A shotcrete machine without motor drive

Abstract

A shotcrete machine that does not require a motor drive. It mainly solves the problem that the rotors of existing shotcrete machines are mostly driven by motors when rotating to discharge materials, and some even require explosion-proof motors, which are relatively expensive. It is characterized in that: a rotatable first rotating member (3) for discharging materials is provided in the discharge chamber, an air inlet (11) connected to an air source and a discharge port (12) arranged corresponding to the first rotating member are provided on the shell, a second rotating member (5) is rotatably provided in the shell, a blade (51) is provided on the second rotating member corresponding to the air inlet, and the second rotating member drives the first rotating member to rotate through a reduction mechanism. The present invention provides a shotcrete machine that does not require a motor drive. The first rotating member is driven to rotate by the second rotating member driven by the air source, which reduces the cost, and has a simple structure and is easy to repair.

Description

Technical Field

[0001] The invention belongs to the field of shotcrete machines, and in particular relates to a shotcrete machine which does not require motor drive. Background Art

[0002] Shotcrete machines are mainly used for shotcrete grouting operations in high-speed rail, highway and subway tunnels, culverts, hydropower projects, civil air defense projects, mine shafts and other concrete projects.

[0003] The rotors of existing shotcrete machines are mostly driven by motors when rotating to discharge materials, and some even require explosion-proof motors, which are relatively expensive. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention provides a shotcrete machine that does not require a motor drive, mainly to solve the problem that the rotors of existing shotcrete machines are mostly driven by motors when rotating to discharge materials, and some even require explosion-proof motors, which are costly.

[0005] The technical solution adopted by the present invention is:

[0006] A shotcrete machine that does not require motor drive comprises a shell, a discharge chamber is provided in the shell, a first rotatable rotating member for discharging materials is provided in the discharge chamber, an air inlet hole connected to an air source and a discharge port arranged corresponding to the first rotating member are provided on the shell, a second rotating member is rotatably provided in the shell, blades are provided on the second rotating member corresponding to the air inlet hole, and the second rotating member drives the first rotating member to rotate through a reduction mechanism.

[0007] The second rotating member is a flywheel.

[0008] The speed reduction mechanism is a planetary gear transmission mechanism.

[0009] The shell comprises a bottom cover, the second rotating member is arranged in the bottom cover, an inclined hole communicating with the air inlet hole is arranged on the bottom cover, and the inclined hole is arranged corresponding to the back of the blade.

[0010] It also includes a cover, the bottom cover is arranged inside the cover, the air inlet is arranged on the cover, a buffer cavity is arranged inside the cover, the buffer cavity is communicated with the inclined hole, and the buffer cavity is communicated with the air inlet.

[0011] The buffer cavity is an annular cavity.

[0012] The first rotating member includes a rotating cover and a base, the base is provided with a blowing hole, an annular air passage is formed between the rotating cover and the inner wall of the shell, the air passage is connected with the discharge port, and the bottom cover is provided with an exhaust hole connected with the blowing hole.

[0013] The shortest distance between the inclined hole and the exhaust hole is 1.5 times the distance between adjacent blades.

[0014] The air inlet holes are provided with two or the air inlet pipe connected with the air inlet holes is provided with a regulating valve.

[0015] The planetary gear transmission mechanism includes a driving shaft interlocked with the second rotating member, a plurality of first planetary gears are meshed on the outer wall of the driving shaft, and the first rotating frame is driven to rotate when the plurality of first planetary gears rotate, the first rotating frame includes a transmission seat, a plurality of second planetary gears are meshed on the outer wall of the transmission seat, and the second planetary gears are driven to rotate when the second rotating frame rotates, and the second rotating frame is interlocked with the first rotating member.

[0016] The beneficial effects of the present invention are as follows: the present invention provides a shotcrete machine that does not require a motor drive, the first rotating member is driven to rotate by the second rotating member driven by an air source, the cost is reduced, the structure is simple, and the repair is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0018] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the present invention.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0020] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the present invention.

[0021] Figure 5 It is a partial explosion schematic diagram of an embodiment of the present invention.

[0022] Figure 6 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0023] Figure 7 A cross-sectional view of a base according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings: As shown in the figure, a spraying machine that does not require motor drive includes a shell 1, a discharge chamber 2 is provided in the shell, a rotatable first rotating member 3 for discharging is provided in the discharge chamber, an air inlet 11 connected to an air source and a discharge port 12 corresponding to the first rotating member are provided on the shell, a second rotating member 5 is rotatably provided in the shell, a blade 51 is provided on the second rotating member corresponding to the air inlet, the second rotating member drives the first rotating member to rotate through a speed reduction mechanism, the air flow enters from the inclined hole, and the air pressure on the back of the blade is greater than the air pressure in front of the blade (refer to Figure 4 The part through which the gas enters the inclined hole is the back of the blade, and the second rotating part rotates counterclockwise), thereby pushing the blade to rotate. If the discharge pipe is blocked, the airflow cannot be transported at this time, and the second rotating part will also stop rotating, interrupting the material delivery to prevent the blockage from becoming more serious.

[0025] In this embodiment, as shown in the figure, the second rotating member is a flywheel.

[0026] In this embodiment, as shown in the figure, the speed reduction mechanism is a planetary gear transmission mechanism.

[0027] In this embodiment, as shown in the figure, the housing includes a bottom cover 13, the second rotating member is arranged in the bottom cover, and the bottom cover is provided with an inclined hole 131 connected with the air inlet hole, and the inclined hole is arranged corresponding to the back of the blade. The inclined hole injects air into the back of the blade after intake, so that the second rotating member rotates, and the structure is simple and easy to use.

