CN218202086U - Boom telescopic transmission mechanism and overhead working truck - Google Patents
Boom telescopic transmission mechanism and overhead working truck Download PDFInfo
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- CN218202086U CN218202086U CN202222656902.3U CN202222656902U CN218202086U CN 218202086 U CN218202086 U CN 218202086U CN 202222656902 U CN202222656902 U CN 202222656902U CN 218202086 U CN218202086 U CN 218202086U
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Abstract
The utility model belongs to the technical field of high altitude construction car, a cantilever crane telescopic transmission mechanism and high altitude construction car are specifically disclosed. The boom extension transmission mechanism of the utility model is applied to the high-altitude operation vehicle, the extension rod end of the extension oil cylinder extends or retracts relative to the cylinder end, so as to drive the second-stage boom to extend or retract relative to the first-stage boom, the extension transmission rope is matched with the extension reversing wheel to drive the booms at all stages to extend relatively, and the retraction transmission rope is matched with the retraction reversing wheel to drive the booms at all stages to retract relatively; the traction force is applied to the upper side face of the at least one stage of arm support by the extension transmission rope, the traction force is applied to the upper side face and the upper side face of the left side face and the upper side face of the right side face of the at least one stage of arm support by the extension transmission rope, and the traction force is applied to the lower side of the left side and the lower side of the right side face of the arm support by the retraction transmission rope.
Description
Technical Field
The utility model belongs to the technical field of the high altitude construction car, a cantilever crane telescopic transmission mechanism and high altitude construction car is related to.
Background
The overhead working truck is a special vehicle for transporting workers and equipment to carry out overhead working. The conventional common overhead working truck mainly has two forms of a folding arm type and a straight arm type, and the straight arm type overhead working truck is more and more approved by multiple users due to higher operation flexibility and has better application prospect. The straight arm type overhead working truck generally comprises a truck chassis, an arm support and a working platform, wherein a rotary table is arranged on the truck chassis, the lower end of the arm support is connected with the rotary table, the upper end of the arm support is provided with the working platform, the working platform is transferred to an overhead area to be operated after the arm support is extended and lifted, and the working platform is reset after the arm support is retracted and falls down. The telescopic oil cylinder drives the arm support to extend and retract through the transmission chain, the transmission chain is arranged on the upper side and the lower side of the outside of the arm support, traction force is applied to the upper side and the lower side of the arm support by the transmission chain, and the left side and the right side of the arm support are prone to shaking in the relative telescopic process, so that the telescopic stability of the arm support is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cantilever crane telescopic transmission mechanism and high altitude construction car to alleviate the degree of rocking on the left and right side of cantilever crane in the relative flexible in-process of cantilever crane.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
a boom extension transmission mechanism comprises a multi-stage boom which is sequentially nested from outside to inside, and further comprises an extension oil cylinder, an extension reversing wheel, an extension transmission rope, a retraction reversing wheel and a retraction transmission rope;
the multi-stage arm support can be relatively extended or retracted;
the telescopic rod end of the telescopic oil cylinder is connected with the lower end of the first-stage arm frame, and the cylinder body end of the telescopic oil cylinder is connected with the lower end of the second-stage arm frame;
defining any one stage of arm support in the multi-stage arm support as an arm support A, defining the next stage of arm support of the arm support A as an arm support B, and defining the two stages of arm supports below the arm support A as an arm support C;
an extension reversing wheel is arranged at the upper end of the arm support B, one end of an extension transmission rope is connected with the arm support A, the extension transmission rope penetrates through the extension reversing wheel, and the other end of the extension transmission rope is connected with the arm support C;
the extension reversing wheels on at least one arm support B are arranged on the upper side surface of the arm support B, and the extension reversing wheels on at least one arm support B are arranged above the left side surface and above the right side surface of the arm support B;
when the extension reversing wheel on the arm support B is arranged on the upper side surface of the arm support B, one end of the extension transmission rope is connected with the upper end of the arm support A, and the other end of the extension transmission rope is connected with the lower end of the arm support C;
when the extension reversing wheels on the arm support B are arranged above the left side surface and the right side surface of the arm support B, one end of the extension transmission rope is connected with the lower end of the arm support A, and the other end of the extension transmission rope is connected with the lower end of the arm support C;
a retraction reversing wheel is arranged at the lower end of the arm support B, one end of a retraction transmission rope is connected with the upper end of the arm support A, the retraction transmission rope penetrates through the retraction reversing wheel, and the other end of the retraction transmission rope is connected with the lower end of the arm support C;
and the retracting reversing wheels on the arm support B are arranged below the left side and below the right side of the arm support B.
