CN211594830U - Suspension arm structure and lifting crane - Google Patents

Suspension arm structure and lifting crane Download PDF

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Publication number
CN211594830U
CN211594830U CN201922042120.9U CN201922042120U CN211594830U CN 211594830 U CN211594830 U CN 211594830U CN 201922042120 U CN201922042120 U CN 201922042120U CN 211594830 U CN211594830 U CN 211594830U
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China
Prior art keywords
arm
boom
cantilever
target
telescopic
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CN201922042120.9U
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Chinese (zh)
Inventor
刘添
李保忠
叶海斌
刘辉
毛旭东
刘畅
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China Nuclear Industry Maintenance Co Ltd
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China Nuclear Industry Maintenance Co Ltd
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Priority to CN201922042120.9U priority Critical patent/CN211594830U/en
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Abstract

The utility model belongs to nuclear power overhauls the tool equipment field, especially relates to a davit structure and lift crane. The davit structure is used for drawing the target object in the preset position or puts in the target object to preset position, and its characterized in that, the davit structure includes: the suspension arm mechanism comprises a vertical arm with one end connected with an external structural member, a telescopic arm connected with the other end of the vertical arm and extending towards a preset position, and a supporting arm connected with the vertical arm and extending towards a direction departing from the preset position, a target object is hung at the free end of the telescopic arm, and the driving mechanism is arranged on the supporting arm and used for descending the target object to the preset position or lifting the target object from the preset position. The utility model discloses a set up support arm and flexible arm respectively in the both sides of founding the arm, and desilting pump and actuating mechanism set up respectively on flexible arm and support arm, are favorable to founding the arm like this and keep three balanced to the stability of founding the arm in the course of the work has been improved.

Description

Suspension arm structure and lifting crane
Technical Field
The utility model belongs to nuclear power overhauls the tool equipment field, especially relates to a davit structure and lift crane.
Background
At present, the crane operation mainly shows the aspects of reducing the heavy physical labor of workers, accelerating the construction and operation progress, improving the labor productivity, reducing the construction and operation cost, improving the quality and the like.
The crane completes cargo handling or equipment installation operation in a repeated and cyclic manner. One lift cycle includes: grabbing the cargo, lifting the cargo, moving horizontally, lowering the cargo and unloading the cargo, and then returning the empty spreader to the original place.
Currently, a dredging pump is used to lower the sewage chamber to extract sludge and wastewater in the sewage chamber. After the dredging pump finishes the pumping work, the dredging pump is lifted out of the underground water chamber. In the lifting or falling process of the dredging pump, a suspension arm structure is used for operation and control. Therefore, the stability of the suspension arm structure needs to be kept, at present, the suspension arm structure comprises a vertical arm and a telescopic arm, one end of the telescopic arm is connected with the vertical arm, the dredging pump is suspended at the other end of the telescopic arm, and the driving mechanism is arranged at the other end of the telescopic arm, so that the dredging pump is driven to ascend or descend.
However, the arrangement of the dredging pump and the driving mechanism on the telescopic boom of the boom structure is not favorable for the vertical boom to keep the gravity center balance, thereby being not favorable for the boom structure to keep stable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a davit structure aims at solving the problem that how to improve davit structural stability.
The utility model provides a davit structure for follow in the predetermined position extract the target object or to predetermined position puts in the target object, the davit structure includes: davit mechanism and actuating mechanism, davit mechanism includes that one end is connected the outer structure and stands the arm, is connected stand the arm other end and court the preset position extends the flexible arm that sets up and is connected stand the arm and face and deviate from the support arm that preset position direction extended the setting, the free end of flexible arm is hung and is hung the target object, actuating mechanism set up in the support arm and be used for to preset position descends the target object or follow preset position promotes the target object.
The technical effects of the utility model are that: through setting up support arm and flexible arm respectively in the both sides of founding the arm, and desilting pump and actuating mechanism set up respectively on flexible arm and support arm, are favorable to founding the arm like this and keep three balanced to the stability of founding the arm in the course of the work has been improved.
