CN102587667B - Arm support structure, arm support device and concrete pump truck - Google Patents
Arm support structure, arm support device and concrete pump truck Download PDFInfo
- Publication number
- CN102587667B CN102587667B CN201210057507.1A CN201210057507A CN102587667B CN 102587667 B CN102587667 B CN 102587667B CN 201210057507 A CN201210057507 A CN 201210057507A CN 102587667 B CN102587667 B CN 102587667B
- Authority
- CN
- China
- Prior art keywords
- drive
- wire rope
- arm section
- rotate
- jib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Jib Cranes (AREA)
Abstract
The invention provides an arm support structure, which comprises a first arm section and a second arm section, wherein the first arm section and the second arm section are connected by a spindle; a hinged axis of the spindle and the end part of the arm support structure is vertically arranged; a driving device and a first driving wheel are installed on the first arm section; a second driving wheel can be rotatably installed on the spindle; the second arm section and the second driving wheel are fixedly connected; each of the first driving wheel and the second driving wheel is respectively provided with a driving mechanism; the driving device drives the first driving wheel to rotate; and the first driving wheel drives the second driving wheel and the second arm section to rotate around the spindle by the driving mechanism. The invention also provides an arm support device and a concrete pump truck. According to the technical scheme provided by the invention, a function that the arm support horizontally rotates is realized, and the cloth flexibility is increased.
Description
Technical field
The present invention relates to engineering machinery field, more specifically, relate to a kind of jib structure, there is the boom device of this jib structure and there is the concrete mixer of this boom device.
Background technology
At present, concrete mixer generally comprises running gear, pumping installations and boom device.Running gear is mainly used in the transfer of concrete pumping equipment in work-yard, and pumping installations and boom device are mainly used in needing concrete place by concrete conveyance to work progress.
Boom device comprises more piece jib hinged successively, mainly rotates in perpendicular between adjacent two jibs, can not realize horizontally rotating; To horizontally rotate, floating bearing can only be driven to rotate by rotary motor and reductor, to drive turntable to rotate, thus realize horizontally rotating of boom device.Because boom device own vol and weight are very large, this to horizontally rotate its inertia of mode comparatively large, not only increases pump truck operating power consumption, and also have adverse effect to the application life of whole jib.
In existing boom device, the relative motion between all jibs is only limitted to the rotation in perpendicular, makes the movement locus of jib be restricted like this, affects the cloth flexibility of concrete mixer, there is cloth dead point, affect efficiency of construction.
Summary of the invention
In order to solve the problems referred to above of prior art, the first object of the present invention is to provide a kind of jib structure, and this jib structure can realize horizontally rotating, thus improves cloth flexibility.The invention allows for a kind of boom device comprising said arm shelf structure, and apply the concrete mixer of this boom device.
In order to realize the first object of the present invention, the invention provides a kind of jib structure, comprise the first arm section and the second arm section that are connected by rotating shaft, described rotating shaft is vertical with the hinge axes of this jib structure end to be arranged, drive unit and the first drive are installed on described first arm section, second drive is rotatably installed on described rotating shaft, described second arm section is fixedly connected with described second drive, described first drive and described second drive are provided with transmission mechanism, described drive unit drives described first drive to rotate, described first drive drives described second drive and described second arm section around described axis of rotation by described transmission mechanism.
For connecting the rotating shaft of the first arm section and the second arm section in the present invention, vertically with the hinge axes of this jib structure end to arrange, by two drives and the transmission mechanism for carry-over moment, the second arm section can be driven relative to the first arm section at horizontal rotation in surface.Therefore, this jib structure can rotate in perpendicular around the jointed shaft of its end on the one hand, and its second arm section can be rotated relative to the first arm section around the shaft in horizontal plane, thus improve the cloth flexibility of jib, avoid in prior art and drive whole boom device to horizontally rotate existing technological deficiency, its flexibility horizontally rotating operation is comparatively strong, and energy consumption is less.
In technique scheme, preferably, described transmission mechanism is wire rope, and described steel wire tensioning on described first drive and described second drive, and can drive described second drive and described second arm section to rotate in-90 ° ~ 90 ° angular ranges around described rotating shaft.Wire rope substantially increases drive unit and the drive degree of freedom in space layout as transmission mechanism, wire rope also has very high tensile strength simultaneously, jib can be met and horizontally rotating in process the reaction force acted on a steel cord, ensure job safety, second arm section rotates the cloth degree of freedom that can meet jib routine work around the shaft in-90 ° ~ 90 ° angular ranges, thus improves the cloth flexibility of jib.
