Tower crane boom with automatic balancing function

Abstract

The utility model discloses a tower crane boom with an automatic balancing function, which comprises a tower frame and a weight box, the upper end of the tower frame is fixedly connected with a tower arm, one end of the upper surface of the tower arm is fixedly provided with a protective fence, a balancing weight is placed in the weight box, one end of the tower arm is provided with an adjusting structure, and the adjusting structure is connected with the tower arm. The adjusting structure comprises a protective cover, a servo motor, a rectangular sliding groove, a threaded rod, a first bearing, a rectangular transmission groove, a transmission rod, a first umbrella-shaped gear, a second bearing and a second umbrella-shaped gear. According to the tower crane boom with the automatic balancing function, when cargoes with different weights are hoisted, the servo motor in the protective cover can be controlled to be started, so that the connecting blocks fixedly mounted at the upper ends of the front surface and the rear surface of the weight box slide on the sliding rails, and the weight box moves left and right in the first groove; therefore, the overall balance of the tower crane is ensured, and the use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, and in particular to a tower crane boom with automatic balancing function. Background Technology

[0002] Tower cranes are a common type of lifting equipment on construction sites. They are typically composed of standard sections and are used to lift raw materials such as steel bars, timber, concrete, and steel pipes. Tower cranes play a vital role in construction and are indispensable equipment on construction sites. The structure of a tower crane mainly includes the tower body, jib, and lifting mechanism. The tower body is the supporting framework of the tower crane, usually composed of multiple steel pipes connected together, and can reach a height of tens of meters. The jib is the extension part of the tower crane, composed of the jib head, jib body, and extension arm, which can extend and rotate at different angles in both horizontal and vertical directions. The lifting mechanism is the core part of the tower crane, used for lifting and transporting heavy objects. However, in traditional tower cranes, the counterweight box is not convenient for position adjustment. Lifting goods of different weights can easily lead to an imbalance in the overall tower crane, failing to meet the usage requirements. Utility Model Content

[0003] The main purpose of this utility model is to provide a tower crane boom with automatic balancing function, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A tower crane boom with automatic balancing function includes a tower frame and a counterweight box. The upper end of the tower frame is fixedly connected to the boom, and a guardrail is fixedly installed on one end of the upper surface of the boom. The counterweight box contains a counterweight block, and one end of the boom is provided with an adjustment structure. The adjustment structure includes a protective cover, a servo motor, a rectangular slide groove, a threaded rod, a first bearing, a rectangular transmission groove, a transmission rod, a first bevel gear, a second bearing, a second bevel gear, a rectangular slider, a connecting block, a slide rail, and a first groove.

[0006] Preferably, a protective cover is fixedly installed on the front surface of the tower arm, and a servo motor is installed inside the protective cover on the front surface of the tower arm. A transmission rod is fixedly connected to the rotating part of the servo motor.

[0007] Preferably, a slot is provided near one end of the tower arm, and a rectangular transmission groove is provided at the other end of the slot inside the tower arm. A bearing is fixedly installed in the middle of the front and rear surfaces of the rectangular transmission groove.

[0008] Preferably, a bearing is fixedly installed at both the front and rear ends of the rectangular transmission groove on the outer surface of the transmission rod, and a bevel gear is fixedly installed at both the front and rear ends of the transmission rod near the rectangular transmission groove on the outer surface of the transmission rod.

[0009] Preferably, rectangular sliding grooves are formed on both the front and rear surfaces of the first groove, and second bearings are fixedly installed at the middle of both ends of the rectangular sliding grooves. Second bearings are fixedly installed at both ends of the rectangular sliding grooves on the outer surface of the threaded rod.

[0010] Preferably, a first bevel gear is fixedly mounted on the other end surface of the threaded rod, and the first bevel gear fixedly mounted on the other end surface of the threaded rod meshes with a second bevel gear, and a rectangular slider is threadedly mounted on the outer surface of the threaded rod.

