CN216190876U - Leveling system for working bucket of aerial working platform - Google Patents
Leveling system for working bucket of aerial working platform Download PDFInfo
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- CN216190876U CN216190876U CN202122383076.5U CN202122383076U CN216190876U CN 216190876 U CN216190876 U CN 216190876U CN 202122383076 U CN202122383076 U CN 202122383076U CN 216190876 U CN216190876 U CN 216190876U
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Abstract
The utility model discloses a leveling system for a working bucket of an aerial work platform, which comprises a platform main body, a moving mechanism and a leveling mechanism, wherein the moving mechanism and the leveling mechanism are respectively arranged on the platform main body, the leveling mechanism comprises a first steel wire rope wheel, a second steel wire rope wheel, a third steel wire rope wheel, a fourth steel wire rope wheel, a fifth steel wire rope wheel, a sixth steel wire rope wheel and steel wire ropes sequentially wound around the steel wire wheels, and the steel wire ropes are always in a tightened state. The leveling device is used for leveling the working bucket of the aerial working platform with two sections of telescopic arms, and has the advantages of safety, reliability, good leveling effect and low production cost; the defects of poor leveling effect, low reliability, high cost and the like of a double-oil-cylinder leveling system and an electro-hydraulic leveling system which are mainly used at present can be avoided.
Description
Technical Field
The utility model relates to the field of leveling of aerial work platforms, in particular to a leveling system for a working bucket of an aerial work platform.
Background
In the construction and maintenance of the current large-scale building, high-altitude operation is a basic operation content. Compared with traditional operation modes such as scaffold erecting and ladder erecting, the aerial work platform has the advantages of high operation safety, flexible operation, high efficiency and the like. The sales volume of the aerial work platform in recent years in China is rapidly increased, and the aerial work platform becomes one of main equipment for project construction and maintenance. For the existing aerial work platform, the working platform may incline due to the amplitude variation of the arm support. Tilting of the work platform can reduce the comfort of the operator standing thereon and seriously threaten the personal safety of the operator. Therefore, when the aerial work vehicle is used, the working platform is required to be ensured to be always in a horizontal state.
In the prior art, various leveling mechanisms for a working platform exist, such as a gravity type (dead weight) leveling mechanism, a four-bar leveling mechanism, a linkage double-cylinder system, an electro-hydraulic leveling system, and the like. However, the leveling mechanism has many disadvantages, such as that the stress of the pull rod of the four-bar leveling mechanism is increased along with the increase of the lift angle of the arm support, and the four-bar leveling mechanism cannot be used on an overhead working truck with a telescopic arm support; for example, in the electro-hydraulic leveling system described in patent document CN200720177871.6, the sensor detects the inclination angle of the working bucket, and then drives the hydraulic cylinder to stretch and contract to achieve the state of keeping the working bucket horizontal, and this leveling mode has high requirements on the accuracy and quality of the sensor and the controller, resulting in high cost.
The automatic leveling mechanism for the work platform of the aerial work platform described in the comparison document cn92200739.x provides an automatic leveling mode for realizing the work platform of the telescopic arm type and the hybrid aerial work platform by using a flexible element and a driving wheel set. However, the technical scheme uses too many elements, has too complex structure and is not easy to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a leveling system for a working bucket of an aerial work platform, which can finish the leveling of a telescopic arm type aerial work platform by using simple components.
In order to realize the above purpose, the aerial work platform working bucket leveling system comprises a platform main body, a moving mechanism and a leveling mechanism, and is characterized in that: the moving mechanism and the leveling mechanism are respectively arranged on the platform main body; the platform main body comprises a fixed seat, a first arm frame, a second arm frame and a working bucket, the upper end of the fixed seat is hinged with the tail of the first arm frame, and the working bucket is hinged with the head of the second arm frame;
the leveling mechanism comprises a steel wire rope, a first steel wire rope wheel, a second steel wire rope wheel, a third steel wire rope wheel, a fourth steel wire rope wheel, a fifth steel wire rope wheel and a sixth steel wire rope wheel, wherein the steel wire rope sequentially rounds the first steel wire rope wheel, the second steel wire rope wheel, the third steel wire rope wheel, the fourth steel wire rope wheel, the fifth steel wire rope wheel and the sixth steel wire rope wheel and is always in a tight state;
the first wire rope wheel and the third wire rope wheel are arranged at the hinged position of the fixed seat and the first section of the arm frame in parallel, and the sixth wire rope wheel is arranged at the hinged position of the working bucket and the second section of the arm frame;
the sum of the diameter D1 of the first wire rope wheel and the diameter D3 of the third wire rope wheel is equal to the diameter D6 of the sixth wire rope wheel, namely D1+ D3 is D6.
