Cantilever crane device and pumping equipment

Abstract

The utility model discloses an arm support device and pumping equipment, the arm support device comprises a plurality of knuckle arms, a conveying pipeline, a tail end hose, an extension arm, a first elbow pipe, a second elbow pipe and a locking assembly, the knuckle arms are sequentially and rotatably connected, the conveying pipeline is supported on the knuckle arms, one end of the first elbow pipe is fixedly connected to the conveying pipeline, and the other end of the first elbow pipe is fixedly connected to the second elbow pipe. One end of the second bent pipe is rotatably connected to the other end of the first bent pipe, the other end of the second bent pipe is fixedly connected to the extension arm, and the tail end hose is fixedly connected to the extension arm; and the second bent pipe is locked or loosened from the tail section arm through a locking assembly. According to the arm support device and the pumping equipment, the arm support can be lengthened, the material distribution range can be enlarged, the arm can be unfolded and folded within the range that the included angle between the tail section arm and the lengthened arm ranges from-180 degrees to 180 degrees, and various special postures of pumping can be achieved; components such as a connecting rod and an oil cylinder are not needed, the weight is light, and therefore the length-to-weight ratio of pumping equipment can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pumping, in particular to an arm device and pumping equipment. Background Art

[0002] Concrete pumping equipment and other engineering machinery have been widely used in construction operations. The function of concrete pumping equipment is to deliver concrete to the pouring location through a pipeline. It usually includes a multi-section boom and a hose installed at the end of the boom. During construction operations, concrete is transported to the end hose through the boom delivery pipe and finally transported to the location where it needs to be poured.

[0003] Please refer to Figure 1 A boom includes a conveying pipe 90, a terminal arm 91, a terminal hose 93, a bend 95, a first pipe clamp 97, and a second pipe clamp 98. One end of the bend 95 is connected to the conveying pipe 90 supported by the terminal arm 91 through the first pipe clamp 97, and the other end is fixedly connected to the terminal hose 93 through the second pipe clamp 98. The bend 95 can rotate relative to the first pipe clamp 97, thereby driving the terminal hose to rotate. The first pipe clamp 97 includes a base, which is fixedly connected to the terminal arm 91. The terminal hose 93 naturally droops under the action of gravity, and the material distribution range of the boom is limited. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an arm device and a pumping device, so that the arm device has a larger distribution range.

[0005] The utility model provides an arm device, comprising a plurality of segment arms, a conveying pipeline, a terminal hose, an extension arm, a first elbow, a second elbow and a locking assembly which are rotatably connected in sequence, the plurality of segment arms comprising a penultimate segment arm and a terminal arm hinged to the penultimate segment arm, the conveying pipeline is supported on the segment arm, one end of the first elbow is fixedly connected to the conveying pipeline, one end of the second elbow is rotatably connected to the other end of the first elbow, the other end of the second elbow is fixedly connected to the extension arm, the terminal hose is fixedly connected to an end of the extension arm away from the second elbow, the rotation axis of the second elbow is perpendicular to, obliquely intersecting with, skewly perpendicular to or skewly perpendicular to the terminal arm, and the extension arm intersects with the rotation axis of the second elbow; the second elbow is connected to the first elbow through the locking assembly, and the second elbow is locked or released to the terminal arm through the locking assembly.

[0006] Optionally, the extension arm is substantially parallel to the end arm, and the rotation axis of the second bend pipe is perpendicular or skewed to the end arm.

[0007] Optionally, the first elbow includes a first port connected to the conveying pipe and a second port connected to the second elbow, and the axial direction of the first port is substantially perpendicular to the axial direction of the second port; the second elbow includes a third port connected to the first elbow and a fourth port connected to the extension arm, and the axial direction of the third port is substantially perpendicular to the axial direction of the fourth port, and the axial directions of the second port and the third port coincide.

[0008] Optionally, a rotation axis of the last arm relative to the penultimate arm is parallel to a rotation axis of the second elbow.

[0009] Optionally, the arm device also includes a first connecting member, a second connecting member, a third connecting member and a fourth connecting member, the first connecting member fixedly connects the conveying pipeline and the first bend, the second connecting member rotatably connects the first bend and the second bend, the third connecting member fixedly connects the extension arm and the second bend, and the fourth connecting member connects the extension arm and the end hose.

