CN116199138A - Pipe crane - Google Patents

Abstract

The present disclosure relates to a pipe crane, comprising: a chassis (1); the arm support (2) is arranged on the first side of the chassis (1) along the left-right direction (x), the arm support (2) comprises two longitudinal beams (21), and the two longitudinal beams (21) are arranged at intervals along the front-back direction (y) of the chassis (1); the first adjusting component (7) is arranged on a first side of the chassis (1) along the left-right direction (x) and is used for adjusting the angle of the arm support (2) in the vertical plane where the front-back direction (y) is located; a counterweight assembly (4) provided on a second side of the chassis (1) in the left-right direction (x); and a second adjusting assembly (9) provided on a second side of the chassis (1) in the left-right direction (x) for adjusting an angle of the counterweight assembly (4) in a vertical plane in which the front-rear direction (y) is located.

Description

Pipe crane

Technical Field

The disclosure relates to the technical field of engineering machinery, in particular to a pipe crane.

Background

The construction speed of the long conveying pipeline is obviously increased, the fifth construction peak of the long conveying pipeline is met, and the pipeline mechanical requirement is greatly pulled. The pipe network engineering mileage is thousands kilometers or even thousands kilometers, spans multiple provinces, is complex and changeable along the construction environment, has plains, mountainous areas, deserts, hills, marshes and snowlands, is difficult for conventional equipment to meet various environmental requirements, pipeline construction faces various severe environments, the construction of a mountain large slope is difficult, the slope lifting arm frame is easily damaged due to large side load, and meanwhile, a host machine is easily instable due to large torque, so that great challenges are presented to us, meanwhile, development opportunities of the industry are led, key core technologies are broken through, the technical problem of mountain lifting pipes is solved, and the pipe network engineering is imperative.

Disclosure of Invention

The disclosure provides a pipe crane, which can improve the safety of construction on a mountain slope.

The present disclosure provides a pipe crane, comprising:

a chassis;

the arm support is arranged at a first side of the chassis along the left-right direction and comprises two longitudinal beams which are arranged at intervals along the front-back direction of the chassis;

the first adjusting component is arranged at a first side of the chassis along the left-right direction and is used for adjusting the angle of the arm support in the vertical plane where the front-back direction is located;

the balancing weight assembly is arranged on the second side of the chassis along the left-right direction; and

and the second adjusting assembly is arranged on the second side of the chassis along the left-right direction and is used for adjusting the angle of the balancing weight assembly in the vertical plane where the front-back direction is located.

In some embodiments, the pipe crane further comprises an amplitude variation mechanism for amplitude variation of the arm support, and the second adjusting assembly is used for adjusting the angle of the amplitude variation mechanism in a vertical plane in the front-rear direction.

In some embodiments, the first adjustment assembly and the second adjustment assembly each comprise:

the fixing frame comprises a first mounting plate and a tripod, the first mounting plate is fixed on the chassis, and the tripod is fixed above the first mounting plate;

the movable frame is rotatably arranged at the top of the tripod through a first hinge shaft in the middle area along the front-back direction, and the first hinge shaft extends along the left-right direction; and

The two first linear driving parts are respectively positioned at two sides of the tripod along the front-back direction, and two ends of each first linear driving part are respectively hinged with the fixed frame and the movable frame.

In some embodiments, the counterweight assembly is mounted on a movable frame.

In some embodiments, the tube crane further comprises a first bracket mounted on the movable frame, the counterweight assembly being mounted on the movable frame by the first bracket.

In some embodiments, the balancing weight assembly includes two balancing weights, one side of the balancing weights is provided with a first ear plate group, and both sides of the first bracket in the front-rear direction are provided with a second ear plate group, and the second ear plate group is connected with the first ear plate group so as to mount the balancing weights on the first bracket.

In some embodiments, the first ear plate group includes a plurality of first ear plates disposed at intervals along the height direction, and the second ear plate group includes a plurality of second ear plates disposed at intervals along the height direction, and the plurality of first ear plates are connected in one-to-one correspondence with the plurality of second ear plates.

In some embodiments, the second set of earplates is rotatably connected to the first set of earplates in a plane perpendicular to the height direction.

In some embodiments, the middle area of the top of the first bracket along the front-back direction is provided with two first hinging seats, the top of the balancing weight is provided with a second hinging seat, the pipe crane further comprises two second linear driving components, and two ends of each second linear driving component are respectively connected with the first hinging seat and the second hinging seat and are used for driving the balancing weight to rotate.

In some embodiments, the pipe crane further comprises an amplitude variation mechanism for amplitude variation of the arm support, the amplitude variation mechanism and the counterweight assembly are all installed on the same movable frame, and an installation area of the amplitude variation mechanism is located on the inner side of an installation area of the counterweight assembly in the left-right direction.

In some embodiments, the pipe crane further comprises an amplitude variation mechanism for amplitude variation of the boom, the amplitude variation mechanism comprises a third linear driving component and a third hinge base, the third hinge base is mounted on the movable frame, the center line of the third linear driving component is located in the center plane of the boom, the first end of the third linear driving component is connected with the third hinge base, and the second end of the third linear driving component is connected with the boom.

In some embodiments, the pipe crane further comprises an amplitude variation mechanism for amplitude variation of the arm support, the amplitude variation mechanism comprises a second bracket and a hoisting mechanism, the second bracket is arranged on the movable bracket, the hoisting mechanism is arranged on the second bracket, and the hoisting mechanism drives the arm support to amplitude variation through an amplitude variation steel wire rope.

In some embodiments, the bottoms of the two stringers are respectively hinged to two ends of the movable frame in the front-rear direction, and the hinge shaft is disposed in the front-rear direction.

In some embodiments, the chassis comprises: the crawler belt frame is respectively connected to two sides of the frame along the left-right direction, and the outside of the crawler belt frame is surrounded by crawler belts;

Wherein, first mounting panel is installed in one of them track frame, and is located the position that is close to the outside along left and right directions, and tripod and two first linear drive parts all are located the track outside.

