Shotcrete Machine

Abstract

The utility model discloses a shotcrete machine, the shotcrete machine comprises a mixing component, a shotcrete pump and a first protective cover, the mixing component comprises a shell and a mixing device, a mixing chamber is provided in the shell, and a feed port and a discharge port are provided in the shell; the shotcrete pump comprises a pump shell and a conveying member, the pump shell is located below the discharge port, a shotcrete chamber is defined in the pump shell, the pump shell is provided with a shotcrete inlet and a shotcrete outlet, the shotcrete inlet is connected with the discharge port, the first protective cover is covered on the outside of the shell and the pump shell, the top of the first protective cover is open, the feed port is exposed on the outside of the first protective cover from the top open port of the first protective cover, and the top open port of the first protective cover is blocked by the wall plate of the shell provided with the feed port. According to the shotcrete machine of the embodiment of the utility model, the dust generated by the shotcrete machine during operation can be better prevented from diffusing into the air by setting the first protective cover.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a shotcrete machine. Background Art

[0002] In the related technology, there is a problem of excessive dust in the working process of the spraying machine, which not only pollutes the environment, but also seriously affects the health of the workers. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a shotcrete machine, which can better prevent the dust generated during operation from being diffused into the air.

[0004] According to the embodiment of the utility model, the shotcrete machine comprises: a mixing component, the mixing component comprises a shell and a mixing device, a mixing chamber is provided in the shell, the shell is provided with a feed port and a discharge port connected with the mixing chamber, the mixing device is rotatably arranged in the mixing chamber to stir the material in the mixing chamber; a shotcrete pump, the shotcrete pump comprises a pump shell and a conveying member, the pump shell is located below the discharge port, a shotcrete chamber is defined in the pump shell, the pump shell is provided with a shotcrete inlet and a shotcrete outlet connected with the shotcrete chamber, the shotcrete inlet is connected with the discharge port, the conveying member is rotatably arranged in the shotcrete chamber to convey the material in the shotcrete chamber from the shotcrete inlet to the shotcrete outlet; a first protective cover, the first protective cover is covered on the outside of the shell and the pump shell, the top of the first protective cover is open, the feed port is exposed on the outside of the first protective cover from the top open port of the first protective cover, and the top open port of the first protective cover is blocked by a wall panel of the shell provided with the feed port.

[0005] According to the embodiment of the present invention, the spraying machine is provided with a first protective cover, which covers the housing of the mixing assembly and the pump housing of the spraying pump, thereby preventing material dust from entering the external environment and polluting the external environment during the process of the material being discharged from the housing through the material outlet of the housing and entering the pump housing through the spraying inlet. Therefore, by providing the first protective cover, the dust generated by the spraying machine during operation can be better prevented from spreading into the air.

[0006] The spraying machine according to the embodiment of the utility model may also have the following additional technical features:

[0007] According to one embodiment of the utility model, the shotcrete machine further includes a material storage bin having a material storage inlet and a material storage outlet, the material storage inlet is connected to the material discharge port, the material storage outlet is connected to the shotcrete inlet, and the material storage bin is located in the first protective cover.

[0008] According to one embodiment of the utility model, the material storage bin is located below the material discharge port, the material storage bin comprises a bin bottom plate and a first bin side plate and a second bin side plate arranged on opposite sides of the bin bottom plate, the material discharge port is directly opposite to the bin bottom plate in the up and down directions, the top of the material storage bin is open, the top open opening of the material storage bin forms the material feed port, the material storage outlet is arranged on the bin bottom plate, and the bin bottom plate extends downwardly in a direction from the material discharge port toward the material storage outlet.

[0009] According to one embodiment of the utility model, the first protective cover includes a first side cover plate and a second side cover plate opposite to each other and parallel to the rotation axis of the mixing device, the first side cover plate includes a first sub-plate segment and a second sub-plate segment, the upper end edge of the first sub-plate segment constitutes a part of the edge of the top open mouth of the first protective cover, the upper end edge of the second sub-plate segment is connected to the lower end edge of the first sub-plate segment, wherein the first sub-plate segment extends outwardly obliquely from top to bottom, the second sub-plate segment extends vertically from top to bottom, and the second sub-plate segment is provided with an operating window, and the operating window is provided with a door body for opening and closing the operating window.

