Operating machine

Abstract

The invention discloses an operation machine which comprises a moving mechanism, a rotary table, a telescopic arm and supporting legs. The rotary table is arranged on the moving mechanism and can rotate around the rotation center of the rotary table. The telescopic arm is arranged on the turntable; the supporting legs are telescopically arranged on the moving mechanism; the operation machine has the on-load landing leg hitting working condition, and when the operation machine is in the on-load landing leg hitting working condition, the landing leg can stretch out and be supported on the ground in the state that the telescopic arm hoists a heavy object. The rotary table is arranged on the moving mechanism, the telescopic arm is arranged on the rotary table, the telescopic arm can rotate along the rotation center so as to adapt to different operation angles, adaptability is high, the moving mechanism can drive the rotary table, the telescopic arm and the supporting legs to move so as to move to the instruction position for hoisting operation, and flexibility is high; the supporting legs are arranged on the moving mechanism to be supported on the ground, the size between the operation machine and the ground can be compensated, and the hoisting stability of the operation machine is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to an operating machine. Background Art

[0002] Working machinery, especially cranes and hoists, plays a vital role in modern engineering construction. They are widely used in high-rise buildings, bridge construction, port operations and other occasions that require large-scale material handling. Working machinery can efficiently lift and move heavy objects through its telescopic arm system, greatly improving the efficiency and safety of engineering operations. However, with the continuous expansion of the scale of projects and the increasing complexity of the operating environment, the performance requirements for working machinery are also constantly increasing, especially in terms of operating efficiency and lifting stability.

[0003] Working machines in the prior art, such as traditional cranes, usually use telescopic arms to lift heavy objects. During the lifting process, in order to ensure the stability of the lifting, the machine needs to first unload the hoisted heavy objects, then extend the outriggers, and finally lift the heavy objects to a specified height through the telescopic arms. However, the process of unloading the heavy objects and then extending the outriggers is not only time-consuming, but also easily causes safety hazards in frequent operation conversions, limiting the application efficiency of working machines in high-intensity and high-frequency working environments.

[0004] In addition, traditional operating machinery lacks synchronization between outrigger deployment and heavy lifting, which to some extent affects the working efficiency and response speed of the machinery. In working environments with complex terrain or limited space, frequent outrigger deployment and retraction operations not only increase working time, but may also cause the driving stability of the machinery to decrease, thus affecting the progress and safety of the entire project. Summary of the invention

[0005] An object of the present invention is to provide a working machine with higher working efficiency.

[0006] The operating machine provided by the present invention comprises a moving mechanism, a turntable, a telescopic arm and outriggers; the turntable is arranged on the moving mechanism, and the turntable can rotate around its rotation center; the telescopic arm is arranged on the turntable; the outriggers are telescopically arranged on the moving mechanism; the operating machine has a working condition of outriggers with load, and when the operating machine is in the working condition of outriggers with load, the outriggers can be extended and supported on the ground in a state where the telescopic arms are hoisting heavy objects.

[0007] In one embodiment of the above-mentioned working machine, the working machine has a loaded traveling condition. When the working machine is in the loaded traveling condition, the moving mechanism can move in a state where the telescopic arm hoists a heavy object.

[0008] In one embodiment of the above-mentioned working machinery, the moving mechanism includes a pitch changing mechanism and two crawler frames, the two crawler frames are respectively arranged on both sides of the pitch changing mechanism along the pitch changing direction, the two crawler frames have a first position close to each other and a second position far away from each other along the pitch changing direction, and when the working machinery is in the loaded driving condition, the two crawler frames switch to the second position.

[0009] In one embodiment of the above working machine, there are multiple legs, and the multiple legs are arranged on the moving mechanism at intervals along the circumferential direction of the rotation center.

[0010] In one embodiment of the above-mentioned working machine, the supporting leg is rotatably connected to the moving mechanism, and the working machine includes a swing cylinder, which is arranged on the moving mechanism and is used to drive the supporting leg to rotate in a circumferential direction.