Drawings
Fig. 1 is a three-dimensional structure diagram of a lifting crane provided in an embodiment of the present invention;
FIG. 2 is an exploded view of the lift truck of FIG. 1;
FIG. 3 is an exploded view of the boom structure of FIG. 2;
FIG. 4 is an exploded view of the counterweight structure of FIG. 2;
fig. 5 is an exploded view of the chassis structure of fig. 2.
The correspondence between reference numbers and names in the drawings is as follows:
100. lifting the crane; 200. a boom structure; 300. a counterweight structure; 400. a chassis structure; 10. a boom mechanism; 11. erecting an arm; 12. a telescopic arm; 13. a support arm; 20. a drive mechanism; 21. a drive base; 22. a winding assembly; 23. a driver; 221. a wire rope; 222. a reel; 223. a hook; 31. a second pulley; 32. a first pulley; 33. a power cord pulley; 121. a cantilever beam; 122. a sliding beam; 14. a first angle adjustment mechanism; 15. a second angle adjustment mechanism; 131. a limiting hole; 40. a first adjustment assembly; 41. A hand wheel disc; 42. a lead screw; 45. a second adjustment assembly; 44. a counterweight handle; 43. an adjusting arm; 48. an adjustment hole; 46. a weight box; 47. a support wheel; 132. a guide groove; 124. positioning holes; 123. a locking hole; 50. A chassis mechanism; 51. a support arm; 52. a base plate; 61. a driven wheel; 62. a steering wheel; 60. a wheel mechanism; 80. a steering mechanism; 81. a worm gear; 82. a worm; 83. a steering wheel; 70. an anti-roll mechanism; 75. an anti-roll leg; 71. a steering handle; 72. a support bar; 74. a support pad; 73. reinforcing the nut; 76. an electrical control mechanism; 90. a safety protection frame; 91. a column; 92. a guard plate;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "vertical", "parallel", "bottom", "angle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship.
Referring to fig. 1 to 3, an embodiment of the present invention provides a lifting crane 100 for extracting a target from a predetermined position or delivering the target to the predetermined position. Specifically, in this embodiment, a dredging pump is put into or taken out from the underground water chamber, an inlet of the underground water chamber is circularly arranged, and the dredging pump is used for cleaning sludge and wastewater by being put into the underground water chamber.
The lifting crane 100 includes: an undercarriage structure 400, a boom structure 200, and a counterweight structure 300. The chassis structure 400 includes a chassis mechanism 50 disposed in a flat manner, a steering mechanism 80 disposed on the chassis mechanism 50, and a wheel mechanism 60 connected to the chassis mechanism 50 and supporting the chassis mechanism 50. The wheel mechanism 60 is used to support the chassis structure on the ground and can roll on the ground, thereby achieving flexible movement of the chassis mechanism 50. The boom structure 200 includes a boom mechanism 10 and a driving mechanism 20, wherein the boom mechanism 10 includes a vertical arm 11 having one end connected to the steering mechanism 80, a telescopic arm 12 connected to the other end of the vertical arm 11 and extending toward the underground water chamber, and a supporting arm 13 connected to the vertical arm 11 and extending away from the underground water chamber. The drive mechanism 20 is provided to the support arm 13 and is used to lower the dredging pump into the groundwater chamber or to raise the dredging pump from the groundwater chamber. The vertical arm 11 is connected to the steering mechanism 80 and is rotated within a predetermined angle by the steering mechanism 80, thereby adjusting the relative position of the telescopic arm 12 and the underground water chamber. The supporting arm 13 and the telescopic arm 12 are respectively arranged at two sides of the vertical arm 11, and the dredging pump and the driving mechanism 20 are respectively arranged on the telescopic arm 12 and the supporting arm 13, so that the vertical arm 11 is beneficial to keeping three forces balanced. The counterweight structure 300 includes a counterweight mechanism and an adjustment mechanism for adjusting the position of the counterweight mechanism in the first direction and/or the second direction. Specifically, the first direction is a vertical direction in this embodiment, and the second direction is a horizontal direction. The adjusting mechanism comprises a first adjusting component 40 and a second adjusting component 45, wherein the first adjusting component 40 is connected with the counterweight mechanism and used for adjusting the position of the counterweight mechanism along the first direction, the second adjusting component 45 is connected with the supporting arm 13, the connecting position of the second adjusting component 45 and the supporting arm 13 is adjustable, so that the position of the counterweight mechanism along the second direction can be adjusted, and the first direction and the second direction are arranged in a staggered mode. The positions of the counterweight structure 300 in the first direction and the second direction can be adjusted by the first adjusting assembly 40 and the second adjusting assembly 45, respectively, so that the vertical arm 11 is kept balanced during the operation of the lifting crane 100, the stability of the lifting crane 100 is improved, and the overturning risk is reduced.