[0010] Optionally, the locking assembly includes a pipe sleeve, a brake disc, a first brake block, a second brake block and a brake driver, one end of the pipe sleeve is rotatably connected to the first bent pipe, and the other end is fixedly connected to the second bent pipe, the brake disc is fixedly arranged relative to the pipe sleeve, the second brake block is arranged corresponding to the first brake block, and the first brake block and the second brake block can move relative to each other so as to approach or move away from each other, the brake disc extends into a position between the first brake block and the second brake block, and the brake driver is connected to the second brake block and the first brake block for relative movement.

[0011] Optionally, the brake drive component includes a brake caliper body and a movable part, the first brake pad is arranged on the brake caliper body, the second brake pad is arranged on the movable part, and the brake caliper body and the movable part are both movably arranged; the brake caliper body is movably connected to the terminal arm, and a accommodating cavity is opened on the brake caliper body, and the movable part is movably arranged in the accommodating cavity, and the outer side wall of the movable part cooperates with the inner side wall of the accommodating cavity, and an oil cavity is formed between the movable part and the bottom of the accommodating cavity, and the oil cavity is used to accommodate hydraulic oil; the brake caliper body includes a spaced base and a cantilever, the accommodating cavity is arranged on the base, the first brake pad is arranged at the bottom of the cantilever, and part of the movable part and the second brake pad are located between the base and the cantilever.

[0012] Optionally, a guide hole is provided on the end arm, and a guide pin is connected to the brake caliper body and can be movably inserted into the guide hole.

[0013] Optionally, the first angle between the terminal arm and the extension arm is within the range of -180° to 180°.

[0014] The utility model also provides a pumping device, comprising the above-mentioned arm support device.

[0015] In the boom device and pumping equipment provided by the embodiment of the utility model, by making the second bend pipe rotatably connected to the first bend pipe, the extension arm can be rotated relative to the end arm, the boom can be extended, the material distribution range can be increased, and the angle between the end arm and the extension arm can be achieved in the range of -180° to 180°, thereby realizing a variety of special postures for pumping; and no connecting rods, cylinders and other components are required, the weight is relatively light, and thus the length-to-weight ratio of the pumping equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The figure is a schematic diagram of the structure of a boom.

[0018] Figure 2 It is a schematic diagram of at least a portion of the structure of an arm support device according to an embodiment of the utility model.

[0019] Figure 3 for Figure 2 A partial enlarged view of the arm assembly shown.

[0020] Figure 4 for Figure 2 A schematic structural diagram of the locking assembly of the arm device shown in FIG. 1 is in a locked state.

[0021] Figure 5 for Figure 2 A schematic structural diagram of the arm device shown in FIG. 1 , wherein the locking assembly is in a released state.

[0022] Figure 6 for Figure 2 The schematic diagram of the state of the second bend pipe of the arm support device after being rotated to a certain angle is shown.

[0023] Figure 7 for Figure 2 The schematic diagram of the arm support device shown is in the first pumping working condition.

[0024] Figure 8 for Figure 2 The schematic diagram of the arm support device shown is in the second pumping working condition.

[0025] Fig. 9 for Figure 2 The schematic diagram of the arm support device shown is in the third pumping working condition.

[0026] Fig.10a for Figure 2 Schematic diagram of the angle between the end arm and the extension arm of the boom device shown.

[0027] Fig.10b for Figure 2 Schematic diagram of the inclination angle of the penultimate boom section of the boom assembly shown.

[0028] Fig.10c for Figure 2 A schematic diagram of an inclination angle of the end arm of the boom device shown.

[0029] Fig.10d for Figure 2 A schematic diagram of another inclination angle of the end arm of the boom device shown.

[0030] Fig.10e for Figure 2 Schematic diagram of the inclination angle of the extended arm of the boom device shown.

[0031] Fig.11a for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 90°.

[0032] Fig.11b for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 45°.

[0033] Fig.11c for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 0°.

[0034] Fig.11d for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is -45°.

[0035] Fig.11e for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is -90°.

[0036] Fig.12a for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is -90°.

[0037] Figure 12b for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is -135°.

[0038] Fig.12c for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 180° (or -180°).

[0039] Fig.12d for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 135°.

