CN114229716A - Telescopic tower crane convenient to lift and use method thereof - Google Patents
Telescopic tower crane convenient to lift and use method thereof Download PDFInfo
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- CN114229716A CN114229716A CN202111638711.8A CN202111638711A CN114229716A CN 114229716 A CN114229716 A CN 114229716A CN 202111638711 A CN202111638711 A CN 202111638711A CN 114229716 A CN114229716 A CN 114229716A
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- tower body
- seat
- telescopic
- tower
- tower crane
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
- B66C23/30—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of telescopic elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Abstract
The invention provides a telescopic tower crane convenient to lift and use and a use method thereof, wherein the telescopic tower crane comprises a sliding seat, an opening containing cavity is arranged at the upper end of the sliding seat, and one side of a tower body, far away from a crane boom, is arranged in the sliding seat in a sliding manner; the outer side of the sliding seat is provided with at least one pair of hydraulic cylinders, one ends of telescopic rods of the hydraulic cylinders in pairs are rotationally fixed on two sides of the tower body, the other ends of telescopic rods of the hydraulic cylinders are rotationally fixed on a pair of moving seats, the moving seats are arranged on the base, and the moving seats can move along a straight line on the base and are fixed. The hydraulic cylinders are arranged on the outer sides of the sliding seats in pairs and are connected with the side face of the tower body. The height of the force application point for lifting the tower body is improved, and the overall structure is more stable. Moreover, the inclination angle of the hydraulic cylinder can be adjusted to form a proper triangular support structure. Therefore, the transverse stress situation can be adapted.
Description
Technical Field
The invention relates to the field of advanced manufacturing and automation, in particular to a telescopic tower crane convenient to lift and a using method thereof.
Background
Background: chinese utility model with application number 201520660166.6 discloses a liftable tower crane, as shown in fig. 1, a hydraulic lifter is arranged below the tower body, and the tower body is limited to slide in a slide way formed by reinforcing rods. The lifting driving device of the lifting tower crane is arranged on the inner side of the reinforcing rod, the transverse bearing capacity of the whole structure is weaker, and the lifting driving device cannot adapt to the condition that the tower body tilts due to transverse stress such as strong wind. However, if the slide way body corresponding to the reinforcing rod is made into a reinforced base body, the overall bulkiness of the crane is deepened.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the telescopic tower crane which is convenient to lift, has more stable overall structure and can adapt to the transverse stress condition.
The invention also provides a using method of the telescopic tower crane convenient to lift, and the telescopic tower crane is convenient to operate and good in flexibility.
In order to achieve the purpose, the invention is realized by the following technical scheme: a conveniently liftable, telescopic tower crane, comprising: the utility model provides a be convenient for lift, telescopic tower crane, includes the tower body, the tower body top is equipped with the jib loading boom, jib loading boom both ends are equipped with the coaster, are equipped with the lifting hook on the coaster of jib loading boom one end, the other end be equipped with the balancing weight on the coaster. In addition, the tower crane further comprises a sliding seat, an opening containing cavity is formed in the upper end of the sliding seat, and one side, far away from the crane boom, of the tower body is arranged in the sliding seat in a sliding mode; the outer side of the sliding seat is provided with at least one pair of hydraulic cylinders, one ends of telescopic rods of the hydraulic cylinders in pairs are rotationally fixed on two sides of the tower body, the other ends of telescopic rods of the hydraulic cylinders are rotationally fixed on a pair of moving seats, the moving seats are arranged on the base, and the moving seats can move along a straight line on the base and are fixed.
In the device, the tower body is arranged in the sliding seat, and the hydraulic cylinders are arranged outside the sliding seat in pairs and are connected with the side surface of the tower body. Therefore, the height of the force application point for lifting the tower body is improved, and the whole structure is more stable. And the hydraulic cylinder is arranged on a movable seat with adjustable distance from the sliding seat, and the inclination angle of the hydraulic cylinder can be adjusted by adjusting the position of the movable seat according to the requirement to form a proper triangular support structure. Therefore, the transverse stress situation can be adapted. Therefore, the telescopic tower crane convenient to lift has the advantages of being stable in structure, good in flexibility, light in overall weight and low in manufacturing cost.
