CN111792579A - Anti-tilting method of forklift based on goods tilting prevention - Google Patents
Anti-tilting method of forklift based on goods tilting prevention Download PDFInfo
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- CN111792579A CN111792579A CN202010501528.2A CN202010501528A CN111792579A CN 111792579 A CN111792579 A CN 111792579A CN 202010501528 A CN202010501528 A CN 202010501528A CN 111792579 A CN111792579 A CN 111792579A
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- hydraulic cylinder
- cantilever beam
- forklift
- hydraulic
- oil tank
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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
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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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
Abstract
The invention discloses an anti-inclination method of a forklift based on goods inclination prevention, and belongs to the field of material handling vehicles. Wherein, a prevent fork truck of goods slope includes: install the strutting arrangement in every cantilever beam below, rotate the swivel subassembly of being connected with strutting arrangement to and install the master control computer in the fork truck control chamber, strutting arrangement includes: install the sequence control circuit in fork truck, keep away from fork truck's one end articulated first pneumatic cylinder with the cantilever beam to and with the other end articulated second pneumatic cylinder of cantilever beam, wherein, the second telescopic link of second pneumatic cylinder is articulated with the first cylinder body of first pneumatic cylinder, and the swivel subassembly includes: the vulcanizing device comprises a connecting shaft rotationally connected with the first hydraulic cylinder and two vulcanizing wheels arranged on two sides of the connecting shaft, wherein the vulcanizing wheels are rotationally connected with the connecting shaft, and a master control computer is electrically connected with a sequence control loop; the invention solves the problem of inclination of the goods and the forklift caused by overlarge weight and volume of the goods, and ensures the movement of the forklift.
Description
This patent is the divisional application, and the information of former application is as follows, the name: a forklift for preventing goods from inclining and an inclination preventing method are disclosed in the application number: 2019105202642, filing date: 2019-6-17.
Technical Field
The invention belongs to the field of material handling vehicles, and particularly relates to an anti-inclination method of a forklift for preventing goods from inclining.
Background
Fork trucks are industrial handling vehicles, and refer to various wheeled handling vehicles that perform handling, stacking, and short-distance transport operations on piece pallet goods. It is commonly used for transportation of large warehouse goods, and is usually driven by an oil-burning engine or a battery.
When the forklift is used for large-scale heavy objects, the problems that the forklift is wholly inclined, goods are toppled, accidents occur, personnel and economic losses occur and the like are caused due to the fact that the rear wheel of the forklift is tilted due to the fact that a cantilever beam of the forklift is too large in stress.
The problem of goods weight too big is fixed to fork truck through the back shaft that extends all around at fork truck among the prior art, but this kind of technical scheme has the unable problem that removes of fork truck.
Disclosure of Invention
The purpose of the invention is as follows: an anti-tipping method for a forklift truck is provided to solve the above problems of the prior art.
The technical scheme is as follows: the anti-tilting method based on the forklift for preventing the goods from tilting comprises the following steps: two cantilever beams of the forklift are arranged on the front side of the forklift,
a support means mounted beneath each cantilever beam, the support means comprising: the hydraulic control system comprises a sequential control loop, a first hydraulic cylinder and a second hydraulic cylinder, wherein the sequential control loop is installed in the forklift, the first hydraulic cylinder is hinged with one end, away from the forklift, of a cantilever beam, and the second hydraulic cylinder is hinged with one end, close to the forklift, of the cantilever beam;
a wheel assembly rotatably coupled to the support device, the wheel assembly comprising: the vulcanizing device comprises a connecting shaft which is rotationally connected with a first telescopic rod of a first hydraulic cylinder, and two vulcanizing wheels which are arranged on two sides of the connecting shaft, wherein the vulcanizing wheels are rotationally connected with the connecting shaft;
and the master control computer is arranged in the forklift operation chamber, and is electrically connected with the sequence control loop.
In a further embodiment, the bottom of the cantilever beam is provided with a containing cavity, the containing cavity is internally provided with a supporting device and a rotating wheel assembly, the supporting device and the rotating wheel assembly are contained in the containing cavity of the cantilever beam, the initial height of the cantilever beam can be reduced, and the cantilever beam is ensured to extend into the lower part of a cargo to carry the cargo.
