CN101121399B - Telescopic component and support for engineering machinery and concrete pump vehicle with the support - Google Patents
Telescopic component and support for engineering machinery and concrete pump vehicle with the support Download PDFInfo
- Publication number
- CN101121399B CN101121399B CN200710035675A CN200710035675A CN101121399B CN 101121399 B CN101121399 B CN 101121399B CN 200710035675 A CN200710035675 A CN 200710035675A CN 200710035675 A CN200710035675 A CN 200710035675A CN 101121399 B CN101121399 B CN 101121399B
- Authority
- CN
- China
- Prior art keywords
- hollow axle
- sleeve pipe
- circular shaft
- assembly
- support
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
An extension component for the engineering plant, an extension landing leg formed by the component and a concrete-pump car are provided. The extension component includes a telescopic bushing component on which a helix mechanism and an arresting device are arranged. The helix mechanism contains a prime mover, a circular shaft and a hollow barrel. The circular shaft is connected with the hollow barrel via a thread or a middle hollow shaft group is arranged between the circular shaft and the hollow barrel, the middle hollow shaft group comprising a middle hollow shaft which has an internal thread and an outside thread. The both sides of the middle hollow shaft group are connected respectively with the circular shaft and the hollow barrel via the thread and the prime mover is connected with the end of the circular shaft or the hollow barrel, the prime mover fixed on one end of the bushing component and the other end of the bushing component fixed and connected with the end of no prime mover in the helix mechanism. The extension part of the extension landing leg comprises the extension component and one end of the extension landing leg is provided with a supporting component while the other end is connected with a bracket on an underpan of the engineering plant. A supporting part of the concrete-pump car is provided with the extension landing leg. The invention has the advantages of simple structure, convenient manufacture and low cost.
Description
Technical field
The present invention relates to engineering machinery field, relate in particular to the telescopic component that drives by screw mechanism that is used for construction machinery and equipment, the telescopic leg that constitutes by this assembly and concrete pump truck with this telescopic leg.
Background technology
Support when many construction machinery and equipments need adopt bracing or strutting arrangement to realize operation its objective is that to avoid working load excessive and cause and topple.Existing bracing or strutting arrangement mostly is before side and the supporting leg of rear flank expansion, and each supporting leg all has packs up and launch two states.When this project machinery needs to pack up supporting leg and be convenient to move when mobile, this state supporting leg is called and is in the stowed position.When this mobile engineering machinery is in the construction state, then launch supporting leg and support, this state supporting leg is called and is in the Support Position.Two kinds of mode of operations of above-mentioned supporting leg make the existence of supporting leg can not have influence on moving and using of this project machinery.With the concrete pump truck is example, present widely used leg structure form is telescopic, oscillating type, supporting leg is the swing of the vertical axis on the chassis overhang or flexible relatively, and all connect the support foot part that vertically moves or stretch at the supporting leg protrude end and be used for supporting, make mobile engineering machinery can when operation, obtain stable mode of operation.
Multi-stage expansion supporting leg of the prior art generally adopts telescopic oil cylinder to drive multistage supporting leg to stretch out and shrink.Adopt a beidirectional Driven by Hydraulic Cylinder for the two-stage telescopic outrigger; Adopt the multi-stage expansion hydraulic oil cylinder driving for the telescopic outrigger more than the two-stage; Also can adopt steel rope rope drawing machine structure to drive.The defective that exists in the prior art is: multi-stage expansion cylinder structure complexity, and processing difficulties, cost is higher, the layout of oil cylinder transport pipe is also comparatively difficult, drives as adopting steel rope rope drawing machine structure, then need connect up in supporting leg inner many places punching, complex structure, processing and layout are all cumbersome.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, be convenient to make, with low cost, the telescopic component that adopts primary mover to drive multiple coil mechanism to drive, the telescopic leg that constitutes by this assembly and concrete pump truck with this telescopic leg.
For solving the problems of the technologies described above, the present invention by the following technical solutions.
A kind of telescopic component that is used for construction machinery and equipment by the screw mechanism driving, comprise the telescope assembly, but be equiped with the flexible screw mechanism of drive sleeve assembly on the described thimble assembly and to the flexible spacing stop motion mechanism of thimble assembly, described screw mechanism comprises primary mover, have externally threaded circular shaft and the hollow cylinder that has negative thread, described circular shaft is threaded with hollow cylinder, or between circular shaft and hollow cylinder, be provided with intermediate hollow axle group, described intermediate hollow axle group has negative thread by a joint and externally threaded intermediate hollow axle constitutes, or have negative thread and externally threaded intermediate hollow axle by two joints or more than two joints and be threaded from beginning to end and form, the two ends of intermediate hollow axle group are threaded with circular shaft and hollow cylinder respectively, primary mover is located in the thimble assembly, the output shaft of primary mover is connected with the end of circular shaft or hollow cylinder, the support of primary mover is fixed in an end of thimble assembly, and the end that primary mover is not installed in the other end of thimble assembly and the screw mechanism is affixed.
