CN110980553B - Movable cantilever crane - Google Patents
Movable cantilever crane Download PDFInfo
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- CN110980553B CN110980553B CN201911302672.7A CN201911302672A CN110980553B CN 110980553 B CN110980553 B CN 110980553B CN 201911302672 A CN201911302672 A CN 201911302672A CN 110980553 B CN110980553 B CN 110980553B
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- Prior art keywords
- threaded rod
- hinged
- arm
- power arm
- shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/48—Manually-movable jib cranes for use in workshops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0256—Operating and control devices
- B66C1/0262—Operating and control devices for rotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0293—Single lifting units; Only one suction cup
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a mobile cantilever crane, comprising: the lower end surface of the movable base is provided with a movable roller; the lower end of the upright post is fixed on the upper end surface of the movable base, and the upper end of the upright post is hinged with a main power arm; one end of the driving power arm is hinged to the upper end of the upright post and is fixedly connected with the power device, and the other end of the driving power arm is hinged with the hanging seat; the auxiliary power arm is parallel to the main power arm, and two ends of the auxiliary power arm are respectively hinged with the upright post and the hanging seat; the upper end of the suspension arm is rotatably connected with the suspension seat, and the lower end of the suspension arm is provided with a suspension connection device. The movable cantilever provided by the invention can be used for transporting goods or workpieces in a small space, can realize small-range transporting and transferring of the workpieces without a gantry crane or a rail crane, and has the advantages of wide application range and low use cost.
Description
Technical Field
The invention relates to the technical field of hoisting machinery, in particular to a movable cantilever crane.
Background
In warehouses, workshops, docks and the like, heavy objects such as goods or products need to be carried frequently. However, in small business or small workshop environments, gantry cranes, or rail cranes, cannot be used. And the rail-mounted crane cannot be used in a range other than the rail. Therefore, how to realize the conveying and transferring of the workpieces in a small working space is an urgent problem to be solved.
Disclosure of Invention
The object of the present invention is to provide a mobile jib crane to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a mobile jib crane comprising:
the lower end surface of the movable base is provided with a movable roller;
the lower end of the upright post is fixed on the upper end surface of the movable base, and the upper end of the upright post is hinged with a main power arm;
one end of the driving power arm is hinged to the upper end of the upright post and is fixedly connected with the power device, and the other end of the driving power arm is hinged with the hanging seat;
the auxiliary power arm is parallel to the main power arm, and two ends of the auxiliary power arm are respectively hinged with the upright post and the hanging seat;
the upper end of the suspension arm is rotatably connected with the suspension seat, and the lower end of the suspension arm is provided with a suspension connection device.
As an improvement of the present invention, two sides of the movable base are further symmetrically provided with fixing legs, and the fixing legs include:
the fixed cylinder is of a cylindrical structure with an opening at the lower end and is vertically arranged on two sides of the lower end face of the movable base;
the threaded rod is rotatably arranged in the inner cavity of the fixed cylinder, and first threads are arranged on the peripheral surface of the threaded rod;
the driving motor is arranged in the center of the lower end face of the movable base and is in transmission connection with the threaded rods on the two sides through a synchronous belt;
the first sliding block is arranged in the fixed cylinder and is in fit connection with the first thread of the threaded rod;
one end of each of the first connecting rods is hinged to the outer side wall of the first sliding block, and the other end of each of the first connecting rods is hinged to the second connecting rod;
one end of the second connecting rod is hinged on the outer wall of the fixed cylinder, and the lower side of the other end of the second connecting rod is fixedly connected with a stand foot.
As an improvement of the invention, the lower end part of the threaded rod is in a cavity structure, and the outer peripheral surface of the threaded rod is also provided with a second thread which is positioned below the fixed sleeve and has the same direction as the first thread;
the second sliding block is arranged in the fixed cylinder and is in fit connection with the second thread of the threaded rod;
the middle part of the V-shaped pressing plate is hinged to the inside of the threaded rod, one side of the V-shaped pressing plate penetrates through the side wall of the threaded rod and extends to the outside, and the other side of the V-shaped pressing plate is arranged in the inner cavity of the threaded rod;
the T-shaped pin is arranged in the threaded rod in a sliding mode and located below the V-shaped pressing plate, and a return spring is further sleeved on the T-shaped pin.
As an improvement of the invention, the lower end face of the threaded rod is fixedly connected with a guide cover, the center of the guide cover is provided with a guide hole, and the T-shaped plug pin is inserted in the guide hole.
