Contact type shield tail gap measuring device and heading machine

Abstract

The utility model discloses a contact type shield tail clearance measuring device and a heading machine, comprising a base body, the base body is provided with at least two different cover plates and is internally provided with an electromechanical driving element connected with a control system, and the electromechanical driving element is in transmission connection with a swing rod outside the base body through a transmission mechanism. The electromechanical drive element is equipped with a rotary encoder connected to the control system. During use, the electromechanical driving element serves as a power source, the transmission mechanism transmits the power source output by the electromechanical driving element to the swing rod, the swing rod is used for making contact with lining structures such as duct pieces on the inner side of a tail shield, the rotation angle of the electromechanical driving element of the rotary encoder can be obtained through the rotary encoder, and then the shield tail gap can be obtained according to the length of the swing rod. The electromechanical driving element and the transmission mechanism are both arranged in the base body, the base body can be connected to the inner wall of the tail shield and can also be arranged in the tail shield, and only the swing rod swings in good time to stretch out to be in contact with the lining structure, so that the lining structure has super-strong adaptive capacity and is convenient to install and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield tail gap measurement technical field, especially point to a contact type shield tail gap measurement device and heading machine. BACKGROUND

[0002] "Shield tail gap" is an important parameter to guarantee the heading posture and safe heading of the shield tunneling machine, and the current shield tail gap measurement is mainly manual, and manual measurement needs to climb the shield tunneling machine, which is difficult to guarantee the efficiency, safety and measurement quality, so it is an inevitable development trend to realize the automatic measurement of the shield tail gap.

[0003] With the progress of technology, the research on the shield tail gap automatic measurement system is more and more, such as based on the visual principle, laser ranging principle, ultrasonic wave, radar, mechanical contact type and the like, but there are certain limitations in installation, maintenance, working condition applicability and the like, and the reliability and stability of the automatic measurement of the shield tail gap are insufficient.

[0004] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as acknowledging or implying in any form that the above technical information constitutes the prior art known to those skilled in the art. SUMMARY

[0005] In view of the deficiencies in the above background technology, the utility model provides a contact type shield tail gap measurement device and heading machine to solve the following technical problems: how to improve the adaptability and installation and maintenance convenience of the shield tail gap measurement device.

[0006] The technical scheme of the utility model is as follows:

[0007] A contact type shield tail gap measurement device, comprising a base body, the base body is selected to have at least two different cover plates and is internally provided with an electromechanical driving element connected with a control system, the electromechanical driving element is drivingly connected with a swing rod outside the base body through a transmission mechanism, and the electromechanical driving element is provided with a rotary encoder connected with the control system.In use of the technical scheme, the electromechanical driving element serves as a power source, the transmission mechanism transmits the power source output by the electromechanical driving element to the swing rod, the swing rod is used to contact the lining structure such as segment inside the tail shield, the rotation angle of the rotary encoder electromechanical driving element can be obtained through the rotary encoder, and the shield tail gap can be obtained according to the length of the swing rod; since the electromechanical driving element and the transmission mechanism are arranged in the base body, and the base body is selected to have different cover plates, the base body can be connected to the inner wall of the tail shield and can be internally arranged in the tail shield, and only the swing rod is swung to contact the lining structure in time, so that the adaptability is super strong, and the installation and maintenance are convenient.

[0008] As a preferred technical scheme of the contact type shield tail gap measuring device, the transmission mechanism is a gear transmission mechanism or a synchronous belt transmission mechanism. This technical scheme is a further upgrade of the above technical scheme, and provides two preferred transmission mechanisms. Whether it is a gear transmission mechanism or a synchronous belt transmission mechanism, the miniaturization and compact layout of the transmission mechanism can be achieved, the adaptability is further improved, and the synchronization of transmission can be ensured, so that the rotation angle of the electromechanical driving element can be more accurately known to obtain the shield tail gap. Further preferably, the transmission ratio of the gear transmission mechanism and the synchronous belt transmission mechanism is 1.