Further, the invention provides a kind of telescopic leg that constitutes by above-mentioned telescopic component, comprise the telescope assembly, described thimble assembly one end is provided with the support foot assembly that can vertically stretch, the other end is connected with support on the engineering machinery chassis, but be equiped with the flexible screw mechanism of drive sleeve assembly on the described thimble assembly and to the flexible spacing stop motion mechanism of thimble assembly, described screw mechanism comprises primary mover, have externally threaded circular shaft and the hollow cylinder that has negative thread, described circular shaft is threaded with hollow cylinder, primary mover is located in the thimble assembly, the output shaft of primary mover is connected with the end of circular shaft or hollow cylinder, the support of primary mover is fixed in an end of thimble assembly, and the end that primary mover is not installed in the other end of thimble assembly and the screw mechanism is affixed.
Preferably, be provided with intermediate hollow axle group between described circular shaft and the hollow cylinder, described intermediate hollow axle group has negative thread by a joint and externally threaded intermediate hollow axle constitutes, or have negative thread and externally threaded intermediate hollow axle by two joints or more than two joints and be threaded from beginning to end and form, the two ends of intermediate hollow axle group are threaded with circular shaft and hollow cylinder respectively.
Preferably, described thimble assembly comprises the top sleeve pipe that is connected with support on the engineering machinery chassis, the terminal sleeve pipe affixed with the support foot assembly, be socketed on joint of one between top sleeve pipe and the terminal sleeve pipe or the above intermediate casing of a joint, when being provided with intermediate hollow axle group between circular shaft and the hollow cylinder, described intermediate hollow axle equates with the quantity of intermediate casing, each intermediate hollow axle is corresponding with an intermediate casing respectively, each intermediate casing is installed with bearing seat away from an end of top sleeve pipe, the intermediate hollow axle by bearings on bearing seat.
Preferably, described thimble assembly comprises the top sleeve pipe that is connected with support on the engineering machinery chassis, the terminal sleeve pipe affixed with the support foot assembly, be socketed on joint of one between top sleeve pipe and the terminal sleeve pipe or the above intermediate casing of a joint, when being provided with intermediate hollow axle group between circular shaft and the hollow cylinder, described hollow cylinder, the negative thread of intermediate hollow axle is respectively and is fixed on hollow cylinder, the negative thread of the nut of intermediate hollow axle inwall, one end of intermediate hollow axle group is threaded with circular shaft by nut, nut thread in the other end and the hollow cylinder is connected, and the end that circular shaft and each intermediate hollow axle cooperate with each nut is provided with the stop pin that prevents the screw mechanism disconnection.
Preferably, the stop motion mechanism on the described thimble assembly comprises the lip that prevents the thimble assembly disconnection and limit its maximum retraction degree, and lip is provided with master cock from signal to prime mover control device that can send.
Preferably, the moving sets cooperation place between described adjacent casing is provided with isolated degree of freedom's roller.
Preferably, described support foot assembly has the overhanging cylinder of a hydraulic pressure, and described overhanging cylinder is communicated with oil sources by a flexible pipe that can be wound up on the hose reel.
The present invention further provides a kind of concrete pump truck with above-mentioned telescopic leg, comprise the chassis and be installed in pumping mechanism on the chassis, boom system and supporting device, described supporting device comprises that four or four are with upper supporting leg be installed in support on the chassis, each supporting leg one end is provided with the support foot assembly that can vertically stretch, the other end is connected with support, described four or four is telescopic leg to have in the upper supporting leg more than one or one, described telescopic leg comprises the telescope assembly, but be equiped with the flexible screw mechanism of drive sleeve assembly on the described thimble assembly and to the flexible spacing stop motion mechanism of thimble assembly, described screw mechanism comprises primary mover, have externally threaded circular shaft and the hollow cylinder that has negative thread, described circular shaft is threaded with hollow cylinder, primary mover is located in the thimble assembly, the output shaft of primary mover is connected with the end of circular shaft or hollow cylinder, the support of primary mover is fixed in an end of thimble assembly, and the end that primary mover is not installed in the other end of thimble assembly and the screw mechanism is affixed.
Preferably, be provided with intermediate hollow axle group between described circular shaft and the hollow cylinder, described intermediate hollow axle group has negative thread by a joint and externally threaded intermediate hollow axle constitutes, or have negative thread and externally threaded intermediate hollow axle by two joints or more than two joints and be threaded from beginning to end and form, the two ends of intermediate hollow axle group are threaded with circular shaft and hollow cylinder respectively.
Preferably, described thimble assembly comprises the top sleeve pipe that is connected with support on the engineering machinery chassis, the terminal sleeve pipe affixed with the support foot assembly, be socketed on joint of one between top sleeve pipe and the terminal sleeve pipe or the above intermediate casing of a joint, when being provided with intermediate hollow axle group between circular shaft and the hollow cylinder, the quantity of described intermediate hollow axle equates with the quantity of intermediate casing and is corresponding one by one, each intermediate casing is installed with bearing seat away from an end of top sleeve pipe, the intermediate hollow axle by bearings on bearing seat.