In a further embodiment, a first limiting block and a second limiting block are fixedly mounted at two ends of a hinged part of the first hydraulic cylinder and the cantilever beam, the angle between the side edge of the second limiting block close to one end of the forklift and the cantilever beam is 5 degrees, and the angle between the side edge of the first limiting block at the other end and the cantilever beam is 90 degrees;
the second pneumatic cylinder is fixed with the third stopper with the contained angle end of the articulated department of cantilever beam, and the side of third stopper is 5 with the angle of cantilever beam. Can guarantee that the contained angle between first pneumatic cylinder and the cantilever beam is between 5 to 90, and the contained angle between first pneumatic cylinder and the cantilever beam is greater than 0, because first pneumatic cylinder and second pneumatic cylinder are in the dead point position when parallel with the cantilever beam, the telescopic link of second pneumatic cylinder stretches out unable first pneumatic cylinder of promotion and rotates this moment, so avoid first pneumatic cylinder and second pneumatic cylinder and cantilever beam parallel, can guarantee strutting arrangement's normal work, and the contained angle control between first pneumatic cylinder and the cantilever beam can avoid the angle of first pneumatic cylinder and cantilever beam too big within 90, can avoid the invalid output of second pneumatic cylinder.
In a further embodiment, the distance between the vulcanizing wheels is larger than the diameter of the second cylinder body of the second hydraulic cylinder, so that the second cylinder body can be accommodated between the vulcanizing wheels when the vulcanizing wheels are accommodated in the cantilever beam, and the space in the cantilever beam accommodating cavity is utilized to the maximum extent.
In a further embodiment, the sequential control loop comprises: the hydraulic control system comprises a sealed auxiliary oil tank installed in the forklift, a first hydraulic pump connected with the auxiliary oil tank, a three-position four-way electromagnetic directional valve connected with the output end of the first hydraulic pump, a second overflow valve connected with the three-position four-way electromagnetic directional valve, a rodless cavity of a second check valve and a rodless cavity of a first hydraulic cylinder, a rodless cavity of the second hydraulic cylinder connected with the output end of the second overflow valve and the input end of the second check valve, a first overflow valve connected with a rod cavity of the second hydraulic cylinder, a first check valve and a three-position four-way electromagnetic directional valve, and a rod cavity of the first hydraulic cylinder connected with the output end of the first overflow valve and the input end of the first check valve. Can stretch out the back completely at the second telescopic link of second pneumatic cylinder through sequence control return circuit, the first telescopic link with first pneumatic cylinder is stretched out again to the wheel subassembly still when with the bottom surface butt to realize withdrawing of first pneumatic cylinder and second pneumatic cylinder through tribit four-way solenoid directional valve, can avoid first pneumatic cylinder and second pneumatic cylinder simultaneous working to cause operating condition confusion, influence result of use.
In a further embodiment, the forklift itself has a sealed main oil tank, the secondary oil tank of the sequence control loop is installed at a position close to one end of the cantilever beam, a second hydraulic pump is further installed above the main oil tank, an oil inlet end of the second hydraulic pump is communicated with the secondary oil tank, an oil outlet end of the second hydraulic pump is communicated with the main oil tank, the main oil tank and the secondary oil tank are both communicated with an oil inlet end of the first hydraulic pump, the main oil tank of the forklift is installed at the rear end of the forklift as is well known, and the inner space of the rear end of the forklift is crowded, so that the secondary oil tank is installed at a position close to one end of the cantilever beam and then the oil in the secondary oil tank is input into.
And a liquid level meter is also arranged in the main oil tank and is electrically connected with the master control computer. Through from the internal oil transfer of bellytank to in the main tank, guarantee the liquid level constancy in the main tank, can guarantee that the weight of fork truck rear wheel is unchangeable, make fork truck's center be close to the rear wheel position, the emergence of the condition of the perk of the rear wheel of avoiding fork truck that can be further.
In a further embodiment, a display screen is installed on the main control computer, and a program for calculating the use states of the first hydraulic cylinder, the second hydraulic cylinder and each set of sequential control loop and calculating the angles between the first hydraulic cylinder and the cantilever beam and between the second hydraulic cylinder and the cantilever beam are stored in the main control computer; the first hydraulic cylinder, the second hydraulic cylinder and the use state of each set of sequential control loop are displayed through a display screen, and the angle graphs between the first hydraulic cylinder and the cantilever beam and the angle graphs between the second hydraulic cylinder and the cantilever beam are displayed respectively;
the master control computer is also internally stored with a preset state and a use state of the liquid level meter, so that a driver can visually see the use state of the first hydraulic cylinder, the second hydraulic cylinder and each set of sequence control loop, and can be controlled by the master control computer, and the driver can be helped to avoid the loss of personnel and economy caused by misoperation.
An anti-tipping method of a forklift for preventing tipping of a cargo, comprising: the cantilever beam using the forklift lifts the goods, the first electromagnet of the three-position four-way electromagnetic directional valve is powered through the master control computer at the moment, the rotating wheel assembly leaves the bottom surface when the cantilever beam rises, the rodless cavity pressure of the second hydraulic cylinder is reduced, and the pressure in the sequence control loop is constant, so that the first hydraulic pump of the sequence control loop conveys hydraulic oil from the auxiliary oil tank into the second hydraulic cylinder, the second telescopic rod extends to increase the angle of the first hydraulic cylinder and the cantilever beam, and the rotating wheel assembly is abutted with the ground again to provide supporting force for the cantilever beam.
