Sand mixing machine for urban road construction

Abstract

The utility model discloses a gravel mixer for urban road construction, which comprises a support, a mixing drum positioned in the support and two rotating shafts fixed on the circumferential side wall of the mixing drum, the end parts of the rotating shafts are rotatably inserted in the support, one of the rotating shafts is fixedly connected with a power output gear, and the other rotating shaft is fixedly connected with a power output shaft. Two transmission shafts are rotatably inserted into the support, one end of each transmission shaft is fixedly connected with an incomplete gear, the two incomplete gears are located on the two sides of the power output gear and alternately meshed with the power output gear, and the other end of each transmission shaft is fixedly connected with a transmission gear. According to the utility model, the first motor is started to drive the driving gear to rotate, the driving gear drives one transmission gear to rotate and the other transmission gear to synchronously rotate, and at the moment, the two incomplete gears synchronously rotate in opposite directions and alternately mesh with the power output gear for transmission, so that the reciprocating swing of the mixing drum is realized, and the swing amplitude is large in the manner; and the condition of tooth breaking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers, in particular to a sand and gravel mixer for urban road construction. Background Art

[0002] A sand and gravel mixer is a construction machinery that is mainly used to mix cement, sand and gravel, various dry mortar and other construction materials. It is a machine in which a shaft with blades rotates in a cylinder or trough to mix a variety of raw materials into a mixture or a suitable consistency.

[0003] For example, in a sand and gravel mixer for urban road construction disclosed in patent application number 201820109015.5, the second motor is turned on to drive the rotating shaft to rotate, and the cooperation between the active teeth 17 on the incomplete gear and the driven teeth drives the swing frame to swing back and forth, so that the tank body shakes back and forth, further enhancing the mixing effect of the sand and gravel.

[0004] However, in the above patent document, the incomplete gear intermittently contacts the driven teeth inside the swing frame, so that the reset swing is achieved by relying on the tank body's own gravity, resulting in a limited swing angle, insufficient mixing of the sand and gravel inside the tank body, and tooth chipping, causing damage; therefore, a change is urgently needed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a sand and gravel mixer for urban road construction, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sand and gravel mixer for urban road construction, comprising a bracket, a mixing drum located inside the bracket, and two rotating shafts fixed to the circumferential side walls of the mixing drum, wherein the ends of the rotating shafts are rotatably inserted inside the bracket, one of the rotating shafts is fixedly connected to a power output gear, and two transmission shafts are rotatably inserted on the bracket, one end of the transmission shaft is fixedly connected to an incomplete gear, the two incomplete gears are located on both sides of the power output gear and alternately mesh with the power output gear, the other end of the transmission shaft is fixedly connected to a transmission gear, and the two transmission gears are meshed.

[0009] Preferably, a first motor is fixedly embedded inside the bracket, and a driving gear is fixedly connected to an output end of the first motor, and the driving gear is meshed with one of the transmission gears.

[0010] Preferably, a second motor is fixedly mounted on the top of the mixing drum, an output end of the second motor penetrates into the interior of the mixing drum and is fixedly connected to a driving shaft, and circumferentially distributed blades are fixedly connected to the driving shaft.

[0011] Preferably, a feed inlet is connected to the top of the mixing drum, and a sealing cover is detachably installed on the top of the feed inlet.

[0012] Preferably, the sealing cover and the feed port are connected by either a plug-in connection or a threaded connection.

[0013] Preferably, a discharge pipe is provided at the bottom of the mixing drum, and a valve is installed on the discharge pipe.

[0014] (III) Beneficial effects

[0015] The utility model provides a sand and gravel mixer for urban road construction, which has the following beneficial effects:

[0016] 1. In the utility model, the first motor is started to drive the driving gear to rotate, and the driving gear drives one of the transmission gears to rotate, and the other transmission gear rotates synchronously. At this time, the two incomplete gears rotate synchronously in opposite directions and alternately mesh with the power output gear to achieve reciprocating swing of the mixing drum. This method has a large swing amplitude and avoids the situation of tooth hitting.

[0017] 2. In the present invention, the second motor is started to drive the blades to rotate through the driving shaft, so as to mix and stir the mortar inside the mixing drum. The mixing work can be fully realized by coordinating the swinging motion of the mixing drum itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a sealing cover of a sand and gravel mixer for urban road construction proposed by the utility model in a disassembled state;

[0019] Figure 2 This is a front perspective structural diagram of a sand and gravel mixer for urban road construction proposed by the utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of a sand and gravel mixer for urban road construction proposed by the utility model;

[0021] Figure 4 for Figure 2 Enlarged structural diagram at point A.

