Hand-held vibrating spade assembly

Abstract

The utility model relates to concrete construction equipment technical field discloses handheld vibration shovel assembly, including rotation drive arrangement, the rotation drive arrangement is connected with the extension tube, the extension tube is installed with vibration shovel away from one end of rotation drive arrangement, be equipped with at least one exhaust hole on vibration shovel, the inside of extension tube is connected with the rotation shaft that is driven rotation by rotation drive arrangement through rotation subassembly, install eccentric block that distributes along rotation shaft axial direction and is built -in in the extension tube in rotation shaft. In the utility model, through adopt the extension tube with certain length and flat vibration shovel as the work end, can easily go in deep narrow or longitudinal depth space that is difficult to reach and carry out the work, greatly widen the scope of application, in addition, eccentric block adopts the design of splicing sub -block, allows user to adjust vibration intensity through increasing or reducing the number of sub -block or adjusting its installation angle.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction equipment technology, and in particular to a handheld vibratory shovel assembly. Background Technology

[0002] Concrete vibrators are an indispensable key piece of equipment in modern construction. Their main function is to reduce the friction and cohesion between concrete aggregates through high-frequency vibration, thereby promoting the liquefaction and flow of concrete, eliminating air bubbles and excess water trapped inside, and achieving a uniform and dense compaction effect to ensure the strength and durability of concrete components.

[0003] Currently, the most common type of concrete vibrator on the market is the handheld insertion vibrator, whose working end is usually a cylindrical vibrating rod. During operation, the operator holds the drive unit and inserts the vibrating rod into the newly poured concrete for compaction. This design is effective and widely used when compacting large-volume, open concrete components (such as floor slabs, beams, and columns).

[0004] However, in existing technologies, some traditional cylindrical vibrators, due to their circular cross-section and certain diameter, cannot enter narrow and flat gaps for operation. This can easily cause quality defects such as voids and honeycombing in the concrete in these areas, creating structural safety hazards. Furthermore, the vibration intensity requirements vary depending on the construction scenario, and existing vibrators cannot flexibly adjust the vibration intensity according to the actual working conditions, resulting in poor versatility. Therefore, a handheld vibratory shovel assembly is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a handheld vibratory shovel assembly, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A handheld vibratory shovel assembly includes a rotary drive device, an extension tube connected to the rotary drive device, a vibratory shovel mounted on the end of the extension tube away from the rotary drive device, at least one exhaust hole on the vibratory shovel, and a rotary shaft driven by the rotary drive device connected inside the extension tube via a rotary assembly, and an eccentric block mounted on the rotary shaft and distributed along the axial direction of the rotary shaft and built into the extension tube. As a further description of the above technical solution: A mounting base is provided at the end of the extension tube away from the rotary drive device, and a vibratory shovel mounting position is provided on the mounting base. The vibratory shovel is connected to the mounting base by a detachable component. As a further description of the above technical solution: The extension tube is connected to a connecting sleeve at one end near the rotary drive device, and the connecting sleeve is fixedly connected to the rotary drive device by a locking assembly; As a further description of the above technical solution: The rotary drive device includes an extension cylinder, at least a portion of the connecting sleeve is inserted into the extension cylinder, and the locking assembly includes a locking ring sleeved on the outer periphery of the extension cylinder and bolt pairs passing through the two ends of the locking ring; As a further description of the above technical solution: The rotating assembly includes bearing assemblies sleeved at both ends of the rotating shaft and fixed to the inner wall of the extension tube. An axial limiting tube is provided between the two sets of bearing assemblies, abutting against the outer ring of the two sets of bearing assemblies. The lower end of the connecting sleeve at least partially abuts against the outer ring of one set of bearing assemblies. At least part of the mounting seat extends into the extension tube and abuts against the outer ring of the other set of bearing assemblies. As a further description of the above technical solution: The two ends of the eccentric block each have abutting shoulders that abut against the inner ring of the bearing assembly; As a further description of the above technical solution: The eccentric block includes at least two splicing sub-blocks, with adjacent splicing sub-blocks connected by positioning pins, and each splicing sub-block is fixed to the rotating shaft by fasteners. As a further description of the above technical solution: The end of the rotating shaft away from the rotating drive device is also provided with a retaining spring, which abuts against the inner ring of another set of bearings.

