Multipurpose tower crane and use method thereof

Abstract

The invention discloses a multipurpose tower crane and a use method thereof, and the multipurpose tower crane is characterized in that a concrete conveying pipeline, a quick joint, a rotary conveying pump and a hose suspension system are integrated, so that the integration of vertical transportation and concrete conveying functions is realized; a conveying pipe, a cargo boom steel cable hanging hose and an electromagnetic device are arranged in the tower body standard section, and hose management is simplified; the device obviously reduces the construction cost, improves the concrete conveying efficiency of the super high-rise building, and is suitable for intensive construction of large engineering projects; compared with the prior art, the tower crane has the following advantages: 1, function integration: the tower crane has vertical transportation and concrete conveying functions, and the equipment utilization rate is increased by more than 50%; 2, the cost is saved: the rental expense of a concrete delivery pump truck is saved, and the comprehensive construction cost is reduced by 30%; efficient conveying is achieved, the concrete conveying height can reach 500 m, and the requirement of a super high-rise building is met; operation is convenient, the pipeline installation efficiency is improved by 70% through the design of a quick connector, and hose management is simplified through an electromagnetic adsorption device.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, specifically to a multi-purpose tower crane and a method for using the same, which is particularly suitable for the integrated operation of concrete delivery and vertical transportation in high-rise buildings, aiming to reduce dependence on dedicated concrete delivery equipment and lower construction costs. Background Art

[0002] In construction, it is necessary to equip tower cranes, concrete mixer trucks, concrete pump trucks and other construction machinery; Tower cranes are the most commonly used lifting equipment on construction sites. They are primarily used for vertical transportation in high-rise buildings. They typically consist of a tower body, boom, counter-jib, tower cap, foundation, slewing mechanism, traveling mechanism, lifting mechanism, and electrical system. They can be flexibly deployed at different construction sites to adapt to various complex building environments. A concrete mixer truck is a specialized truck used to transport concrete for construction. Due to its appearance, it is often called a "snail truck." These trucks are equipped with a cylindrical mixing drum to carry the mixed concrete. The drum rotates constantly during transportation to prevent the concrete from solidifying. A concrete pump truck is a type of concrete pump that is mounted on a vehicle chassis and equipped with a retractable or flexible placing boom. A concrete pump truck is a type of concrete pump that is mounted on a vehicle chassis and equipped with a retractable or flexible placing boom. A concrete pump truck is also what we usually call a boom pump. Therefore, discussing the difference between a concrete pump and a concrete pump truck is also discussing the difference between a concrete pump and a boom pump. During construction, a concrete pump truck is needed to transport the concrete in the concrete mixer truck to the top of the building. On the one hand, with the real estate market disappearing, it is obviously not economical to equip a concrete pump truck. On the other hand, the concrete pump truck cannot reach the height required for ultra-high floors. In addition, at the end of many projects, after the concrete pump truck has left the site, it is discovered that some concrete still needs to be transported to the upper floors. In this case, the concrete pump truck has to be arranged to enter the site again, which increases construction expenses. Summary of the Invention

[0003] The present invention aims to provide a multi-purpose tower crane and a method for using the same, which realizes the concrete conveying function of the tower crane through structural innovation, reduces dependence on special equipment, and improves construction efficiency and economy.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A multi-purpose tower crane comprises a tower body, a boom, a balancing arm, a slewing mechanism, a tower head, a traveling mechanism, a lifting mechanism and a concrete conveying system; the tower body is composed of a number of standard sections, a concrete conveying pipe is fixed on the inner side of each standard section, and adjacent conveying pipes are connected by quick-connect joints; the slewing mechanism is equipped with a conveying pump, the inlet of which is connected to the tower top conveying pipe, and the outlet is connected to the concrete conveying hose; the boom is a horizontal pulling steel cable, the hose is suspended from the steel cable through a pulley, and the front end is fixed to the traveling mechanism.

[0005] Furthermore, the present application provides a multi-purpose tower crane, wherein the quick-connect joint is a male-female structure, the male head is inserted into the female head and locked by a snap, and the sealing ring ensures that there is no leakage at the connection.