[0009] As a preferred technical scheme of the contact type shield tail gap measuring device, the gear transmission mechanism comprises a flange, a transmission shaft one, a first main driving wheel, a first driven wheel, and a transmission shaft two connected in sequence between the electromechanical driving element and the swing rod. The first main driving wheel and the first driven wheel are bevel gears. This technical scheme gives a preferred gear transmission mechanism. The power of the output shaft of the electromechanical driving element is synchronously output to the transmission shaft one through the flange, the transmission shaft one synchronously drives the first main driving wheel to rotate, the first main driving wheel synchronously drives the first driven wheel to rotate, and the first driven wheel synchronously drives the transmission shaft two to rotate. Finally, the transmission shaft two synchronously drives the swing rod to swing. The first main driving wheel and the first driven wheel are bevel gears, which can flexibly layout the transmission mechanism, effectively improve the space utilization, and further realize the miniaturization of the entire device.

[0010] As a preferred technical scheme of the contact type shield tail gap measuring device, the base body is provided with a first ear seat and a second ear seat for fixing the electromechanical driving element, a first support base for supporting the transmission shaft one and the transmission shaft two, and a second support seat for supporting the transmission shaft two. This technical scheme is a further optimization of the above technical scheme, which not only gives the support mechanism of the electromechanical driving element, the transmission shaft one and the transmission shaft two, but also uses the same first support base for the transmission shaft one and the transmission shaft two. The transmission shaft two is supported by the first support base, the second support seat and the hole on the outer wall of the base body at the same time, which can improve the reliability of the support, improve the assembly precision of the transmission mechanism, and is convenient for assembly and maintenance. Further preferably, bearings are arranged at positions for supporting the transmission shaft one and the transmission shaft two.

[0011] On the basis of the above technical scheme, as the preferred technical scheme of the contact type shield tail gap measuring device, the synchronous belt transmission mechanism comprises a flange, a second main driving wheel, a synchronous transmission belt, a second driven wheel and a transmission shaft two which are sequentially connected between the electromechanical driving element and the swing rod. The present technical scheme gives a preferred synchronous belt transmission mechanism, the power of the output shaft of the electromechanical driving element is directly and synchronously output to the second main driving wheel through the flange, the second main driving wheel synchronously drives the second driven wheel through the synchronous transmission belt, the second driven wheel synchronously drives the transmission shaft two to rotate, and finally the transmission shaft two drives the swing rod to synchronously swing.

[0012] On the basis of the above technical scheme, as the preferred technical scheme of the contact type shield tail gap measuring device, the third and fourth ear seats are arranged in the base body for fixing the electromechanical driving element, and the support seat is arranged for supporting the transmission shaft two, and the second driven wheel is arranged on the transmission shaft two. The support seat and the hole in the base body for the transmission shaft two to pass through jointly support the transmission shaft two. Further preferably, bearings cooperating with the second main driving wheel are arranged on the side wall of the base body, and bearings cooperating with the transmission shaft two are arranged on the support seat and the side wall of the base body.

[0013] On the basis of the above technical scheme, as the preferred technical scheme of the contact type shield tail gap measuring device, the outer side of the base body is provided with first and second stop blocks for limiting the rotation of the swing rod within the range of 0°-90°.

[0014] On the basis of the above technical scheme, as the preferred technical scheme of the contact type shield tail gap measuring device, the control system is connected with the electromechanical driving element through the power supply module, the communication module and the circuit board in the base body.

[0015] On the basis of the above technical scheme, as the preferred technical scheme of the contact type shield tail gap measuring device, the base body is provided with a wire outlet hole, the cover plate is a first cover plate covering the swing rod or a second cover plate covering only the base body, and the first cover plate is provided with a clearance slot for the swing rod to swing.

[0016] A tunneling machine comprises a shield body and a matching device connected with the shield body, the inner side of the tail shield of the shield body is provided with a plurality of contact type shield tail gap measuring devices according to any one of the claims, and the base body is embedded in the tail shield or externally arranged on the inner wall of the tail shield through an external mounting base.

[0017] The utility model provides a kind of contact type shield tail gap measuring device and heading machine, compared with prior art, first solve the problem of weak adaptability of measurement device or part contact type measurement device based on vision, ultrasonic wave, laser etc. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the utility model embodiments, the following will be needed to use the drawings in the embodiment description briefly introduced, obviously, the following description in the drawings only some embodiments of the utility model, for those skilled in the art, without creative labor, according to these drawings, other drawings can also be obtained.

