Balance arm of tower type pouring equipment

Abstract

The utility model belongs to the field of tower belt crane equipment, and particularly provides a tower type pouring equipment balance arm which comprises a balance arm body arranged on one side of a tower crane rotary rack, a plurality of balancing weights are arranged at the end, away from the tower crane rotary rack, of the balance arm body, a supporting frame body is arranged on the tower crane rotary rack, and the supporting frame body is connected with the balance arm body through a balance arm pull rod. The balance arm pull rod comprises two sets of connecting pull rods which are arranged on the two sides of the balance arm respectively. According to the tower belt crane balance arm, the stability and strength of the balance arm are improved by optimizing the pull rod structure of the balance arm.

Description

TECHNICAL FIELD

[0001] The utility model relates to tower belt conveyor equipment field, especially a tower type pouring equipment balance arm. BACKGROUND

[0002] At present, in large water conservancy and hydropower engineering, the powerhouse of the dam type hydropower station and the flood discharge gate project are mostly located in the lower reaches of the river bed which is relatively wide and shallow, the dam section width is mostly 30-40 meters, the width along the water flow direction reaches 80-90 meters, and the thickness of the bottom mass concrete is generally about 20 meters. The dam type hydropower station generally adopts the staged diversion mode, and the river bed type power station powerhouse and the flood discharge gate dam are constructed in stages. In order to meet the requirements of flood control during the flood season, the foundation pit excavation and the bottom mass structure concrete pouring are completed in one dry season, and the concrete pouring is short in duration and high in strength. The construction period is quite tight, and the tower belt conveyor, the top belt conveyor, the mobile distributor and other equipment are generally used for hoisting and pouring.

[0003] For the tower belt conveyor, the distribution belt needs to be hoisted, the pouring position, angle and length of the distribution belt are changed, the distribution belt includes the inner distribution belt and the outer distribution belt, the total length of the inner distribution belt and the outer distribution belt reaches 100m, and the distribution belt is used to convey the concrete to the pouring position, so that higher requirements are put forward for the hoisting capacity and stability of the tower machine. The balance arm of the tower belt conveyor is a device for balancing the hoisting arm. For the tower belt conveyor with large concrete conveying capacity, the hoisting arm span reaches about 90m, the counterweight arm reaches about 40m for balancing the hoisting arm, and the mass of the counterweight is large, so that the structure of the counterweight arm needs to be optimized, the pull rod structure needs to be optimized, the pull rod needs to be prevented from being broken, and the stable operation of the tower belt conveyor is ensured. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a tower type pouring equipment balance arm, optimize the pull rod structure of the balance arm, and improve the stability and strength of the balance arm.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme of a tower type pouring equipment balance arm, including the balance arm arranged on one side of the tower machine rotary table frame, a plurality of counterweight blocks are arranged at the end of the balance arm away from the tower machine rotary table frame, a support frame body is arranged on the tower machine rotary table frame, the support frame body is connected with the balance arm through the balance arm pull rod, the balance arm pull rod includes two groups of connecting pull rods, and the connecting pull rods are arranged on the two sides of the balance arm respectively.

[0006] In the preferred scheme, at least one group of transverse connecting rods is arranged between the two groups of connecting pull rods.

[0007] In the preferred scheme, the connecting pull rods all include a plurality of unit pull rods, and the adjacent unit connecting rods are hingedly connected.

[0008] In the preferred scheme, the balance arm is a truss structure, comprising two groups of bottom support rods and a group of top support rods, the two groups of bottom support rods and the group of top support rods are arranged in a triangular shape, the two groups of bottom support rods are connected by a connecting cross bar, and the bottom support rods and the top support rods are connected by a plurality of "8" shaped pull rods.

[0009] In the preferred scheme, the top support rods and the connecting cross bar are connected by a vertical connecting frame.

[0010] In the preferred scheme, the lower end of the balance arm pull rod is hinged to the bottom support rod.

[0011] In the preferred scheme, a walkway is arranged along the length direction of the balance arm, and the walkway is arranged on the upper side of the connecting cross bar.

[0012] In the preferred scheme, the vertical connecting frame comprises two groups of abutting L-shaped rods, the horizontal rod end of the L-shaped rod is connected to the top support rod, and the vertical rod lower end of the L-shaped rod is connected to the connecting cross bar.