[0028] In this embodiment, as shown in the figure, a cover 14 is further included, the bottom cover is arranged inside the cover, the air inlet is arranged on the cover, a buffer cavity 141 is arranged inside the cover, the buffer cavity is communicated with the inclined hole, and the buffer cavity is communicated with the air inlet, so that the gas enters evenly and the second rotating member rotates more smoothly.

[0029] In this embodiment, as shown in the figure, the buffer cavity is an annular cavity. The bottom cover is clearance-matched with the second rotating member.

[0030] In this embodiment, as shown in the figure, the first rotating member includes a rotating cover 31 and a base 32, the base is provided with a blowing hole 321, an annular air channel 33 is formed between the rotating cover and the inner wall of the shell, the air channel is connected to the discharge port, and the bottom cover is provided with an exhaust hole 132 connected to the blowing hole. As a preferred solution, the transmission mechanism includes an upper cover 71, the upper cover is provided with an air channel 711 connected to the exhaust hole, the airflow of the air channel is introduced into the inner cavity of the base and then through the blowing hole, the blowing hole is also an inclined hole, and cooperates with the rotating base to form a rotating airflow in the shell for discharging.

[0031] Furthermore, the blowing hole is also an inclined hole, which is used to purge the material to prevent blockage, and evenly mix the material and the gas and discharge them from the discharge port.

[0032] In this embodiment, as shown in the figure, the closest distance between the inclined hole and the exhaust hole is 1.5 times the spacing between adjacent blades. Preferably, the flux of each set of exhaust holes is more than twice that of the inlet holes (which can be achieved by the number or the diameter), which is conducive to the rapid rotation of the impeller due to the pressure difference between the inlet and exhaust. Depending on the size of the body, there can be multiple sets of inclined holes and exhaust holes on the outer shell to increase the driving power.

[0033] In this embodiment, as shown in the figure, the air inlet holes are provided with two or the air inlet pipe connected to the air inlet hole is provided with a regulating valve. The two air inlet holes, one for normal direct air supply, and the other controlled by a solenoid valve, adjust the air supply amount according to the rotation speed of the first rotating member, and due to the flywheel power storage effect, the impeller can be rotated evenly when the air supply pressure is unstable.

[0034] In this embodiment, as shown in the figure, the planetary gear transmission mechanism includes a driving shaft 61 linked to the second rotating member, and the outer wall of the driving shaft is meshed with a plurality of first planetary gears 62. When the plurality of first planetary gears rotate, the first rotating frame 63 is driven to rotate. The first rotating frame includes a transmission seat, and the outer wall of the transmission seat is meshed with a plurality of second planetary gears 64. When the second planetary gears rotate, the second rotating frame 65 is driven to rotate. The second rotating frame is linked to the first rotating member.

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A shotcrete machine that does not require a motor drive, comprising a housing (1), wherein a discharge cavity (2) is provided in the housing, and characterized in that: A rotatable first rotating member (3) for discharging materials is provided in the discharging chamber, an air inlet (11) connected to an air source and a discharging port (12) arranged corresponding to the first rotating member are provided on the shell, a rotatable second rotating member (5) is provided in the shell, a blade (51) is provided on the second rotating member corresponding to the air inlet, and the second rotating member drives the first rotating member to rotate via a speed reduction mechanism; The housing comprises a bottom cover (13), the second rotating member is arranged in the bottom cover, the bottom cover is provided with an inclined hole (131) communicating with the air inlet hole, and the inclined hole is arranged corresponding to the back of the blade; It also comprises a cover (14), the bottom cover being arranged inside the cover, the air inlet being arranged on the cover, a buffer cavity (141) being arranged inside the cover, the buffer cavity being in communication with the inclined hole, and the buffer cavity being in communication with the air inlet.

2. A shotcrete machine without motor drive according to claim 1, characterized in that: The second rotating member is a flywheel.

3. A shotcrete machine without motor drive according to claim 1, characterized in that: The speed reduction mechanism is a planetary gear transmission mechanism.

4. The shotcrete machine without motor drive according to claim 1, characterized in that: The buffer cavity is an annular cavity.

5. The shotcrete machine without motor drive according to claim 1, characterized in that: The first rotating member comprises a rotating cover (31) and a base (32), the base being provided with a blowing hole (321), an annular air passage (33) being formed between the rotating cover and the inner wall of the shell, the air passage being connected to the discharge port, and the bottom cover being provided with an exhaust hole (132) connected to the blowing hole.

6. A shotcrete machine without motor drive according to claim 5, characterized in that: The shortest distance between the inclined hole and the exhaust hole is 1.5 times the distance between adjacent blades.

7. The shotcrete machine without motor drive according to claim 1, characterized in that: The air inlet holes are provided with two or the air inlet pipe connected with the air inlet holes is provided with a regulating valve.

8. The shotcrete machine without motor drive according to claim 3, characterized in that: The planetary gear transmission mechanism comprises a driving shaft (61) interlocked with the second rotating member, a plurality of first planetary gears (62) being meshed on an outer wall of the driving shaft, and when the plurality of first planetary gears rotate, the first rotating frame (63) is driven to rotate, the first rotating frame comprises a transmission seat, a plurality of second planetary gears (64) being meshed on an outer wall of the transmission seat, and when the second planetary gears rotate, the second rotating frame (65) is driven to rotate, and the second rotating frame is interlocked with the first rotating member.

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