CN211035093U - Angle amplification mechanism for amplifying inclination angle of forklift gantry - Google Patents
Angle amplification mechanism for amplifying inclination angle of forklift gantry Download PDFInfo
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- CN211035093U CN211035093U CN201921612305.2U CN201921612305U CN211035093U CN 211035093 U CN211035093 U CN 211035093U CN 201921612305 U CN201921612305 U CN 201921612305U CN 211035093 U CN211035093 U CN 211035093U
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- oil cylinder
- connecting rod
- angle sensor
- support plate
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Abstract
The utility model discloses an angle amplification mechanism for amplifying the inclination angle of a forklift gantry, which comprises an oil cylinder support plate fixedly arranged at the lower part of an inclined oil cylinder, an angle sensor fixedly arranged on a forklift frame and a connecting rod assembly for amplifying the rotation angle of the inclined oil cylinder; the power input end of the connecting rod assembly is connected with the oil cylinder support plate of the inclined oil cylinder, and the power output end of the connecting rod assembly is connected with the input shaft of the angle sensor. The utility model discloses a set up angle amplification mechanism between slope hydro-cylinder and angle sensor and replace direct with angle sensor and slope hydro-cylinder coaxial arrangement for the less range swing that the slope hydro-cylinder produced at the during operation, the mechanism amplification is great range swing and transmits to angle sensor's input shaft through the angle amplification, in order to reduce because slope hydro-cylinder round pin axle turned angle is less, and the great angle measurement error that brings of angle sensor range.
Description
Technical Field
The utility model relates to a fork truck portal technical field specifically is a mechanism is enlargied to angle for enlarging fork truck portal inclination.
Background
With the continuous development of forklift technology, the requirement on the safety of the forklift is higher and higher, and the application of the active stable control of the gantry on the forklift is more and more frequent.
The forklift needs to use active stable control of the forklift gantry, the inclination state of the forklift gantry needs to be detected, an angle sensor is generally coaxially installed on a pin shaft of an inclination oil cylinder in the past, and the inclination angle of the forklift gantry is calibrated through voltage output by the angle sensor. However, the rotation angle of the pin shaft of the tilt cylinder is small, so that only a narrow voltage range can be output, the range of the angle sensor is large, the angle measurement error is large, and the problem that the tilt angle error of the system control forklift gantry is large is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mechanism is enlargied to angle for enlarging fork truck portal inclination to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an angle amplification mechanism for amplifying the inclination angle of a forklift gantry is characterized in that the forklift gantry is driven by an inclination oil cylinder to perform inclination motion;
the angle amplification mechanism comprises an oil cylinder support plate fixedly arranged at the lower part of the inclined oil cylinder, an angle sensor fixedly arranged on a forklift frame and a connecting rod assembly used for amplifying the rotation angle of the inclined oil cylinder;
the power input end of the connecting rod assembly is connected with the oil cylinder support plate of the inclined oil cylinder, and the power output end of the connecting rod assembly is connected with the input shaft of the angle sensor.
As a further aspect of the present invention: one end of the oil cylinder support plate is welded on the outer wall of the inclined oil cylinder, and a support plate connecting hole is formed in the other end of the oil cylinder support plate;
the oil cylinder support plate is perpendicular to the inclined oil cylinder.
As a further aspect of the present invention: the connecting rod assembly comprises a middle connecting rod and a rocker arm, one end of the middle connecting rod is movably connected with the oil cylinder support plate, and the other end of the rocker arm is movably connected with the angle sensor;
the other end of the middle connecting rod is movably connected with the other end of the rocker arm.
As a further aspect of the present invention: the middle connecting rod is a connecting rod in a waist-shaped structure;
first connecting holes are formed in two ends of the middle connecting rod, and the middle connecting rod is movably connected with the oil cylinder support plate through a rotating shaft which penetrates through one of the first connecting holes and the support plate connecting hole at the same time.
As a further aspect of the present invention: the rocker arm is of a U-shaped rod-shaped structure, and second connecting holes are formed in two ends of the rocker arm;
the rocker arm is movably connected with the middle connecting rod through a pin shaft which simultaneously penetrates through one of the second connecting holes and the other first connecting hole.
As a further aspect of the present invention: the angle sensor is transversely installed on the forklift frame through a connecting piece and is of a symmetrical structure symmetrical about a transverse center line.
