A shield grouting liquid discharge hopper

Abstract

This utility model relates to the field of hopper technology, specifically disclosing a shield tunnel grouting fluid hopper, including a hopper device, and further comprising: a heating plate, a stirring paddle, and a scraper; the heating plate is installed outside the hopper device for heating the hopper device; the stirring paddle is located inside the hopper device for stirring the grouting fluid inside the hopper device; several sets of scrapers are provided, and one side of the scraper is in contact with the inner wall of the hopper device, the scraper scrapes off the grouting fluid adhering to the inner wall of the hopper device, and the stirring paddle and scraper operate independently; this device avoids the problem of continuous friction between the scraper and the inner wall of the hopper in traditional integrated structures, the scraper only rotates and contacts the inner wall when it is necessary to remove the grouting fluid adhering to the inner wall, greatly reducing the number of times the scraper and the inner wall of the hopper rub against each other, and the service life of the inner wall of the hopper and the scraper is extended due to the reduced wear.

Description

Technical Field

[0001] This utility model relates to the field of material discharge hopper technology, specifically a material discharge hopper for shield tunnel grouting fluid. Background Technology

[0002] Shield tunnel wall grouting is mainly used after the shield tunnel segments are assembled. There is a small gap between the outside of the segments and the soil. Grouting can fill the gap and prevent settlement of the segments and soil. Water leakage on the surface of the lining is a major defect of the tunnel. Poor self-waterproofing of the lining structure will affect the service quality and life of the tunnel. During grouting, the grouting fluid needs to be stored in a hopper and then injected by a grouting machine.

[0003] When grout is stored in the discharge hopper for a long time, it is prone to stratification and sedimentation due to its own physical properties. Usually, a stirring device is set up to stir the grout to maintain its uniformity. During the discharge process, it is easy to stick to the inner wall of the discharge hopper. In order to remove the grout adhering to the inner wall, the existing technology uses a scraper structure. The grout adhering to the inner wall is scraped off by the relative movement of the scraper and the inner wall of the discharge hopper.

[0004] Currently, most common scrapers and mixing paddles are integrated structures. Continuous friction between the scraper and the inner wall of the discharge hopper accelerates the wear of both. After the inner wall of the discharge hopper wears down, its surface roughness increases, which further aggravates the adhesion of grout, creating a vicious cycle. At the same time, after the scraper wears down, its adhesion to the inner wall decreases, resulting in a poorer scraping effect and an inability to effectively remove the adhered grout. Frequent wear also shortens the service life of the equipment and increases the maintenance cost and replacement frequency. Therefore, we propose a shield tunneling grout discharge hopper. Utility Model Content

[0005] The purpose of this utility model is to provide a shield tunnel grouting fluid discharge hopper to solve the problems mentioned in the background art. Currently, most common scrapers and mixing blades are integrated structures. The continuous friction between the scraper and the inner wall of the discharge hopper accelerates the wear of both the scraper and the inner wall of the discharge hopper. After the inner wall of the discharge hopper is worn, its surface roughness increases, which further aggravates the adhesion problem of the grouting fluid, forming a vicious cycle. At the same time, after the scraper is worn, its adhesion to the inner wall decreases, the scraping effect becomes worse, and it is impossible to effectively remove the adhered grouting fluid. Frequent wear will also shorten the service life of the equipment and increase the maintenance cost and replacement frequency of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shield tunnel grouting fluid discharge hopper, including a discharge hopper device, and further including: a heating plate, a stirring paddle, and a scraper;

[0007] The heating plate is installed on the outside of the hopper device to heat the hopper device;

[0008] The mixing paddle is located inside the discharge hopper device and is used to mix the grouting liquid inside the discharge hopper device;

[0009] Several sets of scrapers are provided, and one side of the scraper is in contact with the inner wall of the discharge hopper device. The scraper scrapes off the grouting liquid adhering to the inner wall of the discharge hopper device. The mixing paddle and the scraper operate independently.

[0010] The heating plate is equipped with a heat insulation pad, the heat insulation pad is equipped with a control device, and the top of the hopper device is equipped with a top plate.

[0011] The top plate is movably connected to the agitator via bearings. A gear is installed on the top of the agitator, and a rotating frame is connected to the outside of the agitator.

[0012] The rotating frame has an internal gear installed on its top, and its bottom is connected to several sets of scrapers. The top plate has a connecting groove.

[0013] The connecting groove has a sliding connection to a connecting seat made of iron. A mounting bracket is installed on the top of the connecting seat, and a motor is installed on one side of the mounting bracket.

