Mortar liquid level height monitoring device for mortar tank of shield tunneling machine and shield tunneling machine

Abstract

The utility model provides a mortar liquid level height monitoring device of a mortar tank of a shield tunneling machine and the shield tunneling machine. The mortar liquid level height monitoring device comprises a monitoring assembly. The monitoring assembly comprises a shell, a transparent window and a laser range finder. The housing has an inner cavity. The transparent window is arranged at the bottom end of the shell. The laser range finder is arranged in the inner cavity of the shell and comprises a laser emitter and a receiver, the laser emitter emits laser to the mortar liquid level through the transparent window, and the receiver receives the reflected laser. According to the mortar liquid level height monitoring device, the laser range finder is arranged in the shell and transmits or receives the laser through the transparent window, the situation that mortar is splashed to the laser range finder to affect detection is effectively avoided, and therefore the monitoring assembly can improve the detection accuracy of the liquid level height of the mortar.

Description

Technical Field

[0001] The present application relates to the technical field of shield machines, and in particular to a mortar liquid level height monitoring device for a mortar tank of a shield machine and a shield machine. Background Art

[0002] During the construction of the shield machine, in order to control ground settlement, mortar is needed to fill the wall of the segment after the segment is assembled. The amount of grouting is one of the decisive factors affecting the quality of tunnel segment forming. The mortar is stored in a mortar tank. When the cross-section of the mortar tank is constant, the volume of grouting can be calculated by measuring the change in the liquid level in the grouting tank. Therefore, how to improve the detection accuracy of the liquid level in the grouting tank is an urgent problem to be solved.

[0003] It should be noted that the statements in this background technology section only provide background technology related to the present application and do not necessarily constitute prior art. Utility Model Content

[0004] The present application provides a mortar liquid level height monitoring device for a mortar tank of a shield machine and a shield machine, so as to improve the detection accuracy of the liquid level height of the mortar.

[0005] The first aspect of the present application provides a mortar level height monitoring device for a mortar tank of a shield machine, comprising a monitoring component. The monitoring component comprises a housing, a transparent window and a laser rangefinder. The housing has an inner cavity. The transparent window is arranged at the bottom of the housing. The laser rangefinder is arranged in the inner cavity of the housing and comprises a laser transmitter and a receiver, the laser transmitter transmits a laser to the mortar liquid surface through the transparent window, and the receiver receives the reflected laser.

[0006] In some embodiments, the monitoring component is fixedly disposed above the mortar tank of the shield machine.

[0007] In some embodiments, the bottom end of the housing has an opening, and the transparent window includes a transparent lens disposed at the opening.

[0008] In some embodiments, the monitoring component further includes a protective cover disposed on the outside of the transparent window.

[0009] In some embodiments, the housing includes a shell body and a cover body detachably disposed on the shell body, and the cover body covers the opening of the shell body to enclose and form an inner cavity.

[0010] In some embodiments, the cover is connected to the shell body by a plurality of bolts.

[0011] In some embodiments, the monitoring component also includes a data acquisition board electrically connected to the laser rangefinder, and the data acquisition board is used to receive and process the ranging data of the laser rangefinder.

[0012] In some embodiments, the monitoring assembly further comprises a mounting portion, which is connected to the outer side of the side wall of the housing and is used to be mounted on a fixture located outside the mortar tank of the shield machine to fix the monitoring assembly.

[0013] In some embodiments, the mortar liquid level monitoring device includes a plurality of monitoring components, and the plurality of monitoring components are used to measure the liquid level at different positions of the mortar liquid surface.

[0014] In some embodiments, the emission direction of the laser light of the laser emitter is perpendicular to the mortar liquid surface; or, the emission direction of the laser light of the laser emitter is inclined relative to the mortar liquid surface.