[0040] Fig.12e for Figure 2 The schematic diagram shows that the angle between the end arm and the extension arm of the boom device is 90°. DETAILED DESCRIPTION

[0041] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0044] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0045] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0046] The utility model provides an arm device, please refer to Figure 2The arm device provided in one embodiment of the utility model comprises a plurality of segmented arms, a conveying pipeline 13, a terminal hose 15, an extension arm 17, a first elbow 19 and a second elbow 21 which are rotatably connected in sequence, and the plurality of segmented arms include a terminal arm 11. The conveying pipeline 13 is supported on the segmented arm. One end of the first elbow 19 is fixedly connected to the conveying pipeline 13, one end of the second elbow 21 is rotatably connected to the other end of the first elbow 19, the other end of the second elbow 21 is fixedly connected to the extension arm 17, and the terminal hose 15 is fixedly connected to the end of the extension arm 17 away from the second elbow 21. The rotation axis of the second elbow 21 is perpendicular to the terminal arm 11, obliquely intersecting, perpendicular to the skew plane or skew plane, and the extension arm 17 intersects with the rotation axis of the second elbow 21, that is, the rotation axis of the second elbow 21 is not parallel to the terminal arm 11, and the rotation axis of the extension arm 17 is not parallel to the second elbow 21.

[0047] In the arm device of this embodiment, by making the second bend pipe rotatably connected to the first bend pipe, the extension arm can be rotated relative to the end arm, the arm can be lengthened, the material distribution range can be increased, and the angle between the end arm and the extension arm can be expanded and retracted within the range of -180° to 180°, thereby realizing a variety of special postures for pumping; and no connecting rods, cylinders and other components are required, the weight is relatively light, and thus the length-to-weight ratio of the pumping equipment can be improved.

[0048] In this embodiment, the extension arm 17 is substantially parallel to the end arm 11, and the rotation axis of the second curved pipe 21 is perpendicular or skewed to the end arm 11. The substantially parallel here means that the extension arm 17 can have a slight inclination angle relative to the end arm 11.

[0049] In this embodiment, the first elbow 19 includes a first port connected to the delivery pipe 13 and a second port connected to the second elbow 21, and the axial direction of the first port is substantially perpendicular to the axial direction of the second port. The second elbow 21 includes a third port connected to the first elbow 19 and a fourth port connected to the extension arm 17, and the axial direction of the third port is substantially perpendicular to the axial direction of the fourth port. The axial directions of the second port and the third port coincide.

[0050] In this embodiment, the boom device further comprises the penultimate boom 10, and the rotation axis of the last boom 11 relative to the penultimate boom 10 is parallel to the rotation axis of the second elbow 21. Of course, the rotation axis of the last boom 11 relative to the adjacent boom may not be parallel to the rotation axis of the second elbow 21.

[0051] In this embodiment, the arm device further includes a first connecting member 23, a second connecting member 25, a third connecting member 27 and a fourth connecting member 29. The first connecting member 23 is fixedly connected to the conveying pipeline 13 and the first elbow 19, the second connecting member 25 is rotatably connected to the first elbow 19 and the second elbow 21, the third connecting member 27 is fixedly connected to the extension arm 17 and the second elbow 21, and the fourth connecting member 29 is connected to the extension arm 17 and the end hose 15. Specifically in this embodiment, the first connecting member 23, the second connecting member 25 and the fourth connecting member 29 can be pipe clamps, the third connecting member 27 can be a bolt, flanges are respectively provided on the extension arm 17 and the second elbow 21, and the third connecting member 27 locks the flanges on the extension arm 17 and the second elbow 21.

[0052] In this embodiment, the delivery pipeline 13 is connected to each boom section including the last boom section through the support member 31 .

[0053] In this embodiment, the first elbow 19 and the delivery pipe 13 are independent components, and the second elbow 21 and the extension arm 17 are independent components. It can be understood that in other embodiments, the first elbow 19 can also be integrally formed at one end of the delivery pipe 13; the second elbow 21 can also be integrally formed at one end of the extension arm 17.

[0054] In this embodiment, the arm device further includes a locking assembly 33, the second curved pipe 21 is connected to the first curved pipe 19 through the locking assembly 33, and the second curved pipe 21 is locked or released to the end arm 11 through the locking assembly 33. Specifically, when the locking assembly 33 releases the end arm 11, the extension arm 17 can rotate with the second curved pipe 21 under the action of gravity.