[0010] According to an embodiment of the utility model, the first side cover plate further includes an avoidance plate segment, the avoidance plate segment includes a third sub-plate segment, the third sub-plate segment is connected below the second sub-plate segment, and the third sub-plate segment extends inwardly in a direction from top to bottom.

[0011] According to one embodiment of the utility model, the avoidance plate segment also includes a fourth sub-plate segment and a fifth sub-plate segment, the fourth sub-plate segment is connected between the second sub-plate segment and the fifth sub-plate segment, and the fifth sub-plate segment is connected between the fourth sub-plate segment and the third sub-plate segment, wherein the fourth sub-plate segment extends inwardly obliquely from top to bottom, and the fifth sub-plate segment extends vertically from top to bottom.

[0012] According to an embodiment of the present utility model, a reinforcing rib is provided between the outer wall surface of the fourth sub-plate segment and the outer wall surface of the fifth sub-plate segment.

[0013] According to one embodiment of the utility model, the reinforcing rib plate includes a first reinforcing rib plate and a second reinforcing rib plate connected to each other, the angle between the first reinforcing rib plate and the second reinforcing rib plate is less than or equal to 90°, the end of the first reinforcing rib plate away from the second reinforcing rib plate is connected to the fourth sub-plate segment, and the end of the second reinforcing rib plate away from the first reinforcing rib plate is connected to the fifth sub-plate segment.

[0014] According to one embodiment of the utility model, the mixing assembly also includes a mixing drive device, which is connected to the mixing device to drive the mixing device to rotate, the spray pump also includes a spray drive device, which is connected to the conveying member to drive the conveying member to rotate, and the spray machine also includes a second protective cover, and the second protective cover is covered on the outside of the mixing drive device and the spray drive device.

[0015] According to an embodiment of the present invention, the second protective cover is provided with a cooling gas inlet and an air outlet.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a working scene of a shotcrete machine according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A partial structural schematic diagram of a shotcrete machine shown in ;

[0020] Figure 3 yes Figure 2 An exploded view of the structure shown in;

[0021] Figure 4 yes Figure 3 A further exploded view of the structure shown in;

[0022] Figure 5 yes Figure 4 An exploded view of a portion of the structure shown in ;

[0023] Figure 6 yes Figure 1 A perspective view of the first protective cover shown in ;

[0024] Figure 7 yes Figure 1 A front view of the first protective cover shown in ;

[0025] Figure 8 yes Figure 7 A cross-sectional view of the first protective cover along line AA shown in FIG.

[0026] Fig. 9 It is a structural schematic diagram of a spraying pump according to an embodiment of the utility model;

[0027] Fig.10 yes Fig. 9 Schematic diagram of the partial structure of the shotcrete pump shown in FIG.

[0028] Reference numerals:

[0029] Mixing assembly 100; housing 10; feed port 10a1; discharge port 10a2; cover plate 14; valve 15;

[0030] Mixing drive device 50; water adding device 60; second protective cover 70; air outlet 71; air outlet grille 711; cooling gas inlet 73; shotcrete machine 200; shotcrete pump 201; pump housing 2011; shotcrete inlet 20111; shotcrete outlet 20112; shotcrete drive device 2012; storage bin 2013; storage inlet 20131; storage outlet 20132; bin bottom plate 20133; first bin side plate 20134; second bin side plate 20135; vibrator 20136; first protective cover 202; first side cover Plate 2021; first sub-plate segment 20211; second sub-plate segment 20212; operating window 202121; door body 202122; third sub-plate segment 20213; fourth sub-plate segment 20214; fifth sub-plate segment 20215; reinforcing ribs 20216; first reinforcing rib plate 202161; second reinforcing rib plate 202162; second side cover plate 2022; frame 203; traction vehicle 204; vehicle body 2041; wheels 2042; nozzle 205; material conveying pipe 206; high-pressure gas conveying pipe 207. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] See also Figure 1-Figure 5 According to the embodiment of the present invention, the shotcrete machine 200 may include a traction vehicle 204, a frame 203, a mixing assembly 100 and a shotcrete pump 201. The shotcrete machine 200 of the embodiment of the present application may be a horizontal shotcrete machine or a vertical shotcrete machine.