[0022] In the figure: 1. bracket; 2. mixing drum; 3. rotating shaft; 4. power output gear; 5. incomplete gear; 6. transmission gear; 7. transmission shaft; 8. first motor; 9. driving gear; 10. second motor; 11. driving shaft; 12. blades; 13. feed port; 14. sealing cover; 15. discharge pipe; 16. valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figures 1 to 4 The utility model provides a technical solution: a sand and gravel mixer for urban road construction, comprising a bracket 1, a mixing drum 2 located inside the bracket 1, and two rotating shafts 3 fixed to the circumferential side walls of the mixing drum 2. The ends of the rotating shafts 3 are rotatably inserted into the bracket 1, one of the rotating shafts 3 is fixedly connected to a power output gear 4, and two transmission shafts 7 are rotatably inserted on the bracket 1. One end of the transmission shaft 7 is fixedly connected to an incomplete gear 5, and the two incomplete gears 5 are located on both sides of the power output gear 4 and alternately mesh with the power output gear 4. The other end of the transmission shaft 7 is fixedly connected to a transmission gear 6, and the two transmission gears 6 are meshed.

[0025] A first motor 8 is fixedly embedded inside the bracket 1 , and a driving gear 9 is fixedly connected to an output end of the first motor 8 . The driving gear 9 is meshed with one of the transmission gears 6 .

[0026] Start the first motor 8 to drive the driving gear 9 to rotate, the driving gear 9 drives one of the transmission gears 6 to rotate, and the other transmission gear 6 rotates synchronously, and the transmission gear 6 drives the incomplete gear 5 to rotate. At this time, the two incomplete gears 5 rotate synchronously in opposite directions and alternately mesh with the power output gear 4 for transmission, and finally realize the reciprocating swing of the mixing drum 2. This method has a larger swing amplitude and can mix the sand and gravel more fully; it also avoids the situation of tooth hitting and prevents damage to parts.

[0027] In addition, a second motor 10 is fixedly installed on the top of the mixing drum 2. The output end of the second motor 10 penetrates into the mixing drum 2 and is fixedly connected to a driving shaft 11. The driving shaft 11 is fixedly connected to blades 12 distributed circumferentially.

[0028] The second motor 10 is started to drive the blades 12 to rotate through the driving shaft 11 to mix and stir the sand and gravel inside the mixing drum 2. The mixing work can be fully achieved by coordinating the swinging motion of the mixing drum 2 itself.

[0029] Furthermore, a feed inlet 13 is provided at the top of the mixing drum 2 , and a sealing cover 14 is detachably installed at the top of the feed inlet 13 .

[0030] The sealing cover 14 and the feed port 13 are connected by plug-in connection or threaded connection.

[0031] Sand is added into the mixing drum 2 through the feed port 13 , and the sealing cover 14 and the feed port 13 are detachable structures, which facilitates the sealing of the feed port 13 and also facilitates removal.

[0032] A discharge pipe 15 is provided at the bottom of the mixing drum 2 , and a valve 16 is installed on the discharge pipe 15 .

[0033] Open the valve 16 and discharge the sand material that has been mixed inside the mixing drum 2 through the discharge pipe 15.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sand and gravel mixer for urban road construction, characterized in that: The invention comprises a support (1), a mixing drum (2) located inside the support (1), and two rotating shafts (3) fixed to the circumferential side walls of the mixing drum (2), wherein the ends of the rotating shafts (3) are rotatably inserted inside the support (1), one of the rotating shafts (3) is fixedly connected to a power output gear (4), and two transmission shafts (7) are rotatably inserted on the support (1), one end of the transmission shaft (7) is fixedly connected to an incomplete gear (5), the two incomplete gears (5) are located on both sides of the power output gear (4) and mesh with the power output gear (4) alternately, and the other end of the transmission shaft (7) is fixedly connected to a transmission gear (6), and the two transmission gears (6) are meshed.

2. A sand and gravel mixer for urban road construction according to claim 1, characterized in that: A first motor (8) is fixedly embedded inside the bracket (1), and a driving gear (9) is fixedly connected to the output end of the first motor (8), and the driving gear (9) is meshed with one of the transmission gears (6).

3. A sand and gravel mixer for urban road construction according to claim 1, characterized in that: A second motor (10) is fixedly mounted on the top of the mixing drum (2); an output end of the second motor (10) penetrates into the mixing drum (2) and is fixedly connected to a drive shaft (11); and blades (12) distributed circumferentially are fixedly connected to the drive shaft (11).

4. A sand and gravel mixer for urban road construction according to claim 1, characterized in that: The top of the mixing drum (2) is connected to a feed port (13), and a sealing cover (14) is detachably mounted on the top of the feed port (13).

5. A sand and gravel mixer for urban road construction according to claim 4, characterized in that: The sealing cover (14) and the feed port (13) are connected by plug-in connection or threaded connection.

6. A sand and gravel mixer for urban road construction according to claim 1, characterized in that: A discharge pipe (15) is provided at the bottom of the mixing drum (2), and a valve (16) is installed on the discharge pipe (15).

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