[0019] Figure 1 It is the schematic view of contact type shield tail gap measuring device embedded implementation mode;

[0020] Figure 2 It is the schematic view of contact type shield tail gap measuring device after omitting cover plate;

[0021] Figure 3 It is the schematic view of contact type shield tail gap measuring device in Figure 1 Before installation;

[0022] Figure 4 It is the schematic view of contact type shield tail gap measuring device in Figure 1 After installation;

[0023] Figure 5 It is the schematic view of contact type shield tail gap measuring device external implementation mode;

[0024] Figure 6 It is the schematic view of contact type shield tail gap measuring device in Figure 5 After omitting external installation base;

[0025] Figure 7 System communication scheme schematic view;

[0026] Figure 8 It is the sectional view when the structure shown in Figure 4 Is applied;

[0027] Figure 9 It is the sectional view when the structure shown in Figure 5 Is applied;

[0028] Figure 10 A cross-sectional view of the tail shield of the tunneling machine provided by the present application;

[0029] Figure 11 A schematic view of another embodiment of the transmission mechanism;

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1. Contact type shield tail gap measuring device; 2. Tail shield; 3. Segment; 4. External mounting base; 5. Electrical control box; 6. Industrial computer;

[0032] 1-1. Base body; 1-1-1. Wire outlet hole; 1-2. Swing lever; 1-3. First stop block; 1-4. First cover plate; 1-5. Second stop block; 1-6. First transmission shaft; 1-7. Circuit board; 1-8. Electromechanical drive element;

[0033] 1-9. First ear seat; 1-10. Second ear seat; 1-11. First transmission flange; 1-12. Second transmission flange; 1-13. First main drive wheel; 1-14. First driven wheel; 1-15. First support base; 1-16. Second support base;

[0034] 1-17. Second cover plate; 1-18. Third ear seat; 1-19. Fourth ear seat; 1-20. Second main drive wheel; 1-21. Synchronous transmission belt; 1-22. Second driven wheel; 5-1. Power module; 5-2. Communication module. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the core idea of the present application and the following embodiments, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0037] It should be noted that in the description of the present application, unless otherwise specified and limited, the meaning of "several" is greater than or equal to two; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] In addition, "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0039] It should also be noted that in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanical connection, or electrical connection; It can be directly connected, or indirectly connected through an intermediate medium; It can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0040] All terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or extremely formalized sense, unless specifically defined here.

[0041] Techniques, methods and equipment known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the specification.

[0042] A contact type shield tail gap measuring device, such as Figure 1 、 Figure 2 、 Figure 5 and Figure 11As shown, it comprises a base body 1-1, the base body 1-1 is matched with at least two different cover plates and is internally provided with an electromechanical driving element 1-8 connected with a control system, the electromechanical driving element 1-8 is in transmission connection with a swing rod 1-2 outside the base body 1-1 through a transmission mechanism, and the electromechanical driving element 1-8 is provided with a rotary encoder connected with the control system.

[0043] It should be noted that the signal lines and / or power lines for internal and external transmission in the whole device can be arranged through the gap between the cover plate and the base body 1-1, or the corresponding through holes can be provided on the cover plate, and the outlet holes 1-1-1 can also be provided on the mounting base 1-1.

[0044] It should be particularly noted that the electromechanical driving element 1-8 can be an open-loop actuator or a servo actuator. Due to the limited space and the fact that the electromechanical driving element 1-8 is not the core technical feature of the present application, it is not necessary to exhaust all possibilities, and the present embodiment is only exemplary. For example, the open-loop actuator can adopt a stepper motor, a direct current motor, etc., and the servo actuator can adopt a servo motor (continuous rotation type), a rudder (angle limited type), etc.

[0045] When the present embodiment is used, the electromechanical driving element 1-8 serves as a power source, the transmission mechanism transmits the power source output by the electromechanical driving element 1-8 to the swing rod 1-2, the swing rod 1-2 is used to contact the lining structure such as the segment 3 inside the tail shield, the rotation angle of the rotary encoder electromechanical driving element 1-8 can be obtained through the rotary encoder, and the tail shield gap can be obtained according to the length of the swing rod 1-2; since the electromechanical driving element 1-8 and the transmission mechanism are both arranged in the base body 1-1, the base body 1-1 can be connected to the inner wall of the tail shield 2 or built-in in the tail shield 2, and only the swing rod 1-2 is timely swung to contact the lining structure, so it has strong adaptability and is convenient to install and maintain.

