Shield tunneling machine deslagging metering system

Abstract

The utility model provides a shield tunneling machine deslagging metering system which comprises two groove-shaped brackets, fixing plates are fixedly installed at the tops of the two groove-shaped brackets, and connecting plates are fixedly installed at the tops of the fixing plates. The weighing sensor can be quickly mounted and dismounted through the mounting assembly and the limiting plate, the weighing sensor is more convenient to overhaul and maintain when needing to be overhauled, and the parallelogram weighing sensor only bears vertical force transmitted by the weighing carrier roller, so that the weighing sensor is more convenient to maintain. The groove-shaped bracket is provided with the two weighing sensors, so that the groove-shaped bracket is not influenced by various lateral forces including horizontal component forces of a belt and materials in the running direction and friction force of the carrier rollers, the groove-shaped bracket can quickly respond to the borne vertical force, and compared with most single-carrier-roller scale frames only provided with one weighing sensor, the groove-shaped bracket has the advantages that the weight is reduced, and the cost is reduced. The influence of eccentric load possibly caused by belt deviation, material accumulation on the belt and deviation to one side and the like on the weighing accuracy is much smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, and more specifically, to a slag discharging metering system for a shield machine. Background Art

[0002] A shield machine is a tunnel boring equipment using the shield method, specifically for underground boring operations in soft bottom soil layers, which is of extremely important significance for the construction of urban rail transit. The shield machine uses the shield method to carry out excavation work underground and can temporarily support the excavated tunnel in real time, playing the roles of excavation, support, soil discharge, and lining, ensuring the safety of the working environment of construction workers and improving the excavation efficiency of underground tunnels. The soil discharge volume in the subway shield system is an important reference quantity for judging whether there is a landslide or ground heave in the front. When there is too much muck and the shield machine moves too slowly, a landslide may occur in front of the shield machine. When there is too little muck and the shield machine moves too fast, ground heave may occur in the front. Therefore, it is necessary to measure the muck discharged during shield tunneling, measure the shield muck in real time, and ensure the accuracy of the muck volume measurement.

[0003] In the prior art, the detection of the muck volume is mainly through calculating and estimating the volume of the muck box or making a section of belt rack, and installing a weight sensor under the belt rack to detect the weight of the muck on the belt. Calculating the volume of the muck box cannot analyze the muck volume of the shield machine in real time, and the analyzed data is inaccurate, resulting in the situation that if the shield machine overexcavates or under-excavates, it cannot be immediately feedback to the operator in time, causing serious construction accidents. Installing a weight sensor under the belt rack for detection is inconvenient for installation due to its complex structure and large volume. Since the weight sensor is installed under the belt, it is difficult to overhaul and maintain.

[0004] Therefore, we make improvements on this and propose a slag discharging metering system for a shield machine. Summary of the Utility Model

[0005] The purpose of the present utility model is to solve the problems in the prior art that the detection of the muck volume is mainly through calculating and estimating the volume of the muck box or making a section of belt rack, and installing a weight sensor under the belt rack to detect the weight of the muck on the belt. Calculating the volume of the muck box cannot analyze the muck volume of the shield machine in real time, and the analyzed data is inaccurate, resulting in the situation that if the shield machine overexcavates or under-excavates, it cannot be immediately feedback to the operator in time, causing serious construction accidents. Installing a weight sensor under the belt rack for detection is inconvenient for installation due to its complex structure and large volume. Since the weight sensor is installed under the belt, it is difficult to overhaul and maintain.

[0006] In order to achieve the above-mentioned invention purpose, the present utility model provides the following technical solutions:

[0007] A slag discharging metering system for a shield machine to improve the above problems.

[0008] The specific implementation of this application is as follows:

[0009] It includes two trough-shaped brackets. Fixed plates are fixedly installed at the tops of the two trough-shaped brackets. A connecting plate is fixedly installed at the top of the fixed plate. An installation plate is fixedly installed on one side of the connecting plate. An installation component is fixedly installed at the top of the inner cavity of the installation plate. A weighing sensor is detachably installed on one side of the installation plate. Limit plates are fixedly installed at the four corners on one side of the weighing sensor. A speed sensor is arranged on one side of the trough-shaped bracket. A weighing controller is electrically connected between one sides of the weighing sensor and the speed sensor. A PLC is electrically connected to one side of the weighing controller. A host computer is electrically connected to one side of the PLC.

