Movable spraying and mixing material automatic feeding device applied to extra-small section tunnel

Abstract

The utility model discloses a movable spraying and mixing material automatic feeding device applied to an extra-small section tunnel, and belongs to the construction field of water conservancy projects and reservoir bottom drainage projects. Comprising a U-shaped spiral conveyor, a feeding bin, a wheel type moving device, a feeding port, a discharging port, a driving motor, a transmission belt, a power source control box, a main support and an auxiliary support. The feeding port is formed in the middle of the bottom of the feeding bin. The auxiliary support is arranged at the bottom of the feeding bin. The feeding bin is composed of a first inclined panel, a second inclined panel, a third inclined panel and a fourth inclined panel which are inclined downwards to the middle part; the first inclined panel is welded with the edges of the third inclined panel and the fourth inclined panel, and the second inclined panel is welded with the edges of the third inclined panel and the fourth inclined panel. The device has the beneficial effects that the feeding speed of spraying and mixing materials in a hole can be increased, the requirement for spraying and mixing construction strength is met, the construction efficiency is improved, and a good effect is achieved in reservoir civil engineering and metal structure installation engineering implementation under a black-sea pumped storage power station.

Description

Technical Field

[0001] The utility model relates to a movable automatic feeding device for spraying and mixing materials applicable to extra-small cross-section tunnels, belonging to the construction fields of water conservancy projects and reservoir bottom drainage projects. Background Art

[0002] We are facing a severe challenge: there are a large number of extra-small cross-section tunnels with spans less than 3 meters, which makes it impossible for conventional construction machinery to smoothly enter the tunnels for operation. At present, the feeding work of shotcrete in the tunnels mainly relies on the method of manual cooperation with wheelbarrows. This method is not only extremely difficult to operate, but also extremely time-consuming and laborious. More importantly, such feeding efficiency far fails to meet the high standards of the feeding rate of shotcrete for shotcrete construction. This not only directly affects the quality and efficiency of shotcrete construction in the tunnels, but also seriously restricts the construction progress of the entire tunnel excavation and support project. Content of the Utility Model

[0003] In order to solve the deficiencies of the prior art, reduce the manual labor intensity, improve the spraying and mixing construction efficiency, and meet the needs of the construction period, an automatic feeding device for spraying and mixing materials that is movable in extra-small cross-section tunnels is adopted.

[0004] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] It includes a U-shaped screw conveyor, a feeding bin, a wheeled mobile device, a feeding port, a discharging port, a driving motor, a transmission belt, a power control box, a main support, and a sub-support; the feeding port is arranged at the middle position of the bottom of the feeding bin, and the sub-support is arranged at the bottom of the feeding bin.

[0006] The feeding bin is composed of a first inclined panel, a second inclined panel, a third inclined panel, and a fourth inclined panel that are inclined downward to the middle position; the first inclined panel is welded to the edges of the third inclined panel and the fourth inclined panel, and the second inclined panel is welded to the edges of the third inclined panel and the fourth inclined panel;

[0007] The U-shaped screw conveyor includes a screw rod, a protective shell, and a U-shaped outer shell. The discharging port is arranged at the bent part of the bottom of the U-shaped outer shell; the upper edges of the two vertical plates of the U-shaped outer shell are respectively welded to the edges of the third inclined panel and the fourth inclined panel;

[0008] The protective shell is integrally formed with the U-shaped outer shell and is located at the end of the U-shaped outer shell. The protective shell is cylindrical;

[0009] A first through hole is arranged on the first inclined panel, and a second through hole is arranged on the second inclined panel; the edge of the protective shell is welded at the second through hole.

[0010] Further: a first protective plate is welded to the upper end of the first inclined panel, a second protective plate is welded to the upper end of the second inclined panel, a third protective plate is welded to the upper end of the third inclined panel, and a fourth protective plate is welded to the upper end of the fourth inclined panel; the first protective plate is vertically arranged; the fourth protective plate is inclined, and the inclination angle is smaller than that of the fourth inclined panel; the third protective plate is inclined, and the inclination angle is smaller than that of the third inclined panel, and the second protective plate has the same inclination angle as the second inclined panel.