[0011] In one embodiment of the above-mentioned working machinery, the support leg includes a rotating arm, a supporting tube and a lifting cylinder; the rotating arm is rotatably connected to the moving mechanism, the rotating arm includes a plurality of rotating joint arms, the plurality of rotating joint arms can be extended and retracted in a direction perpendicular to the rotating axis, and the swing cylinder is drivingly connected to the rotating arm; the supporting tube is connected to the rotating arm, and a supporting portion is formed inside the supporting tube; the lifting cylinder is arranged in the supporting tube and in contact with the supporting portion, and the telescopic cylinder can extend out of the supporting tube and be supported on the ground.

[0012] In one embodiment of the above-mentioned working machine, the telescopic rod of the lifting cylinder is fixedly arranged in the supporting tube, the outer peripheral surface of the cylinder barrel of the lifting cylinder is in contact with the supporting part, and the cylinder barrel of the lifting cylinder can extend out of the supporting tube and be supported on the ground.

[0013] In one embodiment of the above-mentioned working machinery, the support cylinder includes a sleeve, a support sleeve and a support ring; the sleeve is fixedly connected to the rotating arm; the support sleeve is supported and arranged at one end of the sleeve, the support sleeve is arranged on the outer periphery of the cylinder barrel, and an annular groove is formed in the support sleeve; the support ring is arranged in the annular groove, and the support portion is formed on the side of the support ring facing the cylinder barrel of the lifting cylinder.

[0014] In one embodiment of the above working machine, a socket is formed at one end of the annular groove along the top and bottom direction, the socket is communicated with the annular groove, and the support ring is inserted into the annular groove through the socket.

[0015] In one embodiment of the above-mentioned working machine, the support cylinder includes a cover plate and a dustproof member, the cover plate is covered on the socket, and the dustproof member is arranged in the annular gap between the cover plate and the cylinder barrel of the lifting cylinder.

[0016] The beneficial effects of the present invention are:

[0017] 1. By setting the turntable on the moving mechanism and the telescopic arm on the turntable, the telescopic arm can rotate along the rotation center to adapt to different working angles, with strong adaptability, and the moving mechanism can drive the turntable, telescopic arm and outriggers to move to the command position for lifting operations, with strong flexibility;

[0018] 2. By setting the outriggers on the mobile mechanism to support it on the ground, the size between the operating machine and the ground can be compensated, and the lifting stability of the operating machine can be improved;

[0019] 3. When the telescopic arm is in the state of hoisting heavy objects and the heavy objects need to be hoisted to a specified height, the operating machinery can be set in the condition of loaded outriggers. At this time, the outriggers can be extended and supported on the ground, and the telescopic arm can directly hoist the heavy objects to the specified position, so that there is no need to put down the heavy objects first and then stretch the outriggers, and then hoist the heavy objects and hoist them to the specified height. In this way, the operating efficiency of the operating machinery can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a working machine provided in an embodiment of the present application, wherein the working machine is in a no-load driving condition;

[0021] Figure 2 A schematic diagram of the structure of a working machine provided by another embodiment of the present application, wherein the working machine is in a fixed-point working condition;

[0022] Figure 3 A schematic diagram of the structure of a working machine provided in yet another embodiment of the present application, wherein the working machine is in a loaded outrigger working condition;

[0023] Figure 4 A structural schematic diagram of a working machine provided in yet another embodiment of the present application, wherein the working machine is in an outrigger working condition;

[0024] Figure 5 A schematic diagram of the structure of a moving mechanism, a leg and a swing cylinder provided in another embodiment of the present application, wherein the swing cylinder and the rotating arm are both in a retracted state;

[0025] Figure 6 A schematic diagram of the structure of a moving mechanism, a leg and a swing cylinder provided in another embodiment of the present application, wherein the swing cylinder and the rotating arm are both in an extended state;

[0026] Figure 7 A schematic diagram of the structure of a support leg provided in yet another embodiment of the present application, wherein the rotating arm and the lifting cylinder are both in a retracted state;

[0027] Figure 8 for Figure 7 A schematic cross-sectional view from another perspective;

[0028] Fig. 9 for Figure 8 Magnified view of point F in FIG.

