CN207918319U - turntable and engineering machinery - Google Patents

Abstract

The utility model is related to technical field of engineering machinery, more particularly to a kind of turntable and engineering machinery.Turntable provided by the utility model, including base pitch, at least one section stretch section and pushing handle telescopic control mechanism, base pitch with the revolving support of engineering machinery for connecting, and at least one section, which is stretched to save, telescopically to be connect with base pitch, and pushing handle telescopic control mechanism stretches section at least one section of control and stretches relative to base pitch.The utility model changes the mentality of designing that traditional turntable is structure as a whole, turntable is set as telescopic, it can prevent from causing the structures such as arm support to interfere with barrier because turntable height is too small, be effectively improved the operating flexibility of engineering machinery, improve the operating efficiency of engineering machinery.

Description

Turntable and engineering machinery

Technical field

The utility model is related to technical field of engineering machinery, more particularly to a kind of turntable and engineering machinery.

Background technology

Turntable is the important feature of the engineering machinery such as crane and shotcrete vehicle, and engineering machinery is installed on by revolving support Chassis on, and for installing the structures such as arm support.Existing turntable is usually an integral structure, non-telescoping, and length is certain, and Based on this non-telescoping turntable, the arm support etc. of engineering machinery is supported on the structure on turntable and is easy in operation process and barrier Hinder object to interfere, reduce the operating efficiency of engineering machinery, influences the operating flexibility of engineering machinery.This is sentenced for shotcrete vehicle It illustrates.

Shotcrete vehicle is a kind of engineering machinery for realizing spray operation, when work, passes through pipeline using concrete pump By at the spray head of concrete conveyance to arm support tail end and using the compressed air with accelerator by concrete ejection to lane to be painted Road metope.As shown in Figure 1, the turntable 1 ' of existing shotcrete vehicle is non-telescoping, top is hinged with arm support 2 ', for realizing arm support 2 ' Revolution.Since shotcrete vehicle needs the construction operation in middle Pollen sterility, shotcrete vehicle that must have enough passabilities, institute With the height for vehicle travelling state of whitewashing is restricted, and the longest of the maximum height H ' and arm support 2 ' that lead to turntable 1 ' stretch out length Degree is restricted.And since the maximum height H ' of turntable 1 ' is restricted, and turntable 1 ' is non-telescoping, therefore, shotcrete vehicle Operating flexibility is poor, in operation process, the case where arm support 2 ' is interfered with step or Core Soil often occurs, as shown in Fig. 2, If the height of 2 grades of steps is further added by, arm support 2 ' will interfere with 2 grades of steps, cause to hinder to construction operation, cause to modify Core Soil or step could complete construction, influence construction efficiency.

Utility model content

A technical problem to be solved in the utility model is：Based on existing turntable, the branch such as the arm support of engineering machinery It holds and is easy to interfere with barrier in operation process in the structure on turntable, influence operating efficiency and operating flexibility.

In order to solve the above-mentioned technical problem, the utility model provides a kind of turntable comprising base pitch, at least one section stretch section And pushing handle telescopic control mechanism, base pitch for connect with the revolving support of engineering machinery, at least one section stretch save telescopically with base pitch It connects, pushing handle telescopic control mechanism stretches for controlling at least one section and stretching to save relative to base pitch.

Optionally, pushing handle telescopic control mechanism includes at least one in oil cylinder combined mechanism, rope mechanism and oil cylinder bolt mechanism It is a.

Optionally, oil cylinder combined mechanism includes telescopic oil cylinder, and telescopic oil cylinder is single-stage telescopic oil cylinder or multi-stage expansion oil cylinder.

Optionally, turntable includes that at least two sections stretch section, and oil cylinder combined mechanism includes along stretching the stretching direction of section cloth successively At least two telescopic oil cylinders set, and at least two telescopic oil cylinders stretch to control at least two sections and stretch to save and stretch successively successively.