If the angle of first pneumatic cylinder and cantilever beam reaches 90 back cantilever beam and still rises, the runner assembly leaves the bottom surface and the telescopic link of second pneumatic cylinder stretches out completely this moment, and the pressure in the no pole intracavity of second pneumatic cylinder is too big this moment, and hydraulic oil flows to the no pole intracavity of first pneumatic cylinder from second check valve and tribit four-way solenoid directional valve, makes the first telescopic link of first pneumatic cylinder stretch out until runner assembly and ground butt provide the holding power for the cantilever beam.
In a further embodiment, after the goods move to the unloading area, the second electromagnet of the three-position four-way electromagnetic directional valve is electrified through the master control computer, the three-position four-way electromagnetic directional valve is reversed, hydraulic oil is conveyed into rod cavities of the first hydraulic cylinder and the second hydraulic cylinder, oil drainage is carried out on rodless cavities of the first hydraulic cylinder and the second hydraulic cylinder, a first telescopic rod of the first hydraulic cylinder and a second telescopic rod of the second hydraulic cylinder are retracted, then the forklift continues to advance to place the goods in the unloading area, the first hydraulic cylinder and the second hydraulic cylinder are retracted to prevent the unloading area to which the goods move by the forklift from being a higher platform, at the moment, the goods cannot be placed in the unloading area unless the first hydraulic cylinder and the second hydraulic cylinder are retracted, so that a cantilever beam of the forklift and the bottom surface of the goods abut against the unloading area before the forklift unloads to prevent the goods from inclining with the forklift, the first and second hydraulic cylinders are then retracted and the forklift continues to move forward to place the load in the unloading area.
In a further embodiment, in the working process of the forklift, the second hydraulic pump pumps oil from the auxiliary oil tank into the main oil tank all the time to enable the liquid level in the main oil tank to be constant, when the liquid level reaches the preset state of the liquid level meter, the liquid level meter feeds the liquid level back to the main control computer, the main control computer controls the second hydraulic pump to stop working until the liquid level in the main oil tank does not reach the preset state of the liquid level meter, the main control computer starts the second hydraulic pump again to enable the liquid level in the main oil tank to be constant, the liquid level in the main oil tank is guaranteed to be constant through the main control computer and the second hydraulic pump, and therefore the gravity center of the forklift is guaranteed to.
Has the advantages that: the invention discloses a forklift for preventing goods from inclining and an inclination prevention method, wherein a supporting device is arranged below a cantilever beam of the forklift, so that goods and the forklift can be prevented from inclining forwards to cause goods dumping accidents, the using states of a first hydraulic cylinder, a second hydraulic cylinder and a sequence control loop are visually displayed through a display screen of a main control computer, misoperation of a driver can be avoided, the probability of personnel and economic losses is reduced, and the supporting device can still move while supporting the cantilever beam through a rotating wheel assembly.
Drawings
Fig. 1 is a schematic view of the assembly structure of the present invention.
FIG. 2 is a schematic diagram of the sequence control loop of the present invention.
Fig. 3 is a schematic cross-sectional structure of the present invention.
Fig. 4 is a partially enlarged view of fig. 3.
Fig. 5 is a schematic view of the construction of the wheel assembly of the present invention.
Fig. 6 is a schematic view showing the positions of the main fuel tank and the sub fuel tank of the present invention.
The reference numerals shown in fig. 1 to 6 are: the system comprises a cantilever beam 1, a supporting device 2, a rotating wheel assembly 3, a main control computer 4, a sequence control loop 5, a first limiting block 6, a second limiting block 7, a third limiting block 8, a first hydraulic cylinder 21, a second hydraulic cylinder 22, an auxiliary oil tank 51, a first hydraulic pump 52, a three-position four-way electromagnetic directional valve 53, a second overflow valve 54, a second one-way valve 55, a first overflow valve 56, a first one-way valve 57, a main oil tank 11, a second hydraulic pump 12, a first electromagnet Y1 and a second electromagnet Y2.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In this embodiment, the main oil tank 11 and the secondary oil tank 51 are welded by Q235 carbon steel plate, oil is injected after the welding is completed to detect whether the sealing is performed, and surface painting is performed after the sealing is detected to prevent the surface of the secondary oil tank 51 from being oxidized and prevent the oxidized impurities from polluting the hydraulic oil, wherein the volume of the main oil tank 11 is larger than that of the secondary oil tank 51.