[0007] As a further description of the above technical solution: The output shaft of the rotary drive device is threadedly connected to the rotary shaft, and the output shaft has an abutting end face that abuts against the inner ring of one of the sets of bearing assemblies; As a further description of the above technical solution: The rotary drive device is a series-wound motor; the vibratory shovel mounting position is L-shaped, and the vibratory shovel mounting position has a mounting plane arranged along the axis of the extension tube.

[0008] This utility model has the following beneficial effects: 1. In this utility model, by using an extension tube of a certain length and a flat vibratory shovel as the working end, it can easily penetrate into narrow or deep spaces that are difficult for traditional vibrators to reach, such as areas with dense reinforcement and corners of formwork, thus greatly expanding its applicable range. Secondly, the vent provides a direct escape channel for air bubbles and moisture inside the concrete, improving the compaction and homogeneity of the vibration. In addition, the eccentric block adopts a spliced ​​sub-block design, allowing users to flexibly adjust the vibration intensity by increasing or decreasing the number of sub-blocks or adjusting their installation angle to adapt to the vibration requirements of different grades of concrete, making the operation of the whole machine more flexible and targeted.

[0009] 2. In this utility model, the connecting sleeve, axial limiting tube and mounting seat form a rigid lock on the outer ring of the bearing assembly, which prevents the bearing from moving in the housing; for the internal rotating parts, the output shaft abutting the top surface, the eccentric block abutting the top shoulder and the end retaining spring realize multi-point locking of the inner ring of the bearing assembly and the rotating shaft, which completely prevents axial movement, ensures the stable and low noise operation of the equipment for a long time, and, together with the detachable vibratory shovel, makes the whole machine extremely durable and easy to maintain, which significantly reduces the failure rate and long-term use cost. Attached Figure Description

[0010] Figure 1 This is a perspective view of the handheld vibrating shovel assembly proposed in this utility model; Figure 2 This is a cross-sectional view of the handheld vibrating shovel assembly proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the vibrating shovel in the handheld vibrating shovel assembly proposed in this utility model; Figure 5 This is a side view of the handheld vibrating shovel assembly proposed in this utility model; Figure 6 This is a front view of the handheld vibratory shovel assembly proposed in this utility model.

[0011] Legend: 1. Rotary drive unit; 2. Extension tube; 3. Vibratory shovel; 4. Rotary shaft; 5. Eccentric block; 6. Mounting base; 7. Connecting sleeve; 8. Extension tube; 9. Locking ring; 10. Bolt pair; 11. Bearing assembly; 12. Axial limiting tube; 13. Abutment shoulder; 14. Locating pin; 15. Snap ring; 16. Abutment top surface; 17. Mounting plane; 18. Vent hole; 19. Output shaft. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a handheld vibratory shovel assembly, including a rotary drive device 1, which is a series-wound motor. The specific structure of the series-wound motor is described in the applicant's prior patent number CN215254679U. An extension tube 2 is connected to the rotary drive device 1, and a vibratory shovel 3 is installed at the end of the extension tube 2 away from the rotary drive device 1. At least one vent hole 18 is provided on the vibratory shovel 3. The function of the vent hole 18 is to provide a smooth escape channel for air bubbles and excess water that rise to the surface of the concrete due to vibration when the vibratory shovel 3 is inserted into the concrete for vibration, thereby significantly improving the venting efficiency and helping to form a denser and more homogeneous concrete structure. The interior of the extension tube 2 is connected to a rotating shaft 4 driven by the rotary drive device 1 through a rotating component. An eccentric block 5 is installed on the rotating shaft 4, which is axially distributed along the rotating shaft 4 and built into the extension tube 2.