Optionally, it is identical and be arranged in a one-to-one correspondence, each flexible oil at least two sections to stretch joint number amount at least two telescopic oil cylinders Cylinder includes the first structure and the second structure that simultaneously energy relative telescopic is oppositely arranged along telescopic direction, wherein：Along stretching section Direction is stretched out, the first structure for being located at the telescopic oil cylinder of most upstream is connect with base pitch so that this is located at the telescopic oil cylinder of most upstream Second structure can be flexible relative to base pitch；Positioned at most downstream telescopic oil cylinder the second structure with it is corresponding stretch section can synchronize stretch The connection of contracting ground；And in addition to the telescopic oil cylinder positioned at most downstream, the second structure of remaining each telescopic oil cylinder with respective downstream The first structure of adjacent telescopic oil cylinder can connect to synchronization telescope to form bigeminy structure, and each bigeminy structure is wrapped with itself The corresponding section of stretching of the second structure included can connect to synchronization telescope.

Optionally, the first structure included by least one bigeminy structure and the second knot included by the bigeminy structure itself The corresponding section of stretching of structure can connect to synchronization telescope, and/or, the second structure included by least one bigeminy structure two is coupled with this The corresponding section of stretching of the second structure included by structure itself can connect to synchronization telescope.

Optionally, the corresponding two neighboring telescopic oil cylinder of at least one bigeminy structure is arranged in the same direction, and/or, it is at least one The corresponding two neighboring telescopic oil cylinder reversed arrangement of bigeminy structure.

Optionally, along the stretching direction for stretching section, first structure and the base pitch for being located at the telescopic oil cylinder of most upstream are hinged, position It is hinged in the second structure of the telescopic oil cylinder of most downstream and corresponding section of stretching, and in addition to the telescopic oil cylinder positioned at most downstream, The first structure of the second structure telescopic oil cylinder adjacent with respective downstream of remaining each telescopic oil cylinder is fixedly connected to form bigeminy Structure, each bigeminy structure with itself included by the second structure corresponding to stretch section hinged.

On the other hand the utility model additionally provides a kind of engineering machinery comprising turn of revolving support and the utility model Platform.

Optionally, engineering machinery is shotcrete vehicle.

The utility model changes the mentality of designing that traditional turntable is structure as a whole, and turntable is set as telescopic, is made Turntable can stretch the height that section meets in retracted mode engineering machinery transport condition by controlling it in the process of moving Limitation, and height can be changed relative to the stretching of base pitch by neatly controlling to stretch to save during engineer machinery operation, prevent Only the structures such as arm support are caused to be interfered with barrier because turntable height is too small, it can be with the operating flexibility of betterment works machinery Property, improve the operating efficiency of engineering machinery.

By the way that the exemplary embodiment of the utility model is described in detail referring to the drawings, the utility model its Its feature and its advantage will become apparent.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, other drawings may also be obtained based on these drawings.

Fig. 1 shows the combining structure schematic diagram of existing arm support and turntable.

Fig. 2 shows the working state schematic representations of the shotcrete vehicle based on composite structure shown in Fig. 1.

Fig. 3 shows the overall structure diagram of the shotcrete vehicle of one embodiment of the utility model.

Fig. 4 shows the combining structure schematic diagram of Fig. 3 intermediate stations, revolving support and arm support.

Fig. 5 shows the combining structure schematic diagram of Fig. 4 intermediate stations and revolving support.

Fig. 6 shows the schematic diagram of the pushing handle telescopic control mechanism of Fig. 5 intermediate stations.

Fig. 7 shows the first of Fig. 5 intermediate stations stretching status diagram for stretching section.

Fig. 8 shows that the first of Fig. 5 intermediate stations stretches section and second and stretch the status diagram stretched out of section.

Fig. 9 shows the working state schematic representation of shotcrete vehicle shown in Fig. 3.

In figure：

1 ', turntable；2 ', arm support；

1, turntable；11, base pitch；12, first stretches section；13, second stretches section；14, the first telescopic oil cylinder；15, the second flexible oil Cylinder；

2, revolving support；3, arm support；4, amplitude oil cylinder；5, spray head.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to this practicality Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having There is the every other embodiment carried out and obtained under the premise of creative work, shall fall within the protection scope of the present invention.

Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or with specific azimuth configuration and operation, because This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

In the description of the present invention, it should be understood that limiting zero using the words such as " first ", " second " Part, it is only for convenient for being distinguished to corresponding parts, there is no Stated otherwise such as, above-mentioned word there is no particular meaning, Therefore it should not be understood as the limitation to scope of protection of the utility model.

Fig. 3-9 shows the shotcrete vehicle based on one embodiment extension type turntable of the utility model.With reference to Fig. 3-9, this reality With novel provided turntable comprising base pitch 11, at least one section stretch section and pushing handle telescopic control mechanism, and base pitch 11 is used for and engineering The revolving support 2 of machinery connects, and at least one section is stretched section and telescopically connect with base pitch 11, and pushing handle telescopic control mechanism is for controlling at least It is flexible relative to base pitch 11 that one section stretches section.

The turntable 1 of the utility model no longer be traditional integral structure, but include base pitch 11, at least one section stretch section with And pushing handle telescopic control mechanism, and under the control of pushing handle telescopic control mechanism, respectively stretch energy saving enough opposite base pitch 11 and stretch, this makes this The turntable 1 of utility model becomes the turntable of extension type, since the turntable of this extension type can be by changing stretching for itself Therefore contracting state and the bottom end height of structure that neatly changes arm support etc. and be carried on turntable 1 can meet for greater flexibility Engineering machinery is in transport condition or construction operation state to the different demands of height, it is particularly possible to pass through control in operation process Turntable 1 processed prevents the structures such as arm support from being interfered with barrier in stretching state, improves operating flexibility, improves operation effect Rate.

The pushing handle telescopic control mechanism of the utility model can respectively stretch section as long as can realize there are many embodiment to turntable 1 Extension and contraction control.As one such embodiment, rope machine may be used in the pushing handle telescopic control mechanism of the utility model Structure, and rope mechanism may include oil cylinder rope mechanism and/or elevator rope mechanism.As another embodiment therein, originally The pushing handle telescopic control mechanism of utility model can also use oil cylinder bolt mechanism, using the cooperation of oil cylinder and cylinder pin and arm pin, realize To respectively stretching the extension and contraction control of section.As another embodiment therein, the pushing handle telescopic control mechanism of the utility model can also be adopted With oil cylinder combined mechanism, it is different from oil cylinder rope mechanism and oil cylinder bolt mechanism, oil cylinder combined mechanism does not include rope or arm pin Cylinder pin, and only including the structure (such as gear) other than telescopic oil cylinder and rope or arm pin cylinder pin including telescopic oil cylinder or only Composite structure, merely with telescopic oil cylinder or using the structure (such as gear) other than telescopic oil cylinder and rope or arm pin cylinder pin Composite structure realizes the extension and contraction control to respectively stretching section, wherein telescopic oil cylinder both can be single-stage telescopic oil cylinder, or more Grade telescopic oil cylinder.Certainly, the pushing handle telescopic control mechanism of the utility model can also use rope mechanism, oil cylinder bolt mechanism and oil cylinder The composite structure of combined mechanism realizes the extension and contraction control to respectively stretching section.As it can be seen that the pushing handle telescopic control mechanism of the utility model can be with Including at least one of oil cylinder combined mechanism, rope mechanism and oil cylinder bolt mechanism.

In the present invention, according to oil cylinder combined mechanism as pushing handle telescopic control mechanism, then when turntable 1 includes at least two When section stretches section, oil cylinder combined mechanism can both only include a multi-stage expansion oil cylinder, directly be controlled using the multi-stage expansion oil cylinder It makes each section and stretches to save and stretch out successively；Can also include at least two telescopic oil cylinders being sequentially arranged along direction is stretched out, by making this At least two telescopic oil cylinders stretch successively to be stretched section controlling each section and stretches successively, and set this at least two is stretched in this case Contracting oil cylinder, both can be all using single-stage telescopic oil cylinder, can also be all using multi-stage expansion oil cylinder, or can also partly adopt With single-stage telescopic oil cylinder, another part uses multi-stage expansion oil cylinder, moreover, the quantity of set telescopic oil cylinder in this case Both can be identical as the quantity for stretching section, can also be different from the quantity for stretching section, these can stretch the extension elongation of section according to each section It is required that etc. actual conditions be configured.