In an improvement of the present invention, a lower end surface of the stand bar is planar, and a lower end surface of the T-shaped pin is conical.
As an improvement of the invention, the power device connected with the main power arm is a cylinder, and the cylinder is obliquely and fixedly connected on the side wall of the upright post.
As an improvement of the present invention, the mobile jib crane further comprises a workpiece clamping device, the workpiece clamping device is a suction cup, the suction cup is disposed at the lower end of the jib crane through a rotating assembly, and the rotating assembly comprises:
the rotating motor is fixedly arranged on one side of the lower end of the suspension arm, and an output shaft of the rotating motor penetrates through the other side of the suspension arm;
the speed regulating box is coaxially and rotatably connected with the output shaft;
the rotating shaft is in coaxial transmission connection with the speed regulating box, and the rotating shaft and the output shaft are arranged on two sides of the speed regulating box respectively;
and one end of the sucking disc is fixedly connected with the end part of the rotating shaft, and the end surface of the other end of the sucking disc is provided with a vacuum cavity.
As an improvement of the present invention, a suction cup fixing device is further disposed on the rotating assembly, and the suction cup fixing device includes:
the fixed transverse columns are vertically and annularly fixed on the side surface of the suspension arm, and the fixed transverse columns are arranged on the same side of the rotating shaft;
the end, far away from the suspension arm, of the fixed transverse column is fixedly connected with a limiting baffle plate, and the limiting baffle plate is arranged in parallel with the suspension arm;
a locking plate is arranged between the suspension arm and the limiting baffle in parallel, and the locking plate is fixedly connected with the fixed transverse column;
the sliding plate is arranged between the locking plate and the limiting baffle plate and is connected with the fixed transverse column in a sliding mode through an axial bearing;
the sliding member is used for driving the sliding plate to slide on the fixed transverse column, and comprises a sliding motor fixed on the locking plate, a screw rod in transmission connection with the sliding motor, and a sliding nut in matching connection with the screw rod, and the sliding nut is fixed on the sliding plate;
the selective fixing shaft sleeve is sleeved on the peripheral surface of the rotating shaft, the side wall of the selective fixing shaft sleeve is respectively and fixedly connected with the sliding plate and is in clearance fit with the limiting baffle, and a state selective fixing component is also arranged between the selective fixing shaft sleeve and the rotating shaft;
the state selecting and fixing component comprises a first selecting and fixing groove, a second selecting and fixing groove and a third selecting and fixing groove which are equidistantly arranged on the inner wall of the selecting and fixing shaft sleeve, and an elastic rolling ball arranged on the rotating shaft, and the elastic rolling ball is matched and clamped with the first selecting and fixing groove, the second selecting and fixing groove and the third selecting and fixing groove;
the locking cover is positioned between the locking plate and the sliding plate, one end of the opening of the locking cover faces the locking plate, the cross section of the locking cover is in a door shape, and a tooth-shaped surface is arranged on the inner wall of the side edge of the locking cover, which is close to the locking plate;
the rotating shaft is provided with a transmission gear wheel through the matching of a flat key and a key groove, and the transmission gear wheel is in staggered connection with a tooth-shaped surface of the locking cover;
the rotating shaft is provided with a transmission pinion through the matching of a flat key and a key groove, and the transmission pinion is positioned between the transmission gearwheel and the locking plate;
the locking plate is provided with a locking arm, one end of the locking plate, which is far away from the suspension arm, is rotatably provided with a fan-shaped tooth sheet, the fan-shaped tooth sheet is arranged by a first tooth sheet and a second tooth sheet in a back-to-back manner, the first tooth sheet is in staggered connection with the transmission pinion, and the second tooth sheet is in staggered connection with the tooth-shaped surface of the locking plate;
the transmission gear wheel, the tooth surface of the locking plate, the transmission pinion and the sector tooth sheet are arranged at equal intervals, and the distance is equal to the distance between the first fixed groove, the second fixed groove and the third fixed groove;
the locking cover comprises a locking plate, a locking cover and a wedge-shaped slot plate, wherein the locking plate is provided with a locking hole, and the locking cover is provided with a locking hole;
the V-shaped locking plate, the locking cover is close to the side tip of lockplate still annular distribution articulates there are a plurality of V-shaped locking plates, the thickness of V-shaped locking plate is greater than the height of first wedge groove, second wedge groove and be less than the height of square groove.