As a further aspect of the present invention: the upper part of the angle sensor is provided with an upper arc-shaped groove, and the lower part of the angle sensor is provided with a lower arc-shaped groove;
the upper arc-shaped groove and the lower arc-shaped groove are symmetrical about a transverse central line of the angle sensor, and a longitudinal central line of the upper arc-shaped groove is superposed with a longitudinal central line of the lower arc-shaped groove.
As a further aspect of the present invention: the connecting piece is a fastening screw which penetrates through the upper arc-shaped groove and/or the lower arc-shaped groove and is screwed with the mounting hole on the forklift frame.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) an angle amplification mechanism is arranged between the tilt oil cylinder and the angle sensor to replace the direct coaxial installation of the angle sensor and the tilt oil cylinder, so that the tilt oil cylinder swings in a smaller amplitude during working, the swing is amplified into larger amplitude swing through the angle amplification mechanism and is transmitted to an input shaft of the angle sensor through the angle amplification mechanism, and the input shaft of the angle sensor has a larger angle input and outputs a larger voltage range, so that the larger angle measurement error caused by the smaller rotation angle of a pin shaft of the tilt oil cylinder and the larger measuring range of the angle sensor is reduced;
(2) the angle amplification mechanism is arranged to comprise the oil cylinder support plate, the connecting rod assembly connected with the angle sensor and the like, so that the angle amplification mechanism is simple in structure and low in use cost; meanwhile, the connecting rod assembly is arranged to be the middle connecting rod and the rocker arm which are small in size and movably connected, the middle connecting rod is movably connected with the oil cylinder support plate, the rocker arm is connected with the input shaft of the angle sensor, the oil cylinder support plate is utilized to drive the connecting rod assembly to generate a large-amplitude swing to be transmitted to the input shaft of the angle sensor, and therefore the angle amplification mechanism is ensured to be simple and convenient to operate and convenient to popularize and use;
(3) the oil cylinder support plate is fixedly arranged on the outer wall of the inclined oil cylinder and is vertically welded on the outer wall of the inclined oil cylinder close to the middle position, so that enough space is reserved for mounting and dismounting the connecting rod assembly, interference between the oil cylinder support plate and the connecting rod assembly in use is reduced, and the use convenience of the angle amplification mechanism is improved;
(4) the angle sensor is symmetrically arranged on the forklift gantry about the transverse center line of the angle sensor, and is fastened through the fastening screws arranged in the upper arc-shaped groove and the lower arc-shaped groove, so that the angle sensor is firmly and reliably arranged on the forklift gantry; simultaneously, the input shaft of the angle sensor is arranged on the transverse central line of the angle sensor, so that the maximum angle range of upward swing of the rocker arm and the maximum angle range of downward swing of the rocker arm are symmetrical about the transverse central line of the angle sensor, the accuracy of measurement of the swing amplitude of the inclined oil cylinder is greatly improved, the accurate control of the inclination angle of the forklift gantry is realized by controlling the inclination angle of the inclined oil cylinder, and the use stability and the use safety of the forklift gantry are guaranteed.
Drawings
FIG. 1 is a schematic view of the angle enlarging mechanism of the present invention;
fig. 2 is a partial enlarged view of the angle enlarging mechanism of the present invention.
In the figure:
1-inclined oil cylinder and 11-oil cylinder support plate;
2-angle sensor, 21-input shaft, 22-connecting piece;
201-upper arc groove, 202-lower arc groove;
3-connecting rod component, 31-intermediate connecting rod, 32-rocker arm;
41-rotating shaft and 42-pin shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, an angle amplification mechanism for amplifying an inclination angle of a forklift mast, the forklift mast is driven by an inclination cylinder 1 to perform an inclination motion; the angle amplification mechanism comprises an oil cylinder support plate 11 fixedly arranged at the lower part of the inclined oil cylinder 1, an angle sensor 2 fixedly arranged on a forklift frame and a connecting rod assembly 3 for amplifying the rotation angle of the inclined oil cylinder 1; the power input end of the connecting rod assembly 3 is connected with the oil cylinder support plate 11 of the inclined oil cylinder 1, and the power output end of the connecting rod assembly is connected with the input shaft 21 of the angle sensor 2.
