CN216918409U - Crane rotary table auxiliary supporting mechanism and crane - Google Patents

Abstract

The utility model provides an auxiliary supporting mechanism for a rotary table of a crane and the crane, and relates to the technical field of cranes, wherein the auxiliary supporting mechanism for the rotary table of the crane comprises a connecting piece and a first telescopic piece; the lower end of the first telescopic piece is hinged with a chassis of the crane, and the first telescopic piece is used for supporting a rotary table of the crane; one end of the connecting piece is connected with the first telescopic piece, and the other end of the connecting piece is used for being connected with the chassis. When the rotary table needs to be disassembled and assembled, the first telescopic piece supports the rotary table, and the connecting piece ensures that the pose of the first telescopic piece relative to the chassis is stable, so that the rotary table is reliably supported, the position of the rotary table relative to the chassis cannot be changed due to the problems of unstable gravity center and the like in the disassembling and assembling process of the rotary table, the disassembling and assembling difficulty of the rotary table can be reduced, and the disassembling and assembling efficiency of the rotary table is improved; and, first extensible member rotates to being close to the chassis for the chassis and can avoid causing the interference to the rotation of revolving stage, and the reliability is high.

Description

Crane rotary table auxiliary supporting mechanism and crane

Technical Field

The utility model relates to the technical field of cranes, in particular to an auxiliary supporting mechanism for a turntable of a crane and the crane.

Background

The crane is widely applied to engineering hoisting operation, and comprises a chassis, a slewing bearing and a rotary table, wherein the slewing bearing is connected with the chassis, one end of the rotary table is connected with the slewing bearing, and the other end of the rotary table can be of a cantilever structure and used for installing components such as a balance weight.

Along with the increase of the lifting tonnage, the size of a rotary table of the crane is also larger and larger, and the rotary table is easy to overturn due to unstable gravity center caused by a cantilever structure in the disassembly and assembly process. Particularly, with the development of a low-wind-speed wind field, a fan is heavier and heavier, the section of a rotary table of the crane is increased and is higher than the vehicle height specified by the state, and in the case, the rotary table needs to be disassembled and assembled when the crane is transported for a long distance, and the disassembly and assembly of the rotary table are particularly difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of low rotary table dismounting efficiency caused by unstable rotary table gravity center of a crane in the related technology to a certain extent.

In order to solve at least one of the above problems to at least a certain extent, the utility model provides, in a first aspect, an auxiliary supporting mechanism for a turntable of a crane, comprising a connecting member and a first telescopic member; the lower end of the first telescopic piece is hinged with a chassis of the crane, and the first telescopic piece is used for supporting a rotary table of the crane; one end of the connecting piece is connected with the first telescopic piece, and the other end of the connecting piece is used for being connected with the chassis.

Optionally, the connecting member includes a second telescopic member, one end of the second telescopic member is hinged to the first telescopic member, and the other end of the second telescopic member is used for being hinged to the chassis.

Optionally, the auxiliary supporting mechanism for the crane turntable further comprises a supporting member, an upper end of the supporting member is connected with the first telescopic member, and a lower end of the supporting member is used for contacting with the chassis.

Optionally, the first telescopic element is in abutting fit with one end of the turntable away from the slewing bearing of the crane.

Optionally, the auxiliary supporting mechanism for the crane turntable further comprises a pressure detection device, and the pressure detection device is arranged on the first telescopic piece.

Optionally, the number of the first telescopic pieces is at least two, and the at least two first telescopic pieces are sequentially distributed along the width direction of the chassis.

Optionally, the auxiliary supporting mechanism for the crane turntable further comprises a connecting frame, and the connecting frame is connected with at least two first telescopic pieces respectively.

Optionally, the crane turntable auxiliary supporting mechanism further comprises a limiting seat, the limiting seat is used for being arranged on the turntable, the first telescopic piece comprises a limiting block located close to one end of the turntable, and the limiting seat is matched with the limiting block in an inserted manner.

