The technical scheme of the invention is further improved as follows: the limiting device comprises a limiting switch arranged on the upper right of the portal frame and a limiting block arranged on the right side of the fork.
The technical scheme of the invention is further improved as follows: the thread pitch of the thread matched with the roller base is the distance of the diameter of one steel wire rope.
The technical scheme of the invention is further improved as follows: the steel wire rope is wound with the movable pulley, the fixed pulley and the guide pulley to form four groups of fixed-movable pulley structures, and the specific winding mode is as follows: the steel wire ropes are downward wound around the movable pulley B and the movable pulley A respectively and upward, the steel wire ropes are upward wound around the fixed pulley B and the fixed pulley A respectively and downward, the steel wire ropes are downward wound around the movable pulley C and the movable pulley D respectively and upward, the steel wire ropes are upward wound around the guide pulley B and then connected with the guide pulley A respectively, and four groups of fixed-movable pulley structures are formed by the steel wire ropes.
The technical scheme of the invention is further improved as follows: the fixed pulley A on one side of the portal is positioned on the neutral plane of the movable pulley D and the movable pulley A on one side of the fork, and the fixed pulley B on the other side of the portal is also positioned on the neutral plane of the movable pulley B and the movable pulley C; the guide pulley B and the outer side tangent point of the steel wire rope are on the same vertical line with the inner side movable pulley C on one side of the fork, and the guide pulley A and the outer side tangent point of the steel wire rope are on the same vertical line with the inner side movable pulley D on the other side of the fork.
The technical scheme of the invention is further improved as follows: and the pulleys of the fixed pulley, the movable pulley and the guide pulley are all U-shaped pulley grooves.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. the gantry hoisting device adopts the steel wire rope hoisting lifting to replace a generally adopted hydraulic cylinder as a lifting mechanism, does not need a complex hydraulic oil circuit, does not produce oil pollution, has a simple structure, and can greatly reduce the production and maintenance cost of the gantry system.
2. The threads are arranged in the roller and matched with the threaded shaft on the base of the roller, the roller can move in a self-adaptive manner when rotating, so that a steel wire rope is not overlapped when being wound on the roller, the fixed pulleys on the left side and the right side of the portal are respectively positioned on the median planes of the left movable pulley and the right movable pulley of the fork, the tangent points of the left guide pulley and the right guide pulley of the portal and the outer movable pulley of the steel wire rope are respectively positioned on the same vertical line with the movable pulley on the inner side of the fork, the pulley wheel groove is U-shaped, the steel wire rope does not rub with the wall of the pulley wheel groove when.
3. The steel wire ropes wind around the roller, then wind around the movable pulleys on the outer side of the fork downwards, wind around the fixed pulleys of the portal upwards, wind around the movable pulleys on the inner side of the fork downwards, wind around the guide pulleys of the portal upwards and then are connected, four groups of fixed-movable pulley structures are formed by the fixed-movable pulley structures, and 8 steel wire ropes are stressed to lift the fork, so that the stress of a single steel wire rope is reduced, the problem that the elastic deformation is easily generated due to the overlarge stress of the steel wire rope is effectively solved, and the lifting precision of the fork is.
4. The pulley structures of the invention are uniformly distributed on the left side and the right side of the portal frame, thereby ensuring wide view in the middle of the portal frame and effectively improving the lifting precision.
Drawings
FIG. 1 is a schematic view of the overall structure of the portal frame of the present invention;
FIG. 2 is a rear view of the door frame of the present invention in an initial state;
FIG. 3 is a rear view of the gantry of the present invention in a raised limit condition;
FIG. 4 is a schematic view of the drum in accordance with the present invention in cooperation with the motor shaft end and the drum shaft;
FIG. 5 is a schematic view of the pulley position relationship of the present invention;
FIG. 6 is a schematic view of the fork construction of the present invention;
FIG. 7 is a schematic view of the wire rope connection of the present invention;
FIG. 8 is a schematic view of the sheave groove of the present invention.
