CN219751738U - Limiting device for jacking tower crane - Google Patents
Limiting device for jacking tower crane Download PDFInfo
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- CN219751738U CN219751738U CN202321098294.7U CN202321098294U CN219751738U CN 219751738 U CN219751738 U CN 219751738U CN 202321098294 U CN202321098294 U CN 202321098294U CN 219751738 U CN219751738 U CN 219751738U
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- 230000009194 climbing Effects 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model discloses a limiting device for lifting a tower crane, and relates to the technical field of tower cranes. The hydraulic lifting jack comprises a limiting component, wherein the limiting component is arranged at the side of a hydraulic lifting jack, a cylinder body of the hydraulic lifting jack is vertically fixed on the side surface of a climbing sleeve frame, the climbing sleeve frame is sleeved at the upper end of a tower body, the climbing sleeve frame and the tower body are detachably and fixedly connected, and the tower body is formed by splicing a plurality of standard joints fixed end to end; the limit component comprises an upper support frame, a lower contact switch, a lower support frame and an upper contact switch; the upper supporting frame is made of L-shaped flat steel and is fixed on a cylinder body of the hydraulic jack, and the lower contact switch is arranged at the top of a transverse plate of the upper supporting frame. According to the utility model, the upper support frame, the lower contact switch, the lower support frame and the upper contact switch are arranged, so that a limiting mechanism is arranged when the tower crane is lifted, and the situation that the climbing sleeve frame is lifted too high, the gap between the climbing sleeve frame and a standard node is large, weightlessness and instability occur, and the climbing sleeve frame is inclined and tilted during lifting, so that a large potential safety hazard or safety accident is caused is avoided.
Description
Technical Field
The utility model belongs to the technical field of tower cranes, and particularly relates to a limiting device for lifting a tower crane.
Background
The tower crane is a lifting device which is most commonly used on a building site, is also called as a tower crane, and is used for lifting construction raw materials such as steel bars, wood edges, concrete, steel pipes and the like for construction by lengthening one section (high) (short for "standard section"). The tower crane is an indispensable equipment on the site.
The lifting of the tower suspended ceiling is to lift the standard section by utilizing the hydraulic facilities of the tower suspended ceiling to reach the required height, but the lifting height of the climbing sleeve frame is difficult to accurately control when the existing tower suspended ceiling is lifted, the clearance between the climbing sleeve frame and the standard section is easy to cause, commonly called the tower body standard section is anchored in the sleeve frame to be shorter, so that weightlessness and instability are caused, and the lifting inclination and the tilting are caused, so that the potential safety hazard or the safety accident is easy to cause.
Therefore, the existing tower crane cannot meet the needs in practical use, so there is an urgent need for improved techniques in the market to solve the above problems.
Disclosure of Invention
The utility model aims to provide a limiting device for lifting a tower crane, which is provided with an upper supporting frame, a lower contact switch, a lower supporting frame and an upper contact switch, so that a limiting mechanism is arranged during lifting of the tower crane, and the problems that a climbing sleeve frame is excessively lifted, a clearance between the climbing sleeve frame and a standard node is large, weightlessness and instability occur, and the climbing sleeve frame is inclined and overturned during lifting, so that a large potential safety hazard or safety accident is caused are avoided.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a limiting device for lifting a tower crane, which comprises a limiting component, wherein the limiting component is arranged at the side of a hydraulic jack, a cylinder body of the hydraulic jack is vertically fixed on the side surface of a climbing sleeve frame, the climbing sleeve frame is sleeved at the upper end of a tower body, the climbing sleeve frame and the climbing sleeve frame are detachably and fixedly connected, and the tower body is formed by splicing a plurality of standard sections fixed end to end.
The limit component comprises an upper support frame, a lower contact switch, a lower support frame and an upper contact switch; the upper supporting frame is made of L-shaped flat steel, and is fixed on a cylinder body of the hydraulic jack, and the lower contact switch is arranged at the top of a transverse plate of the upper supporting frame; the bottom of lower carriage is fixed on the side of the standard festival below the cover frame that climbs, and the top of lower carriage sets up to the L type, goes up contact switch and sets up in the top diaphragm bottom of lower carriage, and goes up contact switch and lower contact switch and set up relatively.
Further, the limiting assembly further comprises a distance sensor; the distance sensor is also arranged at the bottom of the top transverse plate of the lower support frame and used for measuring the distance between the upper contact switch and the lower contact switch.
Further, the lower support frame comprises an outer frame body and an L-shaped inner frame body; the inner side face of the outer frame body is provided with a sliding groove, the L-shaped inner frame body is in sliding fit with the sliding groove, the bottom end of the L-shaped inner frame body is fixedly connected with the end part of a piston rod of the electric push rod, and a cylinder body of the electric push rod is fixed in the sliding groove.