Preferably, described thimble assembly comprises the top sleeve pipe that is connected with support on the engineering machinery chassis, the terminal sleeve pipe affixed with the support foot assembly, be socketed on joint of one between top sleeve pipe and the terminal sleeve pipe or the above intermediate casing of a joint, when being provided with intermediate hollow axle group between circular shaft and the hollow cylinder, the negative thread of described intermediate hollow axle is the negative thread that is fixed on the nut of intermediate hollow axle inwall, the negative thread of described hollow cylinder is the negative thread that is fixed on the nut of hollow cylinder inwall, one end of intermediate hollow axle group is threaded with circular shaft by nut, nut thread in the other end and the hollow cylinder is connected, and the end that circular shaft and each intermediate hollow axle cooperate with each nut is provided with the stop pin that prevents the screw mechanism disconnection.
Compared with prior art, advantage of the present invention just is:
1, the present invention simple in structure by the telescopic component that screw mechanism drives, be easy to processing and layout, with low cost, applied widely, can be widely used in the stretching structure spares such as telescopic outrigger, telescopic boom in the construction machinery and equipment.
2, the present invention is used for the telescopic leg employing primary mover drive screw mechanism driving of construction machinery and equipment, and the simple light screw thread type of drive of application structure can realize the expanding-contracting action of multistage supporting leg, is convenient to processing and manufacturing, has saved manpower and productive costs.Rotating by the control primary mover can realize the supporting leg fore and aft motion, controls simple and convenient.Be equiped with the primary mover master cock on thimble assembly, when supporting legs at different levels stretched out fully or withdraw, primary mover can SELF CL, had realized that control is intelligent.
3, the present invention can adopt the mode of screw mechanism and thimble assembly synchronization telescope, this mode realizes by bearing seat is set at intermediate casing, bearing seat plays a supportive role, make screw mechanism pulsation-free operation more, also play effect simultaneously with intermediate hollow axle and intermediate casing axial location, guarantee that intermediate casing and intermediate hollow axle are synchronized with the movement, make the also stop in time when intermediate casing is met stop motion mechanism stop of intermediate hollow axle, avoided the screw mechanism disconnection.
4, the present invention can also set firmly nut in each hollow shaft, can in each hollow shaft, open negative thread like this, simplified manufacturing procedure, reduced cost, in this scheme bearing seat can be set, can directly establish stop pin and avoid screw mechanism to disconnect in the end that the intermediate hollow axle cooperates with nut; And do not limit intermediate casing and intermediate hollow axle one and be decided to be axially and be synchronized with the movement, do not limit the two number yet and equate that necessarily form is more free.
5, the present invention adopted the concrete pump truck of above-mentioned telescopic leg have compact conformation, supporting leg telescopic process steadily, control advantages such as easy, the operating efficiency of concrete pump truck of the present invention is improved, can satisfy the demand of various operating modes, comformability is stronger.
Description of drawings
Fig. 1 is the structural representation of telescopic component of the present invention;
Fig. 2 is the structural representation of telescopic leg embodiment 1 of the present invention;
Fig. 3 is the structural representation of telescopic leg embodiment 2 of the present invention;
Fig. 4 is the partial enlarged drawing at I place among Fig. 3;
Fig. 5 is the structural representation of telescopic leg embodiment 3 of the present invention;
Fig. 6 is the structural representation of concrete pump truck of the present invention;
Fig. 7 is the plan structure scheme drawing after concrete pump truck of the present invention stretches out supporting leg.
Each label is represented among the figure:
1, thimble assembly 2, support foot assembly
3, screw mechanism 4, stop motion mechanism
11, top sleeve pipe 12, terminal sleeve pipe
13, intermediate casing 14, isolated degree of freedom's roller
21, boom system 22, supporting device
23, supporting leg 24, chassis
25, rotating shaft 26, pumping mechanism
31, primary mover 32, circular shaft
33, hollow cylinder 34, intermediate hollow axle group
41, lip 42, master cock
131, bearing seat 311, support
341, intermediate hollow axle 342, nut
343, stop pin
The specific embodiment
As shown in Figure 1, a kind of telescopic component that is used for construction machinery and equipment of the present invention by the screw mechanism driving, comprise telescope assembly 1, but be equiped with the flexible screw mechanism 3 of drive sleeve assembly 1 on the thimble assembly 1 and to thimble assembly 1 flexible spacing stop motion mechanism 4, screw mechanism 3 comprises primary mover 31, have externally threaded circular shaft 32 and the hollow cylinder 33 that has negative thread, between circular shaft 32 and hollow cylinder 33, be provided with intermediate hollow axle group 34, intermediate hollow axle group 34 has negative thread by a joint and externally threaded intermediate hollow axle 341 constitutes, the two ends of intermediate hollow axle 341 are threaded with circular shaft 32 and hollow cylinder 33 respectively, the output shaft of primary mover 31 is connected with the end of circular shaft 32 or hollow cylinder 33, the support 311 of primary mover 31 is fixed in an end of thimble assembly 1, and the end that primary mover 31 is not installed in the other end of thimble assembly 1 and the screw mechanism 3 is affixed.