[0010] The weighing sensor can be quickly installed and disassembled through the installation component and the limit plates, which is more convenient when the weighing sensor needs to be repaired and maintained. A parallelogram weighing sensor is used, so it only bears the vertical force transmitted through the weighing idler and is not affected by various lateral forces including the horizontal component of the belt and materials in the running direction and the friction force of the idler. Moreover, it can quickly respond to the vertical force it bears. Since two weighing sensors are installed on both sides below the trough-shaped bracket, compared with most single-idler weighing frames with only one weighing sensor, the influence of eccentric loads that may be caused by belt deviation, material accumulation on one side of the belt, etc. on the weighing accuracy is much smaller.

[0011] As a preferred implementation manner of the slag discharging metering system for the shield machine provided by the present utility model, the installation component includes an electric telescopic rod. The electric telescopic rod is fixedly installed at the top of the inner cavity of the installation plate. A support block is fixedly installed at the bottom of the electric telescopic rod. A toothed plate is fixedly installed on one side of the support block. Gears are meshed with the front side and the rear side of the toothed plate respectively. A support rod is fixedly installed in the inner cavity of the gear. One side of the support rod close to the installation plate is movably connected to the installation plate. Moving rods are fixedly installed on one sides of the two gears respectively. A fixing frame is movably installed on the surface of the moving rod. Two clamping blocks are fixedly installed on one side of the fixing frame.

[0012] As a preferred implementation manner of the slag discharging metering system for the shield machine provided by the present utility model, a stabilizing plate is sleeved on the top of the surface of the electric telescopic rod. One side of the stabilizing plate close to the installation plate is fixedly connected to the installation plate.

[0013] As a preferred implementation manner of the slag discharging metering system for the shield machine provided by the present utility model, a limit block is fixedly installed on one side of the toothed plate. A limit shell is arranged on the surface of the limit block. One side of the limit shell close to the installation plate is fixedly connected to the installation plate.

[0014] As a preferred embodiment of the slag discharging metering system of the shield machine provided by the present utility model, sliding blocks are fixedly installed at both the top and bottom of the movable rod. A sliding rod is slidably installed in the inner cavity of the sliding block, and one side of the sliding rod close to the mounting plate is fixedly connected to the mounting plate.

[0015] As a preferred embodiment of the slag discharging metering system of the shield machine provided by the present utility model, positioning plates are fixedly installed on both the front side and the rear side of the speed sensor, and one side of the positioning plate close to the trough-shaped bracket is fixedly connected to the trough-shaped bracket.

[0016] As a preferred embodiment of the slag discharging metering system of the shield machine provided by the present utility model, bolts are arranged at the top of the fixing plate, and two bolts are symmetrically arranged.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The weighing sensor can be quickly installed and disassembled through the installation component and the limiting plate, which is more convenient when the weighing sensor needs to be overhauled and maintained. The parallelogram weighing sensor is used, so it only bears the vertical force transmitted through the weighing idler and is not affected by various lateral forces, including the horizontal component of the belt and the material in the running direction and the friction force of the idler. Moreover, it can quickly respond to the vertical force it bears. Since two weighing sensors are installed on both sides below the trough-shaped bracket, compared with most single idler weighing frames with only one weighing sensor, the influence of eccentric loads that may be caused by belt deviation, material accumulation on one side of the belt, etc. on the weighing accuracy is much smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the slag discharging metering system of the shield machine provided by the present application;

[0020] Figure 2 It is a side view schematic diagram of the fixing plate of the slag discharging metering system of the shield machine provided by the present application;

[0021] Figure 3 It is a front view schematic diagram of the weighing sensor of the slag discharging metering system of the shield machine provided by the present application;

[0022] Figure 4 It is a side view sectional schematic diagram of the mounting plate of the slag discharging metering system of the shield machine provided by the present application;

[0023] Figure 5 It is a side view schematic diagram of the installation component of the slag discharging metering system of the shield machine provided by the present application;

[0024] Figure 6 It is a schematic diagram of the principle of the slag discharging metering system of the shield machine provided by the present application.