Optionally, the first telescopic part further comprises a first telescopic cylinder and a limiting part, the lower end of the first telescopic cylinder is used for being hinged to the chassis, and the upper end of the first telescopic cylinder is hinged to the limiting part; the limiting part is connected with the first telescopic cylinder and is abutted against the limiting block, or the limiting part is connected with the limiting block and is abutted against the first telescopic cylinder.

The auxiliary supporting mechanism for the rotary table of the crane has the following advantages:

according to the auxiliary supporting mechanism for the rotary table of the crane, when the rotary table needs to be disassembled and assembled, the rotary table is supported through the first telescopic piece, the stable pose of the first telescopic piece relative to the chassis is ensured through the connecting piece, so that the rotary table is reliably supported, the position of the rotary table relative to the chassis cannot be changed due to the unstable gravity center and other problems in the disassembling and assembling process of the rotary table, the disassembling and assembling difficulty of the rotary table can be reduced, compared with a suspension mode, the supporting stability and reliability of the rotary table are high, and the disassembling and assembling efficiency of the rotary table can be improved. In addition, when the crane makes a short-distance transition, the cantilever structure of the rotary table can be supported through the auxiliary supporting mechanism of the rotary table of the crane, the cantilever structure of the rotary table is prevented from swinging up and down due to jolting, so that the safety and the stability of the crane are improved, the rotary motion of the rotary table can be limited to a certain extent at the moment, and the rotary position of the rotary table relative to the chassis is not limited by an additional bolt structure. And, first extensible member lower extreme and chassis articulated mode of setting up make it rotate to being close to the chassis and can avoid causing the interference to the rotation of revolving stage for the chassis, can reduce occupation space to a degree, can also reduce the flexible stroke requirement to first extensible member.

In a second aspect, the utility model further provides a crane, which includes a chassis, a turntable, and the crane turntable auxiliary supporting mechanism as described in any one of the above first aspects, and the crane turntable auxiliary supporting mechanism is disposed between the chassis and the turntable.

The crane has all the advantages of the auxiliary supporting mechanism of the rotary table, and the detailed description is omitted.

Drawings

FIG. 1 is a front view of a turntable auxiliary support mechanism in an embodiment of the present invention;

fig. 2 is a side view of an auxiliary support mechanism of a turntable in an embodiment of the present invention;

FIG. 3 is an enlarged partial view taken at I of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of an embodiment of the present invention illustrating a working condition of the first extendable member;

FIG. 5 is a schematic view of the first telescoping member in a collapsed state according to an embodiment of the present invention.

Description of reference numerals:

1-connecting piece, 11-second telescopic piece, 2-first telescopic piece, 21-first telescopic cylinder, 22-limiting piece, 3-supporting piece, 4-base plate, 41-first connecting seat, 42-second connecting seat, 5-rotary table, 6-connecting frame, 7-limiting seat, 71-first positioning groove, 711-groove body, 712-first convex column, 8-limiting piece, 81-first positioning column, 811-column body, 812-first groove and 9-slewing bearing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the terms "an embodiment," "one embodiment," "some embodiments," "exemplary" and "one embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

In the drawings, the Z-axis represents the vertical, i.e., up-down position, and the positive direction of the Z-axis (i.e., the arrow direction of the Z-axis) represents up and the negative direction of the Z-axis represents down; in the drawings, the X-axis represents the horizontal direction and is designated as the left-right position, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) represents the right side and the negative direction of the X-axis represents the left side; in the drawings, the Y-axis indicates the front-rear position, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) indicates the front side, and the negative direction of the Y-axis indicates the rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

As shown in fig. 1 to 5, an embodiment of the utility model provides an auxiliary supporting mechanism for a turntable of a crane, which comprises a connecting member 1 and a first telescopic member 2; the lower end of the first telescopic part 2 is hinged with a chassis 4 of the crane, and the first telescopic part 2 is used for supporting a rotary table 5 of the crane; one end of the connecting piece 1 is connected with the first telescopic piece 2, and the other end of the connecting piece 1 is used for being connected with the chassis 4.

