Transmission structure of main machine of concrete vibrator

Abstract

The utility model discloses a transmission structure of a concrete vibrator main machine, which comprises a main machine and a rod body, the rod body is detachably connected with the main machine, the main machine comprises a transmission shell and a driving motor, the driving motor is arranged on the transmission shell, the rod body comprises a flexible shaft, the driving motor can act on the flexible shaft to rotate, and a planetary gear is arranged in the transmission shell. The planetary gear is installed between the motor shaft of the driving motor and the flexible shaft and transmits rotating force of the motor shaft of the driving motor to the flexible shaft. Compared with the prior art, the utility model has the advantages that through the arrangement of the planetary gear, the torsion generated by the bending rotation of the flexible shaft is eliminated when being transmitted to the planetary gear, namely, the motor shaft of the driving motor is not influenced by the rotation radial load of the flexible shaft when rotating, and the stability of the motor shaft of the driving motor during rotation output is ensured; and the concentricity of the motor shaft of the driving motor and the flexible shaft during rotation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete vibrating rods, in particular to a mainframe of a concrete vibrator, and in particular to a transmission structure of the mainframe of the concrete vibrator. Background Art

[0002] A concrete vibrator is a device that uses power through a certain device as a vibration source to generate frequent vibrations, and transmits this vibration to the concrete to vibrate and compact the concrete.

[0003] Some concrete vibrators, such as a concrete vibrator rod disclosed in application number CN2006100440401, have a motor shaft and a flexible shaft connected via a connecting lock, and the motor can drive the flexible shaft to rotate via the motor shaft.

[0004] However, when the concrete vibrator is in use, the flexible shaft will bend locally, generating a large torque that is fed back to the motor shaft, causing the motor shaft to be subjected to an increased radial load, making the rotational output and rotational transmission stability of the motor shaft worse, and easily affecting the concentricity between the motor shaft and the flexible shaft during rotation. Utility Model Content

[0005] The utility model aims to solve the problem that the output stability of the existing concrete vibrator motor is poor and the rotation concentricity between the motor shaft and the flexible shaft is easily affected. The technical problem to be solved by the utility model is to provide a transmission structure of the concrete vibrator main unit which can improve the stability of the motor when driven and ensure the concentricity of the rotation output.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: the transmission structure of the main unit of the concrete vibrator comprises a main unit and a flexible shaft linked with the main unit;

[0007] The main machine includes a transmission housing and a driving motor, the driving motor is mounted on the transmission housing, and the driving motor can drive the flexible shaft to rotate;

[0008] A planetary gear is installed in the transmission housing, and the planetary gear is installed between the motor shaft of the driving motor and the flexible shaft. The planetary gear transmits the rotational force of the motor shaft of the driving motor to the flexible shaft.

[0009] A further preferred solution of the utility model is: the main machine also includes a shell, the transmission shell and the drive motor are arranged in the shell, and a connecting part is provided on the transmission shell, and the connecting part is exposed from the shell.

[0010] A further preferred solution of the utility model is that a hose is provided outside the flexible shaft, a hose connector is provided on the hose, and the hose, the hose connector and the connecting portion of the transmission housing are detachably connected.

[0011] A further preferred solution of the utility model is: an outer flange is provided at the end of the hose, and the hose connector is passed through the hose, an inner flange matching the outer flange is provided on the hose connector, the hose connector is threadedly connected or snap-connected to the connecting part, and the outer flange is located between the inner flange and the connecting part.

[0012] A further preferred solution of the utility model is: a transmission shaft capable of rotating the flexible shaft is installed on the planetary gear, and the end of the transmission shaft passes through the connecting portion of the transmission housing and can be inserted into the flexible hose.

[0013] A further preferred solution of the utility model is that the transmission shaft and the flexible shaft are matched with each other through a spline structure or a non-circular structure.

[0014] A further preferred solution of the utility model is that a bearing is installed in the transmission housing, and the transmission shaft is arranged through the inner ring of the bearing.

[0015] A further preferred solution of the utility model is: the planetary gear includes a ring gear, a sun gear arranged in the ring gear, a plurality of planetary gears meshing between the ring gear and the sun gear, and a planetary carrier connecting the plurality of planetary gears, and the transmission shaft is connected to the planetary carrier.

[0016] A further preferred solution of the utility model is: a positioning ring is fixed on the transmission housing, and the transmission housing and the positioning ring clamp the planetary gear for installation to limit the axial movement of the planetary gear.