The device comprises a motor 1, a motor 2, a brake A, a brake 3, a roller A, a brake 4, an L-shaped roller base A, a brake B, a brake C, a brake D, a brake B, a brake C, a brake B, a brake C, a.
Detailed Description
The present invention will be further described in detail with reference to FIGS. 1 to 8 and the following embodiments:
as shown in fig. 1 and 2, an electric forklift hoisting and lifting gantry system comprises a gantry 9, an electric motor 1 with double output shafts, a limiting device, two brakes, two self-moving rollers, two L-shaped roller bases, two fixed pulleys, two guide pulleys, four movable pulleys mounted on a pallet fork 12 and a steel wire rope 8; the middle position above the top of the portal frame 9 is provided with the motor 1, the left output shaft and the right output shaft of the motor 1 are respectively connected with a brake B15 and a brake A2, and the shaft end of the output shaft 18 of the motor is in a spline structure; an L-shaped roller base B16 and an L-shaped roller base A4 with a threaded shaft 19 are respectively arranged at the left side and the right side above the top of the portal frame 9, as shown in figure 4, the threaded shaft 19 and the motor output shaft 18 are on the same axis; one side of the through holes in the roller A3 and the roller B17 is in a spline structure and is in spline fit with the end part of the output shaft 18 of the motor, and the other side of the through holes is in a threaded hole and is in fit with a threaded shaft 19 on the base of the roller; a fixed pulley B14, a guide pulley B13, a guide pulley A6 and a fixed pulley A5 are respectively arranged below the top of the gantry 9 from left to right, the guide pulley B13 and the guide pulley A6 are respectively arranged at positions close to the left side and the right side of the gantry 9, and the direction is perpendicular to the direction of a gantry guide rail; the fixed pulley B14 and the fixed pulley A5 are respectively arranged at positions close to the left side and the right side of the gantry 9, and the direction is parallel to the direction of a gantry guide rail; a movable pulley B20, a movable pulley C21, a movable pulley D22 and a movable pulley A10 are respectively arranged above the pallet fork 12 from left to right, the movable pulleys B20 and the movable pulleys C21 are in a group and are arranged on the left side of the pallet fork 12, the direction of the movable pulleys is parallel to the direction of a gantry guide rail, and the movable pulleys D22 and the movable pulleys A10 are in a group and are arranged on the right side of the pallet fork 12, and the direction of the movable pulleys is parallel to the direction of the gantry guide rail; two ends of the steel wire rope 8 are fixed on the outer sides of the roller A3 and the roller B17, and the steel wire rope 8 is wound with the movable pulley, the fixed pulley and the guide pulley to form four groups of fixed-movable pulley structures; and 8 steel wire ropes are stressed, the drum rotates to wind the steel wire ropes 8, and the fork 12 is driven to rise along the gantry guide rail through the pulley structure.
As shown in fig. 3, the limiting device comprises a limiting switch 7 arranged on the upper right of the door frame 9 and a limiting block 11 arranged on the right side of the fork 12. When the door frame rises to the ascending limit, the limit switch 7 is triggered by the limit block 11, the motor 1 stops working, and the brake A2 and the brake B15 work, so that the fork 12 stops moving.
The thread pitch of the thread matched with the roller base is the distance of the diameter of one steel wire rope 8. When the motor 1 corotation, every rotation a week, the cylinder moves the distance of a wire rope 8 diameter to the outside along the threaded shaft 19 on the cylinder base, when the motor 1 reversal, every rotation a week, the cylinder moves the distance of a wire rope 8 diameter to the inside along the threaded shaft 19 on the cylinder base, can not take place to overlap when guaranteeing that wire rope 8 twines on the cylinder, and wire rope 8 and cylinder tangential point all the time with the fork 12 outside movable pulley on same plumb line, wire rope 8 and fork 12 outside movable pulley cell wall do not produce the friction.
