CN104512818A - Auxiliary device for mounting tower crane - Google Patents

Abstract

The invention discloses an auxiliary device for mounting a tower crane and belongs to the technical field of crane mounting equipment. The auxiliary device comprises no less than one adjusting screw rod (9) and no less than two connecting bars, wherein the adjusting screw rods and the connecting bars work together to adjust the length of the auxiliary device and are alternately arranged and connected. The two ends of the auxiliary device are respectively connected with a balance arm and an upper support through the connecting bars. The adjusting screw rods and the connecting bar together form the auxiliary device; during installation of the tower crane, only one set of lifting equipment is needed to connect the balance arm and the upper support around a hinge point A, and at the moment, the two ends of the auxiliary device are respectively fixed to the balance arm and the upper support to form a stable triangular structure to ensure safer follow-up installation of a lifting beam; when a pin shaft mounted at a hinge point B is malposed, the adjusting screw rods and the connecting bars can work together to change the length of the auxiliary device to perform accurate positioning and adjusting, so that the mounting intensity is low and the operation is easier.

Description

An auxiliary device for installing a tower crane

technical field

The invention relates to an auxiliary device, in particular to an auxiliary device for installing a tower crane, and belongs to the technical field of crane installation equipment.

Background technique

In the existing design, for a tower crane with a triangular connection structure between the boom, the balance arm and the upper support, two or more cranes are required for auxiliary installation during the installation process. As shown in Figure 1, part 1 is the balance arm, part 3 is the lifting arm, part 5 is the upper support, and the upper support 5 is in a fixed state. When installing, first use a lifting device to lift the balance arm 1 , so that it is connected to the upper support 5 through the hinge point A4, keep the lifting equipment to continuously hang the balance arm 1 to balance its own weight, and then use another lifting equipment to lift the boom 3, so that the boom 3 passes through The hinge point C6 is connected with the upper support 5, and finally the balance arm 1 and the jib 3 are connected at the hinge point B2 through the cooperation of two lifting equipment. Stable triangular structure, the lifting equipment can only be evacuated after the assembly is completed.

During use, it was found that the tower crane adopts this kind of installation structure, and there are the following problems:

1. During the installation process, two or more lifting devices need to be used for installation. The installation is relatively limited and the installation cost is relatively high.

2. During the installation of the boom, the pre-installed balance arm is always in the hoisting state, and a stable structure cannot be formed between the balance arm and the upper support, and the installation is more dangerous.

3. During the installation process, the pin shaft at the twist point cannot be adjusted, which makes the installation difficult.

Contents of the invention

In view of the problems existing in the above-mentioned prior art, the present invention provides an auxiliary device for installing a tower crane, which can reduce the use of lifting equipment and reduce production costs; the structure is safe and reliable, and the safety is high; it is convenient to adjust the position of the hinge point, The pin shaft is easy to install.

In order to achieve the above object, the present invention adopts an auxiliary device for installing a tower crane, which includes a number of not less than one adjusting screw and a number of not less than two connecting rods, and the adjusting screw cooperates with the connecting rod to adjust the auxiliary device The length of the adjustment screw and the connecting rod are arranged alternately and connected, and the two ends of the auxiliary device are respectively connected with the balance arm and the upper support through the connecting rod.

Further, the auxiliary device includes an adjusting screw, and the two ends of the adjusting screw are respectively installed with connecting rod I and connecting rod II.

Further, the adjusting screw is screwed in or out of the connecting rod I and the connecting rod II respectively, so as to realize the length adjustment of the auxiliary device.

Further, the connecting rod I is connected to the balance arm through a pin shaft and an ear plate;

The connecting rod II is connected to the upper support through a pin shaft and an ear plate.

Further, the ear plate includes the connecting ear plate I installed on the outer end of the connecting rod I, the connecting ear plate II installed on the outer end of the connecting rod II, the balance arm ear plate that can be installed on the balance arm, and the ear plate that can be installed on the upper support. The lug plate of the upper support, the connecting lug I is matched with the lug plate of the balance arm, and one end of the auxiliary device is connected to the balance arm through the pin shaft;

The connecting ear plate II cooperates with the ear plate of the support, and connects the other end of the auxiliary device to the upper support through a pin shaft.