The model of first pneumatic cylinder 21 and second pneumatic cylinder 22 is the HSGK type pneumatic cylinder that the tip of cylinder body and telescopic link was equipped with articulated portion to the one end that first cylinder body of first pneumatic cylinder 21 is close to first telescopic link still welds the articulated portion matched with the articulated portion of the second telescopic link tip of second pneumatic cylinder 22.
The first hydraulic pump 52 and the second hydraulic pump 12 are of the type CB-B125.
The three-position four-way electromagnetic directional valve 53 is an M-shaped directional valve, and the sequence control loop 5 can enable oil coming out of the first hydraulic pump 52 to return to the auxiliary oil tank 51 when in a pressure maintaining state, so that the shutdown is not needed, and the problems that the first hydraulic pump 52 needs time for restarting, the hydraulic pressure at the initial starting stage is unstable and the like are solved.
The first and second relief valves 56, 54 are of the type DBE 30.
The first check valve 57 and the second check valve 55 are model AY-F10D-A (B).
The model of the main control computer 4 is TQ12-51AC, the main control computer 4 is installed in the operating room of the forklift, and the main control computer 4 stores a program for controlling and adjusting the first hydraulic pump 52, the three-position four-way electromagnetic directional valve 53, the first overflow valve 56 and the second overflow valve 54, and can control the main control computer through the display screen, and a program for calculating the positions of the first hydraulic cylinder 21 and the second hydraulic cylinder 22 and displaying a graph.
The middle position of the vulcanizing wheel is provided with a stepped hole and a ball bearing is fixedly arranged.
Connecting the shaft: the connecting axle is the step axle, the articulated portion of the telescopic link tip of first pneumatic cylinder 21 and second pneumatic cylinder 22 can be passed to the jackshaft of connecting axle, and cooperate with articulated portion, and it has the jump ring groove to open at the jackshaft, pass the articulated portion of telescopic link tip with the connecting axle after, install the connecting axle on articulated portion through the joint in jump ring and jump ring groove, the both ends of connecting axle are less than articulated portion, the jump ring groove has still been opened at the both ends of connecting axle, install the vulcanization wheel after the both ends of connecting axle, install the vulcanization wheel on the connecting axle through the joint in jump ring and jump ring groove, wherein, the length of the jackshaft of connecting axle is greater than the cylinder body diameter of first pneumatic cylinder 21 and second pneumatic.
The cantilever beam 1 is L-shaped, the side surface is arranged on the forklift, the bottom end is provided with a groove, two sides of the groove are provided with corresponding through holes, and the circumference around the axis is provided with a threaded hole.
The articulated shaft is a step shaft, one end of the articulated shaft can be matched with the through hole and the articulated part of the cylinder bodies of the cantilever beam 1, the first hydraulic cylinder 21 and the second hydraulic cylinder 22, the top end of the articulated shaft is also provided with a clamp spring groove, and the other end of the articulated shaft is larger than the through hole of the cantilever beam 1 and is provided with a countersunk hole around the circumference of the axis.
The assembling process comprises the following steps: firstly, the auxiliary oil tank 51 is installed in a forklift, then the second hydraulic pump 12 is installed above the main oil tank 11, the second hydraulic pump 12, the main oil tank 11 and the auxiliary oil tank 51 are communicated, then the input end of the first hydraulic pump 52 is communicated with the bottom end of the auxiliary oil tank 51, then the oil inlet and the oil return port of the three-position four-way electromagnetic directional valve 53 are respectively communicated with the output end of the first hydraulic pump 52 and the top end of the auxiliary oil tank 51, then the second overflow valve 54, the second one-way valve 55 and the rodless cavity of the first hydraulic cylinder 21 are simultaneously communicated with the oil outlet of the three-position four-way electromagnetic directional valve 53, then the rodless cavity of the second hydraulic cylinder 22 is simultaneously communicated with the output end of the second overflow valve 54 and the input end of the second one-way valve 55, then the rod cavity of the second hydraulic cylinder 22 is simultaneously communicated with the first overflow valve 56, the first one-way valve 57 and the three-position four-way electromagnetic directional valve 53, and then the rod cavity of the first hydraulic cylinder 21 is simultaneously communicated The input end is communicated, then the main control computer 4 is installed in an operating chamber of the forklift, and then the first hydraulic pump 52, the three-position four-way electromagnetic directional valve 53, the first overflow valve 56 and the second overflow valve 54 are electrically connected, so that the assembly process of the sequence control loop 5 is completed, in the assembly process, attention needs to be paid to that each forklift has two sets of sequence control loops 5, and the communication is all communicated through hydraulic hoses, so that the assembly and the use are convenient.