[0014] Reference Figure 1 , Figure 4 and Figure 5 A mounting base 6 is provided at the end of the extension tube 2 away from the rotary drive device 1. A vibratory shovel mounting position is provided on the mounting base 6. The vibratory shovel 3 is connected to the mounting base 6 by a detachable component, which can be a bolt. The vibratory shovel 3 is designed to be detachable, which facilitates the replacement and maintenance of this vulnerable part and reduces the long-term operating cost for users. The vibratory shovel mounting position is L-shaped and has a mounting plane 17 arranged along the axis of the extension tube 2. The L-shaped mounting position design can provide positioning references in both axial and radial directions at the same time, effectively preventing the vibratory shovel 3 from shifting or rotating under severe vibration, and ensuring the stability and reliability of the connection.

[0015] Reference Figure 2 , Figure 3 and Figure 4The extension tube 2 is connected to a connecting sleeve 7 at one end near the rotary drive device 1. The connecting sleeve 7 is fixedly connected to the rotary drive device 1 by a locking assembly. The rotary drive device 1 includes an extension tube 8. At least a portion of the connecting sleeve 7 is inserted into the extension tube 8. The locking assembly includes a locking ring 9 sleeved on the outer periphery of the extension tube 8 and bolt pairs 10 passing through the two ends of the locking ring 9. The connection method formed by the connecting sleeve 7 and the locking ring 9 can provide a strong and vibration-resistant clamping force while maintaining the detachability of the structure, making the assembly, maintenance or replacement of the drive motor part simple and quick.

[0016] The rotating assembly includes bearing assemblies 11 fitted at both ends of the rotating shaft 4 and fixed to the inner wall of the extension tube 2. An axial limiting tube 12 is provided between the two bearing assemblies 11, abutting against the outer ring of the two bearing assemblies 11. The lower end of the connecting sleeve 7 at least partially abuts against the outer ring of one of the bearing assemblies 11. At least part of the mounting seat 6 extends into the extension tube 2 and abuts against the outer ring of the other bearing assembly 11. Through the combined action of the connecting sleeve 7, the axial limiting tube 12 and the mounting seat 6, a rigid fixing structure for the outer ring of the bearing assembly 11 is formed, which prevents any axial movement of the entire bearing assembly 11 within the extension tube 2 and provides a solid foundation for the stable operation of the device. A retaining ring 15 is provided at the end of the rotating shaft 4 away from the rotating drive device 1. The retaining ring 15 abuts against the inner ring of another set of bearing groups 11. The output shaft 19 of the rotating drive device 1 is threadedly connected to the rotating shaft 4. The output shaft 19 has an abutting end face 16 that abuts against the inner ring of one of the bearing groups 11. The two ends of the eccentric block 5 have abutting shoulders 13 that abut against the inner ring of the bearing group 11. The eccentric block 5 includes at least two splicing sub-blocks. Adjacent splicing sub-blocks are connected by positioning pins 14. Each splicing sub-block is fixed to the rotating shaft 4 by fasteners. The abutting end face 16 of the output shaft 19, the abutting shoulders 13 of the eccentric block 5 and the retaining ring 15 at the end form a multi-point axial lock for the rotating shaft 4 and the eccentric block 5, which effectively prevents the rotating parts from moving inside the bearing and ensures the stability of the transmission gap. The abutting shoulders 13 are directly set on the eccentric block 5, so that the eccentric block 5 itself has the dual functions of counterweight and axial limiting sleeve.