In some embodiments, the outer side of the track frame near the bottom is provided with two extension plates spaced apart in the front-rear direction, and the first mounting plate is fixed to the two extension plates.

In some embodiments, the chassis comprises: the crawler belt frame is respectively connected to two sides of the frame along the left-right direction, and the outside of the crawler belt frame is surrounded by crawler belts;

wherein, first regulation subassembly and second regulation subassembly all still include: the connecting beam and the second mounting plate, the second mounting plate is installed in the side of frame, and the connecting beam is connected between tripod and second mounting plate, and the connecting beam is located the track top.

In some embodiments, the movable frame comprises a mounting beam and a triangle, the mounting beam is connected with the arm frame and the first linear driving component, the middle area of the mounting beam is hinged with the triangle, the connection side surface of the triangle is arranged on the inner side of the mounting beam along the left-right direction, the vertex angle of the triangle opposite to the connection side surface is provided with a shaft, and the shaft extends along the left-right direction and is rotatably arranged on the second mounting plate.

In some embodiments, the pipe crane further comprises a lifting mechanism arranged at the bottom area on the arm support and used for driving the lifting hook to perform lifting operation through the lifting wire rope.

In some embodiments, the first adjustment assembly is configured to adjust the boom to a vertical condition with the pipe hoist on a sloping road, and the second adjustment assembly is configured to adjust the counterweight assembly and the horn to a boom-compatible condition.

In some embodiments, the first adjustment assembly adjusts in synchronization with the second adjustment assembly.

In some embodiments, the boom rotates about a first hinge axis in a vertical plane in the fore-aft direction, the horn and counterweight assembly rotates about a second hinge axis in a vertical plane in the fore-aft direction, the first and second hinge axes each extend in a side-to-side direction, and the centerlines coincide.

In some embodiments, the first and second adjustment assemblies are adjusted in a range of-30 ° to +30° based on a direction perpendicular to the chassis.

According to the pipe crane disclosed by the embodiment of the disclosure, the arm support can be leveled according to the gradient through the first adjusting component, and the technical problem of pipe lifting in a mountain complex environment can be solved. When the leveling machine runs on a slope or performs lifting operation after leveling, the arm support can be prevented from being damaged by side load, instability caused by large torque of the whole machine is prevented, and safety, reliability and stability of lifting of the slope are ensured. In addition, in the process of leveling the arm support, the angle of the balancing weight assembly in the vertical plane where the front and rear directions are located can be adjusted through the second adjusting assembly, so that the gravity center position of the pipe crane during operation on a sloping road can be adjusted, and the pipe crane can be kept in a stable state in cooperation with the leveling of the arm support.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural view of a first embodiment of a pipe hoist according to the present disclosure at a first perspective.

Fig. 2 is a schematic structural view of a first embodiment of a pipe hoist according to the present disclosure at a second perspective.

Fig. 3 is a schematic structural view of a first embodiment of a pipe crane according to the present disclosure at a third perspective.

Fig. 4 is a schematic structural view of a second embodiment of the pipe hoist of the present disclosure.

Fig. 5 is a schematic view of the chassis at a first view angle.

Fig. 6 is a schematic view of the chassis at a second viewing angle.

Fig. 7 is a schematic view of the chassis at a third view angle.

Fig. 8 is a schematic structural view of some embodiments of a chassis.

Fig. 9 is a schematic top structure of the first bracket mounted on the movable frame.

Fig. 10 is a schematic view of the bottom structure of the first bracket mounted on the movable frame.

Fig. 11 is a schematic view of the structure of the counterweight.

Fig. 12 is a schematic top view of the movable frame.

Fig. 13 is a schematic view of the bottom structure of the movable frame.

Fig. 14 is a schematic view of a first view of a pipe hoist of the present disclosure in a leveled state on a sloping road.

Fig. 15 is a schematic view of a second view of the pipe hoist of the present disclosure in a leveled state on a sloping road.

Fig. 16 is a side view of a pipe hoist of the present disclosure in a leveled state on a sloping road.

Fig. 17 is a schematic view of two counterweights in the tube crane of the present disclosure in a retracted state.

Description of the reference numerals

1. A chassis; 11. a frame; 12. a track frame; 121. an extension plate; 13. a track; 14. a cab; 15. an equipment room;

2. arm support; 21. a longitudinal beam; 22. a cross beam;

3. a lifting mechanism;

4. a counterweight assembly; 41. a counterweight; 411. the second hinge seat; 42. a first ear panel set; 42', a first ear panel; 40. a second linear driving member;

5. lifting the steel wire rope; 6. a lifting hook;

7. a first adjustment assembly; 70. a first linear driving part; 71. a first mounting plate; 72. a tripod; 73. a fourth hinge base; 74. a movable frame; 741. mounting a beam; 7411. a first hole; 7412. a U-shaped hinging seat; 7413. a fifth hinge base; 742. a triangle; 743. a third mounting plate; 75. a connecting beam; 75', a second mounting plate; 751. a second hole; 76. a shaft; 77. a nut; A. a first hinge shaft;

8. An amplitude variation mechanism; 81. a third linear driving member; 82. a third hinge base; 821. a side plate; 822. a connection part; 823. ear plates; 824. a fourth hinge base; 83. a second bracket; 84. a hoisting mechanism; 85. a variable amplitude steel wire rope; 86. pulley block;

9. a second adjustment assembly; 10. a first bracket; 101. a first hinge base; 102. a second ear panel set; 102', a second set of ear panels;

A. a first hinge shaft; B. a second hinge shaft;

x, left-right direction; y, front-back direction; z, height direction.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without carrying out the inventive task are within the scope of protection of this disclosure.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

In the description of the present disclosure, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.