[0055] For details, please refer to Figure 3 The locking assembly 33 includes a sleeve 331, a brake disc 333, a first brake block 335, a second brake block 337 and a brake driver. One end of the sleeve 331 is rotatably connected to the first elbow 19, and the other end is fixedly connected to the second elbow 21. The brake disc 333 is fixedly arranged relative to the sleeve 331. The second brake block 337 is arranged corresponding to the first brake block 335, and the first brake block 335 and the second brake block 337 can move relative to each other, so as to approach or move away from each other. The brake disc 333 extends into the position between the first brake block 335 and the second brake block 337. The brake driver is connected to the second brake block 337 to drive the second brake block 337 to move relative to the first brake block 335. In this embodiment, both the first brake block 335 and the second brake block 337 can be moved; it can be understood that only one of the first brake block 335 and the second brake block 337 can be moved to achieve the ability to clamp or release the brake disc 333.

[0056] Specifically, the first curved pipe 19 is fixed in the second connecting member 25 , and the pipe sleeve 331 is rotatably sleeved in the second connecting member 25 .

[0057] Specifically, a first flange portion 3311 is provided at one end of the pipe sleeve 331, and a second flange portion 211 is provided at one end of the second elbow 21 connected to the locking assembly 33. The first flange portion 3311 and the second flange portion 211 are fixedly connected by a locking piece.

[0058] Specifically, the brake disc 333 is fixedly connected to the first flange portion 3311 and the second flange portion 211 through a locking piece. Specifically, the brake disc 333 can be annular, and it can be understood that the brake disc 333 can also be annular with a spacer protrusion on the outer edge, as long as the brake disc 333 can extend into the position between the first brake block 335 and the second brake block 337 at multiple positions.

[0059] Specifically, the brake driver includes a brake caliper body 341 and a movable portion 343 , a first brake block 335 is disposed on the brake caliper body 341 , and a second brake block 337 is disposed on the movable portion 343 . Both the brake caliper body 341 and the movable portion 343 are movably disposed.

[0060] More specifically, the brake caliper body 341 is movably connected to the end arm 11, and a receiving chamber 3411 is provided on the brake caliper body 341. The movable part 343 is movably arranged in the receiving chamber 3411, and the outer wall of the movable part 343 cooperates with the inner wall of the receiving chamber 3411, so that the movable part 343 forms a piston structure. An oil chamber is formed between the movable part 343 and the bottom of the receiving chamber 3411, and the oil chamber is used to accommodate hydraulic oil. An oil inlet pipe connected to the oil chamber is provided on the brake caliper body 341. More specifically, the brake caliper body 341 includes a spaced base 3412 and a cantilever 3413, the receiving chamber 3411 is provided on the base 3412, the first brake block 335 is provided at the bottom of the cantilever 3413, and part of the movable part 343 and the second brake block 337 are located between the base 3412 and the cantilever 3413.

[0061] Specifically, a guide hole is formed on the end arm 11, and a guide pin 3415 is connected to the brake caliper body 341 and can be moved into the guide hole to guide the movement of the brake caliper body 341. Specifically, there can be a plurality of guide pins 3415.

[0062] Specifically, the locking assembly 33 further includes a shaft sleeve 345 sleeved outside the pipe sleeve 331, the pipe sleeve 331 can rotate relative to the shaft sleeve 345, and the shaft sleeve 345 is fixedly connected to the end arm 11. By providing the shaft sleeve 345, the rotation of the pipe sleeve 331 can be made more stable.

[0063] Please refer to Figure 4When the second elbow 21 needs to be locked to the end arm 11 through the locking assembly 33, oil is supplied to the oil chamber through the oil inlet pipe, the oil pressure in the oil chamber increases, the oil pressure acts on the bottom of the oil chamber to push the brake caliper body 341 downward, and the oil pressure acts on the bottom of the movable part 343 to push the movable part 343 upward, thereby clamping the brake disc 333 between the first brake block 335 and the second brake block 337 to achieve locking. When locked, the pipe sleeve 331 and the second elbow 21 cannot rotate, so that the relative angle between the extension arm 17 and the end arm 11 is fixed. Please refer to Figure 5 When the second bend pipe 21 and the end arm 11 need to be loosened, the oil in the oil chamber is discharged through the oil inlet pipe, and the oil pressure in the oil chamber is reduced, so that the brake caliper body 341 moves upward and the movable part 343 moves downward, thereby the first brake block 335 and the second brake block 337 loosen the brake disc 333, and the pipe sleeve 331 and the second bend pipe 21 can rotate freely relative to the end arm 11 and the first bend pipe 19. Please refer to Figure 6 When the second curved pipe 21 rotates, the extension arm 17 also rotates, so that the angle between the extension arm 17 and the end arm 11 changes. After the second curved pipe 21 and the extension arm 17 are rotated to a required angle, they can be locked by the locking assembly 33.