Further, the bottom end of the outer frame body is provided with a U-shaped connecting part, and the whole lower support frame is fixed on the standard section through the U-shaped connecting part.
Further, a supporting base is fixed at the end part of a piston rod of the hydraulic jack, and the supporting base is detachably and fixedly connected with the standard section.
Further, the limiting component and the hydraulic jack are both provided with two, and are respectively and symmetrically distributed on two sides of the climbing sleeve frame.
The utility model has the following beneficial effects:
1. the upper support frame, the lower contact switch, the lower support frame and the upper contact switch are arranged, so that a limiting mechanism is arranged when the tower crane is lifted, the upper end of the climbing sleeve frame is ensured to be just provided with a space which can be filled into a standard section after the climbing sleeve frame is lifted, and the situation that the climbing sleeve frame is lifted too high, the gap between the climbing sleeve frame and the standard section is large, the weight is lost, the stability is lost, and the climbing sleeve frame is inclined and tilted during lifting, so that a large potential safety hazard or safety accident is caused is avoided.
2. According to the utility model, the outer frame body, the L-shaped inner frame body, the sliding groove and the electric push rod are arranged, so that the length of the lower support frame can be adjusted, the limiting device can adapt to the use of standard sections of different types, and the distance between the lower contact switch and the upper contact switch is measured through the distance sensor during adjustment, so that the accuracy is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of an overall structure;
FIG. 2 is a schematic diagram of a tower structure;
FIG. 3 is a schematic view of a hydraulic jack and climbing frame;
FIG. 4 is a front cross-sectional view of the spacing assembly, hydraulic jack, climbing carriage;
FIG. 5 is a schematic diagram of a limiting assembly;
fig. 6 is a schematic view of the structure of the lower support frame.
In the drawings, the list of components represented by the various numbers is as follows:
1. a limit component; 2. a hydraulic jack; 3. climbing the sleeve frame; 4. a tower body; 11. an upper support frame; 12. a lower contact switch; 13. a lower support frame; 14. an upper contact switch; 15. a distance sensor; 21. a support base; 41. a standard section; 131. an outer frame body; 132. an L-shaped inner frame body; 133. a chute; 134. an electric push rod; 135. u-shaped connecting part.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1 to 4, the utility model discloses a limiting device for lifting a tower crane, which comprises a limiting component 1, wherein the limiting component 1 is arranged on the side of a hydraulic jack 2, a cylinder body of the hydraulic jack 2 is vertically fixed on the side of a climbing sleeve frame 3, a supporting base 21 is fixed at the end part of a piston rod of the hydraulic jack 2, the supporting base 21 is detachably and fixedly connected with a standard section 41, the limiting component 1 and the hydraulic jack 2 are respectively provided with two, the limiting component 1 and the hydraulic jack 2 are respectively symmetrically distributed on two sides of the climbing sleeve frame 3, the climbing sleeve frame 3 is sleeved on the upper end of a tower body 4, the two are detachably and fixedly connected, and the tower body 4 is formed by splicing a plurality of standard sections 41 fixed from beginning to end.
As shown in fig. 5, the limiting assembly 1 comprises an upper supporting frame 11, a lower contact switch 12, a lower supporting frame 13 and an upper contact switch 14; the upper supporting frame 11 is made of L-shaped flat steel, and is fixed on a cylinder body of the hydraulic jack 2, and the lower contact switch 12 is arranged at the top of a transverse plate of the upper supporting frame 11; the bottom end of the lower support frame 13 is fixed on the side surface of a standard joint 41 below the climbing sleeve frame 3, the top end of the lower support frame 13 is L-shaped, the upper contact switch 14 is arranged at the bottom of a top transverse plate of the lower support frame 13, and the upper contact switch 14 is arranged opposite to the lower contact switch 12; the spacing assembly 1 further comprises a distance sensor 15; a distance sensor 15 is also provided at the bottom of the top cross plate of the lower support frame 13 for measuring the distance between the upper contact switch 14 and the lower contact switch 12.
As shown in fig. 6, the lower support frame 13 includes an outer frame body 131 and an L-shaped inner frame body 132; a sliding groove 133 is formed in the inner side surface of the outer frame body 131, the L-shaped inner frame body 132 is in sliding fit with the sliding groove 133, the bottom end of the L-shaped inner frame body 132 is fixedly connected with the end part of a piston rod of the electric push rod 134, and a cylinder body of the electric push rod 134 is fixed in the sliding groove 133; the bottom end of the outer frame 131 is provided with a U-shaped connecting part 135, and the whole lower support frame 13 is fixed on the standard joint 41 through the U-shaped connecting part 135.