As an improvement of the present invention, the present invention further comprises:
the controller, the controller is connected with the rotation motor, contain a pressure control circuit who is connected with pressure sensor in the controller, pressure sensor connect in on the output shaft of rotation motor, and be used for gathering the pressure value of rotation motor, pressure control circuit includes: the power supply, the triode, the PMOS tube, the signal receiving end, the first resistor, the second resistor, the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the inductor, the first capacitor, the second capacitor and the third capacitor;
the power supply is respectively connected with the source electrode of the PMOS tube and one end of the first resistor;
the base electrode of the triode is connected with the signal receiving end, the collector electrode of the triode is respectively connected with the other end of the first resistor and the grid electrode of the PMOS tube, and the emitting electrode of the triode is grounded;
a drain electrode of the PMOS tube is respectively connected with one end of the third resistor, one end of the sixth resistor and one end of the fourth resistor, and a diode in series-inverse connection is connected between a source electrode and a grid electrode of the PMOS tube;
the other end of the first resistor is connected with one end of the second resistor;
the other end of the second resistor is connected with one end of the inductor;
the other end of the third resistor is connected with one end of the inductor;
the other end of the fourth resistor is connected with one end of the inductor;
one end of the fifth resistor is connected with the other end of the inductor, and the other end of the fifth resistor and the other end of the sixth resistor are respectively connected with one end of the third capacitor;
one end of the inductor is connected with the first output end of the pressure sensor and the second output end of the pressure sensor respectively, and the other end of the inductor is connected with one end of the second capacitor;
the first capacitor is connected to the first output end of the pressure sensor and the second output end of the pressure sensor;
the other end of the second capacitor is grounded;
the other end of the third capacitor is grounded.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a mobile base according to the present invention;
FIG. 3 is a schematic view of the fixing leg structure of the present invention;
FIG. 4 is another state view of the fixing leg of the present invention;
FIG. 5 is a partial cross-sectional view of the anchoring foot of the present invention;
FIG. 6 is a schematic structural view of the stand bar of the present invention;
FIG. 7 is a schematic view of the construction of the present invention;
FIG. 8 is an enlarged schematic view of FIG. 7 at A;
FIG. 9 is an enlarged schematic view at B of FIG. 7;
FIG. 10 is a schematic structural view of a scalloped segment of the present invention;
FIG. 11 is a state diagram of the suction cup locking device of the present invention;
FIG. 12 is another state diagram of the suction cup locking device of the present invention;
FIG. 13 is a schematic structural view of a wedge-shaped groove plate of the present invention;
FIG. 14 is a control circuit diagram of the present invention.
The components in the figure are:
10-a mobile base, 11-a mobile roller,
20-a vertical column, wherein the vertical column is provided with a plurality of vertical columns,
30-the main power arm, and the main power arm,
40-a power device, wherein the power device,
50-the lifting seat is arranged on the upper portion of the lifting seat,
60-the power-driven arm is connected with the power-driven arm,
70-a suspension arm, wherein the suspension arm is provided with a suspension arm,
80-a hanging-connecting device is arranged,
90-fixed foot, 91-fixed cylinder, 92-threaded rod, 93-first thread, 94-driving motor, 95-synchronous belt, 96-first slide block, 97-first connecting rod, 98-second connecting rod, 911-vertical foot, 912-second thread, 913-second slide block, 914-V-shaped press plate, 915-T-shaped pin, 916-return spring, 917-guide cover and 918-guide hole,
100-rotating component, 101-rotating motor, 102-output shaft, 103-speed regulating box, 104-rotating shaft,
200-sucker fixing device, 201-fixed transverse column, 202-limit baffle, 203-locking plate, 204-sliding plate, 205-axial bearing, 206-sliding component, 206.1-sliding motor, 206.2-screw, 206.3-sliding nut, 207-selection shaft sleeve, 208-state selection component, 208.1-first selection groove, 208.2-second selection groove, 208.3-third selection groove, 208.4-elastic rolling ball, 209-locking cover, 209.1-tooth surface, 210-transmission big gear, 211-transmission small gear, 212-sector tooth piece, 212.1-first tooth piece, 212.2-second tooth piece, 213-wedge groove plate, 213.1-first wedge groove, 213.2-square groove, 213.3-second wedge groove, 214-V-shaped locking plate.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1, a mobile cantilever crane includes:
a movable base 10, the lower end surface of which is provided with a movable roller 11;
the lower end of the upright post 20 is fixed on the upper end surface of the movable base 10, and the upper end is hinged with a main power arm 30;
one end of the driving power arm 30 is hinged to the upper end of the upright post 20 and is fixedly connected with the power device 40, and the other end of the driving power arm is hinged with a hanging seat 50; the power device 40 may be embodied as a cylinder, which is obliquely and fixedly connected to the side wall of the upright post 20,
a slave power arm 60 parallel to the master power arm 30, and both ends of the slave power arm are respectively hinged to the upright column 20 and the hanging seat 50;
the upper end of the suspension arm 70 is rotatably connected with the suspension seat 50, and the lower end of the suspension arm 70 is provided with a suspension device 80.
