Counterweight mechanism of tower belt crane balance arm

Abstract

The utility model discloses a counterweight mechanism of a balance arm of a tower belt crane, which comprises a counterweight block arranged on the balance arm, the balance arm is of a triangular prism frame structure with a narrow upper part and a wide lower part, and a mounting notch matched with the cross section of the balance arm in shape is formed in the counterweight block; according to the utility model, the balance weight can be quickly increased and decreased, the balance arm can be stably mounted, and the mounting notch is matched with the triangular prism frame structure in shape, so that the falling phenomenon is not easy to occur, and the stability and the safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of tower belt conveyor technology, and in particular to a counterweight mechanism for the balance arm of a tower belt conveyor. Background Technology

[0002] The tower crane is a specialized piece of equipment for dam concrete pouring construction. It consists of a cylindrical tower crane and belt conveyors. The main structure of the cylindrical tower crane includes a tower column, support platform, slewing platform, working boom, counterweight boom, and A-frame self-lifting mechanism. The belt conveyors include one aluminum alloy material transfer belt conveyor and two articulated truss conveyors. The material transfer conveyor is installed on the platform formed by the climbing frame. One end of the material transfer conveyor is articulated to the feeding belt conveyor via a drop hopper, and the other end is articulated to the inner conveyor via a drop hopper.

[0003] Currently, there is limited publicly available literature on tower belt conveyors, a specialized piece of equipment for dam concrete pouring. Furthermore, the specific structure and installation of the counterweight mechanism on the counterweight boom are not disclosed. For example, in CN103015733B – a tower concrete placing boom – the counterweight blocks in the diagram are simply stacked on the outer end of the counterweight boom, and their specific connection structure is not disclosed. In actual operation, the counterweight blocks need to be added or removed according to the actual required counterweight, and they need to be stably installed on the counterweight boom without easily loosening. Therefore, for tower belt conveyors, a counterweight mechanism needs to be designed to meet the requirements of rapid addition and removal of counterweight and stable installation. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a counterweight mechanism for the balance arm of a tower conveyor, which can quickly increase or decrease the counterweight and stably install it on the balance arm.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a counterweight mechanism for a tower conveyor balance arm, including a counterweight block disposed on the balance arm, wherein the balance arm is a triangular prism frame structure that is narrow at the top and wide at the bottom, and the counterweight block has an installation slot inside that matches the cross-sectional shape of the balance arm.

[0006] Preferably, the balance arm includes a top beam at the top and two bottom beams at the bottom, the top beam and the bottom beams are parallel to each other, and the top beam and the bottom beams, as well as the two bottom beams, are fixedly connected by connecting rods.

[0007] Preferably, a positioning post is installed on the top of the balance arm, and a limiting groove that cooperates with the positioning post is opened on the top of the mounting slot.

[0008] Preferably, the areas where the mounting slot contacts the top and bottom of the balance arm are provided with pads.

[0009] Preferably, the counterweights on the balance arm are multiple, and each counterweight is fitted with a tie rod, the two ends of which are threaded into a lock nut.

[0010] Preferably, the tie rods are respectively inserted into the upper and lower parts of the multiple counterweights.

[0011] Preferably, side baffles are fixedly provided at the top and bottom outer ends of the balance arm.

[0012] Preferably, the tie rod passes through the area where the side baffle is located.

[0013] Preferably, the counterweight is further provided with a lifting lug at the top.

[0014] Preferably, the outer contour of the counterweight is rectangular, and the mounting slot inside is an isosceles triangle.

[0015] The advantages of this utility model are: it can quickly add or remove counterweights and can be stably installed on the balance arm. Since the mounting slot matches the shape of the triangular prism frame structure, it is not easy to fall off, and the stability and safety are greatly improved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the counterweight mechanism of a tower conveyor balance arm;

[0017] Figure 2 for Figure 1 A schematic diagram of the left-side view structure. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 and 2 As shown, a counterweight mechanism for a tower conveyor balance arm includes a counterweight block 2 disposed on the balance arm 1. The balance arm 1 is a triangular prism frame structure that is narrow at the top and wide at the bottom. The counterweight block 2 has an installation slot 3 inside that matches the cross-sectional shape of the balance arm 1.

[0020] Preferably, the balance arm 1 includes a top beam 1.1 at the top and two bottom beams 1.2 at the bottom. The top beam 1.1 and the bottom beams 1.2 are parallel to each other, and the top beam 1.1 and the bottom beams 1.2, as well as the two bottom beams 1.2, are fixedly connected by connecting rods 1.3. In this embodiment, the triangular prism frame structure of the balance arm 1, which is narrow at the top and wide at the bottom, makes the entire structure stable and not easily deformed, and also facilitates the quick installation of the counterweight 2. In actual installation, the counterweight 2 only needs to be hoisted and placed on the top of the balance arm 1. Since the mounting slot 3 matches the shape of the triangular prism frame structure, it is not easy for it to fall off, thus greatly improving stability and safety.

[0021] Preferably, a positioning post 4 is installed on the top of the balance arm 1, and a limiting groove 5 that cooperates with the positioning post 4 is opened on the top of the mounting slot 3. By setting the positioning post 4 and the limiting groove 5, the counterweight 2 is not easy to slide along the direction of the balance arm 1 after it is installed on the balance arm 1, thus playing a good limiting role.