As shown in fig. 1-17, the present disclosure provides a pipe hoist, in some embodiments, as shown in fig. 1 and 2, comprising: a chassis 1; the arm support 2 is arranged on a first side of the chassis 1 along the left-right direction x, the arm support 2 comprises two longitudinal beams 21, and the two longitudinal beams 21 are arranged at intervals along the front-back direction y of the chassis 1; the lifting mechanism 3 is arranged on the arm support 2 and is used for lifting the lifting hook 6; the first adjusting component 7 is arranged at a first side of the chassis 1 along the left-right direction x and is used for adjusting the angle of the arm support 2 in the vertical plane where the front-back direction y is located; a counterweight assembly 4 provided on a second side of the chassis 1 in the left-right direction x; and a second adjusting unit 9 provided at a second side of the chassis 1 in the left-right direction x for adjusting an angle of the counterweight assembly 4 in a vertical plane in the front-rear direction y.

As shown in fig. 3, the chassis 1 includes: the crawler belt frame comprises a frame 11 and two crawler belt frames 12, wherein the two crawler belt frames 12 are respectively connected to two sides of the frame 11 along the left-right direction x, and the crawler belt frames 12 are surrounded by crawler belts 13. A cab 14 and an equipment room 15 may be provided above the frame 11 in the front-rear direction, and the equipment room 15 is located in a front region of the frame 11 and the cab 14 is located in a rear region of the frame 11 during running.

The boom 2 is disposed on a first side of the chassis 1 along a left-right direction x, for example, in fig. 1, the boom 2 is disposed on the left side, the boom 2 includes two stringers 21, the two stringers 21 are disposed at intervals along a front-back direction y of the chassis 1, the two stringers 21 may form an a-shape from top to bottom, and the two stringers 21 are connected by a cross beam 22. The first adjusting assembly 7 can enable the arm support 2 to rotate in a vertical plane where the front-rear direction y is located so as to level.

The lifting mechanism 3 is arranged on the arm support 2 and is used for lifting the lifting hook 6, and the lifting operation comprises lifting or lowering a weight through the lifting hook 6. The amplitude changing mechanism 8 is used for changing amplitude of the arm support 2, and the amplitude changing mechanism 8 and the lifting mechanism 3 are independently arranged. Amplitude variation even if the arm support 2 is in the presence and the center plane of the rotating shaft rotates in the center plane. The lifting mechanism 3 and the luffing mechanism 8 can be aligned with the arm support 2 along the front-back direction y.

The balance weight assembly 4 and the arm support 2 are respectively positioned at two sides of the chassis 1 along the left-right direction x, when the arm support 2 carries out hoisting operation, the gravity center of the pipe crane is deviated to one side of the arm support 2, and the stability of the pipe crane operation can be improved by arranging the balance weight assembly 4.

Aiming at the problem that the existing pipe crane lifting arm and lifting amplitude varying mechanism have no leveling technology, the lifting construction problem of a mountain large ramp cannot be solved, the embodiment of the application can be suitable for mountain operation, the arm support 2 can be leveled according to the gradient through the first adjusting component 7, and the technical problem of pipe lifting in a complex mountain environment can be solved. When the leveling is finished and the crane runs on a slope or performs lifting operation, the arm support 2 can be prevented from being damaged by side load, the whole crane is prevented from being instable due to larger torque, and the safety, reliability and stability of the slope lifting are ensured.

In addition, in the process of leveling the arm support 2, the angle of the counterweight assembly 4 in the vertical plane where the front-back direction y is located can be adjusted through the second adjusting assembly 9 so as to adjust the gravity center position of the pipe crane when the pipe crane works on a sloping road, so that the pipe crane is kept in a stable state in cooperation with the leveling of the arm support 2.

In addition, the lifting mechanism 3 is fixed on the arm support 2, and when the angle of the arm support 2 is adjusted in the longitudinal plane where the front-back direction y is located, the lifting mechanism 3 can directly change the angle along with the arm support 2, so that the lifting operation can be ensured to be smoothly carried out.

In some embodiments, the pipe crane further comprises an amplitude variation mechanism 8 for amplitude variation of the boom 2, and a second adjustment assembly 9 is used for adjusting the angle of the amplitude variation mechanism 8 in a vertical plane in the front-rear direction y.

The amplitude changing mechanism 8 is used for changing amplitude of the arm support 2, and the amplitude changing mechanism 8 and the lifting mechanism 3 are independently arranged. The lifting mechanism 3 and the luffing mechanism 8 can be aligned with the arm support 2 along the front-back direction y.

The arm support 2 can rotate in the central plane of the arm support to perform amplitude variation, and when the pipe crane is positioned on a hillside, if the arm support 2 is in a vertical state through leveling, the arm support 2 rotates in the vertical plane where the left-right direction x is positioned to perform amplitude variation; if the boom 2 is still at an angle to the vertical plane after leveling, the rotation plane of the boom 2 is also at an angle to the vertical plane, but the rotation plane is always perpendicular to the chassis 1.

According to the embodiment, the arm support 2 and the amplitude changing mechanism 8 can be leveled according to the gradient, the first adjusting component 7 and the second adjusting component 9 are structurally independent, the structure is simple, the control difficulty is small, the operation is convenient, and the practicability and the economy are high. Moreover, in the process of leveling the amplitude changing mechanism 8 through the second adjusting component 9, the gesture of the counterweight assembly 4 can be adjusted to assist in changing the gravity center position of the pipe crane, so that the stability of the operation of the pipe crane can be further improved, instability caused by large torque of the whole crane is prevented, and the safety, reliability and stability of ramp lifting are ensured.

In some embodiments, as in fig. 1 and 2, the first adjustment assembly 7 and the second adjustment assembly 9 each comprise: the fixed frame comprises a first mounting plate 71 and a tripod 72, wherein the first mounting plate 71 is fixed on the chassis 1, and the tripod 72 is fixed above the first mounting plate 71; a movable frame 74 rotatably mounted on the top of the tripod 72 at a middle region thereof in the front-rear direction y through a first hinge axis a extending in the left-right direction x; and two first linear driving parts 70 respectively located at both sides of the tripod 72 in the front-rear direction y, and both ends of each first linear driving part 70 are hinged with the fixed frame and the movable frame 74, respectively. The bottoms of the two stringers 21 are respectively hinged to two ends of the movable frame 74 along the front-rear direction y, and the hinge shafts are disposed along the front-rear direction y.