Furthermore, the telescopic tower crane convenient to lift is fixed with the screw shaft in the top rotation of base, remove the seat cover and establish on the screw shaft, correspond the screw shaft, be equipped with the screw on removing the seat. In a preferred embodiment of the present invention, the movable base may be fixed by a method of adjusting the screw continuously or intermittently by a method of inserting a positioning pin into a positioning hole provided at an interval on a sliding path of the movable base corresponding to the base.
Furthermore, the telescopic tower crane convenient to lift is characterized in that screw shafts corresponding to a pair of movable seats on two sides of the tower body are arranged on a long shaft, the long shaft penetrates through the sliding seat, the screw shafts are arranged at two ends of the long shaft, and the screw thread directions of the screw shafts on the two sides are opposite.
Furthermore, the telescopic tower crane convenient to lift further comprises a driving motor, the driving motor is fixed on the base, and the driving motor is in transmission connection with the long shaft.
Furthermore, the telescopic tower crane convenient to lift is characterized in that a sliding groove is formed in the base, and the moving seat is arranged in the sliding groove.
Furthermore, the telescopic tower crane convenient to lift is characterized in that bosses are fixedly arranged on the tower body, hinge bases are symmetrically fixed on the outer sides of the bosses in pairs relative to the symmetrical plane of the tower body, and the end parts of telescopic rods of the hydraulic cylinders are rotatably connected with the hinge bases through pivots.
Further, a be convenient for lift, telescopic tower crane, the bottom that the slide opening holds the chamber is equipped with spring seat portion, spring seat portion includes a set of spring and bedplate, the bedplate is fixed the spring top, the bedplate one end is kept away from to the spring is fixed slide opening holds chamber bottom. As the preferred scheme of the invention, the spring seat part is arranged, on one hand, the spring seat part plays a role in buffering when the tower body falls and resets, and on the other hand, the spring seat part is used for offsetting the static friction force when part of the tower body is started, so that the load bearing standard selected by the hydraulic cylinder can be reduced, and the whole structure is lighter while the load bearing is ensured.
Further, the tower crane convenient to lift and retract is characterized in that one side, close to the tower body, of the base plate is provided with a contact switch, and the contact switch is electrically connected with the hydraulic cylinder oil pump controller.
The invention relates to a using method of a telescopic tower crane convenient to lift, which comprises the following steps:
s1: installing the tower body in an open cavity of a sliding seat, and placing the tower body and the bottom on the seat plate;
s2: the hydraulic oil pump of the hydraulic cylinder stops pumping oil, at the moment, the telescopic rod of the hydraulic cylinder can freely stretch and move, and the driving motor is started to rotate the long shaft so as to move the movable seat to a proper position;
s3: starting a hydraulic oil pump of the hydraulic cylinder, starting oil pumping, and controlling the hydraulic cylinder to eject the tower body to a specified position and stop;
s4: the crane carries out hoisting operation;
s5: after the hoisting operation is completed, the hydraulic cylinder drives the tower body to retract and reset, when the bottom of the tower body contacts a contact switch, the hydraulic cylinder oil pump stops working, the tower body falls to an initial position by means of self weight, and the spring seat portion buffers the tower body.
Wherein, set up contact switch is used for stopping oil pump work in advance, can play the effect of practicing thrift the energy consumption.
The technical scheme shows that the invention has the following beneficial effects:
1. the invention provides a telescopic tower crane convenient to lift, wherein a tower body is arranged in a sliding seat, and hydraulic cylinders are arranged outside the sliding seat in pairs and are connected with the side surface of the tower body. Therefore, the height of the force application point for lifting the tower body is improved, and the whole structure is more stable. And the hydraulic cylinder is arranged on a movable seat with adjustable distance from the sliding seat, and the inclination angle of the hydraulic cylinder can be adjusted by adjusting the position of the movable seat according to the requirement to form a proper triangular support structure. Therefore, the transverse stress situation can be adapted. Therefore, the telescopic tower crane convenient to lift has the advantages of being stable in structure, good in flexibility, light in overall weight and low in manufacturing cost.