[0015] The second aspect of the present application provides a shield machine, comprising a shield machine body, a shield locomotive, a grouting unit, a mortar tank, and the above-mentioned mortar liquid level height monitoring device. The mortar liquid level height monitoring device is used to monitor the liquid level height of the mortar liquid surface of the mortar tank, the shield locomotive is in fluid communication with the mortar tank to replenish the mortar into the mortar tank, the grouting unit is in fluid communication with the mortar tank to transport the mortar to the grouting unit for grouting operation, and when the mortar liquid level height monitoring device monitors that the liquid level height of the mortar liquid surface of the mortar tank is lower than a set value, the shield locomotive replenishes the transported mud slurry into the mortar tank.

[0016] Based on the technical solution provided by the present application, the mortar liquid level monitoring device includes a monitoring component. The monitoring component includes a housing, a transparent window and a laser rangefinder. The housing has an inner cavity. The transparent window is arranged at the bottom of the housing. The laser rangefinder is arranged in the inner cavity of the housing and includes a laser transmitter and a receiver. The laser transmitter transmits a laser to the mortar liquid surface through the transparent window, and the receiver receives the reflected laser. The mortar liquid level height monitoring device of the present application is provided with a monitoring component, and the laser rangefinder of the monitoring component is arranged in an outer shell to protect the laser rangefinder, and a transparent window is arranged at the bottom end of the outer shell, so that the laser transmitter of the laser rangefinder can emit laser to the mortar liquid surface through the transparent window, and the reflected laser can also be received by the receiver through the transparent window. In this way, the monitoring component of the present application uses the laser rangefinder, a non-contact measurement method, to measure the mortar liquid level, and the laser rangefinder is arranged in the outer shell and emits or receives laser through the transparent window, which effectively prevents mortar from splashing onto the laser rangefinder and affecting the detection. Therefore, the monitoring component of the embodiment of the present application can improve the detection accuracy of the mortar liquid level.

[0017] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 Schematic diagram of the installation position of the monitoring components of the mortar liquid level monitoring device in some embodiments of the present application.

[0020] Figure 2 This is a side structural schematic diagram of a monitoring component of a mortar liquid level monitoring device according to some embodiments of the present application.

[0021] Figure 3 This is a schematic diagram of the rear structural view of the monitoring component of the mortar liquid level monitoring device in some embodiments of the present application.

[0022] Figure 4 This is a schematic diagram of the bottom-up structure of the monitoring component of the mortar liquid level monitoring device in some embodiments of the present application.

[0023] Figure 5 This is a schematic diagram of the exploded structure of the monitoring components of the mortar liquid level monitoring device of some embodiments of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0027] refer to Figure 1 The mortar level height monitoring device of the shield machine mortar tank of some embodiments of the present application includes a monitoring component 10. The monitoring component 10 includes a housing 11, a transparent window 14 and a laser rangefinder 12. The housing 11 has an inner cavity. The transparent window 14 is arranged at the bottom end of the housing 11. The laser rangefinder 12 is arranged in the inner cavity of the housing 11 and includes a laser transmitter and a receiver. The laser transmitter emits a laser to the mortar liquid surface through the transparent window 14. The receiver receives the reflected laser.

[0028] The mortar liquid level monitoring device of the embodiment of the present application is provided with a monitoring component 10, and the laser rangefinder 12 of the monitoring component 10 is arranged in a shell 11 to protect the laser rangefinder 12, and a transparent window 14 is arranged at the bottom end of the shell 11, so that the laser transmitter of the laser rangefinder 12 can emit laser to the mortar liquid surface through the transparent window 14, and the reflected laser can also be received by the receiver through the transparent window 14. In this way, the monitoring component 10 of the embodiment of the present application uses the laser rangefinder 12 as a non-contact measurement method to measure the mortar liquid level, and the laser rangefinder 12 is arranged in the shell 11 and emits or receives laser through the transparent window 14, which effectively prevents mortar from splashing onto the laser rangefinder 12 and affecting the detection. Therefore, the monitoring component 10 of the embodiment of the present application can improve the detection accuracy of the mortar liquid level.