[0046] On the basis of the above-mentioned embodiments, as a preferred embodiment of the contact type tail shield gap measuring device, the transmission mechanism is a gear transmission mechanism or a synchronous belt transmission mechanism. Compared with the gear transmission mechanism, the synchronous belt transmission mechanism can also achieve power transmission function, although it can withstand weaker transmission torque, and has more flexible layout and simpler structure.

[0047] The present embodiment is a further upgrade of the above-mentioned embodiments, which provides two preferred transmission mechanisms. Whether it is a gear transmission mechanism or a synchronous belt transmission mechanism, both can realize the miniaturization and compact layout of the transmission mechanism, further improve the adaptability and ensure the synchronization of transmission, and thus the tail shield gap can be more accurately obtained through the rotation angle of the electromechanical driving element 1-8. Further preferably, the transmission ratio of the gear transmission mechanism and the synchronous belt transmission mechanism is 1.

[0048] On the basis of the above-mentioned embodiments, as a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figure 2 The gear transmission mechanism comprises, in sequence, a flange, a first transmission shaft, a first main drive wheel 1-13, a first driven wheel 1-14, and a second transmission shaft 1-6, which are connected between the electromechanical driving element 1-8 and the swing rod 1-2. The first main drive wheel 1-13 and the first driven wheel 1-14 are bevel gears.

[0049] The present embodiment provides a preferred gear transmission mechanism. The power of the output shaft of the electromechanical driving element 1-8 is synchronously output to the first transmission shaft through the flange. The first transmission shaft synchronously drives the first main drive wheel 1-13 to rotate. The first main drive wheel 1-13 in turn drives the first driven wheel 1-14 to synchronously rotate. The first driven wheel 1-14 drives the second transmission shaft 1-6 to synchronously rotate. Finally, the second transmission shaft 1-6 drives the swing rod 1-2 to synchronously swing. The first main drive wheel 1-13 and the first driven wheel 1-14 are bevel gears. The transmission mechanism can be flexibly arranged, the space utilization is effectively improved, and the miniaturization of the entire device is further realized.

[0050] On the basis of the above-mentioned embodiments, as a preferred embodiment of the contact type shield tail gap measuring device, the base body 1-1 is provided with a first ear seat 1-9 and a second ear seat 1-10 for fixing the electromechanical driving element 1-8, a first support base 1-15 for supporting the first transmission shaft and the second transmission shaft 1-6, and a second support seat 1-16 for supporting the second transmission shaft 1-6.

[0051] The present embodiment is a further optimization of the above-mentioned embodiments. Not only is the support mechanism of the electromechanical driving element 1-8, the first transmission shaft, and the second transmission shaft 1-6 provided, but also the first transmission shaft and the second transmission shaft 1-6 adopt the same first support base 1-15. The second transmission shaft 1-6 is supported by the first support base 1-15, the second support seat 1-16, and the hole on the outer wall of the base body 1-1. This can not only improve the reliability of the support, but also improve the assembly precision of the transmission mechanism, and is convenient for assembly and maintenance. Further preferably, bearings are arranged at the positions for supporting the first transmission shaft and the second transmission shaft 1-6.

[0052] On the basis of the above-mentioned embodiments, as a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figure 11 The synchronous belt transmission mechanism comprises, in sequence, a flange, a second main drive wheel 1-20, a synchronous transmission belt 1-21, a second driven wheel 1-22, and a second transmission shaft 1-6, which are connected between the electromechanical driving element 1-8 and the swing rod 1-2.

[0053] The embodiment gives a preferred synchronous belt transmission mechanism, the power of the output shaft of the electromechanical drive element 1-8 is directly synchronized and output to the second main driving force wheel 1-20 through the flange, the second main driving force wheel 1-20 synchronously drives the second driven wheel 1-22 through the synchronous transmission belt 1-21, the second driven wheel 1-22 synchronously drives the transmission shaft two 1-6 to rotate, and finally the transmission shaft two 1-6 drives the swing rod 1-2 to swing synchronously.