The working principle of the technical scheme is as follows: when the movable cantilever crane is used, the whole device is firstly moved to the position near a workpiece to be lifted through the movable base 10, and then the workpiece to be lifted is lifted through the power device 40. Because the main power arm 30, the upright post 20 and the power device 40 form a lever structure, wherein the top end of the upright post 20 is equivalent to a fulcrum, the main power arm 30 firstly drives the suspension arm 70 to descend under the driving of the power device 40 and fixes the workpiece by the suspension device 80, after the workpiece is suspended, the power device 40 is reversely driven to suspend the workpiece, and then the whole device together with the workpiece is transferred to a discharging station through the movable base 10 to complete discharging, thereby completing the whole workpiece transferring process.
The beneficial effects of the above technical scheme are that: the movable cantilever provided by the invention can be used for transporting goods or workpieces in a small space, can realize small-range transporting and transferring of the workpieces without a gantry crane or a rail crane, and has the advantages of wide application range and low use cost.
Referring to fig. 2 to 6, in an embodiment of the present invention, the two sides of the moving base 10 are further symmetrically provided with fixing legs 90, and the fixing legs 90 include:
the fixed cylinder 91 is a cylindrical structure with an open lower end and is vertically arranged on two sides of the lower end face of the movable base 10;
the threaded rod 92 is rotatably arranged in the inner cavity of the fixed cylinder 91, and a first thread 93 is arranged on the peripheral surface of the threaded rod 92;
the driving motor 94 is arranged in the center of the lower end face of the movable base 10, and the driving motor 94 is in transmission connection with the threaded rods 92 on two sides through a synchronous belt 95;
a first slide block 96 which is arranged in the fixed cylinder 91 and is matched and connected with the first thread 93 of the threaded rod 92;
a plurality of first links 97, one end of each of which is hinged to the outer side wall of the first slider 96, and the other end of each of which is hinged to the second link 98;
one end of the second connecting rod 98 is hinged to the outer wall of the fixed cylinder 91, and the lower side of the other end is fixedly connected with a stand 911.
In one embodiment of the present invention, the lower end portion of the threaded rod 92 is a hollow structure and is further provided with a second thread 912 on the outer peripheral surface, and the second thread 912 is located below the fixing sleeve 910 and has the same direction as the first thread 93;
a second sliding block 913 disposed in the fixing cylinder 91 and coupled to the second thread 912 of the threaded rod 92;
a V-shaped pressing plate 914, the middle part of which is hinged inside the threaded rod 92, one side of which penetrates through the side wall of the threaded rod 92 and extends to the outside, and the other side of which is arranged in the inner cavity of the threaded rod 92;
and the T-shaped plug pin 915 is slidably arranged inside the threaded rod 92 and is positioned below the V-shaped pressing plate 914, and a return spring 916 is sleeved on the T-shaped plug pin 915.
A guide cover 917 is fixedly connected to the lower end surface of the threaded rod 92, a guide hole 918 is formed in the center of the guide cover 917, and the T-shaped pin 915 is inserted into the guide hole 918.
The lower end surface of the stand 911 is planar, and the lower end surface of the T-shaped pin 915 is conical.
The working principle and the beneficial effects of the technical scheme are as follows: the movable cantilever crane needs to fix the movable base 10 when lifting and unloading the workpiece, and moves under the action of the movable roller 11 when being placed in the processes of lifting and unloading the workpiece, so that the workpiece lifting is influenced, and unnecessary danger is avoided. Therefore, the fixing device is installed on the movable base 10 and is kept still when the movable cantilever crane hoists or unloads the workpiece. The fixing device has an active state and an idle state.
In the idle state: under the driving of the driving motor 94, the first slider 86 and the second slider 913 on the threaded rod 92 are at the highest positions, and at this time, the second link 98 is in an inclined state (i.e. the outer end of the second link 98 tilts upwards) under the action of the first link 97, so that a certain distance exists between the stand 911 and the ground. In addition, the T-shaped prong 915 is spaced from the ground by the return spring 916. Therefore, in the idle state, only the moving roller 11 on the moving base 10 contacts with the ground.