As shown in fig. 5, 6 and 7, the steel wire rope 8 is wound around the movable pulley, the fixed pulley and the guide pulley to form four groups of fixed-movable pulley structures, and the specific winding manner is as follows: the steel wire rope 8 downwards winds around the movable pulley B20 and the movable pulley A10 respectively and upwards, the steel wire rope 8 upwards winds around the fixed pulley B14 and the fixed pulley A5 respectively and downwards, the steel wire rope 8 downwards winds around the movable pulley C21 and the movable pulley D22 respectively and upwards, the steel wire rope 8 upwards winds around the guide pulley B13 and the guide pulley A6 respectively and then is connected, and four groups of fixed-movable pulley structures are formed in a conformal mode.
The fixed pulley A5 on one side of the door frame 9 is positioned on the neutral plane Y of the movable pulley D22 and the movable pulley A10 on one side of the fork 12, and the fixed pulley B14 on the other side of the door frame 9 is also positioned on the neutral plane of the movable pulley B20 and the movable pulley C21; the guide pulley B13 is on the same vertical line Z with the outer tangent point of the wire rope 8 and the inner movable pulley C21 on one side of the fork 12, and the guide pulley a6 is on the same vertical line with the outer tangent point of the wire rope 8 and the inner movable pulley D22 on the other side of the fork 12. And the pulleys of the fixed pulley, the movable pulley and the guide pulley are all U-shaped pulley grooves. When the fork 12 is lifted, the steel wire rope 8 does not generate friction with the wall of the pulley groove.
Specifically, as shown in fig. 2, an electric motor 1 with two output shafts is installed at the middle position above the top of the gantry 9, the left and right output shafts of the electric motor 1 are respectively connected with a brake B15 and a brake a2, the shaft end of the output shaft 18 of the electric motor is in a spline structure, an L-shaped drum base B16 and an L-shaped drum base a4 which are provided with a threaded shaft 19 are respectively installed at the left and right sides above the top of the gantry 9, and the threaded shaft 19 and the output shaft 18 of the electric motor are on the same axis; one side of the through holes in the roller A3 and the roller B17 is in a spline structure and is in spline fit with the shaft end of the output shaft 18 of the motor, the other side of the through holes is provided with a threaded hole and is in fit with a threaded shaft 19 on the base of the roller, and the thread pitch of the threads is the distance of the diameter of one steel wire rope 8; a fixed pulley B14, a guide pulley B13, a guide pulley A6 and a fixed pulley A5 are respectively arranged below the top of the portal 9 from left to right, wherein the guide pulley B13 is arranged at a position close to the left side of the portal and is vertical to the direction of a portal guide rail, the fixed pulley B14 is arranged at a position close to the left side of the portal and is parallel to the direction of the portal guide rail, the guide pulley A6 is arranged at a position close to the right side of the portal and is vertical to the direction of the portal guide rail, and the fixed pulley A5 is arranged at a position close to the right side of the portal and is parallel to the direction of the portal guide rail; a movable pulley B20, a movable pulley C21, a movable pulley D22 and a movable pulley a10 are respectively arranged above the pallet fork 12 from left to right, wherein the movable pulleys B20 and C21 are arranged in one group on the left side of the pallet fork 12 and have a direction parallel to the direction of the mast guide rail, and the movable pulleys D22 and a movable pulley a10 are arranged on the right side of the pallet fork 12 and have a direction parallel to the direction of the mast guide rail.
As shown in fig. 7, two ends of a steel wire rope 8 are respectively fixed at the outer sides of a roller B17 and a roller A3, the steel wire rope 8 downwards respectively rounds a movable pulley B20 and a movable pulley a10 upwards, the steel wire rope 8 upwards respectively rounds a fixed pulley B14 and a fixed pulley a5 downwards, the steel wire rope 8 downwards respectively rounds a movable pulley C21 and a movable pulley D22 upwards, the steel wire rope 8 upwards respectively rounds a guide pulley back B13 and a guide pulley a6 upwards and is connected with each other to form four groups of fixed-movable pulley structures, and 8 steel wire ropes are stressed to lift the fork 12.