[0013] In the preferred scheme, the outer side of the vertical rod of the L-shaped rod is provided with a U-shaped frame for limiting the balance arm pull rod during installation.

[0014] In the preferred scheme, the top of the counterweight is provided with an eye.

[0015] The balance arm of the tower type pouring equipment has the following beneficial effects:

[0016] 1. In the concrete pouring operation of large-scale water conservancy and hydropower projects, a plurality of counterweights are arranged at the end of the balance arm away from the tower crane rotary rack, and the support frame on the tower crane rotary rack and the balance arm pull rod are matched, so that the large moment generated when the hoisting arm hoists concrete is effectively balanced. Through actual engineering use, the tower crane with the balance arm structure greatly reduces the concrete pouring deviation caused by shaking when hoisting full load concrete and the hoisting arm is in the maximum stretching state, improves the construction precision, and ensures the engineering quality.

[0017] 2. The balance arm pull rod is arranged on both sides of the balance arm by two groups of connecting pull rods, and a transverse connecting rod is arranged therebetween, and the connecting pull rod is composed of a plurality of hinged unit pull rods. This unique design allows the pull rod to adjust the angle flexibly through the hinge of the unit pull rod when bearing the tension, disperses the stress, and the transverse connecting rod further enhances the stability of the whole. Compared with the traditional pull rod, the pull rod structure effectively reduces the risk of pull rod fracture, prolongs the service life of the equipment, reduces the maintenance cost and downtime.

[0018] 3、The balance arm adopts a truss structure, and is composed of a bottom support rod, a top support rod, a connecting horizontal rod and an A-shaped pull rod to form a triangular layout, the stability of the triangle enables the balance arm to bear greater load. The setting of the vertical connecting frame further strengthens the overall rigidity of the balance arm, and the deformation amount of the balance arm is controlled within a very small range under different working conditions.

[0019] 4、The walkway arranged on the balance arm facilitates the daily inspection, equipment maintenance and fault elimination of the staff on the balance arm, improves the maintenance efficiency, and guarantees the normal operation of the equipment. Meanwhile, the lifting ring designed on the top of the counterweight block makes the installation, replacement and additional installation of the counterweight block more convenient, and when the counterweight needs to be adjusted, time and labor cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described in connection with the drawings and embodiments:

[0021] Figure 1 It is the installation structure schematic view of the utility model;

[0022] Figure 2 It is the overall structure schematic view of the utility model;

[0023] Figure 3 It is the structure schematic view of balance arm pull rod;

[0024] Figure 4 It is the structure schematic view of balance arm pull rod; Figure 2 It is the structure schematic view of balance arm pull rod;

[0025] Figure 5 It is the structure schematic view of vertical connecting frame;

[0026] In the drawing: tower crane rotary table 100, balance arm 200, bottom support rod 210, top support rod 220, connecting horizontal rod 230, "eight" shaped pull rod 240, vertical connecting frame 250, L-shaped rod 251, U-shaped frame 260, walkway 270, counterweight block 300, lifting ring 310, support frame body 400, balance arm pull rod 500, connecting pull rod 510, unit pull rod 511, horizontal connecting rod 520. DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] As Figures 1-3As shown, a counterweight arm for a tower-type concrete pouring equipment includes a counterweight arm 200 disposed on one side of a tower crane slewing platform 100. The counterweight arm 200 is a truss structure and is connected to the tower crane slewing platform 100 by bolts. A plurality of counterweight blocks 300 are provided at the end of the counterweight arm 200 away from the tower crane slewing platform 100. In this embodiment, the counterweight blocks 300 are precast reinforced concrete structures. Each counterweight block 300 has a through hole for a screw rod to pass through. After the counterweight blocks 300 are hung on the counterweight arm 200, a screw rod is inserted, and nuts are installed at both ends of the screw rod. The number of counterweight blocks 300 can be selected as needed.

[0029] The counterweight 300 is equipped with a lifting ring 310 at the top, which makes the installation, replacement and addition of the counterweight 300 more convenient and saves time and labor costs when the counterweight needs to be adjusted.