In the telescopic component of the present invention by the screw mechanism driving, circular shaft 32 can directly be threaded with hollow cylinder 33, or connects by the intermediate hollow axle group 34 that is made of two joints or the above intermediate hollow axle 341 of two joints.This telescopic component can be widely used in the stretching structure spares such as the telescopic outrigger, telescopic boom in all kinds of engineering goods, and it is simple in structure, be easy to processing and layout, with low cost, applied widely.
The version of telescopic leg of the present invention is varied, below in conjunction with the drawings and specific embodiments telescopic leg of the present invention is described in further detail.
Embodiment 1: as Fig. 2, Fig. 6 and shown in Figure 7, a kind of telescopic leg that is used for construction machinery and equipment of the present invention, comprise telescopic sleeve pipe assembly 1, thimble assembly 1 one ends are provided with the support foot assembly 2 that can vertically stretch, the other end is connected with support on the engineering machinery chassis 24, but be equiped with the flexible screw mechanism 3 of drive sleeve assembly 1 on the thimble assembly 1 and to thimble assembly 1 flexible spacing stop motion mechanism 4, screw mechanism 3 comprises primary mover 31, have externally threaded circular shaft 32 and the hollow cylinder 33 that has negative thread, the output shaft of primary mover 31 is connected with the end of circular shaft 32, the support 311 of primary mover 31 is fixed in an end that is away from support foot assembly 2 in the thimble assembly 1, and the other end of thimble assembly 1 and hollow cylinder 33 are affixed.Be provided with intermediate hollow axle group 34 between circular shaft 32 and the hollow cylinder 33, intermediate hollow axle group 34 has negative thread by a joint and externally threaded intermediate hollow axle 341 constitutes, or have negative thread and externally threaded intermediate hollow axle 341 head and the tail by two joints or more than two joints and be formed by connecting, the two ends of intermediate hollow axle group 34 are threaded with circular shaft 32 and hollow cylinder 33 respectively.Thimble assembly 1 comprises the top sleeve pipe 11 that is connected with support on the engineering machinery chassis 24, the terminal sleeve pipe 12 affixed with support foot assembly 2, be socketed on joint of one between top sleeve pipe 11 and the terminal sleeve pipe 12 or the above intermediate casing 13 of a joint, intermediate hollow axle 341 equates with the quantity of intermediate casing 13, each intermediate hollow axle 341 is corresponding with an intermediate casing 13 respectively, in the present embodiment, intermediate hollow axle 341 is a joint with intermediate casing 13.Each intermediate casing 13 is installed with bearing seat 131 away from an end of support foot assembly 2, and on bearing seat 131, the moving sets cooperation place between the adjacent casing of thimble assembly 1 is provided with isolated degree of freedom's roller 14 to intermediate hollow axle 341 by bearings.Stop motion mechanism 4 comprises is located at the lip 41 that prevents on the thimble assembly 1 that thimble assembly 1 or screw mechanism 3 disconnect, and lip 41 is provided with master cock 42 from signal to the control setup of primary mover 31 that can send.Support foot assembly 2 has the overhanging cylinder of a hydraulic pressure, and overhanging cylinder is communicated with oil sources by a flexible pipe that can be wound up on the hose reel.
Present embodiment adopts primary mover 31 to drive screw mechanism 3 and drives telescopic leg, and the simple light screw thread type of drive of application structure can realize the expanding-contracting action of multistage supporting leg, is convenient to processing and manufacturing, has saved manpower and productive costs.Rotating by control primary mover 31 is stretched out supporting leg or is withdrawn, on the sleeve pipes at different levels of thimble assembly 1, be equiped with the master cock 42 of two groups of primary movers 31, when supporting legs at different levels stretch out fully or withdraw, wherein one group of master cock 42 is all touched, this moment, master cock 42 was sent electric signal, make primary mover 31 SELF CL, realized that control is intelligent.Present embodiment adopts the mode of screw mechanism 3 and thimble assembly 1 synchronization telescope, this mode realizes by bearing seat 131 is set at intermediate casing 13, bearing seat 131 plays a supportive role, make screw mechanism 3 pulsation-free operation more, also play simultaneously the effect of intermediate hollow axle 341 with intermediate casing 13 axial location, guarantee that intermediate casing 13 and intermediate hollow axle 341 are synchronized with the movement, make intermediate hollow axle 341 also stop in time when intermediate casing 13 is met stop motion mechanism 4 stop, avoided screw mechanism 3 to disconnect.