In the working state: under the driving of the driving motor 94, the first slide block 86 and the second slide block 913 on the threaded rod 92 are at the lowest positions, and at the same time, the second link 98 is in the horizontal state under the action of the first link 97, so that the stand 911 is in contact with the ground. In addition, the V-shaped pressing plate 914 is driven to rotate during the downward sliding of the second sliding block 913, and during the rotation, the T-shaped pins 915 are pressed downward to make the T-shaped pins 915 contact with the ground. Therefore, in the working state, the vertical pins 911 and the T-shaped pins 915 on the movable base 10 are in contact with the ground, so as to fix the movable cantilever crane and prevent the movable cantilever crane from moving.
Referring to fig. 7-13, in one embodiment of the present invention, the suspension device 80 on the mobile jib crane is a suction cup, and the suction cup is disposed at the lower end of the jib arm 70 through a rotating assembly 100, and the rotating assembly 100 includes:
the rotating motor 101 is fixedly arranged on one side of the lower end of the suspension arm 70, and an output shaft 102 of the rotating motor 101 penetrates to the other side of the suspension arm 70;
a speed-adjusting box 103 coaxially and rotatably connected to the output shaft 102;
the rotating shaft 104 is coaxially connected with the speed regulating box 103 in a transmission way, and the rotating shaft 104 and the output shaft 102 are respectively arranged on two sides of the speed regulating box 103;
and one end of the sucking disc is fixedly connected with the end part of the rotating shaft 104, and the end surface of the other end of the sucking disc is provided with a vacuum cavity.
Still be equipped with sucking disc fixing device 200 on the runner assembly 100, sucking disc fixing device 200 includes:
the fixed transverse columns 201 are vertically and annularly fixed on the side surface of the suspension arm 70, and the fixed transverse columns 201 are on the same side with the rotating shaft 104;
a limit baffle 202, wherein one end of the fixed transverse column 201, which is far away from the suspension arm 70, is fixedly connected with the limit baffle 202, and the limit baffle 202 is arranged in parallel with the suspension arm 70;
a locking plate 203 is arranged between the suspension arm 70 and the limit baffle 202 in parallel, and the locking plate 203 is fixedly connected with the fixed transverse column 201;
a sliding plate 204 is further arranged between the locking plate 203 and the limit baffle 202, and the sliding plate 204 is connected with the fixed transverse column 201 in a sliding mode through an axial bearing 205;
a sliding member 206 for driving the sliding plate 204 to slide on the fixed cross-post 201, wherein the sliding member 206 comprises a sliding motor 206.1 fixed on the locking plate 203, a screw rod 206.2 in transmission connection with the sliding motor 206.1, and a sliding nut 206.3 in fit connection with the screw rod 206.2, and the sliding nut 206.3 is fixed on the sliding plate 204;
a selective fixed shaft sleeve 207 sleeved on the outer peripheral surface of the rotating shaft 104, wherein the side walls of the selective fixed shaft sleeve 207 are respectively fixedly connected with the sliding plate 204 and in clearance fit with the limit baffle 202, and a state selective member 208 is further arranged between the selective fixed shaft sleeve 207 and the rotating shaft 104;
the state selecting and fixing component 208 comprises a first selecting and fixing groove 208.1, a second selecting and fixing groove 208.2, a third selecting and fixing groove 208.3 which are equidistantly arranged on the inner wall of the selecting and fixing shaft sleeve 207, and an elastic rolling ball 208.4 which is arranged on the rotating shaft 104, wherein the elastic rolling ball 208.4 is matched and clamped with the first selecting and fixing groove 208.1, the second selecting and fixing groove 208.2 and the third selecting and fixing groove 208.3;
a locking cover 209, wherein the rotating shaft 104 is further sleeved with a locking cover 209 with an opening at one end, the locking cover 209 is positioned between the locking plate 203 and the sliding plate 204, the opening end of the locking cover 209 faces the locking plate 203, the cross section of the locking cover 209 is in a shape of a door, and a toothed surface 209.1 is arranged on the inner wall of the side edge of the locking cover, which is close to the locking plate 203;
the rotating shaft 104 is provided with a driving gearwheel 210 through the matching of a flat key and a key slot, and the driving gearwheel 210 is in staggered connection with a toothed surface 209.1 of the locking cover 209;
the rotating shaft 104 is provided with a transmission pinion 211 through the matching of a flat key and a key slot, and the transmission pinion 211 is positioned between the transmission gearwheel 210 and the locking plate 203;