[0029] Description of Reference Numerals

[0030] 100. Operating machinery; 1. Moving mechanism; 11. Pitch-changing mechanism; 12. Track frame; 13. Mounting plate; 13a. Connecting portion; 2. Turntable; 3. Telescopic arm; 31. First arm; 32. Second arm; 4. Leg; 41. Rotating arm; 411. First rotating joint arm; 412. Second rotating joint arm; 42. Support cylinder; 421. Sleeve; 422. Support sleeve; 422a. Ring groove; 422b. Socket; 423. Support ring; 423a. Support portion; 424. Cover plate; 425, dustproof parts; 43, lifting cylinder; 431, telescopic rod of lifting cylinder; 432, cylinder barrel of lifting cylinder; 5, first luffing cylinder; 6, second luffing cylinder; 7, swing cylinder; 71, cylinder barrel of swing cylinder; 72, telescopic rod of swing cylinder; 8, hydraulic oil tank; 9, power unit; A, rotation center; B, heavy object; G1, center of gravity of first arm; G2, center of gravity of hydraulic oil tank; G3, center of gravity of power unit; G4, center of gravity of turntable; G5, center of gravity of moving mechanism;

[0031] Figure 1 R1 in the figure is the top-bottom direction, the top is pointing to the ceiling, and the bottom is in the opposite direction to the top; Figure 5 R2 in is the pitch changing direction; Figure 1 R3 is the first direction; wherein the first direction, the pitch changing direction and the top and bottom directions are perpendicular to each other. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technical solutions. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Reference Figures 1 to 9 The working machine disclosed in this embodiment includes a moving mechanism 1, a turntable 2, a telescopic arm 3 and a leg 4.

[0034] The turntable 2 is arranged on the mobile mechanism 1, and the turntable can rotate around its rotation center A. The telescopic arm 3 is arranged on the turntable. The outrigger 4 is telescopically arranged on the mobile mechanism. The operating machine has a working condition of outriggers with load. When the operating machine is in the working condition of outriggers with load, the outrigger 4 can be extended and supported on the ground in the state that the telescopic arm 3 hoists a heavy object B.

[0035] The operating machinery provided in the present application has a telescopic arm 3 that can rotate along the rotation center A to adapt to different operating angles, and has strong adaptability; the mobile mechanism 1 can drive the turntable 2, the telescopic arm 3 and the support leg 4 to move, so as to move to the command position for lifting operations, and has strong flexibility; the support leg 4 is arranged on the mobile mechanism 1 to be supported on the ground, which can compensate for the size between the operating machinery and the ground and improve the lifting stability of the operating machinery.

[0036] The telescopic arm 3 is in the state of hoisting the heavy object B. When the heavy object B needs to be hoisted to a specified height, the operating machine can be set in the condition of loading and outrigger operation; in this way, the outriggers 4 can be extended and supported on the ground, and the telescopic arm 3 can directly hoist the heavy object B to the specified position, so that there is no need to first put down the heavy object B and then extend the outriggers 4, and then hoist the heavy object B and hoist it to the specified height. In this way, the operating efficiency of the operating machine can be greatly improved.

[0037] In one embodiment, the rotation center A may extend along the top-bottom direction.

[0038] In one embodiment, the rotation center A passes through the center of gravity G5 of the moving mechanism.

[0039] In one embodiment, please refer to Figures 1 to 4 The telescopic arm 3 includes a first arm 31 and a second arm 32. The first arm is rotatably connected to the turntable 2. The first arm and the second arm are rotatably connected. The operating machine includes a first luffing cylinder 5. The first luffing cylinder is telescopically supported between the first arm and the turntable.

[0040] For example, the cylinder barrel of the first luffing cylinder 5 can be rotatably connected to the turntable 2, and the telescopic rod of the first luffing cylinder can be rotatably connected to the first arm 31. The angle between the first arm and the turntable can be adjusted by extending and retracting the first luffing cylinder, thereby further improving the operating range and flexibility of the operating machine.

[0041] In one embodiment, please refer to Figures 1 to 4 The operating machine includes a second luffing cylinder 6, a cylinder barrel of the second luffing cylinder is rotatably arranged on the first arm 31, and a telescopic rod of the second luffing cylinder is rotatably arranged on the second arm 32. By telescoping the second luffing cylinder, the angle between the first arm and the second arm can be adjusted to achieve stepless adjustment.

[0042] In this way, not only can the operating range and flexibility of the operating machinery be further improved, but the angle can also be adjusted accurately.