[0054] On the basis of the above-mentioned embodiment, as a preferred embodiment of the contact type shield tail gap measuring device, the third lug 1-18 and the fourth lug 1-19 for fixing the electromechanical drive element 1-8 and the support seat for supporting the transmission shaft two 1-6 are arranged in the base body 1-1, the second driven wheel 1-22 is arranged on the transmission shaft two 1-6, and the support seat and the hole for the transmission shaft two 1-6 to pass out of the base body 1-1 together support the transmission shaft two 1-6. Further preferably, bearings cooperating with the second main driving force wheel 1-20 are arranged on the side wall of the base body 1-1, and bearings cooperating with the transmission shaft two 1-6 are arranged on the support seat and the side wall of the base body 1-1.

[0055] On the basis of the above-mentioned embodiment, as a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figure 2 、 Figure 5 and Figure 11 , the outer side of the base body 1-1 is provided with the first stop block 1-3 and the second stop block 1-5 for limiting the rotation of the swing rod 1-2 within the range of 0°-90°.

[0056] On the basis of the above-mentioned embodiment, as a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figure 7 , the control system is connected with the electromechanical drive element 1-8 through the electric control box 5 and the circuit board 1-7 in the base body 1-1, and the electric control box 5 includes a power module 5-1 and a communication module 5-2.

[0057] On the basis of the above-mentioned embodiment, as a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the base body 1-1 is provided with a wire outlet hole 1-1-1, the cover plate is the first cover plate 1-4 covering the swing rod 1-2 or the second cover plate 1-17 covering only the base body 1-1, and the first cover plate 1-4 is provided with a gap slot 1-2-1 for the swing rod 1-2 to swing.

[0058] As a preferred embodiment of the contact type shield tail gap measuring device, as shown in Figures 1-11As shown, it is provided with base body 1-1, swing rod 1-2, first stopper 1-3, first cover plate 1-4, second stopper 1-5, first transmission shaft 1-6, circuit board 1-7, electromechanical drive element 1-8, first lug seat 1-9, second lug seat 1-10, first transmission flange 1-11, second transmission flange 1-12, first main drive wheel 1-13, first driven wheel 1-14, first support base 1-15, second support base 1-16, second cover plate 1-17.

[0059] Among them, the base body 1-1 is the structural basis of the whole measuring device; the circuit board 1-7 is fixed inside the base body 1-1 by screws, mainly responsible for collecting the state data of the electromechanical drive element 1-8, and transmitting the results to the industrial computer 6 through the communication module 5-2 in the electric control box 5; the electromechanical drive element 1-8 is powered by the power supply module 5-1 in the electric control box, which can provide rotary power for the swing rod 1-2, and also has an angle measurement function, realizing the measurement of the rotation angle of the swing rod 1-2, and the electromechanical drive element 1-8 is fixed inside the base body 1-1 by bolt connection through the first lug seat 1-9 and the second lug seat 1-10.

[0060] As shown in Figure 2 , the electromechanical drive element 1-8 is provided with an output shaft, the output shaft is connected and fixed with the first transmission flange 1-11, the first transmission flange 1-11 is connected and fixed with the second transmission flange 1-12, the second transmission flange 1-12 is provided with an output shaft, and the shaft of the first main drive wheel 1-13 is connected and fixed, the first main drive wheel 1-13 is connected with the first driven wheel 1-14 through gear meshing, realizing transmission. Among them, the first main drive wheel 1-13 and the first driven wheel 1-14 are fixedly installed on the first support base 1-15, and bearings are arranged at the shafts; the first support base 1-15 is fixedly installed in the base body 1-1 by bolts; the first driven wheel 1-14 is connected and fixed with the first transmission shaft 1-6, and the first transmission shaft 1-6 is supported by the second support base 1-16, and bearings are arranged at the contact positions of the first transmission shaft 1-6 and the second support base 1-16; the first transmission shaft 1-6 is also supported by the base body 1-1, and bearings are arranged at the contact positions. The swing rod 1-2 is fixedly connected to one end of the first transmission shaft 1-6 and rotates synchronously with the first transmission shaft 1-6.