[0029] like Figure 1As shown, the monitoring assembly 10 is fixed on a fixture 30 above the shield machine mortar tank 20 so that the monitoring assembly 10 is located above the shield machine mortar tank 20. In this way, the laser transmitter of the laser rangefinder 12 emits a laser to the mortar liquid surface through the transparent window 14, and the laser returns to the receiver after being reflected from the liquid surface. The data acquisition board 17 is electrically connected to the laser rangefinder 12 to calculate the distance traveled by the laser beam by measuring the emission time and reception time of the laser beam, and then accurately measure the distance between the mortar liquid surface and the laser rangefinder, and then obtain the data of the mortar liquid surface height.

[0030] In some embodiments, the monitoring assembly 10 is fixedly arranged above the shield machine mortar tank 20. Specifically, the monitoring assembly 10 is fixedly connected to a fixture 30. The fixture 30 can be any fixture on the trolley or any fixture on the shield machine, as long as it plays the role of fixing the monitoring assembly 10 above the shield machine mortar tank 20.

[0031] like Figure 4 and Figure 5 As shown, in some embodiments, the bottom end of the housing 11 is open. The transparent window 14 includes a transparent lens disposed at the bottom end of the housing 11. The bottom end of the housing 11 of the embodiment of the present application is open and is provided with a transparent lens, so that the transparent lens not only forms a protection for the laser rangefinder 12 to prevent the mortar from contaminating the laser rangefinder and causing an adverse effect on the detection result, but also the transparent lens is transparent, so it will not block the emission and reflection of the laser. Specifically, for example, the bottom end of the housing 11 is provided with an opening, and the transparent lens is provided at the opening of the housing 11 to form a transparent window 14. For another example, the bottom end of the housing 11 is provided with an opening, and a transparent film is provided at the opening of the housing 11 to form a transparent window 14.

[0032] Of course, in some other embodiments not shown in the drawings, the bottom end of the housing 11 is provided with an opening, and the opening is open without any components, and the opening directly forms a transparent window 14. The laser rangefinder 12 emits laser through the transparent window 14.

[0033] In some embodiments, the bottom end of the housing 11 is open, and the entire bottom end of the housing 11 is open. In this case, the transparent window 14 extends over the entire bottom end of the housing 11. In other embodiments, the bottom end of the housing 11 is open, and the bottom end of the housing 11 has an opening (the opening may be an opening), that is, the opening occupies a portion of the end surface area of ​​the bottom end of the housing 11. In this case, the transparent window 14 is formed only at the opening.

[0034] like Figure 1As shown, in the process of monitoring the height of the mortar liquid level by the monitoring assembly 10 of the embodiment of the present application, the transparent window 14 of the monitoring assembly 10 is at the lower end and close to the mortar liquid level, so the transparent window 14 is easily contaminated by the splashing mortar. In order to further protect the transparent window 14, in some embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the monitoring assembly 10 further includes a protective cover 16 which is disposed on the outside of the transparent window 14 .

[0035] like Figure 4 As shown, the transparent window 14 is a rectangular structure, which is formed at the opening of the bottom end of the housing 11. The laser rangefinder 12 emits laser through the transparent window 14. The protective cover 16 is disposed outside the transparent window 14 and fixedly connected to the bottom end surface of the housing 11.

[0036] Specifically, Figures 2 to 5 As shown, the protective cover 16 includes a cover shell 161 and an annular connecting edge 162 arranged at the end of the cover shell 161. The annular connecting edge 162 extends radially outward relative to the cover shell 161 and is connected to the bottom end surface of the housing 11. The cover shell 161 is a cylindrical structure, the side wall of which is non-transparent, and the bottom end wall of which is transparent so that the laser emitted by the laser rangefinder 12 is emitted through the bottom end wall, thereby avoiding the laser from being emitted through the side wall to improve the accuracy of the laser emission direction, and further improve the monitoring accuracy.

[0037] refer to Figure 5 In some embodiments, the housing 11 includes a housing body 111 and a cover body 112 detachably disposed on the housing body 111. The cover body 112 covers the opening of the housing body 111 to enclose and form an inner cavity. Figure 5 As shown, the shell body 111 is a square shell with an opening on the side. The cover body 112 is detachably connected to the shell body 111, so that it is convenient to repair or replace the laser rangefinder 12 located in the inner cavity.

