Wiring assembly of shield tail brush sensor outgoing line

Abstract

The utility model provides a shield tail brush sensor outgoing line wiring assembly, a sensor is arranged in a shield tail brush, an outgoing line of the sensor is fixed on a shield tail through the wiring assembly and penetrates out of the shield tail, the wiring assembly comprises a first positioning piece and a second positioning piece, the first positioning piece is fixed at the bottom of the shield tail brush and allows the outgoing line of the sensor to penetrate in, and the second positioning piece is fixed at the bottom of the shield tail brush. The second positioning piece is fixed on the shield tail, and the outgoing line penetrates into the second positioning piece and penetrates out of the tail part of the shield tail; and the first positioning piece and the second positioning piece form an electrical plug connector, so that a sensor outgoing line on the first positioning piece is electrically connected with an outgoing line on the second positioning piece. According to the utility model, the outgoing line of the shield tail brush sensor is led into the first positioning piece, the other outgoing line led out from the front end of the shield tail penetrates through the shield tail and is led into the second positioning piece, and the first positioning piece and the second positioning piece are respectively fixed on the shield tail brush and the shield tail. The electrical plug connector can be formed through simple butt joint of the first positioning piece and the second positioning piece, and the installation step of the sensor outgoing line is simplified.

Description

Technical Field

[0001] The utility model relates to a shield machine, in particular to a shield tail brush sensor. Background Art

[0002] As cross-river and sea tunnels gradually present characteristics such as "large diameter, high water pressure, and long distance", the safety of shield machines in tunnel engineering has been greatly challenged. "High water pressure and long distance" have put forward higher requirements on the shield tail seal of the shield machine, and the wear of the shield tail brush and whether it has resilience are factors that affect the performance of the shield tail seal. At present, various technologies related to the detection of the shield tail brush have been proposed, but there is currently no effective shield tail brush sensor outlet connector. Summary of the invention

[0003] Purpose of the invention: The purpose of the utility model is to address the deficiencies of the prior art and provide a wiring assembly for the shield tail brush sensor output line that is convenient for connecting the sensor output line to the external device.

[0004] Technical solution: The utility model discloses a wiring assembly for the outgoing wire of a shield tail brush sensor. A sensor is arranged inside the shield tail brush. The outgoing wire of the sensor is fixed on the shield tail through the wiring assembly and passes through the shield tail. The wiring assembly includes:

[0005] A first positioning piece, which is fixed to the bottom of the shield tail brush and is used for the sensor wire to pass through;

[0006] A second positioning member, the second positioning member is fixed on the shield tail and allows the outgoing wire to pass through and pass out from the end of the shield tail;

[0007] The first positioning member and the second positioning member constitute an electrical connector, so that the sensor output line on the first positioning member and the output line on the second positioning member are electrically connected.

[0008] Furthermore, the outgoing line is connected to the second positioning member through a wiring hole that runs through the front end and the rear end of the shield tail.

[0009] Furthermore, a sealing member is provided at the front end of the wiring hole.

[0010] Furthermore, at least one operating hole connected to the wiring hole is opened on the shield tail, and the operating hole is closed by a cover plate.

[0011] Furthermore, a mounting hole is provided on the outer end surface of the operating hole, the cover plate is fixed in the mounting hole by a first fastener, and a first sealing ring is provided between the cover plate and the mounting hole.

[0012] Furthermore, the upper portion of the first positioning member is fixed to the shield tail brush bottom plate via a second fastener, and a second sealing ring is provided between the first positioning member and the shield shell.

[0013] Furthermore, the second positioning member is installed in the installation groove of the shield shell through a third fastener, and the first positioning member and the second positioning member are arranged in the installation groove after being connected.

[0014] Furthermore, the first positioning member and the second positioning member are connected to each other via a latch structure.

[0015] Furthermore, the latch structure comprises a matching plug and socket, and an auxiliary positioning structure is provided on the mating surfaces of the plug and the socket.

[0016] Furthermore, the auxiliary positioning structure includes a positioning hole provided on the plug, and a positioning piece provided on the socket and capable of being correspondingly inserted into the positioning hole.

[0017] Beneficial effects: 1. The utility model leads the output line of the shield tail brush sensor to the first positioning piece, and another output line led from the front end of the shield tail passes through the shield tail and is led to the second positioning piece. The first positioning piece and the second positioning piece are respectively fixed on the shield tail brush and the shield tail. Therefore, during installation, an electrical connector can be formed by simply docking the first positioning piece and the second positioning piece, which simplifies the installation steps of the sensor output line; in addition, by sealing the installation parts of the first positioning piece and the second positioning piece, the shield tail grease between the front and rear shield tail brushes can be prevented from leaking through the wiring hole; when the sensor fails and needs to be replaced, there is no need to pull out the output line from the shield tail for overall replacement. It is only necessary to take out the first positioning piece for inspection and replacement, which further reduces the maintenance cost on the basis of improving the sealing performance;

[0018] 2. A sealing member can be further provided at the lead-out portion at the front end of the shield tail. When leakage occurs in the first positioning member and the second positioning member, the sealing means at this portion can effectively prevent the shield tail grease from leaking through the wiring hole, thereby facilitating the replacement, overhaul and re-sealing of the shield tail brush sensor, and making replacement convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall installation of the wiring assembly of the utility model on the shield tail;

[0020] Figure 2 It is a partial enlarged schematic diagram of the wiring assembly;

[0021] Figure 3 is a schematic top view of a first positioning member;

[0022] Figure 4 is a side view schematic diagram of a first positioning member;

[0023] Figure 5 is a schematic top view of a second positioning member;

[0024] Figure 6is a side view schematic diagram of a second positioning member;

[0025] Figure 7 is a top view schematic diagram of the cover plate;

[0026] Figure 8 This is a top view of the shield tail brush.

[0027] In the figure: 1-outlet, 2-ball valve, 3-connector, 4-wiring hole, 5-first fastener, 6-first sealing ring, 7-cover plate, 8-operating hole, 9-first threaded hole, 10-sensor outlet, 11-shield brush, 12-shield brush bottom groove, 13-second fastener, 14-second sealing ring, 15-first positioning member, 16-second positioning member, 17-first countersunk hole, 18-first sealing ring groove, 19-matching hole, 20-second sealing ring groove, 21-second threaded hole, 22-positioning hole, 23-positioning pin, 24-second countersunk hole, 25-third fastener, 26-positioning member, 27-convex positioning hole, 28-through hole, 29-convex part, 30-third threaded hole, 31-sensor outlet hole. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is described in detail below with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0029] A sensor may be provided inside the shield tail brush 11 of the shield machine, and the sensor is used to detect the wear of the shield tail brush or detect other related states of the shield tail brush. Generally, a plurality of shield tail brushes 11 are provided on the axial direction of the shield tail. If the output line of the sensor on each shield tail brush 11 is directly led out from the internal opening of the shield tail to the outside, and connected to an external device (such as a host computer) without any protective measures, it will cause an accident in which the grease of the shield tail leaks out. Therefore, generally, glue is poured and sealed in the opening of the shield tail to prevent the grease of the shield tail from leaking to the outside. If all sensor output lines 10 are passed through the inside of the shield tail and a glue-filled sealing protection form is adopted, when the sensor is damaged and needs to be replaced, the sensor cannot be replaced due to the glue-filling inside the opening of the shield tail, making the original detection measures invalid.

[0030] Based on this, this embodiment provides a wiring assembly for the output line of the shield tail brush sensor. The output line of the sensor is inserted into the fixed position of the shield tail through the docking assembly, and docked with the output line 1, and finally the output line 1 is passed out from the front end of the shield tail. The docking assembly includes a first positioning member 15 and a second positioning member 16. The first positioning member 15 and the second positioning member 16 can be connected and arranged in the mounting groove of the shield tail to make the sensor output line 10 dock with the output line 1; wherein, the first positioning member 15 is fixed at the bottom of the shield tail brush 11, and the sensor output line 10 is inserted; a second positioning member is provided on the shield tail corresponding to the position of the first positioning member 15, and the output line 1 is passed through. Therefore, when the first positioning member 15 and the second positioning member 16 are docked up and down in the mounting groove of the shield tail, an electrical connector is formed, and the sensor output line 10 and the output line 1 are electrically connected. Here, the sensor output line 10 is a connecting line drawn from the sensor, and the output line 1 is used to connect external equipment such as a host computer for signal collection and processing. Therefore, the first positioning member 15 and the second positioning member 16 can make the sensor output line 10 and the output line 1 dock when plugged in, so as to realize the conduction and transmission of the sensor signal. According to whether each shield tail brush 11 is provided with a sensor, the number of wiring assemblies can be selectively set, that is, when any shield tail brush 11 is provided with a sensor, a corresponding wiring assembly is set, so there may be a situation where multiple sets of wiring assemblies are correspondingly provided on the passage of the output line 1.

[0031] Further, in order to introduce the outgoing wire 1 from the outside into the shield tail and connect it to the second positioning member 16, the outgoing wire 1 is connected to the second positioning member 16 through the wiring hole 4 that runs through the front and rear ends of the shield tail. Specifically, the wiring hole 4 can be a through hole extending along the length direction of the shield tail, and a first opening is provided at the front end of the shield tail, and a second opening is provided at the rear end of the shield tail, and the second opening is a mounting groove for the first positioning member 15 and the second positioning member 16 to be arranged therein.

[0032] In some embodiments, a seal is provided at the first opening, and the outlet line 1 passes through the seal to pass through the shield tail, and the seal seals the wiring hole 4. If the first positioning member 15 and / or the second positioning member 16 are damaged, the shield tail grease leaks into the wiring hole 4 from the second opening. By cutting off the outlet line 1 and utilizing the sealing function of the seal, the external environment can be isolated from the inside of the wiring hole 4 to prevent further leakage of grease. As one embodiment, the seal can be a ball valve 2, which is installed on the first opening through a connector 3. The cross-section of the first opening can be set to be circular. When a leak occurs, the ball valve 2 can be closed urgently to close the wiring hole 4. Exemplarily, the connector 3 can be a steel pipe with a diameter slightly larger than the diameter of the first opening, which is welded to the first opening.

[0033] In some embodiments, based on the length of the shield tail, in order to facilitate leading the output line 1 from the rear end to the front end of the shield tail through the wiring hole 4, the shield shell is provided with at least one operating hole 8 connected to the wiring hole 4. When the output line 1 is led and threaded in the wiring hole 4 for the first time, the operator can put his hand into the operating hole 8 to correctly guide the output line 1 for easy installation.

[0034] Further, each operating hole 8 can be sealed by the cover plate 7, and the outer end surface of the operating hole 8 is provided with a mounting hole larger than the inner diameter of the operating hole 8, and the cover plate 7 is fixed in the mounting hole by the first fastener 5. Specifically, a first threaded hole 9 is provided on the bottom surface of the mounting hole, and a first countersunk hole 17 is provided at a position relative to the first threaded hole 9 of the cover plate 7. The first fastener 5 can pass through the first countersunk hole 17 and be tightened on the first threaded hole 9 to fix the cover plate 7 on the outer end surface of the operating hole 8. At the same time, in order to further improve the sealing effect of the cover plate 7, a first sealing ring 6 is provided between the cover plate 7 and the mounting hole, and a first sealing ring groove 18 for the first sealing ring 6 to be embedded is provided at the bottom of the cover plate 7. It can be imagined that when the first positioning member 15 and the second positioning member 16 are damaged and the ball valve 2 is closed, the first sealing ring 6 can prevent the grease in the operating hole 8 from leaking from the cover plate 7, thereby improving the sealing performance.

[0035] The specific structure of the first positioning member 15 and the second positioning member 16 is described below. This is only used as an example of one implementation method. Of course, the first positioning member 15 and the second positioning member 16 can also be used in other forms to achieve the docking of the sensor output line 10 and the output line 1, as well as the positioning and installation on the shield tail.

[0036] The upper part of the first positioning member 15 is installed with the bottom plate of the shield tail brush 11 through the second fastener 13. Specifically, a through hole 28 is opened on the bottom plate of the shield tail brush 11, and a second threaded hole 21 is opened on the top of the first positioning member 15 to adapt to the position of the through hole 28. After each through hole 28 and the second threaded hole 21 are one-to-one corresponding, the second fastener 13 can be completely passed through the through hole 28 and screwed into the second threaded hole 21 to fix the bottom plate of the shield tail brush 11 and the first positioning member 15.

[0037] The first positioning member 15 achieves sealing between the first positioning member 15 and the shield tail mounting groove through the second sealing ring 14. A second sealing ring groove 20 for the second sealing ring 14 to be embedded is provided on the outer periphery of the first positioning member 15. The second sealing ring 14 can isolate the shield tail grease cavity formed between the front and rear shield tail brushes 11 from the wiring hole 4 to prevent grease from leaking into the wiring hole 4.

[0038] The second positioning member 16 is installed in the installation groove of the shield tail through the third fastener 25. Specifically, a third threaded hole 30 is provided on the bottom surface of the installation groove, and a second countersunk hole 24 is provided at a position opposite to the third threaded hole 30 of the second positioning member 16. The third fastener 25 can be screwed into the third threaded hole 30 from top to bottom and enter the second countersunk hole 24 to achieve the installation and fixation of the second positioning member 16.

[0039] In this embodiment, the first positioning member 15 and the second positioning member 16 are columnar structures, so the threaded holes are evenly distributed along the circumferential direction of the cross section of the first positioning member 15 and the second positioning member 16 to ensure uniform force during fixation.

[0040] On this basis, a positioning structure is further provided between the first positioning member 15 and the second positioning member 16, and the positioning structure may be a positioning pin 23 and a matching hole 19 located on the mating surface of the first positioning member 15 and the second positioning member 16. As one embodiment, a matching hole 19 is provided on the bottom edge of the first positioning member 15, and a positioning pin 23 is provided on the top edge of the second positioning member 16. When the positioning pin 23 is inserted into the matching hole 19, the axial directions of the first positioning member 15 and the second positioning member 16 coincide, and the installation positions of the bottom plate of the shield tail brush 11 and the first positioning member 15, the installation positions of the second positioning member 16 and the mounting groove, and the docking state of the first positioning member 15 and the second positioning member 16 are simultaneously satisfied, so that the first positioning member 15 and the second positioning member 16 can be installed more conveniently.

[0041] Furthermore, the first positioning member 15 and the second positioning member 16 are butted together via a latch structure to form an electrical connector.

[0042] The latch structure includes a matching plug and socket. In this embodiment, a protruding plug is provided at the bottom of the first positioning member 15, and a recessed socket is provided at the top of the second positioning member 16. When the first positioning member 15 and the second positioning member 16 are axially connected, the plug and the socket are plugged together.

[0043] On this basis, an auxiliary positioning structure can be further provided to prevent the first positioning member 15 and the second positioning member 16 from relative displacement, such as rotation. As one implementation method, the auxiliary positioning structure includes a positioning hole 22 and a positioning member 26 respectively provided at the plug and the socket end. Specifically, the positioning hole 22 is provided at the end face of the plug, and the positioning member 26 is provided at the end face of the socket. The structures of the positioning hole 22 and the positioning member 26 can be a column, or any shape that is compatible and can be plugged in, which can further fix the docking of the first positioning member 15 and the second positioning member 16 to ensure that no looseness occurs.

[0044] In addition, the second positioning member 16 and the mounting groove can also be positioned by plugging in. For example, the bottom of the second positioning member 16 is provided with a protrusion 29 that can be plugged into the wiring hole 4. The inner diameter of the wiring hole 4 is adapted to the outer diameter of the protrusion 29. The opening of the wiring hole 4 on the bottom surface of the mounting groove is set as a protrusion positioning hole 27. Therefore, the protrusion 29 and the protrusion positioning hole 27 can be used for quick positioning, and then the second positioning member 16 can be installed by the third fastener 25.

[0045] The sensor is generally installed inside the brush body of the shield tail brush 11 or other positions. In order to facilitate the sensor output line 10 to be led out from the inside of the brush body, the bottom of the shield tail brush 11 is provided with a sensor output hole 31 for leading the sensor output line 10 from the inside of the brush body and a shield tail brush bottom groove 12 connecting the sensor output hole 31 and the first positioning member 15. Specifically, the sensor output hole 31 is set at the front end of the shield tail brush bottom groove 12 (the side away from the through hole 28), and is punched upward from the shield tail brush bottom groove 12. The sensor output line 10 is sealed inside the shield tail brush bottom groove 12 by glue, and after sealing, it is flush with the bottom plate of the shield tail brush 11 to avoid affecting the installation of the shield tail brush 11 with the sensor.

[0046] When using this embodiment, it is necessary to first pass the internal sensor output line 10 through the shield tail brush sensor output hole 31, and at the same time connect the sensor output line 10 to the first positioning member 15, fix the first positioning member 15 on the shield tail brush bottom plate, and record the positional relationship between the matching hole 19 on the first positioning member 15 and the shield tail brush bottom plate, and fix the sensor output line 10 in the bottom groove 12 of the shield tail brush with glue; pass the output line 1 through the convex positioning hole 27 into the wiring hole 4, and pass it out in the direction of the front of the shield tail. If there is an obstacle in the middle, open the cover plate 7 of the operation hole 8, and pass through the operation hole 8. Pass the outlet line 1 through; after the outlet line 1 is passed through, install the second positioning piece 16 according to the positional relationship between the matching hole 19 on the first positioning piece 15 and the shield tail brush bottom plate, and make the positional relationship between the positioning pin 23 and the shield tail consistent with the positional relationship between the matching hole 19 on the first positioning piece 15 and the shield tail brush bottom plate, that is, the orientation of the positioning pin 23 and the shield tail is consistent with the orientation of the matching hole 19 and the shield tail brush bottom plate; finally, install the shield tail brush 11 with the sensor and the first positioning piece 15 on the shield shell, so that the first positioning piece 15 and the second positioning piece 16 are butt-jointed together to realize the connection between the sensor outlet line 10 and the outlet line 1.

[0047] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.

Claims

1. A wiring assembly for the outgoing wire of a shield tail brush sensor, wherein a sensor is arranged inside the shield tail brush, and the outgoing wire of the sensor is fixed on the shield tail through the wiring assembly and passes through the shield tail, characterized in that: The wiring assembly comprises: A first positioning piece, which is fixed to the bottom of the shield tail brush and is used for the sensor wire to pass through; A second positioning member, the second positioning member is fixed on the shield tail and allows the outgoing wire to pass through and pass out from the end of the shield tail; The first positioning member and the second positioning member constitute an electrical connector, so that the sensor output line on the first positioning member and the output line on the second positioning member are electrically connected.

2. The wiring assembly for the shield tail brush sensor outlet according to claim 1, characterized in that: The outgoing wire is connected to the second positioning piece through a wiring hole that runs through the front end and the rear end of the shield tail.

3. The wiring assembly for the shield tail brush sensor outlet according to claim 2, characterized in that: A sealing member is provided at the front end of the wiring hole.

4. The wiring assembly for the shield tail brush sensor outlet according to claim 2, characterized in that: At least one operating hole connected to the wiring hole is opened on the shield tail, and the operating hole is closed by a cover plate.

5. The wiring assembly for the shield tail brush sensor outlet according to claim 4, characterized in that: An installation hole is provided on the outer end surface of the operation hole, the cover plate is fixed in the installation hole by a first fastener, and a first sealing ring is provided between the cover plate and the installation hole.

6. The wiring assembly for the shield tail brush sensor outlet according to claim 1, characterized in that: The upper portion of the first positioning member is fixed to the shield tail brush bottom plate through a second fastener, and a second sealing ring is provided between the first positioning member and the shield shell.

7. The wiring assembly for the shield tail brush sensor outlet according to claim 1, characterized in that: The second positioning member is installed in the installation groove of the shield shell through a third fastener, and the first positioning member and the second positioning member are arranged in the installation groove after being connected.

8. The wiring assembly for the shield tail brush sensor outlet according to claim 1, characterized in that: The first positioning member and the second positioning member are butted against each other via a latch structure.

9. The wiring assembly for the shield tail brush sensor outlet according to claim 8, characterized in that: The latch structure comprises a matching plug and socket, and an auxiliary positioning structure is provided on the butt joint surfaces of the plug and the socket.

10. The wiring assembly for the shield tail brush sensor outlet according to claim 9, characterized in that: The auxiliary positioning structure comprises a positioning hole arranged on the plug, and a positioning piece arranged on the socket and capable of being inserted into the positioning hole correspondingly.

Images