Furthermore, one end of the steel wire rope is fixed on the section of arm support, and the other end of the steel wire rope is fixed on the working bucket.
Furthermore, the second wire rope wheel is arranged on the fixed seat, the fourth wire rope wheel is arranged at the head of the section of the arm frame, and the fifth wire rope wheel is arranged at the tail of the section of the arm frame.
Further, the diameter D4 of the fourth wire sheave is equal to the diameter D5 of the fifth wire sheave, i.e., D4 is D5.
Further, the moving mechanism comprises a variable amplitude oil cylinder and a telescopic oil cylinder; the two sections of arm frames are sleeved in the one section of arm frame, one end of the variable-amplitude oil cylinder is hinged to the fixed seat, the other end of the variable-amplitude oil cylinder is hinged to the one section of arm frame, one end of the telescopic oil cylinder is hinged to the one section of arm frame, and the other end of the telescopic oil cylinder is hinged to the two sections of arm frames.
Further, the leveling mechanism is arranged on the inner side of the platform main body.
Further, the leveling mechanism is arranged on the outer side of the platform main body.
Furthermore, the leveling mechanisms are symmetrically arranged on the left side and the right side of the platform main body.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model adopts a pure mechanical structure, avoids complex different types of system elements and links such as detection, feedback, calculation, instruction, execution and the like in the prior art, reduces the requirement on the processing precision and improves the reliability of the system;
2. the combined leveling device has the advantages that the combined leveling is realized by adopting the synergistic effect of the steel wire rope and the steel wire rope wheels, the integral structure is simple, the installation is simple and convenient, when the outer side is selected for installation, the combined leveling device is easy to be directly hung on the outer side of the existing aerial work platform, the price of accessories is low, the accessories are easy to obtain, the cost is saved, and the manufacture is convenient;
3. the utility model is evolved from a chain and chain wheel type leveling mechanism, has the advantages of the prior art through unique design, and can be used for automatically leveling the operation platform of the telescopic arm type and the hybrid high-altitude operation vehicle, and has multiple purposes.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required by the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a leveling system for a working bucket of an aerial work platform according to an embodiment of the utility model.
Fig. 2 is a schematic cross-sectional view of a leveling system for a bucket of an aerial work platform according to an embodiment of the utility model.
Fig. 3 is a schematic structural diagram of a leveling system for a working bucket of an aerial work platform according to a second embodiment of the utility model.
Fig. 4 is a schematic cross-sectional view of a leveling system for a bucket of an aerial work platform according to a second embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a leveling system for a bucket of an aerial work platform according to a third embodiment of the utility model.
Reference numerals:
1. a fixed seat; 2. a section of arm support; 3. a second section of arm support; 4. a variable amplitude oil cylinder; 5. a telescopic oil cylinder; 6. a working bucket; 71. a first wire sheave; 72. a second wire sheave; 73. a third wire sheave; 74. a fourth wire sheave; 75. a fifth wire sheave; 76. a sixth wire rope wheel 8 and a wire rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
In the embodiment, as shown in fig. 1 and fig. 2, in the initial state of the aerial work platform, the bottom of the work platform fixing seat 1 is in a horizontal state, and the bottom of the work bucket 6 is also in a horizontal state, that is, the bottom of the work bucket 6 is parallel to the bottom of the fixing seat 1. The upper end of the fixed seat 1 is hinged with the tail part of the first arm support 2, the second arm support 3 is sleeved in the first arm support 2, and the working bucket 6 is hinged with the head part of the second arm support 3. One end of the amplitude-variable oil cylinder 4 is hinged on the fixed seat 1, and the other end is hinged on one section of arm support 2; one end of the telescopic oil cylinder 5 is hinged with the first section of arm support 2, and the other end is hinged with the second section of arm support 3.