Preferably, the arm support is arranged in seven stages.
Preferably, the extension reversing wheel on the second-stage arm support is arranged on the upper side surface of the second-stage arm support, the extension reversing wheel on the third-stage arm support is arranged above the left side surface and above the right side surface of the third-stage arm support, the extension reversing wheel on the fourth-stage arm support is arranged on the upper side surface of the fourth-stage arm support, the extension reversing wheel on the fifth-stage arm support is arranged on the upper side surface of the fifth-stage arm support, and the extension reversing wheel on the sixth-stage arm support is arranged on the upper side surface of the sixth-stage arm support.
Preferably, when the extension reversing wheels on the arm support B are arranged above the left side surface and above the right side surface of the arm support B, the tail ends of the extension reversing wheels are provided with friction columns.
Preferably, the end of the retraction reversing wheel is provided with a friction column.
Preferably, the left side and the right side of the upper side surface of the arm support B are respectively provided with an extension reversing wheel.
Preferably, the other end of the stretching transmission rope penetrating through the left stretching reversing wheel on the upper side of the arm support B and the other end of the stretching transmission rope penetrating through the right stretching reversing wheel on the upper side of the arm support B are connected into a whole and assembled on the arm support C through a rope seat.
Preferably, the circumferential direction of the rope seat is arranged to be a semicircular rope groove, and the extension driving rope is positioned in the rope groove.
Preferably, the tail end of the cylinder body end of the telescopic oil cylinder is provided with a roller, and the roller is in rolling contact with the lower side surfaces of the inner walls of the arm supports at all levels.
An aerial work vehicle is provided with the arm support telescopic transmission mechanism.
Compared with the prior art, the utility model, following beneficial effect has:
as mentioned above, the utility model relates to a boom extension transmission mechanism, which is applied to an overhead working truck, the extension rod end of the extension cylinder extends or retracts relative to the cylinder body end, so as to drive the second-stage boom to extend or retract relative to the first-stage boom, the extension transmission rope is matched with the extension reversing wheel to drive the booms at all stages to extend relatively, and the retraction transmission rope is matched with the retraction reversing wheel to drive the booms at all stages to retract relatively; the traction force is applied to the upper side face of the at least one stage of arm support by the extending transmission rope, the traction force is applied to the upper side face and the upper side face of the left side face and the upper side face of the right side face of the at least one stage of arm support by the extending transmission rope, and the traction force is applied to the lower side of the left side and the lower side of the right side face of the arm support by the retracting transmission rope.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a top view of an arm support telescopic transmission mechanism in an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a top view of the boom, the steering wheel, the transmission rope, and other parts in the embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 4;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 4;
fig. 7 is a side view of the boom, the reverse wheel, the transmission rope and the like in the embodiment of the present invention;
FIG. 8 is a cross-sectional view E-E of FIG. 7;
fig. 9 is a vertical axial sectional view of the front three sections of the arm support, the reversing wheel, the transmission rope and the like in the embodiment of the present invention;
fig. 10 is a vertical axial sectional view of three to five sections of the arm support, the reversing wheel, the transmission rope and the like in the embodiment of the present invention;
fig. 11 is a horizontal cross-sectional view of three to five sections of the arm support, the reversing wheel, the transmission rope and the like along the axial direction in the embodiment of the present invention;
fig. 12 is a vertical axial sectional view of four to six sections of the arm support, the reversing wheel, the transmission rope and the like in the embodiment of the present invention;
fig. 13 is a horizontal cross-sectional view of four to six sections of the arm support, the reversing wheel, the transmission rope and the like along the axial direction in the embodiment of the present invention;
fig. 14 is a vertical axial sectional view of five to seven sections of arm frames, reversing wheels, transmission ropes and the like in the embodiment of the present invention;
fig. 15 is a horizontal cross-sectional view of five to seven sections of the arm support, the reversing wheel, the transmission rope and the like along the axial direction in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 15, the boom extension transmission mechanism in this embodiment includes a first-stage boom 11, a second-stage boom 12, a third-stage boom 13, a fourth-stage boom 14, a fifth-stage boom 15, a sixth-stage boom 16, and a seventh-stage boom 17 that are sequentially nested from outside to inside, and further includes a telescopic cylinder 2, an extension reversing wheel 31, an extension transmission rope 41, a retraction reversing wheel 32, and a retraction transmission rope 42.