Illustratively, the turntable 5 and the slewing bearing 9 of the crane are connected through a plurality of horizontal pins (the axes are located in the horizontal plane), the number of the pins can be designed according to specific requirements, for example, eighty pins are uniformly arranged along the circumferential direction of the slewing bearing 9, in this case, the pins are extremely difficult to assemble and disassemble during the assembly and disassembly of the turntable 5, and the stable position of the turntable 5 relative to the chassis 4 can help to quickly realize the assembly and disassembly of the pins.

As shown in fig. 4, for example, when the upper end of the first telescopic member 2 contacts the rotary table 5, the first telescopic member 2 is disposed at a first angle relative to the horizontal plane, the first angle is 90 ° (hereinafter, this state is referred to as a working state of the first telescopic member 2), and at this time, the supporting force for the rotary table 5 can be adjusted by adjusting the telescopic stroke of the first telescopic member 2, so as to stably support the rotary table 5 of the crane.

It should be noted that, the lower end of the first extensible member 2 is used for being hinged to the chassis 4 of the crane, and may be a pin shaft hole formed in the chassis body of the chassis 4, and the lower end of the first extensible member 2 is provided with another pin shaft hole corresponding to the pin shaft hole, so that the pin shaft is inserted into the pin shaft hole to realize the hinging of the two. As shown in fig. 1, it may also be that a first connecting seat 41 is disposed on the chassis body, the first connecting seat 41 is hinged to the lower end of the first telescopic element 2 through a first pin, and an axial direction of the first pin is identical to the X-axis direction (i.e., the left-right direction), and the following description will describe the content of the present invention by taking the case of disposing the first connecting seat 41 as an example.

Illustratively, the link 1 is connected to the first telescoping member 2 and the chassis 4, respectively, and is configured to be removably connected to at least one of the first telescoping member 2 and the chassis 4. For example, the connecting member 1 includes a connecting rod, two ends of the connecting rod are detachably connected with the first telescopic member 2 and the chassis 4 through bolts and the like, when the first telescopic member 2 is in a working state, the connecting rod is in a state of being connected with the first telescopic member 2 and the chassis 4, the connecting rod is inclined relative to the first telescopic member 2, the connecting rod limits the rotation of the first telescopic member 2 relative to the chassis 4, and the first telescopic member 2 is ensured to stably support the turntable 5; when the link is in a detached state from the first telescopic member 2 and/or the chassis 4, respectively, the first telescopic member 2 can be turned relative to the chassis 4 and brought close to the chassis 4, so that the first telescopic member 2 is in a folded state.

The connecting member 1 may further be configured to include a limiting pin, the limiting pin is disposed through a corresponding limiting hole on the first extensible member 2 and the chassis 4, so as to limit the rotation between the first extensible member 2 and the chassis 4, which will not be described in detail herein.

According to the auxiliary supporting mechanism for the crane turntable, when the turntable 5 needs to be disassembled and assembled, the first telescopic piece 2 is used for supporting the turntable 5, the stable posture of the first telescopic piece 2 relative to the chassis 4 is ensured through the connecting piece 1, so that the turntable 5 is reliably supported, the position of the turntable 5 relative to the chassis 4 cannot be changed due to the unstable gravity center and other problems of the turntable 5 in the disassembling and assembling process, the disassembling and assembling difficulty of the turntable 5 can be reduced, compared with a suspension mode, the supporting stability and reliability of the turntable 5 are high, and the disassembling and assembling efficiency of the turntable 5 can be improved. In addition, when the crane makes a short-distance transition, the cantilever structure of the rotary table 5 can be supported through the auxiliary supporting mechanism of the rotary table of the crane, the cantilever structure of the rotary table 5 is prevented from swinging up and down due to bumping, so that the safety and the stability of the crane are improved, at the moment, the rotary motion of the rotary table 5 can be limited to a certain extent, and the rotary position of the rotary table 5 relative to the chassis 4 is not limited by an additional bolt structure. Moreover, the lower end of the first telescopic part 2 is hinged to the chassis 4 in a mode that the lower end of the first telescopic part is hinged to the chassis 4, so that the interference on the rotation of the rotary table 5 can be avoided when the lower end of the first telescopic part rotates to be close to the chassis 4, the occupied space can be reduced to a certain extent, and the requirement on the telescopic stroke of the first telescopic part 2 can be reduced.