Referring to fig. 4-5, in one embodiment, the driving mechanism 20 includes a driving base connected to the supporting arm 13, a driver 23 connected to the driving base, and a winding assembly 22 spaced apart from the driver 23 and detachably connected to the driving base and driven by the driver 23, wherein the winding assembly 22 hangs the dredging pump. Alternatively, the transmission of the rotational force between the driver 23 and the winding assembly 22 may be performed by a belt structure or a gear structure.
Alternatively, the driver 23 is a servo motor and the power is 1.5 Kw. The driving mechanism 20 further includes an electromagnetic controller and a frequency converter for controlling the lifting and lowering of the dredging pump, and improving the working process of the lifting and lowering, thereby adjusting the working efficiency. The lifting and falling of the dredging pump are realized by controlling the positive and negative rotation of the servo motor through the electromagnetic controller, and when the electromagnetic controller operates at a specified position, the operation is stopped.
Specifically, the underground water chambers are provided with a plurality of underground water chambers, each underground water chamber is provided with a dredging pump, the winding assemblies 22 are arranged in one-to-one correspondence with the dredging pumps, and after the dredging pumps are put in place, the winding assemblies 22 are detached from the driving base. In one embodiment, the driving base is provided with a rotating groove, the winding assembly 22 includes a winding drum 222 with two ends detachably connected to two side walls of the rotating groove respectively and driven by the driver 23 to rotate, a wire rope 221 with one end detachably connected to the winding drum 222 and the other end arranged along the axial direction of the telescopic arm 12, and a hook 223 connected to the other end of the wire rope 221 and suspended with a dredging pump, the wire rope 221 is driven by the winding drum 222 to reciprocate along the axial direction of the telescopic arm 12 to descend or lift the dredging pump. Specifically, when a certain dredging pump is lowered to a specified underground water chamber, the steel wire rope 221 and the winding drum 222 are both detached from the driving mechanism 20, one end of the steel wire rope 221 is connected with the dredging pump, and the other end of the steel wire rope 221 is fixed beside an inlet of the underground water chamber, so that the next lifting work of the dredging pump is facilitated, the other end of the steel wire rope 221 is directly fixed on the corresponding winding drum 222, the lifting of the dredging pump can be realized, the operation is simple, and the cost is low. When another dredging pump is put down or lifted again, the steel wire rope 221 and the winding drum 222 connected with the dredging pump are directly replaced; when the dredging pump is recovered, the corresponding winding drum 222 and the steel wire rope 221 are installed. After the dredging pump is lifted, the steel wire rope 221 and the dredging pump are directly withdrawn; the method is convenient and quick, the steel wire rope 221 does not need to be rearranged in the follow-up work, and the dredging pump which is put down in place can be effectively fixed.
Referring to fig. 3 to 5, in an embodiment, the boom structure 200 further includes a first pulley 32 connected to one end of the vertical arm 11 and abutted against the steel cable 221, and a second pulley 31 connected to a free end of the telescopic arm 12 and abutted against the steel cable 221, where the first pulley 32 and the second pulley 31 are both used for assisting the steel cable 221 to slide back and forth, so as to reduce the friction resistance received by the steel cable 221 during the sliding process.
