A screed

Abstract

The utility model belongs to the field of leveling machine structure technology, especially point to a leveling machine, including support, be provided with handle and power head on the support, be provided with mounting seat below the support, be provided with vibration device in the mounting seat, power head connects vibration device and provides vibration device driving force, is fixedly provided with the level ash ruler on the mounting seat, vibration device includes transmission shaft, be provided with eccentric counterweight on transmission shaft, eccentric counterweight rotates under the drive of power head to form the shock source, be provided with a plurality of shock absorber between the mounting seat and support, fastener passes in proper order mounting seat, shock absorber and support and will connect mounting seat and support. The utility model provides a leveling machine with shock absorption function.

Description

Technical Field

[0001] This utility model belongs to the technical field of leveling machine structure, and specifically refers to a leveling machine. Background Technology

[0002] Concrete is a crucial construction material in building engineering, forming the foundation for various types of buildings. The quality of concrete construction has a significant impact on the stability and aesthetics of building structures. Plate vibrators can improve the density of concrete during paving and provide initial leveling and compaction of the concrete surface. When a plate vibrator is in operation, the vibration force forces the concrete to vibrate, transforming the cement mortar's aggregate state from loose to dense, thus improving construction quality.

[0003] For example, Chinese patent CN202421047997.1 discloses a concrete plate vibrator for building construction, which includes a head handle. The head handle is installed on the upper end of a first connecting rod. A spring damper is connected to the lower end of the first connecting rod. The bottom of the spring damper is connected to a second connecting rod. The lower end of the second connecting rod is fixedly connected to a mounting vertical plate. A vibrating ruler main board is connected to the lower end of the mounting vertical plate. A vibrating motor is installed in the middle of the vibrating ruler main board. Folding rulers are installed on both sides of the vibrating ruler main board. The end of the folding ruler away from the vibrating motor is connected to both ends of the vibrating ruler main board through a rotatable hinge. By setting folding rulers on the vibrating ruler main board and adding spring dampers on the first and second connecting rods, the vibrating ruler can achieve the desired effect. This product can achieve a leveling effect for cement mortar, but it also has some drawbacks: The spring damper installed at the handle causes the first and second connecting rods to sway back and forth when the user holds the handle and drags it backward. This makes it difficult for the user to control the levelness of the mortar. While the spring damper reduces the user's vibration, it affects operation. Furthermore, the vibratory motor is directly mounted in the middle of the vibratory leveling board, which means it may be soaked in cement mortar, hindering its long-term use. Summary of the Invention

[0004] The purpose of this invention is to provide a leveling machine with shock absorption function.

[0005] The purpose of this utility model is achieved as follows:

[0006] A leveling machine includes a support frame, a handle and a power head on the support frame, a mounting base below the support frame, a vibration device inside the mounting base, the power head connecting to the vibration device and providing driving force to the vibration device, and a leveling ruler fixedly mounted on the mounting base; the vibration device includes a drive shaft, an eccentric counterweight on the drive shaft, the eccentric counterweight rotating under the drive of the power head to form a vibration source.

[0007] Several damping blocks are provided between the mounting base and the bracket. Fasteners pass through the mounting base, damping blocks and bracket in sequence to fix the mounting base and bracket. The mounting base and bracket are flexibly connected by several damping blocks.

[0008] Furthermore, the flat ruler is provided with a vertical section and a horizontal section, the vertical section is bent to form a gathering area; the vertical section is fixed to the side of the mounting base by fasteners.

[0009] Furthermore, the vertical segment has an arc-shaped bend, which forms the gathering area.

[0010] Furthermore, the power head has an output shaft, which can drive the output shaft to rotate; a coupling is provided between the output shaft and the transmission shaft, with one end of the coupling fixed to the output shaft and the other end fixed to the transmission shaft.

[0011] Furthermore, the coupling includes an upper connecting rod and a lower connecting rod, which are connected by a flexible element. The upper connecting rod and the lower connecting rod can rotate synchronously under the connection of the flexible element. The upper connecting rod is connected to the output shaft, and the lower connecting rod is connected to the transmission shaft.

[0012] Furthermore, the flexible component, the upper connecting rod, and the lower connecting rod are integrally formed, and the upper connecting rod and the lower connecting rod are metal components.

[0013] Furthermore, the upper connecting rod is provided with a flat or irregular surface, and the output shaft is provided with a hole for the upper connecting rod to extend into, the hole being provided with a flat or irregular surface that mates with the upper connecting rod, and the output shaft can drive the upper connecting rod to rotate; the lower connecting rod is provided with a flat or irregular surface, and the transmission shaft is provided with a hole for the lower connecting rod to extend into, the hole being provided with a flat or irregular surface that mates with the lower connecting rod, and the lower connecting rod can drive the output shaft to rotate.