Taking the first telescopic member 2 including the first telescopic cylinder 21 as an example, the first telescopic cylinder 21 is a hydraulic cylinder, in order to provide sufficient supporting force, the cylinder diameter of the hydraulic cylinder is generally large, the larger the telescopic stroke is, the higher the cost is, and when the first telescopic member 2 is foldable, the stroke requirement of the first telescopic cylinder 21 is relatively small, and the cost is relatively low.

In an embodiment of the utility model, as shown in fig. 1, the connecting member 1 comprises a second telescopic member 11, one end of the second telescopic member 11 is hinged to the first telescopic member 2, and the other end of the second telescopic member 11 is used for being hinged to the chassis 4. Similar to the first connecting seat 41, a second connecting seat 42 may be disposed on the chassis body, and the lower end of the second expansion piece 11 is hinged to the second connecting seat 42.

So, the telescopic motion through second extensible member 11 drives first extensible member 2 and rotates for chassis 4, is convenient for realize the gesture conversion of first extensible member 2, and controllability and stability are high.

As shown in fig. 1, optionally, the auxiliary supporting mechanism of the crane turntable further comprises a supporting member 3, an upper end of the supporting member 3 is connected with the first telescopic member 2, and a lower end of the supporting member 3 is used for contacting with the chassis 4.

Illustratively, the supporting member 3 includes a straight rod disposed obliquely, when the second telescopic cylinder performs an extending motion, the first telescopic member 2 is driven to rotate relative to the first connecting seat 41 around a first pin, and when the lower end of the supporting member 3 abuts against the chassis 4, the position of the first telescopic member 2 is located. When the first telescopic member 2 is provided, the lower end of the support member 3 is located on the side of the first telescopic member 2 remote from the second telescopic member 11.

Further, the position of the supporting member 3 relative to the first telescopic member 2 may also be adjustable through an adjusting structure, for example, the length and/or the inclination angle of the portion exposed out of the first telescopic member 2 may be adjustable, so as to adjust the position of the supporting member 3 relative to the first telescopic member 2 according to requirements.

Therefore, when the first telescopic part 2 rotates relative to the chassis 4 until the lower end of the support part 3 is abutted against the chassis 4, the support part 3 can limit the rotating position of the first telescopic part 2 relative to the chassis 4, so that the position positioning is realized, and the consistency during repeated dismounting operation is ensured; furthermore, it is also possible to form the support for the first telescopic element 2 to a certain extent, for example with the support 3 and the second telescopic element 11 forming the support for the first telescopic element 2 in different directions.

As shown in fig. 4, the first telescopic member 2 is adapted to be in abutting engagement with an end of the turntable 5 remote from the slewing bearing 9 of the crane.

Illustratively, the first telescopic element 2 is intended to be arranged at the rear end of the chassis 4, which may be understood as the end of the crane remote from the cab, and is intended to abut against the end of the turntable 5 remote from the slewing bearing 9.

Therefore, the first telescopic part 2 can support the rotary table 5 at a position far away from the slewing bearing 9, and the stress stability and reliability of the rotary table 5 are high.

Optionally, the auxiliary supporting mechanism for the turntable of the crane further comprises a pressure detection device, and the pressure detection device is arranged on the first telescopic member 2. To detect the pressure to which the corresponding first telescopic element 2 is subjected.

Illustratively, the pressure detection device is arranged on the top of the first telescopic member 2, and the pressure detection device comprises a pressure sensor with a digital display function, it should be noted that when the structure of the rotary table 5 is determined, the weight thereof is determined, and when the rotary table is stably supported on the slewing bearing, the pressure caused to the first telescopic member 2 should be within a certain range.

So, counter weight pressure measurement device is convenient for learn the condition that first extensible member 2 supported 5 revolving stages through pressure measurement device's detection numerical value, is convenient for adjust the extension of first extensible member 2 and shorten in a flexible way according to pressure measurement device's detection numerical value.

