CN201056850Y - Concrete pump vehicle with hydraulic pressure driving hinge between jibs - Google Patents
Concrete pump vehicle with hydraulic pressure driving hinge between jibs Download PDFInfo
- Publication number
- CN201056850Y CN201056850Y CNU2007200637833U CN200720063783U CN201056850Y CN 201056850 Y CN201056850 Y CN 201056850Y CN U2007200637833 U CNU2007200637833 U CN U2007200637833U CN 200720063783 U CN200720063783 U CN 200720063783U CN 201056850 Y CN201056850 Y CN 201056850Y
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- CN
- China
- Prior art keywords
- circular shaft
- jib
- casing
- piston
- driving hinge
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Abstract
A concrete pump truck having hydraulic drive hinge between booms comprises chassis, a rotating mechanism, a boom system, a pump feeding mechanism, and a support mechanism, wherein a hydraulic drive hinge is arranged between at least a group of adjacent booms in the boom system for driving the booms to rotate relatively. The hydraulic drive hinge comprises a case body, a circular shaft, a piston and two end caps, wherein the case body is a columnar hollow cavity; the piston is sheathed on a columnar sleeve in the case body; the circular shaft is sheathed in the piston; the piston is connected with the case body and the circular shaft through reverse screw threads, and the lead angles of the screw threads are larger than the self-locking angle; the piston divides the internal portion of the case body into two cavities, both of which have an oil port communicated with a hydraulic pipeline; the two end caps are respectively positioned at both ends of the case body; a sealing device is arranged at the joint between the case body and the circular shaft; the circular shaft is coaxially positioned with the case body through the end caps and protrudes out of the end caps at both ends; and the case body and the circular shaft are respectively connected with one of two adjacent booms. The concrete pump truck has delicate and simple structure, and can easily achieve large rotation angle between booms.
Description
Technical field
The utility model relates to concrete mixer, relates in particular to the concrete mixer by the Driven by Hydraulic Cylinder jib.
Background technology
The concrete pump chassis is provided with panoramic table, hinged first segment jib on the panoramic table, and the hinged second joint jib in first segment jib termination, and the like.Arrange conveying pipeline on the jib, save respectively during vehicle ' that jib is all folding to be regained on the pump truck chassis, respectively save jib when carrying out pumpdown and all launch.Concrete mixer drives the expansion and the withdrawal of jib by the jib drive device.In the prior art, the general design of concrete pump truck arm drive unit is: (or between jib panoramic table and first segment jib) adopts the beidirectional hydraulic cylinder between concrete mixer two joint jibs, the end that the hydraulic cylinder circular shaft stretches out in termination and the cylinder body termination is hinged on the joint jib (or panoramic table), the other end is hinged on another joint jib, by the relative motion between hydraulic cylinder extension and contraction control jib, promptly launch and regain.Obtain relative angle rotatable bigger between jib as need, also must additional linkage, the hydraulic cylinder circular shaft stretches out a end in termination and the cylinder body termination and is hinged on wherein on the joint jib, and the other end is hinged with two and overlaps connecting rods.The other end of this two covers connecting rod is hinged with two joint jibs respectively, drives two joint jibs by linkage when hydraulic cylinder is flexible and relatively rotates, and realizes the action that launches and regain.Because the design limitations of linkage, jib drive of the prior art mechanism can't realize the jib large-angle slewing.Under the technical condition, realize that 270 angles of revolution of spending are relatively more painstaking at present, and essential design and the additional linkage of manufacturing, mechanism is easy inadequately, requires also very high to connecting rod strength.In order to increase the angle of revolution, the jib drive device with the turbine and worm transmission has appearred at present, can realize jib 360 degree revolutions in theory.But the huge heaviness of mechanism, the processing cost height has also brought new carrying burden to jib.
The utility model content
The technical problems to be solved in the utility model is: at the technical problem that prior art exists, provide the concrete mixer that a kind of boom jib angle of revolution is big, structure is lightly easy, supporting capacity strong, simple installation has hydraulic driving hinge efficiently between jib.