[0006] Furthermore, the present application provides a multi-purpose tower crane, wherein a clamp-type ultrasonic flowmeter is installed at the front end of the concrete delivery hose to monitor the flow in real time and feed back to the control system, with a flow accuracy error of ≤±1%.

[0007] Furthermore, the present application provides a multi-purpose tower crane, wherein an adsorption block is provided at the front end of the hose fixing trolley, and an electromagnetic slot is provided at the rear end of the walking mechanism; when the electromagnetic device is energized, the adsorption block and the slot are locked, and the dragging force is ≥500N.

[0008] Furthermore, the present application provides a multi-purpose tower crane, wherein the steel cables are installed with clips with rollers at intervals of 1-2 meters, the rollers are made of nylon or polyurethane, and the friction coefficient is ≤0.1.

[0009] Furthermore, the present application provides a multi-purpose tower crane, wherein the delivery pump is a hydraulically driven plunger pump with a maximum delivery pressure of 10 MPa and an adjustable delivery range of 5-50 m³ / h.

[0010] Furthermore, the present application provides a multi-purpose tower crane, wherein the inner diameter of the concrete conveying pipe of the standard section is 100-200 mm, the wall thickness is 5-10 mm, and the pressure resistance grade is ≥2.5 MPa.

[0011] A second object of the present application is to provide a method for using a multi-purpose tower crane, which comprises the following steps: Step 1: Build the tower body and connect the concrete delivery pipes of the standard sections section by section; Step 2: Start the delivery pump and pump the concrete through the delivery pipe to the hose; Step 3: The walking mechanism moves the hose to the pouring point to complete the concrete delivery; Step 4: Switch the delivery pump to cleaning mode to flush the pipes and hoses; Step 5: The electromagnetic adsorption device controls the hose to reset to avoid damage during non-operation periods.

[0012] The core innovations are as follows: 1. Integrated concrete delivery pipeline: The tower body is composed of several standard sections, and a stainless steel concrete delivery pipe is fixed inside each standard section.

[0013] Quick connectors are installed at both ends of the conveying pipe, and adjacent standard sections are quickly connected through male and female quick connectors to form a continuous conveying channel.

[0014] 2. Rotary mechanism integrated delivery pump: The conveying pump is installed on the rotary mechanism, the inlet of which is connected to the tower top conveying pipe, and the outlet is connected to the concrete conveying hose.

[0015] 3. Crane arm conveying system: The crane arm pulls the steel cable horizontally, clips with rollers are installed at intervals on the steel cable, and the concrete delivery hose is suspended on the steel cable through a pulley.

[0016] The front end of the hose is fixed to the traveling mechanism and is equipped with a clamp-type ultrasonic flow meter to monitor the concrete flow in real time.

[0017] 4. Hose fixing and electromagnetic adsorption device: The hose fixing trolley is installed on the crane arm, with an adsorption block at the front end and an electromagnetic card slot at the rear end of the walking mechanism.

[0018] When the electromagnetic device is energized, the adsorption block and the card slot are locked, realizing the dragging and resetting of the hose. Beneficial effects

[0019] Compared with the prior art, the present invention has the following advantages: 1. Functional integration: Tower cranes combine vertical transportation and concrete delivery functions, increasing equipment utilization by more than 50%.

[0020] 2. Cost saving: eliminating the cost of concrete pump truck rental and reducing overall construction costs by 30%.

[0021] 3. Efficient transportation: The concrete transportation height can reach 500 meters, meeting the needs of super high-rise buildings.

[0022] 4. Easy to operate: The quick-connect connector design increases pipeline installation efficiency by 70%, and the electromagnetic adsorption device simplifies hose management. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a multi-purpose tower crane of the present invention, showing the tower body, lifting arm, delivery pump and hose system layout; Figure 2 This is a schematic diagram of the standard section structure of a multi-purpose tower crane of the present invention, showing in detail the quick-connect joint structure of the concrete delivery pipe; Figure 3This is an assembly relationship diagram of a boom, tower head, slewing mechanism, traveling mechanism and lifting mechanism in a multi-purpose tower crane of the present invention; Figure 4 This is a partial structural diagram of a multi-purpose tower crane of the present invention, illustrating the coordinated mechanism of the hose fixing trolley, the adsorption block and the electromagnetic clamping slot.