[0033] The mixing assembly 100 and the spray pump 201 are both fixedly supported on the frame 203. The traction vehicle 204 includes a vehicle body 2041 and wheels 2042. The mixing assembly 100 and the spray pump 201 are both fixed on the vehicle body 2041. The wheels 2042 can be tracked or roller-type. The mixing assembly 100 includes a housing 10 and a mixing device. A mixing chamber is provided in the housing 10. The housing 10 is provided with a feed port 10a1 and a discharge port 10a2 connected to the mixing chamber. The mixing device is rotatably provided in the mixing chamber for stirring the material in the mixing chamber. The mixing device can be a stirring impeller or a spiral belt.

[0034] The material can be added into the mixing chamber through the feed port 10a1, and discharged through the discharge port 10a2 after being stirred by the mixing device. Optionally, a cover plate 14 for opening and closing the feed port 10a1 can be provided at the feed port 10a1, so that the cover plate 14 can be opened when adding materials, so that the feed port 10a1 is in an open state, and after the addition is completed, the cover plate 14 can be covered to close the feed port 10a1, thereby preventing dust from entering the air when the mixing device stirs the material.

[0035] The mixing assembly 100 also includes a mixing drive device 50 for driving the mixing device to rotate, and a water adding device 60 for adding water into the mixing chamber. Water is added into the mixing chamber by the water adding device 60, so that a uniformly stirred wet material can be formed in the mixing chamber. The mixing drive device 50 may include a mixing drive motor, the motor shaft of the mixing drive motor is connected to the rotating shaft of the mixing device, and is used to drive the mixing device to rotate. Optionally, the mixing drive device 50 may also include a gear transmission assembly, and the gear rotation assembly is connected between the motor shaft of the mixing drive motor and the rotating shaft of the mixing device for speed adjustment.

[0036] The spray pump 201 is located below the discharge port 10a2, and the spray pump 201 is configured to spray the material discharged from the discharge port 10a2 to a preset area. The spray pump 201 may include: a pump housing 2011, a conveying member, a spray driving device 2012, and a storage bin 2013. A spray chamber is defined in the pump housing 2011, and the pump housing 2011 is provided with a spray inlet 20111 and a spray outlet 20112 communicated with the spray chamber. The spray inlet 20111 is communicated with the discharge port 10a2, the conveying member is rotatably arranged in the spray chamber to convey the material in the spray chamber from the spray inlet 20111 toward the spray outlet 20112, and the spray driving device 2012 is connected to the conveying member to drive the conveying member to rotate.

[0037] The shotcrete machine 200 may further include a storage bin 2013, which is disposed between the housing 10 and the pump housing 2011. The storage bin 2013 has a storage inlet 20131 and a storage outlet 20132, wherein the storage inlet 20131 is communicated with the discharge port 10a2, and the storage outlet 20132 is communicated with the shotcrete inlet 20111. The storage bin 2013 is used to connect the discharge port 10a2 and the shotcrete inlet 20111. By providing the storage bin 2013, not only the connection between the discharge port 10a2 and the shotcrete inlet 20111 is made more flexible, but the storage bin 2013 can also temporarily store the mixed materials discharged from the discharge port 10a2. In this way, the work of mixing the materials in the mixing chamber and the work of conveying the materials in the pump housing 2011 can be carried out simultaneously, thereby realizing continuous construction work and greatly improving work efficiency.

[0038] The spraying drive device 2012 may include a spraying drive motor, the motor shaft of the spraying drive motor is connected to the rotating shaft of the conveying member, and is used to drive the conveying member to rotate. Optionally, the spraying drive device 2012 may also include a gear transmission assembly, which is connected between the rotating shaft of the conveying member and the motor shaft of the spraying drive motor for speed adjustment.