[0064] In this embodiment, the multiple boom sections also include the penultimate boom section 10 hinged to the terminal boom section 11, and the penultimate boom section 10, the terminal boom section 11 and the extended boom section 17 are respectively provided with inclination detection elements 37 to respectively detect the inclination angles of the i-th boom section 10, the terminal boom section 11 and the extended boom section 17 (the inclination angle in this article refers to the angle relative to the horizontal plane or the ground).

[0065] In this embodiment, the arm device includes a first material distribution working condition, a second material distribution working condition and a third material distribution working condition. Figure 7 , the arm device is in the first material distribution working condition, the locking assembly 33 releases the second elbow 21, the end arm 11 is arranged basically horizontally, and the extension arm 17 and the end hose 15 droop naturally; please refer to Figure 8 , the arm device is in the second material distribution working condition, the locking assembly 33 locks the second elbow 21, the end arm 11 is basically arranged vertically, and the extension arm 17 and the end hose 15 are arranged vertically; please refer to Fig. 9In the third material distribution working condition, the arm device locks the second bend 21 with the locking assembly 33, the end arm 11 and the extension arm 17 are arranged substantially horizontally, and the extension arm 17 and the end arm 11 are respectively located at two opposite sides of the second bend 21. The substantially parallel arrangement mentioned herein may include a relatively small range of inclination relative to the horizontal direction, for example, within 30°; the substantially vertical arrangement may include a relatively small range of inclination relative to the vertical direction, for example, within 30°. In the first material distribution working condition and the second material distribution working condition, the arm device is in a normal material distribution state, and in the third material distribution working condition, the arm device is in an extended material distribution state, and the material distribution range is increased.

[0066] In the arm device of this embodiment, please refer to Fig.10a The angle between the end arm 11 and the extension arm 17 is the first angle D10. When the extension arm 17 rotates counterclockwise N from the horizontal direction, the first angle D10 is a positive angle. When the extension arm 17 rotates clockwise S from the horizontal direction, the first angle D10 is a negative angle. Please refer to Fig.10b The angle between the penultimate boom 10 and the horizontal direction is the second angle D2. When the penultimate boom 10 rotates counterclockwise N from the horizontal direction, the second angle D2 is a positive angle. When the penultimate boom 10 rotates clockwise S from the horizontal direction, the second angle D2 is a negative angle. The second angle D2 can be measured by the inclination detection element 37 on the penultimate boom 10. Please refer to Fig.10c and Fig.10d The angle between the end arm 11 and the horizontal direction is the third angle D1. When the end arm 11 rotates counterclockwise N from the horizontal direction, the third angle D1 is a positive angle. When the end arm 11 rotates clockwise S from the horizontal direction, the third angle D1 is a negative angle. The third angle D1 can be measured by the inclination detection element 37 on the end arm 11. Please refer to Fig.10e The angle between the extended arm 17 and the horizontal direction is a fourth angle D0. When the extended arm 17 rotates counterclockwise N from the horizontal direction, the fourth angle D0 is a positive angle. When the extended arm 17 rotates clockwise S from the horizontal direction, the fourth angle D0 is a negative angle. The fourth angle D0 can be measured by the inclination detection element 37 on the extended arm 17.

[0067] The arm device of this embodiment can control its posture by the following method, so that the end arm 11 and the extension arm 17 can be adjusted within the range of -180° to 180°. The utility model controls the first angle D10 between the end arm 11 and the extension arm 17 to be a preset angle A1. When A1 is within the range of -90° to 90°, it is achieved by the following method:

[0068] S11, controlling the locking assembly 33 to lock.