[0025] Indications in the figure:

[0026] 1. Grooved bracket; 2. Fixed plate; 3. Connecting plate; 4. Mounting plate; 5. Mounting assembly; 501. Electric telescopic rod; 502. Support block; 503. Toothed plate; 504. Gear; 505. Support rod; 506. Movable rod; 507. Fixed frame; 508. Block; 509. Stabilizing plate; 510. Limit block; 511. Limit shell; 512. Sliding block; 513. Sliding rod; 6. Weighing sensor; 7. Limit plate; 8. Speed sensor; 9. Weighing controller; 10. PLC; 11. Host computer; 12. Positioning plate; 13. Bolt. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0028] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0032] As described in the background art, in the prior art, the detection of the volume of muck is mainly carried out by calculating and estimating the volume of the muck box or by making a section of belt rack and installing a weight sensor under the belt rack to detect the weight of the muck on the belt. Calculating the volume of the muck box cannot analyze the volume of the muck of the shield machine in real time, and the analysis data is inaccurate, resulting in the situation that if the shield machine overexcavates or under-excavates, it cannot be immediately fed back to the operator, causing serious construction accidents. Installing a weight sensor under the belt rack for detection is inconvenient to install due to its complex structure and large volume, and it is difficult to repair and maintain because the weight sensor is installed under the belt.

[0033] To solve this technical problem, the present utility model provides a muck metering system for a shield machine.

[0034] Specifically, please refer to Figures 1-6 , the muck metering system for a shield machine specifically includes: two trough-shaped brackets 1, fixing plates 2 are fixedly installed at the tops of the two trough-shaped brackets 1, a connecting plate 3 is fixedly installed at the top of the fixing plate 2, a mounting plate 4 is fixedly installed on one side of the connecting plate 3, a mounting assembly 5 is fixedly installed at the top of the inner cavity of the mounting plate 4, a weighing sensor 6 is detachably installed on one side of the mounting plate 4, limit plates 7 are fixedly installed at the four corners on one side of the weighing sensor 6, a speed sensor 8 is arranged on one side of the trough-shaped bracket 1, a weighing controller 9 is electrically connected between one sides of the weighing sensor 6 and the speed sensor 8, a PLC 10 is electrically connected to one side of the weighing controller 9, and a host computer 11 is electrically connected to one side of the PLC 10.

[0035] The weighing sensor 6 can be quickly installed and disassembled through the mounting assembly 5 and the limit plates 7, which is more convenient when the weighing sensor 6 needs to be repaired and maintained. A parallelogram weighing sensor 6 is used, so it only bears the vertical force transmitted through the weighing idler and is not affected by various lateral forces including the horizontal component of the belt and materials in the running direction and the friction force of the idler. Moreover, it can quickly respond to the vertical force it bears. Since two weighing sensors 6 are installed on both sides under the trough-shaped bracket 1, compared with most single-idler weighing frames with only one weighing sensor 6, the influence of eccentric loads that may be caused by belt deviation, material accumulation on one side of the belt, etc. on the weighing accuracy is much smaller.

[0036] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0037] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0038] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] Embodiment 1

[0040] Please refer to Figures 1-6 , a slag discharging metering system for a shield machine, including two trough-shaped brackets 1. Fixed plates 2 are fixedly installed at the tops of the two trough-shaped brackets 1. A connecting plate 3 is fixedly installed at the top of the fixed plate 2. An installation plate 4 is fixedly installed on one side of the connecting plate 3. An installation component 5 is fixedly installed at the top of the inner cavity of the installation plate 4. A weighing sensor 6 is detachably installed on one side of the installation plate 4. Limit plates 7 are fixedly installed at the four corners on one side of the weighing sensor 6. A speed sensor 8 is arranged on one side of the trough-shaped bracket 1. A weighing controller 9 is electrically connected between one sides of the weighing sensor 6 and the speed sensor 8. A PLC 10 is electrically connected to one side of the weighing controller 9. A host computer 11 is electrically connected to one side of the PLC 10.

