Opening and closing type reduction gearbox device

Abstract

The utility model discloses an opening and closing type reduction gearbox device which comprises a stirring machine and a reduction gearbox. According to the open-close type reduction gearbox device, the stirring shaft end flange, the fixed torque disc, the torque key, the speed reducer end flange and the spline shaft are used for transmitting torque, when the torque key on the speed reducer end flange is adjusted to the horizontal direction, the fixed torque disc and the speed reducer end flange can be separated, and at the moment, a speed reducer support and a supporting frame bolt are detached; the reduction gearbox installation pedestal can rotate around the supporting arm to be opened, opening and closing of the reduction gearbox are achieved under the condition that the reduction gearbox is not disassembled, the later maintenance cost is effectively reduced, a stirring shaft end flange, a fixed moment disc, a moment key and a reduction gearbox end flange are used for replacing a traditional spline sleeve, and a spline shaft is matched for transmitting torque. In the operation process of equipment, the impact load between the reduction gearbox and the stirring shaft is effectively reduced, and stable and continuous operation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically to an openable gearbox device. Background Technology

[0002] With the rapid development of infrastructure construction in my country, the demand for mixers is also gradually increasing. When the shaft sealing system of traditional mixers malfunctions and affects normal operation, the repair process is often extremely cumbersome and costly due to the limitations of its compact and complex structure. This process usually requires disassembling the gearbox first, which is difficult and costly, causing a significant impact on the construction progress. At the same time, the connection structure between the mixing shaft and the gearbox of traditional mixers is relatively fixed, without any floating space to automatically adjust concentricity, which increases the impact force and wear between the splined connection components, further shortening the service life of the equipment.

[0003] Chinese patent CN209067771U discloses a mixer gearbox, aiming to solve the problem of inconvenient maintenance in existing mixer gearboxes. It employs a design with a first side plate, a second side plate, a screw, a first nut, a second nut, and threaded holes. The screw passes sequentially through the first and second side plates, threading the output end of the drive motor onto the surface of the screw. The first nut is threaded onto the surface of the screw, locking it against the second side plate. The second nut is threaded onto the surface of the screw, locking it against the first side plate. A connecting slot and a positioning block are also included, allowing the positioning block to be inserted into the slot. This enables quick and accurate installation of the gearbox, simplifying the maintenance process. However, while this patent provides a gearbox design for easy installation and removal, it does not address the need for maintenance without disassembling the gearbox.

[0004] Therefore, it is necessary to design a more efficient and economical gearbox solution that allows for opening and closing without disassembling the gearbox, facilitating the maintenance and replacement of the shaft head. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides an openable and closable gearbox device, which solves the problem of opening and closing the gearbox without disassembling it, thereby enabling the maintenance and replacement of the shaft head.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an openable gearbox device, comprising a mixer and a gearbox, wherein a support arm is installed on the front side wall of the mixer at a position on the left side, the support arm is movably hinged to a gearbox mounting seat via a pin, a gearbox is installed on the front side wall of the gearbox mounting seat, a gearbox bracket is installed on the right side wall of the gearbox mounting seat, a support frame is provided on the front side wall of the mixing shaft at a position on the right side of the gearbox mounting seat, the gearbox bracket is installed to the front side wall of the support frame via bolts, the mixing shaft is rotatably installed on the front inner wall of the mixing shaft at a position directly opposite the gearbox via a bearing, the front end of the mixing shaft extends to the front side of the mixer, a mixing shaft end flange is installed to the front end of the mixing shaft, a fixed torque plate is installed on the front side wall of the mixing shaft end flange, a splined shaft is installed to the rear output end of the gearbox, a gearbox end flange is installed at the rear end of the splined shaft, and a torque key is provided between the fixed torque plate and the gearbox mounting seat.

[0007] Preferably, the torque keys are arranged in groups of four, with two torque keys installed on the front side wall of the stirring shaft end flange and two torque keys installed on the rear side wall of the reducer end flange, and the torque keys are engaged with the fixed torque disc.

[0008] Preferably, the motor of the mixer is mounted on its front side wall and located below the gearbox, and the output end of the motor is connected to the input end of the gearbox through the cooperation of a pulley and a belt.

[0009] Preferably, there are two stirring shafts arranged symmetrically in front of and behind inside the mixer, and the outer wall of the stirring shaft is provided with rotating blades for stirring.