[0011] Further: the width of the second protective plate is greater than that of the first protective plate, and a rectangular groove is provided through the middle of the second protective plate.

[0012] Further: the auxiliary support is composed of a first bending strip, two second bending strips, two first strengthening strips, and two second strengthening strips; the first bending strip consists of a horizontal strip and straight strips arranged on both sides of the horizontal strip, and an included angle is provided between the straight strip and the horizontal strip; the first bending strip is welded to the second inclined panel; the middle part of the second bending strip is bent, and the bending angle is less than 90 degrees, and both ends of the second bending strip are welded to the straight strip; one end of the first strengthening strip is welded to the second inclined panel and the other end is welded to the bent part in the middle of the second bending strip; the second strengthening strip is integrally welded to the second inclined panel, and the end of the second strengthening strip is welded to the horizontal strip, and the second strengthening strips are symmetrically arranged on both sides of the second through hole.

[0013] Further: the wheeled mobile device consists of two inch wheels, bearings and a cross beam, and is installed in the middle and rear part of the U-shaped screw conveyor.

[0014] Further: the driving motor is installed at the front top of the U-shaped screw conveyor to provide power for the U-shaped screw conveyor.

[0015] Further: the transmission belt is connected to the output end of the driving motor and the output end of the U-shaped screw conveyor.

[0016] Further: the main support is welded to both sides of the U-shaped screw conveyor and is located in the middle of the U-shaped screw conveyor.

[0017] Further: the power control box is welded to one side of the U-shaped screw conveyor.

[0018] The beneficial effects are as follows:

[0019] This device can accelerate the feeding speed of the shotcrete mixture in the tunnel, meet the requirements of the shotcrete construction intensity, improve the construction efficiency, and has achieved very good results in the implementation of the civil engineering and metal structure installation project of the lower reservoir of the Wuhai Pumped Storage Power Station. Description of the Drawings

[0020] For ease of explanation, the present utility model will be described in detail by the following specific embodiments and accompanying drawings.

[0021] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0022] Figure 2 It is a top view structural schematic diagram of the present utility model;

[0023] Figure 3 It is a right view structural schematic diagram of the present utility model;

[0024] Figure 4 It is a left view structural schematic diagram of the present utility model;

[0025] Figure 5 It is a part drawing of the feed bin of the present utility model;

[0026] Figure 6 It is a combined part drawing of the feed bin and the U-shaped screw conveyor of the present utility model.

[0027] Explanation of reference numerals:

[0028] 1. U-shaped screw conveyor; 11. Screw; 12. Protection shell; 13. U-shaped outer shell; 2. Feed bin; 21. First inclined panel; 211. First through hole; 22. Second inclined panel; 221. Second through hole; 23. Third inclined panel; 24. Fourth inclined panel; 25. First protection plate; 26. Second protection plate; 261. Rectangular groove; 27. Third protection plate; 28. Fourth protection plate; 3. Wheel-type mobile device; 4. Feed inlet; 5. Discharge outlet; 6. Driving motor; 7. Transmission belt; 8. Power control box; 9. Main support; 10. Sub support; 101. First bending strip; 1011. Horizontal strip; 1012. Vertical strip; 102. Second bending strip; 103. First strengthening strip; 104. Second strengthening strip. Specific embodiments

[0029] The following details the embodiments of the present utility model, and the examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0030] It should be noted that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0031] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] Meanwhile, in the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected" and "connected to" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Refer to Figures 1-6 This is an embodiment of an automatically feeding device for movable spraying and mixing materials applied to a tunnel with an extremely small cross-section in the present utility model.

[0034] It includes a U-shaped screw conveyor 1, a feeding bin 2, a wheeled mobile device 3, a feeding port 4, a discharging port 5, a driving motor 6, a transmission belt 7, a power control box 8, a main support 9, and a sub-support 10; the feeding port 4 is arranged at the middle position of the bottom of the feeding bin 2, and the sub-support 10 is arranged at the bottom of the feeding bin 2.