[0039] The spraying drive device 2012 is located below the mixing drive device 50. The mixing assembly 100 may also include a second protective cover 70. A second protective accommodating chamber is defined in the second protective cover 70. The spraying drive device 2012 and the mixing drive device 50 may be accommodated in the second protective cover 70. By providing the second protective cover 70, the spraying drive device 2012 and the mixing drive device 50 can be protected and injuries to the staff can be avoided.

[0040] The spraying machine 200 also includes a first protective cover 202, the outer cover of the first protective cover 202 is on the outside of the shell 10, the storage bin 2013 and the pump shell 2011, the top of the first protective cover 202 is open, the feed port 10a1 is exposed on the outside of the first protective cover 202 through the open top of the first protective cover 202, and the wall panel of the shell 10 provided with the feed port 10a1 blocks the open top of the first protective cover 202.

[0041] According to the shotcrete machine 200 of the embodiment of the utility model, by providing the first protective cover 202, the first protective cover 202 covers the housing 10, the storage bin 2013 and the pump housing 2011, so that the discharge port 10a2 and the shotcrete inlet 20111 are both located in the first protective cover 202, thereby preventing the material dust from entering the external environment and polluting the external environment during the process of the material being discharged from the housing 10 through the discharge port 10a2 of the housing 10 and entering the pump housing 2011 through the shotcrete inlet 20111. Therefore, by providing the first protective cover 202, the dust generated by the shotcrete machine 200 during operation can be better prevented from spreading into the air.

[0042] The spraying machine 200 may further include a nozzle 205, a material delivery pipe 206 and a high-pressure gas delivery pipe 207. The material delivery pipe 206 connects the nozzle 205 and the spraying outlet 20112, and is used to deliver the material at the spraying outlet 20112 toward the nozzle 205. One end of the high-pressure gas delivery pipe 207 is connected to the nozzle 205, and the other end of the high-pressure gas delivery pipe 207 is connected to a high-pressure gas source (such as an air compressor). The high-pressure gas delivery pipe 207 is used to deliver high-pressure gas toward the nozzle 205. During operation, the staff can hold the nozzle 205 to spray materials toward a preset area.

[0043] It should be noted that the "material" in the embodiments of the present application may be any feasible material. For example, the material may be fly ash, cement, concrete, etc.

[0044] In addition, the "preset area" may also be any feasible area. For example, the preset area may be the inner wall of a mine tunnel, the inner wall of a tunnel, a slope, etc.

[0045] In some other embodiments, the mixing component 100 may not include the above-mentioned water adding device 60. In this case, the mixing component 100 is used for mixing dry materials. The mixed materials can be mixed with water at the nozzle 205 to form wet materials for spraying.

[0046] In some other embodiments, the shotcrete machine 200 may not include the aforementioned tractor vehicle 204 .

[0047] In some other embodiments, the shotcrete machine 200 may not include the frame 203 mentioned above.

[0048] In some other embodiments, the shotcrete machine 200 may not include the second protective cover 70 mentioned above.

[0049] In some other embodiments, the shotcrete spraying machine 200 may not include the above-mentioned storage bin 2013, in which case the discharge port 10a2 and the shotcrete spraying inlet 20111 may be directly connected.

[0050] In some other embodiments, the spraying machine 200 may also be provided with a remote control mechanical arm at the nozzle 205, so that there is no need for direct manual operation of the nozzle 205, thereby reducing the labor intensity of the staff and ensuring the health of the staff.

[0051] In some embodiments of the present invention, the side wall of the second protective cover 70 has an open opening, and the open opening is blocked by the side wall of the first protective cover 202. Figure 1-Figure 4 The left side wall of the second protective cover 70 has an open opening, and the open opening is blocked by the right side wall of the first protective cover 202. This can make the structure of the second protective cover 70 simpler, save materials, and reduce production costs.