Further, there are two connecting lugs I, which are respectively installed on both sides of the outer end of the connecting rod I, one balance arm lug is installed in the middle of the two connecting lugs I, and the three are connected through the pin The connection is fixed;

There are two connecting lugs II, respectively installed on both sides of the outer end of the connecting rod II, one upper support lug is installed in the middle of the two connecting lugs II, and the three pass through The pin shaft connection is fixed.

Compared with the installation method of the traditional tower crane, the beneficial effect of the present invention is: by adjusting the screw rod and the connecting rod to form an auxiliary device, when installing the tower crane, only one lifting device needs to be used to connect the balance arm and the upper support. The seat is connected around the hinge point A. At this time, fix the two ends of the auxiliary device on the balance arm and the upper support respectively, so that the three form a stable triangular structure, ensure the stability of the balance arm and the upper support, and ensure the subsequent installation The boom is safer; then use the lifting equipment to hoist the boom, connect one end of the boom to the upper support through the hinge point C, and connect the other end to the balance arm through the hinge point B, the installation is simple and convenient; when installing the hinge point When the pin shaft at B is dislocated, the length of the auxiliary device can be changed through the cooperation of the adjusting screw and the connecting rod, and accurate positioning adjustment can be performed. The installation strength is low and the operation is easier.

Description of drawings

Fig. 1 is the installation structure schematic diagram of jib, balance arm and upper support in existing tower crane;

Fig. 2 is the structural representation of auxiliary device of the present invention;

Fig. 3 is a schematic diagram of the use state of the auxiliary device of the present invention;

In the figure: 1. Balance arm, 2. Knob point B, 3. Lifting arm, 4. Knob point A, 5. Upper support, 6. Knob point C, 7. Pin shaft, 8. Connecting rod I, 8.1 , Connecting lug Ⅰ, 9, Adjusting screw, 10, Connecting rod II, 10.1, Connecting lug II, 11, Balance arm lug, 12, Auxiliary device structure, 13, Upper support lug.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Figure 2, an auxiliary device for installing a tower crane includes a number of not less than one adjusting screw 9 and a number of not less than two connecting rods, the adjusting screw 9 cooperates with the connecting rod to adjust the auxiliary device Length, the adjustment screw 9 is arranged alternately with the connecting rod and connected, and the two ends of the auxiliary device are respectively connected with the balance arm 1 and the upper support 5 through the connecting rod.

The auxiliary device includes an adjusting screw 9, and the two ends of the adjusting screw 9 are respectively equipped with connecting rod I8 and connecting rod II10. In actual production, the number of adjusting screw 9 and connecting rods can be changed according to different length requirements to effectively meet the needs of different towers. The installation requirements of the crane have a wider range of applications.

The adjustment screw 9 is screwed in or out of the connecting rod I8 and the connecting rod II10 respectively to realize the length adjustment of the auxiliary device, the length adjustment is simpler and more convenient, and can meet the installation requirements of cranes of different sizes.

As a further improvement of the embodiment, the connecting rod I8 is connected to the balance arm 1 through the pin shaft 7 and the ear plate;

The connecting rod II10 is connected to the upper support 5 through the pin shaft 7 and the lug plate, and the connection method of the lug plate and the pin shaft 7 is used to make disassembly and assembly easier.

As a further improvement, the ear plate includes the connecting ear plate I8.1 installed on the outer end of the connecting rod I8, the connecting ear plate II10.1 installed on the outer end of the connecting rod II10, the balance arm ear plate 11 that can be installed on the balance arm 1, and the The upper support ear plate 13 installed on the upper support 5, the connecting ear plate I 8.1 cooperates with the balance arm ear plate 11, and one end of the auxiliary device is connected to the balance arm 1 through the pin shaft 7; the connecting ear plate II 10 .1 Cooperate with the ear plate 13 of the support, connect the other end of the auxiliary device to the upper support 5 through the pin shaft 7, and use the mutually matched ear plate and pin shaft 7 to realize the auxiliary device and the balance arm 1, the upper support 5 connections, easy to install and easy to disassemble.

There are two connecting ear plates Ⅰ8.1, which are respectively installed on both sides of the outer end of the connecting rod Ⅰ8, one balance arm ear plate 11, which is installed in the middle of the two connecting ear plates Ⅰ8.1, and the three Connect and fix through pin 7;

There are two connecting lugs II 10.1, which are respectively installed on both sides of the outer end of the connecting rod II 10. There is one upper support lug 13, and the upper support lug 13 is installed on the two connecting lugs II 10.1 In the middle, the three are connected and fixed by the pin shaft 7, and the above-mentioned number of ear plate structures are adopted to fully meet the installation requirements. The overall structure is stable, the service life is long, the safety is high, and the disassembly and assembly are convenient.