[0035] Before the device works, dry mixed materials are first put into the feeding bin 2. After entering the construction site, the dry mixed materials in the feeding bin 2 enter the U-shaped screw conveyor 1 through the feeding port at the bottom, and then are sent to the discharging port 5 by the U-shaped screw conveyor 1. The discharging port 5 should be placed above the feeding port of the concrete spraying machine, and the concrete spraying machine mixes and sprays the mixed materials for construction.

[0036] The structure of the present invention is simple and convenient to process, ensuring the uniformity and continuity of the feeding of the spraying and mixing materials. The whole manufacturing and construction process is simple, highly operable, economical, and can ensure the construction progress.

[0037] Meanwhile, in order to facilitate the entry of the concrete materials into the U-shaped screw conveyor 1 for feeding, the structure of the feeding bin 2 of this device is improved.

[0038] The feed bin 2 is composed of a first inclined panel 21, a second inclined panel 22, a third inclined panel 23, and a fourth inclined panel 24 that are inclined obliquely downward towards the middle part; the first inclined panel 21 is welded to the edges of the third inclined panel 23 and the fourth inclined panel 24, and the second inclined panel 22 is welded to the edges of the third inclined panel 23 and the fourth inclined panel 24;

[0039] With such a setting, the entire feed bin 2 forms an open hopper, and the center of the hopper is the feed inlet 4, and the feed inlet 4 is formed by enclosing the first inclined panel 21, the second inclined panel 22, the third inclined panel 23, and the fourth inclined panel 24;

[0040] At the same time, the U-shaped screw conveyor 1 includes a screw 11, a protective shell 12, and a U-shaped outer shell 13; the discharge port 5 is arranged at the bent part of the bottom of the U-shaped outer shell 13; the upper edges of the two vertical plates of the U-shaped outer shell 13 are respectively welded to the edges of the third inclined panel 23 and the fourth inclined panel 24; in this way, the materials entering the feed bin 2 will slide along the inner wall towards the feed inlet 4, then directly enter the U-shaped screw conveyor 1 from the feed inlet 4, and finally be conveyed by the U-shaped screw conveyor 1 and output from the discharge port 5.

[0041] The protective shell 12 is integrally formed with the U-shaped outer shell 13 and is located at the end of the U-shaped outer shell 13, and the protective shell 12 is cylindrical;

[0042] In this device, the protective shell 12 is for facilitating the installation of the screw 11;

[0043] A first through hole 211 is arranged on the first inclined panel 21, and a second through hole 221 is arranged on the second inclined panel 22; the edge of the protective shell 12 is welded at the second through hole 221.

[0044] The edge of the protective shell 12 is welded at the second through hole 221 to prevent material overflow.

[0045] A first protective plate 25 is welded to the upper end of the first inclined panel 21, a second protective plate 26 is welded to the upper end of the second inclined panel 22, a third protective plate 27 is welded to the upper end of the third inclined panel 23, and a fourth protective plate 28 is welded to the upper end of the fourth inclined panel 24; the first protective plate 25 is vertically arranged; the fourth protective plate 28 is obliquely arranged, and the inclination angle is smaller than the inclination angle of the fourth inclined panel 24; the third protective plate 27 is obliquely arranged, and the inclination angle is smaller than the inclination angle of the third inclined panel 23, and the second protective plate 26 has the same inclination angle as the second inclined panel 22.

[0046] In this device, the settings of the first protective plate 25, the second protective plate 26, the third protective plate 27, and the fourth protective plate 28 are to increase the storage area of the feed bin 2, and at the same time, the inclination angles of the first protective plate 25, the second protective plate 26, the third protective plate 27, and the fourth protective plate 28 with respect to the vertical plane are to facilitate the addition of materials into the feed bin 2.