The seven-stage arm support can be relatively extended or retracted so as to drive the working platform at the tail end of the arm support to be positioned near the position to be operated.
The telescopic rod end of the telescopic oil cylinder 2 is connected with the lower end of the first-stage arm support 11, and the cylinder body end of the telescopic oil cylinder 2 is connected with the lower end of the second-stage arm support 12. The telescopic rod end of the telescopic oil cylinder 2 extends or retracts relative to the cylinder body end, and then the second-stage arm support 12 is driven to extend or retract relative to the first-stage arm support 11. The tail end of the cylinder body end of the telescopic oil cylinder 2 is provided with a wheel seat, the wheel seat is connected with a roller 21 in a rotating mode, and the roller 21 is in rolling contact with the lower side surfaces of the inner walls of the arm frames at all levels so that the tail end of the cylinder body of the telescopic oil cylinder 2 rolls along the inner walls of the arm frames at all levels.
Any one stage of arm frame in the seven-stage arm frame is defined as an arm frame A, the next stage of arm frame A is defined as an arm frame B, and the two stages of arm frames below the arm frame A are defined as an arm frame C.
The upper end of the arm support B is provided with an extension reversing wheel 31, one end of an extension driving rope 41 is connected with the arm support A, the extension driving rope 41 penetrates through the extension reversing wheel 31, and the other end of the extension driving rope 41 is connected with the arm support C. At least one extension reversing wheel 31 on the arm support B is arranged on the upper side surface of the arm support B, and at least one extension reversing wheel 31 on the arm support B is arranged above the left side surface and above the right side surface of the arm support B. When the extension reversing wheel 31 on the arm support B is arranged on the upper side surface of the arm support B, one end of an extension transmission rope 41 is connected with the upper end of the arm support A, and the other end of the extension transmission rope 41 is connected with the lower end of the arm support C; when the extension reversing wheels 31 on the arm support B are arranged above the left side surface and the right side surface of the arm support B, one end of the extension transmission rope 41 is connected with the lower end of the arm support A, and the other end of the extension transmission rope 41 is connected with the lower end of the arm support C.
When the extension reversing wheels 31 on the arm support B are arranged above the left side surface and above the right side surface of the arm support B, the friction columns 5 are arranged at the tail ends of the extension reversing wheels 31, and the friction columns 5 are made of nylon materials and are worn parts, so that gaps between adjacent arm supports are adjusted through the friction columns 5.
The left side and the right side of the upper side of the arm support B are respectively provided with an extension reversing wheel 31, so that the extension driving rope 41 applies traction to the left side and the right side of the upper side of the arm support B.