[0017] A further preferred solution of the utility model is that the gear ring is arranged in the positioning ring or the transmission housing, and the gear ring and the positioning ring or the transmission housing are matched with tooth grooves to limit the axial rotation of the gear ring.

[0018] Compared with the prior art, the advantage of the utility model lies in that, through the setting of the planetary gears, the torque generated by the bending rotation of the flexible shaft is eliminated when it is transmitted to the planetary gears, so that the motor shaft of the drive motor is not affected by the radial load of the flexible shaft during rotation, thereby ensuring the stability of the motor shaft of the drive motor during rotation output and improving the concentricity of the motor shaft of the drive motor, the transmission shaft and the flexible shaft during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1This is a schematic diagram of the structure of a vibrator in a preferred embodiment of the utility model;

[0021] Figure 2 An exploded view of a vibrator according to a preferred embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure inside the transmission housing of the preferred embodiment of the utility model;

[0023] Figure 4 This is a cross-sectional view of the connection between the rod body and the host in a preferred embodiment of the utility model.

[0024] In the figure: 01, main machine: 1, outer shell, 1a, front shell, 1b, rear shell; 2, transmission shell, 2a, connecting part; 3, driving motor, 3a, motor shaft; 4, planetary gear, 4a, sun gear, 4b, planetary gear, 4c, planetary carrier, 4d, ring gear, 4d1, protrusion; 5, transmission shaft; 6, bearing; 7, flexible shaft joint; 8, positioning ring; 9, hose joint, 9a, inner flange; 02, rod body: 10, hose, 10a, outer flange; 11, flexible shaft. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] This embodiment mainly describes the transmission structure of the main unit of the concrete vibrator which can improve the stability of the motor drive and ensure the concentricity of the rotation output, as follows:

[0028] like Figure 1-4 As shown, the transmission structure of the main unit of the concrete vibrating rod includes a main unit 01 and a rod body 02 detachably connected to the main unit 01. The main unit 01 includes an outer shell 1, a transmission shell 2 fixed in the outer shell 1 and partially exposed, and a driving motor 3 installed on the transmission shell 2 and located in the outer shell 1. The rod body 02 includes a hose 10 and a hose connector 9 passed through the hose 10. The rod body 02 and the main unit 01 are detachably connected via the hose connector 9.

[0029] Preferably, the housing 1 comprises a front housing 1a and a rear housing 1b, the front housing 1a and the rear housing 1b are enclosed in the housing 1, and the front housing 1a and the rear housing 1b clamp the transmission housing 2 and are fixed by screws.

[0030] In this embodiment, the portion of the transmission case 2 that is exposed from the outer shell 1 is the connecting portion 2a, and the hose connector 9 is detachably connected to the connecting portion 2a by means of threads or snaps, and an outer flange 10a is provided at one end of the hose 10, and an inner flange 9a is provided on the hose connector 9. The hose connector 9 is passed through the hose 10, and the inner flange 9a cooperates with the outer flange 10a to limit the hose connector 9 from sliding out of the hose 10.

[0031] When the hose connector 9 is connected to the connecting portion 2a of the transmission housing 2, the outer flange 10a on the hose 10 is located between the inner flange 9a and the connecting portion 2a, and the length of the hose connector 9 is usually much shorter than the length of the hose 10. Therefore, when the hose connector 9 is passed through the hose 10 and connected to the transmission housing 2, the hose 10 will not be detached. Preferably, the outer flange 10a at one end of the hose 10 is usually hardened.

[0032] like Figure 3 As shown, a positioning ring 8 is fixed in the transmission housing 2 by screws, and a planetary gear 4 is sandwiched between the positioning ring 8 and the transmission housing 2. The positioning ring 8 and the transmission housing 2 limit the axial movement of the planetary gear 4. A plurality of protrusions 4d1 are provided on the ring gear 4d of the planetary gear 4. The ring gear 4d is arranged in the positioning ring 8. The ring gear 4d cooperates with the tooth grooves between the protrusions 4d1 and the positioning ring 8. When the positioning ring 8 is fixed, the axial rotation of the ring gear 4d is limited.

[0033] The motor shaft 3a of the driving motor 3 is inserted into the transmission housing 2 and passes through the positioning ring 8. The motor shaft 3a is connected to the sun gear 4a of the planetary gear 4. A plurality of planetary gears 4b are meshed between the ring gear 4d and the sun gear 4a. The plurality of planetary gears 4b are connected to a planet carrier 4c, and a transmission shaft 5 is installed on the planet carrier 4c. The transmission shaft 5 extends out of the connecting portion 2a of the transmission housing 2. When the rod body 02 is installed on the transmission housing 2, the transmission shaft 5 is inserted into the hose 10.