[0069] S13, controlling the penultimate boom 10 to extend to a second included angle D2 of 0°.

[0070] S15, control the end arm 11 to extend to a third angle D1, wherein the third angle D1 is -90° minus the preset angle A1 (ie D1 = -90° - A1). At this time, the preset angle A1 is the angle between the end arm 11 and the extension arm 17 to be reached, which is known.

[0071] S17, control the locking assembly 33 to release, so that the extension arm 17 and the second elbow 21 rotate to a fourth angle D0 of -90°, and then control the locking assembly 33 to lock. At this time, the first angle D10 between the end arm 11 and the extension arm 17 reaches the required preset angle A1.

[0072] Please refer to Fig.11a When the preset angle A1 is 90°, first control the penultimate arm 10 to extend to the second angle D2 of 0°, then control the end arm 11 to extend to D1 = -90° - A1 = -90° -90° = -180°, and then make the extension arm 17 naturally droop to D0 = -90° under the action of gravity. At this time, the first angle D10 between the end arm 11 and the extension arm 17 is the required 90°. Please refer to Figures 11b to 11e , showing the states where the preset angles A1 are 45°, 0°, -45°, and -90° respectively, which can be achieved by executing the above steps S11 to S17, and will not be repeated here.

[0073] The first angle D10 between the end arm 11 and the extension arm 17 is controlled to be a preset angle A1. When A1 is within the range of -180° to -90°, the following method is used:

[0074] S31, controlling the locking assembly 33 to lock, and obtaining the current value A2 of the second angle D2 of the penultimate boom 10 at this time.

[0075] S33, controlling the arm end section 11 to extend to a third angle D1 equal to the current value A2.

[0076] S35, control the penultimate boom 10 to extend to a second angle D2, where the second angle D2 is -90° minus the preset angle A1 (ie D2 = -90° - A1). At this time, the preset angle A1 is the angle between the last boom 11 and the extension arm 17 that needs to be reached, and is known.

[0077] S37, control the locking assembly 33 to release, so that the extension arm 17 and the second elbow 21 rotate to a fourth angle D0 of -90°, and then control the locking assembly 33 to lock. At this time, the end arm 11 and the extension arm 17 have reached the required preset angle A1.

[0078] The first angle D10 between the end arm 11 and the extension arm 17 is controlled to be a preset angle A1. When A1 is within the range of 90° to 180°, the following method is used:

[0079] S51, controlling the locking assembly 33 to lock, and obtaining the current value A2 of the second angle D2 of the penultimate boom 10 at this time.

[0080] S53, controlling the arm end section 11 to extend to a third angle D1 equal to the current value A2.

[0081] S55, control the penultimate boom 10 to extend to a second angle D2, where the second angle D2 is 270° minus the preset angle A1 (ie, D2 = 270° - A1). At this time, the preset angle A1 is the angle between the last boom 11 and the extension arm 17 that needs to be reached, and is known.

[0082] S57, control the locking assembly 33 to release, so that the extension arm 17 and the second elbow 21 rotate to a fourth angle D0 of -90°, and then control the locking assembly 33 to lock. At this time, the end arm 11 and the extension arm 17 have reached the required preset angle A1.

[0083] Please refer to Figures 12a to 11e , showing the required first angle D10 is respectively -90°, -135°, 180°, 135°, and 90°, which can be achieved by executing the above steps S31 to S37 or S51 to S57, and will not be repeated here.

[0084] It can be understood that for critical points such as 90° and -90°, two different methods can be used to control the boom device to achieve the corresponding angles.

[0085] The utility model also provides a pumping device, comprising the above-mentioned arm device. Specifically, the pumping device can be a concrete pump truck, a wet spraying machine or a concrete placing machine.