For accurately detecting the inclination state of the forklift gantry, and solving the problem that when an angle sensor 2 is coaxially installed on a pin shaft 42 of an inclination oil cylinder 1, the rotation angle of the pin shaft 42 of the inclination oil cylinder 1 is small, and the range of the angle sensor 2 is large, so that the angle measurement error is large, an angle amplification mechanism is arranged between the angle inclination oil cylinder 1 and the angle sensor 2, the angle amplification mechanism amplifies the swing angle of the inclination oil cylinder 1 by utilizing the lever principle, the output voltage range of the angle sensor 2 is increased, and the accurate control and measurement of the inclination angle of the forklift gantry are improved.
When the forklift mast is used specifically, the tilting oil cylinder 1 drives the forklift mast to tilt, and the angle amplifier is arranged to comprise an oil cylinder support plate 11, an angle sensor 2, a connecting rod assembly 3 and the like, so that one end of the connecting rod assembly 3 is movably connected with the oil cylinder support plate 11 fixedly arranged at the lower part of the tilting oil cylinder 1, and the other end of the connecting rod assembly is connected with an input shaft 21 of the angle sensor 2. When the inclined oil cylinder 1 drives the forklift mast to do inclined motion, the inclined oil cylinder 1 swings to a smaller extent, at the same time, the oil cylinder support plate 11 arranged at the lower part of the inclined oil cylinder 1 drives the connecting rod assembly 3 to move, because the connecting rod assembly 3 is smaller in length, the connecting rod assembly 3 can swing to a larger extent under the driving of the oil cylinder support plate 11 and transmit the larger-extent swing to the angle sensor 2 through the input shaft 21 of the angle sensor 2, namely, the small-extent swing of the inclined oil cylinder 1 in the using process is amplified to be larger-extent swing through the angle amplifying mechanism and transmitted to the input shaft 21 of the angle sensor 2 through the angle amplifying mechanism, so that the input shaft 21 of the angle sensor 2 has a larger-angle input, and a larger-extent voltage is output, and the rotation angle of the pin shaft 42 of the inclined oil cylinder 1 is smaller, and 2 the great angle measurement errors that bring of angle sensor's range, and then improve fork truck portal inclination angle measurement's precision.
Referring to fig. 1, one end of the oil cylinder support plate 11 is welded on the outer wall of the inclined oil cylinder 1, and the other end of the oil cylinder support is provided with a support plate connecting hole; the oil cylinder support plate 11 is perpendicular to the inclined oil cylinder 1.
In order to transmit the small-amplitude inclination of the inclined oil cylinder 1 to the angle sensor 2 through the angle amplification mechanism, an oil cylinder support plate 11 is fixedly arranged on the outer wall of the inclined oil cylinder 1, and a support plate connecting hole is formed in the oil cylinder support plate 11, so that the angle amplification mechanism is movably connected through the support plate connecting hole. In order to facilitate the installation, the disassembly and the use of the angle amplification mechanism, the oil cylinder support plate 11 is preferably vertically welded at the position, close to the middle position, of the outer wall of the inclined oil cylinder 1, the angle amplification mechanism and the oil cylinder support plate 11, provided with the support plate connecting hole, are convenient to have enough installation and disassembly space, enough movable space is reserved for the angle amplification mechanism when the angle amplification mechanism is used, the angle amplification mechanism is convenient to install and disassemble, and the use convenience of the angle amplification mechanism is improved.
Referring to fig. 1 and 2, the connecting rod assembly 3 includes an intermediate connecting rod 31 having one end movably connected to the cylinder support plate, and a rocker arm 32 having one end movably connected to the angle sensor; the other end of the intermediate link 31 is movably connected with the other end of the rocker 32.
The middle connecting rod 31 is a connecting rod with a waist-shaped structure; first connecting holes are formed in two ends of the middle connecting rod 31, and the middle connecting rod 31 is movably connected with the oil cylinder support plate 11 through a rotating shaft 41 which penetrates through one of the first connecting holes and the support plate connecting hole at the same time.
The rocker arm 32 is of a U-shaped rod-shaped structure, and second connecting holes are formed in two ends of the rocker arm 32; the rocker 32 is movably connected with the intermediate link 31 through a pin 42 simultaneously penetrating through one of the second connecting holes and the other first connecting hole.
The link assembly 3 is a link mechanism including an intermediate link 31 and a rocker 32, and during assembly, one end of the intermediate link 31 is rotatably connected to one end of the rocker 32 by a pin 42, the other end of the intermediate link 31 is connected to the cylinder plate 11 by a rotating shaft 41, and the other end of the rocker 32 is connected to the input shaft 21 of the angle sensor 2.