[0061] In the above scheme, the internal transmission is based on the direct meshing mode of the first main drive wheel 1-13 and the first driven wheel 1-14 to transmit power. As an alternative real-time scheme, under the premise that other components in the base body 1-1 remain basically unchanged, the power transmission between the drive source 1-8 and the swing rod 1-2 is replaced by the second main drive wheel 1-20, the synchronous transmission belt 1-21 and the second driven wheel 1-22, as shown in Figure 11As shown, the second drive wheel 1-20 and the synchronous conveyor belt 1-21, as well as the synchronous conveyor belt 1-21 and the second driven wheel 1-22, are all connected by gear meshing. This embodiment, compared to the previous embodiment, utilizes the synchronous conveyor belt 1-21 for power transmission, achieving the power transmission function, but its ability to withstand transmitted torque is weaker than the original embodiment.

[0062] At the same time, to prevent unnecessary rotation of the swing arm 1-2 at certain angles, such as Figure 2 , Figure 5 and Figure 11 As shown, a first stop 1-3 and a second stop 1-5 are provided, which respectively limit the rotation angle of the swing arm 1-2 in the horizontal and vertical directions. Furthermore, in order to handle complex working conditions such as mud and grease, the swing arm 1-2 adopts a double-sided V-shaped slope design to remove mud and grease during the rotation of the swing arm 1-2.

[0063] Meanwhile, the contact-type shield tail gap measuring device 1 is equipped with a first cover plate 1-4 and a second cover plate 1-17. When the base 1-1 is used in conjunction with the first cover plate 1-4, the contact-type shield tail gap measuring device 1 can be embedded in the prefabricated groove of the tail shield 2 and fixed by bolt connection. When the base 1-1 is used in conjunction with the second cover plate 1-17, it can be fixedly installed on the surface of the tail shield 2 in conjunction with the external mounting base 4. The internal installation method and the external installation method are respectively suitable for different operating conditions and conditions of the tunnel boring machine.

[0064] The contact-type shield tail gap measuring device 1 designed in this utility model, as described above, uses a monitoring program designed in the industrial control computer 6 to send instructions to the electromechanical drive element 1-8 through the communication module 5-2 and circuit board 1-7 in the electrical control box 5. The electromechanical drive element 1-8 synchronously drives the first transmission flange 1-11, the second transmission flange 1-12, the first main drive wheel 1-13, the first driven wheel 1-14, and the first transmission shaft 1-6 through its own output shaft, ultimately driving the swing arm 1-2 to rotate. The electromechanical drive element 1-8 is equipped with a rotary encoder, and the rotation angle of the swing arm 1-2 can be directly obtained from the electromechanical drive element 1-8. Under different shield tail gap distances, the swing arm 1-2 can swing within different ranges. When the swing arm 1-2 encounters an obstacle during swinging, it will automatically unload due to overload. The control system determines the conditions for the swing arm to stop swinging based on the load change pattern during the swing arm's rotation, and then calculates the shield tail gap value corresponding to different swing angles based on the swing angle of the swing arm 1-2 and the inherent length of the swing arm, thereby realizing the automated measurement of the shield tail gap.

[0065] The contact-type shield tail gap measuring device 1 designed in this utility model can be applied in multiple scenarios by replacing the cover plate, such as when a new shield machine is manufactured, or when... Figure 8As shown, the tail shield 2 surface is pre-prepared with a mounting groove of the tail shield gap measuring device 1, at this time the tail shield gap measuring device 1 can be embeddedly installed in cooperation with the first cover plate 1-4, as shown in Figure 2 and Figure 8 As shown, the tail shield 2 surface is pre-prepared with a mounting groove of the tail shield gap measuring device 1, at this time the tail shield gap measuring device 1 can be embeddedly installed in cooperation with the first cover plate 1-4, as shown in Figure 6 and Figure 9 As shown, the tail shield 2 surface is pre-prepared with a mounting groove of the tail shield gap measuring device 1, at this time the tail shield gap measuring device 1 can be embeddedly installed in cooperation with the first cover plate 1-4, as shown in Figure 9 Therefore, based on the above use method, the tail shield gap measuring device 1 of the design can be applied to the automatic measurement of the tail shield gap of multiple models of shield machines.

[0066] The tail shield gap measuring device 1 can be arranged on the surface of the tail shield 2 in the circumferential direction according to the needs of the customer, so as to realize the omnibearing real-time monitoring of the tail shield gap, as shown in Figure 10

[0067] Based on the above embodiment, the contact type tail shield gap measuring device designed in the utility model, under the premise of ensuring the realization of the basic function of tail shield gap measurement, has the advantages of small size, easy installation and maintenance, adaptation to complex working conditions and multiple scene applications, and greatly improves the reliability and generalizability of the automatic measurement system of the tail shield gap.