[0010] Preferably, the reduction gearbox is a reversible reduction gearbox.

[0011] Preferably, the outer wall of the fixed torque disk has a number of grooves in a cross shape, and torque keys that match the number of grooves are engaged inside the grooves.

[0012] Preferably, the outer wall of the fixed torque disk has four grooves in a cross shape, and four torque keys are engaged inside the grooves.

[0013] Compared with the prior art, the present invention provides an openable and closable gearbox device, which has the following beneficial effects:

[0014] 1. This openable gearbox device uses a stirring shaft end flange, a fixed torque disc, a torque key, a gearbox end flange, and a splined shaft to transmit torque. When the torque key on the gearbox end flange is adjusted to the horizontal position, the fixed torque disc and the gearbox end flange can be separated. At this time, the bolts of the gearbox bracket and the support frame can be removed, and the gearbox mounting base can be rotated and opened around the support arm. The gearbox can be opened and closed without disassembling it, effectively reducing the cost of later maintenance.

[0015] 2. This openable gearbox device replaces the traditional spline sleeve with a flange at the end of the stirring shaft, a fixed torque plate, a torque key, and a flange at the end of the reducer. It works with the spline shaft to transmit torque, effectively reducing the impact load between the gearbox and the stirring shaft during equipment operation, thus achieving stable and continuous operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the mixer assembly of the openable and retractable gearbox device described in this utility model;

[0017] Figure 2 This is an exploded view of the structure of the openable gearbox device of this utility model;

[0018] Figure 3 This is a schematic diagram illustrating the working principle of the openable and closable gearbox device described in this utility model.

[0019] The markings in the attached diagram are described below:

[0020] 1. Agitator shaft; 2. Support arm; 3. Gearbox mounting base; 4. Gearbox; 5. Support frame; 6. Gearbox bracket; 7. Agitator shaft end flange; 8. Fixed torque disc; 9. Gearbox end flange; 10. Torque key; 11. Splined shaft; 12. Pin. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Please see Figure 1-3 This utility model provides an openable gearbox device, including a mixer and a gearbox 4. A support arm 2 is installed on the front side wall of the mixer, located on the left side. The support arm 2 is movably hinged to a gearbox mounting seat 3 via a pin 12. The gearbox 4 is installed on the front side wall of the gearbox mounting seat 3. A gearbox bracket 6 is installed on the right side wall of the gearbox mounting seat 3. A support frame 5 is provided on the front side wall of the mixing shaft 1, located on the right side of the gearbox mounting seat 3. The gearbox bracket 6 is installed on the front side wall of the support frame 5 via bolts. The mixing shaft 1 is rotatably installed on the front inner wall of the mixing shaft 1, located directly opposite the gearbox 4, via a bearing. The front end of the mixing shaft 1 extends to the front side of the mixer. A mixing shaft end flange 7 is installed on the front end of the mixing shaft 1. A fixing torque plate 8 is installed on the front side wall of the mixing shaft end flange 7. A spline shaft 11 is installed on the rear output end of the gearbox 4. A gearbox end flange 9 is installed at the rear end of the spline shaft 11. A torque key 10 is provided between the fixing torque plate 8 and the gearbox mounting seat 3.

[0024] Furthermore, four torque keys 10 are grouped together. Two torque keys 10 are installed on the front side wall of the stirring shaft end flange 7, and two torque keys 10 are installed on the rear side wall of the reducer end flange 9. The torque keys 10 are engaged with the fixed torque disk 8. When the reducer end flange 9 rotates, the stirring shaft end flange 7 is driven to rotate synchronously through the cooperation of the torque keys 10 and the fixed torque disk 8.

[0025] Furthermore, the motor of the mixer is installed on its front side wall and located below the gearbox 4. The output end of the motor is connected to the input end of the gearbox 4 through the cooperation of pulleys and belts. The motor transmits power to the gearbox 4 through the cooperation of pulleys and belts, thereby driving the gearbox 4 to rotate.

[0026] Furthermore, there are two stirring shafts 1 arranged symmetrically in front and behind inside the mixer, and the outer wall of the stirring shaft 1 is provided with rotating blades for stirring. The stirring shaft 1 drives the rotating blades on its outer side to rotate and stir the raw materials inside the mixer.