2. The invention provides a telescopic tower crane convenient to lift, which is simple and efficient in adjusting mechanism and convenient to operate.
3. The invention provides a telescopic tower crane convenient to lift, which is provided with a spring seat part, so that the spring seat part plays a role in buffering when a tower body falls and resets, and the spring seat part is used for offsetting partial static friction force during starting, thereby reducing the load bearing standard selected by a hydraulic cylinder, ensuring the load bearing and saving the cost.
4. The invention provides a use method of a telescopic tower crane convenient to lift, wherein after the lifting operation is finished, a hydraulic cylinder drives a tower body to retract and reset, when the bottom of the tower body is in contact with a contact switch, an oil pump of the hydraulic cylinder stops working, the tower body falls to an initial position by self weight, and a spring seat part buffers the tower body. Therefore, the contact switch is used for stopping the oil pump in advance, and the effect of saving energy consumption can be achieved.
Drawings
FIG. 1 is a schematic view of a liftable tower crane according to the background art;
FIG. 2 is a schematic structural diagram of a telescopic tower crane convenient for lifting and lowering according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged fragmentary view taken within area D of FIG. 2;
fig. 5 is a schematic structural diagram of the hydraulic cylinder tilting state of the telescopic tower crane convenient for lifting and lowering.
In the figure: 1-a tower body; 11-a crane boom; 12-a sled; 13-a hook; 14-a counterweight block; 15-boss; 151-hinge mount; 2-a slide seat; 21-a spring seat portion; 211-a spring; 212-a seat plate; 2121-contact switch; 3-a hydraulic cylinder; 4-moving the seat; 5-a base; 51-a sliding groove; 6-long axis; 61-screw shaft; 7-driving a motor; 91-a tower body; 92-a hydraulic lifter; 93-reinforcing bar.
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 or similar 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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used 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, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 2 to 5, the tower crane convenient to lift and retract comprises a tower body 1, wherein a crane boom 11 is arranged at the top of the tower body 1, two ends of the crane boom are respectively provided with a pulley 12, a lifting hook 13 is arranged on the pulley 12 at one end of the crane boom 11, and a balancing weight 14 is arranged on the pulley 12 at the other end. The tower crane further comprises a sliding seat 2, an opening containing cavity is formed in the upper end of the sliding seat 2, and the side, far away from the crane arm 11, of the tower body 1 is arranged in the sliding seat 2 in a sliding mode; and 1 pair of hydraulic cylinders 3 are arranged on the outer side of the sliding seat 2, one ends of telescopic rods of the hydraulic cylinders 3 in pairs are rotationally fixed on two sides of the tower body 1, and the other ends of the telescopic rods are rotationally fixed on a pair of movable seats 4. In this embodiment, a boss 15 is fixed on the tower body 1, hinge bases 151 are symmetrically fixed in pairs on the outer side of the boss 15 relative to the symmetric plane of the tower body 1, and the end of the telescopic rod of the hydraulic cylinder 3 is rotatably connected with the hinge bases 151 through a pivot.
Further, the movable base 4 is provided on a base 5, and the movable base 4 is linearly movable on the base 5 and is fixed. In this embodiment, the top of base 5 is rotated and is fixed with screw shaft 61, remove 4 covers of seat and establish on screw shaft 61, correspond screw shaft 61, be equipped with the screw on the removal seat 4. The pair of screw shafts 61 are provided on one long shaft 6, the long shaft 6 is inserted into the slide carriage 2, the screw shafts 61 are provided on both ends of the long shaft 6, and the screw shafts 61 on both sides have opposite screw threads. The device is characterized by further comprising a driving motor 7, wherein the driving motor 7 is fixed on the base 5, and the driving motor 7 is in transmission connection with the long shaft 6. The base 5 is provided with a sliding groove 51, and the movable seat 4 is arranged in the sliding groove 51.