As shown in Figure 3, when installing the balance arm 1, the lifting arm 3 and the upper support 5, only one lifting device is needed to lift the balance arm 1 and connect it to the upper support 5 through the hinge point A4. Then install the auxiliary device structure 12 on the balance arm 1 and the upper support 5. The specific installation process is to connect the connecting rod I8 in the auxiliary device structure 12 to the balance arm 1 through the ear plate and the pin shaft 7, and the connecting rod II10 through Ear plates and pin shafts 7 are connected to the upper support 5, so that the balance arm 1, the auxiliary device structure 12, and the upper support 5 form a stable triangular structure, effectively temporarily fixing the balance arm 1 and the upper support 5, and then use The hoisting equipment lifts the boom 3, and the hoisting boom 3 is connected and fixed through the twist point C6, and finally the hoisting boom 3 is connected with the balance arm 1 around the twist point B2. If the pin shaft 7 at the twist point B2 is not installed Appropriate, the length of the auxiliary device structure 12 can be changed by adjusting the screw 9, so that the hinge point B2 can be moved to a suitable position, and the hinge point B2 can be fixed by the pin shaft 7. After the fixing is completed, the auxiliary device structure 12 can be disassembled to complete the balance arm 1. The assembly of the boom 3 and the upper support 5 requires a small amount of lifting equipment during the installation process. Before the installation of the jib 3, the balance arm 1 and the upper support 5 can be effectively fixed, and the safety is high; and During the installation process, the position of the hinge point B2 can be adjusted according to the needs, and it is more convenient to use the pin shaft connection.

Claims (6)

1. An auxiliary device for installing a tower crane, characterized in that it includes not less than one adjusting screw (9) and not less than two connecting rods, the adjusting screw (9) cooperates with the connecting rod To adjust the length of the auxiliary device, the adjusting screw (9) is alternately arranged and connected with the connecting rod, and the two ends of the auxiliary device are respectively connected with the balance arm (1) and the upper support (5) through the connecting rod. 2. A kind of auxiliary device for installing tower crane according to claim 1, it is characterized in that, described auxiliary device comprises an adjusting screw rod (9), and the two ends of adjusting screw rod (9) are installed respectively Rod I (8) and connecting rod II (10). 3. An auxiliary device for installing a tower crane according to claim 2, characterized in that the adjusting screw (9) passes through the connecting rod I (8) and the connecting rod II (10) respectively Screw in or out for length adjustment of auxiliary devices. 4. An auxiliary device for installing a tower crane according to claim 3, characterized in that the connecting rod I (8) is connected to the balance arm (1) through a pin shaft (7) and an ear plate superior; The connecting rod II (10) is connected to the upper support (5) through a pin shaft (7) and an ear plate. 5. An auxiliary device for installing a tower crane according to claim 4, characterized in that, the lug plate includes a connecting lug plate I (8.1) installed on the outer end of the connecting rod I (8), an installation The connecting ear plate II (10.1) at the outer end of the connecting rod II (10), the balance arm ear plate (11) that can be installed on the balance arm (1), the upper support ear that can be installed on the upper support (5) Plate (13), the connecting ear plate I (8.1) cooperates with the balance arm lug (11), and connects one end of the auxiliary device to the balance arm (1) through the pin shaft (7); The connecting ear plate II (10.1) cooperates with the support ear plate (13), and connects the other end of the auxiliary device to the upper support (5) through the pin shaft (7). 6. An auxiliary device for installing a tower crane according to claim 5, characterized in that, there are two connecting lugs I (8.1), which are respectively installed on the outer sides of the connecting rod I (8). On both sides of the end, there is one balance arm ear plate (11), and the balance arm ear plate (11) is installed in the middle of the two connecting ear plates I (8.1), and the three are connected and fixed by the pin shaft (7); There are two connecting ear plates II (10.1), which are respectively installed on both sides of the outer end of the connecting rod II (10), one upper support ear plate (13), and the upper support ear plate (13) is installed on the In the middle of the two connecting ear plates II (10.1), the three are connected and fixed by pin shafts (7).