When the length of the lower support frame 13 is adjusted, the distance between the lower contact switch 12 and the upper contact switch 14 is measured through the distance sensor 15, if the distance does not reach a required value, the electric push rod 134 is controlled to drive the L-shaped inner frame 132 to ascend or descend along the sliding groove 133 until the distance between the lower contact switch 12 and the upper contact switch 14 reaches the required value, so that after the climbing frame 3 is lifted, the upper end of the climbing frame 3 is ensured to be just provided with a space capable of being filled with a standard section 41, and the climbing frame 3 is also prevented from being lifted too high, the climbing frame 3 and the standard section 41 have larger gaps, are weightless and unstable, and incline and tilt when lifting occurs, so that a large potential safety hazard or safety accident is caused.
The operation of this embodiment is as follows:
before the suspended ceiling of the tower rises, the lower support frame 13 is fixed, and the whole length of the lower support frame 13 is adjusted based on the specification of the standard section 41;
when the tower suspended ceiling is lifted, the supporting base 21 of the hydraulic jack 2 is in a fixed state with the standard joint 41, the climbing sleeve frame 3 is in a separated state with the standard joint 41, the hydraulic jack 2 is started, and the hydraulic jack 2 drives the whole climbing sleeve frame 3 to lift;
when the lower contact switch 12 touches the upper contact switch 14, the switch power supply is disconnected, the jacking is stopped, at the moment, the upper end of the climbing sleeve frame 3 is just provided with a space which can be filled into a standard joint 41, the climbing sleeve frame 3 is prevented from jacking too high, the climbing sleeve frame 3 and the standard joint 41 have larger gap, weightlessness and instability, and the climbing sleeve frame is inclined and tilted during jacking to cause larger potential safety hazards or safety accidents.
The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification, equivalent replacement, and improvement of some of the technical features described in the foregoing embodiments are all within the scope of the present utility model.
Claims (6)
1. The utility model provides a stop device is used in tower crane jacking, includes spacing subassembly (1), its characterized in that:
the limiting assembly (1) is arranged at the side of the hydraulic jack (2), a cylinder body of the hydraulic jack (2) is vertically fixed on the side surface of the climbing sleeve frame (3), the climbing sleeve frame (3) is sleeved at the upper end of the tower body (4), the two are detachably and fixedly connected, and the tower body (4) is formed by splicing a plurality of standard sections (41) fixed at the head and the tail;
the limiting assembly (1) comprises an upper supporting frame (11), a lower contact switch (12), a lower supporting frame (13) and an upper contact switch (14);
the upper supporting frame (11) is made of L-shaped flat steel and is fixed on a cylinder body of the hydraulic jack (2), and the lower contact switch (12) is arranged at the top of a transverse plate of the upper supporting frame (11);
the bottom of the lower support frame (13) is fixed on the side face of the standard section (41) below the climbing sleeve frame (3), the top end of the lower support frame (13) is L-shaped, the upper contact switch (14) is arranged at the bottom of a top transverse plate of the lower support frame (13), and the upper contact switch (14) and the lower contact switch (12) are oppositely arranged.
2. A tower crane lifting stop according to claim 1, wherein the stop assembly (1) further comprises a distance sensor (15);
the distance sensor (15) is also arranged at the bottom of the top transverse plate of the lower support frame (13) and is used for measuring the distance between the upper contact switch (14) and the lower contact switch (12).
3. The limiting device for tower crane jacking according to claim 1, wherein the lower support frame (13) comprises an outer frame body (131) and an L-shaped inner frame body (132);
the novel electric trolley is characterized in that a sliding groove (133) is formed in the inner side face of the outer frame body (131), the L-shaped inner frame body (132) is in sliding fit with the sliding groove (133), the bottom end of the L-shaped inner frame body (132) is fixedly connected with the end portion of a piston rod of the electric push rod (134), and a cylinder body of the electric push rod (134) is fixed in the sliding groove (133).
4. A tower crane lifting limiting device according to claim 3, wherein a U-shaped connecting portion (135) is provided at the bottom end of the outer frame body (131), and the entire lower support frame (13) is fixed on the standard section (41) through the U-shaped connecting portion (135).
5. The limiting device for tower crane lifting according to claim 1, wherein a supporting base (21) is fixed at the end part of a piston rod of the hydraulic jack (2), and the supporting base (21) is detachably and fixedly connected with the standard joint (41).
6. The limiting device for tower crane jacking according to claim 1, wherein the limiting assembly (1) and the hydraulic jack (2) are respectively provided with two limiting assemblies which are symmetrically distributed on two sides of the climbing sleeve frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321098294.7U CN219751738U (en) | 2023-05-09 | 2023-05-09 | Limiting device for jacking tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321098294.7U CN219751738U (en) | 2023-05-09 | 2023-05-09 | Limiting device for jacking tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219751738U true CN219751738U (en) | 2023-09-26 |
Family
ID=88070858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321098294.7U Active CN219751738U (en) | 2023-05-09 | 2023-05-09 | Limiting device for jacking tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219751738U (en) |
-
2023
- 2023-05-09 CN CN202321098294.7U patent/CN219751738U/en active Active
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