After the sequence control loop 5 is assembled, the connecting shaft is assembled at the end part of the telescopic rod of the first hydraulic cylinder 21 through the clamp spring, then the vulcanizing wheels are installed at the two ends of the connecting shaft through the clamp spring, so that the assembly of the rotating wheel assembly 3 is completed, then the cylinder bodies of the first hydraulic cylinder 21 and the second hydraulic cylinder 22 are installed in the groove of the cantilever beam 1 through the hinge shaft, the hinge shaft is fixed on the cantilever beam 1 through the screw and the clamp spring groove, then the hinge part of the first cylinder body of the first hydraulic cylinder 21 is hinged with the hinge part of the end part of the second telescopic rod of the second hydraulic cylinder 22 through the pin shaft, and so that the assembly of the supporting device 2 is completed.
The working principle is as follows: firstly, the cantilever beam 1 of the forklift is used for lifting the goods, at the moment, the first electromagnet Y1 of the three-position four-way electromagnetic directional valve 53 is electrified through the master control computer 4, the rotating wheel assembly 3 leaves the bottom surface while the cantilever beam 1 is lifted, the pressure in the rodless cavity of the second hydraulic cylinder 22 is reduced, and the pressure in the sequence control loop 5 is constant, so that the first hydraulic pump 52 of the sequence control loop 5 conveys hydraulic oil from the auxiliary oil tank 51 to the second hydraulic cylinder 22, the second telescopic rod extends out to increase the angle between the first hydraulic cylinder 21 and the cantilever beam 1 until the rotating wheel assembly 3 is abutted with the ground again to provide supporting force for the cantilever beam 1.
If the angle between the first hydraulic cylinder 21 and the cantilever beam 1 reaches 90 degrees, the cantilever beam 1 still rises, at this time, the rotating wheel assembly 3 leaves the bottom surface, the telescopic rod of the second hydraulic cylinder 22 completely extends, at this time, the pressure in the rodless cavity of the second hydraulic cylinder 22 is too large, hydraulic oil flows into the rodless cavity of the first hydraulic cylinder 21 from the second one-way valve 55 and the three-position four-way electromagnetic directional valve 53, and the first telescopic rod extends until the rotating wheel assembly 3 abuts against the ground to provide supporting force for the cantilever beam 1.
Then after the goods move to the unloading area, the second electromagnet Y2 of the three-position four-way electromagnetic directional valve 53 is powered through the main control computer 4, the three-position four-way electromagnetic directional valve 53 is reversed, hydraulic oil is conveyed to rod cavities of the first hydraulic cylinder 21 and the second hydraulic cylinder 22, oil drainage of the rod-free cavities of the first hydraulic cylinder 21 and the second hydraulic cylinder 22 is achieved, the first telescopic rod and the second telescopic rod are retracted, and then the forklift continues to advance to place the goods in the unloading area.
In the working process of the forklift, the second hydraulic pump 12 pumps oil from the auxiliary oil tank 51 into the main oil tank 11 all the time to enable the liquid level in the main oil tank 11 to be constant, when the liquid level reaches the preset state of the liquid level meter, the liquid level meter feeds the liquid level back to the main control computer 4, the main control computer 4 controls the second hydraulic pump 12 to stop working until the liquid level in the main oil tank 11 does not reach the preset state of the liquid level meter, and the main control computer 4 starts the second hydraulic pump 12 again to enable the liquid level in the main oil tank 11 to be constant.
Through hydraulic system in the hydraulic pressure invariable guarantee that swivel subassembly 3 cooperates the height of cantilever beam 1 all the time and with the bottom surface butt, reach the effect that supports cantilever beam 1 to oil through second pneumatic cylinder 12 in with bellytank 51 is taken out to main oil tank 11 with the focus of adjustment fork truck, simultaneously through the vulcanization wheel of swivel subassembly 3 in order to follow fork truck and remove.
In a further embodiment, the installation position of the second hydraulic cylinder 22 on the cantilever beam 1 is higher than the installation position of the first hydraulic cylinder 21, that is, the first hydraulic cylinder 21 is closer to the ground, the installation position of the second hydraulic cylinder 22 is higher than the installation position of the first hydraulic cylinder 21, so that collision can be avoided when the first hydraulic cylinder 21 and the second hydraulic cylinder 22 are folded, and the first hydraulic cylinder 21 and the second hydraulic cylinder 22 can be prevented from having dead point positions in the use process by matching the installation position of the second hydraulic cylinder 22 with the installation position of the first hydraulic cylinder 21 and the angle thereof.
In a further embodiment, a forklift for preventing tipping of a load further comprises: one corner is an oblique angle of 5 degrees, and the top end is provided with a second limiting block 7 and a third limiting block 8 with a plurality of countersunk holes.
The L-shaped corners are all 90 degrees, and one end of the L-shaped corner is provided with a first limiting block 6 with a plurality of countersunk holes.
The bottom end of the groove of the cantilever beam 1 is also provided with a plurality of threaded holes, and the threaded holes correspond to the through holes on the two sides of the groove.