As shown in fig. 5 and 7, the relationship between the pulley positions and the winding positions of the steel cable 8 are further illustrated, when each of the drum A3 and the drum B17 winds 8 circles of the steel cable, the drum translates outward along the threaded shaft 19 by the diameter of one steel cable 8, each of the drum A3 and the drum B17 releases 8 circles of the steel cable, the drum translates inward along the threaded shaft 19 by the diameter of one steel cable 8, so as to ensure that the tangent point X of the steel cable 8 and the drum A3 is on the same vertical line with the movable pulley a10 during the lifting and lowering of the fork 12, the tangent point X of the steel cable 8 and the drum B17 is on the same vertical line with the movable pulley B20, the fixed pulley B13 is on the middle plane Y of the movable pulleys B20 and C21, the fixed pulley A5 is on the middle planes of the movable pulleys D22 and a10, the outer tangent point of the guide pulley B13 and the steel cable 8 is on the same vertical line with the movable pulley C21, and the outer tangent point of the guide pulley a6 is on the same vertical line 10, as shown in fig. 8, the pulley grooves of each pulley are all U-shaped groove structures, which satisfies the above relationship, the steel wire rope 8 does not overlap during the winding and releasing process on the drum, the steel wire rope 8 does not rub against the groove walls of each pulley, and the service life of the steel wire rope 8 is ensured.
The working process of the invention is as follows:
under the lifting working condition, a motor 1 with double output shafts rotates forwards to drive a roller A3 and a roller B17 to rotate forwards, each time the motor 1 rotates forwards for a circle, the roller A3 and the roller B17 move outwards along a threaded shaft 19 by the diameter of a steel wire rope 8, meanwhile, the steel wire rope 8 drives a fork 12 to ascend through four sets of fixed-movable pulley structures, the fork 12 reaches the height of a working position, the motor 1 stops rotating, a brake A2 and a brake B15 brake, and the fork 12 stops moving;
when the pallet fork 12 rises to the lifting limit position, the upper limit block 11 of the pallet fork 12 triggers the upper limit switch 7 of the portal, the motor 1 stops rotating, the brake A2 and the brake B15 brake, and the pallet fork 12 stops moving;
under the descending working condition, the brake A2 and the brake B15 stop braking, the fork 12 falls down by self and load gravity, the steel wire rope 8 drags the roller A3 and the roller B17 to rotate reversely, and the roller A3 and the roller B17 move inwards by the distance of the diameter 8 of the steel wire rope along the threaded shaft 19 every time the rollers rotate reversely for one circle.
In conclusion, the threads are arranged in the roller and matched with the threaded shaft on the base of the roller, the roller can move in a self-adaptive manner when rotating, so that the steel wire rope is not overlapped when being wound on the roller, the fixed pulleys on the left side and the right side of the portal frame are respectively positioned on the median planes of the left movable pulley and the right movable pulley of the fork, the tangent points of the left guide pulley and the right guide pulley of the portal frame and the outer side of the steel wire rope are respectively positioned on the same vertical line with the movable pulleys on the inner side of the fork, the pulley wheel grooves are U-shaped, the steel wire rope does not rub with the wall of; through the ingenious design of structure, simple structure, the field of vision is wide, has reduced portal system's production and maintenance cost, has improved the efficiency and the precision of lifting of fork simultaneously.
