Balance arm of concrete spreader

Abstract

The utility model discloses a balance arm of a concrete spreader, which comprises a balance arm main plate, mounting plates are arranged on the left side and the right side of the lower end face of the balance arm main plate, and a reinforcing lead screw is arranged between the mounting plates on the left side and the right side; sliding plates are arranged on the front side and the rear side of the reinforcing lead screw, the upper ends of the sliding plates are fixedly connected with the balance arm main plate, bearing plates are arranged on the lower sides of the sliding plates in a sliding mode, and connecting blocks are arranged on the upper sides of the bearing plates; a threaded hole is transversely formed in the connecting block in a penetrating mode, the weight box is used for containing a balancing weight, and the weight box can transversely move along the reinforcing lead screw under driving of the reinforcing lead screw and the driving motor. Therefore, under the condition that the number of the balancing weights in the weight box is not adjusted, the torque generated by the weight box can be adjusted by adjusting the position of the weight box on the reinforcing lead screw, the stability of the bearing plate is improved through the arranged sliding rails and sliding blocks, and the situation that the balancing weights are frequently hoisted and unloaded to adjust the torque generated by the weight box is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of balance arms, and specifically relates to a balance arm of a concrete placing boom. Background Art

[0002] In the related art, a concrete placing boom comprises a tower body and a balancing arm and a placing arm located on both sides of the tower body, wherein a counterweight block is generally fixed at the end of the balancing arm to balance the moment generated on the side of the placing arm to prevent the concrete placing boom from tipping over.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] However, during the operation, it is necessary to adjust the posture of the fabric arm according to the on-site conditions. The center of gravity of the fabric arm side changes with the posture of the fabric arm. Therefore, the torque of the fabric arm is constantly changing, and the counterweight of the balance arm needs to be adjusted to balance the torque generated on the fabric arm side. Currently, the counterweight of the balance arm is adjusted by adjusting the number of counterweight blocks at the end of the balance arm. Frequent lifting and unloading of the counterweight blocks on the balance arm is extremely inconvenient during use. Utility Model Content

[0005] The utility model aims to provide a balancing arm of a concrete placing boom to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a balancing arm of a concrete placing boom, comprising a balancing arm mainboard, mounting plates are provided on the left and right sides of the lower end surface of the balancing arm mainboard, and a reinforcing screw is provided between the mounting plates on the left and right sides; slide plates are provided on the front and rear sides of the reinforcing screw, the upper end of the slide plate is fixedly connected to the balancing arm mainboard, a bearing plate is slidably provided on the lower side of the slide plate, and a connecting block is provided on the upper side of the bearing plate; a threaded hole is transversely penetrated on the connecting block, the reinforcing screw is penetrated in the hole of the threaded hole, and the reinforcing screw is driven by a driving motor, the driving motor is fixedly provided on the side wall of the mounting plate, and a counterweight box is provided at the lower end of the connecting block.

[0007] Preferably, the balance arm main board is connected to the cloth arm, protective plates are provided on the front and rear sides of the mounting plate, slide rails are provided on the inner side walls of the protective plates, sliders are provided at the front and rear ends of the supporting plate, and the sliders are slidably arranged on the tracks of the slide rails.

[0008] Preferably, both front and rear ends of the carrier plate are provided with mounting grooves, and the slider is fixed in the notch of the mounting groove.

[0009] Preferably, the connection block and the bearing plate are an integrated structure or are welded together.

[0010] Preferably, the counterweight box is provided with a plurality of transverse partitions arranged at intervals along the longitudinal direction, a counterweight placement cavity is formed between any adjacent transverse partitions, and the counterweight box is provided with a shock-absorbing rubber pad for reducing the vibration of the counterweight.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the counterweight box of the utility model is used to place the counterweight blocks, and the counterweight box can move laterally along the reinforcing lead screw under the drive of the reinforcing lead screw and the driving motor. Therefore, without adjusting the number of counterweight blocks in the counterweight box, the torque generated by the counterweight box can be adjusted by adjusting the position of the counterweight box on the reinforcing lead screw. The provided slide rails and sliders increase the stability of the bearing plate, and there is no need to frequently lift and remove the counterweight blocks to adjust the torque generated by the counterweight box. It is convenient to use and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a main schematic diagram of the utility model;

[0013] Figure 2 It is a side view schematic diagram of the load-bearing plate of the utility model;

[0014] Figure 3 It is a bottom view schematic diagram of the utility model.