In one embodiment, the telescopic arm 12 includes a cantilever beam 121 connected to the upright arm 11 at one end and a sliding beam 122 slidably connected to the other end of the cantilever beam 121, wherein the sliding beam 122 slides along the axial direction of the cantilever beam 121 to adjust the overall length of the telescopic arm 12. Specifically, the second pulley 31 is connected to the sliding beam 122 and slides together with the sliding beam 122.
Further, the cantilever beam 121 is further provided with a power cord pulley 33 and a power cord winding sleeve spaced from the power cord pulley 33, so that the power cord and the steel wire rope 221 are moved in a doubling manner, and the power cord and the steel wire rope 221 are prevented from being wound and knotted.
In one embodiment, the cantilever beam 121 is a tubular structure, the sliding beam 122 is slidably inserted into the cantilever beam 121 at a free end of the cantilever beam 121, the sliding beam 122 further defines a plurality of positioning holes 124, each positioning hole 124 is spaced along an axial direction of the sliding beam 122, the free end of the cantilever beam 121 defines a locking hole 123 communicating with an inner cavity of the cantilever beam 121, and the boom structure 200 further includes a positioning pin disposed in the locking hole 123 and having one end penetrating through one of the positioning holes 124. Different positioning holes 124 are formed through the positioning pin, so that the whole length of the telescopic arm 12 is adjusted.
In one embodiment, the telescopic boom 12 is rotatably connected to the vertical boom 11 and can rotate relative to the vertical boom 11 in a plane passing through the vertical boom 11, the boom structure 200 further comprises a first angle adjusting mechanism 14, the first angle adjusting mechanism 14 is used for adjusting the rotation angle of the telescopic boom 12 and supporting the telescopic boom 12 after being adjusted in place, one end of the first angle adjusting mechanism 14 is connected to the telescopic boom 12, and the other end of the first angle adjusting mechanism 14 is connected to the vertical boom 11. Specifically, the first angle adjusting mechanism 14 in this embodiment is a pedal type hydraulic pump, so that the problem that the height of the support rod 72 cannot be adjusted by a small crane is solved, and the hydraulic pump is driven by stepping on the pedal, so that the operation is facilitated, and the dredging pump can be conveyed to predetermined positions with different heights.
Referring to fig. 1 to 5, in an embodiment, the supporting arm 13 is rotatably connected to the upright arm 11 and can rotate relative to the upright arm 11 in a plane passing through the upright arm 11, the suspension arm structure 200 further includes a second angle adjusting mechanism 15, the second angle adjusting mechanism 15 is used for adjusting a rotation angle of the supporting arm 13 and supporting the supporting arm 13 after being adjusted to a position, one end of the second angle adjusting mechanism 15 is connected to the upright arm 11, and the other end of the second angle adjusting mechanism 15 is connected to the supporting arm 13. Alternatively, the second angle adjustment mechanism 15 is an electric hydraulic pump, so that rotation of the support arm 13 is achieved to adjust the height of the drive mechanism 20, thereby stabilizing the vertical arm 11.
Optionally, the boom structure 200 further includes a weighing scale, and the weighing scale is used for determining the weight of the dredging pump, so as to avoid that the hanging object cannot be lifted normally due to overweight during the operation of the lifting crane 100, and thus the working efficiency is affected due to the condition that the telescopic boom 12 is broken. Specifically, the weight of the dredging pump is 300 KG. In one embodiment, the vertical arm 11 is vertically arranged, and the height of the connecting position of the telescopic arm 12 and the vertical arm 11 is larger than that of the connecting position of the supporting arm 13 and the vertical arm 11. Thereby keeping the height of the counterweight structure 300 attached to the support arm 13 relatively low, which is advantageous for lowering the overall center of gravity of the boom structure 200 and the counterweight structure 300, and stabilizing the lifting crane 100.