a sector-shaped toothed sheet 212 is rotatably arranged at one end, far away from the suspension arm 70, of the locking plate 203, the sector-shaped toothed sheet 212 is arranged by a first toothed sheet 212.1 and a second toothed sheet 212.2 in a back-to-back manner, the first toothed sheet 212.1 is in staggered connection with the transmission pinion 211, and the second toothed sheet 212.2 is in staggered connection with a toothed surface of the locking plate 203;
the transmission gearwheel 210, the tooth-shaped surface 209.1 of the locking cover 209, the transmission pinion 211 and the sector tooth piece 212 are arranged at equal intervals, and the distance is equal to the distance between the first selection groove 208.1, the second selection groove 208.2 and the third selection groove 208.3;
a plurality of wedge-shaped groove plates 213 are annularly distributed on one end of the locking plate 203 facing the locking cover 209, and a first wedge-shaped groove 213.1, a square groove 213.2 and a second wedge-shaped groove 213.3 are sequentially formed in the wedge-shaped groove plates 213;
the locking cover 209 is close to the side end of the locking plate 203 and is also annularly distributed and hinged with a plurality of V-shaped locking plates 214, and the thickness of the V-shaped locking plates 214 is greater than the height of the first wedge-shaped groove 213.1 and the second wedge-shaped groove 213.3 and is less than the height of the square groove 213.2.
The working principle and the beneficial effects of the technical scheme are as follows: in general, a suction cup type suspension device is directly installed on the suspension arm 70 to suck and suspend a workpiece, and this suspension method cannot rotate a suspension position of the workpiece according to a shape of a tool, and cannot rotate to select a placement surface when the workpiece is transferred to a next station. Therefore, the rotating motor 101 is installed on the hanging device 80 (suction cup) and oriented horizontally by one person, and the rotating motor 101 can rotate the suction cup through the transmission of the speed adjusting box 103 and the rotating shaft 104, thereby adjusting the selection of the suction position and the placing surface. When it has the rotating motor 101, the fixation during the transfer also becomes a problem, otherwise the rotating motor 101 is extremely easy to be damaged. Thus, a suction cup fixing device 200 is further provided on the rotating assembly 100.
The suction cup fixing device 200 functions to have a fixed state without affecting the rotation of the suction cup, thereby freeing the rotation motor 101 when the suction cup needs to be in the fixed state. Under the action of the suction cup fixing device 200, the suction cup can have three working modes: a quick lock mode, a smooth lock mode, and a rotational movement mode, and the switching of these three operation modes is mainly performed by the state selecting member 208.
Fast locking mode: as shown in fig. 8, under the driving of the sliding plate 204, the elastic ball 208.4 is located in the first selected groove 208.1, the tooth-shaped surface 209.1 on the locking cover 209 is engaged with the sector-shaped tooth piece 212, and at the same time, the sector-shaped tooth piece 212 is engaged with the driving pinion 211, because the sector-shaped tooth piece 212 is composed of tooth pieces with different radii, the rotating motor 101 drives the locking cover 209 to rotate through the tooth surface engagement of the sector-shaped tooth piece 212, the driving pinion 211 and the tooth-shaped surface 209.1, and after the locking cover 209 rotates to a certain angle (30 degrees), the V-shaped locking plate 214 is inserted into the second wedge-shaped groove 213.3 of the wedge-shaped groove plate 213 and locked through the static friction force generated. The quick locking mode can realize the purposes of quick locking and quick transferring under the driving of the sliding motor 206.1 and the rotating motor 101 when a workpiece with light weight is sucked.
Smooth locking mode: as shown in fig. 8, under the driving of the sliding plate 204, the elastic rolling ball 208.4 is located in the third selective groove 208.3, the toothed surface 209.1 on the locking cover 209 is directly engaged with the driving gearwheel 210, the rotating motor 101 is engaged with the driving locking cover 209 through the driving gearwheel 210 to rotate, and after the locking cover 209 rotates to a certain angle (30 degrees), the V-shaped locking plate 214 is inserted into the first wedge-shaped groove 213.1 of the wedge-shaped groove plate 213 and is locked through the generated static friction force. The stable locking mode can realize the purposes of stable locking and stable and safe transfer under the driving of the sliding motor 206.1 and the rotating motor 101 when absorbing workpieces with light weight.