[0047] The width of the second protective plate 26 is greater than that of the first protective plate 25, and a rectangular groove 261 is provided through the middle of the second protective plate 26. When the feeding bin 2 in this device is in use, it is inclined as a whole, and the inclination direction is along the direction of the second inclined panel 22. In this way, the entire U-shaped screw conveyor 1 is also inclined, which is convenient for transporting materials from the bottom upwards; and the upper end surface of the second protective plate 26 is flush with the upper end surface of the first protective plate 25 at this time.

[0048] Since the entire feeding bin 2 is inclined, it is necessary to support the feeding bin 2. In this device, the main support 9 and the auxiliary support 10 work together. The main support 9 is welded on both sides of the U-shaped screw conveyor 1 and is located in the middle of the U-shaped screw conveyor 1, aiming to raise the output end of the U-shaped screw conveyor 1, while the auxiliary support 10 is for supporting the feeding bin 2;

[0049] Specific structure: The auxiliary support 10 includes a first bent strip 101, two second bent strips 102, two first reinforcing strips 103, and two second reinforcing strips 104; the first bent strip 101 consists of a cross bar 1011 and straight bars 1012 provided on both sides of the cross bar 1011, and an included angle is provided between the straight bar 1012 and the cross bar 1011; the first bent strip 101 is welded on the second inclined panel 22; the middle part of the second bent strip 102 is bent, and the angle after bending is less than ninety degrees, and both ends of the second bent strip 102 are welded on the straight bar 1012; one end of the first reinforcing strip 103 is welded on the second inclined panel 22 and the other end is welded on the bent part in the middle of the second bent strip 102; the second reinforcing strip 104 is integrally welded on the second inclined panel 22, and the end of the second reinforcing strip 104 is welded on the cross bar 1011, and the second reinforcing strip 104 is symmetrically arranged on both sides of the second through hole 221.

[0050] In this device, the main support is mainly provided by the second bent strip 102. When the feeding bin 2 is inclined, the second bent strip 102 will provide a supporting force for the feeding bin 2. At the same time, in order to support the feeding bin 2 more stably, the first bent strip 101 is provided. The main function of the first bent strip 101 is to support the second inclined panel 22 of the feeding bin 2, because when the feeding bin 2 is inclined, the main stressed part is the second inclined panel 22. In order to improve the stability of the first bent strip 101 in supporting the second inclined panel 22, the first bent strip 101 is set to consist of a cross bar 1011 and straight bars 1012 provided on both sides of the cross bar 1011. Both the cross bar 1011 and the straight bar 1012 have a supporting effect on the second inclined panel 22, and at the same time, the straight bar 1012 is welded to the second bent strip 102;

[0051] In this device, the first reinforcing strip 103 is mainly to improve the supporting force of the second bent strip 102, and the second reinforcing strip 104 is mainly to improve the supporting force of the first bent strip 101.

[0052] Meanwhile, the protective case 12 in this device is welded to the horizontal bar 1011 on the first bending bar 101.

[0053] The wheeled mobile device 3 is composed of two 20-inch wheels, bearings and a cross beam, and is installed in the middle and rear part of the U-shaped screw conveyor 1 to provide it with a mobile function.

[0054] The driving motor 6 is installed at the front top of the U-shaped screw conveyor 1 to provide power for the U-shaped screw conveyor 1.

[0055] The transmission belt 7 is connected to the output end of the driving motor 6 and the output end of the U-shaped screw conveyor 1, and is used to connect the motor and the U-shaped screw conveyor. The U-shaped screw conveyor is driven by the motor to rotate, and then the spraying and mixing material is conveyed from the feeding port to the discharging port.

[0056] Furthermore, the power control box 8 is welded to one side of the U-shaped screw conveyor 1 and is used to connect the power supply and install the power controller for the control of the motor.