Embodiment 2: as Fig. 3, Fig. 4, Fig. 6 and shown in Figure 7, a kind of telescopic leg that is used for construction machinery and equipment of the present invention, comprise telescopic sleeve pipe assembly 1, thimble assembly 1 one ends are provided with the support foot assembly 2 that can vertically stretch, the other end is connected with support on the engineering machinery chassis 24, but be equiped with the flexible screw mechanism 3 of drive sleeve assembly 1 on the thimble assembly 1 and to thimble assembly 1 flexible spacing stop motion mechanism 4, screw mechanism 3 comprises primary mover 31, have externally threaded circular shaft 32 and the hollow cylinder 33 that has negative thread, the output shaft of primary mover 31 is connected with the end of circular shaft 32, the support 311 of primary mover 31 is fixed in an end of close support foot assembly 2 in the thimble assembly 1, and the other end of thimble assembly 1 and hollow cylinder 33 are affixed.Be provided with intermediate hollow axle group 34 between circular shaft 32 and the hollow cylinder 33, intermediate hollow axle group 34 by one the joint inwall be fixed with nut 342, outer wall is provided with externally threaded intermediate hollow axle 341 and constitutes, or be fixed with nut 342, outer wall by two joints or the above inwall of two joints and be provided with externally threaded intermediate hollow axle 341 head and the tail and be formed by connecting, also be fixed with nut 342 in the hollow cylinder 33, the intermediate hollow axle group 34 in the present embodiment is made up of two intermediate hollow axles 341.One end of intermediate hollow axle group 34 is threaded with circular shaft 32 by nut 342, and the nut 342 in the other end and the hollow cylinder 33 is threaded, and the end of circular shaft 32 and intermediate hollow axle 341 is provided with stop pin 343.Thimble assembly 1 comprises the top sleeve pipe 11 that is connected with support on the engineering machinery chassis 24, the terminal sleeve pipe 12 affixed with support foot assembly 2, be socketed on the joint of one between top sleeve pipe 11 and the terminal sleeve pipe 12 intermediate casing 13, the moving sets cooperation place between the adjacent casing of thimble assembly 1 is provided with isolated degree of freedom's roller 14.Stop motion mechanism 4 comprises is located at the lip 41 that prevents on the thimble assembly 1 that thimble assembly 1 or screw mechanism 3 disconnect, and lip 41 is provided with master cock 42 from signal to the control setup of primary mover 31 that can send.Support foot assembly 2 has the overhanging cylinder of a hydraulic pressure, and the overhanging cylinder of hydraulic pressure is communicated with oil sources by a flexible pipe that can be wound up on the hose reel.
Present embodiment adopts primary mover 31 to drive screw mechanism 3 and drives telescopic leg, and the simple light screw thread type of drive of application structure can realize the expanding-contracting action of multistage supporting leg, is convenient to processing and manufacturing, has saved manpower and productive costs.Rotating by control primary mover 31 is stretched out supporting leg or is withdrawn, on the sleeve pipes at different levels of thimble assembly 1, be equiped with the master cock 42 of two groups of primary movers 31, when supporting legs at different levels stretch out fully or withdraw, wherein one group of master cock 42 is all touched, this moment, master cock 42 was sent electric signal, make primary mover 31 SELF CL, realized that control is intelligent.Present embodiment sets firmly nut 342 in hollow cylinder 33 and intermediate hollow axle 341, can in each hollow shaft, offer negative thread like this, simplified manufacturing procedure, reduced cost, in this scheme bearing seat 131 can be set, can directly establish stop pin 343, not limit intermediate casing 13 and intermediate hollow axle 341 1 and be decided to be axially and be synchronized with the movement in the end that intermediate hollow axle 341 cooperates with nut 342, do not limit the two number yet and equate that necessarily form is more free.
Embodiment 3: a kind of telescopic leg that is used for construction machinery and equipment of the present invention, and the structure of its structure and embodiment 2 is basic identical, and difference only is the installation site difference of primary mover 31.As shown in Figure 5, the output shaft of primary mover 31 is connected with the end of hollow cylinder 33, and the support 311 of primary mover 31 is fixed in thimble assembly 1 an interior end away from support foot assembly 2, and the other end of thimble assembly 1 and circular shaft 32 are affixed.
Below in conjunction with the drawings and specific embodiments concrete pump truck of the present invention is described in further detail.