The rotary motion mode is as follows: as shown in fig. 8, under the driving of the sliding plate 204, the elastic ball 208.4 is in the second fixed groove 208.2, and the toothed surface 209.1 on the locking cover 209 is in idle state and is not engaged with any device. The rotation mode is that when the suction position of the suction cup needs to be adjusted, the rotation motor 101 drives the suction cup to rotate, and the suction cup is not interfered by other components.
As shown in fig. 14, in one embodiment, the method further includes:
the controller, the controller is connected with rotating motor 101, contain a pressure control circuit who is connected with pressure sensor in the controller, pressure sensor connect in rotating motor 101's output shaft is last, and be used for gathering rotating motor 101's pressure value, pressure control circuit includes: the power supply, a triode Q1, a PMOS tube Q2, a signal receiving end IO1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, an inductor M1, a first capacitor F1, a second capacitor F2 and a third capacitor F3;
the power supply is respectively connected with the source electrode of the PMOS transistor Q2 and one end of the first resistor R1;
the base electrode of the triode Q1 is connected with a signal receiving end IO1, the collector electrode of the triode Q1 is respectively connected with the other end of the first resistor R1 and the grid electrode of the PMOS tube Q2, and the emitter electrode of the triode Q1 is grounded;
a drain electrode of the PMOS transistor Q2 is respectively connected with one end of the third resistor R3, one end of the sixth resistor R6 and one end of the fourth resistor R4, and a diode connected in series in an inverted manner is connected between a source electrode and a gate electrode of the PMOS transistor Q2;
the other end of the first resistor R1 is connected with one end of the second resistor R2;
the other end of the second resistor R2 is connected with one end of the inductor M1;
the other end of the third resistor R3 is connected with one end of the inductor M1;
the other end of the fourth resistor R4 is connected with one end of the inductor M1;
one end of the fifth resistor R5 is connected to the other end of the inductor M1, and the other ends of the fifth resistor R5 and the sixth resistor R6 are respectively connected to one end of the third capacitor F3;
one end of the inductor M1 is connected to the first output end of the pressure sensor and the second output end of the pressure sensor, respectively, and the other end of the inductor M1 is connected to one end of the second capacitor F2;
the first capacitor F1 is connected to the first output end of the pressure sensor and the second output end of the pressure sensor;
the other end of the second capacitor F2 is grounded;
the other end of the third capacitor F3 is connected to ground.
The working principle and the beneficial effects of the technical scheme are as follows: when the temperature values connected from the first and second output ends of the pressure sensor are lower than the threshold value, the signal receiving end IO1 keeps low level, the transistor Q1 is not conducted, the resistor R2 is connected to the circuit, the obtained divided voltage value is filtered by pi-type filtering and then passes through the fifth resistor R5 to filter out the interfering high-frequency signal, when the pressure values connected from the first and second output ends of the pressure sensor are higher than the threshold value, the signal receiving end IO1 outputs high level, the transistor Q2 is conducted, the PMOS transistor Q2 is conducted, the third resistor R3 and the fourth resistor R4 are connected to the circuit, the resistance values of the third resistor R3 and the fourth resistor R4 are far smaller than that of the second resistor R2, when the pressure values of the pressure sensor are increased and the resistance values of T1 and T2 are reduced, a sufficiently high voltage Vout can be output, the pressure accuracy of the pressure can be ensured, when the pressure of the output shaft of the rotating motor 101 is suddenly increased to a certain threshold value, the accurate pressure value can be obtained, the controller will issue a warning.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A mobile cantilever crane, comprising:
a movable base (10), the lower end surface of which is provided with a movable roller (11);
the lower end of the upright post (20) is fixed on the upper end surface of the movable base (10), and the upper end of the upright post is hinged with a main power arm (30);
one end of the main power arm (30) is hinged to the upper end of the upright post (20) and is fixedly connected with the power device (40), and the other end of the main power arm is hinged with a hanging seat (50);
the auxiliary power arm (60) is parallel to the main power arm (30), and two ends of the auxiliary power arm are respectively hinged with the upright post (20) and the hanging seat (50);
the upper end of the suspension arm (70) is rotatably connected with the suspension seat (50), and the lower end of the suspension arm (70) is provided with a suspension connection device (80);
remove base (10) both sides still the symmetry and be equipped with fixed foot (90), fixed foot (90) include:
the fixed cylinder (91) is of a cylindrical structure with an opening at the lower end and is vertically arranged on two sides of the lower end surface of the movable base (10);
the threaded rod (92) is rotatably arranged in the inner cavity of the fixed cylinder (91), and first threads (93) are arranged on the peripheral surface of the threaded rod (92);
the driving motor (94) is arranged in the center of the lower end face of the movable base (10), and the driving motor (94) is in transmission connection with the threaded rods (92) on the two sides through a synchronous belt (95);
the first sliding block (96) is arranged in the fixed barrel (91) and is in fit connection with the first thread (93) of the threaded rod (92);
one end of each first connecting rod (97) is hinged to the outer side wall of the first sliding block (96), and the other end of each first connecting rod (97) is hinged to the second connecting rod (98);
and one end of the second connecting rod (98) is hinged on the outer wall of the fixed cylinder (91), and the lower side of the other end of the second connecting rod is fixedly connected with a stand (911).
2. A mobile cantilever crane according to claim 1, wherein: the lower end part of the threaded rod (92) is of a cavity structure, a second thread (912) is further arranged on the outer peripheral surface of the threaded rod, and the second thread (912) is located below the fixed sleeve (910) and has the same direction as the first thread (93);
the second sliding block (913) is arranged in the fixed cylinder (91) and is in fit connection with the second thread (912) of the threaded rod (92);
the middle part of the V-shaped pressing plate (914) is hinged to the inner part of the threaded rod (92), one side of the V-shaped pressing plate penetrates through the side wall of the threaded rod (92) and extends to the outside, and the other side of the V-shaped pressing plate is arranged in the inner cavity of the threaded rod (92);
the T-shaped plug pin (915) is arranged in the threaded rod (92) in a sliding mode and located below the V-shaped pressing plate (914), and a return spring (916) is further sleeved on the T-shaped plug pin (915).
3. A mobile cantilever crane according to claim 2, wherein: the lower end face of the threaded rod (92) is fixedly connected with a guide cover (917), the center of the guide cover (917) is provided with a guide hole (918), and the T-shaped plug pin (915) is inserted into the guide hole (918).
4. A mobile cantilever crane according to claim 3, wherein: the lower end face of the stand pin (911) is planar, and the lower end face of the T-shaped pin (915) is conical.
5. A mobile cantilever crane according to claim 1, wherein: and a power device (40) connected with the main power arm (30) is an air cylinder which is obliquely and fixedly connected on the side wall of the upright post (20).
6. A mobile cantilever crane according to claim 1, wherein: the hanging device (80) on the movable cantilever crane is a sucker which is arranged at the lower end of the cantilever arm (70) through a rotating assembly (100), and the rotating assembly (100) comprises:
the rotating motor (101) is fixedly arranged on one side of the lower end of the suspension arm (70), and an output shaft (102) of the rotating motor (101) penetrates to the other side of the suspension arm (70);
a speed-adjusting box (103) which is coaxially and rotationally connected with the output shaft (102);
the rotating shaft (104) is in coaxial transmission connection with the speed regulating box (103), and the rotating shaft (104) and the output shaft (102) are arranged on two sides of the speed regulating box (103) respectively;
and one end of the sucking disc is fixedly connected with the end part of the rotating shaft (104), and the end surface of the other end of the sucking disc is provided with a vacuum cavity.
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| CN201911302672.7A CN110980553B (en) | 2019-12-17 | 2019-12-17 | Movable cantilever crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911302672.7A CN110980553B (en) | 2019-12-17 | 2019-12-17 | Movable cantilever crane |
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| CN110980553B true CN110980553B (en) | 2020-12-18 |
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| CN109552979A (en) * | 2018-11-07 | 2019-04-02 | 合肥福春机械有限公司 | A kind of Novel sheet metal plate vacuum suction crane charging equipment and its working principle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19634160A1 (en) * | 1996-08-23 | 1998-02-26 | Fred Koch | Hoist with lateral reach e.g. for lifting cooking vessel for catering |
| CN201415911Y (en) * | 2009-03-10 | 2010-03-03 | 吕晓光 | Strong vacuum sucking device |
| CN207002061U (en) * | 2017-07-28 | 2018-02-13 | 赵洁 | A kind of movable suspending arm for indoor use is hung |
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| CN110980553A (en) | 2020-04-10 |
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Effective date of registration: 20210705 Address after: 210000 9 Longtan Avenue, Qixia District, Nanjing, Jiangsu Province Patentee after: Nanjing Port Longtan container Co.,Ltd. Address before: No.42 Lijiang Road, Yancheng Economic and Technological Development Zone, Jiangsu Province 224000 Patentee before: JIANGSU YUBO AUTOMATION EQUIPMENT Co.,Ltd. |
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