[0043] In one embodiment, please refer to Figure 1 , no-load driving condition: the angle between the first arm 31 and the turntable 2 can be 0°, and the angle between the first arm 31 and the second arm 32 can be 0°.

[0044] In this way, the center of gravity of the operating machinery can be lowered, making driving more stable and reducing the possibility of rollover.

[0045] In one embodiment, please refer to Figure 2 The operating machine has a fixed-point operating condition. When the operating machine is in the fixed-point operating condition, the telescopic arm 3 can perform lifting operations within the first working range.

[0046] Fixed-point operation conditions refer to the operation of the operating machinery performing lifting operations at a fixed point.

[0047] For example, when the first arm 31 is extended to 11m, the second arm 32 is extended to 9m. The angle between the first arm and the turntable 2 can be adjusted to not less than 80°, and the angle between the first arm and the second arm can be adjusted to not more than 45°. The working range of the telescopic arm 3 is between 3m and 9m to lift the heavy object B.

[0048] In one embodiment, the working machine has a loaded traveling condition. When the working machine is in the loaded traveling condition, the moving mechanism 1 can move in a state where the telescopic arm 3 hoists a heavy object B.

[0049] The loaded driving condition refers to the driving of the operating machinery under loaded state.

[0050] For example, when the first arm 31 is extended to 11m and the second arm 32 is extended to 9m, the operating machine can travel with the angle between the first arm and the turntable 2 being not less than 83°, the angle between the first arm and the second arm being not less than 15°, and the working range of the telescopic arm 3 being 3m.

[0051] In one embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The moving mechanism 1 includes a pitch changing mechanism 11 and two crawler frames 12. The two crawler frames are respectively arranged on both sides of the pitch changing mechanism along the pitch changing direction. The two crawler frames have a first position close to each other and a second position far away from each other along the pitch changing direction. When the working machine is in a loaded driving condition, the two crawler frames switch to the second position.

[0052] Here, by setting the crawler frame 12, it can adapt to the adverse geographical environment and has strong adaptability. By setting the pitch changing mechanism 11 and two crawler frames, the two crawler frames can be switched between the first position and the second position through the pitch changing mechanism.

[0053] In this way, under the loaded driving condition, by switching the two crawler frames 12 to the second position, the two crawler frames are moved away from each other in the pitch changing direction, which can improve the moving stability of the working machine and reduce the occurrence of rollover.

[0054] In one embodiment, please refer to Figure 1 When the working machine is in a no-load driving condition, the two crawler frames 12 are in the first position and the legs 4 are retracted.

[0055] In this way, under the no-load driving condition, the two crawler frames 12 are switched to the first position so that the two crawler frames are close to each other along the pitch change direction, which can reduce the turning radius and adapt to relatively harsh geographical environments.

[0056] In one embodiment, please refer to Figure 4 The operating machine has an outrigger operating condition. When the operating machine is in the outrigger operating condition, the telescopic arm 3 can perform hoisting operations within the second working range when the outrigger 4 is extended and supported on the ground.

[0057] The outrigger operation condition refers to the ability to perform hoisting operations in a state where the outriggers 4 are extended and supported on the ground.

[0058] Exemplarily, when the length of the first arm 31 is 11m and the length of the second arm 32 is 13m, operations can be carried out within the second working range, wherein the second working range is: the angle between the first arm and the turntable 2 can be adjusted to not less than 65°; the angle between the first arm and the second arm can be adjusted to not more than 10° or not more than 45°; when the angle between the first arm and the second arm is not more than 10°, when the telescopic arm 3 is hoisting a weight B of 5500kg, its working range can be adjusted between 3m and 10m, and the hoisting weight B can be 5500kg; when the angle between the first arm and the second arm is not more than 45°, when the telescopic arm is hoisting a weight B of 2400kg, its working range can be adjusted between 3m and 10m.

[0059] In one embodiment, please refer to Figure 5 and Figure 6 There are multiple legs 4, and the multiple legs are arranged at intervals along the circumferential direction of the rotation center A on the moving mechanism 1.

[0060] Exemplarily, the number of the legs 4 may be four, and the four legs are arranged on the moving mechanism 1 at intervals along the circumference of the rotation center A.