[0068] A tunneling machine comprises a shield body and a matched device connected with the shield body, as shown in Figure 10 The inner side of the tail shield 2 of the shield body is provided with a plurality of contact type tail shield gap measuring devices 1 described in any one of the above embodiments, the base body 1-1 is embedded in the tail shield 2, or is externally arranged on the inner wall of the tail shield 2 through the external mounting base 4. Preferably, each contact type tail shield gap measuring device 1 is arranged at intervals around the inner wall of the tail shield 2, preferably arranged at equal intervals. Further preferably, a plurality of contact type tail shield gap measuring devices 1 are arranged at intervals in a ring, and a plurality of ring contact type tail shield gap measuring devices 1 are arranged on the tail shield 2.

[0069] The utility model does not exhaust the common technical means known to those skilled in the art.

[0070] The above shows and describes the basic principle, main features and beneficial effects of the utility model. The above is only a preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.​

Claims

1. A contact-type shield tail gap measuring device, comprising a base (1-1), characterized in that: The base (1-1) is equipped with at least two different cover plates and has an electromechanical drive element (1-8) connected to the control system. The electromechanical drive element (1-8) is connected to the swing arm (1-2) outside the base (1-1) through a transmission mechanism. The electromechanical drive element (1-8) is equipped with a rotary encoder connected to the control system.

2. The contact-type shield tail gap measuring device according to claim 1, characterized in that: The transmission mechanism is a gear transmission mechanism or a synchronous belt transmission mechanism.

3. The contact-type shield tail gap measuring device according to claim 2, characterized in that: The gear transmission mechanism includes a flange, a first transmission shaft, a first main drive wheel (1-13), a first driven wheel (1-14), and a second transmission shaft (1-6) connected sequentially between the electromechanical drive element (1-8) and the rocker arm (1-2). The first main drive wheel (1-13) and the first driven wheel (1-14) are both bevel gears.

4. The contact-type shield tail gap measuring device according to claim 3, characterized in that: The base (1-1) is provided with a first ear seat (1-9) and a second ear seat (1-10) for fixing the electromechanical drive element (1-8), a first support base (1-15) for supporting the first drive shaft and the second drive shaft (1-6), and a second support seat (1-16) for supporting the second drive shaft (1-6).

5. The contact-type shield tail gap measuring device according to claim 2, characterized in that: The synchronous belt drive mechanism includes a flange, a second main drive wheel (1-20), a synchronous conveyor belt (1-21), a second driven wheel (1-22), and a second drive shaft (1-6) connected in sequence between the electromechanical drive element (1-8) and the rocker arm (1-2).

6. The contact-type shield tail gap measuring device according to claim 5, characterized in that: The base (1-1) is provided with a third ear seat (1-18) and a fourth ear seat (1-19) for fixing the electromechanical drive element (1-8), a second support seat (1-16) for supporting the second transmission shaft (1-6), and a second driven wheel (1-22) is provided on the second transmission shaft (1-6).

7. The contact-type shield tail gap measuring device according to any one of claims 3-6, characterized in that: The outer side of the base (1-1) is provided with a first stop (1-3) and a second stop (1-5) for limiting the rotation of the swing arm (1-2) within the range of 0°-90°.

8. The contact-type shield tail gap measuring device according to claim 7, characterized in that: The control system is connected to the electromechanical drive element (1-8) through the power module (5-1), the communication module (5-2), and the circuit board (1-7) in the base (1-1).

9. The contact-type shield tail gap measuring device according to any one of claims 1-6 and 8, characterized in that: The base (1-1) is provided with a wire outlet hole (1-1-1), and the cover plate is either a first cover plate (1-4) covering the swing rod (1-2) or a second cover plate (1-17) covering only the base (1-1). The first cover plate (1-4) is provided with a clearance groove for the swing rod (1-2) to swing.

10. A tunneling machine, comprising a shield body and auxiliary equipment connected to the shield body, characterized in that: The inner side of the tail shield (2) of the shield body is provided with a number of contact-type tail shield gap measuring devices as described in any one of claims 1-9; the base (1-1) is embedded in the tail shield (2) or externally mounted on the inner wall of the tail shield (2) via an external mounting base (4).

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