Claims (6)
1. The utility model provides an electric fork truck hoist lifting gantry system which characterized in that: the automatic loading and unloading device comprises a gantry (9), a motor (1) with double output shafts, a limiting device, two brakes, two self-moving rollers, two L-shaped roller bases, two fixed pulleys, two guide pulleys, four movable pulleys arranged on a pallet fork (12) and a steel wire rope (8); an electric motor (1) is installed in the middle position above the top of a gantry (9), a brake B (15) and a brake A (2) are respectively connected to the left output shaft and the right output shaft of the electric motor (1), and the shaft end of an output shaft (18) of the electric motor is of a spline structure; an L-shaped roller base B (16) and an L-shaped roller base A (4) with a threaded shaft (19) are respectively arranged at the left side and the right side above the top of the gantry, and the threaded shaft (19) and an output shaft (18) of the motor are on the same axis; one side of the through holes in the roller A (3) and the roller B (17) is in a spline structure and is in spline fit with the end part of the output shaft (18) of the motor, and the other side of the through holes is provided with threaded holes and is in fit with a threaded shaft (19) on the base of the roller; a fixed pulley B (14), a guide pulley B (13), a guide pulley A (6) and a fixed pulley A (5) are respectively arranged below the top of the gantry (9) from left to right, the guide pulley B (13) and the guide pulley A (6) are respectively arranged at positions close to the left side and the right side of the gantry (9), and the direction is vertical to the direction of a gantry guide rail; the fixed pulley B (14) and the fixed pulley A (5) are respectively arranged at the positions close to the left side and the right side of the gantry (9), and the direction is parallel to the direction of a gantry guide rail; a movable pulley B (20), a movable pulley C (21), a movable pulley D (22) and a movable pulley A (10) are respectively arranged above the fork (12) from left to right, the movable pulleys B (20) and the movable pulley C (21) form a group and are arranged on the left side of the fork (12), the direction of the movable pulleys is parallel to the direction of a gantry guide rail, the movable pulleys D (22) and the movable pulley A (10) form a group and are arranged on the right side of the fork (12), and the direction of the movable pulleys D (21) and the direction of the movable pulleys A (10) are parallel to the direction of the; two ends of a steel wire rope (8) are fixed on the outer sides of the roller A (3) and the roller B (17), and the steel wire rope (8) is wound with the movable pulley, the fixed pulley and the guide pulley to form four groups of fixed-movable pulley structures; the steel wire rope (8) is stressed, the drum rotates to wind the steel wire rope (8), and the pallet fork (12) is driven to ascend through the pulley structure.
2. The electric forklift hoisting lifting gantry system of claim 1, wherein: the limiting device comprises a limiting switch (7) arranged on the upper right of the portal frame (9) and a limiting block (11) arranged on the right side of the fork (12).
3. The electric forklift hoisting lifting gantry system of claim 1, wherein: the thread pitch of the thread matched with the roller base is the distance of the diameter of one steel wire rope (8).
4. The electric forklift hoisting lifting gantry system of claim 1, wherein: the steel wire ropes (8) are wound with the movable pulleys, the fixed pulleys and the guide pulleys to form four groups of fixed-movable pulley structures, and the specific winding modes are as follows: the steel wire rope (8) downwards and respectively bypasses the movable pulley B (20) and the movable pulley A (10) upwards, the steel wire rope (8) upwards and respectively bypasses the fixed pulley B (14) and the fixed pulley A (5) downwards, the steel wire rope (8) downwards and respectively bypasses the movable pulley C (21) and the movable pulley D (22) upwards, the steel wire rope (8) upwards and respectively bypasses the guide pulley and then B (13) and the guide pulley A (6) are connected, and four groups of fixed-movable pulley structures are formed in a conformal mode.
5. The electric forklift hoisting lifting gantry system of claim 1, wherein: the fixed pulley A (5) on one side of the door frame (9) is positioned on the median plane (Y) of the movable pulley D (22) and the movable pulley A (10) on one side of the fork (12), and the fixed pulley B (14) on the other side of the door frame (9) is also positioned on the median plane of the movable pulley B (20) and the movable pulley C (21); the guide pulley B (13) and the outer side tangent point of the steel wire rope (8) are on the same vertical line (Z) with the inner side movable pulley C (21) on one side of the fork (12), and the guide pulley A (6) and the outer side tangent point of the steel wire rope (8) are also on the same vertical line with the inner side movable pulley D (22) on the other side of the fork (12).