And as a kind of preferred embodiment for stretching the oil cylinder combined mechanism that section stretches successively for controlling at least two sections, oil Cylinder combined mechanism may include identical as joint number amount is stretched and have along stretching with each section stretches that section is arranged in a one-to-one correspondence at least two Contracting direction is oppositely arranged and the telescopic oil cylinder of the first structure and the second structure of energy relative telescopic, wherein：Along the stretching for stretching section Direction, the first structure for being located at the telescopic oil cylinder of most upstream are connect (as hinged) with base pitch 11 so that this is located at the flexible of most upstream Second structure of oil cylinder can be flexible relative to base pitch 11；The second structure positioned at the telescopic oil cylinder of most downstream stretches section with corresponding It can connect to synchronization telescope (as hinged)；And in addition to the telescopic oil cylinder positioned at most downstream, the second of remaining each telescopic oil cylinder The first structure of the structure telescopic oil cylinder adjacent with respective downstream, which can be connected to synchronization telescope and (is such as fixedly connected), forms bigeminy Structure, each bigeminy structure with itself included by the corresponding section of stretching of the second structure can connect to synchronization telescope (as hinged).

Based on this preferred oil cylinder combined mechanism, each telescopic oil cylinder stretches successively, and each section can be driven to stretch section successively It is flexible, realize the orderly flexible of turntable 1 so that shotcrete vehicle can according to travel or operation to the different demands of height come neatly Adjust the maximum height of turntable 1；Also, include telescopic oil cylinder due to making pushing handle telescopic control mechanism only, without including rope or cylinder The other structures such as pin arm pin, therefore, structure is simpler, and control is more convenient；Moreover, adjacent expansion oil cylinder is connected to each other, at For cluster structure, this not only can make the structure of pushing handle telescopic control mechanism compacter, be further reduced pushing handle telescopic control mechanism Occupied space, arrangement of the pushing handle telescopic control mechanism in turntable 1 of being more convenient for can also make pushing handle telescopic control mechanism have the rigid of bigger Degree improves the flexible reliability of turntable 1.

In the embodiment of this preferred oil cylinder combined mechanism, due to the first structure and included by bigeminy structure Two structures always synchronization telescope, therefore, in order to realize bigeminy structure with itself included by the second structure it is corresponding stretch section can Synchronization telescope connects, both can be by the first structure included by bigeminy structure and the second structure included by the bigeminy structure itself Corresponding section of stretching can connect to synchronization telescope, can also be by the second structure and itself institute of the bigeminy structure included by bigeminy structure Including the corresponding section of stretching of the second structure can connect to synchronization telescope, or can also be by the first structure included by bigeminy structure Section of stretching corresponding with the second structure included by the bigeminy structure can connect to synchronization telescope simultaneously with the second structure.When oil cylinder group When to close mechanism include at least two bigeminy structures, each bigeminy structure with itself included by the second structure corresponding stretch between section Can synchronization telescope connection realization method can be identical or different, you can with the first structure included by least one bigeminy structure It can be connected to synchronization telescope with the corresponding section of stretching of the second structure included by itself, and/or, included by least one bigeminy structure The second structure with itself included by the corresponding section of stretching of the second structure can connect to synchronization telescope.

In the present invention, the first structure of telescopic oil cylinder can be one in the cylinder rod and cylinder barrel of telescopic oil cylinder, Correspondingly, the second structure of telescopic oil cylinder can be another in the cylinder rod and cylinder barrel of telescopic oil cylinder；Moreover, two neighboring stretch The first structure of contracting oil cylinder can be identical or different, i.e., two neighboring telescopic oil cylinder can arrange in the same direction or reversed arrangement, is not difficult Understand, when two neighboring telescopic oil cylinder is arranged in the same direction, the first structure of two neighboring telescopic oil cylinder is identical, while for cylinder rod or It is simultaneously cylinder barrel, and when two neighboring telescopic oil cylinder reversed arrangement, the first structure of two neighboring telescopic oil cylinder is different, wherein One be cylinder barrel when, another then be cylinder rod.Wherein it is preferred to two neighboring telescopic oil cylinder reversed arrangement, such bigeminy structure It is connected to be formed or connected by two cylinder rods by two cylinder barrels and be formed, is formed by connecting by cylinder barrel and cylinder rod relative to bigeminy structure Situation connects more convenient secured.When oil cylinder combined mechanism includes the two neighboring telescopic oil cylinder of at least two groups, one group adjacent two The arrangement of a telescopic oil cylinder can be identical or different with the arrangement of another group of two neighboring telescopic oil cylinder, you can so that The corresponding two neighboring telescopic oil cylinder of a bigeminy structure is arranged in the same direction less, and/or, at least one bigeminy structure is corresponding adjacent Two telescopic oil cylinder reversed arrangements.