The first mounting plate 71 may be fixed to a position of the chassis 1 near the outside in the left-right direction x, and the tripod 72 may be entirely located outside the chassis 1, with the bottom surface of the tripod 72 contacting the first mounting plate 71. The first linear driving members 70 may be electric push rods, hydraulic cylinders, air cylinders, or the like, and the first linear driving members 70 on both sides can realize adjustment of the leveling angle of the movable frame 74 by telescopic engagement.

The first adjusting component 7 and the second adjusting component 9 of this embodiment are simple in structure, high in operational reliability, easy to control, and capable of changing the angle of the movable frame 74 in the vertical plane where the front-rear direction is located, so as to reliably and accurately adjust the rotation angle of the boom 2, the counterweight assembly 4, or the luffing mechanism 8 in the vertical plane where the front-rear direction y is located. Moreover, the first adjusting component 7 and the second adjusting component 9 adopt the same structure and are respectively arranged at the two sides of the chassis 1, so that the pipe crane structure is more symmetrical, and the structure can be simplified.

In some embodiments, as shown in fig. 3 and 4, the counterweight assembly 4 is mounted on a movable frame 74.

In this embodiment, the two first linear driving components 70 are telescopically matched to realize the angle adjustment of the movable frame 74, so as to drive the balance weight assembly 4 to rotate in the vertical plane of the front-rear direction y, thereby changing the gravity center position of the pipe crane.

In some embodiments, as shown in fig. 3 and 4, the pipe crane further includes a first bracket 10, the first bracket 10 is provided on the movable frame 74, and the counterweight assembly 4 is mounted on the movable frame 74 through the first bracket 10. For example, the first bracket 10 may be installed at a position where the movable frame 74 is close to the outside in the left-right direction x, and the counterweight group 4 may be located at an area outside the movable frame 74 and outside the chassis 1 to better achieve center of gravity adjustment. For example, the main body portion of the first bracket 10 may have a rectangular parallelepiped or trapezoid structure.

This embodiment allows easy mounting and dismounting of the balancing weight 4 and easy assembly of a plurality of balancing weights 41 by mounting the balancing weight 4 on the movable frame 74 via the first bracket 10.

In some embodiments, as shown in fig. 3 and 4, the balancing weight 4 includes two balancing weights 41, as shown in fig. 11, one side of the balancing weights 41 is provided with a first ear plate group 42, as shown in fig. 9 and 10, both sides of the first bracket 10 in the front-rear direction y are provided with a second ear plate group 102, and the second ear plate group 102 is connected with the first ear plate group 42 to mount the balancing weights 41 to the first bracket 10. For example, the second ear plate set 102 is detachably connected to the first ear plate set 42, and the counterweight 41 may have a rectangular parallelepiped structure.

This embodiment can easily connect two counterweights 41 on both sides of the first bracket 10 in the front-rear direction y, and can improve connection reliability.

In some embodiments, as shown in fig. 11, the first ear plate group 42 includes a plurality of first ear plates 42 'arranged at intervals along the height direction z, and as shown in fig. 9 and 10, the second ear plate group 102 includes a plurality of second ear plates 102' arranged at intervals along the height direction z, and the plurality of first ear plates 42 'are connected in one-to-one correspondence with the plurality of second ear plates 102'.

This embodiment can improve connection reliability by providing a plurality of connection points between the counterweight 41 and the first bracket 10.

In some embodiments, the second set of earplates 102 is rotatably coupled with the first set of earplates 42 in a plane perpendicular to the height direction z. For example, the first ear plate 42 'is rotatably connected to the second ear plate 102' at the corresponding position by a pin extending in the height direction z.

As shown in fig. 17, the angle between the two counterweights 41 is unfolded to 180 ° so that the counterweights 41 do not exceed the outer edge of the movable frame 74 in the left-right direction x, and in this retracted state, the counterweights 41 are parallel to the first frame 10, whereby, during traveling of the crane, if the traveling space is narrow, collision of the counterweights 41 with other objects can be avoided to improve the trafficability of the crane and the traveling safety. In operation, the two counterweights 41 can be adjusted to an angle of less than 180 ° where the counterweights 41 are at an angle to the first support 10.

According to the embodiment, on the basis that the second adjusting assembly 9 enables the balance weight assembly 4 to rotate in the vertical plane where the front-back direction y is located to change the posture, the gravity center can be adjusted by changing the included angle between the two balance weights 41, and the gravity center of the pipe crane can be adjusted according to actual operation requirements more flexibly.

In some embodiments, as shown in fig. 9, two first hinge seats 101 are provided at the middle area of the top of the first bracket 10 along the front-rear direction y, and as shown in fig. 11, a second hinge seat 411 is provided at the top of the counterweight 41, and the pipe crane further includes two second linear driving members 40, two ends of the second linear driving members 40 are respectively connected to the first hinge seat 101 and the second hinge seat 411, for driving the counterweight 41 to rotate.

For example, the second linear driving member 40 may be an electric push rod, a hydraulic cylinder, or an air cylinder, and the second linear driving member 40 may flexibly and conveniently adjust the angle of the counterweight 41 relative to the first bracket 10 through telescoping, so as to adjust the gravity center position of the pipe crane, and improve the stability of the pipe crane during slope operation.

In some embodiments, the pipe crane further includes an amplitude variation mechanism 8 for amplitude variation of the boom 2, where the amplitude variation mechanism 8 and the counterweight assembly 4 are mounted on the same movable frame 74, and in the left-right direction x, a mounting area of the amplitude variation mechanism 8 is located inside a mounting area of the counterweight assembly 4. Wherein the horn 8 and counterweight assembly 4 are mounted on a movable frame 74 remote from the boom 2.