[0014] The motor's drive end is connected to a drive gear, and electromagnet one and electromagnet two are respectively installed on both sides of the inside of the connecting groove. A connecting shaft is connected inside the top plate.

[0015] Gear 2 and gear 3 are installed at the top and bottom of the connecting shaft, respectively.

[0016] This utility model has at least the following beneficial effects:

[0017] In use, when the ambient temperature is low or the grout needs to maintain a specific temperature, the heating plate is turned on. The heat-conducting material of the hopper device heats the grout through heat conduction, ensuring it is at a suitable working temperature. The stirring paddle and scraper operate independently, avoiding the problem of continuous friction between the scraper and the inner wall of the hopper in traditional integrated structures. The scraper only rotates and contacts the inner wall when it is necessary to remove grout adhering to it, greatly reducing the number of frictions between the scraper and the inner wall of the hopper. Due to reduced wear, the service life of the inner wall of the hopper and the scraper is extended. Reduced wear on the inner wall of the hopper keeps its surface roughness at a low level, effectively reducing the adhesion of grout to the inner wall. Reduced scraper wear allows for better contact with the inner wall of the hopper over a longer period, enabling more effective removal of grout when needed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an internal structural diagram of the present invention;

[0020] Figure 3 For practical purposes Figure 2 Enlarged view of A in the middle;

[0021] Figure 4 This is a semi-exploded view of the structure of this utility model.

[0022] In the diagram: 1. Feeding hopper device; 2. Heating plate; 3. Heat insulation pad; 4. Control device; 5. Top plate; 6. Agitator; 7. Gear 1; 8. Rotating frame; 9. Internal gear; 10. Scraper; 11. Connecting groove; 12. Connecting seat; 13. Mounting frame; 14. Motor; 15. Drive gear; 16. Electromagnet 1; 17. Electromagnet 2; 18. Connecting shaft; 19. Gear 2; 20. Gear 3. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1 to 4 The present invention provides a technical solution: a shield tunnel grouting fluid discharge hopper, including a discharge hopper device 1, and further including a heating plate 2, a stirring paddle 6 and a scraper 10;

[0026] The heating plate 2 is installed on the outside of the hopper device 1 and is used to heat the hopper device 1.

[0027] The stirring paddle 6 is located inside the discharge hopper device 1 and is used to stir the grout in the discharge hopper device 1.

[0028] Several sets of scrapers 10 are provided, and one side of the scraper 10 is in contact with the inner wall of the discharge hopper device 1. The scraper 10 scrapes off the grouting liquid adhering to the inner wall of the discharge hopper device 1. The mixing paddle 6 and the scraper 10 operate independently.

[0029] A heat insulation pad 3 is installed on the outside of the heating plate 2, and a control device 4 is installed on the outside of the heat insulation pad 3. A top plate 5 is provided on the top of the hopper device 1. The inside of the top plate 5 is movably connected to the stirring paddle 6 through a bearing. A gear 7 is installed on the top of the stirring paddle 6. A rotating frame 8 is connected to the outside of the stirring paddle 6. An internal gear 9 is installed on the top of the rotating frame 8. The bottom of the rotating frame 8 is connected to several sets of scrapers 10. A connecting groove 11 is opened on the top of the top plate 5. A connecting seat 12 is slidably connected inside the connecting groove 11. The connecting seat 12 is made of iron. A mounting frame 13 is installed on the top of the connecting seat 12. A motor 14 is installed on one side of the mounting frame 13. A drive gear 15 is connected to the power drive end of the motor 14. Electromagnets 16 and 17 are respectively provided on both sides inside the connecting groove 11. A connecting shaft 18 is connected inside the top plate 5. Gears 19 and 20 are respectively installed on the top and bottom of the connecting shaft 18.

[0030] Electromagnet 16 approaches gear 2 19, and electromagnet 2 17 approaches gear 1 7. When the driving gear 15 meshes with gear 1 7, it drives the stirring paddle 6 to rotate. When the driving gear 15 meshes with gear 2 19, it drives gear 3 20 to rotate through the connecting shaft 18, thereby driving the inner gear 9 to rotate. The rotating frame 8 installed at the bottom of the inner gear 9 is located outside the stirring paddle 6 and rotates, driving the scraper 10 to rotate. The scraper 10 and the stirring paddle 6 operate separately. When the rotating frame 8 rotates, the stirring paddle 6 does not rotate.