[0086] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A boom device, characterized in that: The invention comprises a plurality of segmented arms, a conveying pipeline (13), a terminal hose (15), an extension arm (17), a first curved pipe (19), a second curved pipe (21) and a locking assembly (33) which are rotatably connected in sequence, wherein the plurality of segmented arms comprises a penultimate segmented arm (10) and a terminal segmented arm (11) hinged to the penultimate segmented arm (10), the conveying pipeline (13) is supported on the segmented arm, one end of the first curved pipe (19) is fixedly connected to the conveying pipeline (13), one end of the second curved pipe (21) is rotatably connected to the other end of the first curved pipe (19), and the second curved pipe (21) is The other end of the extension arm (17) is fixedly connected to the extension arm (17), the terminal hose (15) is fixedly connected to one end of the extension arm (17) away from the second curved pipe (21), the rotation axis of the second curved pipe (21) is perpendicular to, obliquely intersecting with, skewly perpendicular to or skewly intersecting with the terminal arm (11), and the rotation axis of the extension arm (17) and the second curved pipe (21) intersect; the second curved pipe (21) is connected to the first curved pipe (19) through the locking assembly (33), and the second curved pipe (21) is locked or released to the terminal arm (11) through the locking assembly (33).

2. The arm device according to claim 1, characterized in that: The extension arm (17) is substantially parallel to the end arm (11), and the rotation axis of the second curved pipe (21) is perpendicular or skewed to the end arm (11).

3. The arm device according to claim 2, characterized in that: The first curved pipe (19) comprises a first port connected to the conveying pipe (13) and a second port connected to the second curved pipe (21), and the axial direction of the first port is substantially perpendicular to the axial direction of the second port; the second curved pipe (21) comprises a third port connected to the first curved pipe (19) and a fourth port connected to the extension arm (17), and the axial direction of the third port is substantially perpendicular to the axial direction of the fourth port, and the axial directions of the second port and the third port coincide.

4. The arm device according to claim 1, characterized in that: The rotation axis of the last arm (11) relative to the penultimate arm (10) is parallel to the rotation axis of the second curved pipe (21).

5. The arm device according to claim 1, characterized in that: The arm device also includes a first connecting member (23), a second connecting member (25), a third connecting member (27) and a fourth connecting member (29), wherein the first connecting member (23) fixedly connects the conveying pipeline (13) and the first curved pipe (19), the second connecting member (25) rotatably connects the first curved pipe (19) and the second curved pipe (21), the third connecting member (27) fixedly connects the extension arm (17) and the second curved pipe (21), and the fourth connecting member (29) connects the extension arm (17) and the terminal hose (15).

6. The arm device according to claim 1, characterized in that: The locking assembly (33) comprises a sleeve (331), a brake disc (333), a first brake block (335), a second brake block (337) and a brake drive member. One end of the sleeve (331) is rotatably connected to the first curved pipe (19), and the other end is fixedly connected to the second curved pipe (21). The brake disc (333) is fixedly arranged relative to the sleeve (331). The second brake block (337) is arranged corresponding to the first brake block (335). The first brake block (335) and the second brake block (337) can move relative to each other so as to approach or move away from each other. The brake disc (333) extends into a position between the first brake block (335) and the second brake block (337). The brake drive member is connected to the second brake block (337) and the first brake block (335) to move relative to each other.

7. The arm device according to claim 6, characterized in that: The brake driving member comprises a brake caliper body (341) and a movable part (343), wherein the first brake block (335) is arranged on the brake caliper body (341), and the second brake block (337) is arranged on the movable part (343), and the brake caliper body (341) and the movable part (343) are both movably arranged; the brake caliper body (341) is movably connected to the end arm (11), and a receiving cavity (3411) is provided on the brake caliper body (341), and the movable part (343) is movably arranged in the receiving cavity (3411), and the movable part (343) is movably arranged in the receiving cavity (3411), and the movable part (343) is movable in the receiving cavity (3411). The outer wall cooperates with the inner wall of the accommodating cavity (3411), and an oil chamber is formed between the movable part (343) and the bottom of the accommodating cavity (3411), and the oil chamber is used to accommodate hydraulic oil; the brake caliper body (341) includes a spaced base (3412) and a cantilever (3413), the accommodating cavity (3411) is arranged on the base (3412), the first brake block (335) is arranged at the bottom of the cantilever (3413), and part of the movable part (343) and the second brake block (337) are located between the base (3412) and the cantilever (3413).

8. The arm device according to claim 7, characterized in that: The end arm (11) is provided with a guide hole, and the brake caliper body (341) is connected with a guide pin (3415) which can move and extend into the guide hole.

9. The boom device according to any one of claims 1 to 4, characterized in that: The first included angle (D10) between the end arm (11) and the extension arm (17) is within the range of -180° to 180°.

10. A pumping device, characterized in that: It comprises the arm device as described in any one of claims 1-9.

Images