Specifically, the other end of the extension driving rope 41 penetrating through the left extension reversing wheel 31 on the upper side of the arm support B and the other end of the extension driving rope 41 penetrating through the right extension reversing wheel 31 on the upper side of the arm support B are connected into a whole, so that the two extension driving ropes 41 are connected to form a rope, and the rope is assembled on the arm support C through a rope seat 43, so that the assembly between the extension driving rope 41 and the arm support C is simplified. The circumference of rope holder 43 sets up to semicircle annular grooving, and extension driving rope 41 is located the grooving to realize the crooked transition of extension driving rope 41, the extension extends driving rope 41's life.
In this embodiment, the extension reversing wheel 31 on the second-stage boom 12 is arranged on the upper side surface of the second-stage boom 12, the extension reversing wheel 31 on the third-stage boom 13 is arranged above the left side surface and above the right side surface of the third-stage boom 13, the extension reversing wheel 31 on the fourth-stage boom 14 is arranged on the upper side surface of the fourth-stage boom 14, the extension reversing wheel 31 on the fifth-stage boom 15 is arranged on the upper side surface of the fifth-stage boom 15, and the extension reversing wheel 31 on the sixth-stage boom 16 is arranged on the upper side surface of the sixth-stage boom 16. In this way, the extension reversing wheels 31 are arranged above the left side surface and above the right side surface of the third-stage arm frame 13, and the extension driving ropes 41 are respectively connected with the second-stage arm frame 12 and the fourth-stage arm frame 14, so that the extension driving ropes 41 apply traction to the upper side surface and the upper side surface of the left side surface and the upper side surface of the right side surface of the third-stage arm frame 13 basically near the middle position of each stage of arm frame.
The lower end of the arm support B is provided with a retraction reversing wheel 32, one end of a retraction transmission rope 42 is connected with the upper end of the arm support A, the retraction transmission rope 42 penetrates through the retraction reversing wheel 32, and the other end of the retraction transmission rope 42 is connected with the lower end of the arm support C. The retracting reversing wheels 32 on the arm support B are arranged below the left side and below the right side of the arm support B.
The tail end of the retraction reversing wheel 32 is provided with a friction column 5, the friction column 5 is made of nylon materials and is a wearing part, and therefore the gap between the adjacent arm supports can be adjusted through the friction column 5.
An aerial work vehicle is provided with the arm support telescopic transmission mechanism.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly understand the telescopic transmission mechanism of the boom of the present invention. The boom extension transmission mechanism of the utility model is applied to the high-altitude operation vehicle, the extension rod end of the extension oil cylinder 2 extends or retracts relative to the cylinder end, so as to drive the second-stage boom 12 to extend or retract relative to the first-stage boom 11, the extension transmission rope 41 is matched with the extension reversing wheel 31 to drive the booms at all stages to extend relatively, and the retraction transmission rope 42 is matched with the retraction reversing wheel 32 to drive the booms at all stages to retract relatively; the stretching transmission rope 41 applies traction to the upper side face of the at least one stage of arm support, the stretching transmission rope 41 applies traction to the upper side face and the upper side face of the left side face and the upper side face of the right side face of the at least one stage of arm support, and the retracting transmission rope 42 applies traction to the lower left side face and the lower right side face of the arm support.
Of course, the above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all are in the utility model discloses a under the design, utilize the equivalent structure transform that the content of the description and the attached drawings did, or direct/indirect application all includes in other relevant technical fields the utility model discloses a protection within the scope should be received to the reason.