In technique scheme, preferably, described wire rope is fixed on described first drive by the first locked point, is fixed on described second drive by the second locked point.Due to the smooth surface of drive, and the frictional force between wire rope is less, carrying out skidding accident to occur in transmission process, wire rope is separately fixed on two drives by locked point, avoid the situation generation that wire rope skids, ensure that wire rope stably carries out transmission.In specific design process, can arrange steel cable, also can arrange two wire rope, the two ends of two wire rope are fixed on two drives respectively by two locked points.
In technique scheme, preferably, described first drive is identical with the external diameter of described second drive, in an initial condition, distance between described first locked point and described second locked point is S=L+2R, wherein, L is the center to center distance between the first drive and the second drive, and R is the radius of the first drive.Under original state, first arm section and the second arm section place are point-blank, namely jib structure does not horizontally rotate, when the first drive rotates counterclockwise 90 °, first locked point moves to the first drive minimum point by initial bit, second locked point moves to the second drive peak by initial bit simultaneously, realizes the second rotation of arm section within the scope of 0 ~ 90 °; When first drive rotates clockwise 90 °, the first locked point is back to initial bit, and the second locked point is back to initial bit; When the first drive rotates clockwise 90 ° by initial bit, first locked point moves to the first drive peak by initial bit, second locked point is driven the minimum point being moved to the second drive by initial bit simultaneously, realizes the second rotation of arm section within the scope of 0 ~-90 °.
In technique scheme, preferably, described transmission mechanism is wire rope, and described steel wire tensioning on described first drive and described second drive, and can drive described second drive and described second arm section to rotate in-180 ° ~ 180 angular ranges around described rotating shaft.Wire rope substantially increases drive unit and the drive degree of freedom in space layout as transmission mechanism, wire rope also has very high tensile strength simultaneously, jib can be met and horizontally rotating in process the reaction force acted on a steel cord, ensure production safety, second arm section rotates the cloth freedom that can meet jib full angle in horizontal plane around the shaft in-180 ° ~ 180 ° angular ranges, eliminate in prior art the mode driving whole boom device to horizontally rotate completely, save energy consumption, reduce production safety hidden danger.
In technique scheme, preferably, described wire rope comprises by the first wire rope of described first drive and described second drive tensioning and the second wire rope, and described first wire rope is parallel with described second wire rope: described first wire rope can drive described second drive and described second arm section to rotate within the scope of 0 ~-180 ° around described rotating shaft by initial position; Described second wire rope can drive described second drive and described second arm section to rotate within the scope of 0 ~ 180 ° around described rotating shaft by initial position.Like this, when the external diameter of the first drive and the second drive is identical or different, the second arm section can be met and rotate in-180 ° ~ 180 ° angular ranges in horizontal plane around the shaft.
In technique scheme, preferably, in an initial condition: the length of described first wirerope-winding on described second drive is not less than the half of described second drive girth, the length of described first wirerope-winding on described first drive is not less than the half of described second drive girth; The length of described second wirerope-winding on described second drive is not less than the half of described second drive girth, and the length of described second wirerope-winding on described first drive is not less than the half of described second drive girth.Like this, when the external diameter of the first drive and the second drive is identical or different, still can meets the second arm section and rotate in-180 ° ~ 180 ° angular ranges in horizontal plane around the shaft.
In technique scheme, preferably, described transmission mechanism is chain, and described first drive and described second drive are respectively the first sprocket wheel and the second sprocket wheel, and described transmission mechanism is set in described first sprocket wheel and described second sprocket wheel.Adopt the kind of drive of chain sprocket, the slippery conditions avoided in wire rope gearing occurs, and also just avoid the operation be fixed on by wire rope by locked point on drive, operation is more simple, ensures that the safety of producing is carried out smoothly simultaneously.
Present invention also offers a kind of boom device, comprise the joint arm that more piece is hinged successively, at least one joint joint arm is described jib structure.Like this, boom device just can possess the function swung in horizontal plane, avoids using turntable to regulate the horizontal level of jib, increases the cloth degree of freedom of boom device and pump truck.
Present invention also offers a kind of concrete mixer, comprise above-mentioned boom device.
By jib structure provided by the invention, boom device and concrete mixer, this jib structure can rotate in perpendicular around the jointed shaft of its end on the one hand, and around above-mentioned rotating shaft at horizontal rotation in surface, thus can improve the cloth flexibility of jib; Adopt wire rope to carry out transmission in the present invention, drive unit and drive have larger degree of freedom in space layout, considerably increase the flexibility of jib general arrangement; The realization of jib action does not need connecting rod, alleviates the load of drive unit; Do when horizontally rotating when not needing jib, wire rope can lock horizontally rotating of jib, and boom device provided by the invention can meet the functional requirement of existing jib completely.