[0030] The tower crane slewing platform 100 is provided with a support frame 400. In this embodiment, the support frame 400 is an A-type frame.

[0031] The support frame 400 is connected to the balance arm 200 via a balance arm tie rod 500. The balance arm tie rod 500 includes two sets of connecting tie rods 510, which are respectively disposed on both sides of the balance arm 200, and the lower ends of the connecting tie rods 510 are hinged to both sides of the balance arm 200.

[0032] At least one set of transverse connecting rods 520 is provided between the two sets of connecting rods 510. In this embodiment, two sets of transverse connecting rods 520 are provided, respectively located at the upper end and the middle of the connecting rods 510.

[0033] By setting two sets of connecting rods 510, the support strength of the balance arm rod 500 can be improved. At the same time, the connecting rods 510 are connected to the bottom of the balance arm 200, and setting two sets of connection points can improve the connection strength with the balance arm 200.

[0034] By setting multiple sets of counterweights 300 at the end of the counterweight boom 200 away from the tower crane slewing platform 100, and in conjunction with the support frame 400 on the tower crane slewing platform 100 and the counterweight boom tie rod 500, the huge torque generated when the crane boom lifts concrete is effectively balanced.

[0035] Preferred, such as Figure 4 As shown, each of the connecting rods 510 includes multiple sets of unit rods 511, and adjacent unit rods 511 are hinged together.

[0036] The balance arm pull rod 500 adopts two groups of connecting pull rods 510, which are arranged on both sides of the balance arm 200 and are connected by a transverse connecting rod 520. The connecting pull rod 510 is composed of a plurality of hinged unit pull rods 511. This unique design enables the pull rod to flexibly adjust the angle through the hinge of the unit pull rod when bearing the pulling force, disperse the stress, and further enhance the stability of the whole. Compared with the traditional pull rod, the pull rod structure effectively reduces the risk of pull rod fracture, prolongs the service life of the equipment, reduces the maintenance cost and downtime.

[0037] Embodiment 2:

[0038] Different from embodiment 1, as shown in Figure 1 and Figure 5 , the balance arm 200 is a truss structure, including two groups of bottom support rods 210 and a group of top support rods 220. The two groups of bottom support rods 210 and the group of top support rods 220 are arranged in a triangular shape, and the two groups of bottom support rods 210 are connected by a connecting cross rod 230. The bottom support rod 210 and the top support rod 220 are connected by a plurality of "eight" shaped pull rods 240.

[0039] The bottom support rod 210, the top support rod 220, the connecting cross rod 230 and the "eight" shaped pull rod 240 form a triangular layout. The stability of the triangle enables the balance arm 200 to bear greater load.

[0040] Preferably, the top support rod 220 and the connecting cross rod 230 are connected by a vertical connecting frame 250. The vertical connecting frame 250 includes two groups of butt-jointed L-shaped rods 251. The cross rod end of the L-shaped rod 251 is connected with the top support rod 220, and the vertical rod lower end of the L-shaped rod 251 is connected with the connecting cross rod 230.

[0041] By setting the vertical connecting frame 250, the overall rigidity of the balance arm 200 is further enhanced, and the installation of the U-shaped frame 260 is facilitated.

[0042] The vertical rod outside of the L-shaped rod 251 is provided with a U-shaped frame 260 for limiting the balance arm pull rod 500 during installation.

[0043] Specifically, during the installation of the balance arm 200, the lower end of the connecting pull rod 510 is first connected with the balance arm 200. Since the connecting pull rod 510 includes a plurality of hinged unit pull rods 511, the connecting pull rod 510 is folded and clamped in the U-shaped frame 260, and then the balance arm 200 is hoisted.

[0044] The balance arm 200 is provided with a walkway 270 along the length direction thereof, and the walkway 270 is laid on the upper side of the connecting cross rod 230.

[0045] The walkway 270 arranged on the balance arm 200 facilitates workers to perform daily inspection, equipment maintenance and troubleshooting on the balance arm 200, improves the maintenance efficiency, and guarantees the normal operation of the equipment.