When the device is used specifically, the inclined oil cylinder 1 drives the forklift gantry to do inclined motion, the inclined oil cylinder 1 swings in a smaller amplitude, the oil cylinder support plate 11 arranged at the lower part of the inclined oil cylinder 1 drives the middle connecting rod 31 of the connecting rod assembly 3 to move, the middle connecting rod 31 drives the rocker 32 connected with the input shaft 21 of the angle sensor 2 to move, and the length of the middle connecting rod 31 and the length of the rocker 32 are both smaller, so that the smaller amplitude swing of the inclined oil cylinder 1 can be converted into larger amplitude swing of the connecting rod assembly 3 and transmitted to the input shaft 21 of the angle sensor 2, the input shaft 21 of the angle sensor 2 has larger angle input, the angle sensor 2 outputs a larger-range voltage, and the larger angle measurement error caused by the smaller rotation angle of the pin shaft 42 of the inclined oil cylinder 1 and the larger range of the angle sensor 2 is.
Referring to fig. 1 and 2, the angle sensor 2 is transversely mounted on the forklift frame through a connecting piece 22, and the angle sensor 2 is of a symmetrical structure symmetrical about a transverse center line.
The upper part of the angle sensor 2 is provided with an upper arc-shaped groove 201, and the lower part is provided with a lower arc-shaped groove 202; the upper arc-shaped slot 201 and the lower arc-shaped slot 202 are symmetrical about the transverse center line of the angle sensor 2, and the longitudinal center line of the upper arc-shaped slot 201 is coincident with the longitudinal center line of the lower arc-shaped slot 202.
The connecting piece 22 is a fastening screw which penetrates through the upper arc-shaped groove 201 and/or the lower arc-shaped groove 202 and is screwed with a mounting hole on the forklift frame.
The angle sensor 2 is a symmetrical structure symmetrical about a transverse center line, and when the angle sensor 2 is installed in detail, the angle sensor 2 is placed transversely, so that the upper part and the lower part of the angle sensor 2 are symmetrical about the transverse center line thereof, and meanwhile, the upper arc-shaped groove 201 and the lower arc-shaped groove 202 are symmetrically arranged on the upper part and the lower part of the angle sensor 2, so that the upper arc-shaped groove 201 and the lower arc-shaped groove 202 are also symmetrical about the transverse center line of the angle sensor 2. Realize the fixing of 2 upper portions of angle sensor on the fork truck portal through running through arc groove 201 and with the last mounting hole of fork truck frame fasten the fastening screw who closes, through running through arc groove 202 down and fasten the fastening screw who closes with another mounting hole on the fork truck portal soon, realize the fixing of 2 lower parts of angle sensor on the fork truck portal, and then realize the fastening of whole angle sensor 2 on the fork truck portal, guarantee that angle sensor 2 installs firmly on the fork truck portal, it is simple and convenient to dismantle, be convenient for link assembly 3's rocking arm 32 one end links to each other with angle sensor 2's input shaft 21.
The use principle of the angle amplification mechanism is that the inclined oil cylinder 1 drives the forklift gantry to do inclined motion, the inclined oil cylinder 1 swings in a small amplitude, the oil cylinder support plate 11 arranged at the lower part of the inclined oil cylinder 1 drives the middle connecting rod 31 of the connecting rod assembly 3 to move, the middle connecting rod 31 drives the rocker arm 32 connected with the input shaft 21 of the angle sensor 2 to move, in the working process, the middle connecting rod 31 of the connecting rod assembly 3 is in an inclined state, the rocker arm 32 is connected with the input shaft 21 of the angle sensor 2, the input shaft 21 of the angle sensor 2 is located on the transverse central line of the angle sensor 2, and preferably, in the using process of the rocker arm 32, the maximum angle range of upward swing of the rocker arm 32 is 0- α and the maximum angle range of downward swing of the rocker arm 32- α -0, which are symmetrical about the transverse.