[0017] Working principle: When the rotary drive device 1 is started, its power is transmitted to the far end through the internal rotary shaft 4. The overall structure is designed with an extension tube 2 of considerable length as the body, which not only greatly increases the working distance of the assembly, but also enables it to work in narrow or deep spaces that are difficult for traditional vibrators to reach, significantly improving the applicability of construction. Inside the extension tube 2, a bearing assembly 11 is precisely installed. The outer ring of the bearing assembly 11 is firmly axially fixed to the inner wall of the extension tube 2 through the connecting sleeve 7, the mounting seat 6 and the axial limiting tube 12 in between, providing stable and reliable radial support for the rotary shaft 4, effectively avoiding shaking and abnormal noise during vibration, and ensuring the smooth operation and durability of the equipment. When the rotating shaft 4 rotates at high speed, the eccentric block 5 generates a strong periodic centrifugal force due to its center of mass deviating from the center of rotation. This centrifugal force causes the entire working end to vibrate at high frequency, thereby realizing the function of vibrating concrete. The integrally formed abutment shoulders 13 at both ends of the eccentric block 5 directly abut against the inner ring of the bearing assembly 11, effectively preventing the rotating shaft 4 and the eccentric block 5 from axial movement during severe vibration. Furthermore, the eccentric block 5 can be designed to consist of at least two spliced ​​sub-blocks. The adjacent sub-blocks are precisely aligned by positioning pins 14, and then they are combined and firmly fixed to the rotating shaft 4 by fasteners. This split structure allows for convenient adjustment of vibration intensity by increasing or decreasing the number of sub-blocks or adjusting their relative installation angle, thereby enhancing the stability of eccentric motion.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld vibratory shovel assembly, comprising a rotary drive device (1), characterized in that: An extension tube (2) is connected to the rotary drive device (1). A vibratory shovel (3) is installed at one end of the extension tube (2) away from the rotary drive device (1). At least one exhaust hole (18) is provided on the vibratory shovel (3). The interior of the extension tube (2) is connected to a rotating shaft (4) driven by the rotary drive device (1) through a rotating assembly. An eccentric block (5) is installed on the rotating shaft (4) and distributed along the axial direction of the rotating shaft (4) and built into the extension tube (2).

2. The hand-held vibratory spade assembly of claim 1, wherein: A mounting base (6) is provided at one end of the extension tube (2) away from the rotary drive device (1), and a vibratory shovel mounting position is provided on the mounting base (6). The vibratory shovel (3) is connected to the mounting base (6) by a detachable component.

3. The hand-held vibratory spade assembly of claim 2, wherein: The extension tube (2) is connected to a connecting sleeve (7) at one end near the rotary drive device (1), and the connecting sleeve (7) is fixedly connected to the rotary drive device (1) by a locking assembly.

4. The hand-held vibratory spade assembly of claim 3, wherein: The rotary drive device (1) includes an extension cylinder (8), at least a portion of the connecting sleeve (7) is inserted into the extension cylinder (8), and the locking assembly includes a locking ring (9) sleeved on the outer periphery of the extension cylinder (8) and bolt pairs (10) passing through the two ends of the locking ring (9).

5. The hand-held vibratory spade assembly of claim 3, wherein: The rotating assembly includes bearing assemblies (11) sleeved at both ends of the rotating shaft (4) and fixed to the inner wall of the extension tube (2). An axial limiting tube (12) is provided between the two sets of bearing assemblies (11) and abuts against the outer ring of the two sets of bearing assemblies (11). The lower end of the connecting sleeve (7) abuts against the outer ring of one set of bearing assemblies (11). At least a portion of the mounting seat (6) extends into the extension tube (2) and the mounting seat (6) abuts against the outer ring of the other set of bearing assemblies (11).

6. The hand-held vibratory spade assembly of claim 5, wherein: The two ends of the eccentric block (5) have abutting shoulders (13) that abut against the inner ring of the bearing assembly (11).

7. The hand-held vibratory spade assembly of claim 6, wherein: The eccentric block (5) includes at least two splicing sub-blocks, with adjacent splicing sub-blocks connected by positioning pins (14), and each splicing sub-block is fixed to the rotating shaft (4) by fasteners.

8. The hand-held vibratory spade assembly of claim 5, wherein: The rotating shaft (4) is provided with a retaining ring (15) at one end away from the rotating drive device (1), and the retaining ring (15) abuts against the inner ring of another set of bearing groups (11).

9. The hand-held vibratory spade assembly of claim 5, wherein: The output shaft (19) of the rotary drive device (1) is threadedly connected to the rotary shaft (4), and the output shaft (19) has an abutting end face (16) abutting against the inner ring of one of the bearing assemblies (11).

10. The hand-held vibratory spade assembly of claim 2, wherein: The rotary drive device (1) is a series-wound motor; the vibratory shovel mounting position is L-shaped, and the vibratory shovel mounting position has a mounting plane (17) arranged along the axis of the extension tube (2).

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