The utility model provides the concrete mixer that has hydraulic driving hinge between a kind of jib, comprise the chassis and be installed in slew gear on the chassis, boom system, pumping mechanism and supporting device, it is characterized in that: be equiped with driving jib hydraulic driving hinge in relative rotation between at least one group of adjacent jib in the described boom system, described hydraulic driving hinge comprises casing, circular shaft and piston, described box house is a cylindrical cavity, described piston is the cylindrical sleeves that is socketed in the described casing, described round sleeve is connected in the described piston, be between described piston and the described casing and between described piston and the described circular shaft and be threaded, the rotation direction that two places are threaded is opposite, and lead angle is all greater than screw thread self-locking critical angle, described circular shaft two ends stretch out beyond the described casing and and described casing between be provided with sealing device, one end of described piston is established sealing device respectively and between described circular shaft and the described casing, described box house is divided into two seal chambers, described two seal chambers all have the hydraulic fluid port that is communicated with fluid pressure line, can be under action of hydraulic force described in relative rotation casing and described circular shaft axial location, and fixedly connected with the adjacent jib of described two joints respectively.
The external screw thread of described piston and internal thread are the high strength multiple thread.
Described hydraulic driving hinge has two end caps, described two end caps lay respectively at described tank ends and cooperate with described casing and described circular shaft, be equipped with sealing device in the cooperation place, described casing and described circular shaft are by described end cap axial location, and stretch out respectively beyond described two end caps at described circular shaft two ends.
Described two end caps be threaded with described circular shaft and by alignment pin or locator card annulate shaft to the location; Be provided with the ladder location structure between described two end caps and the described casing and be provided with sliding bearing or rolling bearing or lay the ball grooves of ball in it.
Jib one welding or bolt in described casing and the described two adjacent jibs are connected and fixed, and described circular shaft external part is connected by spline or multikey connection or bolt connection with jib two in the described two adjacent jibs.
Described circular shaft external part is connected with a pair of clamping plate by spline or multikey respectively, and described clamping plate are connected with described adjacent jib bolt.
Described hydraulic fluid port is located on described casing or the described circular shaft.
Also be provided with the voltage-limiting protection hydraulic fluid port on described casing or the described circular shaft, voltage-limiting protection hydraulic fluid port one end links to each other with seal chamber, and the other end links to each other with the voltage-limiting protection oil circuit.
One of them lead angle of the external screw thread of described piston and internal thread equals 90 degree, and another is less than 90 degree.
Described circular shaft manufactures the hollow shaft of band concrete conveying pipeline passage.
Compared with prior art, advantage of the present utility model just is: this device only by a special hydraulic driving hinge is installed, need not the realization jib large-angle slewing that additional linkage just can be easily easy between two jibs of boom system.Be with hydraulically powered special hinge mechanism directly two jibs to be linked to each other in this device, and drive it and relatively rotate, need not other mechanisms such as additional linkage, light and handy succinct, be easy to manufacture and design, cost is lower.Especially, when being used for the connection between the last two joint jibs, can improve the steering flexibility of boom end hose greatly.The piston internal and external threads can adopt special coarse thread high strength multiple thread in this device, and its load property class is similar to spline and connects, the intensity height, and stressing conditions is good, and supporting capacity is strong, is highly suitable for the driving of concrete pump truck arm.Hydraulic driving hinge is that spline is connected or multikey connects or bolt connects with the connected mode of jib, and is solid and reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structure for amplifying schematic diagram after two adjacent jibs of application hydraulic driving hinge launch;
Fig. 3 is the cutaway view Amplified image of hydraulic driving hinge.
Each label is represented among the figure:
1, chassis 2, slew gear
3, boom system 4, pumping mechanism
5, supporting device 6, hydraulic driving hinge
7, clamping plate 8, jib one
9, jib 2 61, casing
62, circular shaft 63, piston
64, end cap 65, hydraulic fluid port
66, supporting plate 67, alignment pin
68, sliding bearing 69, voltage-limiting protection hydraulic fluid port
610, seal chamber
The specific embodiment
As depicted in figs. 1 and 2, the concrete mixer that has hydraulic driving hinge between jib of the present utility model, comprise chassis 1 and be installed in The One On The Chassis slew gear 2, boom system 3, pumping mechanism 4 and supporting device 5, boom system 3 is made of the end to end jib of some joints, first segment jib and slew gear 2 are hinged, link to each other by hydraulic driving hinge 6 between the jib 1 of last two joints of boom system 3 and jib 29.