In this embodiment, the luffing mechanism 8 and the balance weight assembly 4 are both installed on the same movable frame 74, and the angle of the luffing mechanism 8 and the balance weight assembly 4 can be adjusted simultaneously by the second adjusting assembly 9, so that the leveling control difficulty can be reduced, and the structure can be simplified. Moreover, the amplitude variation mechanism 8 is positioned at one side far away from the arm support 2, which is beneficial to applying amplitude variation acting force to the arm support 2.

In some embodiments, as shown in fig. 4, the pipe crane further includes an amplitude variation mechanism 8 for amplitude variation of the boom 2, where the amplitude variation mechanism 8 includes a third linear driving component 81 and a third hinge base 82, the third hinge base 82 is mounted on the movable frame 74, a center line of the third linear driving component 81 is located in a center plane of the boom 2, a first end of the third linear driving component 81 is connected to the third hinge base 82, and a second end of the third linear driving component 81 is connected to the boom 2.

For example, the third linear driving member 81 may be a hydraulic cylinder, which can provide a large driving force at the time of amplitude, or the third linear driving member 81 may be a cylinder, an electric push rod, or the like. The bottom end of the third linear driving component 81 is connected to the third hinge base 82, and the top end is connected to the top end of the arm support 2, so as to provide driving force for amplitude variation of the arm support 2 through expansion and contraction.

In the embodiment, the third linear driving part 81 is adopted to realize the amplitude variation of the arm support 2, so that an amplitude variation steel wire rope is omitted, the structural complexity related to the amplitude variation function can be reduced, the reliability of the amplitude variation function is improved, and in addition, the third linear driving part 81 has better rigidity compared with the steel wire rope, and the accuracy of amplitude variation angle control can be improved. In addition, the limit position of the amplitude variation of the arm support 2 can be limited by the expansion limit stroke position of the third linear driving part 81, and an additional amplitude variation limiting device of the arm support 2 is not required to be arranged. Moreover, the bottom end of the third linear driving member 81 is hinged to the movable frame 74 through the third hinge base 82, so that the installation and leveling of the third linear driving member 81 are facilitated.

In some embodiments, as shown in fig. 1 to 3, the pipe crane further comprises an amplitude changing mechanism 8 for amplitude changing the boom 2, the amplitude changing mechanism 8 comprises a second bracket 83 and a hoisting mechanism 84, the second bracket 83 is mounted on the movable bracket 74, the hoisting mechanism 84 is arranged on the second bracket 83, and the hoisting mechanism 84 drives the boom 2 to amplitude through an amplitude changing steel wire rope 85.

The second bracket 83 may include two supporting side plates, the hoisting mechanism 84 may be installed between the two supporting side plates, the variable-amplitude steel wire rope 85 is wound on the hoisting mechanism 84, the pulley block 86 may be disposed at the top ends of the second bracket 83 and the arm support 2, and the variable-amplitude steel wire rope 85 may bypass the pulley block 86.

According to the embodiment, the amplitude is realized through the winch mechanism 84 matched with the amplitude steel wire rope 85, the requirement on the installation precision between the amplitude mechanism 8 and the arm support 2 along the length direction y can be reduced, and even if the position deviation occurs, the amplitude steel wire rope 85 is a flexible piece, so that the arm support 2 can be prevented from being subjected to larger unbalanced load. When the movable frame 74 rotates, the second bracket 83, the winding mechanism 84 and the variable amplitude steel wire rope 85 are subjected to angle adjustment, so that the variable amplitude steel wire rope 85 can be prevented from being twisted, the service life of the variable amplitude steel wire rope 85 can be prolonged, and the hoisting operation is not influenced when the leveling operation is performed.

In some embodiments, the bottoms of the two stringers 21 are respectively hinged to both ends of the movable frame 74 in the front-rear direction y, and the hinge shaft is provided in the front-rear direction y. The longitudinal beam 21 may have a long strip structure, and its cross section may be rectangular or other polygonal shape.

In this embodiment, the two stringers 21 are hinged to the movable frame 74, and when the movable frame 74 is driven to move by the first linear driving member 70, the boom 2 is driven to level.

In some embodiments, as shown in fig. 5 and 6, the chassis 1 comprises: the crawler belt frame comprises a frame 11 and two crawler belt frames 12, wherein the two crawler belt frames 12 are respectively connected to two sides of the frame 11 along the left-right direction x, and the crawler belt frames 12 are surrounded by crawler belts 13. The first mounting plate 71 is mounted on one of the track frames 12 and is located at a position close to the outside in the left-right direction x, and the tripod 72 and the two first linear driving members 70 are located outside the track 13.

This embodiment enables both the first and second adjustment assemblies 7, 9 to be mounted by means of two track frames 12 without affecting the walking of the tracks 13.

In some embodiments, as shown in fig. 8, the region of the outside of the track frame 12 near the bottom is provided with two extension plates 121, the two extension plates 121 being spaced apart in the front-rear direction y, and the first mounting plate 71 being fixed to the two extension plates 121.

Because the width of the track 13 is greater than that of the track frame 12, it is difficult to install the first mounting plate 71, and by providing the extension plates 121, it is convenient to mount the first mounting plate 71 on the two extension plates 121, and the structure of the first mounting plate 71 can be simplified, and the tripod 72 is also facilitated to be integrally located outside the track 13.

In some embodiments, as shown in fig. 5 to 7, the chassis 1 includes: the crawler belt frame comprises a frame 11 and two crawler belt frames 12, wherein the two crawler belt frames 12 are respectively connected to two sides of the frame 11 along the left-right direction x, and the crawler belt frames 12 are surrounded by crawler belts 13. Wherein the first and second adjusting assemblies 7 and 9 further comprise: a connecting beam 75 and a second mounting plate 75', the second mounting plate 75' being mounted to the side of the frame 11, the connecting beam 75 being connected between the tripod 72 and the second mounting plate 75', and the connecting beam 75 being located above the tracks 13.