The turntable 1 of the utility model can be applied to the various engineering machinery such as crane and shotcrete vehicle, so that having The engineering machinery of the utility model turntable 1 can meet traveling by controlling turntable 1 in retracted mode in the process of moving Height limitation when state, and the maximum high of turntable 1 can be increased in stretching state by controlling turntable 1 in operation process Degree, prevents the structures such as the arm support being carried on turntable 1 from being interfered with higher-height barrier, is effectively improved operating flexibility Property, and improve operating efficiency.

Wherein, the turntable 1 of the utility model is particularly applicable to shotcrete vehicle, to solve existing shotcrete vehicle because turntable can not The problem of arm support is interfered with Core Soil or step caused by flexible so that when shotcrete vehicle encounter in the construction process it is higher Step or Core Soil when, can by control turntable 1 stretch section stretch promoted arm support cross the obstacles such as Core Soil or step The ability of object, due to no longer needing to frequently modify the barriers such as Core Soil, it is thus possible to improve the working efficiency of shotcrete vehicle, improves The place adaptability of shotcrete vehicle, moreover, because the case where being stretched out relative to only arm support 3, the stretching of turntable 1 can further increase The cloth height of shotcrete vehicle, therefore, the turntable 1 of the utility model can also be solved because of the reasons institute such as 3 collapsing length of arm support is limited Caused by the smaller problem of cloth height, further expand the cloth range of shotcrete vehicle, effectively promote the construction operation of shotcrete vehicle Ability.

So the utility model additionally provides a kind of engineering machinery, such as shotcrete vehicle comprising the utility model turns Platform.

The utility model is described further by taking shotcrete vehicle shown in Fig. 3-9 as an example below.

As shown in figure 3, shotcrete vehicle includes turntable 1, revolving support 2, arm support 3, amplitude oil cylinder 4 and spray head 5, wherein Revolving support 2 is arranged on the chassis of shotcrete vehicle, and turntable 1 is connected between revolving support 2 and arm support 3 for realizing arm support 3 Revolution, amplitude oil cylinder 4 are articulated with the luffing for controlling arm support 3, spray head 5 between arm support 3 and turntable 1 and are arranged in arm support 3 End for realizing concrete ejection.Since revolving support 2, arm support 3, amplitude oil cylinder 4 and spray head 5 may be used now There is structure, therefore, be not described in detail herein；And in order to solve shotcrete vehicle during construction operation arm support 2 be easy and core The problem of soil or step interfere, in this embodiment, turntable 1 no longer use existing integral structure, so, below only Emphasis illustrates the turntable 1 of the embodiment.

As Figure 4-Figure 6, in this embodiment, turntable 1 includes that the section of base pitch 11, two stretches section and as pushing handle telescopic control mechanism Oil cylinder combined mechanism.

Wherein, base pitch 11 is connect with revolving support 2, realizes the connection of turntable 1 and revolving support 2 so that turntable 1 can be It is turned round under the drive of revolving support 2.