One end of the wire rope 8 is fixed on a fixing hole of the arm frame 2, firstly bypasses a first wire rope wheel 71 fixed on the left side of the hinged part of the arm frame 2 and the fixing seat 1, then bypasses a second wire rope wheel 72 fixed on the fixing seat for guiding, and then bypasses a third wire rope wheel 73 also fixed on the hinged part of the arm frame 2 and the fixing seat 1, and the third wire rope wheel 73 is arranged on the right side of the first wire rope wheel 71 according to the figure 2. The steel wire rope 8 bypasses the third steel wire rope pulley 73 and then continuously bypasses a fourth steel wire rope pulley 74 fixed at the head of the first arm support 2, passes through the inside of the second arm support 3, bypasses a fifth steel wire rope pulley 75 fixed at the tail part of the inside of the second arm support 3, finally bypasses a sixth steel wire rope pulley 76 fixed at the hinged part of the second arm support 3 and the working bucket 6, and is fixed on a fixing hole of the working bucket 6.
Meanwhile, the sum of the diameter D1 of the first wire sheave 71 and the diameter D3 of the third wire sheave 73 is equal to the diameter D6 of the sixth wire sheave 76, i.e., D1+ D3 is D6. The diameter D4 of the fourth wire sheave 74 is equal to the diameter D5 of the fifth wire sheave 75, i.e., D4 is D5. The top of the third wire rope wheel 73 and the bottom of the fourth wire rope wheel 74 are positioned on the same horizontal plane, the top of the fourth wire rope wheel 74 and the bottom of the fifth wire rope wheel 75 are positioned on the same horizontal plane, and the top of the fifth wire rope wheel 75 and the top of the sixth wire rope wheel 76 are also positioned on the same horizontal plane, so that the wire ropes 8 are always parallel to the arm support in sections 73-74, 74-75 and 75-76.
Because the fixed seat is fixed, under the action of the gravity of the working bucket 6, the steel wire rope 8 is always pulled in the direction pointing to the working bucket 6, so that the steel wire rope 8 is always in a tightened state.
When the aerial work platform is lifted in the vertical direction, the amplitude cylinder 4 extends outwards, the arm support is lifted, the fourth wire rope wheel 74 and the fifth wire rope wheel 75 can lift along with the arm support, the first wire rope wheel 71, the second wire rope wheel 72, the third wire rope wheel 73 and the sixth wire rope wheel 76 cannot displace, so the head of the initial sections 71 and 74-73 of the wire rope 8 can tilt, the included angles between the two sections and the horizontal line in the vertical direction are increased respectively, and the increase amount of the included angles is equal to the increase amount of the included angle of one arm support 2 in the vertical direction relative to the fixed seat 1. This also causes the winding lengths of the wire rope 8 on the first and third wire sheaves 71 and 73 to be reduced, respectively, without a change in the relative distances between the respective wire sheaves and without a change in the total length of the wire rope, so that the reduced lengths are increased on the sixth wire sheave 76 under the weight of the working bucket 6. Since D1+ D3 is D6, the amount of increase in the length of the wire rope 8 wound around the sixth wire sheave 76 is equal to the sum of the amounts of decrease in the length of the wire rope 8 wound around the first and third wire sheaves 71 and 73. Therefore, the increase of the included angle between the sixth wire rope pulley 76 and the horizontal line in the vertical direction is equal to the increase of the included angle of one section of the arm support 2 relative to the fixed seat 1 in the vertical direction, and the increase directions of the two included angles are opposite, so that the bottom of the working bucket 6 and the bottom of the fixed seat 1 are in a parallel state, namely, the bottom of the working bucket 6 is in a horizontal state. Similarly, when the luffing cylinder 4 of the aerial work platform retracts, the boom is lowered, the fourth wire rope wheel 74 and the fifth wire rope wheel 75 can follow the boom to be lowered, the first wire rope wheel 71, the second wire rope wheel 72, the third wire rope wheel 73 and the sixth wire rope wheel 76 cannot be displaced, so the initial part to the 71 section and the head part from the 74 section to the 73 section of the wire rope 8 can be lowered, the two sections of the wire rope respectively reduce