Further, the number of the first telescopic parts 2 is set to be at least two, and the at least two first telescopic parts 2 are sequentially distributed along the width direction of the chassis 4.

The width direction coincides with the X-axis direction in the drawing, that is, coincides with the crane width direction. The two first telescopic members 2 may be oppositely arranged with respect to a first plane of symmetry of the chassis 4, which is parallel to the YZ-plane and passes through the centre line of revolution of the turntable 5.

So, when this at least two first extensible member 2 realized jointly the support to revolving stage 5, can avoid revolving stage 5 to a certain extent to one side slope in the width direction of chassis 4, for supporting through single first extensible member 2, revolving stage 5 can obtain more stable support.

At this time, the at least two first extensible members 2 may be each provided with a pressure detection device.

When first extensible member 2 is in operating condition, the top contact revolving stage 5 of first extensible member 2, the stationary degree of revolving stage 5 is judged to a certain extent through two at least pressure sensor's detection numerical value. For example, when two pressure sensors at the first telescopic member 2 distributed along the width direction of the chassis 4 respectively detect two pressure values, a difference value is calculated, and if the difference value is within an allowable safety value range, it is determined that the turntable 5 is in a relatively stable state at the time. The specific values and strategies should be determined based on the specific structure and experimental data. Illustratively, in an ideal state, the ground is a plane, and when the two pressure sensors detect the same, the extension and retraction strokes of the two first extension and retraction cylinders 21 are the same, and the force applied to the turntable 5 is relatively stable.

So, detect the pressure numerical value that first extensible member 2 received through pressure measurement, can judge the stationarity of revolving stage 5 to a certain extent through two pressure measurement's detection data, be convenient for adjust the flexible stroke of each first extensible member 2 according to this pressure numerical value to support revolving stage 5 more stably.

The auxiliary supporting mechanism for the rotary table of the crane further comprises a controller, wherein the controller is in communication connection with each first telescopic piece 2, and the controller can also be in communication connection with each pressure detection device and each second telescopic piece 11.

In this way, the controller can perform auxiliary control on each first extensible member 2 according to the data of each pressure detection device, so as to reduce the workload of the operator, for example, the controller can adjust the extension and retraction of each first extensible member 2, so that each pressure detection device reaches a preset range, and then manually confirm or perform fine adjustment.

In the above embodiment, the auxiliary supporting mechanism for the turntable of the crane further includes connecting frames 6, and the connecting frames 6 are respectively connected with the at least two first telescopic members 2.

Illustratively, as shown in fig. 2, the connecting frame 6 is connected to the cylinder bodies of the two first telescopic cylinders 21, and in this case, the second telescopic cylinder may be hinged to the connecting frame 6 or the cylinder body of the first telescopic cylinder 21, which is not limited. When the second telescopic cylinder is connected with the connecting frame 6, the connecting frame 6 can be regarded as a push plate connected with the free end of the telescopic rod of the second telescopic cylinder, and the push plate is connected with the cylinder body of the second telescopic cylinder.

In this way, the plurality of first telescopic parts 2 can help to support the rotary table 5 at each position, and the connecting frame 6 is arranged to ensure that the rotary motion of each first telescopic part 2 relative to the chassis 4 is consistent and reliable.

Furthermore, the auxiliary supporting mechanism for the rotary table of the crane further comprises a limiting seat 7, the limiting seat 7 is used for being arranged on the rotary table 5, the first telescopic piece 2 comprises a limiting block 8, and the upper end of the first telescopic cylinder 21 is connected with the limiting block 8; the limiting seat 7 is matched with the limiting block 8 in an inserting way.

As shown in fig. 1, 2 and 3, the limiting seat 7 may be detachably connected or integrally connected with the turntable body of the turntable 5, which is not limited. Spacing seat 7 and stopper 8 include first positioning groove 71 and first locating column 81 respectively, specifically, this description will use first positioning groove 71 to set up in spacing seat 7, and first locating column 81 sets up and explains in stopper 8 as an example, but, it also can be, first positioning groove 71 sets up in stopper 8, and first locating column 81 sets up in spacing seat 7.