Further, a spring seat portion 21 is arranged at the bottom of the open cavity of the sliding seat 2, the spring seat portion 21 includes a set of spring 211 and a seat plate 212, the seat plate 212 is fixed above the spring 211, and one end of the spring 211, which is far away from the seat plate 212, is fixed at the bottom of the open cavity of the sliding seat 2. And, a contact switch 2121 is arranged on one side of the seat plate 212 close to the tower body 1, and the contact switch 2121 is electrically connected with the oil pump controller of the hydraulic cylinder 3.
The working method of the telescopic tower crane convenient to lift comprises the following steps:
s1: the tower body 1 is arranged in an open cavity of a sliding seat 2, and the tower body 1 and the bottom are placed on the seat plate 212;
s2: the hydraulic oil pump of the hydraulic cylinder 3 stops pumping oil, at the moment, the telescopic rod of the hydraulic cylinder 3 can freely stretch and move, the driving motor 7 is started to rotate the long shaft 6, and the movable seat 4 is moved to a proper position;
s3: starting a hydraulic oil pump of the hydraulic cylinder 3, starting oil pumping, and controlling the hydraulic cylinder 3 to eject out the tower body 1 to a specified position to stop;
s4: the crane carries out hoisting operation;
s5: after the hoisting operation is completed, the hydraulic cylinder 3 drives the tower body 1 to retract and reset, when the bottom of the tower body 1 contacts the contact switch 2121, the hydraulic cylinder 3 stops working by an oil pump, at the moment, the tower body 1 falls to an initial position by self weight, and the spring seat part 21 buffers the tower body 1.
Based on the structure and the method, in the telescopic tower crane convenient to lift, the tower body 1 is arranged in the sliding base 2, and the hydraulic cylinders 3 are arranged outside the sliding base 2 in pairs and are connected with the side surface of the tower body 1. Therefore, the height of the force application point of the lifting tower body 1 is improved, and the whole structure is more stable. And, the pneumatic cylinder 3 sets up on adjustable and the removal seat 4 of slide 2 distance, can be as required through the position of adjusting removal seat 4, the inclination of adjustment pneumatic cylinder 3 forms a suitable triangle-shaped bearing structure. Therefore, the transverse stress situation can be adapted. Therefore, the telescopic tower crane convenient to lift has the advantages of being stable in structure, good in flexibility, light in overall weight and low in manufacturing cost.
Besides the continuous screw adjustment described in this embodiment, a method of intermittently moving and fixing may be adopted: for example, positioning holes are provided at intervals on the sliding path of the base 5 corresponding to the movable base 4, and the movable base 4 is fixed by inserting positioning pins or the like.
In addition, set up spring seat portion 21, play the effect of buffering when the body of the tower 1 whereabouts resets on the one hand, on the other hand for the static friction when offsetting partial start, thereby can reduce the bearing standard that pneumatic cylinder 3 chooseed for use, overall structure is lighter-weight more when guaranteeing the bearing.
And, the contact switch 2121 is provided to stop the oil pump in advance, which can achieve the effect of saving energy consumption.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. A telescopic tower crane convenient to lift comprises a tower body (1), wherein a cargo boom (11) is arranged at the top of the tower body (1), pulleys (12) are arranged at two ends of the cargo boom, a lifting hook (13) is arranged on the pulley (12) at one end of the cargo boom (11), and a balancing weight (14) is arranged on the pulley (12) at the other end; the method is characterized in that: the tower crane further comprises a sliding seat (2), an opening containing cavity is formed in the upper end of the sliding seat (2), and one side, far away from the crane arm (11), of the tower body (1) is arranged in the sliding seat (2) in a sliding mode; slide (2) outside is equipped with at least a pair of pneumatic cylinder (3), and is in pairs pneumatic cylinder (3) telescopic link one end is rotated and is fixed body of tower (1) both sides, and the other end rotates and fixes on a pair of removal seat (4), remove seat (4) and set up on base (5), remove seat (4) can follow rectilinear movement and fixed on base (5).
2. A telescopic tower crane facilitating lifting and lowering according to claim 1, further comprising: the top of base (5) is rotated and is fixed with screw shaft (61), it establishes to remove seat (4) cover screw shaft (61) is last, corresponds screw shaft (61), be equipped with the screw on removing seat (4).