The second mounting plate 75' may have a plate-like structure, and may be mounted to the side of the frame 11 by fasteners. The connection beam 75 has a predetermined distance from the caterpillar 13, and the connection beam 75 may be connected to an area of the tripod 72 near the top.

In this embodiment, the bottom area of the tripod 72 is fixed to the crawler frame 12 via the first mounting plate 71, and the top area of the tripod 72 is also fixed to the frame 11 via the connecting beam 75 and the second mounting plate 75', so that the tripod 72 can be stably and reliably fixed, the structural members in the first adjusting assembly 7 are not easily deformed during the leveling operation, and the adjustment accuracy of the leveling angle can be improved.

In some embodiments, as shown in fig. 9 and 10, the movable frame 74 includes a mounting beam 741 and a triangle 742, the mounting beam 741 is connected to the arm frame 2 and the first linear driving member 70, and a middle region of the mounting beam 741 is hinged to the triangle 72, a connection side of the triangle 742 is mounted to an inner side of the mounting beam 741 in the left-right direction x, a vertex angle of the triangle 742 opposite to the connection side is provided with a shaft 76, and the shaft 76 extends in the left-right direction x and is rotatably mounted to the second mounting plate 75'.

In the second adjusting unit 9, as shown in fig. 9 and 10, the mounting beam 741 extends along the front-rear direction y, the mounting beam 741 has an inverted U shape as a whole, and the top of the tripod 72 is embedded in the inverted U-shaped structure and hinged to the mounting beam 741.

As shown in fig. 12 and 13, in the first adjusting assembly 7, the mounting beam 741 extends along the front-rear direction y, the middle section of the mounting beam 741 may have an inverted U shape, a first hole 7411 may be provided on a side wall thereof, and the top of the fixing frame may be embedded in the inverted U-shaped structure and hinged with the mounting beam 741 through the first hole 7411. Two ends of the mounting beam 741 are respectively provided with a U-shaped hinging seat 7412, openings of the U-shaped hinging seats 7412 are positioned on the outer sides of the mounting beam 741 along the left-right direction x, the bottom ends of the two longitudinal beams 21 are respectively arranged on the two U-shaped hinging seats 7412, and hinging shafts extend along the front-back direction y to realize amplitude variation of the arm support 2.

As shown in fig. 13, the bottom of the mounting beam 741 is provided with fifth hinge seats 7413 at both ends in the front-rear direction y, respectively, and both ends of the first linear driving member 70 are hinged to the fourth hinge seat 73 and the fifth hinge seat 7413, respectively, with hinge shafts extending in the left-right direction x.

The movable frame 74 of this embodiment can be hinged to the chassis 1, the side members 21 and the first linear driving member 70 at the same time, and the movable frame 74 can be mounted to the frame 11 to improve the mounting stability, whereby the reliability and accuracy of leveling can be improved.

As shown in fig. 5 to 7, fourth hinge seats 73 are provided on both sides of the tripod 72 on the first mounting plate 71, respectively. The bottom of the mounting beam 741 is provided with second hinge seats 411 at both ends in the front-rear direction y, respectively, and both ends of the first linear driving member 70 are hinged with the first hinge seat 101 and the second hinge seat 411, respectively, and the hinge shaft extends in the left-right direction x.

As shown in fig. 9, 10, 12 and 13, the apex angle of the triangle 742 opposite to the connecting side is provided with a third mounting plate 743, the shaft 76 is provided at the apex angle of the triangle 742 through the third mounting plate 743, and passes through a second hole 751 in the second mounting plate 75', and the side of the second mounting plate 75' remote from the connecting beam 75 is provided with a nut 77 and screwed on the end of the shaft 76 to fix the movable frame 74 to the frame 11.

The movable frame 74 of this embodiment can be simultaneously hinged with the tripod 72, the side member 21 and the first linear driving member 70, and the movable frame 74 can be mounted on the frame 11 to improve the mounting stability, whereby the reliability and accuracy of leveling can be improved.

In some embodiments, as shown in fig. 4, a lifting mechanism 3 is provided at the bottom area of the boom 2, for driving the lifting hook 6 to lift by a lifting wire rope 5.

The lifting mechanism 3 may be disposed between two stringers 21, and includes a lifting motor and a reel, one end of a lifting wire rope 5 is wound on the reel, and the other end of the lifting wire rope penetrates to the outer side of the arm support 2 from a region between the two stringers 21 and located at the top end, and is connected with the lifting hook 6.

According to the embodiment, the lifting mechanism 3 is fixed on the arm support 2, and when the angle of the arm support 2 is adjusted in the longitudinal plane where the front-back direction y is located, the lifting mechanism 3 can directly change the angle along with the arm support 2, so that the lifting operation can be ensured to be smoothly carried out. In addition, the lifting mechanism 3 is arranged at the bottom area of the arm support 2, and can provide larger lifting driving force through the lifting steel wire rope 5.

In some embodiments, as shown in fig. 14 to 16, in the case of a pipe crane on a sloping road, the first adjusting assembly 7 is configured to adjust the boom 2 to a vertical state, and the second adjusting assembly 9 is configured to adjust the counterweight assembly 4 and the luffing mechanism 8 to a state in which the boom 2 is adapted.

Because when the hoisting operation is performed on the sloping road, if the arm support 2 inclines relative to the vertical plane, the hoisting weight easily enables the arm support 2 to be laterally loaded, the arm support 2 is adjusted to be in a vertical state through the first adjusting component 7, the arm support 2 can be prevented from being laterally loaded, so that the arm support 2 is prevented from being deformed or damaged, at the moment, the angle between the central plane of the arm support 2 and the chassis 1 is not 90 degrees, when the hoisting operation is performed on the sloping road, the included angle between the arm support 2 and the front part of the chassis 1 is an acute angle, and when the hoisting operation is performed on the sloping road, the included angle between the arm support 2 and the front part of the chassis 1 is an obtuse angle.