[0061] In this way, a plurality of outriggers 4 can be supported on the ground along the circumferential direction of the rotation center A, so that the operating machine can perform outriggers 4 under the condition of outriggers with load, thereby further improving the lifting stability of the operating machine.

[0062] In one embodiment, please refer to Figure 5 and Figure 6 The outrigger 4 is rotatably connected to the moving mechanism 1 , and the operating machine includes a swing cylinder 7 , which is arranged on the moving mechanism 1 and is used to drive the outrigger 4 to rotate in the circumferential direction.

[0063] Exemplarily, a mounting plate 13 is provided on the top of the moving mechanism 1, and the mounting plate is formed with a connecting portion 13a protruding outward. One end of the leg 4 is rotatably connected to the connecting portion, the cylinder barrel 71 of the swing cylinder is rotatably hinged to the mounting plate, and the telescopic rod 72 of the swing cylinder is rotatably hinged to the leg. The rotation axis of the cylinder barrel of the swing cylinder and the mounting plate and the rotation axis of the telescopic rod of the swing cylinder and the leg are parallel to the rotation center A, that is, the up and down direction.

[0064] In this way, the telescopic rod 72 of the swing cylinder can drive the supporting leg 4 to rotate around the rotation center A by extending and retracting, so as to better meet the needs of mountain operations.

[0065] In one embodiment, please refer to Figure 5 and Figure 6 There are multiple swing cylinders 7, and each swing cylinder is drivingly connected to the corresponding support leg 4.

[0066] Exemplarily, the number of the swing cylinders 7 may be four, and each swing cylinder is drivingly connected to the corresponding support leg 4 .

[0067] When the operating machine is not lifted, two of the four legs 4 form a group, the two groups of legs are spaced apart along the pitch changing direction, and the two legs in each group of legs are spaced apart along the first direction.

[0068] When the operating machine is hoisted, each swing cylinder 7 drives the corresponding leg 4 to rotate around the rotation center A to open the angle between the two legs in each group of legs, so that the four legs extend radially around the rotation center A.

[0069] In this way, on the one hand, a large span can be achieved, so that during the driving of the operating machinery, the legs 4 can be rotated according to the actual needs of the construction site to avoid obstacles, which can better adapt to the operating needs, with good working stability and strong adaptability; on the other hand, the four legs extend radially around the rotation center A. Compared with the H-shaped legs in the prior art, the legs in the radially extended embodiment can be 90° between adjacent legs to better carry the operating machinery and heavy objects B, so that the legs can be better extended and supported on the ground under the condition of loaded outriggers, and the lifting stability is good.

[0070] In one embodiment, please refer to Figures 5 to 9 The support leg 4 includes a rotating arm 41, a supporting tube 42 and a lifting cylinder 43. The rotating arm is rotatably connected to the moving mechanism 1, and the rotating arm includes a plurality of rotating joint arms, and the plurality of rotating joint arms can be extended and retracted in a direction perpendicular to the rotating axis thereof, and the swing cylinder 7 is drivingly connected to the rotating arm. The supporting tube is connected to the rotating arm, and a supporting portion 423a is formed in the supporting tube. The lifting cylinder is arranged in the supporting tube and contacts the supporting portion, and the telescopic cylinder can extend out of the supporting tube and be supported on the ground.

[0071] Exemplarily, the rotating arm 41 may include two rotating joint arms, namely a first rotating joint arm 411 and a second rotating joint arm 412, wherein the second rotating joint arm is telescopically located inside the first rotating joint arm, and the first rotating joint arm is rotatably connected to the connecting portion 13a; the telescopic rod 72 of the swing cylinder may be rotatably connected to the first rotating joint arm. The support cylinder 42 may be arranged at one end of the second rotating joint arm away from the first rotating joint arm along its telescopic direction. The support cylinder may be connected to the second rotating joint arm, and a support portion 423a is formed on the inner wall of the support cylinder. The lifting cylinder 43 may be arranged inside the support cylinder and in contact with the supporting portion, and the telescopic cylinder may extend out of the support cylinder and be supported on the ground, that is, when the lifting cylinder extends out of the support cylinder, the outer peripheral surface of the telescopic cylinder will always be in contact with the supporting portion.