Illustratively, when the first telescopic cylinder 21 rotates around the first pin shaft so that the first positioning column 81 is aligned with the first positioning groove 71, the first telescopic cylinder 21 performs an extending motion, the first positioning column 81 is inserted into the first positioning groove 71, and the side wall of the first positioning groove 71 can limit the rotation of the turntable 5 relative to the chassis 4 to a certain extent.

In this way, the turntable 5 can be positioned with the chassis 4 with high consistency when repeatedly attached and detached, and the turntable 5 can be restricted from rotating with respect to the chassis 4 to some extent.

As shown in fig. 3, further, the first positioning slot 71 includes a slot body 711 and a first protruding column 712 disposed at the bottom of the slot body 711, the first positioning column 81 includes a column body 811 and a first groove 812 disposed at the column body 811, a height of the first protruding column 712 is smaller than a depth of the slot body 711, and the first protruding column 712 and the first groove 812 are in insertion fit.

As shown in fig. 2 and 3, the first positioning groove 71 is a C-shaped groove, the length direction of the C-shaped groove structure is the same as the Y-axis direction (i.e., the front-back direction), and when the first telescopic cylinder 21 rotates around the first pin relative to the first connecting base 41, the first positioning column 81 enters or leaves the C-shaped groove from one end of the C-shaped groove in the length direction. In this case, the need for the extension/contraction stroke of the first telescopic cylinder 21 can be further reduced, or the need for the installation space of the first telescopic member 2 can be reduced.

At this time, the first protruding pillar 712 or the first positioning pillar 81 may be made of rubber, nylon, or other materials. The nylon has good wear resistance, self-lubricating property and strong toughness. The problems that the positioning is difficult and the service life is reduced due to position errors when the first positioning column 81 and the first convex column 712 are inserted to a certain extent can be solved. The function can be realized to a certain extent by utilizing the elastic property of the rubber, for example, the rubber can be metal rubber, and has better elasticity and higher fatigue resistance. In addition, the nylon or the rubber has strong absorption capacity to impact and stress vibration and also has impact resistance, so that the service life of the first contact part and/or the second contact part is prolonged to a certain extent.

So, realize spacing seat 7 and stopper 8's relative position through groove body 711 and post body 811's relative position and just fix a position, realized spacing seat 7 and stopper 8's relative position's accurate positioning through first projection 712 and first recess 812 grafting cooperation, and realize the motion direction to stopper 8, realized the relative position location of revolving stage 5 and chassis 4, simultaneously, its grafting cooperation can also rotate spacing to revolving stage 5 to a certain extent.

Further, the first telescopic member 2 further includes a limiting member 22, the first telescopic cylinder 21 is hinged to the limiting member 8 (for example, the axis direction of the hinged shaft is the same as the X-axis direction), the limiting member 22 is in threaded connection with the first telescopic cylinder 21 and is abutted to the limiting member 8, or the limiting member 22 is in threaded connection with the limiting member 8 and is abutted to the first telescopic cylinder 21.

Illustratively, the limiting member 22 includes two limiting plates (not shown in the drawings), which are disposed on the left and right sides of the limiting member 8, and are disposed obliquely with respect to the first telescopic cylinder 21. At this time, the position of the limiting block 8 relative to the rotation of the first telescopic cylinder 21 is limited by the abutting of the limiting block and the telescopic rod of the first telescopic cylinder 21, and the position of the limiting block can be adjusted relative to the limiting block 8; alternatively, each of the limiting plates is connected with an adjusting screw, and the rotation range of the limiting block 8 relative to the first telescopic cylinder 21 is limited by the position of the adjusting screw relative to the limiting plate.

Exemplarily, as shown in fig. 1, the limiting member 22 includes a bolt assembly, the bolt assembly includes a bolt and a nut connected to the bolt, the bolt is in threaded connection with a threaded hole provided on the limiting member 8 and is used for abutting against the telescopic rod of the first telescopic cylinder 21, the nut is located between the limiting member and the bolt head and is used for abutting against the limiting member 8, and after the bolt assembly is tightened, the relative position between the limiting member 8 and the telescopic rod of the first telescopic cylinder 21 is fixed. Similar to the limiting plate, two bolt assemblies may be provided, which is not a limitation.