[0014] Furthermore, the mounting base includes a mounting base body, which has a cavity. The opening of the cavity is provided with a cover plate, forming a sealed cavity under the action of the cover plate. The drive shaft passes through the cavity, and the eccentric counterweight is encapsulated in the cavity. The eccentric counterweight does not contact the side wall of the cavity during rotation.

[0015] Furthermore, the chamber is equipped with bearings at both the upper and lower ends of the drive shaft.

[0016] Furthermore, the mounting base body is provided with support arms on both sides, and the shock-absorbing block is provided between the support arms and the bracket.

[0017] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0018] 1. This utility model installs the power head above the bracket, keeping it away from the leveling ruler, thereby reducing the impact of cement mortar on the power head during use. Preferably, a fixing seat is also provided between the power head and the bracket, which further raises the power head away from the ground. The fixing seat can be a separate component or integrally formed on the bracket.

[0019] 2. Several shock-absorbing blocks are provided between the mounting base and the bracket of this utility model. By setting non-dry shock-absorbing blocks, the mounting base and the bracket can simultaneously have deformation capacity at multiple positions, resulting in a better shock absorption effect. Because it is multi-position shock absorption, the mounting base and the bracket will not deform excessively during the user's dragging process, and the setting of the shock-absorbing blocks will not affect the user's control of the leveling ruler.

[0020] 3. The coupling of this utility model includes an upper connecting rod and a lower connecting rod, which are connected by a flexible component. Since there is a damping block between the mounting base and the bracket, a coupling with deformation capability is provided in the internal transmission part to compensate for the deformation gap at this location. The coupling compensates for the deformation between the mounting base and the bracket, allowing the transmission part to effectively transmit power and ensuring its stability. Attached Figure Description

[0021] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0022] Figure 2 This is the second structural schematic diagram of this utility model;

[0023] Figure 3 yes Figure 2 A magnified structural diagram at point A;

[0024] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 5 yes Figure 4 A magnified structural diagram at point B;

[0026] Figure 6 This is one of the exploded structural diagrams of this utility model;

[0027] Figure 7 yes Figure 6 A magnified structural diagram at point C;

[0028] Figure 8 This is the second exploded structural diagram of this utility model.

[0029] In the diagram: 1-Bracket; 10-Damping block; 11-Fixed seat; 2-Handle; 3-Mounting seat; 30-Cavity; 31-Mounting seat body; 311-Support arm; 32-Cover plate; 4-Flat screed; 41-Vertical section; 411-Gathering area; 42-Horizontal section; 43-Pressure plate; 51-Drive shaft; 52-Eccentric counterweight; 53-Coupling; 531-Upper connecting rod; 532-Lower connecting rod; 533-Flexible component; 59-Bearing; 81-Screw; 82-Nut; 9-Power head; 91-Output shaft. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1-8 As shown:

[0031] A leveling machine includes a support frame 1, on which a handle 2 and a power head 9 are mounted. The power head 9 is an outsourced component and can be a common output device on the market, such as a gasoline engine or an electric motor, as long as the power head can provide power to a vibrating device. A mounting base 3 is located below the support frame 1, and the vibrating device is housed within the mounting base 3. The power head connects to the vibrating device and provides driving force to it. A leveling ruler 4 is fixedly mounted on the mounting base 3. The vibrating device includes a drive shaft 51, on which an eccentric counterweight 52 is mounted. The eccentric counterweight 52 rotates under the drive of the power head, thus forming a vibration source. Several damping blocks 10 are arranged between the mounting base 3 and the support frame 1. Fasteners pass sequentially through the mounting base 3, the damping blocks 10, and the support frame 1, connecting the mounting base and the support frame. By arranging multiple damping blocks 10 between the mounting base 3 and the support frame 1, multi-point damping support is provided, ensuring a good damping effect. The fasteners preferably use a bolt / screw 81 and nut 82 engagement method.

[0032] The leveling ruler 4 has a vertical section 41 and a horizontal section 42. The vertical section 41 is bent to form a converging area 411. The vertical section is fixed to the side of the mounting base by fasteners. To effectively fix the leveling ruler, a pressure plate 43 can also be provided. Bolts are passed through the pressure plate and the leveling ruler in sequence to fix the leveling ruler to the mounting base. The pressure plate is relatively long, and multiple bolts are fixed to the same pressure plate 43 at the same time. Preferably, the vertical section 41 has an arc-shaped bend, which forms the converging area 411. As the leveling machine moves forward, the converging area 411 helps to orderly advance the cement mortar that is above the ground, preventing the mortar from overflowing the vertical section.