[0024] Among them: 1. Tower body; 2. Lifting arm; 3. Balance arm; 4. Tower head; 5. Slewing mechanism; 6. Traveling mechanism; 7. Lifting mechanism; 8. Standard section; 9. Concrete delivery pipe; (10, 11) Quick connector; 12. Delivery pump; 13. Steel cable; 14. Concrete delivery hose; 15. Clamp-type ultrasonic flowmeter; 16. Hose fixing trolley; 17. Adsorption block; 18. Card slot. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] like Figures 1 to 4As shown, this embodiment provides a multi-purpose tower crane, which includes a tower body 1, a boom 2, a balance arm 3, a tower head 4, a slewing mechanism 5, a traveling mechanism 6, a lifting mechanism 7 and a concrete conveying system; the tower body 1 is composed of a number of standard sections 8, each of which is fixed with a concrete conveying pipe 9 on the inside, and adjacent conveying pipes 9 are connected by quick connectors 10, 11; the slewing mechanism 5 is equipped with a conveying pump 12, the inlet of which is connected to the tower top conveying pipe 9, and the outlet is connected to the concrete conveying hose 14; the boom 2 is a horizontal pulling steel cable 13, and the concrete conveying hose 14 is suspended on the steel cable 13 through a pulley, and the front end is fixed to the traveling mechanism 6; the quick connectors 10, 11 are male and female structures, and the male head 11 is inserted into the female head 10 and locked by a buckle, and the sealing ring ensures that there is no leakage at the connection. Leakage; a clamp-type ultrasonic flowmeter 15 is installed at the front end of the concrete delivery hose 14 to monitor the flow in real time and feed it back to the control system, with a flow accuracy error of ≤±1%; an adsorption block 17 is provided at the front end of the hose fixing trolley 16, and an electromagnetic card slot 18 is provided at the rear end of the walking mechanism 6; after the electromagnetic device is energized, the adsorption block 17 and the card slot 18 are locked, and the drag force is ≥500N; the steel cable 13 is installed with clips with rollers at intervals of 1-2 meters, and the rollers are made of nylon or polyurethane with a friction coefficient of ≤0.1; the delivery pump 12 is a hydraulically driven plunger pump with a maximum delivery pressure of 10MPa and an adjustable delivery range of 5-50m³ / h; the inner diameter of the concrete delivery pipe 9 of the standard section 8 is 100-200 mm, the wall thickness is 5-10 mm, and the pressure resistance level is ≥2.5MPa.

[0029] Working process and principle: During the construction of the tower crane, the construction of the standard section 8 is gradually completed with the help of the sleeve. During the construction process, it is necessary to ensure that the quick-connect male head of the upper standard section 8 is aligned with the quick-connect female head of the lower standard section 8 to ensure that the adjacent concrete delivery pipes 9 are securely connected. The slewing mechanism 5 is installed on the delivery pump 12, and the quick-connect female head 10 of the uppermost concrete delivery pipe 9 is connected to the inlet of the delivery pump 12. The rear end of the concrete delivery hose 14 hung on the steel cable 13 is connected to the outlet of the delivery pump 12, and the front end is installed on the walking mechanism 6. In this way, when pouring is required, it is only necessary to connect the concrete mixer truck to the lowermost concrete delivery pipe 9, and the slewing mechanism 5 cooperates with the walking mechanism 6 to bring the front end of the concrete delivery hose 14 to the place where pouring is required. Start the delivery pump 12, and the concrete will pass through the concrete delivery pipe 9, delivery pump 12, and concrete delivery hose 14 in sequence and be poured at the destination, eliminating the rental link of the concrete delivery pump 12 and reducing construction expenses.

[0030] 1. Tower crane construction and pipeline connection 1) Install the standard sections 8 one by one, ensuring that the upper quick-connect male connector 11 is accurately inserted into the lower quick-connect female connector 10 to form a continuous conveying pipeline.

[0031] 2) The bottom layer of the delivery pipe 9 is connected to the outlet of the concrete mixer truck, and the top layer is connected to the inlet of the delivery pump 12.

[0032] 2. Concrete delivery process 1) Start the delivery pump 12 and pump the concrete through the delivery pipe 9 to the delivery hose 14 of the crane arm 2.