Two sections are stretched section and are telescopically connect with base pitch 11, convenient for realizing the length of turntable 1 under the control of oil cylinder combined mechanism Degree variation.Specifically, by Fig. 4 and Fig. 5 it is found that it is respectively along stretch out that direction is sequentially arranged that two sections of the embodiment, which stretch section, One, which stretches section 12 and second, stretches section 13, wherein：First stretches the outside that section 12 is sheathed on base pitch 11 so that first stretches section 12 can be opposite It stretches in base pitch 11；Second, which stretches section 13, is sheathed on the first outside for stretching section 12 so that second stretches section 13 can be relative to the One, which stretches section 12, stretches；And second stretch section 13 top connect with arm support 3 so that arm support 3 is supported on turntable 1, to work as When turntable 1 is turned round with revolving support 2, arm support 3 can be driven to turn round together.Certainly, in other embodiments, first stretches section 12 It can also be nested in the inside of base pitch 11, similarly, second, which stretches section 13, can also be nested in the first inside for stretching section 12, as long as that This being capable of relative telescopic.

Oil cylinder combined mechanism stretches for controlling two sections of the embodiment and stretching to save relative to base pitch 11 successively.In the embodiment In, oil cylinder combined mechanism includes two telescopic oil cylinders, the two telescopic oil cylinders are sequentially arranged along stretching direction and are stretched with two sections Section corresponds, and the two telescopic oil cylinders stretch successively, can control that first segment stretches section 12 and the second section is stretched section 13 and stretched successively Contracting.

Specifically, by Fig. 5 and Fig. 6 it is found that two telescopic oil cylinders of the embodiment are respectively the first telescopic oil cylinder 14 and Two telescopic oil cylinders 15, the first telescopic oil cylinder 14 and the second telescopic oil cylinder 15 are sequentially arranged along direction is stretched out so that first is flexible Oil cylinder 14 becomes the telescopic oil cylinder positioned at most upstream, and it is 12 correspondings to stretch section with first, stretches for controlling first and saves 12 relative to base pitch 11 it is flexible；Second telescopic oil cylinder 15 becomes the telescopic oil cylinder positioned at most downstream, and it is 13 correspondings to stretch section with second, for control second It stretches section 13 and stretches the flexible of section 12 relative to first.

Also, in this embodiment, 15 reversed arrangement of the first telescopic oil cylinder 14 and the second telescopic oil cylinder.Specifically, such as Fig. 5 Shown in Fig. 6, the cylinder rod of the first telescopic oil cylinder 14 downward, the cylinder rod of the second telescopic oil cylinder 15 upward, the first telescopic oil cylinder 14 Cylinder barrel is adjacent with the cylinder barrel of the second telescopic oil cylinder 15, this makes the cylinder rod of the first telescopic oil cylinder 14 be used as the first telescopic oil cylinder 14 First structure, the cylinder barrel of the first telescopic oil cylinder 14 are used as the second structure of the first telescopic oil cylinder 14, the cylinder of the second telescopic oil cylinder 15 Cylinder is used as the first structure of the second telescopic oil cylinder 15, and the cylinder rod of the second telescopic oil cylinder 15 is used as the second knot of the second telescopic oil cylinder 15 Structure.

First segment can be driven to stretch section 12 and the in order to make the first telescopic oil cylinder 14 and the second telescopic oil cylinder 15 stretch successively Two sections stretch section 13 and stretch successively, by Fig. 5 and Fig. 6 it is found that in this embodiment, cylinder rod and the base pitch 11 of the first telescopic oil cylinder 14 exist K1 is point articulated so that the cylinder barrel of the first telescopic oil cylinder 14 stretches relative to the cylinder rod of the first telescopic oil cylinder 14 can realize relatively In the flexible of base pitch 11；The cylinder barrel of first telescopic oil cylinder 14 is fixedly connected with the cylinder barrel of the second telescopic oil cylinder 15 in F points so that the The cylinder barrel of the cylinder barrel of one telescopic oil cylinder 14 and the second telescopic oil cylinder 15 connects to form bigeminy structure, to when the first telescopic oil cylinder 14 Cylinder barrel it is flexible relative to the cylinder rod of the first telescopic oil cylinder 14 when, can drive the cylinder barrel of the second telescopic oil cylinder 15 simultaneously relative to Base pitch 11 stretches；Also, the cylinder barrel of the second telescopic oil cylinder 15, which is also stretched with first, saves 12, realization bigeminy structures point articulated in K2 With first stretch between section 12 can synchronization telescope connect so that when bigeminy structure is stretched relative to base pitch 11 (i.e. first stretch it is oily When the cylinder barrel of cylinder 15 is flexible), can synchronous drive first stretch that section 12 is flexible relative to base pitch 11, realize and stretch stretching for section 12 to first Contracting control；Moreover, with second to stretch section 13 point articulated in K3 for the cylinder rod of the second telescopic oil cylinder 15 so that the cylinder of the second telescopic oil cylinder 15 Bar and second stretch realize between section 13 can synchronization telescope connect, to when the cylinder rod of the second telescopic oil cylinder 15 it is flexible relative to second When the cylinder barrel (bigeminy structure) of oil cylinder 15 is flexible, can synchronous drive second stretch section 13 relative to first to stretch section 12 flexible, realize The extension and contraction control of section 13 is stretched to the second section.

