Modular counterweight structure capable of adjusting gravity center

Abstract

The utility model provides a modular counterweight structure capable of adjusting the gravity center, and relates to the field of tower crane counterweights. The modular counterweight structure capable of adjusting the gravity center comprises two rails, mounting plates are fixed to the sides, away from each other, of the two rails, reinforcing beams are fixedly mounted at the bottoms of the rails, the left ends and the right ends of the two reinforcing beams are fixed through connecting beams, and two synchronous motors are fixedly mounted on the connecting beam on the right side; output shafts of the synchronous motors are fixedly provided with lead screws, the lead screws are located between the rails, the other ends of the lead screws are installed on the connecting beam on the left side and rotate relative to the connecting beam, supports are arranged above the rails, the bottoms of the supports are provided with a plurality of idler wheels, the idler wheels are clamped in the rails, and the two supports are fixed through a connecting plate. According to the modular balance weight structure capable of adjusting the gravity center, the position of the gravity center can be accurately adjusted by arranging the rail, the support, the rolling wheels, the synchronous motor and the balance weight clamp.

Description

TECHNICAL FIELD

[0001] The utility model relates to tower crane counterweight field, concretely is a module type counterweight structure that can adjust gravity center. BACKGROUND

[0002] The tower crane commonly used on the construction site of each place in China is called tower crane, and its main structure is: tower crane base, tower body, rotary body with gear ring at the lower end, balance arm with counterweight, hoisting arm for hoisting heavy objects during work and electrical control system. When the tower crane does not hoist heavy objects, the counterweight is fixed and does not move, and the balance arm still acts on the tower body with a moment, so that the tower body always has a bending force (harmful moment), causing the tower crane to still bear weight when not working, and it is an unbalanced state of one end bearing weight, which increases the fatigue of the tower body and the rear arm, especially under the action of reverse wind force and centrifugal force during rotation, which shortens the service life of the tower crane. SUMMARY

[0003] (I) technical problem solved

[0004] In view of the defects of the prior art, the utility model provides a module type counterweight structure capable of adjusting gravity center, which solves the problems in the background art.

[0005] (II) technical scheme

[0006] In order to achieve the above purpose, the utility model realizes the following technical scheme: a module type counterweight structure capable of adjusting gravity center, comprising two tracks, the side of the two tracks away from each other is fixed with a mounting plate, the bottom of the track is fixedly installed with a reinforcing beam, the left and right ends of the two reinforcing beams are fixed through a connecting beam, the right connecting beam is fixedly installed with two synchronous motors, the output shaft of the synchronous motor is fixedly installed with a lead screw, the lead screw is between the tracks, the other end of the lead screw is installed on the left connecting beam and rotates relative to it, the upper side of the track is provided with a support, the bottom of the support is installed with a plurality of rollers, the rollers are clamped in the track, the two supports are fixed through a connecting plate, the two lead screws penetrate the bottom end of the connecting plate and are drivingly connected relative to it, a plurality of counterweight cards are fixed between the two supports.

[0007] Preferably, one end of the mounting plate is perpendicular to the track, a plurality of positioning holes are formed in the mounting plate, and the reinforcing beam is arranged at the position where the mounting plate and the track are connected.

[0008] Preferably, a mounting frame is arranged between the two synchronous motors, the mounting frame is fixed with the two synchronous motors, and the other end of the mounting frame is fixed with the connecting beam.

[0009] Preferably, the support is of U-shaped structure, the rollers below the support are arranged and distributed at equal distances, the left and right sides of the rollers are provided with bosses, and the shape of the track is V-shaped and matched with the bosses.

[0010] Preferably, the number of connecting plates is two, and the bottom of each connecting plate is provided with two bushings matched with the lead screw.

[0011] Preferably, the bottom end of the counterweight card is below the support, and the counterweight card is in a U-shaped structure.

[0012] (Three) beneficial effects

[0013] The utility model provides a module type counterweight structure which can adjust the gravity center.

[0014] 1. The module type counterweight structure which can adjust the gravity center is provided with a track, a support, a roller, a synchronous motor and a counterweight card, the counterweight card can place a counterweight, the counterweight can increase or decrease to control the weight, then when controlling the rotation of the two synchronous motors, the support can be driven to move horizontally along the track, the lead screw can prevent the support from moving when the tower crane tilts, and the position of the gravity center can be accurately adjusted.

[0015] 2. The module type counterweight structure which can adjust the gravity center is provided with a mounting plate, a reinforcing beam and a connecting beam, the traditional counterweight is directly connected with the tower crane and is relatively stable, the moving gravity center needs more stable connection, the mounting plate can be fixed to the tower crane by using more bolts, the weight of the counterweight is concentrated on the two tracks, the reinforcing beam arranged at the bottom of the track can increase the compressive strength and avoid the bending of the track, and the reinforcing beam and the connecting beam are connected into a frame, so that the stability during connection is further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a connecting view of the counterweight card and the support of the utility model;

[0018] Figure 3 It is a partial structural view of the track of the utility model;

[0019] Figure 4 It is a connecting view of the roller and the track of the utility model.