[0072] In this way, the support tube 42 can provide a guide for the extension and retraction of the lifting cylinder 43, thereby improving the accuracy of the extension and retraction; on the other hand, the support portion 423a can withstand the huge pressure and extrusion force generated by the lifting cylinder during operation, so as to transfer the force to the support tube and the rotating arm 41, and provide effective support for the extension and retraction of the telescopic cylinder, thereby improving the carrying capacity and stability of the lifting cylinder to meet the working conditions of outriggers with load; on another hand, during the operation of the lifting cylinder, the lifting cylinder may be subjected to greater stress and deformation, and the setting of the support portion can effectively prevent the lifting cylinder from deformation and damage, thereby ensuring that the lifting cylinder can work normally; on another hand, the support portion can also reduce the leakage of hydraulic oil to a certain extent, thereby improving the sealing performance of the cylinder.

[0073] In one embodiment, the support portion 423 a is provided with lubricating oil to reduce the strain and scratch of the lifting cylinder 43 during the movement, so as to increase the service life of the lifting cylinder 43 .

[0074] In one embodiment, please refer to Figure 8 and Fig. 9 The telescopic rod 431 of the lifting cylinder is fixedly arranged in the support tube 42, and the outer peripheral surface of the cylinder tube 432 of the lifting cylinder is in contact with the support part 423a. The cylinder tube of the lifting cylinder can extend out of the support tube and be supported on the ground.

[0075] Illustratively, one end of the telescopic rod 431 of the lifting cylinder can be fixedly set on the top wall inside the support tube 42, and the cylinder barrel 432 of the lifting cylinder is sleeved outside the telescopic rod of the lifting cylinder. The outer peripheral surface of the cylinder barrel of the lifting cylinder is in contact with the support portion 423a, and the cylinder barrel of the lifting cylinder can extend out of the support tube and be supported on the ground. In other words, the lifting cylinder 43 is installed in an inverted manner so that the cylinder barrel of the lifting cylinder extends out of the support tube and is supported on the ground.

[0076] In this way, on the one hand, by extending the cylinder barrel 432 of the lifting cylinder and supporting it on the ground, an additional support point can be provided for the entire working machine and the heavy object B under the condition of loaded outriggers, thereby significantly enhancing the stability of the working machine; on the other hand, by extending the cylinder barrel of the lifting cylinder and supporting it on the ground, the cylinder barrel of the lifting cylinder can more effectively disperse and bear the load, thereby improving the carrying capacity of the working machine to meet the condition of loaded outriggers.

[0077] In one embodiment, please refer to Figures 7 to 9 The support cylinder 42 includes a sleeve 421, a support sleeve 422 and a support ring 423, and the sleeve is fixedly connected to the rotating arm 41. The support sleeve is supported and arranged at one end of the sleeve, and the support sleeve is arranged on the outer periphery of the cylinder barrel, and an annular groove 422a is formed in the support sleeve. The support ring is arranged in the annular groove, and a support portion 423a is formed on one side of the support ring facing the cylinder barrel 432 of the lifting cylinder.

[0078] Exemplarily, the sleeve 421 can be fixedly connected to the second rotating joint arm 412 to improve the structural strength between the sleeve and the rotating arm 41, and can improve the bearing capacity. A housing cavity is formed in the sleeve, and the housing cavity passes through the bottom end of the sleeve to form an opening. The telescopic rod 431 of the lifting cylinder can be connected to the top wall of the housing cavity, and the cylinder barrel 432 of the lifting cylinder can extend out of the sleeve through the opening. The support sleeve 422 is supported and arranged at one end of the sleeve near the opening, and an annular groove 422a is arranged in the support sleeve. The support ring is arranged in the annular groove. The support ring 423 is formed with a support portion 423a on one side of the cylinder barrel of the lifting cylinder along the inner and outer directions, and the part of the cylinder barrel of the lifting cylinder extending out of the opening contacts with the support portion.