Based on above structure, as shown in Figure 7 and Figure 8, the stretching process of the turntable 1 of the embodiment is：First, such as Fig. 7 institutes Show, it is oil-filled to the rodless cavity of the first telescopic oil cylinder 14 so that the cylinder barrel of the first telescopic oil cylinder 14 is stretched out relative to base pitch 11, then The second telescopic oil cylinder 15 of cylinder barrel drive of first telescopic oil cylinder 14, first stretch section 12 and second and stretch section 13 simultaneously relative to base pitch 11 stretch out；Later, as shown in figure 8, the rodless cavity to the second telescopic oil cylinder 15 is oil-filled so that the cylinder rod phase of the second telescopic oil cylinder 15 The cylinder barrel (bigeminy structure) of second telescopic oil cylinder 15 is stretched out, then the cylinder rod of the second telescopic oil cylinder 15 drives second to stretch section 13 Section 12 is stretched relative to first to stretch out, so far, first, which stretches section 12 and second, stretches section and 13 stretch out.

Similarly, when needing turntable 1 to be in retracted mode, the rod chamber and the of the second telescopic oil cylinder 15 need to be only given successively One telescopic oil cylinder 14 has cylinder chamber oil-filled, you can control second stretches section 13 and first and stretches section 12 retracts successively.

As it can be seen that the embodiment can realize that two sections of turntable 1 stretch the flexible of section using two telescopic oil cylinders of reversed arrangement Control, structure is relatively simple compact, and flexible reliability is higher.Moreover, in this embodiment, telescopic oil cylinder and base pitch 11 or stretch Between section by articulated manner realize can synchronization telescope connect, due to can make to stretch needed for guarantee while synchronization telescope Oil cylinder and base pitch 11 are stretched certain rotation can occur between section, prevent clamping stagnation, therefore, are advantageously implemented more smoothly turn Platform 1 stretches out process.

As shown in figure 9, the turntable 1 based on the embodiment, when shotcrete vehicle encounters higher 2 grades of steps in the construction process When, the section of stretching of oil cylinder combined mechanism control turntable 1 can be utilized to stretch out, increase the maximum height H of turntable 1 so that the bottom of arm support 3 End avoids frequent conditioning beds rank and core in work progress higher than 2 grades of steps to prevent arm support 3 from being interfered with 2 grades of steps The generation of native phenomenon so that construction operation can be carried out more continuously, and realization effectively improves shotcrete vehicle operating efficiency.

It should be noted that, although in above-described embodiment bigeminy structure with first stretch section 12 can synchronization telescope to connect be logical Cross the cylinder barrel (first structure i.e. included by bigeminy structure) of the second telescopic oil cylinder 15 with first stretch section 12 can synchronization telescope connect Connect realization, but in fact, as modification, it can also be by the cylinder barrel of the first telescopic oil cylinder 14 (i.e. included by bigeminy structure Second structure) with first stretch section 12 can synchronization telescope connect and realize, or can also by the cylinder barrel of the first telescopic oil cylinder 14 And second the cylinder barrel (first structure and the second structure i.e. included by bigeminy structure) of telescopic oil cylinder 15 section 12 is stretched with first It can synchronization telescope connection.