[0027] Furthermore, the reduction gearbox 4 is a reversible reduction gearbox. The reduction gearbox 4 reverses and reduces the speed of the power from the motor to drive the stirring shaft 1 to rotate, thereby reducing the load on the motor.

[0028] Furthermore, the outer wall of the fixed torque disk 8 has four grooves in a cross shape, and four torque keys 10 are engaged inside the grooves. When the spline shaft 11 drives the reducer end flange 9 to rotate, the reducer end flange 9 drives the stirring shaft end flange 7 to rotate through the cooperation of the torque keys 10 and the fixed torque disk 8.

[0029] In operation, the power motor drives the input end of the reduction gearbox 4 to rotate through the cooperation of the pulley and the transmission belt. The rotation of the input end of the reduction gearbox 4 reduces the speed through the internal gears. The reduction gearbox 4 outputs power through the spline shaft 11, which in turn drives the spline shaft 11 to rotate. The spline shaft 11 drives the reducer end flange 9 to rotate. The reducer end flange 9 drives the agitator end flange 7 to rotate through the cooperation of the torque key 10 and the fixed torque plate 8. The agitator end flange 7 drives the agitator shaft 1 to rotate. The agitator shaft 1 drives the rotating blades on its outer side to rotate, thus agitating the raw materials inside the agitator. When maintenance is required, the two torque keys 10 installed on the surface of the reducer end flange 9 are rotated to a horizontal position. Then, the bolts fixing the reduction gearbox bracket 6 to the support frame 5 are removed. By pulling the reduction gearbox bracket 6, the reduction gearbox mounting base 3 is deflected outward along the pin shaft 12, thereby disengaging the reducer end flange 9 from the fixed torque plate 8, thus completing the opening operation and facilitating internal maintenance.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable gearbox device, comprising a mixer and a gearbox (4), characterized in that: A support arm (2) is installed on the front side wall of the mixer and on the left side. The support arm (2) is movably hinged to a gearbox mounting seat (3) via a pin (12). A gearbox (4) is installed on the front side wall of the gearbox mounting seat (3). A gearbox bracket (6) is installed on the right side wall of the gearbox mounting seat (3). A support frame (5) is provided on the front side wall of the stirring shaft (1) and on the right side of the gearbox mounting seat (3). The gearbox bracket (6) is installed on the front side wall of the support frame (5) by bolts. The stirring shaft (1) is rotatably installed on the front inner wall of the stirring shaft (1) and on the position directly opposite the gearbox (4) via a bearing. The front end of the stirring shaft (1) extends to the front side of the mixer. The stirring shaft end flange (7) is installed on the front end of the stirring shaft (1).

2. The opening and closing type gearbox device according to claim 1, characterized in that: A fixed torque plate (8) is installed on the front side wall of the stirring shaft end flange (7), the spline shaft (11) is installed on the rear output end of the gearbox (4), and the gearbox end flange (9) is installed at the rear end of the spline shaft (11).

3. The opening and closing type gearbox device according to claim 2, characterized in that: A torque key (10) is provided between the fixed torque disk (8) and the gearbox mounting base (3).

4. The opening and closing type gearbox device according to claim 3, characterized in that: The torque keys (10) are in groups of four. Two torque keys (10) are installed on the front side wall of the stirring shaft end flange (7) and two torque keys (10) are installed on the rear side wall of the reducer end flange (9). The torque keys (10) are engaged with the fixed torque plate (8).

5. The opening and closing type gearbox device according to claim 1, characterized in that: The motor of the mixer is installed on its front side wall and located below the gearbox (4). The output end of the motor is connected to the input end of the gearbox (4) through the cooperation of pulleys and belts.

6. The opening and closing type gearbox device according to claim 1, characterized in that: There are two stirring shafts (1) arranged symmetrically in front and behind inside the mixer, and the outer wall of the stirring shafts (1) is provided with rotating blades for stirring.

7. The opening and closing type gearbox device according to claim 1, characterized in that: The reduction gearbox (4) is a reversible reduction gearbox.

8. The opening and closing type gearbox device according to claim 2, characterized in that: The outer wall of the fixed torque disk (8) is provided with a number of grooves in a cross shape, and a torque key (10) that matches the number of grooves is engaged inside the grooves.

9. The opening and closing type gearbox device according to claim 8, characterized in that: The outer wall of the fixed torque disk (8) is provided with four grooves in a cross shape, and four torque keys (10) are engaged in the grooves.

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