[0041] During the implementation process, a parallelogram weighing sensor 6 is used, so it only bears the vertical force transmitted through the weighing idler and is not affected by various lateral forces, including the horizontal component of the belt and material in the running direction and the friction force of the idler. Moreover, it can quickly respond to the vertical force it bears. Since two weighing sensors 6 are installed on both sides below the trough-shaped bracket 1, compared with most single idler weighing frames with only one weighing sensor 6, the influence of eccentric loads that may be caused by belt deviation, material accumulation on one side of the belt, etc. on the weighing accuracy is much smaller. At the same time, because there are two support points, in the case of the same stiffness, a smaller steel section can be selected to further reduce the weight of the weighing frame. The entire weighing frame can be easily installed on the belt conveyor only with four bolts 13 and a set of existing trough-shaped brackets 1. Since the length of the weighing frame along the running direction of the belt is very short, it can operate on a belt conveyor in a very narrow space. There are no levers, no fulcrums, and no counterweights in the structure. The weight of the material is directly applied to the weighing sensor 6 through the weighing idler group, and the tare weight and material weight are weighed together, so the structure of the weighing frame is very simple and the weight is very light.

[0042] Embodiment 2

[0043] The installation component 5 includes an electric telescopic rod 501, which is fixedly installed at the top of the inner cavity of the mounting plate 4. A support block 502 is fixedly installed at the bottom of the electric telescopic rod 501. A toothed plate 503 is fixedly installed on one side of the support block 502. Gears 504 are engaged with both the front and rear sides of the toothed plate 503. A support rod 505 is fixedly installed in the inner cavity of the gear 504. The side of the support rod 505 close to the mounting plate 4 is movably connected to the mounting plate 4. Moving rods 506 are fixedly installed on one side of both gears 504. A fixed frame 507 is movably installed on the surface of the moving rod 506. Two clamping blocks 508 are fixedly installed on one side of the fixed frame 507. A stabilizing plate 509 is sleeved on the top of the surface of the electric telescopic rod 501. The side of the stabilizing plate 509 close to the mounting plate 4 is fixedly connected to the mounting plate 4. A limiting block 510 is fixedly installed on one side of the toothed plate 503. A limiting shell 511 is arranged on the surface of the limiting block 510. The side of the limiting shell 511 close to the mounting plate 4 is fixedly connected to the mounting plate 4. Sliding blocks 512 are fixedly installed on both the top and bottom of the moving rod 506. A sliding rod 513 is slidably installed in the inner cavity of the sliding block 512. The side of the sliding rod 513 close to the mounting plate 4 is fixedly connected to the mounting plate 4.

[0044] During the implementation process, by starting the electric telescopic rod 501, when the electric telescopic rod 501 is in use, it drives the toothed plate 503 to move through the support block 502. The two gears 504 are engaged on both sides of the toothed plate 503 and will rotate as the toothed plate 503 moves. Subsequently, when the gears 504 rotate, they drive the fixed frame 507 to move through the moving rod 506. The clamping blocks 508 will move as the fixed frame 507 moves. Move the clamping blocks 508 into the grooves on the limiting plate 7, and the limiting plate 7 can be fixedly installed. When it is necessary to disassemble the limiting plate 7, move the clamping blocks 508 out, and the limiting plate 7 can be disassembled. The weighing sensor 6 is installed on the limiting plate 7 and will be installed and disassembled along with the limiting plate 7, so that the weighing sensor 6 can be quickly installed and disassembled, and it is more convenient when it is necessary to repair and maintain the weighing sensor 6.