[0033] The power head has an output shaft 91, which can drive the output shaft 91 to rotate. Preferably, a fixed seat 11 is fixed or integrally formed on the top of the bracket, and the output shaft passes through the fixed seat. A coupling 53 is provided between the output shaft 91 and the transmission shaft 51, with one end of the coupling 53 fixed to the output shaft 91 and the other end fixed to the transmission shaft 51. The coupling 53 has deformation capability. Preferably, the coupling includes an upper connecting rod 531 and a lower connecting rod 532, which are connected by a flexible member 533. The upper connecting rod 531 and the lower connecting rod 532 can rotate synchronously under the connection of the flexible member 533. The upper connecting rod 531 is connected to the output shaft 91, and the lower connecting rod 532 is connected to the transmission shaft 51. The flexible member 533, the upper connecting rod 531, and the lower connecting rod 532 are integrally formed, and the upper connecting rod 531 and the lower connecting rod 532 are metal parts. By using a coupling to compensate for the deformation between the mounting base and the bracket, the transmission part can effectively transmit power and ensure the stability of the transmission part.

[0034] The upper connecting rod has a flat or irregular surface, and the output shaft has a hole for the upper connecting rod to extend into, the hole having a flat or irregular surface that mates with the upper connecting rod. The output shaft can drive the upper connecting rod to rotate. The lower connecting rod has a flat or irregular surface, and the transmission shaft has a hole for the lower connecting rod to extend into, the hole having a flat or irregular surface that mates with the lower connecting rod. The lower connecting rod can drive the output shaft to rotate. Installation simply requires interlocking adjacent components.

[0035] Mounting base 3 includes mounting base body 31, mounting base body 31 is provided with a chamber 30, the opening of the chamber 30 is provided with a cover plate 32, and a sealed chamber 30 is formed under the action of the cover plate 32. The drive shaft 51 passes through the chamber 30, and the eccentric counterweight 52 is encapsulated in the chamber 30. The eccentric counterweight does not contact the side wall of the chamber during rotation.

[0036] The chamber is equipped with bearings 59 at both the upper and lower ends of the drive shaft.

[0037] The mounting base body 31 is provided with support arms 311 on both sides, and the shock-absorbing block 10 is provided between the support arms 311 and the bracket 1. By setting the support arms 311, the shock-absorbing block 10 is kept away from the cavity 30 of the mounting base and located on the periphery of the cavity, so that they are independent and will not interfere with each other. Moreover, the support arms also shield and protect the internal cavity.

[0038] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A leveling machine, comprising a support frame, a handle and a power head mounted on the support frame, a mounting base below the support frame, a vibration device disposed within the mounting base, the power head connected to the vibration device and providing driving force to the vibration device, and a leveling ruler fixedly mounted on the mounting base; characterized in that: The vibration device includes a drive shaft with an eccentric counterweight on it. The eccentric counterweight rotates under the drive of the power head, thereby forming a vibration source. Several damping blocks are provided between the mounting base and the bracket. Fasteners pass through the mounting base, damping blocks and bracket in sequence to fix the mounting base and bracket. The mounting base and bracket are flexibly connected by several damping blocks.

2. The leveling machine according to claim 1, characterized in that: The leveling ruler has a vertical section and a horizontal section. The vertical section is bent to form a convergence area. The vertical section is fixed to the side of the mounting base by fasteners.

3. The leveling machine according to claim 2, characterized in that: The vertical segment has an arc-shaped bend, which forms the gathering area.

4. The leveling machine according to claim 1, 2, or 3, characterized in that: The power head has an output shaft, which can drive the output shaft to rotate; a coupling is provided between the output shaft and the transmission shaft, with one end of the coupling fixed to the output shaft and the other end fixed to the transmission shaft.

5. The leveling machine according to claim 4, characterized in that: The coupling includes an upper connecting rod and a lower connecting rod, which are connected by a flexible element. The upper and lower connecting rods can rotate synchronously under the connection of the flexible element. The upper connecting rod is connected to the output shaft, and the lower connecting rod is connected to the transmission shaft.

6. The leveling machine according to claim 5, characterized in that: The flexible component, the upper connecting rod, and the lower connecting rod are integrally formed, and the upper and lower connecting rods are made of metal.

7. The leveling machine according to claim 5 or 6, characterized in that: The upper connecting rod has a flat or irregular surface, and the output shaft has a hole for the upper connecting rod to extend into. The hole has a flat or irregular surface that mates with the upper connecting rod, and the output shaft can drive the upper connecting rod to rotate. The lower connecting rod has a flat or irregular surface, and the transmission shaft has a hole for the lower connecting rod to extend into. The hole has a flat or irregular surface that mates with the lower connecting rod, and the lower connecting rod can drive the output shaft to rotate.

8. The leveling machine according to claim 1, 2, 3, 5, or 6, characterized in that: The mounting base includes a mounting base body, which has a chamber. The opening of the chamber is covered by a cover plate, forming a sealed chamber. The drive shaft passes through the chamber, and the eccentric counterweight is encapsulated in the chamber. The eccentric counterweight does not contact the side wall of the chamber during rotation.

9. The leveling machine according to claim 8, characterized in that: The chamber is equipped with bearings at both the upper and lower ends of the drive shaft.

10. The leveling machine according to claim 8, characterized in that: The mounting base has support arms on both sides, and the shock-absorbing block is provided between the support arms and the bracket.

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