6. The electric forklift hoisting lifting gantry system of any one of claims 1, 4 or 5, wherein: and the pulleys of the fixed pulley, the movable pulley and the guide pulley are all U-shaped pulley grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010088868.7A CN111232890A (en) | 2020-02-12 | 2020-02-12 | Hoisting and lifting gantry system of electric forklift |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010088868.7A CN111232890A (en) | 2020-02-12 | 2020-02-12 | Hoisting and lifting gantry system of electric forklift |
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| CN111232890A true CN111232890A (en) | 2020-06-05 |
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| CN202010088868.7A Pending CN111232890A (en) | 2020-02-12 | 2020-02-12 | Hoisting and lifting gantry system of electric forklift |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479055A (en) * | 2020-11-17 | 2021-03-12 | 杜美 | A quick hoisting device of protection type for road construction bridge |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1151959A1 (en) * | 2000-05-04 | 2001-11-07 | Rocla Oyj | Lift truck with extensible mast |
| CN101186268A (en) * | 2007-11-09 | 2008-05-28 | 刘清华 | Liftable hand propelled carrying vehicle |
| CN201125140Y (en) * | 2007-10-16 | 2008-10-01 | 叶诚 | Electric mechanical loading and unloading forklift |
| CN203346023U (en) * | 2013-07-15 | 2013-12-18 | 沈阳飞机工业集团物流装备有限公司 | Winding system of stacker hoisting mechanism |
| CN203754358U (en) * | 2014-04-02 | 2014-08-06 | 刘继成 | Electric elevating handling trolley |
| CN105152084A (en) * | 2015-09-21 | 2015-12-16 | 太原科技大学 | Steel rope full-freedom hoisting and motor-driving tilting forklift portal system |
| CN105645314A (en) * | 2016-03-14 | 2016-06-08 | 湖州中辰建设有限公司 | Decorating ceramic tile stacking and conveying trolley |
| CN205419680U (en) * | 2016-03-10 | 2016-08-03 | 北京高科物流仓储设备技术研究所有限公司 | Stacker and tow elevating gear thereof |
| CN106081962A (en) * | 2016-08-19 | 2016-11-09 | 宁波力富特牵引机制造有限公司 | A kind of electric capstan of constant force constant speed |
| CN109437061A (en) * | 2018-12-29 | 2019-03-08 | 国网山东省电力公司淄博供电公司 | A kind of calculator room equipment installation power-assisted yoke |
-
2020
- 2020-02-12 CN CN202010088868.7A patent/CN111232890A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1151959A1 (en) * | 2000-05-04 | 2001-11-07 | Rocla Oyj | Lift truck with extensible mast |
| CN201125140Y (en) * | 2007-10-16 | 2008-10-01 | 叶诚 | Electric mechanical loading and unloading forklift |
| CN101186268A (en) * | 2007-11-09 | 2008-05-28 | 刘清华 | Liftable hand propelled carrying vehicle |
| CN203346023U (en) * | 2013-07-15 | 2013-12-18 | 沈阳飞机工业集团物流装备有限公司 | Winding system of stacker hoisting mechanism |
| CN203754358U (en) * | 2014-04-02 | 2014-08-06 | 刘继成 | Electric elevating handling trolley |
| CN105152084A (en) * | 2015-09-21 | 2015-12-16 | 太原科技大学 | Steel rope full-freedom hoisting and motor-driving tilting forklift portal system |
| CN205419680U (en) * | 2016-03-10 | 2016-08-03 | 北京高科物流仓储设备技术研究所有限公司 | Stacker and tow elevating gear thereof |
| CN105645314A (en) * | 2016-03-14 | 2016-06-08 | 湖州中辰建设有限公司 | Decorating ceramic tile stacking and conveying trolley |
| CN106081962A (en) * | 2016-08-19 | 2016-11-09 | 宁波力富特牵引机制造有限公司 | A kind of electric capstan of constant force constant speed |
| CN109437061A (en) * | 2018-12-29 | 2019-03-08 | 国网山东省电力公司淄博供电公司 | A kind of calculator room equipment installation power-assisted yoke |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479055A (en) * | 2020-11-17 | 2021-03-12 | 杜美 | A quick hoisting device of protection type for road construction bridge |
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Application publication date: 20200605 |