In one embodiment, the second adjusting component 45 includes an adjusting arm 43, the supporting arm 13 is provided with a guiding slot 132 along the axial direction thereof, the guiding slot 132 penetrates through the end surface of the free end of the supporting arm 13, and the adjusting arm 43 is inserted into the guiding slot 132 at the free end of the supporting arm 13 and can slide back and forth along the guiding slot 132 to adjust the position of the counterweight mechanism along the second direction. The counterweight mechanism is reciprocated in the second direction by the reciprocating sliding of the adjustment arm 43 in the guide groove 132, and the vertical arm 11 is stabilized in the horizontal direction.
In one embodiment, the adjusting arm 43 has a plurality of adjusting holes 48 along the axial direction thereof, the supporting arm 13 has a limiting hole 131 communicating with the guiding groove 132, and the second adjusting assembly 45 further includes an adjusting pin disposed in the limiting hole 131, and one end of the adjusting pin is located in one of the adjusting holes 48. Different limiting holes 131 are formed in the adjusting pin in a penetrating mode, so that the connecting position of the supporting arm 13 and the adjusting arm 43 is adjusted, the position of the counterweight mechanism in the horizontal direction is adjusted, the moment of the counterweight mechanism on the vertical arm 11 is adjusted, the moment of the counterweight box 46 is increased or reduced under the condition that the counterweight is not adjusted, and the vertical arm 11 can be kept balanced.
In one embodiment, the second adjustment assembly 45 further includes a weighted handle 44 coupled to the adjustment arm 43 and configured to drive the adjustment arm 43 to slide back and forth within the guide slot 132. The counterweight handle 44 can not only drive the adjusting arm 43 to move, but also push the lifting crane 100 to move integrally.
In one embodiment, the first adjusting assembly 40 includes a lead screw 42 having one end connected to the counterweight mechanism and the other end connected to the adjusting arm 43, a threaded hole is formed at a position where the adjusting arm 43 is connected to the lead screw 42, and the other end of the lead screw 42 is screwed into the threaded hole and reciprocally rotates relative to the adjusting arm 43 to adjust the position of the counterweight mechanism along the first direction.
In one embodiment, the second adjustment assembly 45 further includes a handwheel 41 connected to the other end of the lead screw 42 and configured to drive the lead screw 42 to rotate relative to the adjustment arm 43. The hand wheel disc 41 is operated by a user, so that the lead screw 42 is driven to rotate back and forth, and the position height of the counterweight mechanism in the vertical direction is adjusted.
Referring to fig. 2 to 4, in one embodiment, the counterweight mechanism includes a weight box 46 connected to the first adjusting assembly 40 and a plurality of counterweight members disposed in the weight box 46 at intervals. Specifically, the weight box 46 is open and the opening is disposed upward. One end of the screw rod 42 is rotatably connected with the box bottom of the weight box 46, and the weight part is tubular and is vertically or horizontally arranged in the weight box 46. The moment of the weight mechanism to the vertical arm 11 can be adjusted by adjusting the height of the weight box 46 by rotating the lead screw, and the moment of the weight box 46 can be increased or decreased without adjusting the weight, so that the vertical arm 11 can be kept in balance.
Optionally, the weight part is made of a waste pipeline, waste is utilized, materials are saved, and cost is saved.
In one embodiment, the weights of the respective weights are not equal. And the weights between the balance weight parts are sequentially arranged in an arithmetic progression, thereby enriching the adjusting range of the weight of the balance weight mechanism.
In one embodiment, the weight mechanism further includes a plurality of support wheels 47 connected to the weight box 46 for moving the weight box 46 on the ground, and the plurality of support wheels 47 are spaced apart. In particular, the support wheels 47 are universal wheels, which facilitate individual movement of the weight boxes 46 during individual handling of the weight boxes 46 by mounting the universal wheels on the weight boxes 46.