the included angle with the horizontal line in the vertical direction, and the reduction of the included angle is equal to the reduction of the included angle of the boom 2 in the vertical direction relative to the fixed seat 1. This also causes the wrapped lengths of the wire rope 8 on the first and third wire sheaves 71 and 73, respectively, to be increased without a change in the relative distance between the respective wire sheaves and without a change in the total length of the wire rope, so that the increased length is reduced on the sixth wire sheave 76 by the weight of the working bucket 6. Since D1+ D3 is D6, the decrease in the length of the wire rope 8 wound around the sixth wire sheave 76 is equal to the sum of the increases in the length of the wire rope 8 wound around the first and third wire sheaves 71 and 73. Therefore, the reduction of the included angle between the sixth wire rope pulley 76 and the horizontal line in the vertical direction is also equal to the reduction of the included angle between one section of the arm support 2 and the fixed seat 1 in the vertical direction, and the bottom of the working bucket 6 and the bottom of the fixed seat 1 are in a parallel state, namely the bottom of the working bucket 6 is in a horizontal state, because the two increased included angles are opposite in direction. From the above, no matter the luffing cylinder 4 extends or retracts, the bottom of the working bucket 6 can be kept in a horizontal state.
The horizontal line is an included angle reference line convenient for understanding of the embodiment and has no practical meaning.
When the telescopic oil cylinder 5 of the aerial work platform extends, the second arm support 3 extends outwards in the first arm support 2, the distance between the second arm support 3 and the third wire rope wheel 73 is increased, and the increased distance is equal to the extending distance of the second arm support 3 in the first arm support 2; and the distance between the fourth wire rope wheel 74 and the fifth wire rope wheel 75 is reduced, and the reduced distance is also equal to the overhanging distance of the two sections of arm frames 3 in the one section of arm frame 2. Since the two change distances are equal, the wire rope 8 does not affect the angle of the bucket 6, that is, the bucket 6 is kept in a horizontal state. Similarly, when the telescopic oil cylinder 5 of the aerial work platform retracts, the second arm support 3 retracts in the first arm support 2, the distance between the second arm support 3 and the third wire rope wheel 73 is reduced, and the reduced distance is equal to the retraction distance of the second arm support 3 in the first arm support 2; the distance between the fourth wire rope wheel 74 and the fifth wire rope wheel 75 is increased, the increased distance is equal to the retraction distance of the two sections of arm frames 3 in one section of arm frame 2, and the two change distances are equal, so that the wire rope 8 does not influence the angle of the working bucket 6, namely the working bucket 6 is kept in a horizontal state.
Example two
In this embodiment, as shown in fig. 3 and 4, the system structure and the leveling principle are the same as those of the first embodiment, and are not described herein again. The difference of the embodiment is that the fifth wire rope pulley 75 is arranged at the outer side of the tail part of the two sections of arm frames 3, so that 75-76 sections of the wire rope 8 can pass through the outer side of the two sections of arm frames 3, the arrangement can increase the vacant space in the two sections of arm frames 3, the wire rope can be used for arranging parts such as the telescopic oil cylinder 5, and the like, and the whole body is more attractive.
EXAMPLE III
The present embodiment is modified based on the second embodiment, and the front view of the system structure is similar to the front view of the structure shown in fig. 3 of the second embodiment, and the cross-sectional view is shown in fig. 5. The difference between the embodiment and the second embodiment is that one leveling mechanism in the second embodiment is replaced by two leveling mechanisms symmetrically arranged on the left side and the right side of the platform main body, and two symmetrically arranged steel wire ropes and two steel wire rope wheel sets are used. The left and right eccentric load force of the stress part can be balanced by the arrangement, and the stress effect is optimized.