Correspondingly, in order to ensure that the lifting operation is smoothly carried out, after the angle of the arm support 2 is adjusted in the vertical plane where the front-back direction is located, the amplitude variation mechanism 8 also rotates to the same angle, so that the amplitude variation mechanism 8 is prevented from being twisted and the arm support 2 is prevented from being laterally loaded by applying amplitude variation and lifting acting force in the central plane of the arm support 2. Moreover, the counterweight assembly 4 is also rotated by the same angle as the horn 8 to adjust the center of gravity of the crane.

In the leveling state of the embodiment, when the special machine for mountain pipe hanging runs on a sloping road or performs lifting operation, the damage of the arm support 2 caused by side load can be prevented to the greatest extent, the instability caused by the fact that the whole machine is subjected to large torque is prevented, and the safety, reliability and stability of the lifting of the sloping road are ensured.

In some embodiments, the first adjustment assembly 7 adjusts in synchronization with the second adjustment assembly 9.

According to the embodiment, the hoisting related mechanism can be synchronously adjusted, so that the steel wire rope connected between the amplitude changing mechanism 8 and the arm support 2 can be prevented from being twisted, the service life of the steel wire rope can be prolonged, and the hoisting operation is not influenced when the leveling operation is performed; or when the third linear driving part 81 is adopted to drive the amplitude variation, the unbalanced load on the third linear driving part 81 can be reduced, and the smooth amplitude variation action is ensured.

In some embodiments, as shown in fig. 14 to 16, the boom 2 rotates about a first hinge axis a in a vertical plane in which the front-rear direction y is located, the horn 8 and the counterweight assembly 4 rotate about a second hinge axis B in a vertical plane in which the front-rear direction y is located, the first hinge axis a and the second hinge axis B each extend in the left-right direction x, and the center lines coincide.

The embodiment can ensure that the relative positions of the arm support 2 and the luffing mechanism 8 are kept unchanged when the same angle is leveled, ensure the safe execution of hoisting operation, and ensure that the balance weight assembly 4 and the luffing mechanism 8 are synchronously adjusted by the same angle so as to further ensure the operation safety in the same manner by adjusting the gravity center.

In some embodiments, the first and second adjustment assemblies 7, 9 are adjusted in a range of-30 ° to +30° based on a direction perpendicular to the chassis 1.

According to the embodiment, the arm support 2, the amplitude changing mechanism 8 and the balance weight assembly 4 are adjusted within the range of +/-30 degrees of the reference direction, the leveling angle can be limited within a preset range, the situation that the gravity center distribution of the pipe crane is greatly changed due to overlarge leveling angle is avoided, and the safety of crane operation can be improved.

The working principle of the embodiment of the application is as follows: when the mountain large-slope hoisting construction is performed, the arm support 2 is firstly leveled through the first adjusting component 7, and the amplitude changing mechanism 8 and the balance weight component 4 are leveled through the second adjusting component 9, so that leveling within the range of +/-30 degrees is realized according to a slope angle, and the first adjusting component 7 and the second adjusting component 9 can be synchronously leveled during leveling, so that the central plane of the arm support 2 and the central plane of the third linear driving component 81 are always coincident. And after leveling, lifting operation is performed, at the moment, the boom crane cannot be laterally loaded, the whole crane cannot be subjected to torque, and the safety, reliability and stability of ramp lifting are ensured.

The foregoing is illustrative of the present disclosure and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., which are within the spirit and principles of the present disclosure.

Claims (22)

1. A pipe hoist, comprising:

a chassis (1);

the arm support (2) is arranged on a first side of the chassis (1) along the left-right direction (x), the arm support (2) comprises two longitudinal beams (21), and the two longitudinal beams (21) are arranged at intervals along the front-back direction (y) of the chassis (1);

the first adjusting component (7) is arranged on a first side of the chassis (1) along the left-right direction (x) and is used for adjusting the angle of the arm support (2) in the vertical plane where the front-back direction (y) is located;

a counterweight assembly (4) provided on a second side of the chassis (1) in the left-right direction (x); and

and the second adjusting assembly (9) is arranged on the second side of the chassis (1) along the left-right direction (x) and is used for adjusting the angle of the balance weight assembly (4) in the vertical plane where the front-back direction (y) is located.

2. A pipe crane according to claim 1, further comprising an amplitude variation mechanism (8) for amplitude variation of the boom (2), the second adjustment assembly (9) being adapted to adjust the angle of the amplitude variation mechanism (8) in a vertical plane in which the fore-aft direction (y) is located.

3. A pipe crane according to claim 1, wherein the first and second adjustment assemblies (7, 9) each comprise:

The fixing frame comprises a first mounting plate (71) and a tripod (72), wherein the first mounting plate (71) is fixed on the chassis (1), and the tripod (72) is fixed above the first mounting plate (71);

a movable frame (74) rotatably mounted on the top of the tripod (72) through a first hinge shaft (a) in a middle region in the front-rear direction (y), the first hinge shaft (a) extending in the left-right direction (x); and

and two first linear driving parts (70) are respectively positioned at two sides of the tripod (72) along the front-back direction (y), and two ends of each first linear driving part (70) are respectively hinged with the fixed frame and the movable frame (74).

4. A pipe crane according to claim 3, characterized in that the balancing weight assembly (4) is mounted on the movable frame (74).

5. The tube crane according to claim 4, further comprising a first bracket (10), the first bracket (10) being provided on the movable frame (74), the counterweight assembly (4) being mounted on the movable frame (74) by the first bracket (10).