In one embodiment, the chassis mechanism 50 includes a bottom plate 52 disposed in a flat manner and two arms 51 connected to one end of the bottom plate 52 and extending toward the ground water chamber, the wheel mechanism 60 is connected to and supports the surface of the bottom plate 52 disposed downward, the steering mechanism 80 is disposed on the surface of the bottom plate 52 disposed upward, and the distance between the two arms 51 is gradually increased toward the ground water chamber. Optionally, the inlet of the underground water chamber is circular, and the two arms 51 are gradually enlarged toward the inlet of the underground water chamber, so that the inlet of the underground water chamber is included between the two arms 51 as much as possible, and the steering mechanism 80 and the boom structure 200 arranged on the bottom plate 52 can be as close to the water chamber as possible, thereby facilitating the lifting and lowering of the dredging pump. Optionally, the chassis mechanism is used to support the weight of the boom structure 200 and the counterweight structure 300 and the dredging pump, so as to ensure the stability of the lifting operation process of the dredging pump.
In one embodiment, the undercarriage structure 400 further includes an anti-roll mechanism 70 coupled to and supporting the chassis mechanism 50 and configured to prevent the chassis mechanism 50 from tipping.
In one embodiment, the anti-roll mechanism 70 includes a plurality of anti-roll feet 75 each connected at one end to and supporting the chassis mechanism 50, at least one anti-roll foot 75 connected to the base plate 52, and at least one anti-roll foot 75 connected to each arm 51. Optionally, the two support arms 51 extending outward are both provided with an anti-roll leg 75, and the anti-roll leg 75 is disposed as close as possible to the free ends of the support arms 51, so that the anti-roll leg 75 has a relatively long force arm, and further provides a relatively large support torque for the chassis mechanism 50, which is beneficial for the chassis mechanism 50 to keep stable.
The anti-roll feet 75 and the chassis mechanism 50 cooperate with each other to improve the stability of the hoist crane 100 and prevent the risk of overturning during the lifting process of the dredging pump.
In one embodiment, the anti-tilt leg 75 includes a support rod 72 connected to the chassis mechanism 50, a support pad 74 connected to one end of the support rod 72, and a steering handle 71 connected to the other end of the support rod 72 and used for driving the support rod 72 to rotate, the chassis mechanism 50 is provided with anti-tilt threaded holes for screw locking the support rod 72, and each support rod 72 is provided with external threads adapted to the corresponding anti-tilt threaded hole. By rotating the support rod 72, the support rod 72 can be abutted against the ground and support the chassis mechanism 50, and the operation is simple and convenient, and the cost is low. Specifically, the support pad 74 has a circular truncated cone shape and is made of a rubber material.
In one embodiment, the anti-roll mechanism 70 further includes a reinforcement nut 73 that is threaded onto the support rod 72, the reinforcement nut 73 being located between the chassis mechanism 50 and the support pad 74 and abutting the chassis mechanism 50. After the support rod 72 is adjusted in place, the support rod 72 is abutted against the chassis mechanism 50 through the reinforcing nut 73, so that the stability of the anti-roll mechanism 70 is further improved, and accidental looseness between the support rod 72 and the chassis mechanism 50 is avoided.
In one embodiment, the bottom plate 52 is provided with two anti-roll feet 75 at intervals, and the two anti-roll feet 75 and the two arms 51 are respectively located at two ends of the bottom plate 52.
In one embodiment, the wheel mechanism 60 includes a driven wheel 61 connected to one end of the base plate 52 and a steering wheel 62 connected to the other end of the base plate 52, and at least two driven wheels 61 and at least two steering wheels 62 are disposed at intervals. In particular, the steerable wheels 62 are also universal wheels, by which movement and steering of the undercarriage structure 400 is facilitated.
Referring to fig. 3 to 5, in an embodiment, the steering mechanism 80 includes a steering base disposed on the bottom plate 52, a worm wheel 81 rotatably connected to the steering base, a worm 82 engaged with the worm wheel 81 and used for driving the worm wheel 81 to rotate, and a steering wheel 83 connected to the worm 82 and operated by a human hand, and the vertical arm 11 is connected to the worm wheel 81 and rotates together with the worm wheel 81. The operation range of the boom structure 200 can be expanded by the steering mechanism 80. Specifically, in the present embodiment, the boom structure 200 can horizontally rotate 180 ° to lift and drop the dredging pump at different positions, without moving the lifting crane 100, thereby avoiding the re-fixing of the position of the lifting crane 100 and reducing the workload of the maintenance personnel.