[0038] refer to Figure 5 In some embodiments, the cover 112 is connected to the shell body 111 by a plurality of bolts 18. The plurality of bolts 18 are distributed at intervals in the circumferential direction of the cover 112.

[0039] In some embodiments, the monitoring assembly 10 further includes a data acquisition board 17 electrically connected to the laser rangefinder 12. The data acquisition board 17 is used to receive and process the distance measurement data of the laser rangefinder 12. The data acquisition board 17 is electrically connected to the laser rangefinder 12 to calculate the distance traveled by the laser beam by measuring the emission time and the reception time of the laser beam, thereby accurately measuring the distance between the liquid surface of the mortar and the laser rangefinder, and then obtaining the data of the liquid surface height of the mortar.

[0040] In some embodiments, the monitoring assembly 10 further includes a mounting portion 19. The mounting portion 19 is connected to the outer side of the side wall of the housing 11. The mounting portion 19 is used to be mounted on a fixture 30 located outside the mortar tank of the shield machine to fix the monitoring assembly 10.

[0041] like Figure 3 As shown, the monitoring assembly 10 includes two mounting portions 19 respectively located on both sides of the housing 11. The two mounting portions 19 are respectively connected to the fixture 30 to fix the monitoring assembly 10. Specifically, the mounting portion 19 has a smaller dimension in the height direction than the housing 11 in the height direction and is located in the middle area of ​​the housing 11.

[0042] In some embodiments, the mortar liquid level height monitoring device includes a plurality of monitoring components 10. The plurality of monitoring components 10 are used to measure the liquid level at different positions of the mortar liquid surface. By setting a plurality of monitoring components 10 at different positions to achieve multi-point measurement, the liquid level height can be comprehensively calculated based on the results of the multi-point measurement, thereby improving the accuracy of obtaining the liquid level height. The different positions of the mortar liquid surface mentioned here refer to different positions within the cross section of the mortar liquid surface. Due to vibration and other reasons, the height of the mortar liquid surface at different positions may be different, so the adverse effects of height differences on the calculation of the liquid level height can be eliminated by measuring multiple points.

[0043] In some embodiments, the emission direction of the laser of the laser transmitter of the monitoring component 10 is perpendicular to the mortar liquid surface. In other embodiments, the emission direction of the laser of the laser transmitter of the monitoring component 10 is set obliquely relative to the mortar liquid surface. That is to say, the emission direction of the laser can be perpendicular to the mortar liquid surface or can be set obliquely relative to the mortar liquid surface.

[0044] refer to Figure 3 A wire-passing hole is provided at the top of the housing 11 , and a plug 15 is provided in the wire-passing hole to supply power to the laser rangefinder 12 .

[0045] The embodiment of the present application also provides a shield machine, including a shield machine body, a grouting part, a mortar tank, and the above-mentioned mortar liquid level height monitoring device. The mortar liquid level height monitoring device is used to monitor the liquid level height of the mortar liquid surface in the mortar tank. When the mortar liquid level height monitoring device monitors that the liquid level height of the mortar liquid surface in the mortar tank is lower than a set value, the shield locomotive of the shield machine body is connected to the mortar tank, and is used to replenish the transported mud slurry into the mortar tank when receiving a signal from the mortar liquid level height monitoring device that the liquid level height is lower than the set value.

[0046] The mortar level monitoring device of the embodiment of the present application can indirectly provide the injection amount of the grouting hand and the consumption of the synchronous grouting by accurately measuring the height of the mortar level in the mortar tank, helping the grouting hand to accurately control the grouting amount of the current ring and improve the construction quality. On the other hand, the monitoring device is small in size and light in weight, and is easy to install and replace. Some structural protection is done to avoid the risk of inaccurate measurement caused by mortar splashing to the laser position.

[0047] The monitoring assembly 10 of the embodiment of the present application can be installed at multiple points above the mortar tank 20 to monitor the liquid level of the mortar tank 20 in real time, thereby realizing real-time monitoring of the liquid level of the mortar tank during the tunneling process of the shield machine. The multi-point arrangement of the monitoring assembly 10 realizes all-round monitoring of the liquid level of the mortar tank.