It also should be noted that although above-described embodiment is only illustrated for saving the turntable 1 for stretching section with two, However, those skilled in the art should understand that, in the other embodiment of the utility model, turntable 1 can also include that two sections are above Section is stretched, correspondingly, the oil cylinder combined mechanism for being used as pushing handle telescopic control mechanism can also include more than two telescopic oil cylinders, and respectively stretch Each telescopic oil cylinder and base pitch 11 and connection type between section is stretched between contracting oil cylinder and respectively, is referred to above-described embodiment reality It applies, so, it is not described in detail herein.

The foregoing is merely the exemplary embodiments of the utility model, are not intended to limit the utility model, all in this reality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model Within protection domain.

Claims (10)

1. a kind of turntable (1), which is characterized in that stretch section and pushing handle telescopic control mechanism, the base including base pitch (11), at least one section Section (11) for connect with the revolving support (2) of engineering machinery, at least one section stretch save telescopically with the base pitch (11) It connects, the pushing handle telescopic control mechanism stretches for controlling at least one section and stretching to save relative to the base pitch (11).

2. turntable (1) according to claim 1, which is characterized in that the pushing handle telescopic control mechanism include oil cylinder combined mechanism, At least one of rope mechanism and oil cylinder bolt mechanism.

3. turntable (1) according to claim 2, which is characterized in that the oil cylinder combined mechanism includes telescopic oil cylinder, described Telescopic oil cylinder is single-stage telescopic oil cylinder or multi-stage expansion oil cylinder.

4. turntable (1) according to claim 3, which is characterized in that the turntable (1) includes stretching section described at least two sections, The oil cylinder combined mechanism includes at least two telescopic oil cylinders being sequentially arranged along the stretching direction for stretching section, and it is described extremely Few two telescopic oil cylinders stretch to control at least two section and stretch to save and stretch successively successively.

5. turntable (1) according to claim 4, which is characterized in that at least two telescopic oil cylinder and described at least two Section stretches that joint number amount is identical and be arranged in a one-to-one correspondence, and each telescopic oil cylinder includes being set along the telescopic direction for stretching section is opposite The first structure and the second structure of simultaneously energy relative telescopic are set, wherein：Along the stretching direction for stretching section, it is located at the institute of most upstream The first structure for stating telescopic oil cylinder is connect with the base pitch (11) so that this is located at the second knot of the telescopic oil cylinder of most upstream Structure can be flexible relative to the base pitch (11)；The second structure positioned at the telescopic oil cylinder of most downstream described is stretched with corresponding Section can connect to synchronization telescope；And in addition to the telescopic oil cylinder positioned at most downstream, the of remaining each telescopic oil cylinder The first structure of the two structures telescopic oil cylinder adjacent with respective downstream can connect to synchronization telescope to form bigeminy structure, respectively A bigeminy structure with itself included by the second structure corresponding described stretch section and can connect to synchronization telescope.

6. turntable (1) according to claim 5, which is characterized in that first included by least one bigeminy structure The second structure included by structure and the bigeminy structure itself it is corresponding it is described stretch section and can connect to synchronization telescope, and/or, at least The second structure included by the second structure and the bigeminy structure itself included by one bigeminy structure is corresponding described to stretch Section can connect to synchronization telescope.

7. turntable (1) according to claim 5, which is characterized in that at least one bigeminy structure corresponding adjacent two A telescopic oil cylinder arranges in the same direction, and/or, the corresponding two neighboring telescopic oil cylinder of at least one bigeminy structure is anti- To arrangement.

8. turntable (1) according to claim 5, which is characterized in that along the stretching direction for stretching section, be located at most upstream The telescopic oil cylinder first structure and the base pitch (11) it is hinged, be located at the second structure of the telescopic oil cylinder of most downstream It is hinged with the corresponding section of stretching, and in addition to the telescopic oil cylinder positioned at most downstream, remaining each telescopic oil cylinder The first structure of the second structure telescopic oil cylinder adjacent with respective downstream is fixedly connected to form the bigeminy structure, each The bigeminy structure with itself included by the second structure corresponding described to stretch section hinged.

9. a kind of engineering machinery, including revolving support (2), which is characterized in that the engineering machinery further includes such as claim 1-8 Any turntable (1).

10. engineering machinery according to claim 9, which is characterized in that the engineering machinery is shotcrete vehicle.