As Fig. 6, shown in Figure 7, a kind of concrete pump truck of the present invention, comprise chassis 24 and be installed in pumping mechanism 26, boom system 21 and supporting device 22 on the chassis 24, supporting device 22 comprises that four or four are with upper supporting leg 23, each supporting leg 23 is hinged with chassis 24 by a rotating shaft 25, and four or four is telescopic leg to have in the upper supporting leg 23 more than one or one.Telescopic leg is provided with two among this concrete pump truck embodiment, and the structure of employing telescopic leg embodiment 2, as shown in Figure 3, Figure 4, this telescopic leg comprises telescopic sleeve pipe assembly 1, and the support foot assembly 2 that is connected in telescopic sleeve pipe assembly 1 end, but be equiped with the flexible screw mechanism 3 of drive sleeve assembly 1 on the thimble assembly 1 and to thimble assembly 1 flexible spacing stop motion mechanism 4.Screw mechanism 3 comprises primary mover 31, have externally threaded circular shaft 32 and have the hollow cylinder 33 of negative thread, the output shaft of primary mover 31 is connected with the end of circular shaft 32, the support 311 of primary mover 31 is fixed in the end near thimble assembly 1, and the other end of thimble assembly 1 and hollow cylinder 33 are affixed.Be provided with intermediate hollow axle group 34 between circular shaft 32 and the hollow cylinder 33, intermediate hollow axle group 34 by one the joint inwall be fixed with nut 342, outer wall is provided with externally threaded intermediate hollow axle 341 and constitutes, or be fixed with nut 342, outer wall by two joints or the above inwall of two joints and be provided with externally threaded intermediate hollow axle 341 head and the tail and be formed by connecting, the intermediate hollow axle group 34 in the present embodiment is made up of two intermediate hollow axles 341.Also be fixed with nut 342 in the hollow cylinder 33, an end of intermediate hollow axle group 34 is threaded with circular shaft 32 by nut 342, and the nut 342 in the other end and the hollow cylinder 33 is threaded, and the end of circular shaft 32 and intermediate hollow axle 341 is provided with stop pin 343.Thimble assembly 1 comprises the top sleeve pipe 11 that is connected with support on the engineering machinery chassis 24, the terminal sleeve pipe 12 affixed with support foot assembly 2, be socketed on the joint of one between top sleeve pipe 11 and the terminal sleeve pipe 12 intermediate casing 13, the moving sets cooperation place between the adjacent casing of thimble assembly 1 is provided with isolated degree of freedom's roller 14.Stop motion mechanism 4 comprises is located at the lip 41 that prevents on the thimble assembly 1 that thimble assembly 1 or screw mechanism 3 disconnect, and lip 41 is provided with master cock 42 from signal to the control setup of primary mover 31 that can send.Support foot assembly 2 has the overhanging cylinder of a hydraulic pressure, and the overhanging cylinder of hydraulic pressure is communicated with oil sources by a flexible pipe that can be wound up on the hose reel.
Concrete pump truck of the present invention adopts primary mover 31 to drive screw mechanism 3 and drives telescopic leg, have compact conformation, supporting leg telescopic process steadily, control advantages such as easy, the operating efficiency of concrete pump truck is improved, can satisfy the demand of various operating modes, comformability is stronger.The simple light screw thread type of drive of present embodiment application structure gets final product the expanding-contracting action of the easily easy multistage supporting leg of realization, is convenient to processing and manufacturing, has saved manpower and productive costs.Rotating by control primary mover 31 is stretched out supporting leg or is withdrawn, on the sleeve pipes at different levels of thimble assembly 1, be equiped with the master cock 42 of two groups of primary movers 31, when supporting legs at different levels stretch out fully or withdraw, wherein one group of master cock 42 is all touched, this moment, master cock 42 was sent electric signal, make primary mover 31 SELF CL, realized that control is intelligent.Present embodiment sets firmly nut 342 in hollow cylinder 33 and intermediate hollow axle 341, can in each hollow shaft, offer negative thread like this, simplified manufacturing procedure, reduced cost, in this scheme bearing seat 131 can be set, can directly establish stop pin 343, not limit intermediate casing 313 and intermediate hollow axle 341 1 and be decided to be axially and be synchronized with the movement in the end that intermediate hollow axle 341 cooperates with nut 342, do not limit the two number yet and equate that necessarily form is more free.
The present invention is not limited to the above-mentioned specific embodiment, and the present invention can also be located at the screw mechanism 3 of telescopic component the outside of thimble assembly 1; The primary mover 31 of screw mechanism 3 can be motor, HM Hydraulic Motor equal power device; The output shaft of primary mover 31 can directly be connected also and can connect indirectly by driving device with the end of circular shaft 32 or hollow cylinder 33 by coupler.Above-mentioned conversion all can be considered the replacement that is equal to of the present invention, all should drop within protection scope of the present invention.
Claims (10)
1. telescopic component that drives by screw mechanism that is used for construction machinery and equipment, comprise telescope assembly (1), it is characterized in that described thimble assembly (1) but on be equiped with the flexible screw mechanism (3) of drive sleeve assembly (1) and to the flexible spacing stop motion mechanism (4) of thimble assembly (1), described screw mechanism (3) comprises primary mover (31), have externally threaded circular shaft (32) and have the hollow cylinder (33) of negative thread, described circular shaft (32) is threaded with hollow cylinder (33), or between circular shaft (32) and hollow cylinder (33), be provided with intermediate hollow axle group (34), described intermediate hollow axle group (34) has negative thread by a joint and externally threaded intermediate hollow axle (341) constitutes, or be threaded and form by having negative thread and externally threaded intermediate hollow axle (341) head and the tail more than two joints, the two ends of intermediate hollow axle group (34) are threaded with circular shaft (32) and hollow cylinder (33) respectively, primary mover (31) is located in the thimble assembly (1), the output shaft of primary mover (31) is connected with the end of circular shaft (32) or hollow cylinder (33), the support (311) of primary mover (31) is fixed in an end of thimble assembly (1), and the end that primary mover (31) is not installed in the other end of thimble assembly (1) and the screw mechanism (3) is affixed.