[0020] 1. Track, 2. Mounting plate, 3. Reinforcing beam, 4. Connecting beam, 5. Synchronous motor, 6. Lead screw, 7. Support, 8. Roller, 9. Connecting plate, 10. Counterweight card, 11. Positioning hole. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0022] The utility model embodiment provides a kind of modular counterweight structure of gravity center adjustment:

[0023] As Figures 1-4 As shown in the figure, including two tracks 1, the both ends of track 1 are provided with baffle, the side of two tracks 1 away from each other is fixed with mounting plate 2, the bottom of track 1 is fixedly installed with reinforcing beam 3, reinforcing beam 3 can increase compressive strength, avoid the bending condition of track, the one end of mounting plate 2 is perpendicular to track 1, a plurality of positioning holes 11 are formed in mounting plate 2, positioning hole 11 can be fixedly connected together with tower crane itself using screw, reinforcing beam 3 is arranged at the position where mounting plate 2 and track 1 are connected, the left and right ends of two reinforcing beams 3 are fixed by connecting beam 4, reinforcing beam 3 and connecting beam 4 are connected into a frame, two synchronous motors 5 are fixedly installed on the right connecting beam 4, mounting rack is arranged between two synchronous motors 5, mounting rack is fixed with two synchronous motors 5 respectively, the other end of mounting rack is fixed with connecting beam 4, the output shaft of synchronous motor 5 is fixedly installed with lead screw 6, lead screw 6 is between track 1, the other end of lead screw 6 is installed on the left connecting beam 4 and rotates relative thereto, the top of track 1 is provided with support 7, a plurality of rollers 8 are installed on the bottom of support 7, reinforcing bearing is installed at the connecting position of roller 8 and support 7, which can bear larger load, roller 8 is clamped in track 1, support 7 is U-shaped structure, the rollers 8 below support 7 are arranged at equal distance, the left and right sides of roller 8 are provided with boss, the shape of track 1 is V-shaped and cooperates with it, two supports 7 are fixed by connecting plate 9, two lead screws 6 penetrate the bottom end of connecting plate 9 and are drivingly connected relative thereto, the number of connecting plate 9 is two, two lead sleeves are installed on the bottom of connecting plate 9, lead sleeve cooperates with lead screw 6 to drive, a plurality of counterweight cards 10 are fixed between two supports 7, the bottom end of counterweight card 10 is below support 7, counterweight card 10 is U-shaped structure.

[0024] In use, mounting plate 2 is fixed with tower crane using bolt, the reinforcing beam 3 arranged at the bottom of track 1 can increase compressive strength, avoid the bending of track 1, reinforcing beam 3 and connecting beam 4 are connected into a frame, which enhances the stability of connection, counterweight can be placed on counterweight card 10, counterweight can be increased or decreased to control weight, then control the rotation of two synchronous motors 5 can drive support 7 to move transversely along track, for adjusting gravity center.

[0025] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular counterweight structure with adjustable center of gravity, comprising two tracks (1), characterized in that: Two tracks (1) are fixed with mounting plates (2) on the side away from each other, the bottom of track (1) is fixed with reinforcing beams (3), the left and right ends of two reinforcing beams (3) are fixed through connecting beams (4), the right connecting beam (4) is fixedly installed with two synchronous motors (5), the output shaft of synchronous motor (5) is fixedly installed with lead screws (6), lead screw (6) is between track (1), the other end of lead screw (6) is rotatably connected with the left connecting beam (4), the top of track (1) is provided with supports (7), the bottom of support (7) is installed with a plurality of rollers (8), the roller (8) is clamped in the track (1), the two supports (7) are fixed through the connecting plate (9), the two lead screws (6) penetrate the bottom end of connecting plate (9), lead screw (6) is drivingly connected with connecting plate (9), a plurality of counterweight cards (10) are fixed between two supports (7).

2. The modular counterweight structure of claim 1, wherein: The mounting plate (2) is perpendicular to one end of the track (1), a plurality of positioning holes (11) are formed in the mounting plate (2), the reinforcing beam (3) is arranged at the position where the mounting plate (2) is connected with the track (1).

3. A modular counterweight structure according to claim 2, wherein: Mounting frames are arranged between the two synchronous motors (5), the mounting frames are fixed with the two synchronous motors (5), and the other end of the mounting frames is fixed with the connecting beam (4).

4. The modular counterweight structure of claim 3, wherein: The support (7) is a U-shaped structure, the rollers (8) below the support (7) are arranged at equal distances, the left and right sides of the roller (8) are provided with bosses, and the track (1) is V-shaped and matched with the bosses.

5. A modular counterweight structure according to claim 4, wherein: The number of connecting plates (9) is two, two silk sleeves are installed on the bottom of the connecting plate (9), and the silk sleeves are matched with the lead screws (6) for transmission.

6. A modular counterweight structure according to claim 5, wherein: The bottom end of the counterweight card (10) is below the support (7), and the counterweight card (10) is a U-shaped structure.

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