The assembling process comprises the following steps: the screws respectively penetrate through the countersunk holes of the first limiting block 6, the second limiting block 7 and the third limiting block 8, the first limiting block 6 and the second limiting block 7 are respectively and fixedly installed at two ends of the hinged position of the first hydraulic cylinder 21 and the cantilever beam 1, the third limiting block 8 is fixedly installed at an included angle end of the hinged position of the second hydraulic cylinder 22 and the cantilever beam 1, and the first limiting block 6 is installed at the included angle end of the first hydraulic cylinder 21 and the cantilever beam 1.
The working principle is as follows: can guarantee through first stopper 6 and third stopper 8 that there is the contained angle all the time in first pneumatic cylinder 21 and second pneumatic cylinder 22 and cantilever beam 1, make not have the dead point position between first pneumatic cylinder 21 and the second pneumatic cylinder 22, can guarantee that the telescopic link of second pneumatic cylinder 22 stretches out back first pneumatic cylinder 21 and can take place angular displacement.
The maximum angle between the first hydraulic cylinder 21 and the cantilever beam 1 after the telescopic rod of the second hydraulic cylinder 22 is completely extended can be ensured to be 90 degrees by the second limiting block 7, and the situation that the supporting force of the cantilever beam 1 is weakened due to the fact that the first hydraulic cylinder 21 deviates from the top point when the angle between the first hydraulic cylinder 21 and the cantilever beam 1 exceeds 90 degrees is avoided.
It should be noted that, before the first stopper 6, the second stopper 7 and the third stopper 8 are installed, the supporting device 2 should be detached first, or before the supporting device 2 is installed, the first stopper 6, the second stopper 7 and the third stopper 8 should be fixedly installed in the groove of the cantilever beam 1.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.
Claims (8)
1. The anti-inclination method of the forklift based on the anti-inclination of the goods is characterized by comprising the following steps: prevent fork truck of goods slope, this prevent fork truck of goods slope includes two cantilever beams (1) of fork truck, installs strutting arrangement (2) in every cantilever beam (1) below, strutting arrangement (2) include: the hydraulic control system comprises a sequence control loop (5) arranged in the forklift, a first hydraulic cylinder (21) hinged to one end, far away from the forklift, of a cantilever beam (1), and a second hydraulic cylinder (22) hinged to one end, close to the forklift, of the cantilever beam (1), wherein a second telescopic rod of the second hydraulic cylinder (22) is hinged to a first cylinder body of the first hydraulic cylinder (21), and the first hydraulic cylinder (21) and the second hydraulic cylinder (22) are communicated with the sequence control loop (5);
a wheel assembly (3) rotatably connected to the support means (2), said wheel assembly (3) comprising: the vulcanizing device comprises a connecting shaft which is rotationally connected with a first telescopic rod of a first hydraulic cylinder (21), and two vulcanizing wheels which are arranged on two sides of the connecting shaft, wherein the vulcanizing wheels are rotationally connected with the connecting shaft;
the main control computer (4) is arranged in the forklift operation room, wherein the main control computer (4) is electrically connected with the sequence control loop (5);
an accommodating cavity is formed in the bottom of the cantilever beam (1), and a supporting device (2) and a rotating wheel assembly (3) are accommodated in the accommodating cavity;
the sequence control loop (5) comprises: the hydraulic control system comprises a sealed auxiliary oil tank (51) installed in a forklift, a first hydraulic pump (52) connected with the auxiliary oil tank (51), a three-position four-way electromagnetic directional valve (53) connected with the output end of the first hydraulic pump (52), a second overflow valve (54) connected with the three-position four-way electromagnetic directional valve (53), a second check valve (55) and a rodless cavity of a first hydraulic cylinder (21), a rodless cavity of a second hydraulic cylinder (22) connected with the output end of the second overflow valve (54) and the input end of the second check valve (55), a first overflow valve (56), a first check valve (57) and a three-position four-way electromagnetic directional valve (53) connected with a rod cavity of the second hydraulic cylinder (22), and a rod cavity of the first hydraulic cylinder (21) connected with the output end of the first overflow valve (56) and the input end of the first check valve (57);
the anti-tilting method based on the forklift for preventing the goods from tilting comprises the following steps: the goods are lifted by using a cantilever beam (1) of a forklift, at the moment, a first electromagnet Y1 of a three-position four-way electromagnetic directional valve (53) is electrified through a master control computer (4), the rotating wheel assembly (3) leaves the bottom surface while the cantilever beam (1) is lifted, the pressure in a rodless cavity of a second hydraulic cylinder (22) is reduced, and the pressure in a sequence control loop (5) is constant, so that a first hydraulic pump (52) of the sequence control loop (5) conveys hydraulic oil from an auxiliary oil tank (51) to the second hydraulic cylinder (22), a second telescopic rod extends out to increase the angle between the first hydraulic cylinder (21) and the cantilever beam (1) until the rotating wheel assembly (3) is abutted against the ground again to provide supporting force for the cantilever beam (1);
if the angle between the first hydraulic cylinder (21) and the cantilever beam (1) reaches 90 degrees, the cantilever beam (1) still rises, the rotating wheel assembly (3) leaves the bottom surface at the moment, the telescopic rod of the second hydraulic cylinder (22) completely extends out, the pressure in the rodless cavity of the second hydraulic cylinder (22) is overlarge at the moment, hydraulic oil flows into the rodless cavity of the first hydraulic cylinder (21) from the second one-way valve (55) and the three-position four-way electromagnetic directional valve (53), and the first telescopic rod of the first hydraulic cylinder (21) extends until the rotating wheel assembly (3) abuts against the ground to provide supporting force for the cantilever beam (1).