Moreover, since the lengths of the intermediate link 31 and the rocker 32 of the link assembly 3 are both smaller than those of the tilt cylinder 1, the link assembly 3 can convert the smaller amplitude swing of the tilt cylinder 1 into the larger amplitude swing of the link assembly 3 and transmit the larger amplitude swing to the input shaft 21 of the angle sensor 2, so that the input shaft 21 of the angle sensor 2 has a larger angle input, the angle sensor 2 is ensured to output a larger voltage, and the tilt angle of the forklift mast is calibrated by the voltage output by the angle sensor 2. Through setting up the angle amplification mechanism between tilt cylinder 1 and angle sensor 2, to a great extent, when having solved direct angle sensor 2 and tilt cylinder 1 coaxial arrangement, bring because tilt cylinder 1 turned angle is less can only export a narrower voltage range, and the great problem of angle measurement error that causes of the 2 great ranges of angle sensor, very big improvement to the measuring degree of accuracy of tilt cylinder 1 amplitude of oscillation, and then realize the accurate control to fork truck portal inclination through the inclination of control tilt cylinder 1, the stationarity and the security of fork truck portal use have been guaranteed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An angle amplification mechanism for amplifying the inclination angle of a forklift gantry is characterized in that the forklift gantry is driven by an inclination oil cylinder (1) to perform inclination motion; the method is characterized in that:
the angle amplification mechanism comprises an oil cylinder support plate (11) fixedly arranged at the lower part of the inclined oil cylinder (1), an angle sensor (2) fixedly arranged on a forklift frame and a connecting rod assembly (3) used for amplifying the rotation angle of the inclined oil cylinder (1);
the power input end of the connecting rod assembly (3) is connected with the oil cylinder support plate (11) of the inclined oil cylinder (1), and the power output end of the connecting rod assembly is connected with the input shaft (21) of the angle sensor (2).
2. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 1, wherein: one end of the oil cylinder support plate (11) is welded on the outer wall of the inclined oil cylinder (1), and a support plate connecting hole is formed in the other end of the oil cylinder support plate;
the oil cylinder support plate (11) is perpendicular to the inclined oil cylinder (1).
3. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 2, wherein: the connecting rod assembly (3) comprises a middle connecting rod (31) and a rocker arm (32), one end of the middle connecting rod is movably connected with the oil cylinder support plate, and the other end of the rocker arm is movably connected with the angle sensor;
the other end of the middle connecting rod (31) is movably connected with the other end of the rocker arm (32).
4. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 3, wherein: the middle connecting rod (31) is a connecting rod in a waist-shaped structure;
first connecting holes are formed in two ends of the middle connecting rod (31), and the middle connecting rod (31) is movably connected with the oil cylinder support plate (11) through a rotating shaft (41) which penetrates through one of the first connecting holes and the support plate connecting hole at the same time.
5. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 4, wherein: the rocker arm (32) is of a U-shaped rod-shaped structure, and second connecting holes are formed in two ends of the rocker arm (32);
the rocker arm (32) is movably connected with the middle connecting rod (31) through a pin shaft (42) which simultaneously penetrates through one of the second connecting holes and the other first connecting hole.
6. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 1, wherein: the angle sensor (2) is transversely installed on the forklift frame through a connecting piece (22), and the angle sensor (2) is of a symmetrical structure symmetrical about a transverse center line.
7. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 6, wherein: the upper part of the angle sensor (2) is provided with an upper arc-shaped groove (201), and the lower part of the angle sensor is provided with a lower arc-shaped groove (202);
the upper arc-shaped groove (201) and the lower arc-shaped groove (202) are symmetrical about the transverse central line of the angle sensor (2), and the longitudinal central line of the upper arc-shaped groove (201) is superposed with the longitudinal central line of the lower arc-shaped groove (202).
8. The angle amplification mechanism for amplifying the angle of inclination of a forklift mast according to claim 7, wherein: the connecting piece (22) is a fastening screw which penetrates through the upper arc-shaped groove (201) and/or the lower arc-shaped groove (202) and is screwed with a mounting hole on the forklift frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921612305.2U CN211035093U (en) | 2019-09-25 | 2019-09-25 | Angle amplification mechanism for amplifying inclination angle of forklift gantry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921612305.2U CN211035093U (en) | 2019-09-25 | 2019-09-25 | Angle amplification mechanism for amplifying inclination angle of forklift gantry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211035093U true CN211035093U (en) | 2020-07-17 |
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ID=71540534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921612305.2U Active CN211035093U (en) | 2019-09-25 | 2019-09-25 | Angle amplification mechanism for amplifying inclination angle of forklift gantry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211035093U (en) |
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2019
- 2019-09-25 CN CN201921612305.2U patent/CN211035093U/en active Active
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