As shown in Figure 3, hydraulic driving hinge 6 comprises casing 61, circular shaft 62, piston 63 and two end caps 64, casing 61 inside are cylindrical cavity, piston 63 is for being socketed on the cylindrical sleeves in the casing 61, circular shaft 62 is socketed in the piston 63, be between piston 63 and the casing 61 and between piston 63 and the circular shaft 62 and be threaded, two place's screw threads are special coarse thread high strength multiple thread, two place's screw threads are special coarse thread high strength multiple thread, and rotation direction is opposite, and lead angle is all greater than screw thread self-locking critical angle.One end of piston 63 has sealing device, casing 61 inside is divided into 610, two cavitys 610 of two cavitys all has the hydraulic fluid port 65 that is communicated with fluid pressure line, and hydraulic fluid port 65 is located on the casing 61 or is located on the circular shaft 62, is located in this example on the casing 61.Two end caps 64 lay respectively at casing 61 two ends and are connected and fixed by screw thread and circular shaft 62, and on end cap 64, be provided with sealing device with casing 61 and circular shaft 62 cooperation places, be provided with sliding bearing 68 or rolling bearing between end cap 64 and the described casing 61 or lay the ball grooves of ball in it, adopt sliding bearing 68 in this example.Circular shaft 62 be threaded with end cap 64 and by alignment pin 67 or locator card annulate shaft to the location, adopt alignment pin 67 axial location in this example, circular shaft 62 is by hierarchic structure and casing 61 axial location on the end cap 64, and stretch out beyond the end cap 64 at two ends.
Two cavitys 610 are oil-filled during hydraulic driving hinge 6 action, promote piston 63 and move, and piston 63 is spinned along casing 61 inner threads and moved, simultaneously, circular shaft 62 under the drive of piston 63 internal threads with piston 63 equidirectional rotations.Just relatively rotate between casing 61 and the circular shaft 62 like this.
This hydraulic driving hinge 6 can be easily easy realization jib 1 and jib 29 between large-angle slewing, need not other mechanisms such as additional linkage, light and handy succinct, be easy to manufacture and design, cost is lower.Because jib 9 is the final section jib, its end is connected with defeated material flexible pipe in the present embodiment, and application of the present utility model has improved the steering flexibility of terminal defeated material flexible pipe greatly.
In order to improve the supporting capacity of mechanism, piston 63 internal and external threads in the present embodiment all are designed to multiple thread, and its load property class is similar to spline and connects, the intensity height, stressing conditions is good, and supporting capacity is strong, the novel driving that is highly suitable for concrete pump truck arm of this use.
In the present embodiment, circular shaft 61 is made hollow shaft, as the passage of concrete conveying pipeline.All have voltage-limiting protection hydraulic fluid port 69 in hydraulicefficiency hinge two cavitys 610, open on circular shaft 61 and connect the voltage-limiting protection loop, when oil pressure is too high, play the effect of unloading pressure protection.
Claims (10)
1. the concrete mixer that has hydraulic driving hinge between a jib, comprise chassis (1) and be installed in slew gear (2) on the chassis (1), boom system (3), pumping mechanism (4) and supporting device (5), it is characterized in that: be equiped with driving jib hydraulic driving hinge (6) in relative rotation between at least one group of adjacent jib in the described boom system (3), described hydraulic driving hinge (6) comprises casing (61), circular shaft (62) and piston (63), described casing (61) inside is cylindrical cavity, described piston (63) is for being socketed on the cylindrical sleeves in the described casing (61), described circular shaft (62) is socketed in the described piston (63), be between described piston (63) and the described casing (61) and between described piston (63) and the described circular shaft (62) and be threaded, the rotation direction that two places are threaded is opposite, and lead angle is all greater than screw thread self-locking critical angle, described circular shaft (62) two ends stretch out described casing (61) in addition and and described casing (61) between be provided with sealing device, one end of described piston (63) is established sealing device respectively and between described circular shaft (62) and the described casing (61), described casing (61) inside is divided into two seal chambers (610), described two seal chambers (610) all have the hydraulic fluid port (65) that is communicated with fluid pressure line, can be under action of hydraulic force described in relative rotation casing (61) and described circular shaft (62) axial location, and fixedly connected with the adjacent jib of described two joints respectively.