In one embodiment, the base frame structure 400 further includes a safety guard 90 disposed on the steering mechanism 80, the safety guard 90 includes a plurality of columns 91 spaced around the steering mechanism 80 and having one end connected to the bottom plate 52, and a guard 92 connected to the other end of each column 91, and the guard 92 has a steering hole corresponding to the worm wheel 81 for the upright arm 11 to pass through. The safety guard 90 can effectively improve the reliability of the operation of the steering mechanism 80 and prevent foreign matters from obstructing the operation of the steering mechanism 80.
Optionally, the undercarriage mechanism further includes an electrical control mechanism 76 disposed on the base plate 52, the electrical control mechanism 76 being spaced apart from the steering mechanism 80. The electrical control mechanism 76 includes a main circuit breaker, a main power contactor, and a crowbar for each mechanism, so that a malfunctioning branch mechanism can be isolated for maintenance without affecting the operation of the other mechanisms. The electrical control mechanism 76 also includes a power distribution control loop having components for starting, stopping, electric locking, emergency stopping, power indication, safety switching, and emergency limit switching of the power supply of the entire machine, and providing short circuit, overcurrent, and overload protection.
The specific process of lowering and lifting the dredging pump is explained below in conjunction with the structure of the lifting crane 100 above:
the lifting crane 100 is pushed to the adjacent position of the underground water chamber on the site, the anti-tilting mechanism 70 is adjusted to enable each anti-tilting support leg 75 to be abutted to the ground, each anti-tilting support leg 75 is enabled to be approximately 200mm away from the ground, the wheel mechanism 60 is fixed, the telescopic arm 12 is adjusted to enable the telescopic arm 12 to extend by approximately 900mm, the first angle adjusting mechanism 14 is adjusted to extend by approximately 500mm, the cantilever beam 121 is rotated to enable the telescopic arm 12 to be located at the ground position, the winding drum 222 and the steel wire rope 221 are installed, the steel wire rope 221 is connected with a desilting pump, and the counterweight structure 300 is installed together.
And starting the driving mechanism 20, slowly lifting the dredging pump by the steel wire rope 221, stopping after the dredging pump is lifted above the guardrail of the underground water chamber, rotating the steering mechanism 80 and driving the vertical arm 11 to rotate, enabling the dredging pump to be positioned right above the inlet of the underground water chamber, and slowly lowering the dredging pump until the dredging pump is in place.
The steel wire rope 221 and the winding drum 222 are detached, one end of the steel wire rope 221 is fixed on a guardrail of the underground water chamber, and the other end of the steel wire rope 221 is continuously connected with the dredging pump.
A new spool 222 is installed and the above work is repeated until the lowering work of another dredging pump is completed.
After the operation is completed, the lifting crane 100 is adjusted to the initial state, and the lifting crane 100 is pushed away.
It can be understood that the lifting operation of the dredging pump can be completed by the reverse process of the process.
In this embodiment, through the pump body lifting means who adopts the pump body lifting means of modularized design lightweight, quick assembly disassembly and transportation to satisfy the field usage requirement and ensure that the use does not take place to overturn. There are 8 ground hydroeciums to wash during a unit overhaul, this lifting crane 100 can make things convenient for, swift, nimble dismouting and transportation to accomplish the promotion and the descending of desilting pump.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A boom structure for extracting an object from or delivering the object to a predetermined position, the boom structure comprising: davit mechanism and actuating mechanism, davit mechanism includes that one end is connected the outer structure and stands the arm, is connected stand the arm other end and court the preset position extends the flexible arm that sets up and is connected stand the arm and face and deviate from the support arm that preset position direction extended the setting, the free end of flexible arm is hung and is hung the target object, actuating mechanism set up in the support arm and be used for to preset position descends the target object or follow preset position promotes the target object.