[0052] In some embodiments of this application, please refer to Figure 2-Figure 4 The second protective cover 70 is provided with an air outlet 71 and a cooling gas inlet 73 connected to the second protective accommodating chamber, and the cooling gas inlet 73 is suitable for connecting to a cooling gas source. By providing the cooling gas inlet 73, cooling gas can be introduced into the second protective cover 70 through the cooling gas inlet 73, so that the components in the second protective cover 70 (such as the mixing drive device 50 and the spraying drive device 2012, etc.) can be cooled down. The cooling gas absorbs the heat generated by the mixing drive device 50 and the spraying drive device 2012 during operation in the second protective cover 70, and then is discharged from the air outlet 71. The cooling gas can be selected arbitrarily as needed. Optionally, the cooling gas inlet 73 can be connected to an air compressor. Optionally, an air outlet grille 711 can be provided at the air outlet 71.

[0053] In some embodiments of this application, please refer to Figure 4-Figure 5 as well as Figure 9-10 The storage bin 2013 is located below the discharge port 10a2, and includes a bin bottom plate 20133 and a first bin side plate 20134 and a second bin side plate 20135 disposed on opposite sides of the bin bottom plate 20133. The discharge port 10a2 is directly opposite to the bin bottom plate 20133 in the vertical direction. The top of the storage bin 2013 is open, and the top opening of the storage bin 2013 forms a feed port 10a1. The storage port 20132 is disposed on the bin bottom plate 20133, and the bin bottom plate 20133 extends downwardly in a direction from the discharge port 10a2 toward the storage port 20132. In this way, it is convenient for the material to flow along the bin bottom plate 20133 toward the shotcrete inlet 20111.

[0054] In some embodiments of this application, please refer to Figure 4-Figure 5 The discharge port 10a2 is provided with a valve 15 for controlling the opening and closing of the discharge port 10a2, so that the opening and closing of the discharge port 10a2 can be controlled. The valve 15 can be a pneumatic valve, an electric valve or a manual valve.

[0055] In some embodiments of this application, please refer to Figure 4-Figure 5 as well as Figure 9-10 , a vibrator 20136 is provided on the bin bottom plate 20133, and the vibrator 20136 is located at one end of the bin bottom plate 20133 away from the storage outlet 20132. The vibrator 20136 can drive the bin bottom plate 20133 to vibrate, so that the material can flow more smoothly toward the shotcrete inlet 20111, and avoid the material from accumulating in the storage bin 2013. The vibrator 20136 can be a pneumatic air hammer. Optionally, the vibrator 20136 can include a plurality of vibrators arranged at intervals, so that the vibration effect is better.

[0056] In some embodiments of this application, please refer to Figure 1-4 as well as Figure 6-Figure 8 The first protective cover 202 includes a first side cover plate 2021 and a second side cover plate 2022 which are opposite to each other and parallel to the rotation axis of the mixing device, the first side cover plate 2021 includes a first sub-plate segment 20211 and a second sub-plate segment 20212, the upper end edge of the first sub-plate segment 20211 constitutes a part of the edge of the top open mouth of the first protective cover 202, the upper end edge of the second sub-plate segment 20212 is connected to the lower end edge of the first sub-plate segment 20211, wherein the first sub-plate segment 20211 extends outwardly obliquely from top to bottom, the second sub-plate segment 20212 extends vertically from top to bottom, and an operating window 202121 is provided on the second sub-plate segment 20212, and the operating window 202121 is provided with a door body 202122 for opening and closing the operating window 202121. The structures of the second side cover plate 2022 and the first side cover plate 2021 are symmetrical, and only the structure of the first side cover plate 2021 is described here, and the structure of the second side cover plate 2022 is not repeated.

[0057] It can be understood that in order to facilitate the maintenance of the shotcrete machine 200, an operation window 202121 is usually required to be opened on the first protective cover 202, so that maintenance personnel can inspect the components accommodated in the first protective cover 202 through the operation window 202121. For the convenience of operation, the cross-sectional area of ​​the second protective cover 70 corresponding to the second sub-plate segment 20212 needs to be designed to be larger, so as to leave more maintenance space for maintenance personnel to facilitate maintenance.