Therefore, the hinged arrangement mode is convenient for the limiting block 8 to adapt to the pose difference of the rotary table 5 and can adapt to the pose change (very small inclination angle change) of the rotary table 5 in the extension movement process of the first telescopic cylinder 21 to a certain extent, and before the position positioning is realized, the limiting block 22 is adjusted, so that the limiting block 8 can move in a certain range relative to the first telescopic cylinder 21, and the position error between the limiting seat 7 and the limiting block 8 can be adjusted in a certain range; after the limiting seat 7 and the limiting block 8 are positioned, the limiting block 22 is adjusted as required to lock the relative position of the limiting block 8 and the first telescopic cylinder 21, so that the limiting block 8 and the first telescopic cylinder 21 are prevented from rotating relatively in the supporting process, and the stability of the turntable 5 is prevented from being influenced.

As shown in fig. 4 and 5, another aspect of the present invention further provides a crane, including a chassis 4, a turntable 5, and a crane turntable auxiliary supporting mechanism as described above, where the crane turntable auxiliary supporting mechanism is disposed between the chassis 4 and the turntable 5.

The crane has all the advantages of the auxiliary supporting mechanism of the crane rotary table, and the detailed description is omitted here.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (10)

1. An auxiliary supporting mechanism of a rotary table of a crane is characterized by comprising a connecting piece (1) and a first telescopic piece (2); the lower end of the first telescopic part (2) is hinged with a chassis (4) of the crane, and the first telescopic part (2) is used for supporting a rotary table (5) of the crane; one end of the connecting piece (1) is connected with the first telescopic piece (2), and the other end of the connecting piece (1) is used for being connected with the chassis (4).

2. Crane turret auxiliary support mechanism according to claim 1, wherein said connection member (1) comprises a second telescopic member (11), one end of said second telescopic member (11) being hinged to said first telescopic member (2) and the other end of said second telescopic member (11) being intended to be hinged to said chassis (4).

3. Crane turret auxiliary support mechanism according to claim 1, further comprising a support (3), the upper end of the support (3) being connected to the first telescopic member (2), the lower end of the support (3) being intended to be in contact with the chassis (4).

4. Crane turret auxiliary support mechanism according to claim 1, wherein the first telescopic member (2) is adapted to be in abutting engagement with an end of the turret (5) remote from a slewing bearing (9) of the crane.

5. The auxiliary support mechanism for a turntable of a crane according to any one of claims 1 to 4, further comprising a pressure detection device provided to the first telescopic member (2).

6. Crane turret auxiliary support according to any of claims 1 to 4, wherein the number of first telescopic elements (2) is at least two, at least two first telescopic elements (2) being distributed in sequence along the width direction of the chassis (4).

7. Crane turret auxiliary support according to claim 6, further comprising a connection frame (6), said connection frame (6) being connected to at least two of said first telescopic elements (2), respectively.

8. The auxiliary supporting mechanism for the rotating platform of the crane according to any one of claims 1 to 4, further comprising a limiting seat (7), wherein the limiting seat (7) is used for being arranged on the rotating platform (5), the first telescopic member (2) comprises a limiting block (8) which is arranged at one end close to the rotating platform (5), and the limiting seat (7) and the limiting block (8) are in inserted fit.

9. The auxiliary supporting mechanism for the crane turntable according to claim 8, wherein the first telescopic member (2) further comprises a first telescopic cylinder (21) and a limiting member (22), the lower end of the first telescopic cylinder (21) is hinged to the chassis (4), and the upper end of the first telescopic cylinder (21) is hinged to the limiting member (8); the limiting part (22) is connected with the first telescopic cylinder (21) and is abutted against the limiting part (8), or the limiting part (22) is connected with the limiting part (8) and is abutted against the first telescopic cylinder (21).

10. A crane, comprising a chassis (4), a turntable (5) and a crane turntable auxiliary support mechanism as claimed in any one of claims 1 to 9, which is arranged between the chassis (4) and the turntable (5).

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