Claims (10)
1. A boom extension transmission mechanism is characterized in that,
the telescopic arm frame comprises a multi-stage arm frame which is sequentially nested from outside to inside, and further comprises a telescopic oil cylinder, an extension reversing wheel, an extension transmission rope, a retraction reversing wheel and a retraction transmission rope;
the multi-stage arm support can be relatively extended or retracted;
the telescopic rod end of the telescopic oil cylinder is connected with the lower end of the first-stage arm frame, and the cylinder body end of the telescopic oil cylinder is connected with the lower end of the second-stage arm frame;
defining any one stage of arm support in the multi-stage arm support as an arm support A, defining the next stage of arm support of the arm support A as an arm support B, and defining the two stages of arm supports below the arm support A as an arm support C;
an extension reversing wheel is arranged at the upper end of the arm support B, one end of an extension transmission rope is connected with the arm support A, the extension transmission rope penetrates through the extension reversing wheel, and the other end of the extension transmission rope is connected with the arm support C;
the extension reversing wheels on at least one arm support B are arranged on the upper side surface of the arm support B, and the extension reversing wheels on at least one arm support B are arranged above the left side surface and above the right side surface of the arm support B;
when the extension reversing wheel on the arm support B is arranged on the upper side surface of the arm support B, one end of the extension transmission rope is connected with the upper end of the arm support A, and the other end of the extension transmission rope is connected with the lower end of the arm support C;
when the extension reversing wheels on the arm support B are arranged above the left side surface and the right side surface of the arm support B, one end of the extension transmission rope is connected with the lower end of the arm support A, and the other end of the extension transmission rope is connected with the lower end of the arm support C;
a retraction reversing wheel is arranged at the lower end of the arm support B, one end of a retraction transmission rope is connected with the upper end of the arm support A, the retraction transmission rope penetrates through the retraction reversing wheel, and the other end of the retraction transmission rope is connected with the lower end of the arm support C;
and the retracting reversing wheels on the arm support B are arranged below the left side and below the right side of the arm support B.
2. The boom extension transmission mechanism of claim 1,
the arm support is arranged into seven levels.
3. The boom extension transmission mechanism of claim 2, wherein,
the extension reversing wheel on the second-stage arm frame is arranged on the upper side face of the second-stage arm frame, the extension reversing wheel on the third-stage arm frame is arranged above the left side face and the right side face of the third-stage arm frame, the extension reversing wheel on the fourth-stage arm frame is arranged on the upper side face of the fourth-stage arm frame, the extension reversing wheel on the fifth-stage arm frame is arranged on the upper side face of the fifth-stage arm frame, and the extension reversing wheel on the sixth-stage arm frame is arranged on the upper side face of the sixth-stage arm frame.
4. The boom extension transmission mechanism of claim 1, wherein,
when the extension reversing wheels on the arm support B are arranged above the left side surface and the right side surface of the arm support B, the tail ends of the extension reversing wheels are provided with friction columns.
5. The boom extension transmission mechanism of claim 1, wherein,
and the tail end of the retraction reversing wheel is provided with a friction column.
6. The boom extension transmission mechanism of claim 1, wherein,
the left side and the right side of the upper side surface of the arm support B are respectively provided with an extension reversing wheel.
7. The boom extension transmission mechanism of claim 6, wherein,
the other end of the extension transmission rope penetrating through the left extension reversing wheel on the upper side of the arm support B and the other end of the extension transmission rope penetrating through the right extension reversing wheel on the upper side of the arm support B are connected into a whole and are assembled on the arm support C through a rope seat.
8. The boom extension transmission mechanism of claim 7, wherein,
the circumference of the rope seat is set to be a semicircular rope groove, and the extension transmission rope is positioned in the rope groove.
9. The boom extension transmission mechanism of claim 1,
and the tail end of the cylinder body end of the telescopic oil cylinder is provided with a roller, and the roller is in rolling contact with the lower side surfaces of the inner walls of the arm frames at all levels.
10. An aerial working platform, its characterized in that: the aerial lift truck is provided with the boom extension transmission mechanism of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222656902.3U CN218202086U (en) | 2022-10-10 | 2022-10-10 | Boom telescopic transmission mechanism and overhead working truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222656902.3U CN218202086U (en) | 2022-10-10 | 2022-10-10 | Boom telescopic transmission mechanism and overhead working truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218202086U true CN218202086U (en) | 2023-01-03 |
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ID=84639395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222656902.3U Active CN218202086U (en) | 2022-10-10 | 2022-10-10 | Boom telescopic transmission mechanism and overhead working truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218202086U (en) |
-
2022
- 2022-10-10 CN CN202222656902.3U patent/CN218202086U/en active Active
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