Accompanying drawing explanation
Fig. 1 is the structural representation of boom device one embodiment according to concrete mixer of the present invention;
Fig. 2 is the enlarged drawing in A portion in Fig. 1;
Fig. 3 is the structural representation according to jib structure one embodiment of the present invention;
Fig. 4 A is the original state of jib structure shown in Fig. 3 schematic diagram;
Fig. 4 B is that in Fig. 3, the second arm section to be turned clockwise the structural representation after 90 ° by original state;
Fig. 4 C is that in Fig. 3, the second arm section is rotated counterclockwise the structural representation after 90 ° by original state;
Fig. 5 is the structural representation according to the another embodiment of jib structure of the present invention;
Fig. 5 A, Fig. 5 B are the schematic diagrames that structure shown in Fig. 5 is in original state;
Fig. 6 A, Fig. 6 B are that in Fig. 5, the second arm section is rotated counterclockwise the schematic diagram after 180 ° by original state;
Fig. 7 A, Fig. 7 B are the original state schematic diagrames according to a jib structure of the present invention embodiment again;
Fig. 8 A, Fig. 8 B are Fig. 7 A, the second arm section shown in Fig. 7 B is turned clockwise by the original state structural representation of 180 °;
Fig. 9 is the structural representation according to jib structure of the present invention 4th embodiment.
Wherein, the corresponding relation in Fig. 1 to Fig. 9 between Reference numeral and component names is:
1 rotating shaft 2 first arm section 3 second arm section 4 motor
5 first drive 6 wire rope 60 groovings
61 first wire rope 62 second wire rope 7 second drives
8 reductor 11 through holes
100 first segment arm 200 second section arms 300 Section of three arm
Section 400 the 4th, arm 500 Section of five arm 600 turntable
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
As shown in Figure 1 to Figure 3, the invention provides a kind of boom device, comprise more piece five and save joint arm hinged successively, first segment arm 100, second section arm 200, Section of three arm 300, Section of four arm 400 and Section of five arm 500 are hinged successively, and wherein the butt of first segment arm 100 is hinged on turntable 600, the other end is hinged with second section arm 200, Section of three arm 300, Section of four arm 400 and Section of five arm 500 successively, and at least Section of four arm is the jib structure shown in Fig. 3.
This jib structure comprises the first arm section 2 and the second arm section 3 connected by rotating shaft 1, rotating shaft 1 is vertical with the hinge axes of this jib structure end to be arranged, drive unit and the first drive 5 are installed on the first arm section 2, second drive 7 is rotatably installed on rotating shaft 1, second arm section 3 is fixedly connected with the second drive 7, first drive 5 and the second drive 7 are provided with transmission mechanism, drive unit drives the first drive 5 to rotate, and the first drive 5 drives the second drive 7 and the second arm section 31 to rotate around the shaft by transmission mechanism.
Arrange because rotating shaft 1 is vertical with the hinge axes of this jib structure end, this jib structure can rotate in perpendicular around the jointed shaft of its end on the one hand, and its second arm section 3 can 1 be rotated relative to the first arm section 2 around the shaft in horizontal plane, thus improve the cloth flexibility of jib, avoid in prior art and drive whole boom device to horizontally rotate existing technological deficiency, its flexibility horizontally rotating operation is comparatively strong, and energy consumption is less.
In actual application, transmission mechanism is wire rope 6, and wire rope 6 is stretched on the first drive 5 and the second drive 7, and the second drive 7 and the second arm section 3 can be driven 1 to rotate in-90 ° ~ 90 ° angular ranges around the shaft.
The circumference of described first drive 5 and described second drive 7 is provided with the gathering sill 60 holding described wire rope 6.Gathering sill 60 can make wire rope carry out transmission more reposefully, ensures the safety of jib operation.
Described drive unit can be motor 4, can also be motor or hydraulic cylinder.Also be provided with reductor 8 between described motor 4 and described first drive 5, the power of described motor 4 is by being passed to described first drive 5 after reductor 8 deceleration.Reductor can play the effect reducing rotating speed, increase moment of torsion, makes the first drive 5 obtain larger driving force, drives the second drive 7 and the second arm section 1 to rotate around the shaft.
Described rotating shaft 1 offers along its axially extended through hole 11, can install carrier pipe (not shown) in described through hole 11.Like this, be convenient to the layout of carrier pipe on jib structure, save space.
As shown in Fig. 4 A, Fig. 4 B, Fig. 4 C, at the first drive 5 wire rope 6 together with the second drive 7 is wound around, and wire rope 6 is fixed on the first drive 5 by the first locked point A, is fixed on the second drive 7 by the second locked point B.Due to the smooth surface of drive, and the frictional force between wire rope is less, carrying out skidding accident to occur in transmission process, wire rope is separately fixed on two drives by locked point, avoid the situation generation that wire rope skids, ensure that wire rope stably carries out transmission.