[0034] In order to ensure the rotation stability of the transmission shaft 5 , a bearing 6 is installed in the transmission housing 2 . The outer ring of the bearing 6 is usually interference fixed in the transmission housing 2 , and the transmission shaft 5 passes through the inner ring of the bearing 6 .

[0035] like Figure 2 and Figure 4 As shown, the rod body 02 also includes a flexible shaft 11, which is arranged in the hose 10. A flexible shaft connector 7 is installed on the transmission shaft 5 inserted into the hose 10. The flexible shaft connector 7 is plugged into the flexible shaft 11 and matched through a spline structure or a non-circular structure.

[0036] When the motor shaft 3a of the drive motor 3 transmits the rotational force to the flexible shaft 11 through the planetary gear 4 and the transmission shaft 5, the rotation of the flexible shaft 11 will also transmit the torque generated by its bending rotation to the transmission shaft 5, the planetary gear 4 and the drive motor 3. The setting of the planetary gear 4 can withstand larger axial loads and radial loads, eliminate the radial load transmitted to the drive motor 3, ensure the stability of the motor shaft 3a of the drive motor 3 during rotational output, and improve the concentricity of the motor shaft 3a of the drive motor 3, the transmission shaft 5 and the flexible shaft 11 during rotation.

[0037] Preferably, the working principle of the vibration of the rod body 02 is an eccentric working principle, and the working principle structure can refer to the silent concrete vibration rod disclosed in the announcement number CN2571919Y.

[0038] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0039] The transmission structure of the concrete vibrator main unit provided by the utility model is introduced in detail above. In this article, specific examples are used to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. The transmission structure of the main unit of the concrete vibrator includes the main unit and a flexible shaft linked with the main unit; The main machine includes a transmission housing and a driving motor, the driving motor is mounted on the transmission housing, and the driving motor can drive the flexible shaft to rotate; It is characterized in that A planetary gear is installed in the transmission housing, and the planetary gear is installed between the motor shaft of the driving motor and the flexible shaft. The planetary gear transmits the rotational force of the motor shaft of the driving motor to the flexible shaft.

2. The transmission structure of the concrete vibrator main unit according to claim 1, characterized in that: The host also includes a shell, the transmission shell and the driving motor are arranged in the shell, and a connecting part is provided on the transmission shell, and the connecting part is exposed from the shell.

3. The transmission structure of the main unit of the concrete vibrator according to claim 2, characterized in that: A hose is arranged outside the flexible shaft, a hose connector is arranged on the hose, and the hose, the hose connector and the connecting part of the transmission housing are detachably connected.

4. The transmission structure of the main unit of the concrete vibrator according to claim 3, characterized in that: The hose end is provided with an outer flange, and the hose connector is passed through the hose. The hose connector is provided with an inner flange that matches the outer flange. The hose connector is threadedly or snap-connected to the connecting part, and the outer flange is located between the inner flange and the connecting part.

5. The transmission structure of the main unit of the concrete vibrator according to claim 4, characterized in that: A transmission shaft capable of rotating the flexible shaft is installed on the planetary gear, and the end of the transmission shaft passes through the connecting portion of the transmission housing and can be inserted into the flexible hose.

6. The transmission structure of the main unit of the concrete vibrator according to claim 5, characterized in that: The transmission shaft and the flexible shaft are matched with each other through a spline structure or a non-circular structure.

7. The transmission structure of the main unit of the concrete vibrator according to claim 5, characterized in that: A bearing is installed in the transmission housing, and the transmission shaft is arranged through the inner ring of the bearing.

8. The transmission structure of the main unit of the concrete vibrator according to claim 5, characterized in that: The planetary gear comprises a ring gear, a sun gear arranged in the ring gear, a plurality of planetary gears meshing between the ring gear and the sun gear, and a planet carrier connecting the plurality of planetary gears, and the transmission shaft is connected to the planet carrier.

9. The transmission structure of the main unit of the concrete vibrator according to claim 8, characterized in that: A positioning ring is fixed on the transmission housing, and the transmission housing and the positioning ring clamp the planetary gear for installation, thereby limiting the axial movement of the planetary gear.

10. The transmission structure of the main unit of the concrete vibrator according to claim 9, characterized in that: The gear ring is arranged in the positioning ring or the transmission housing, and the gear ring cooperates with the tooth grooves between the positioning ring or the transmission housing to limit the axial rotation of the gear ring.

Images