6. The tube crane according to claim 5, wherein the balancing weight assembly (4) comprises two balancing weights (41), a first ear plate group (42) is provided on one side of the balancing weights (41), second ear plate groups (102) are provided on both sides of the first bracket (10) along the front-rear direction (y), and the second ear plate groups (102) are connected with the first ear plate groups (42) to mount the balancing weights (41) to the first bracket (10).

7. The pipe crane according to claim 6, wherein the first lug plate group (42) includes a plurality of first lug plates (42 ') arranged at intervals in the height direction (z), and the second lug plate group (102) includes a plurality of second lug plates (102') arranged at intervals in the height direction (z), and the plurality of first lug plates (42 ') are connected in one-to-one correspondence with the plurality of second lug plates (102').

8. A pipe crane according to claim 6, characterized in that the second set of lugs (102) is rotatably connected with the first set of lugs (42) in a plane perpendicular to the height direction (z).

9. The pipe crane according to claim 8, wherein the top of the first bracket (10) is provided with two first hinge seats (101) along the middle area of the front-back direction (y), the top of the counterweight (41) is provided with a second hinge seat (411), the pipe crane further comprises two second linear driving components (40), and two ends of the second linear driving components (40) are respectively connected with the first hinge seat (101) and the second hinge seat (411) and are used for driving the counterweight (41) to rotate.

10. A pipe crane according to claim 3, further comprising an amplitude variation mechanism (8) for amplitude variation of the boom (2), the amplitude variation mechanism (8) and the counterweight assembly (4) being mounted on the same movable frame (74), the mounting area of the amplitude variation mechanism (8) being located inside the mounting area of the counterweight assembly (4) in the left-right direction (x).

11. A pipe hoist according to claim 3, further comprising an amplitude variation mechanism (8) for amplitude variation of the boom (2), the amplitude variation mechanism (8) comprising a third linear drive member (81) and a third articulation (82), the third articulation (82) being mounted on a movable frame (74), a centre line of the third linear drive member (81) being located in a centre plane of the boom (2), a first end of the third linear drive member (81) being connected to the third articulation (82), a second end of the third linear drive member (81) being connected to the boom (2).

12. A pipe hoist as claimed in claim 3, further comprising an amplitude variation mechanism (8) for amplitude variation of the boom (2), the amplitude variation mechanism (8) comprising a second support (83) and a hoisting mechanism (84), the second support (83) being mounted on the movable frame (74), the hoisting mechanism (84) being provided on the second support (83), the hoisting mechanism (84) driving the boom (2) to amplitude via an amplitude variation wire rope (85).

13. A pipe hoist according to claim 3, characterized in that the bottoms of the two stringers (21) are hinged to both ends of the movable frame (74) in the front-rear direction (y), respectively, and hinge shafts are provided in the front-rear direction (y).

14. A pipe crane according to any one of claims 3 to 13, wherein the chassis (1) comprises: the crawler belt comprises a frame (11) and two crawler belt frames (12), wherein the two crawler belt frames (12) are respectively connected to two sides of the frame (11) along the left-right direction (x), and the crawler belt frames (12) are surrounded by crawler belts (13);

wherein the first mounting plate (71) is mounted on one of the crawler frames (12) and is positioned close to the outer side along the left-right direction (x), and the tripod (72) and the two first linear driving members (70) are both positioned on the outer side of the crawler (13).

15. A pipe hoist according to claim 14, characterized in that the outer side of the crawler frame (12) is provided with two extension plates (121) in a region near the bottom, the two extension plates (121) being arranged at intervals in the front-rear direction (y), the first mounting plate (71) being fixed to the two extension plates (121).

16. A pipe crane according to any one of claims 3 to 13, wherein the chassis (1) comprises: the crawler belt comprises a frame (11) and two crawler belt frames (12), wherein the two crawler belt frames (12) are respectively connected to two sides of the frame (11) along the left-right direction (x), and the crawler belt frames (12) are surrounded by crawler belts (13);

Wherein the first adjustment assembly (7) and the second adjustment assembly (9) each further comprise: a connecting beam (75) and a second mounting plate (75 '), the second mounting plate (75 ') being mounted to the side of the frame (11), the connecting beam (75) being connected between the tripod (72) and the second mounting plate (75 '), and the connecting beam (75) being located above the track (13).

17. A pipe crane according to claim 16, characterized in that the movable frame (74) comprises a mounting beam (741) and a triangle (742), the mounting beam (741) being connected to the boom (2) and the first linear drive member (70), and that a middle area of the mounting beam (741) being hinged to the triangle (72), a connection side of the triangle (742) being mounted inside the mounting beam (741) in a left-right direction (x), an apex angle of the triangle (742) opposite to the connection side being provided with a shaft (78), the shaft (78) extending in the left-right direction (x) and being rotatably mounted to the second mounting plate (75').

18. The pipe crane according to any one of claims 1 to 13, further comprising a lifting mechanism (3) arranged in a bottom area of the arm support (2) for driving the lifting hook (6) to perform lifting operation through the lifting wire rope (5).

19. A pipe crane according to claim 2, characterized in that the first adjusting assembly (7) is configured to adjust the boom (2) to a vertical state and the second adjusting assembly (9) is configured to adjust the counterweight assembly (4) and the luffing mechanism (8) to a state in which the boom (2) is adapted in case the pipe crane is on a sloping road.

20. A pipe crane according to claim 2, characterized in that the first adjustment assembly (7) is adjusted in synchronization with the second adjustment assembly (9).

21. A pipe crane according to claim 2, wherein the boom (2) rotates about a first hinge axis (a) in a vertical plane in which the fore-and-aft direction (y) is located, the horn (8) and the counterweight assembly (4) rotate about a second hinge axis (B) in a vertical plane in which the fore-and-aft direction (y) is located, the first hinge axis (a) and the second hinge axis (B) both extend in the left-to-right direction (x) and the centre lines coincide.

22. A pipe crane according to claim 2, characterized in that the first (7) and second (9) adjustment assemblies are adjusted in a range of-30 ° to +30° with respect to a direction perpendicular to the chassis (1).

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