2. The tilt prevention method of claim 1 based on a forklift for preventing tilting of a load, wherein: a first limiting block (6) and a second limiting block (7) are fixedly mounted at two ends of a hinged part of the first hydraulic cylinder (21) and the cantilever beam (1), the angle between the side edge of the second limiting block (7) close to one end of the forklift and the cantilever beam is 5 degrees, and the angle between the side edge of the first limiting block (6) at the other end and the cantilever beam is 90 degrees;
the angle end fixed mounting of articulated department of second pneumatic cylinder (22) and cantilever beam (1) has third stopper (8), and the side of third stopper (8) is 5 with the angle of cantilever beam.
3. The tilt prevention method of claim 1 based on a forklift for preventing tilting of a load, wherein: the distance between the vulcanizing wheels is larger than the diameter of the second cylinder body of the second hydraulic cylinder (22).
4. The tilt prevention method of claim 1 based on a forklift for preventing tilting of a load, wherein: the sequence control loop (5) comprises: the hydraulic control system comprises a sealed auxiliary oil tank (51) installed in a forklift, a first hydraulic pump (52) connected with the auxiliary oil tank (51), a three-position four-way electromagnetic directional valve (53) connected with the output end of the first hydraulic pump (52), a second overflow valve (54) connected with the three-position four-way electromagnetic directional valve (53), a second check valve (55) and a rodless cavity of a first hydraulic cylinder (21), a rodless cavity of a second hydraulic cylinder (22) connected with the output end of the second overflow valve (54) and the input end of the second check valve (55), a first overflow valve (56) connected with a rod cavity of the second hydraulic cylinder (22), a first check valve (57) and a three-position four-way electromagnetic directional valve (53), and a rod cavity of the first hydraulic cylinder (21) connected with the output end of the first overflow valve (56) and the input end of the first check valve (57).
5. The tilt prevention method of claim 4 based on a forklift for preventing the tilt of the cargo, wherein: the forklift is provided with a sealed main oil tank (11), an auxiliary oil tank (51) of the sequence control loop (5) is arranged at a position close to one end of the cantilever beam, a second hydraulic pump (12) is further arranged above the main oil tank (11), the oil inlet end of the second hydraulic pump (12) is communicated with the auxiliary oil tank (51), and the oil outlet end of the second hydraulic pump is communicated with the main oil tank (11);
the auxiliary oil tank (51) is communicated with the oil inlet end of the first hydraulic pump (52);
and a liquid level meter is also arranged in the main oil tank and is electrically connected with the master control computer (4).
6. The tilt prevention method of claim 5 based on a forklift for preventing the tilt of a load, wherein: a display screen is installed on the main control computer (4), and programs for calculating the use states of the first hydraulic cylinder (21), the second hydraulic cylinder (22) and each set of sequence control loop (5) and calculating the angles between the first hydraulic cylinder (21) and the cantilever beam (1) and between the second hydraulic cylinder (22) and the cantilever beam (1) are stored in the main control computer (4); the first hydraulic cylinder (21), the second hydraulic cylinder (22) and the use state of each set of sequence control loop (5) are displayed through a display screen, and the angle graphs between the first hydraulic cylinder (21) and the cantilever beam (1) and the angle graphs between the second hydraulic cylinder (22) and the cantilever beam (1) are displayed;
the main control computer (4) is also internally stored with the preset state and the use state of the liquid level meter.
7. The tilt prevention method of claim 1 based on a forklift for preventing tilting of a load, wherein: after the goods move to the unloading area, the second electromagnet Y2 of the three-position four-way electromagnetic directional valve (53) is electrified through the master control computer (4), the three-position four-way electromagnetic directional valve (53) is made to change the direction, hydraulic oil is conveyed into rod cavities of the first hydraulic cylinder (21) and the second hydraulic cylinder (22), rodless cavities of the first hydraulic cylinder (21) and the second hydraulic cylinder (22) are made to drain oil, a first telescopic rod of the first hydraulic cylinder (21) and a second telescopic rod of the second hydraulic cylinder (22) are retracted, and then the forklift continues to move forwards to place the goods in the unloading area.