[0058] By extending the first sub-plate segment 20211 outwardly from top to bottom and the second sub-plate segment 20212 vertically from top to bottom, not only can sufficient maintenance space be ensured, but also the overall volume of the second protective cover 70 can be prevented from being too large.

[0059] For further information, see Figure 6-Figure 8The first side cover plate 2021 also includes a avoidance plate segment, which includes a third sub-plate segment 20213, which is connected to the bottom of the second sub-plate segment 20212, and the third sub-plate segment 20213 extends inwardly from top to bottom. Thus, the avoidance plate segment can avoid other components on the shotcrete machine 200. When the shotcrete machine 200 includes the above-mentioned traction vehicle 204, the avoidance plate segment can avoid structures such as the wheels 2042 of the traction vehicle 204, making the overall structure of the shotcrete machine 200 more compact. When the shotcrete machine 200 does not include the above-mentioned traction vehicle 204, the avoidance plate segment can also avoid the operator. When feeding toward the feed port 10a1, the operator can be closer to the feed port 10a1, which is convenient for feeding operation.

[0060] For further information, please refer to Figure 6-Figure 8 The avoidance plate segment also includes a fourth sub-plate segment 20214 and a fifth sub-plate segment 20215, wherein the fourth sub-plate segment 20214 is connected between the second sub-plate segment 20212 and the fifth sub-plate segment 20215, and the fifth sub-plate segment 20215 is connected between the fourth sub-plate segment 20214 and the third sub-plate segment 20213, wherein the fourth sub-plate segment 20214 extends inwardly from top to bottom, and the fifth sub-plate segment 20215 extends vertically from top to bottom. In this way, the fourth sub-plate segment 20214, the fifth sub-plate segment 20215 and the third sub-plate segment 20213 form a multi-section bending avoidance structure, so that the accommodation space in the first protective cover 202 corresponding to the avoidance plate segment can be guaranteed while performing the avoidance design, and at the same time, this multi-section bending structure can also enhance the structural strength of the first protective cover 202.

[0061] For further information, please refer to Figure 6-Figure 8 A reinforcing rib 20216 is provided between the outer wall surface of the fourth sub-segment 20214 and the outer wall surface of the fifth sub-segment 20215. The reinforcing rib 20216 supports the fourth sub-segment 20214 and the fifth sub-segment 20215, so that the fourth sub-segment 20214 and the fifth sub-segment 20215 are not easily bent or broken.

[0062] For further information, please refer to Figure 6-Figure 8The reinforcing rib plate 20216 includes a first reinforcing rib plate 202161 and a second reinforcing rib plate 202162 connected to each other, the angle between the first reinforcing rib plate 202161 and the second reinforcing rib plate 202162 is less than or equal to 90°, the end of the first reinforcing rib plate 202161 away from the second reinforcing rib plate 202162 is connected to the fourth sub-plate segment 20214, and the end of the second reinforcing rib plate 202162 away from the first reinforcing rib plate 202161 is connected to the fifth sub-plate segment 20215. By making the angle between the first reinforcing rib plate 202161 and the second reinforcing rib plate 202162 less than or equal to 90°, the reinforcing rib plate 20216 has a better supporting effect on the fourth sub-plate segment 20214 and the fifth sub-plate segment 20215.

[0063] In some embodiments of the present application, reinforcing ribs 20216 are also arranged between the inner wall surface of the fifth sub-plate segment 20215 and the inner wall surface of the third sub-plate segment 20213 to support the fifth sub-plate segment 20215 and the third sub-plate segment 20213, so that bending or breaking is not likely to occur between the fifth sub-plate segment 20215 and the third sub-plate segment 20213.