2. The boom structure of claim 1, wherein: the driving mechanism comprises a driving base connected with the supporting arm, a driver connected with the driving base, and a winding assembly which is arranged at an interval with the driver, detachably connected with the driving base and driven by the driver, and the target object is hung on the winding assembly.
3. The boom structure of claim 2, wherein: the driving base is provided with a rotating groove, the winding assembly comprises two ends which are respectively detachably connected with the two side groove walls of the rotating groove, a winding drum driven by the driver and capable of rotating, one end of the winding drum is detachably connected with the other end of the winding drum along a steel wire rope arranged in the axial direction of the telescopic arm and connected with the other end of the steel wire rope, and the other end of the steel wire rope is suspended with a lifting hook of the target object, and the steel wire rope is driven by the winding drum to move in the axial direction of the telescopic arm in a reciprocating mode so as to descend or lift the target.
4. The boom structure of claim 3, wherein: the davit structure is still including connecting the one end of standing the arm and supplying the first pulley and the connection of wire rope butt the free end of flexible arm and supplying the second pulley of wire rope butt, first pulley with the second pulley all is used for assisting wire rope's reciprocal slip.
5. The boom structure of claim 1, wherein: the telescopic arm comprises a cantilever beam and a sliding beam, one end of the cantilever beam is connected with the vertical arm, the sliding beam is connected with the other end of the cantilever beam in a sliding mode, and the sliding beam slides along the axial direction of the cantilever beam so as to adjust the whole length of the telescopic arm.
6. The boom structure of claim 5, wherein: the cantilever beam is of a tubular structure, the sliding beam is inserted into the cantilever beam at the free end of the cantilever beam in a sliding mode, the sliding beam is further provided with a plurality of positioning holes, the positioning holes are arranged at intervals along the axial direction of the sliding beam, the free end of the cantilever beam is provided with a locking hole communicated with the inner cavity of the cantilever beam, and the cantilever arm structure further comprises a positioning pin which is arranged in the locking hole and one end of the positioning pin penetrates through one of the positioning holes.
7. The boom structure of claim 1, wherein: the telescopic boom with found the arm and rotate to be connected and can in crossing it is relative in the plane of standing the arm it rotates to found the arm, the davit structure still includes first angle adjustment mechanism, first angle adjustment mechanism is used for adjusting the turned angle of telescopic boom supports after adjusting to target in place telescopic boom, first angle adjustment mechanism's one end is connected telescopic boom, first angle adjustment mechanism's the other end is connected found the arm.
8. The boom structure of claim 1, wherein: the support arm with found the arm and rotate to be connected and can pass through it is relative in the plane of standing the arm stand the arm and rotate, davit structure still includes second angle adjustment mechanism, second angle adjustment mechanism is used for adjusting the turned angle of support arm supports after adjusting to target in place the support arm, the one end of second angle adjustment mechanism is connected found the arm, the other end of second angle adjustment mechanism is connected the support arm.
9. The boom structure of claim 1, wherein: the vertical arm is vertically arranged, and the height of the connecting position of the telescopic arm and the vertical arm is greater than that of the connecting position of the support arm and the vertical arm.
10. A lifting crane, comprising: the boom structure of any of claims 1-9, an undercarriage structure on which the boom structure is mounted, and a counterweight structure for mating with the boom structure.
CN201922042120.9U 2019-11-21 2019-11-21 Suspension arm structure and lifting crane Active CN211594830U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922042120.9U CN211594830U (en) 2019-11-21 2019-11-21 Suspension arm structure and lifting crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922042120.9U CN211594830U (en) 2019-11-21 2019-11-21 Suspension arm structure and lifting crane

Publications (1)

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CN211594830U true CN211594830U (en) 2020-09-29

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Country Link
CN (1) CN211594830U (en)

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