[0046] Embodiment 3:

[0047] In a large water conservancy project, the pouring amount of dam concrete is huge. In order to meet the pouring demand of high-strength concrete, a tower crane is selected for pouring. First, the lower ends of two groups of connecting pull rods 510 are respectively installed on both sides of the balance arm 200, the connecting pull rod 510 is folded, the balance arm pull rod 500 is clamped in the U-shaped frame 260, and the balance arm pull rod 500 is arranged closely to the balance arm 200; after the tower crane rotary table 100 is installed and debugged, the balance arm 200 is hoisted to the designated position by the crane, one end of the balance arm 200 is accurately connected with one side of the tower crane rotary table 100 and is fixed, the balance arm pull rod 500 is unfolded by the crane, and then the upper end thereof is hinged to the support frame 400. At the end of the balance arm 200 away from the tower crane rotary table 100, the counterweight block 300 is hoisted and assembled through the lifting ring 310, the number and position of the counterweight block are determined according to the design requirements, so as to ensure the balance effect.

[0048] During the concrete pouring process, the operator remotely controls the tower crane to operate through the operation room, and regularly arranges the workers to check each part of the balance arm through the walkway 270, and focuses on checking the connecting part of the balance arm pull rod 500, the hinge of the unit pull rod 511 and the welding points of each support rod. Problems are found and treated in time, such as tightening the loose connecting bolts and replacing the worn unit pull rod. During the intermittent period of the engineering construction, according to the operation condition of the equipment and the engineering progress requirement, the counterweight block 300 can be adjusted through the lifting ring 310, so that the tower crane is always in the best working state.

[0049] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The embodiments in the application and the features in the embodiments can be combined with each other as long as they do not conflict. The protection scope of the present application should be the technical solutions recited in the claims, including the equivalent replacement solutions of the technical features recited in the claims. That is, the equivalent replacement improvement within this range is also within the protection scope of the present application.

Claims

1. A tower crane balance arm, comprising a balance arm (200) arranged on one side of a tower crane slewing platform (100), characterized in that, The balance arm (200) is provided with a plurality of counterweights (300) at one end away from the tower crane rotary rack (100), the tower crane rotary rack (100) is provided with a support frame body (400), the support frame body (400) is connected with the balance arm (200) through a balance arm pull rod (500), the balance arm pull rod (500) comprises two groups of connecting pull rods (510), and the connecting pull rods (510) are arranged on the two sides of the balance arm (200) respectively.

2. A tower casting plant balance arm according to claim 1, characterised in that, At least one group of transverse connecting rods (520) is arranged between the two groups of connecting pull rods (510).

3. A tower casting plant balance arm according to claim 1, wherein, The connecting pull rod (510) comprises a plurality of unit pull rods (511), and adjacent unit connecting rods (511) are hingedly connected.

4. A tower casting apparatus balance arm according to claim 1, wherein, The balance arm (200) is of a truss structure, comprising two groups of bottom support rods (210) and a group of top support rods (220), the two groups of bottom support rods (210) and the group of top support rods (220) are arranged in a triangular shape, the two groups of bottom support rods (210) are connected through a connecting cross rod (230), and the bottom support rod (210) and the top support rod (220) are connected through a plurality of "eight" shaped pull rods (240).

5. A tower casting plant balance arm according to claim 4, characterised in that, The top support rod (220) and the connecting cross rod (230) are connected through a vertical connecting frame (250).

6. A tower casting plant balance arm according to claim 4, wherein, The lower end of the balance arm pull rod (500) is hingedly connected with the bottom support rod (210).

7. A tower casting plant balance arm according to claim 4, wherein, A walkway (270) is arranged along the length direction of the balance arm (200), and the walkway (270) is arranged on the upper side of the connecting cross rod (230).

8. A tower casting plant balance arm according to claim 5, wherein, The vertical connecting frame (250) comprises two groups of abutting L-shaped rods (251), the cross rod end of the L-shaped rod (251) is connected with the top support rod (220), and the vertical rod lower end of the L-shaped rod (251) is connected with the connecting cross rod (230).

9. A tower casting plant balance arm according to claim 8, characterised in that, The vertical rod outer side of the L-shaped rod (251) is provided with a U-shaped frame (260) for limiting the balance arm pull rod (500) during installation.

10. A tower casting apparatus balance arm according to claim 1, wherein, The counterweight (300) is provided with a lifting ring (310) at the top.

Images