2. a telescopic leg that is made of the described telescopic component of claim 1 is characterized in that described thimble assembly (1) one end is provided with the support foot assembly (2) that can vertically stretch, and the other end is connected with support on the engineering machinery chassis (24).
3. telescopic leg according to claim 2, it is characterized in that described thimble assembly (1) comprises the top sleeve pipe (11) that is connected with support on the engineering machinery chassis (24), the terminal sleeve pipe (12) affixed with support foot assembly (2), be socketed on the joint of one between top sleeve pipe (11) and the terminal sleeve pipe (12) above intermediate casing (13), when being provided with intermediate hollow axle group (34) between circular shaft (32) and the hollow cylinder (33), described intermediate hollow axle (341) equates with the quantity of intermediate casing (13), each intermediate hollow axle (341) is corresponding with an intermediate casing (13) respectively, each intermediate casing (13) is installed with bearing seat (131) away from an end of top sleeve pipe (11), intermediate hollow axle (341) by bearings on bearing seat (131).
4. telescopic leg according to claim 2, it is characterized in that described thimble assembly (1) comprises the top sleeve pipe (11) that is connected with support on the engineering machinery chassis (24), the terminal sleeve pipe (12) affixed with support foot assembly (2), be socketed on the joint of one between top sleeve pipe (11) and the terminal sleeve pipe (12) above intermediate casing (13), when being provided with intermediate hollow axle group (34) between circular shaft (32) and the hollow cylinder (33), described hollow cylinder (33), the negative thread of intermediate hollow axle (341) is respectively and is fixed on hollow cylinder (33), the negative thread of the nut (342) of intermediate hollow axle (341) inwall, one end of intermediate hollow axle group (34) is threaded with circular shaft (32) by nut (342), nut (342) in the other end and the hollow cylinder (33) is threaded, and the end that circular shaft (32) and each intermediate hollow axle (341) cooperate with each nut (342) is provided with the stop pin (343) that prevents screw mechanism (3) disconnection.
5. according to each described telescopic leg in the claim 2 to 4, it is characterized in that stop motion mechanism (4) on the described thimble assembly (1) comprises prevents that thimble assembly (1) disconnects and limits the lip (41) of its maximum retraction degree, and lip (41) is provided with master cock (42) from signal to primary mover (31) control setup that can send.
6. according to each described telescopic leg in the claim 2 to 4, it is characterized in that the moving sets cooperation place between the adjacent casing of described thimble assembly (1) is provided with isolated degree of freedom's roller (14).
7. according to each described telescopic leg in the claim 2 to 4, it is characterized in that described support foot assembly (2) has the overhanging cylinder of a hydraulic pressure, described overhanging cylinder is communicated with oil sources by a flexible pipe that can be wound up on the hose reel.
8. concrete pump truck with the described telescopic leg of claim 2, it is characterized in that comprising chassis (24) and be installed in pumping mechanism (26), boom system (21) and supporting device (22) on the chassis (24), described supporting device (22) comprises four with upper supporting leg (23) be installed in support on the chassis (24), each supporting leg (23) one end is provided with the support foot assembly (2) that can vertically stretch, the other end is connected with support, it is characterized in that described four is described telescopic leg to have more than one in the upper supporting leg (23).
9. concrete pump truck according to claim 8, it is characterized in that described thimble assembly (1) comprises the top sleeve pipe (11) that is connected with support on the engineering machinery chassis (24), the terminal sleeve pipe (12) affixed with support foot assembly (2), be socketed on the joint of one between top sleeve pipe (11) and the terminal sleeve pipe (12) above intermediate casing (13), when being provided with intermediate hollow axle group (34) between circular shaft (32) and the hollow cylinder (33), described intermediate hollow axle (341) equates with the quantity of intermediate casing (13), each intermediate hollow axle (341) is corresponding with an intermediate casing (13) respectively, each intermediate casing (13) is installed with bearing seat (131) away from an end of top sleeve pipe (11), intermediate hollow axle (341) by bearings on bearing seat (131).