8. The tilt prevention method of claim 1 based on a forklift for preventing tilting of a load, wherein: in the working process of the forklift, the second hydraulic pump (12) pumps oil from the auxiliary oil tank (51) into the main oil tank (11) all the time to enable the liquid level in the main oil tank (11) to be constant, when the liquid level reaches the preset state of the liquid level meter, the liquid level is fed back to the main control computer (4) by the liquid level meter, the main control computer (4) controls the second hydraulic pump (12) to stop working until the liquid level in the main oil tank (11) does not reach the preset state of the liquid level meter, and the main control computer (4) starts the second hydraulic pump (12) again to enable the liquid level in the main oil tank (11) to be constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010501528.2A CN111792579A (en) | 2019-06-17 | 2019-06-17 | Anti-tilting method of forklift based on goods tilting prevention |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520264.2A CN110240090B (en) | 2019-06-17 | 2019-06-17 | Forklift capable of preventing goods from inclining and inclination prevention method |
| CN202010501528.2A CN111792579A (en) | 2019-06-17 | 2019-06-17 | Anti-tilting method of forklift based on goods tilting prevention |
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| CN201910520264.2A Division CN110240090B (en) | 2019-06-17 | 2019-06-17 | Forklift capable of preventing goods from inclining and inclination prevention method |
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| CN111792579A true CN111792579A (en) | 2020-10-20 |
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| CN202010501528.2A Withdrawn CN111792579A (en) | 2019-06-17 | 2019-06-17 | Anti-tilting method of forklift based on goods tilting prevention |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116354275A (en) * | 2023-03-28 | 2023-06-30 | 湖北中宸建筑安装有限公司 | Loading balance forklift |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112374423B (en) * | 2020-11-16 | 2022-03-04 | 青岛正方圆传动科技有限公司 | Auxiliary supporting mechanism for preventing forklift from inclining forwards |
| CN113929023B (en) * | 2021-08-26 | 2023-04-21 | 上海安能聚创物流科技有限公司 | Be applicable to big discharge device of storage commodity circulation |
| CN113859823B (en) * | 2021-08-26 | 2023-04-07 | 广东盈峰智能环卫科技有限公司 | Garbage bin transfer car (buggy) |
| CN116040189B (en) * | 2023-03-31 | 2023-06-30 | 广东东软学院 | Storage transfer robot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4108172B2 (en) * | 1998-03-06 | 2008-06-25 | 三菱電機株式会社 | Heavy material conveying apparatus and heavy material conveying method |
| GB9915384D0 (en) * | 1999-07-02 | 1999-09-01 | Mcniven Thomas | Load handling apparatus |
| NL1016045C1 (en) * | 2000-08-29 | 2002-03-01 | Christiaan Johan Jansen | Improved implementation and placement of anti-crushing device on forklift trucks or articulated loaders. |
| CN201105965Y (en) * | 2007-08-30 | 2008-08-27 | 浙江诺力机械股份有限公司 | Hydraulic supporting leg |
| CN201842613U (en) * | 2010-10-19 | 2011-05-25 | 中国人民解放军65547部队装备部 | Accompanying type self-loading and self-unloading electric forklift |
| CN103601111A (en) * | 2013-10-30 | 2014-02-26 | 安得物流股份有限公司 | Manual forklift truck |
| CN206872359U (en) * | 2017-06-29 | 2018-01-12 | 重庆旭普科技有限公司 | Fork truck with safety device |
| CN207276136U (en) * | 2017-10-25 | 2018-04-27 | 安徽省新铁铁路科技有限公司 | A kind of workpiece delivery device used for Sherardizing furnace |
| CN208135809U (en) * | 2018-03-16 | 2018-11-23 | 浙江嘉昱达机械有限公司 | It is a kind of can automatic blanking hydraulic hoisting machine |
-
2019
- 2019-06-17 CN CN201910520264.2A patent/CN110240090B/en active Active
- 2019-06-17 CN CN202010501528.2A patent/CN111792579A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116354275A (en) * | 2023-03-28 | 2023-06-30 | 湖北中宸建筑安装有限公司 | Loading balance forklift |
| CN116354275B (en) * | 2023-03-28 | 2023-10-13 | 湖北中宸建筑安装有限公司 | Loading balance forklift |
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| Publication number | Publication date |
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| CN110240090A (en) | 2019-09-17 |
| CN110240090B (en) | 2020-07-10 |
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Application publication date: 20201020 |