[0011] Preferably, rectangular sliders are fixedly installed on the front and rear surfaces of the counterweight box near the upper end, connecting blocks are fixedly installed on the upper ends of the front and rear surfaces of the counterweight box, and slide rails are fixedly installed at the front and rear ends of the first groove on the upper surface of the tower arm, with connecting blocks slidably installed on the slide rails.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this utility model, the adjustable structure allows the servo motor inside the protective cover to be started when hoisting goods of different weights. This causes the connecting blocks fixedly installed on the upper part of the front and rear surfaces of the counterweight box to slide on the slide rail, thereby moving the counterweight box left and right in the first slot. This ensures the overall balance of the tower crane and meets the usage requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the boom of a tower crane with automatic balancing function according to this utility model.

[0015] Figure 2 This is a partial cross-sectional view of the boom of a tower crane with automatic balancing function according to the present invention.

[0016] Figure 3 This utility model relates to a tower crane boom with an automatic balancing function. Figure 2 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Tower; 2. Tower arm; 3. Guardrail; 4. Counterweight box; 401. Counterweight block; 5. Adjustment structure; 501. Protective cover; 502. Servo motor; 503. Rectangular slide rail; 504. Threaded rod; 505. Bearing No. 1; 506. Rectangular transmission groove; 507. Transmission rod; 508. Bevel gear No. 1; 509. Bearing No. 2; 510. Bevel gear No. 2; 511. Rectangular slider; 512. Connecting block; 513. Slide rail; 514. Groove No. 1. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figure 1-3 As shown, a tower crane boom with automatic balancing function includes a tower frame 1 and a counterweight box 4. A tower arm 2 is fixedly connected to the upper end of the tower frame 1. A guardrail 3 is fixedly installed on one end of the upper surface of the tower arm 2. A counterweight block 401 is placed inside the counterweight box 4. An adjustment structure 5 is provided at one end of the tower arm 2. The adjustment structure 5 includes a protective cover 501, a servo motor 502, a rectangular slide 503, a threaded rod 504, a first bearing 505, a rectangular transmission groove 506, a transmission rod 507, a first bevel gear 508, a second bearing 509, a second bevel gear 510, a rectangular slider 511, a connecting block 512, a slide rail 513, and a first groove 514.

[0020] A protective cover 501 is fixedly installed on the front surface of the tower arm 2. A servo motor 502 is installed inside the protective cover 501 on the front surface of the tower arm 2. A transmission rod 507 is fixedly connected to the rotating part of the servo motor 502. A first groove 514 is opened near one end of the tower arm 2. A rectangular transmission groove 506 is opened at the other end of the first groove 514 inside the tower arm 2. A first bearing 505 is fixedly installed in the middle of the front and rear surfaces of the rectangular transmission groove 506. A first bearing 505 is fixedly installed at the front and rear ends of the rectangular transmission groove 506 on the outer surface of the transmission rod 507. A second bevel gear 510 is fixedly installed at the front and rear ends of the rectangular transmission groove 506 on the outer surface of the transmission rod 507. A rectangular sliding groove 503 is opened on the front and rear surfaces of the first groove 514. A second bearing 509 is fixedly installed in the middle of the two ends of the rectangular sliding groove 503. A second bearing 509 is fixedly installed at both ends of the rectangular sliding groove 503 on the outer surface of the threaded rod 504. A first bevel gear 508 is fixedly installed on the other end of the threaded rod 504. The first bevel gear 508 meshes with the second bevel gear 510. A rectangular slider 511 is threaded onto the outer surface of the threaded rod 504. Rectangular sliders 511 are fixedly installed near the upper ends of the front and rear surfaces of the counterweight box 4. Connecting blocks 512 are fixedly installed at the upper ends of the front and rear surfaces of the counterweight box 4. Slide rails 513 are fixedly installed at the front and rear ends of the first groove 514 on the upper surface of the tower arm 2. Connecting blocks 512 are slidably installed on the slide rails 513. When hoisting goods of different weights, the servo motor 502 inside the protective cover 501 can be started to make the connecting blocks 512 fixedly installed at the upper ends of the front and rear surfaces of the counterweight box 4 slide on the slide rails 513, thereby moving the counterweight box 4 left and right in the first groove 514, thus ensuring the overall balance of the tower crane and meeting the usage requirements.