[0022] Preferably, the mounting slot 3 is provided with pads in the areas where it contacts the top and bottom of the balance arm 1. Since the counterweight 2 is heavy, and the area where its mounting slot 3 contacts the top and bottom of the balance arm 1 is small, the pressure it experiences is significant. Furthermore, the counterweight 2 is generally made of reinforced concrete, making it prone to stress damage. To address this issue, pads (e.g., steel pads) are provided to prevent damage to the areas where the counterweight 2 contacts the balance arm 1.

[0023] Preferably, the counterweights 2 on the balance arm 1 are multiple, and each counterweight 2 is fitted with a tie rod 6. The two ends of the tie rod 6 are threaded into a locking nut 7. In this embodiment, the multiple counterweights 2 can be locked together by the threaded engagement of the tie rod 6 and the locking nut 7, making it less likely for them to sway along the balance arm 1.

[0024] Preferably, the tie rods 6 are respectively inserted into the upper and lower parts of the multiple counterweights 2.

[0025] Preferably, side baffles 8 are fixedly provided at the top and bottom outer ends of the balance arm 1. By providing side baffles 8, the outer counterweight 2 can be prevented from tipping over and slipping, thus providing a safety protection function.

[0026] Preferably, the pull rod 6 passes through the area where the side baffle 8 is located. In actual installation, the pull rod 6 passes through the counterweight 2 and the side baffle 8, and the locking nut 7 is located outside the side baffle 8 and is threadedly engaged with the pull rod 6. Finally, the pull rod 6 locks the multiple counterweights 2 together, and the pull rod 6 is also locked together with the balance arm 1 through the side baffle 8, so that the counterweights 2 and the balance arm 1 are combined to form a whole.

[0027] Preferably, the counterweight 2 is also provided with a lifting lug 9 on its top. The lifting lug 9 facilitates the hoisting process.

[0028] Preferably, the outer contour of the counterweight 2 is rectangular, and the mounting slot 3 inside it is an isosceles triangle.

[0029] The working principle of this embodiment is as follows:

[0030] When it is necessary to install counterweights 2 on the balance arm 1, first hoist the corresponding number of counterweights 2 onto the balance arm 1. In this process, it is only necessary to hoist and place the counterweights 2 on the top of the balance arm 1. Since the mounting slot 3 matches the shape of the triangular prism frame structure, it is not easy for them to fall off, greatly improving stability and safety. At the same time, during installation, the positioning post 4 and the limiting slot 5 are aligned one by one, so that after the counterweights 2 are installed on the balance arm 1, they are not easy to slide along the direction of the balance arm 1, which plays a good limiting role. Then, the tie rod 6 is passed through. The counterweight 2 and the side baffle 8 are connected by a locking nut 7 located outside the side baffle 8 and threadedly engaged with the tie rod 6. The tie rod 6 ultimately locks multiple counterweights 2 together, and the tie rod 6 is then locked together with the balance arm 1 through the side baffle 8, so that the counterweights 2 and the balance arm 1 are combined into a whole, thus completing the entire installation process. If weight reduction is required, simply loosen the locking nut 7, pull out the tie rod 6, then hoist the corresponding number of counterweights 2 out, and finally reinstall the tie rod 6 to lock the remaining counterweights 2 together.

[0031] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A counterweight mechanism for a tower conveyor balance arm, comprising a counterweight block (2) disposed on the balance arm (1), characterized in that: The balance arm (1) is a triangular prism frame structure that is narrow at the top and wide at the bottom, and the counterweight block (2) has an installation slot (3) inside that matches the cross-sectional shape of the balance arm (1).

2. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The balance arm (1) includes a top beam (1.1) at the top and two bottom beams (1.2) at the bottom. The top beam (1.1) and the bottom beams (1.2) are parallel to each other, and the top beam (1.1) and the bottom beams (1.2) and the two bottom beams (1.2) are fixedly connected by connecting rods (1.3).

3. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The top of the balance arm (1) is equipped with a positioning column (4), and the top of the mounting slot (3) is provided with a limiting groove (5) that cooperates with the positioning column (4).

4. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The mounting slot (3) is provided with pads in the areas where it contacts the top and bottom of the balance arm (1).

5. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The counterweight (2) on the balance arm (1) consists of multiple counterweights (2), and each counterweight (2) is fitted with a tie rod (6). The two ends of the tie rod (6) are threaded into the locking nut (7).

6. The counterweight mechanism for a tower conveyor balance arm according to claim 5, characterized in that: The tie rods (6) are respectively inserted into the upper and lower parts of the multiple counterweights (2).

7. The counterweight mechanism for a tower conveyor balance arm according to claim 5, characterized in that: The top and bottom outer ends of the balance arm (1) are both fixed with side baffles (8).

8. The counterweight mechanism for a tower conveyor balance arm according to claim 7, characterized in that: The tie rod (6) passes through the area where the side baffle (8) is located.

9. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The counterweight (2) is also provided with a lifting lug (9) at the top.

10. The counterweight mechanism for a tower conveyor balance arm according to claim 1, characterized in that: The outer contour of the counterweight (2) is rectangular, and the mounting slot (3) inside it is an isosceles triangle.

Images