[0079] In this way, when the cylinder barrel 432 of the lifting cylinder is extended, it contacts with the support part 423a, and can transfer the force exerted by the ground on the lifting cylinder 43 to the support sleeve 422 through the support ring 423. The support sleeve is in support and abutment with the sleeve 421, and then the force can be transferred to the sleeve, and then transmitted to the rotating arm 41 and the moving mechanism 1, so as to improve the carrying capacity of the operating machinery; on the other hand, the support ring can be arranged in the annular groove 422a, which can not only improve the connection stability between the support ring and the support sleeve, but also protect the support ring to a certain extent, thereby improving its service life.

[0080] In one embodiment, the sleeve 421 may be connected to the second rotating joint arm 412 by welding, so that the connection strength between the support tube 42 and the second rotating joint arm may be improved.

[0081] In this way, when the lifting cylinder 43 is extended, the force exerted by the ground on the cylinder barrel 432 of the lifting cylinder can be transmitted to the sleeve 421, and then transmitted to the rotating arm 41 and the moving mechanism 1, so as to improve the load performance of the operating machinery, so as to be able to perform the outrigger 4 operation under the loaded outrigger working condition with good stability.

[0082] In one embodiment, the projection area of ​​the sleeve 421 along the top-bottom direction is located within the projection area of ​​the support sleeve 422 .

[0083] In this way, when the lifting cylinder 43 is acted upon by the ground, it can better abut against and support the lower end of the sleeve 421 and transmit force, thereby achieving good stability.

[0084] In one embodiment, please refer to Figure 8 and Fig. 9 A socket 422b is formed at one end of the annular groove 422a along the top-bottom direction, the socket is communicated with the annular groove, and the support ring 423 is inserted into the annular groove from the socket.

[0085] Exemplarily, a socket 422b is formed at the bottom end of the annular groove 422a, and the socket is connected to the annular groove, and the support ring 423 can be inserted into the annular groove from the socket. In this way, disassembly and assembly are facilitated.

[0086] In one embodiment, please refer to Figure 8 and Fig. 9 The support cylinder 42 includes a cover plate 424 and a dustproof member 425. The cover plate is covered on the socket 422b, and the dustproof member is arranged in the annular gap between the cover plate and the cylinder barrel 432 of the lifting cylinder.

[0087] In this way, by covering the cover plate 424 on the socket 422b, the possibility of the support being damaged and falling off can be reduced, thereby improving the working stability of the support ring 423; by setting the dustproof part 425 in the annular gap between the cover plate and the cylinder barrel 432 of the lifting cylinder, not only can foreign matter such as dust be reduced from entering the annular groove 422a through the annular gap to affect the function of the support part 423a, but also the flow of hydraulic oil, lubricating oil, etc. out of the support cylinder 42 can be reduced.

[0088] In one embodiment, the cover plate 424 may be disposed on the support sleeve 422 by means of fasteners such as screws to cover the socket 422 b.

[0089] In one embodiment, the operating machine includes a hydraulic oil tank and a power device, the hydraulic oil tank is used to supply oil, and the power device is used to provide power. The hydraulic oil tank and the power device are respectively arranged on both sides of the turntable 2 along the pitch change direction.

[0090] In this way, by arranging the hydraulic oil tank and the power unit on both sides of the turntable 2 along the pitch change direction to act as counterweights, on the one hand, the stability of the entire vehicle of the operating machinery can be further improved; on the other hand, by using the hydraulic oil tank and the power unit as counterweights, the use of counterweight blocks can be reduced, and then the weight of the entire vehicle of the operating machinery can be reduced to achieve lightweight, which can not only reduce the damage of the operating machinery to the ground, but also increase its operating height and facilitate transfer transportation.

[0091] In one embodiment, please refer to Figure 2 The center of gravity G2 of the hydraulic oil tank, the center of gravity G3 of the power unit, and the center of gravity G4 of the turntable are all located on the side of the auxiliary telescopic cylinder away from the rotation center A along the second direction.

[0092] In this way, the hydraulic oil tank, the power unit and the turntable 2 can better play the role of counterweight, and the working stability of the operating machine can be further improved.

[0093] In one embodiment, please refer to Figure 2 When the second arm 32 is hoisting the weight B, the center of gravity G1 of the first arm is located on the side of the rotation center A away from the first arm 31 along the first direction.