[0031] During the storage of the grouting fluid, in order to prevent stratification and sedimentation, the stirring function is activated. Electromagnet 2 17 is energized to generate magnetic force, which attracts the iron connecting seat 12 to move towards the electromagnet 2 17. Since the connecting seat 12 is connected to the mounting frame 13, and the mounting frame 13 is equipped with a motor 14, the motor 14 and the drive gear 15 will move, so that the drive gear 15 meshes with the teeth of gear 1 7. The motor 14 starts, and its power drive end drives the drive gear 15 to rotate. The drive gear 15 transmits power to gear 1 7, so it drives the stirring paddle 6 to rotate, thereby stirring the grouting fluid in the discharge hopper device 1 and preventing the grouting fluid from stratifying and sedimenting.

[0032] When it is necessary to remove the grouting liquid adhering to the inner wall of the hopper device 1, the scraper 10 function is activated, the electromagnet 2 17 is de-energized, the agitator 6 stops rotating, the electromagnet 1 16 is energized to generate magnetic force, attracting the iron connecting seat 12 to move towards the electromagnet 1 16, driving the motor 14 and the drive gear 15 to move, so that the drive gear 15 meshes with the teeth of the gear 2 19, the motor 14 starts, and its power drive end drives the drive gear 15 to rotate, the drive gear 15 transmits power to the gear 2 19, and drives the gear 3 20 at the bottom to rotate through the connecting shaft 18. The gear 3 20 meshes with the teeth of the inner gear 9, thereby driving the inner gear 9 to rotate. The rotating frame 8 installed at the bottom of the inner gear 9 is located outside the agitator 6. The rotating frame 8 will rotate with the rotation of the inner gear 9, thereby driving the rotation of several sets of scrapers 10 connected to the bottom of the rotating frame 8. One side of the scraper 10 is in contact with the inner wall of the hopper device 1, which can scrape off the grouting liquid adhering to the inner wall of the hopper device 1.

[0033] Example 2

[0034] In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that when the ambient temperature is low or the grout needs to maintain a specific temperature, the heating plate 2 is turned on to heat the grout in the discharge hopper device 1 through heat conduction. The discharge hopper device 1 is made of heat-conducting material to ensure that the grout is at a suitable working temperature and to prevent it from solidifying or becoming less fluid due to excessively low temperature. The heat insulation pad 3 installed on the outside of the heating plate 2 can effectively reduce heat loss and improve heating efficiency. The control device 4 is used to precisely control the heating temperature and time of the heating plate 2 to meet the needs of different construction environments and grout characteristics.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grouting fluid discharge hopper for tunnel boring machines, comprising a discharge hopper device (1), characterized in that: Also includes: Heating plate (2), stirring paddle (6) and scraper (10); The heating plate (2) is installed outside the hopper device (1) for heating the hopper device (1); The stirring paddle (6) is located inside the discharge hopper device (1) and is used to stir the grouting liquid inside the discharge hopper device (1); The scraper (10) is provided in several sets, and one side of the scraper (10) is in contact with the inner wall of the hopper device (1). The scraper (10) scrapes off the grouting liquid adhering to the inner wall of the hopper device (1). The stirring paddle (6) and the scraper (10) operate independently.

2. The shield tunneling grouting fluid discharge hopper according to claim 1, characterized in that: The heating plate (2) is equipped with a heat insulation pad (3) on the outside, and a control device (4) is installed on the outside of the heat insulation pad (3). The top plate (5) is provided on the top of the hopper device (1).

3. The shield tunneling grouting fluid discharge hopper according to claim 2, characterized in that: The top plate (5) is movably connected to the stirring paddle (6) via a bearing. A gear (7) is installed on the top of the stirring paddle (6), and a rotating frame (8) is connected to the outside of the stirring paddle (6).

4. The shield tunneling grouting fluid discharge hopper according to claim 3, characterized in that: An internal gear (9) is installed on the top of the rotating frame (8), and the bottom of the rotating frame (8) is connected to several sets of scrapers (10). A connecting groove (11) is opened on the top of the top plate (5).

5. The shield tunneling grouting fluid discharge hopper according to claim 4, characterized in that: A connecting seat (12) is slidably connected inside the connecting groove (11). The connecting seat (12) is made of iron. A mounting bracket (13) is installed on the top of the connecting seat (12). A motor (14) is installed on one side of the mounting bracket (13).

6. The shield tunneling grouting fluid discharge hopper according to claim 5, characterized in that: The power drive end of the motor (14) is connected to a drive gear (15), and electromagnet one (16) and electromagnet two (17) are respectively provided on both sides of the inside of the connecting groove (11). The top plate (5) is connected to a connecting shaft (18).

7. The shield tunneling grouting fluid discharge hopper according to claim 6, characterized in that: Gear 2 (19) and gear 3 (20) are respectively installed at the top and bottom of the connecting shaft (18).

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