[0045] During use, the parallelogram load cell 6 is used, so it only bears the vertical force transmitted through the weighing idlers and is not affected by various lateral forces, including the horizontal component of the belt and materials in the running direction and the friction force of the idlers. Moreover, it can quickly respond to the vertical force it bears. Since two load cells 6 are installed on both sides below the trough-shaped bracket 1, compared with most single-idler weighing frames with only one load cell 6, the influence of eccentric loads that may be caused by belt deviation, material accumulation on one side of the belt, etc. on the weighing accuracy is much smaller. At the same time, because there are two support points, in the case of the same stiffness, a smaller steel section can be selected to further reduce the weight of the weighing frame. The entire weighing frame can be easily installed on the belt conveyor with only four bolts 13 and a set of existing trough-shaped brackets 1. Since the length of the weighing frame along the running direction of the belt is very short, it can operate on a belt conveyor in a very narrow space. There are no levers, no fulcrums, and no counterweights in the structure. The weight of the material is directly applied to the load cell 6 through the weighing idler group, and the tare weight and the material weight are weighed together, so the structure of the weighing frame is very simple and the weight is very light. By starting the electric telescopic rod 501, when the electric telescopic rod 501 is in use, it drives the toothed plate 503 to move through the support block 502. The two gears 504 are engaged on both sides of the toothed plate 503 and will rotate as the toothed plate 503 moves. Subsequently, when the gears 504 rotate, they drive the fixed frame 507 to move through the movable rod 506. The clamping block 508 will move as the fixed frame 507 moves. When the clamping block 508 is moved into the groove on the limit plate 7, the limit plate 7 can be fixedly installed. When the limit plate 7 needs to be disassembled, the clamping block 508 is removed, and the limit plate 7 can be disassembled. The load cell 6 is installed on the limit plate 7 and will be installed and disassembled with the limit plate 7, so that the load cell 6 can be quickly installed and disassembled, which is more convenient when the load cell 6 needs to be overhauled and maintained.

[0046] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A muck metering system for a shield machine, comprising two trough-shaped brackets (1), characterized in that, On the top of each of the two channel brackets (1), a fixed plate (2) is fixedly installed. On the top of the fixed plate (2), a connecting plate (3) is fixedly installed. On one side of the connecting plate (3), a mounting plate (4) is fixedly installed. On the top of the inner cavity of the mounting plate (4), a mounting component (5) is fixedly installed. On one side of the mounting plate (4), a weighing sensor (6) is detachably installed. At the four corners on one side of the weighing sensor (6), limit plates (7) are fixedly installed. On one side of the channel bracket (1), a speed sensor (8) is provided. Between one side of the weighing sensor (6) and one side of the speed sensor (8), a weighing controller (9) is electrically connected. On one side of the weighing controller (9), a PLC (10) is electrically connected. On one side of the PLC (10), a host computer (11) is electrically connected.

2. The mucking metering system of a shield machine according to claim 1, wherein The mounting component (5) includes an electric telescopic rod (501). The electric telescopic rod (501) is fixedly installed on the top of the inner cavity of the mounting plate (4). At the bottom of the electric telescopic rod (501), a support block (502) is fixedly installed. On one side of the support block (502), a toothed plate (503) is fixedly installed. The toothed plate (503) is meshed with gears (504) on both the front side and the rear side. Inside the cavity of the gear (504), a support rod (505) is fixedly installed. The side of the support rod (505) close to the mounting plate (4) is movably connected to the mounting plate (4). On one side of each of the two gears (504), a movable rod (506) is fixedly installed. On the surface of the movable rod (506), a fixed frame (507) is movably installed. On one side of the fixed frame (507), two clamping blocks (508) are fixedly installed.

3. The mucking metering system of a shield machine according to claim 2, characterized in that, On the top of the surface of the electric telescopic rod (501), a stabilizing plate (509) is sleeved. The side of the stabilizing plate (509) close to the mounting plate (4) is fixedly connected to the mounting plate (4).

4. The mucking metering system of a shield machine according to claim 2, wherein, On one side of the toothed plate (503), a limit block (510) is fixedly installed. On the surface of the limit block (510), a limit shell (511) is provided. The side of the limit shell (511) close to the mounting plate (4) is fixedly connected to the mounting plate (4).

5. The mucking metering system of a shield machine according to claim 2, wherein, On the top and bottom of the movable rod (506), sliding blocks (512) are fixedly installed. Inside the cavity of the sliding block (512), a sliding rod (513) is slidably installed. The side of the sliding rod (513) close to the mounting plate (4) is fixedly connected to the mounting plate (4).

6. The muck discharging metering system of a shield machine according to claim 1, characterized in that, On the front side and the rear side of the speed sensor (8), positioning plates (12) are fixedly installed. The side of the positioning plate (12) close to the channel bracket (1) is fixedly connected to the channel bracket (1).

7. The mucking metering system of a shield machine according to claim 6, wherein On the top of the fixed plate (2), bolts (13) are provided. There are two bolts (13) arranged symmetrically.

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