[0021] It should be noted that this utility model is a tower crane boom with automatic balancing function. When it is necessary to lift goods of different weights, the servo motor 502 inside the protective cover 501 is started first, so that the rotating part of the servo motor 502 drives the transmission rod 507 to rotate on the first bearing 505. This causes the outer surface of the transmission rod 507 to rotate near the second bevel gear 510 fixedly installed at the front and rear ends. Because the first bevel gear 508 fixedly installed on the other end of the threaded rod 504 meshes with the second bevel gear 510, the threaded rod 504 is driven to rotate on the second bearing 509. This causes the rectangular slider 511 threaded on the outer surface of the threaded rod 504 to slide in the rectangular slide groove 503. This causes the connecting block 512 fixedly installed on the upper part of the front and rear surfaces of the counterweight box 4 to slide on the slide rail 513, driving the counterweight box 4 to move left and right in the first groove 514. This ensures the overall balance of the tower crane and meets the usage requirements.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tower crane boom with automatic balancing function, characterized in that: The system includes a tower (1) and a counterweight box (4). The upper end of the tower (1) is fixedly connected to a tower arm (2). A guardrail (3) is fixedly installed on one end of the upper surface of the tower arm (2). A counterweight block (401) is placed inside the counterweight box (4). An adjustment structure (5) is provided at one end of the tower arm (2). The adjustment structure (5) includes a protective cover (501), a servo motor (502), a rectangular slide (503), a threaded rod (504), a first bearing (505), a rectangular transmission groove (506), a transmission rod (507), a first bevel gear (508), a second bearing (509), a second bevel gear (510), a rectangular slider (511), a connecting block (512), a slide rail (513), and a first groove (514).

2. The tower crane boom with automatic balancing function according to claim 1, characterized in that: A protective cover (501) is fixedly installed on the front surface of the tower arm (2). A servo motor (502) is installed inside the protective cover (501) on the front surface of the tower arm (2). A transmission rod (507) is fixedly connected to the rotating part of the servo motor (502).

3. The tower crane boom with automatic balancing function according to claim 2, characterized in that: The tower arm (2) has a slot (514) near one end. A rectangular transmission groove (506) is provided at the other end of the slot (514) inside the tower arm (2). A bearing (505) is fixedly installed in the middle of the front and rear surfaces of the rectangular transmission groove (506).

4. The tower crane boom with automatic balancing function according to claim 3, characterized in that: A bearing (505) is fixedly installed at both the front and rear ends of the rectangular transmission groove (506) on the outer surface of the transmission rod (507), and a bevel gear (510) is fixedly installed at both the front and rear ends of the transmission rod (507) near the rectangular transmission groove (506).

5. A tower crane boom with automatic balancing function according to claim 4, characterized in that: The first groove (514) has rectangular sliding grooves (503) on both the front and rear surfaces. The second bearing (509) is fixedly installed at the middle of both ends of the rectangular sliding groove (503). The second bearing (509) is fixedly installed at both ends of the rectangular sliding groove (503) on the outer surface of the threaded rod (504).

6. The tower crane boom with automatic balancing function according to claim 5, characterized in that: A first bevel gear (508) is fixedly installed on the other end surface of the threaded rod (504). The first bevel gear (508) fixedly installed on the other end surface of the threaded rod (504) meshes with a second bevel gear (510). A rectangular slider (511) is threadedly installed on the outer surface of the threaded rod (504).

7. The tower crane boom with automatic balancing function according to claim 6, characterized in that: Rectangular sliders (511) are fixedly installed on the front and rear surfaces of the counterweight box (4) near the upper end. Connecting blocks (512) are fixedly installed on the upper ends of the front and rear surfaces of the counterweight box (4). Slide rails (513) are fixedly installed at the front and rear ends of the first groove (514) on the upper surface of the tower arm (2). Connecting blocks (512) are slidably installed on the slide rails (513).

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