[0064] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0065] In the description of the present utility model, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shotcrete machine, characterized in that: include: A mixing assembly, the mixing assembly comprising a shell and a mixing device, the shell is provided with a mixing chamber, the shell is provided with a feed inlet and a discharge inlet communicated with the mixing chamber, and the mixing device is rotatably arranged in the mixing chamber to stir the material in the mixing chamber; A spray pump, the spray pump comprising a pump housing and a conveying member, the pump housing being located below the discharge port, a spray chamber being defined in the pump housing, the pump housing being provided with a spray inlet and a spray outlet communicating with the spray chamber, the spray inlet being communicated with the discharge port, the conveying member being rotatably disposed in the spray chamber to convey the material in the spray chamber from the spray inlet toward the spray outlet; A first protective cover, wherein the first protective cover is externally covered on the shell and the pump shell, the top of the first protective cover is open, the feed port is exposed on the outside of the first protective cover through the open top of the first protective cover, and the wall panel of the shell provided with the feed port blocks the open top of the first protective cover.

2. The shotcrete machine according to claim 1, characterized in that: It also includes a material storage bin having a material storage inlet and a material storage outlet, the material storage inlet is connected to the material discharge port, the material storage outlet is connected to the shotcrete inlet, and the material storage bin is located in the first protective cover.

3. The shotcrete machine according to claim 2, characterized in that: The material storage bin is located below the discharge port, and includes a bin bottom plate and a first bin side plate and a second bin side plate disposed on opposite sides of the bin bottom plate. The discharge port is directly opposite to the bin bottom plate in the up and down directions, the top of the material storage bin is open, and the top open opening of the material storage bin forms the feed port, the material storage outlet is disposed on the bin bottom plate, and the bin bottom plate extends downwardly at an angle from the discharge port toward the material storage outlet.

4. The shotcrete machine according to claim 1, characterized in that: The first protective cover comprises a first side cover plate and a second side cover plate which are opposite to each other and parallel to the rotation axis of the mixing device, the first side cover plate comprises a first sub-plate segment and a second sub-plate segment, the upper end edge of the first sub-plate segment constitutes a part of the edge of the top opening of the first protective cover, and the upper end edge of the second sub-plate segment is connected to the lower end edge of the first sub-plate segment, The first sub-plate segment extends outwardly in an oblique direction from top to bottom, the second sub-plate segment extends vertically in an upper-lower direction, an operating window is provided on the second sub-plate segment, and the operating window is provided with a door body for opening and closing the operating window.

5. The spraying machine according to claim 4, characterized in that: The first side cover plate further includes a avoidance plate segment, the avoidance plate segment includes a third sub-plate segment, the third sub-plate segment is connected below the second sub-plate segment, and the third sub-plate segment extends inwardly in a direction from top to bottom.

6. The shotcrete machine according to claim 5, characterized in that: The avoidance plate segment further includes a fourth sub-plate segment and a fifth sub-plate segment, wherein the fourth sub-plate segment is connected between the second sub-plate segment and the fifth sub-plate segment, and the fifth sub-plate segment is connected between the fourth sub-plate segment and the third sub-plate segment. The fourth sub-plate segment extends inwardly and obliquely from top to bottom, and the fifth sub-plate segment extends vertically from top to bottom.

7. The spraying machine according to claim 6, characterized in that: A reinforcing rib is provided between the outer wall surface of the fourth sub-plate segment and the outer wall surface of the fifth sub-plate segment.

8. The spraying machine according to claim 7, characterized in that: The reinforcing rib plate includes a first reinforcing rib plate and a second reinforcing rib plate connected to each other, the angle between the first reinforcing rib plate and the second reinforcing rib plate is less than or equal to 90°, the end of the first reinforcing rib plate away from the second reinforcing rib plate is connected to the fourth sub-plate segment, and the end of the second reinforcing rib plate away from the first reinforcing rib plate is connected to the fifth sub-plate segment.

9. The shotcrete machine according to claim 1, characterized in that: The mixing assembly also includes a mixing drive device, which is connected to the mixing device to drive the mixing device to rotate. The spray pump also includes a spray drive device, which is connected to the conveying member to drive the conveying member to rotate. The spray machine also includes a second protective cover, which is externally covered on the outside of the mixing drive device and the spray drive device.

10. The shotcrete machine according to claim 9, characterized in that: The second protective cover is provided with a cooling gas inlet and an air outlet.

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