2. according to the concrete mixer that has hydraulic driving hinge between the described jib of claim 1, it is characterized in that the external screw thread and the internal thread of described piston (63) are the high strength multiple thread.
3. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that, described hydraulic driving hinge (6) has two end caps (64), described two end caps (64) lay respectively at described casing (61) two ends and cooperate with described casing (61) and described circular shaft (62), be equipped with sealing device in the cooperation place, described casing (61) and described circular shaft (62) are by described end cap (64) axial location, and described circular shaft (62) two ends are stretched out described two end caps (64) respectively in addition.
4. according to the concrete mixer that has hydraulic driving hinge between the described jib of claim 3, it is characterized in that: described two end caps (64) be threaded with described circular shaft (62) and by alignment pin (67) or locator card annulate shaft to the location; Be provided with the ladder location structure between described two end caps (64) and the described casing (61) and be provided with sliding bearing (68) or rolling bearing or lay the ball grooves of ball in it.
5. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that, jib two (9) welding or bolt in described casing (61) and the described two adjacent jibs are connected and fixed, and described circular shaft (62) external part is connected by spline or multikey connection or bolt connection with jib one (8) in the described two adjacent jibs.
6. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that, described circular shaft (62) external part is connected with a pair of clamping plate (7) by spline or multikey respectively, and described clamping plate (7) are connected with described adjacent jib bolt.
7. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that described hydraulic fluid port (65) is located on described casing (61) or the described circular shaft (62).
8. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs; it is characterized in that; also be provided with voltage-limiting protection hydraulic fluid port (69) on described casing (61) or the described circular shaft (62); voltage-limiting protection hydraulic fluid port (69) one ends link to each other with seal chamber (610), and the other end links to each other with the voltage-limiting protection oil circuit.
9. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that one of them lead angle of the external screw thread of described piston (63) and internal thread equals 90 degree, another is less than 90 degree.
10. according to the concrete mixer that has hydraulic driving hinge between claim 1 or 2 described jibs, it is characterized in that described circular shaft (62) manufactures the hollow shaft of band concrete conveying pipeline passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200637833U CN201056850Y (en) | 2007-07-10 | 2007-07-10 | Concrete pump vehicle with hydraulic pressure driving hinge between jibs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200637833U CN201056850Y (en) | 2007-07-10 | 2007-07-10 | Concrete pump vehicle with hydraulic pressure driving hinge between jibs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201056850Y true CN201056850Y (en) | 2008-05-07 |
Family
ID=39425691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200637833U Expired - Lifetime CN201056850Y (en) | 2007-07-10 | 2007-07-10 | Concrete pump vehicle with hydraulic pressure driving hinge between jibs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201056850Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012022187A1 (en) * | 2010-08-19 | 2012-02-23 | 湖南三一智能控制设备有限公司 | Apparatus for pumping concrete and boom device thereof |
| EP2776360B1 (en) | 2011-11-10 | 2016-02-03 | Schwing GmbH | Boom construction, in particular for a truck-mounted concrete pump, and truck-mounted concrete pump |
| DE102017128175A1 (en) * | 2017-11-28 | 2019-05-29 | Schwing Gmbh | Splined shaft connection to pole segment |
-
2007
- 2007-07-10 CN CNU2007200637833U patent/CN201056850Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012022187A1 (en) * | 2010-08-19 | 2012-02-23 | 湖南三一智能控制设备有限公司 | Apparatus for pumping concrete and boom device thereof |
| EP2776360B1 (en) | 2011-11-10 | 2016-02-03 | Schwing GmbH | Boom construction, in particular for a truck-mounted concrete pump, and truck-mounted concrete pump |
| DE102017128175A1 (en) * | 2017-11-28 | 2019-05-29 | Schwing Gmbh | Splined shaft connection to pole segment |
| WO2019105982A1 (en) * | 2017-11-28 | 2019-06-06 | Schwing Gmbh | Splined shaft connection on a mast segment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |