Cutter head wireless vibration sensor protection device

Abstract

The utility model discloses a cutter head wireless vibration sensor protection device, which comprises a base provided with an upper end face, the upper end face is provided with a raised mounting table, the peripheral contour of the mounting table is smaller than the edge of the upper end face, a distance is reserved between the mounting table and the edge of the upper end face, and the upper end face of the mounting table is provided with a mounting structure for mounting a vibration sensor; the sealing cover is provided with a sealing cavity with an opening in the lower end, the lower end face of the sealing cover is attached to the upper end face of the base, the mounting table is embedded into the sealing cavity, and the mounting table is fixedly connected with the peripheral wall of the sealing cover through fasteners; and the first sealing ring is clamped between the peripheral side of the upper end of the mounting table and the peripheral wall of the sealing cavity and is positioned above the fastener. According to the utility model, through the design of the base and the sealing cover, a sealed environment with a stable structure is provided and is used for installing and protecting the vibration sensor. The design can effectively prevent the sensor from being damaged by falling of rock slag and water seepage, so that the service life of the sensor is prolonged, and the reliability of the sensor in a severe environment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines (TBMs), and particularly to a protection device for a wireless vibration sensor of a cutter head. Background Art

[0002] With the continuous development of the economy, the scale of underground space development is increasing. In tunnel construction in fields such as municipal engineering, water conservancy, and mining, large-scale and clustered construction is becoming more and more common, and tunnel construction under special working conditions is also increasing. Tunnel boring equipment needs to test the vibration signals of the key component - the cutter head to judge the equipment performance or the geological conditions of the rock mass ahead, so as to adjust the boring parameters and fault diagnosis in time. During tunnel boring, the rock slag generated by the cutter head excavation is likely to fall, collide and impact, which can easily cause abnormal damage to the installed vibration sensor. Moreover, in sections with high water seepage, the vibration sensor is also prone to water ingress, resulting in damage. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a protection device for a wireless vibration sensor of a cutter head, which can effectively protect the vibration sensor and improve the waterproof performance.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A protection device for a wireless vibration sensor of a cutter head includes: a base having an upper end face, on which a raised mounting platform is provided. The outer peripheral contour of the mounting platform is smaller than the edge of the upper end face and has a spacing from the edge of the upper end face. The upper end face of the mounting platform is provided with a mounting structure for mounting the vibration sensor; a sealing cover having a sealed cavity with a lower opening. The lower end face of the sealing cover is attached to the upper end face of the base. The mounting platform is embedded in the sealed cavity, and the mounting platform and the peripheral wall of the sealing cover are fixedly connected by fasteners; a first sealing ring is clamped between the peripheral side of the upper end of the mounting platform and the peripheral wall of the sealed cavity, and is located above the fasteners. This protection device for a wireless vibration sensor of a cutter head provides a structurally stable and sealed environment for mounting and protecting the vibration sensor through the design of the base and the sealing cover. This design can effectively prevent damage to the sensor caused by rock slag falling and water seepage, thereby extending the service life of the sensor and ensuring its reliability in harsh environments.

[0006] Further, the mounting structure is two mounting grooves provided on the upper end face of the mounting platform, and concave positions are provided on the side walls of the two mounting grooves. The vibration sensor is fixed through the two mounting grooves, and the design of the concave positions increases the mounting stability and reduces the risk of sensor displacement in a high-vibration environment.

[0007] Further, a connection hole is provided on the peripheral wall of the sealing cover, and a groove corresponding to the connection hole is provided on the peripheral wall of the mounting table. The fastener passes through the connection hole and is embedded in the groove.

[0008] Further, the connection hole is a threaded hole, and the fastener is a screw threadedly connected to the threaded hole. This threaded connection provides a reliable fastening effect and ensures a tight combination between the sealing cover and the base.

[0009] Further, an inclined surface that slopes downward from the outside to the inside is provided on the top wall of the groove, and the end of the screw abuts against the inclined surface.

[0010] Further, multiple groups of the connection holes and screws are circumferentially distributed.

[0011] Further, a second sealing ring is further included, which is disposed around the outer periphery of the mounting table and is clamped between the lower end surface of the sealing cover and the upper end surface of the base.

[0012] Further, both the first sealing ring and the second sealing ring are made of rubber material.

[0013] Further, an annular recess is provided on the peripheral side of the upper end of the mounting table, and a step surface is formed at the bottom of the annular recess; the first sealing ring is disposed around the side wall of the annular recess, and the bottom of the first sealing ring is in contact with the step surface. This provides a stable installation position for the first sealing ring, ensuring that the sealing ring does not shift during installation and use, thus guaranteeing the sealing effect.

[0014] Further, a welding chamfer is provided at the bottom edge of the base.

[0015] The utility model has the following beneficial effects:

[0016] The vibration sensor is covered by the sealing cover to avoid being damaged by rock debris impact, and the installation structure facilitates the installation of the vibration sensor; the mounting table is embedded in the sealing cavity to achieve the positioning installation of the sealing cover. The first sealing ring is clamped between the peripheral side of the upper end of the mounting table and the peripheral wall of the sealing cavity, providing a sealing effect on the sealing cavity. Moreover, the first sealing ring is located above the fastener, effectively preventing water from entering the sealing cavity through the fastener, further improving the waterproof effect; it can effectively protect the vibration sensor and improve the waterproof performance.

[0017] In addition to the purposes, features, and advantages described above, the utility model has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of the utility model. Description of the Drawings

[0018] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is Figure 1 a cross-sectional view of

[0021] Figure 3 is Figure 2 an enlarged view of part A of

[0022] Figure 4 is a schematic diagram of the structure of the present utility model in a disassembled state;

[0023] Figure 5 is a schematic diagram of the structure of the base.

[0024] Legend description:

[0025] Base 100, upper end face 110, mounting table 120, annular relief 121, stepped surface 122, mounting groove 123, concave position 124, embedding groove 125, inclined surface 126, welding chamfer 130, screw 140;

[0026] Sealing cover 200, sealing cavity 210, connection hole 220;

[0027] First sealing ring 300;

[0028] Second sealing ring 400. Specific embodiments

[0029] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] Please refer to Figure 1 and Figure 2 , a cutter head wireless vibration sensor protection device in a preferred embodiment provided by the present utility model includes a base 100, a sealing cover 200 and a first sealing ring 300.

[0034] The base 100 has an upper end surface 110. The upper end surface 110 is provided with a raised mounting platform 120. The outer peripheral contour of the mounting platform 120 is smaller than the edge of the upper end surface 110 and has a spacing from the edge of the upper end surface 110. Specifically, the outer peripheral contour of the mounting platform 120 is equidistantly arranged with the edge contour of the upper end surface 110. The upper end surface of the mounting platform 120 is provided with a mounting structure for mounting the vibration sensor.

[0035] The sealing cover 200 has a sealing cavity 210 with a lower end opening. The lower end surface of the sealing cover 200 is attached to the upper end surface 110 of the base 100. The mounting platform 120 is embedded in the sealing cavity 210. It can be understood that the cross-sectional contour of the mounting platform 120 is adapted to the cross-sectional contour of the sealing cavity 210, thereby reducing the mounting gap and achieving the effect of positioning and mounting.

[0036] The mounting platform 120 and the peripheral wall of the sealing cover 200 are fixedly connected by fasteners. The first sealing ring 300 is clamped between the upper peripheral side of the mounting platform 120 and the peripheral wall of the sealing cavity 210, and the first sealing ring 300 is located above the fasteners.

[0037] A protection device for a wireless vibration sensor of a cutter head provided by the present utility model uses a sealing cover 200 to cover the vibration sensor to avoid being damaged by impact of rock debris, and the installation structure facilitates the installation of the vibration sensor; the positioning installation of the sealing cover 200 can be realized by embedding the installation table 120 into the sealing cavity 210, and the first sealing ring 300 is clamped between the peripheral side of the upper end of the installation table 120 and the peripheral wall of the sealing cavity 210, which has a sealing effect on the sealing cavity 210, and the first sealing ring 300 is located above the fastener, effectively preventing water from entering the sealing cavity 210 from the fastener and further improving the waterproof effect; it can effectively protect the vibration sensor and improve the waterproof performance. Through the design of the base 100 and the sealing cover 200, a structurally stable and sealed environment is provided for installing and protecting the vibration sensor, which can effectively prevent damage to the sensor caused by the falling of rock debris and water seepage, thereby prolonging the service life of the sensor and ensuring its reliability in harsh environments.

[0038] Please refer to Figure 2 and Figure 5 , in some embodiments of the present utility model, the installation structure is two installation grooves 123 provided on the upper end surface of the installation table 120. It can be understood that a mounting seat is provided at the bottom of the vibration sensor, and the mounting seat is provided with positioning strips adapted to the installation grooves 123. The two installation grooves 123 can realize the multi-position installation and positioning of the vibration sensor. Inner concave positions 124 are provided on the side walls of the two installation grooves 123, so as to achieve the vertical positioning effect on the vibration sensor. In this way, the installation grooves 123 not only play a horizontal positioning role, but also play a vertical positioning role to achieve multiple positioning. The longitudinal positioning of the vibration sensor is achieved by the vibration sensor being in contact with the end wall of the installation groove 123 and being fixed by fasteners, so as to realize the positioning installation of the vibration sensor.

[0039] Please refer to Figure 3 and Figure 4 , in some embodiments of the present utility model, connection holes 220 are provided on the peripheral wall of the sealing cover 200, and embedding grooves 125 corresponding to the connection holes 220 are provided on the peripheral wall of the installation table 120. The fasteners pass through the connection holes 220 and are embedded in the embedding grooves 125, so as to install and fix the sealing cover 200.

[0040] Please refer to Figure 3 and Figure 4 , in a further embodiment of the present utility model, the connection holes 220 are threaded holes, and the fasteners are screws 140 threadedly connected to the threaded holes, which facilitates disassembly to open the sealing cover 200 to realize the maintenance or disassembly and assembly of the vibration sensor. And when disassembling, the screw 140 does not need to be separated from the connection hole 220, only needs to be screwed out of the embedding groove 125, and the installation and disassembly are more convenient.

[0041] Please refer to Figure 3 and Figure 5, in a further embodiment of the present utility model, the top wall of the slot 125 is provided with an inclined surface 126 that slopes downward from the outside to the inside. The end of the screw 140 abuts against the inclined surface 126. Thus, as the screw 140 is tightened, the screw 140 tightly abuts against the inclined surface 126, driving the sealing cover 200 to closely adhere to the upper end surface 110 downward, achieving installation pre-tightening and improving the sealing effect.

[0042] In a specific embodiment of the present utility model, there are multiple groups of connection holes 220 and screws 140 distributed circumferentially, thereby achieving multi-position limit fixation and improving the connection stability of the sealing cover 200. As Figure 5 shown, the slot 125 is an annular slot, surrounding the mounting table 120 for one week.

[0043] Of course, in some other embodiments, the slot 125 may not be annularly extended, but multiple slots 125 are distributed circumferentially to correspond to multiple connection holes 220 and screws 140.

[0044] Refer to Figure 3 and Figure 4 , in a further embodiment of the present utility model, it further includes a second sealing ring 400. The second sealing ring 400 is disposed around the outer periphery of the mounting table 120, and the second sealing ring 400 is clamped between the lower end surface of the sealing cover 200 and the upper end surface 110 of the base 100, thereby further improving the sealing performance.

[0045] In a specific embodiment of the present utility model, both the first sealing ring 300 and the second sealing ring 400 are made of rubber material to have better elastic deformation ability, achieve elastic pre-tightening sealing, and improve the sealing effect.

[0046] Please refer to Figures 3 to 5 , in a further embodiment of the present utility model, in a specific embodiment of the present utility model, the upper circumferential side of the mounting table 120 is provided with an annular recess 121 and a stepped surface 122 is formed at the bottom of the annular recess 121; that is, an annular recess 121 is formed by circumferentially cutting a circle on the upper circumferential side of the mounting table 120 for installing the first sealing ring 300. The first sealing ring 300 is disposed around the side wall of the annular recess 121, and the bottom of the first sealing ring 300 is in contact with the stepped surface 122. The stepped surface 122 then plays a role of supporting and vertically limiting the first sealing ring 300. As Figure 3 shown, in order to limit the upward movement of the first sealing ring 300, the circumferential wall of the sealing cavity 210 is provided with a limiting protrusion 230 to press the first sealing ring 300.

[0047] In a further embodiment of the present utility model, the bottom edge of the base 100 is provided with a welding chamfer 130 to facilitate welding the base 100 to the tool holder, and the chamfer 130 forms a weld seam to facilitate filling the solder and improve the welding effect.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cutter head wireless vibration sensor protection device, characterized in that: include: A base (100) having an upper end surface (110), the upper end surface (110) being provided with a raised mounting platform (120), the outer peripheral contour of the mounting platform (120) being smaller than the edge of the upper end surface (110) and being spaced apart from the edge of the upper end surface (110), and the upper end surface of the mounting platform (120) being provided with a mounting structure for mounting a vibration sensor; The sealing cover (200) has a sealing cavity (210) with an opening at the lower end, the lower end surface of the sealing cover (200) is in contact with the upper end surface (110) of the base (100), the mounting platform (120) is embedded in the sealing cavity (210), and the mounting platform (120) is connected and fixed to the peripheral wall of the sealing cover (200) by fasteners; The first sealing ring (300) is sandwiched between the upper peripheral side of the mounting platform (120) and the peripheral wall of the sealing cavity (210), and is located above the fastener.

2. The cutter head wireless vibration sensor protection device according to claim 1, characterized in that: The mounting structure is two mounting grooves (123) arranged on the upper end surface of the mounting platform (120), and the side walls of the two mounting grooves (123) are both provided with inner recesses (124).

3. The cutter head wireless vibration sensor protection device according to claim 1, characterized in that: The sealing cover (200) is provided with a connection hole (220) on its peripheral wall, the mounting platform (120) is provided with an embedding groove (125) corresponding to the connection hole (220), and the fastener penetrates the connection hole (220) and embeds into the embedding groove (125).

4. The cutter head wireless vibration sensor protection device according to claim 3 is characterized in that: The connection hole (220) is a threaded hole, and the fastener is a screw (140) threadedly connected to the threaded hole.

5. The cutter head wireless vibration sensor protection device according to claim 4, characterized in that: The top wall of the embedding groove (125) is provided with an inclined surface (126) which slopes downward from the outside to the inside, and the end of the screw (140) abuts against the inclined surface (126).

6. The cutter head wireless vibration sensor protection device according to claim 5, characterized in that: The connection holes (220) and the screws (140) are distributed in multiple groups in the circumferential direction.

7. The cutter head wireless vibration sensor protection device according to claim 1, characterized in that: It also includes a second sealing ring (400) which is arranged around the outer periphery of the mounting platform (120) and is sandwiched between the lower end surface of the sealing cover (200) and the upper end surface (110) of the base (100).

8. The cutter head wireless vibration sensor protection device according to claim 7, characterized in that: The first sealing ring (300) and the second sealing ring (400) are both made of rubber material.

9. The cutter head wireless vibration sensor protection device according to claim 1, characterized in that: An annular clearance (121) is provided on the circumferential side of the upper end of the mounting platform (120), and a step surface (122) is formed at the bottom of the annular clearance (121); the first sealing ring (300) is arranged around the side wall of the annular clearance (121), and the bottom of the first sealing ring (300) is in contact with the step surface (122).

10. The cutter head wireless vibration sensor protection device according to claim 1, characterized in that: The bottom edge of the base (100) is provided with a welding chamfer (130).

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