3. A telescopic tower crane facilitating lifting and lowering according to claim 2, further comprising: screw shaft (61) that a pair of removal seat (4) of body of the tower (1) both sides correspond set up on a major axis (6), major axis (6) are worn to establish on slide (2), screw shaft (61) set up major axis (6) both ends, and screw shaft (61) screw thread of both sides is to revolving to opposite.
4. A telescopic tower crane facilitating lifting and lowering according to claim 3, wherein: the device is characterized by further comprising a driving motor (7), wherein the driving motor (7) is fixed on the base (5), and the driving motor (7) is in transmission connection with the long shaft (6).
5. The telescopic tower crane convenient to lift and lower as claimed in claim 4, wherein: the base (5) is provided with a sliding groove (51), and the movable seat (4) is arranged in the sliding groove (51).
6. A telescopic tower crane facilitating lifting and lowering according to any one of claims 1 to 5, wherein: the tower body (1) is fixedly provided with a boss (15), hinge bases (151) are symmetrically fixed on the outer side of the boss (15) in pairs relative to the symmetrical plane of the tower body (1), and the end parts of telescopic rods of the hydraulic cylinders (3) are rotatably connected with the hinge bases (151) through pivots.
7. The telescopic tower crane convenient to lift and lower as claimed in claim 6, wherein: the bottom that slide (2) opening appearance chamber is equipped with spring seat portion (21), spring seat portion (21) are including a set of spring (211) and bedplate (212), bedplate (212) are fixed spring (211) top, bedplate (212) one end is kept away from in spring (211) is fixed slide (2) opening appearance chamber bottom.
8. A telescopic tower crane facilitating lifting and lowering according to claim 7, further comprising: and one side of the seat plate (212) close to the tower body (1) is provided with a contact switch (2121), and the contact switch (2121) is electrically connected with the hydraulic cylinder (3) and the oil pump controller.
9. The method for operating a telescopic tower crane convenient to lift and lower as claimed in claim 8, wherein: the method comprises the following steps:
s1: the tower body (1) is arranged in an open cavity of a sliding seat (2), and the tower body (1) and the bottom are placed on the seat plate (212);
s2: the hydraulic oil pump of the hydraulic cylinder (3) stops pumping oil, at the moment, the telescopic rod of the hydraulic cylinder (3) can freely stretch and move, the driving motor (7) is started to rotate the long shaft (6), and the moving seat (4) is moved to a proper position;
s3: starting a hydraulic oil pump of the hydraulic cylinder (3), starting oil pumping, and controlling the hydraulic cylinder (3) to eject out of the tower body (1) to a specified position and stop;
s4: the crane carries out hoisting operation;
s5: after the hoisting operation is completed, the hydraulic cylinder (3) drives the tower body (1) to retract and reset, when the bottom of the tower body (1) contacts the contact switch (2121), the oil pump of the hydraulic cylinder (3) stops working, the tower body (1) falls to an initial position by self weight at the moment, and the spring seat part (21) buffers the tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638711.8A CN114229716A (en) | 2021-12-29 | 2021-12-29 | Telescopic tower crane convenient to lift and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638711.8A CN114229716A (en) | 2021-12-29 | 2021-12-29 | Telescopic tower crane convenient to lift and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114229716A true CN114229716A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111638711.8A Pending CN114229716A (en) | 2021-12-29 | 2021-12-29 | Telescopic tower crane convenient to lift and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003141A (en) * | 2023-09-28 | 2023-11-07 | 山西省安装集团股份有限公司 | Anti-toppling tower crane chassis |
-
2021
- 2021-12-29 CN CN202111638711.8A patent/CN114229716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003141A (en) * | 2023-09-28 | 2023-11-07 | 山西省安装集团股份有限公司 | Anti-toppling tower crane chassis |
| CN117003141B (en) * | 2023-09-28 | 2023-12-12 | 山西省安装集团股份有限公司 | Anti-toppling tower crane chassis |
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