[0033] 2) The traveling mechanism 6 drives the front end of the hose to move to the pouring point, and the clamp-on flow meter 15 monitors the flow in real time.

[0034] 3) After pouring is completed, the delivery pump 12 is switched to the cleaning mode, and water flows to flush the pipes and hoses until the flow meter 15 shows that the cleaning standard is met.

[0035] 3. Hose fixing and resetting 1) When not in operation, the traveling mechanism 6 retreats to the vicinity of the slewing mechanism 5, and the adsorption block 17 and the locking slot 18 are electromagnetically locked.

[0036] 2) Drag the hose fixing trolley 16 to the target position. After the electromagnetic device is powered off, the hose is reset to avoid bending damage. Example

[0037] Take the construction of a super high-rise building as an example: 1) The tower crane is 300 meters high, has 150 standard sections (8), and a conveying pipe (9) with a total length of 300 meters.

[0038] 2) The single concrete delivery volume is 10 cubic meters, the delivery time is 15 minutes, and the delivery height error is less than ±0.5 meters.

[0039] 3) Save approximately RMB 2 million in concrete pump truck rental costs during the construction period.

[0040] Anything not described in detail in the present invention is well known to those skilled in the art.

[0041] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A multi-purpose tower crane, characterized in that: The invention comprises a tower body (1), a lifting arm (2), a balancing arm (3), a tower head (4), a slewing mechanism (5), a walking mechanism (6), a lifting mechanism (7) and a concrete conveying system; the tower body (1) is composed of a plurality of standard sections (8), a concrete conveying pipe (9) is fixed inside each standard section (8), and adjacent conveying pipes (9) are connected via quick-connect joints (10, 11); a conveying pump (12) is installed on the slewing mechanism (5), the inlet of which is connected to the tower top conveying pipe (9), and the outlet is connected to the concrete conveying hose (14); the lifting arm (2) is horizontally pulled by a steel cable (13), the hose (14) is suspended on the steel cable (13) via a pulley, and the front end is fixed to the walking mechanism (6).

2. The multi-purpose tower crane according to claim 1, characterized in that: The quick-connect joint (10, 11) is a male-female structure. The male head (11) is inserted into the female head (10) and locked by a snap lock. The sealing ring ensures that there is no leakage at the connection.

3. The multi-purpose tower crane according to claim 1, characterized in that: A clamp-type ultrasonic flowmeter (15) is installed at the front end of the concrete delivery hose (14) to monitor the flow in real time and feed back to the control system, with a flow accuracy error of ≤±1%.

4. The multi-purpose tower crane according to claim 1, characterized in that: The front end of the hose fixing trolley (16) is provided with an adsorption block (17), and the rear end of the walking mechanism (6) is provided with an electromagnetic clamping slot (18); after the electromagnetic device is energized, the adsorption block (17) and the clamping slot (18) are locked, and the dragging force is ≥500N.

5. The multi-purpose tower crane according to claim 1, characterized in that: The steel cables (13) are provided with clips with rollers at intervals of 1-2 meters. The rollers are made of nylon or polyurethane, and have a friction coefficient of ≤0.

1.

6. The multi-purpose tower crane according to claim 1, characterized in that: The delivery pump (12) is a hydraulically driven plunger pump with a maximum delivery pressure of 10 MPa and an adjustable delivery range of 5-50 m 3 / h.

7. The multi-purpose tower crane according to claim 1, characterized in that: The concrete delivery pipe (9) of the standard section (8) has an inner diameter of 100-200 mm, a wall thickness of 5-10 mm, and a pressure resistance level of ≥2.5 MPa.

8. A method for using a multi-purpose tower crane, characterized in that: The following steps are involved: Step 1: Build the tower body (1) and connect the concrete delivery pipe (9) of the standard section (8) section by section; Step 2: Start the delivery pump (12) to pump the concrete through the delivery pipe (9) to the hose (14); Step 3: The walking mechanism (6) moves the hose (14) to the pouring point to complete the concrete delivery; Step 4: Switch the delivery pump (12) to the cleaning mode to flush the pipe and hose (14); Step 5: The electromagnetic adsorption device controls the hose (14) to reset to avoid damage during non-operation period.

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