[0015] In the figure: 1. Balance arm main board; 2. Mounting plate; 3. Reinforced screw; 4. Slide plate; 5. Load-bearing plate; 6. Connecting block; 7. Threaded hole; 8. Drive motor; 9. Counterweight box; 10. Protective plate; 11. Slide rail; 12. Slide plate; 13. Mounting groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a balancing arm of a concrete placing boom, comprising a balancing arm main board 1, mounting plates 2 are arranged on the left and right sides of the lower end surface of the balancing arm main board 1, and a reinforcing screw 3 is arranged between the mounting plates 2 on the left and right sides; slide plates 4 are arranged on the front and rear sides of the reinforcing screw 3, the upper end of the slide plate 4 is fixedly connected to the balancing arm main board 1, and a bearing plate 5 is slidably arranged on the lower side of the slide plate 4, and a small slide groove corresponding to the slide plate 4 is arranged on the bearing plate 5, and the bearing plate 5 is slidably connected with the slide plate 4 through the small slide groove, and a connecting block 6 is arranged on the upper side of the bearing plate 5; a threaded hole 7 is horizontally penetrated on the connecting block 6, and the reinforcing screw 3 penetrates the hole of the threaded hole 7, and the reinforcing screw 3 is driven by a driving motor 8, and the driving motor 8 drives the reinforcing screw 3 to rotate forward or reversely, so that the bearing plate 5 is threadedly connected with the reinforcing screw 3 through the connecting block 6, so that the bearing plate 5 can move horizontally along the reinforcing screw 3, and the driving motor 8 is fixed on the side wall of the mounting plate 2, and a counterweight box 9 is arranged at the lower end of the connecting block 6.

[0018] Specifically, the balance arm main board 1 is connected to the cloth arm, the front and rear sides of the mounting plate 2 are provided with protective plates 10, the inner wall of the protective plate 10 is provided with a slide rail 11, and the front and rear ends of the supporting plate 5 are provided with a slider 12, and the slider 12 is slidably arranged on the track of the slide rail 11.

[0019] Specifically, mounting grooves 13 are provided at both the front and rear ends of the supporting plate 5, the slider 12 is fixed in the groove of the mounting groove 11, positioning holes are provided at the upper and lower ends of the mounting groove 13, and corresponding threaded holes are provided at the upper and lower sides of the slider 12, and the supporting plate 5 and the slider 12 are fixedly connected by fixing bolts.

[0020] Specifically, the connection block 6 and the bearing plate 5 are formed into an integrated structure or welded to ensure that the connection block 6 and the bearing plate 5 have sufficient strength and stability.

[0021] Specifically, the counterweight box 9 is provided with a plurality of transverse partitions arranged at intervals along the longitudinal direction, and a counterweight placement cavity is formed between any adjacent transverse partitions. The counterweight box 9 is provided with a shock-absorbing rubber pad for reducing the vibration of the counterweight.

[0022] Working principle: When the utility model is working, the counterweight box 9 is used to place the counterweight block. Under the drive of the reinforcing screw 3 and the driving motor 8, the driving motor 8 drives the reinforcing screw 3 to rotate forward or reverse, so that the bearing plate 5 is threadedly connected with the reinforcing screw 3 through the connecting block 6, so that the bearing plate 5 can move laterally along the reinforcing screw 3. Therefore, without adjusting the number of counterweight blocks in the counterweight box 9, the torque generated by the counterweight box 9 can be adjusted by adjusting the position of the counterweight box 9 on the reinforcing screw 3. The provided slide rails 11 and sliders 12 increase the stability of the bearing plate 5, and there is no need to frequently lift and remove the counterweight blocks to adjust the torque generated by the counterweight box 9.

[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A balancing arm of a concrete placing boom, characterized in that: It comprises a balancing arm mainboard (1), wherein mounting plates (2) are provided on both left and right sides of the lower end surface of the balancing arm mainboard (1), and a reinforcing lead screw (3) is provided between the mounting plates (2) on the left and right sides; The reinforcing screw (3) is provided with a slide plate (4) on both the front and rear sides, the upper end of the slide plate (4) is fixedly connected to the balancing arm main board (1), a bearing plate (5) is slidably provided on the lower side of the slide plate (4), and a connecting block (6) is provided on the upper side of the bearing plate (5); The connecting block (6) is provided with a threaded hole (7) extending transversely therethrough, the reinforcing screw (3) is inserted into the threaded hole (7), and the reinforcing screw (3) is driven by a driving motor (8), the driving motor (8) is fixedly mounted on the side wall of the mounting plate (2), and a counterweight box (9) is provided at the lower end of the connecting block (6).

2. The balancing arm of a concrete placing boom according to claim 1, characterized in that: The balancing arm main board (1) is connected to the cloth arm, the front and rear sides of the mounting plate (2) are both provided with protective plates (10), the inner side wall of the protective plate (10) is provided with a slide rail (11), the front and rear ends of the supporting plate (5) are both provided with a slider (12), and the slider (12) is slidably arranged on the track of the slider (11).

3. The balancing arm of a concrete placing boom according to claim 2, characterized in that: The front and rear ends of the bearing plate (5) are both provided with mounting grooves (13), and the sliding block (12) is fixedly arranged in the notch of the mounting groove (11).

4. The balancing arm of a concrete placing boom according to claim 2, characterized in that: The connection block (6) and the bearing plate (5) are an integrated structure or are welded together.

5. The balancing arm of a concrete placing boom according to claim 1, characterized in that: The counterweight box (9) is provided with a plurality of transverse partitions arranged at intervals in the longitudinal direction, and a counterweight placement cavity is formed between any adjacent transverse partitions. The counterweight box (9) is provided with a shock-absorbing rubber pad for reducing vibration of the counterweight.

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