[0057] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. A movable automatic spray-mixing feeding device for a tunnel with an extremely small cross section, characterized in that: The invention comprises a U-shaped screw conveyor (1), a feed bin (2), a wheeled moving device (3), a feed port (4), a discharge port (5), a driving motor (6), a transmission belt (7), a power control box (8), a main bracket (9), and a secondary bracket (10); the feed port (4) is arranged at the middle part of the bottom of the feed bin (2), and the secondary bracket (10) is arranged at the bottom of the feed bin (2); the feed bin (2) is composed of a first inclined panel (21), a second inclined panel (22), a third inclined panel (23), and a fourth inclined panel (24) which are inclined downward toward the middle part; the first inclined panel (21) is welded to the edges of the third inclined panel (23) and the fourth inclined panel (24), and the second inclined panel (22) is welded to the edges of the third inclined panel (23) and the fourth inclined panel (24); The U-shaped screw conveyor (1) comprises a screw (11), a protective shell (12) and a U-shaped shell (13); the discharge port (5) is arranged at the bottom bending portion of the U-shaped shell (13); the upper edges of the two vertical plates of the U-shaped shell (13) are respectively welded to the edges of the third inclined plate (23) and the fourth inclined plate (24); the protective shell (12) and the U-shaped shell (13) are integrally formed and located at the end of the U-shaped shell (13); the protective shell (12) is cylindrical; the first inclined plate (21) is provided with a first through hole (211), and the second inclined plate (22) is provided with a second through hole (221); the edge of the protective shell (12) is welded to the second through hole (221).

2. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 1 is characterized in that: A first protective plate (25) is welded to the upper end of the first inclined panel (21), a second protective plate (26) is welded to the upper end of the second inclined panel (22), a third protective plate (27) is welded to the upper end of the third inclined panel (23), and a fourth protective plate (28) is welded to the upper end of the fourth inclined panel (24); the first protective plate (25) is vertically arranged; the fourth protective plate (28) is inclinedly arranged, and the inclination angle is smaller than the inclination angle of the fourth inclined panel (24); the third protective plate (27) is inclinedly arranged, and the inclination angle is smaller than the inclination angle of the third inclined panel (23); the second protective plate (26) and the second inclined panel (22) have the same inclination angle.

3. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 2 is characterized in that: The width of the second protective plate (26) is greater than that of the first protective plate (25), and a rectangular groove (261) is provided through the middle of the second protective plate (26).

4. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 3 is characterized in that: The secondary support (10) comprises a first bending strip (101), two second bending strips (102), two first reinforcement strips (103), and two second reinforcement strips (104); the first bending strip (101) comprises a horizontal strip (1011) and straight strips (1012) arranged on both sides of the horizontal strip (1011), and an angle is arranged between the straight strips (1012) and the horizontal strip (1011); the first bending strip (101) is welded to the second inclined panel (22); the second bending strip (102) is bent at the middle part, and The angle after bending is less than ninety degrees, and both ends of the second bending strip (102) are welded to the straight strip (1012); one end of the first reinforcing strip (103) is welded to the second inclined panel (22), and the other end is welded to the bent portion in the middle of the second bending strip (102); the second reinforcing strip (104) is welded as a whole to the second inclined panel (22), and the end of the second reinforcing strip (104) is welded to the horizontal strip (1011), and the second reinforcing strip (104) is symmetrically arranged on both sides of the second through hole (221).

5. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 4 is characterized in that: The wheeled mobile device (3) is composed of two (20) inch wheels, bearings and a crossbeam, and is installed at the middle and rear part of the U-shaped screw conveyor (1).

6. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 1 is characterized in that: The driving motor (6) is mounted on the front end top of the U-shaped screw conveyor (1) and is used to provide power to the U-shaped screw conveyor (1).

7. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 1 is characterized in that: The transmission belt (7) is connected to the output end of the drive motor (6) and the output end of the U-shaped screw conveyor (1).

8. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 1 is characterized in that: The main support (9) is welded on both sides of the U-shaped screw conveyor (1) and is located in the middle of the U-shaped screw conveyor (1).

9. The movable automatic spray-mixing feeding device for ultra-small cross-section tunnels according to claim 1 is characterized in that: The power control box (8) is welded to one side of the U-shaped screw conveyor (1).

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