In the description of the present invention, it is to be understood that the terms "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of description of the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the utility model as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense, and the scope of the present invention is defined by the appended claims.
Claims (9)
1. The utility model provides an aerial working platform work fill leveling system, includes platform main part, moving mechanism and levelling mechanism, its characterized in that: the moving mechanism and the leveling mechanism are respectively arranged on the platform main body;
the platform main body comprises a fixed seat (1), a section of arm support (2), a section of arm support (3) and a working bucket (6), the upper end of the fixed seat (1) is hinged with the tail part of the section of arm support (2), and the working bucket (6) is hinged with the head part of the section of arm support (3);
the leveling mechanism comprises a steel wire rope (8), a first steel wire rope wheel (71), a second steel wire rope wheel (72), a third steel wire rope wheel (73), a fourth steel wire rope wheel (74), a fifth steel wire rope wheel (75) and a sixth steel wire rope wheel (76), wherein the steel wire rope (8) sequentially bypasses the first steel wire rope wheel (71), the second steel wire rope wheel (72), the third steel wire rope wheel (73), the fourth steel wire rope wheel (74), the fifth steel wire rope wheel (75) and the sixth steel wire rope wheel (76) and is always in a tight state;
the first wire rope wheel (71) and the third wire rope wheel (73) are arranged in parallel at the hinged position of the fixed seat (1) and the first arm frame (2), and the sixth wire rope wheel (76) is arranged at the hinged position of the working bucket (6) and the second arm frame (3);
the sum of the diameter D1 of the first wire rope wheel (71) and the diameter D3 of the third wire rope wheel (73) is equal to the diameter D6 of the sixth wire rope wheel (76), namely D1+ D3 is D6.
2. The aerial work platform bucket leveling system of claim 1, wherein: one end of the steel wire rope (8) is fixed on the section of the arm support (2), and the other end of the steel wire rope is fixed on the working bucket (6).
3. The aerial work platform bucket leveling system of claim 1, wherein: the second wire rope wheel (72) is arranged on the fixed seat (1).
4. The aerial work platform bucket leveling system of claim 1, wherein: the fourth wire rope wheel (74) is arranged at the head of the first arm frame (2), and the fifth wire rope wheel (75) is arranged at the tail of the second arm frame (3).
5. The aerial work platform bucket leveling system of claim 3, wherein: the diameter D4 of the fourth wire sheave (74) is equal to the diameter D5 of the fifth wire sheave (75), i.e. D4-D5.
6. The aerial work platform bucket leveling system of claim 1, wherein: the moving mechanism comprises a variable amplitude oil cylinder (4) and a telescopic oil cylinder (5); the two sections of arm frames (3) are sleeved in the one section of arm frame (2), one end of the variable amplitude oil cylinder (4) is hinged to the fixed seat (1), the other end of the variable amplitude oil cylinder is hinged to the one section of arm frame (2), one end of the telescopic oil cylinder (5) is hinged to the one section of arm frame (2), and the other end of the telescopic oil cylinder is hinged to the two sections of arm frames (3).
7. The aerial work platform bucket leveling system of claim 1, wherein: the leveling mechanism is arranged on the inner side of the platform main body.
8. The aerial work platform bucket leveling system of claim 1, wherein: the leveling mechanism is arranged on the outer side of the platform main body.
9. The aerial work platform bucket leveling system of claim 1, wherein: the leveling mechanisms are symmetrically arranged on the left side and the right side of the platform main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383076.5U CN216190876U (en) | 2021-09-29 | 2021-09-29 | Leveling system for working bucket of aerial working platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383076.5U CN216190876U (en) | 2021-09-29 | 2021-09-29 | Leveling system for working bucket of aerial working platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216190876U true CN216190876U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122383076.5U Active CN216190876U (en) | 2021-09-29 | 2021-09-29 | Leveling system for working bucket of aerial working platform |
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| CN (1) | CN216190876U (en) |
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2021
- 2021-09-29 CN CN202122383076.5U patent/CN216190876U/en active Active
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