[0048] The monitoring assembly 10 is arranged above the observation window of the mortar tank 20. Of course, the installation position of the monitoring assembly 10 is not limited to the position of the observation window, and can be installed at a position on the top of the mortar tank away from the mixing fan.

[0049] The above-mentioned method is applied to the mortar tank liquid level height monitoring scenario, but it is not limited to the above scenario. The measuring device can be applied to the real-time monitoring of any liquid level height.

[0050] The mortar liquid level height monitoring device of the embodiment of the present application is small in size, easy to install and maintain, greatly improving the maintainability and reliability of the device, as well as its adaptability to different types of shield machines and narrow spaces, and laying an important foundation for achieving real-time monitoring of the liquid level height of the mortar tank of the shield machine.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application, which should be included in the scope of the technical solution for protection in the present application.

Claims

1. A mortar level monitoring device for a mortar tank of a shield machine, characterized in that: The invention comprises a monitoring component (10), wherein the monitoring component (10) comprises: A housing (11) having an inner cavity; a transparent window (14) disposed at the bottom end of the housing (11); and A laser rangefinder (12) is arranged in the inner cavity of the housing (11) and comprises a laser transmitter and a receiver, wherein the laser transmitter transmits laser light to the mortar liquid surface through the transparent window (14), and the receiver receives reflected laser light.

2. The mortar liquid level monitoring device according to claim 1, characterized in that: The monitoring component (10) is fixedly arranged above the mortar tank of the shield machine.

3. The mortar liquid level monitoring device according to claim 1, characterized in that: The bottom end of the housing (11) has an opening, and the transparent window (14) comprises a transparent lens arranged at the opening.

4. The mortar level monitoring device according to claim 1, characterized in that: The monitoring component (10) further comprises a protective cover (16) which is arranged on the outside of the transparent window (14).

5. The mortar liquid level monitoring device according to claim 1, characterized in that: The housing (11) comprises a housing body (111) and a cover body (112) detachably arranged on the housing body (111); the cover body (112) covers the opening of the housing body (111) to enclose and form an inner cavity.

6. The mortar level monitoring device according to claim 5, characterized in that: The cover body (112) is connected to the shell body (111) via a plurality of bolts (18).

7. The mortar liquid level monitoring device according to claim 1, characterized in that: The monitoring component (10) further comprises a data acquisition board (17) electrically connected to the laser rangefinder (12), wherein the data acquisition board (17) is used to receive and process distance measurement data from the laser rangefinder (12).

8. The mortar level monitoring device according to claim 1, characterized in that: The monitoring component (10) further comprises a mounting portion (19), wherein the mounting portion (19) is connected to the outside of the side wall of the housing (11), and the mounting portion (19) is used to be mounted on a fixture (30) located outside the mortar tank of the shield machine to fix the monitoring component (10).

9. The mortar liquid level monitoring device according to claim 1, characterized in that: The mortar liquid level monitoring device comprises a plurality of monitoring components (10), and the plurality of monitoring components (10) are used to measure the liquid level at different positions of the mortar liquid surface.

10. The mortar liquid level monitoring device according to claim 1, characterized in that: The emitting direction of the laser of the laser emitter is perpendicular to the mortar liquid surface; or, the emitting direction of the laser of the laser emitter is inclined relative to the mortar liquid surface.

11. A shield machine, comprising a shield machine body, a shield locomotive, a grouting part, a mortar tank and a mortar liquid level height monitoring device as described in any one of claims 1 to 10, wherein the mortar liquid level height monitoring device is used to monitor the liquid level of the mortar liquid surface in the mortar tank, the shield locomotive is fluidly connected to the mortar tank to replenish the mortar tank with mortar, the grouting part is fluidly connected to the mortar tank to transport the mortar to the grouting part for grouting operation, and when the mortar liquid level height monitoring device monitors that the liquid level of the mortar liquid surface in the mortar tank is lower than a set value, the shield locomotive replenishes the transported mud slurry into the mortar tank.

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