[0094] That is, when the second arm 32 is hoisting the weight B, the center of gravity G1 of the first arm is located behind the rotation center A, so that the first arm 31 can play the role of a counterweight while serving as a support.

[0095] In this way, the working stability of the operating machinery can be further improved. Compared with operating machinery with the same lifting capacity in the prior art, the operating machinery provided by the present application has a high lifting height and is light in weight.

[0096] In one embodiment, the operating machine can first start the no-load driving condition, drive no-load to the destination, and then start the fixed-point operating condition to perform lifting operations within the first working range, and then start the loaded driving condition to lift the heavy object B and drive to the vicinity of the working site, and then start the loaded outrigger condition to extend the outrigger 4 and support it on the ground while the heavy object B is lifted, and finally start the outrigger operating condition to perform lifting and hoisting operations within the second working range.

[0097] In this way, the number of times the heavy object B is unloaded can be reduced, greatly improving the working efficiency.

[0098] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A working machine, characterized in that: It includes a moving mechanism, a turntable, a telescopic arm and outriggers; the turntable is arranged on the moving mechanism and can rotate around its rotation center; the telescopic arm is arranged on the turntable; the outriggers are telescopically arranged on the moving mechanism; the operating machine has a working condition of outriggers with load, and when the operating machine is in the working condition of outriggers with load, the outriggers can be extended and supported on the ground when the telescopic arms are hoisting heavy objects.

2. The working machine according to claim 1, characterized in that: The working machine has a loaded traveling working condition. When the working machine is in the loaded traveling working condition, the moving mechanism can move in a state where the telescopic arm hoists a heavy object.

3. The working machine according to claim 2, characterized in that: The moving mechanism includes a pitch changing mechanism and two crawler frames, the two crawler frames are respectively arranged on both sides of the pitch changing mechanism along the pitch changing direction, the two crawler frames have a first position close to each other and a second position far away from each other along the pitch changing direction, and when the working machine is in the loaded driving condition, the two crawler frames switch to the second position.

4. The working machine according to claim 1, characterized in that: There are multiple legs, and the multiple legs are arranged on the moving mechanism at intervals along the circumference of the rotation center.

5. The working machine according to claim 4, characterized in that: The supporting leg is rotatably connected to the moving mechanism, and the working machine comprises a swinging oil cylinder, which is arranged on the moving mechanism and is used to drive the supporting leg to rotate in a circumferential direction.

6. The working machine according to claim 5, characterized in that: The outrigger comprises a rotating arm, a supporting cylinder and a lifting cylinder; The rotating arm is rotatably connected to the moving mechanism, and the rotating arm includes a plurality of rotating joint arms, and the plurality of rotating joint arms can be extended and retracted in a direction perpendicular to the rotating axis. The swing cylinder is drive-connected to the rotating arm; the supporting tube is connected to the rotating arm, and a supporting portion is formed inside the supporting tube; the lifting cylinder is arranged inside the supporting tube and contacts with the supporting portion, and the telescopic cylinder can extend out of the supporting tube and be supported on the ground.

7. The working machine according to claim 6, characterized in that: The telescopic rod of the lifting cylinder is fixedly arranged in the supporting tube, the outer peripheral surface of the cylinder barrel of the lifting cylinder is in contact with the supporting part, and the cylinder barrel of the lifting cylinder can extend out of the supporting tube and be supported on the ground.

8. The working machine according to claim 7, characterized in that: The support cylinder comprises a sleeve, a support sleeve and a support ring; The sleeve is fixedly connected to the rotating arm; the support sleeve is supported and arranged at one end of the sleeve, the support sleeve is sleeved on the outer periphery of the cylinder barrel, and an annular groove is formed in the support sleeve; the support ring is arranged in the annular groove, and the support portion is formed on one side of the support ring facing the cylinder barrel of the lifting cylinder.

9. The working machine according to claim 8, characterized in that: A socket is formed at one end of the annular groove along the top and bottom direction, the socket is communicated with the annular groove, and the support ring is inserted into the annular groove from the socket.

10. The working machine according to claim 9, characterized in that: The support cylinder comprises a cover plate and a dustproof part. The cover plate is arranged on the socket, and the dustproof part is arranged in the annular gap between the cover plate and the cylinder barrel of the lifting cylinder.

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