10. concrete pump truck according to claim 8, it is characterized in that described thimble assembly (1) comprises the top sleeve pipe (11) that is connected with support on the engineering machinery chassis (24), the terminal sleeve pipe (12) affixed with support foot assembly (2), be socketed on the joint of one between top sleeve pipe (11) and the terminal sleeve pipe (12) above intermediate casing (13), when being provided with intermediate hollow axle group (34) between circular shaft (32) and the hollow cylinder (33), described hollow cylinder (33), the negative thread of intermediate hollow axle (341) is respectively and is fixed on hollow cylinder (33), the negative thread of the nut (342) of intermediate hollow axle (341) inwall, one end of intermediate hollow axle group (34) is threaded with circular shaft (32) by nut (342), nut (342) in the other end and the hollow cylinder (33) is threaded, and the end that circular shaft (32) and each intermediate hollow axle (341) cooperate with each nut (342) is provided with the stop pin (343) that prevents screw mechanism (3) disconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710035675A CN101121399B (en) | 2007-09-03 | 2007-09-03 | Telescopic component and support for engineering machinery and concrete pump vehicle with the support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710035675A CN101121399B (en) | 2007-09-03 | 2007-09-03 | Telescopic component and support for engineering machinery and concrete pump vehicle with the support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101121399A CN101121399A (en) | 2008-02-13 |
| CN101121399B true CN101121399B (en) | 2010-05-19 |
Family
ID=39083957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710035675A Expired - Fee Related CN101121399B (en) | 2007-09-03 | 2007-09-03 | Telescopic component and support for engineering machinery and concrete pump vehicle with the support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101121399B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837681A (en) * | 2012-10-08 | 2012-12-26 | 南京晨光水山电液特装有限公司 | Stretching structure for baffle block of three-sectional supporting leg cylinder |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582590B (en) * | 2012-01-29 | 2014-12-10 | 三一汽车制造有限公司 | Supporting system and engineering machine with same |
| CN103395410B (en) * | 2013-08-07 | 2016-03-16 | 中联重科股份有限公司 | Telescopic support leg and concrete pump truck with same |
| CN105923556B (en) * | 2016-06-29 | 2018-02-16 | 河南省黄河防爆起重机有限公司 | Lorry-mounted crane more piece nested type big elevating height Telescopic support leg device |
| CN109138706B (en) * | 2017-06-14 | 2021-10-01 | Hcs英泰克德国股份有限公司 | Drive device for a motor vehicle door and motor vehicle |
| CN113969666A (en) * | 2021-09-09 | 2022-01-25 | 昆山世越建材设备有限公司 | Concrete pump truck |
| JP7215788B1 (en) | 2022-04-21 | 2023-01-31 | 株式会社南武 | cylinder type actuator |
-
2007
- 2007-09-03 CN CN200710035675A patent/CN101121399B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837681A (en) * | 2012-10-08 | 2012-12-26 | 南京晨光水山电液特装有限公司 | Stretching structure for baffle block of three-sectional supporting leg cylinder |
| CN102837681B (en) * | 2012-10-08 | 2013-09-25 | 南京晨光水山电液特装有限公司 | Stretching structure for baffle block of three-sectional supporting leg cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101121399A (en) | 2008-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101121399B (en) | Telescopic component and support for engineering machinery and concrete pump vehicle with the support | |
| CN102094870B (en) | Multistage telescopic machanism and engineering equipment | |
| CN201092737Y (en) | Telescopic component and supporting leg for engineering machinery as well as concrete pump vehicle containing said supporting leg | |
| CN203734219U (en) | Mobile hydraulic cable laying machine | |
| CN103010976B (en) | Hydraulic system for controlling oil cylinders to sequentially stretch, horizontal supporting leg system and engineering machinery | |
| CN104499750A (en) | Two-storey mechanical parking system | |
| CN102085851B (en) | Multistage telescopic mechanism sequence control device and engineering equipment comprising same | |
| CN101648558A (en) | Telescopic outrigger, and telescopic outrigger assembly and concrete pump truck with the same | |
| CN101830211A (en) | Semitrailer lifting landing leg | |
| CN106337856A (en) | Servo hydraulic device | |
| CN201991872U (en) | Multilevel telescoping mechanism and engineering device | |
| CN102361249A (en) | Automatic remote control electric installation and maintenance vehicle | |
| CN105465097B (en) | Engineering machinery and its multi-stage expansion mechanism | |
| CN203271146U (en) | Movable type cantilever crane equipment and concrete conveying equipment for concrete pump | |
| CN104220180B (en) | For transferring the motion to the power transmission shaft of roller | |
| CN103303269A (en) | Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck | |
| CN104753248A (en) | Electric motor mechanism | |
| CN204586827U (en) | A kind of car jacking system and car | |
| CN209602000U (en) | Buried pipeline installs crane | |
| CN203661306U (en) | Integrated movable emergency communication base station | |
| CN102849661A (en) | Self-propelled vertical column type lifting platform | |
| CN202162803U (en) | Automatic remote control electric power installation and maintenance vehicle | |
| CN102003514B (en) | Three-section electric flexible device | |
| CN220078369U (en) | Tire crane integrated electrohydraulic steering system and tire crane thereof | |
| CN205135658U (en) | Gunniting trolley |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130502 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 31 industrial city, Changsha economic and Technological Development Zone, Hunan, Changsha Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20130903 |