As shown in Figure 4 A, be the initial position schematic diagram of shown jib structure.First drive 5 is identical with the external diameter of the second drive 7, in an initial condition, now the first arm section 2 of this jib structure and the second arm section 3 are horizontally disposed with, distance between first locked point A and the second locked point B is S=L+2R, wherein, L is the center to center distance between the first drive 5 and the second drive 7, and R is that the radius of the first drive 5 is (because the external diameter of the first drive 5 is identical with the external diameter of the second drive 7, now, R also represents the external diameter of the second drive 7).
As shown in Figure 4 B, the second arm section 3 to be turned clockwise the structural representation after 90 ° by original state.Now, first locked point A is turned clockwise 1/4 week by initial position, move to the position shown in Fig. 4 B, second locked point B rotates clockwise 1/4 week by initial position, move to the position shown in Fig. 4 B, in the process, first drive 5 drives the second drive 7 and the second arm section 31 to turn clockwise 90 ° around the shaft by wire rope 6, namely (definition initial position is zero degree to achieve the second rotation of arm section 3 in horizontal plane within the scope of 0 ~-90 °, clockwise turn to negative angle, be rotated counterclockwise as positive-angle).
As shown in Figure 4 C, the second arm section 3 is rotated counterclockwise the structural representation after 90 ° by original state.Now, first locked point A rotates counterclockwise 1/4 week by initial position, move to the position shown in Fig. 4 C, second locked point B rotates counterclockwise 1/4 week by initial position, move to the position shown in Fig. 4 C, in the process, the first drive 5 drives the second drive 7 and the second arm section 31 to be rotated counterclockwise 90 ° around the shaft by wire rope 6, namely achieves the second rotation of arm section 3 in horizontal plane within the scope of 0 ~ 90 °.
By the jib structure that Fig. 3 provides, wire rope substantially increases drive unit and the transmission device degree of freedom in space layout as transmission mechanism, wire rope also has very high tensile strength simultaneously, jib can be met and horizontally rotating in process the reaction force acted on a steel cord, ensure production safety, second arm section rotates the cloth degree of freedom that can meet jib routine work around the shaft in-90 ° ~ 90 ° angular ranges, avoids driving capstan head to horizontally rotate to drive jib.
Realizing, in the process that jib rotates in-90 ° ~ 90 ° angular ranges, only to arrange steel cable, as described in embodiment above.Certainly, also can arrange two wire rope, the two ends of two wire rope are fixed on two drives respectively by two locked points.
As shown in Figure 4 A, it is also understood that be the first locked point A's and the second locked point B between be provided with two sections of wire rope, one section of wire rope is connected the first locked point A and the second locked point B by the top of the first drive 5 with the top of the second drive 7; Another section of wire rope is connected the first locked point A and the second locked point B by the bottom of the first drive 5 with the bottom of the second drive 7, and two sections of wire rope are symmetrical arranged up and down, jointly plays the effect of transmitting power between the first drive 5 and the second drive 7.
Those skilled in the art it should also be understood that, in the structure shown in Fig. 4 A, because one whole wire rope is separately fixed on the first drive 5 and the second drive 7 by the first locked point A and the second locked point B, also the two ends with regard to being equivalent to two wire rope are separately fixed at the first locked point A and the second locked point B, and employing steel cable is set on the first drive 5 and the second drive 7 and employing two wire rope are separately fixed at the first locked point A and the second locked point B has equal technique effect.
In addition, wire rope described in above-described embodiment realizes jib by two fixed points and rotates in-90 ° ~ 90 ° angular ranges, and be not used in the extreme position that defining arm frame can only turn to-90 ° or 90 °, but in order to show the rotating scope of jib, as motor can pass through the first drive 5, wire rope 6, second drive 7 drives the second jib to be rotated counterclockwise 30 °, 40 °, 45 °, 60 ° or 75 ° are angularly, also 30 ° can be turned clockwise by driven by motor second jib, 40 °, 45 °, 60 ° or 75 ° are angularly, the angular displacement that the angle that jib rotates can be rotated by motor is determined.Because wire rope is fixed on corresponding drive by locked point, need to control the output of motor, rotate the damage to locked point structure when being greater than 90 ° to avoid drive, the stability that raising jib structure horizontally rotates and reliability.Preferably, motor can select servomotor.
In another detailed description of the invention of the present invention, as shown in Fig. 5 to Fig. 6 B, transmission mechanism is wire rope 6, and wire rope 6 is stretched on the first drive 5 and the second drive 7, and the second drive 7 and the second arm section 3 can be driven 1 to rotate in-180 ° ~ 180 angular ranges around the shaft.In order to realize rotating in above-mentioned-180 ° ~ 180 angular ranges, the first drive 5 and the second drive 7 are wound with twice wire rope.
Described wire rope 6 comprises the first wire rope 61 and the second wire rope 62 by described first drive 5 and described second drive 7 tensioning, and described first wire rope 61 is parallel with described second wire rope 62: described first wire rope 61 can drive described second drive 7 and described second arm section 3 to rotate within the scope of 0 ~-180 ° around described rotating shaft 1 by initial position; Described second wire rope 62 can drive described second drive 7 and described second arm section 3 to rotate within the scope of 0 ~ 180 ° around described rotating shaft 1 by initial position, and (definition initial position is zero degree, clockwise turn to negative angle, counterclockwise rotate to be positive-angle).
In an initial condition:
Described first wire rope 61 length be wound on described second drive 7 is not less than the half of described second drive 7 girth, and described first wire rope 61 length be wound on described first drive 5 is not less than the half of described second drive 7 girth;
Described second wire rope 62 length be wound on described second drive 7 is not less than the half of described second drive 7 girth, and described second wire rope 62 length be wound on described first drive 5 is not less than the half of described second drive 7 girth.
First introduce the situation that the first drive 5 is identical with the second drive 7 external diameter below:
As shown in Fig. 5 A, Fig. 5 B, Fig. 6 A, Fig. 6 B, the first drive 5 is identical with the external diameter of the second drive 7.
As shown in Fig. 5 A, Fig. 5 B, in an initial condition, the 3rd locked point C on the first drive 5 is fixed in one end of first wire rope 61, the half cycle of half cycle and the second drive 7 that the other end walks around the first drive 5 is respectively fixed on the 4th locked point D on the second drive 7, and the distance between the 3rd locked point C and the 4th locked point D is S
34=L;
The 5th locked point E on the first drive 5 is fixed in one end of second wire rope 62, the other end is fixed on the 6th locked point F on the second drive 7 respectively around the half cycle of the half cycle of the first drive 5 and the second drive 7, the distance S between the 5th locked point E and the 6th locked point F
56=L,
Wherein, 5th locked point E and the 3rd locked point C is arranged at the both sides of the first drive 5 and the second drive 7 central point line respectively, 6th locked point F and the 4th locked point D is arranged at the both sides of the first drive 5 and the second drive 7 central point line respectively, and L is the center to center distance of the first drive 5 and the second drive 7.
As shown in Fig. 6 A, Fig. 6 B, be that in Fig. 5, the second arm section is rotated counterclockwise the schematic diagram after 180 ° by original state.
As shown in Figure 6A, motor drives the first drive 5 to rotate counterclockwise 180 ° by initial position, and the first drive 5 drives the second drive 7 and the second arm section to be rotated counterclockwise 180 ° by the second wire rope 62.
After second drive 7 rotate in place, second wire rope 62 length walked around on the first drive 5 is the girth of the first drive 5, second wire rope 62 is only connected (certainly with the 6th locked point F on the second drive 7 simultaneously, second wire rope 62 can also have unnecessary length to be wound on the second drive 7, the use amount can saving wire rope is set herein), the second drive 7 no longer continues to rotate counterclockwise.In this course, second drive 7 has been rotated counterclockwise 180 ° relative to initial position, achieve the second drive 7 and the second arm section 3 around the shaft 1 in horizontal plane the rotation of 0 ~ 180 ° (definition initial position is zero degree, clockwise turn to negative angle, counterclockwise rotate to be positive-angle).
While the first drive 5 drives described second drive 7 to rotate counterclockwise by the second wire rope 62, described second drive 7 continues winding first wire rope 61, after the second drive 7 is rotated counterclockwise 180 °, the length that first wire rope 61 is wound in the second drive 7 is the girth of the second drive 7, first wire rope 61 is only connected (certainly with the C point on the first drive 5 simultaneously, first wire rope 61 can also have unnecessary length to be wound on the second drive 7, the use amount can saving wire rope is set herein), first drive 5 no longer continues to rotate counterclockwise.
This design of the first wire rope 61 and the second wire rope 62 is actually and complements one another, and when namely steel cable carries out active transmission, another steel cable carries out driven winding, for reset and opposite spin time prepare.
In like manner, structure shown in Fig. 5 A, Fig. 5 B also can by the first drive 5 drive the second drive 7 and the second arm section 3 in horizontal plane by initial position turn clockwise 180 ° and reset, realize 1 rotation (definition initial position is zero degree) in horizontal plane within the scope of-180 ° ~ 0 ° around the shaft of the second drive 7 and the second arm section 3, because the principle shown in its principle and Fig. 6 A, Fig. 6 B is suitable, do not repeat them here, those skilled in the art does not need to pay creative work and can realize.
Like this, when the first drive is identical with the external diameter of the second drive, the second arm section 3 can be met and 1 rotate in-180 ° ~ 180 ° angular ranges in horizontal plane around the shaft.
In the initial position of the present embodiment, first wirerope-winding first drive half cycle is also wound around the second drive half cycle, second wirerope-winding first drive half cycle to be wound around the second drive half cycle be a kind of most preferred mode, can save the length of wire rope to greatest extent.
In the initial position of i.e. the present embodiment, also comprise the situation that the first wire rope is wound around a circle or multi-turn on the first drive and the second drive, and the second wire rope is wound around one and encloses or the situation of multi-turn on the first drive and the second drive.
In this embodiment, the angular displacement that the angle that jib structure horizontally rotates can be rotated by motor is determined.
In the another kind of detailed description of the invention of this area, the first drive 5 is different from the external diameter of the second drive 7.As shown in Fig. 7 A, Fig. 7 B, Fig. 8 A, Fig. 8 B, the external diameter of the first drive 5 is less than the external diameter of the second drive 7:
In an initial condition:
Described first wire rope 61 length be wound on described second drive 7 is not less than the half of described second drive 7 girth, and described first wire rope 61 length be wound on described first drive 5 is not less than the half of described second drive 7 girth;
Described second wire rope 62 length be wound on described second drive 7 is not less than the half of described second drive 7 girth, and described second wire rope 62 length be wound on described first drive 5 is not less than the half of described second drive 7 girth.
As shown in Figure 7 A, 7 B, in an initial condition, the 7th locked point G on the second drive 7 is fixed in one end of first wire rope 61, the other end is wound in the first drive 5 after walking around the half cycle of the second drive 7 and is fixed on the 8th locked point H on the first drive 5, and the first wire rope 61 length be wound on the first drive 5 is the half of the second drive 7 girth;
The 9th locked point I on the second drive 7 is fixed in one end of second wire rope 62, the other end is wound in the first drive 5 after walking around the half cycle of the second drive 7 and is fixed on the tenth locked point J on the first drive 5, and the second wire rope 62 length be wound on the first drive 5 is the half of the second drive 7 girth;
Wherein, the 7th locked point G and the 9th locked point I lays respectively at the both sides of the first drive 5 and the second transmission 7 central point line.
As shown in Fig. 8 A, Fig. 8 B, be that the second arm section is turned clockwise by original state the structural representation of 180 °.
As shown in Figure 8 A, motor drives the first drive 5 to be turned clockwise by initial position, and the first drive 5 drives the second drive 7 to rotate 180 ° along pointer by the first wire rope 61.
After second drive 7 is rotated in place, first wire rope 61 walks around the girth of the length on the first drive 5 more than the first drive 5 (because of in the present embodiment, the external diameter of the first drive 5 is less than the external diameter of the second drive 7, so the first wire rope 61 walked around the first drive more than one week, the coiling length of the first wire rope 61 on the first drive is the girth of the second drive 7, can certainly be the girth that the first wire rope 61 length be wound on described first drive 5 is greater than the second drive 7), first wire rope 61 is only connected (certainly with the 7th locked point G on the second drive 7 simultaneously, first wire rope 61 can also have unnecessary length to be wound on the second drive 7, the use amount can saving wire rope is set herein), second drive 7 no longer continues to rotate clockwise.In this course, second drive 7 has turned clockwise 180 ° relative to initial position, achieve the second drive 7 and the second arm section 3 around the shaft 1 in horizontal plane the rotation of 0 ~-180 ° (definition initial position is zero degree, clockwise turn to negative angle, counterclockwise rotate to be positive-angle).
While the first drive 5 drives described second drive to rotate clockwise by the first wire rope 61, described second drive 7 continues winding second wire rope 62, when the second drive 7 turns clockwise after 180 °, second wire rope 62 length be wound on the second drive 7 is the girth of the second drive 7, second wire rope 62 is only connected (certainly with the tenth locked point J on the first drive 5 simultaneously, second wire rope 62 can also have unnecessary length to be wound on the first drive 5, the use amount can saving wire rope is set herein), first drive 5 no longer continues to rotate clockwise.
This design of the first wire rope 61 and the second wire rope 62 is actually and complements one another, and when namely steel cable carries out active transmission, another steel cable carries out driven winding, for reset and opposite spin time prepare.
In like manner, structure shown in Fig. 7 A, Fig. 7 B also can drive the second drive 7 and the second arm section 3 to be rotated counterclockwise 180 ° and reset by initial position in horizontal plane by the first drive 5, realize 1 rotation (definition initial position is zero degree) in horizontal plane within the scope of 0 ~ 180 ° around the shaft of the second drive 7 and the second arm section 3, because the principle shown in its principle and Fig. 8 A, Fig. 8 B is suitable, do not repeat them here, those skilled in the art does not need to pay creative work and can realize.
Those skilled in the art should also be understood that in the initial position of i.e. the present embodiment, and also comprise the situation that the first wire rope is wound around a circle or multi-turn on the second drive, the first wire rope is wound around the situation of a circle or multi-turn on the first drive simultaneously; And second wire rope on the second drive, be wound around circle or the situation of multi-turn, the second wire rope is wound around one and encloses or the situation of multi-turn on the first drive simultaneously.
In another kind of detailed description of the invention of the present invention, as shown in Figure 9, transmission mechanism is chain, and the first drive 5 and the second drive 7 are respectively the first sprocket wheel and the second sprocket wheel, and transmission mechanism is set in the first sprocket wheel and the second sprocket wheel.
Adopt the kind of drive of chain sprocket, the slippery conditions avoided in wire rope gearing occurs, and also just avoid the operation be fixed on by wire rope by locked point on drive, operation is more simple, ensures that the safety of producing is carried out smoothly simultaneously.In this set-up mode, control its rotational angle range by drive unit.
Present invention also offers a kind of concrete mixer (not shown), comprise the boom device in above-described embodiment.
By jib structure provided by the invention, boom device and concrete mixer, achieve the function that jib horizontally rotates easily, adopt rope to carry out transmission, drive unit and executing agency can be provided separately, and considerably increase the flexibility of jib general arrangement simultaneously; The realization of jib action does not need connecting rod, alleviates the load of drive unit; Do when horizontally rotating when not needing jib, rope mechanism can lock horizontally rotating of jib, and boom device provided by the invention can meet the functional requirement of existing jib completely; The present invention, when turntable does not rotate, achieves the horizontal rotation in surface of jib, adds the flexibility of cloth.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a jib structure, it is characterized in that, comprise the first arm section (2) and the second arm section (3) that are connected by rotating shaft (1), described rotating shaft (1) is vertical with the hinge axes of this jib structure end to be arranged, drive unit and the first drive (5) are installed on described first arm section (2), second drive (7) is rotatably installed on described rotating shaft (1), described second arm section (3) is fixedly connected with described second drive (7), described first drive (5) and described second drive (7) are provided with transmission mechanism, described drive unit drives the rotation of described first drive (5), described first drive (5) drives described second drive (7) and described second arm section (3) to rotate around described rotating shaft (1) by described transmission mechanism,
Described transmission mechanism is wire rope (6), described wire rope (6) is stretched in described first drive (5) with on described second drive (7), and described second drive (7) and described second arm section (3) can be driven to rotate in-180 ° ~ 180 ° angular ranges around described rotating shaft (1);
Described wire rope (6) comprises by first wire rope (61) of described first drive (5) and described second drive (7) tensioning and the second wire rope (62), and described first wire rope (61) can drive described second drive (7) and described second arm section (3) to rotate within the scope of 0 ~-180 ° around described rotating shaft (1) by initial position; Described second wire rope (62) can drive described second drive (7) and described second arm section (3) to rotate within the scope of 0 ~ 180 ° around described rotating shaft (1) by initial position.
2. jib structure according to claim 1, it is characterized in that, described transmission mechanism is wire rope (6), described wire rope (6) is stretched in described first drive (5) with on described second drive (7), and described second drive (7) and described second arm section (3) can be driven to rotate in-90 ° ~ 90 ° angular ranges around described rotating shaft (1).
3. jib structure according to claim 2, it is characterized in that, described wire rope (6) is fixed on described first drive (5) by the first locked point (A), is fixed on described second drive (7) by the second locked point (B).
4. jib structure according to claim 3, it is characterized in that, described first drive (5) is identical with the external diameter of described second drive (7), in an initial condition, distance between described first locked point (A) and described second locked point (B) is S=L+2R, wherein, L is the center to center distance between the first drive (5) and the second drive (7), and R is the radius of the first drive (5).
5. jib structure according to claim 1, is characterized in that,
Described first wire rope (61) is parallel with described second wire rope (62).
6. jib structure according to claim 5, is characterized in that, in an initial condition:
Described first wire rope (61) length be wound on described second drive (7) is not less than the half of described second drive (7) girth, and described first wire rope (61) length be wound on described first drive (5) is not less than the half of described second drive (7) girth;
Described second wire rope (62) length be wound on described second drive (7) is not less than the half of described second drive (7) girth, and described second wire rope (62) length be wound on described first drive (5) is not less than the half of described second drive (7) girth.
7. jib structure according to claim 1, it is characterized in that, described transmission mechanism is chain, described first drive (5) and described second drive (7) are respectively the first sprocket wheel and the second sprocket wheel, and described transmission mechanism is set in described first sprocket wheel and described second sprocket wheel.
8. a boom device, comprises the joint arm that more piece is hinged successively, it is characterized in that, the jib structure of at least one joint joint arm according to any one of claim 1 to 7.
9. a concrete mixer, is characterized in that, comprises the boom device described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210057507.1A CN102587667B (en) | 2012-03-06 | 2012-03-06 | Arm support structure, arm support device and concrete pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210057507.1A CN102587667B (en) | 2012-03-06 | 2012-03-06 | Arm support structure, arm support device and concrete pump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102587667A CN102587667A (en) | 2012-07-18 |
| CN102587667B true CN102587667B (en) | 2015-02-18 |
Family
ID=46476851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210057507.1A Active CN102587667B (en) | 2012-03-06 | 2012-03-06 | Arm support structure, arm support device and concrete pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102587667B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969666A (en) * | 2021-09-09 | 2022-01-25 | 昆山世越建材设备有限公司 | Concrete pump truck |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214663A (en) * | 2008-01-10 | 2008-07-09 | 上海交通大学 | Flexible controllable mechanism for mechanical arm |
| CN100443770C (en) * | 2006-12-14 | 2008-12-17 | 上海交通大学 | Wire cable transmission mechanism for use in mechanical arm |
| CN101446134A (en) * | 2008-11-21 | 2009-06-03 | 北京建研机械科技有限公司 | Concrete distributor with arm support capable of both horizontal rotation and pitching movement |
| CN101549497A (en) * | 2009-05-14 | 2009-10-07 | 上海交通大学 | Light-duty mechanical arm |
| CN201326278Y (en) * | 2008-11-21 | 2009-10-14 | 北京建研机械科技有限公司 | Material spreading machine with relative movement of three-arm combination |
| CN201730339U (en) * | 2010-08-19 | 2011-02-02 | 三一重工股份有限公司 | Concrete pumping equipment and cantilever device thereof |
| CN202441066U (en) * | 2012-03-06 | 2012-09-19 | 三一重工股份有限公司 | Cantilever crane structure, cantilever crane device and concrete pump truck |
-
2012
- 2012-03-06 CN CN201210057507.1A patent/CN102587667B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443770C (en) * | 2006-12-14 | 2008-12-17 | 上海交通大学 | Wire cable transmission mechanism for use in mechanical arm |
| CN101214663A (en) * | 2008-01-10 | 2008-07-09 | 上海交通大学 | Flexible controllable mechanism for mechanical arm |
| CN101446134A (en) * | 2008-11-21 | 2009-06-03 | 北京建研机械科技有限公司 | Concrete distributor with arm support capable of both horizontal rotation and pitching movement |
| CN201326278Y (en) * | 2008-11-21 | 2009-10-14 | 北京建研机械科技有限公司 | Material spreading machine with relative movement of three-arm combination |
| CN101549497A (en) * | 2009-05-14 | 2009-10-07 | 上海交通大学 | Light-duty mechanical arm |
| CN201730339U (en) * | 2010-08-19 | 2011-02-02 | 三一重工股份有限公司 | Concrete pumping equipment and cantilever device thereof |
| CN202441066U (en) * | 2012-03-06 | 2012-09-19 | 三一重工股份有限公司 | Cantilever crane structure, cantilever crane device and concrete pump truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102587667A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202575767U (en) | Minitype spider-type hoisting machine | |
| CN202808094U (en) | Mining cable reel | |
| CN104925673B (en) | A kind of many cranes integration of operation auxiliary hoisting device and method | |
| CN106395666A (en) | Test system of maritime replenishing device | |
| CN104440904A (en) | Steel wire rope transmission mechanical hand | |
| CN210210398U (en) | Swing arm mechanism with tail end kept horizontal passively | |
| CN103240737B (en) | Three-degree-of-freedom hybrid drive winding type flexible cable parallel mechanism | |
| CN114393572B (en) | Rope-driven mechanical arm crossing joints | |
| CN102587667B (en) | Arm support structure, arm support device and concrete pump truck | |
| CN203296419U (en) | Car carrying plate lifting device used for two-storey garage | |
| CN202441066U (en) | Cantilever crane structure, cantilever crane device and concrete pump truck | |
| CN108868601A (en) | A kind of rotary drilling rig that elevator auxiliary mast folds back | |
| CN205591628U (en) | A iron tower for high tension transmission line | |
| CN217808437U (en) | Mast crane with movable double arms | |
| CN202706569U (en) | Pull rope driven cantilever system and concrete pump truck | |
| CN102605958A (en) | Cantilever crane device and engineering machinery | |
| CN207209822U (en) | A kind of Portable crane | |
| CN110371260A (en) | The lifting device and its control method of seawater column | |
| CN102303824B (en) | Rope blocking device and engineering machinery with same | |
| CN101704475B (en) | Novel crane | |
| CN214031595U (en) | Marine speed-multiplying lifting mechanism | |
| CN102720363B (en) | Arm support device and concrete pump truck | |
| CN210286576U (en) | Lifting system and large mining excavator | |
| CN209383294U (en) | A kind of derrick crane adjusting height with rock-steady structure | |
| CN202279551U (en) | Pipe reeling device and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |