Tail shield escaping device of shield tunneling machine

Abstract

The tail shield escaping device of the shield tunneling machine comprises a connecting ring, a rotating ring is rotationally connected to the left side of the outer arc face of the connecting ring, mounting grooves are formed in the right side of the interior of the connecting ring, and the tail shield escaping device further comprises a propelling mechanism, a loosening mechanism and an adjusting mechanism; the pushing mechanism comprises transverse rods, connecting plates and a pushing plate, the transverse rods are slidably connected with sliding holes formed in the front side and the rear side of the right wall of the mounting groove correspondingly, the left ends of the two longitudinally adjacent transverse rods are fixedly connected with the right end of one connecting plate, and the right ends of the two longitudinally adjacent transverse rods are fixedly connected with the left end of the pushing plate; according to the tail shield escaping device of the shield tunneling machine, the problem that landslide or debris flow occurs due to the fact that water damages a geologic structure is solved, self-locking can be conducted through matched arrangement of a worm and a worm wheel after the position of a knocking hammer is adjusted subsequently, more manual operation and adjustment are not needed in the whole process, and the working efficiency is improved. And the time required for the shield tunneling machine to escape is further shortened.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a tail shield escape device of a shield machine. Background Art

[0002] The shield machine is a large-scale engineering machine used for underground tunnel construction. It may encounter various complex geological conditions during the excavation process, causing equipment failure or jamming. The tail shield release device of the shield machine is an important safety device on the shield machine. Its purpose is to enable the shield machine to recover from difficult geological conditions or obstacles. When the tail shield escape device of the shield machine is in use, the soil or rock around the shield machine is usually loosened by hydraulic force. During the loosening process, the position of the water outlet is adjusted by adjusting the device to adjust the contact point between the water and the soil or rock. When the soil or rock around the shield machine is loosened, the jack generates additional thrust to help the shield machine escape. The existing tail shield release device of the shield machine can loosen the soil or rock blocking the shield machine by hydraulic power when it is working. However, the long-term hydraulic release work will cause secondary disasters such as landslides or mud-rock flows. After the subsequent regulating equipment adjusts the position of the water outlet, it is necessary to add additional self-locking components to lock and fix it, which further increases the cost. The jack is often more manually operated and adjusted during use, which increases the complexity of the operation and finally increases the time required for the shield machine to be released. For this reason, we propose a tail shield release device for the shield machine. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a tail shield escape device for a shield machine, which solves the problem of landslides or mud-rock flows caused by damage to geological structures caused by water. After the position of the strike hammer is subsequently adjusted, it can be self-locked through the coordination of the worm and the worm wheel, without the need for more manual operation and adjustment, further shortening the time required for the shield machine to escape, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a tail shield escape device for a shield machine, comprising a connecting ring, the left side of the outer arc surface of the connecting ring is rotatably connected with a rotating ring, the right side inside the connecting ring is respectively provided with mounting grooves, and further comprising a propulsion mechanism, a loosening mechanism and an adjustment mechanism; Propulsion mechanism: It includes a cross bar, a connecting plate and a push plate. The cross bar is slidably connected to the sliding holes arranged on the front and rear sides of the right wall of the installation groove respectively. The left ends of two longitudinally adjacent cross bars are fixedly connected to the right end of a connecting plate, and the right ends of two longitudinally adjacent cross bars are fixedly connected to the left end of the push plate. Loosening mechanism: It is arranged inside the rotating ring; Adjustment mechanism: It is arranged inside the mounting groove on the lower side. The adjustment mechanism is fixedly connected to the right side of the inner arc surface of the rotating ring, which solves the problem of landslides or mudslides caused by water damage to the geological structure. After the position of the strike hammer is adjusted subsequently, it can be self-locked through the coordination of the worm and the worm wheel. No more manual operation and adjustment are required, further shortening the time required for the shield machine to escape.

[0005] Furthermore, it also includes a control switch group, which is located outside the connecting ring. The input end of the control switch group is electrically connected to the external power supply and can regulate the electrical components inside the device.

[0006] Furthermore, the propulsion mechanism also includes a screw, a push plate and a trapezoidal plate. The screws are rotatably connected to the side of the front wall of the mounting groove away from the inner center of the connecting ring. The push plates are slidably connected to the left wall of the mounting groove. The push plates are threadedly connected to the front side of the outer arc surface of the screw through the threaded holes set on the left side of the front end. The trapezoidal plates are set in the middle of the left end of the connecting plate. The right end of the push plate is respectively in contact with the inclined surface set on the left end of the laterally adjacent trapezoidal plate, so that the position of the push plate can be adjusted.

[0007] Furthermore, the loosening mechanism includes a sliding column, an adjusting plate and a knocking hammer. The sliding columns are respectively slidably connected in the avoidance grooves arranged on the left side of the outer arc surface of the rotating ring. A knocking hammer is arranged at the end of the sliding column away from the inner center of the connecting ring, and an adjusting plate is arranged at the end of the sliding column close to the inner center of the connecting ring. An adjusting groove is arranged at the right end of the adjusting plate, so that the soil and rocks can be loosened by the knocking hammer.

[0008] Furthermore, the loosening mechanism also includes a protective cover, a drive motor, a center wheel and an adjusting rod. The protective cover is arranged on the left side of the inner arc surface of the rotating ring, the left end of the protective cover is provided with a drive motor, the right end of the drive motor output shaft is provided with a center wheel, and the right end of the center wheel is provided with an adjusting rod on the side close to the inner center of the connecting ring. The right end of the adjusting rod is respectively located inside the laterally adjacent adjustment slots, so as to adjust the position of the striking hammer.

[0009] Furthermore, the adjustment mechanism includes a fixed seat, a one-third gear ring, a connecting rod and a gear. The fixed seat is fixedly connected to the right side of the inner arc surface of the rotating ring. A one-third gear ring is provided at the upper end of the fixed seat. The connecting rod is rotatably connected to the upper side of the left wall of the lower mounting groove. A gear is provided at the left end of the connecting rod. The one-third gear ring is meshed with the gear, and the rotating ring can be driven to rotate through the one-third gear ring.

[0010] Furthermore, the adjustment mechanism also includes an output rod, a worm and a worm wheel. The output rod is rotatably connected to the upper side of the front wall of the mounting groove on the lower side. A worm is provided in the middle of the outer arc surface of the output rod. The worm wheel is provided on the right side of the outer arc surface of the connecting rod. The worm and the worm wheel are meshingly connected and can drive the gear to rotate through the connecting rod.

[0011] Furthermore, a motor is provided on one side of the rear wall of the mounting groove away from the inner center of the connecting ring, the front end of the motor output shaft is fixedly connected to the rear ends of the longitudinally adjacent screws, the input ends of the motors are electrically connected to the output ends of the control switch group, and the position of the push plate can be adjusted by the screws.

[0012] Furthermore, an adjusting motor is arranged on the upper side of the rear wall of the lower mounting groove, the front end of the adjusting motor output shaft is fixedly connected to the rear end of the output rod, the input end of the adjusting motor is electrically connected to the output end of the control switch group, and the worm can be driven to rotate through the output rod.

[0013] Furthermore, a spring is provided between the right end of the connecting plate and the left wall of the mounting groove, and the spring is sleeved on the outside of the left side of the cross bar. The thrust generated by the extension of the spring can drive the push plate to move and reset through the connecting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the tail shield escape device of the shield machine has the following advantages: 1. During the rotation of the center wheel, the adjusting rod can drive the percussion hammer to perform vertical reciprocating motion, thereby loosening the soil or rock around the shield machine through the percussion hammer, replacing the traditional method of loosening the soil or rock by hydraulic force, and solving the problem of landslides or mud-rock flows caused by water damage to the geological structure.

[0015] 2. The gears then drive one-third of the gear ring to rotate through meshing connection, and finally one-third of the gear ring drives the rotating ring to rotate through the fixed seat, so as to adjust the position of the knocking hammer. After the position of the knocking hammer is adjusted, it can be self-locked through the coordination of the worm and the worm wheel, without adding additional self-locking components. The structure is simple and the cost is relatively low.

[0016] 3. The trapezoidal plate drives the connecting plate to move to the right, and the connecting plate drives the push plate to move to the right through the cross plate, thereby applying thrust to the tail of the shield machine. No more manual operation and adjustment are required, which reduces the complexity of the operation and further shortens the time required for the shield machine to escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the propulsion mechanism of the present invention; Figure 3 It is a structural schematic diagram of the regulating mechanism of the present invention; Figure 4 It is a structural schematic diagram of the loosening mechanism of the present invention.

[0018] In the figure: 1 connecting ring, 2 control switch group, 3 rotating ring, 4 mounting groove, 5 pushing mechanism, 51 cross bar, 52 connecting plate, 53 push plate, 54 screw rod, 55 push plate, 56 trapezoidal plate, 6 loosening mechanism, 61 sliding column, 62 adjusting plate, 63 knocking hammer, 64 protective cover, 65 driving motor, 66 center wheel, 67 adjusting rod, 7 adjusting mechanism, 71 fixing seat, 72 one-third gear ring, 73 connecting rod, 74 gear, 75 output rod, 76 worm, 77 worm wheel, 8 adjusting motor, 9 motor, 10 spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-4 , this embodiment provides a technical solution: a tail shield escape device of a shield machine, comprising a connecting ring 1, a rotating ring 3 is rotatably connected to the left side of the outer arc surface of the connecting ring 1, and mounting grooves 4 are respectively arranged on the right side inside the connecting ring 1, and further comprising a propulsion mechanism 5, a loosening mechanism 6 and an adjustment mechanism 7; The propulsion mechanism 5 includes a cross bar 51, a connecting plate 52 and a push plate 53. The cross bar 51 is slidably connected to the sliding holes arranged on the front and rear sides of the right wall of the installation groove 4 respectively. The left ends of the two longitudinally adjacent cross bars 51 are fixedly connected to the right end of a connecting plate 52, and the right ends of the two longitudinally adjacent cross bars 51 are fixedly connected to the left end of the push plate 53. The propulsion mechanism 5 also includes a screw 54, a push plate 55 and a trapezoidal plate 56. The screw 54 is rotatably connected to the side of the front wall of the installation groove 4 away from the inner center of the connecting ring 1, and the push plates 55 are slidably connected to the left wall of the installation groove 4. The push plates 55 are all threadedly connected to the front side of the outer arc surface of the screw rod 54 through the threaded holes set on the left side of the front end thereof, and the trapezoidal plates 56 are all set in the middle of the left end of the connecting plate 52. The right end of the push plate 55 is respectively in contact with the inclined surface set on the left end of the trapezoidal plate 56 adjacent to the horizontal side. The trapezoidal plate 56 drives the connecting plate 52 to move rightward, and the connecting plate 52 drives the push plate 53 to move rightward through the cross plate 51, thereby applying thrust to the tail of the shield machine, without more manual operation and adjustment, reducing the complexity of the operation, and further shortening the time required for the shield machine to escape from trouble; Loosening mechanism 6: It is arranged inside the rotating ring 3, and the loosening mechanism 6 includes a sliding column 61, an adjusting plate 62 and a percussion hammer 63. The sliding column 61 is respectively slidably connected to the avoidance groove arranged on the left side of the outer arc surface of the rotating ring 3, and the end of the sliding column 61 away from the inner center of the connecting ring 1 is provided with a percussion hammer 63, and the end of the sliding column 61 close to the inner center of the connecting ring 1 is provided with an adjusting plate 62, and the right end of the adjusting plate 62 is provided with an adjusting groove. The loosening mechanism 6 also includes a protective cover 64, a driving motor 65, a center wheel 66 and an adjusting rod 67. The protective cover 64 is arranged on the left side of the inner arc surface of the rotating ring 3, and the left end of the protective cover 64 A driving motor 65 is provided at each end, and a center wheel 66 is provided at the right end of the output shaft of the driving motor 65. An adjusting rod 67 is provided on the right end of the center wheel 66 near the inner center of the connecting ring 1. The right ends of the adjusting rods 67 are respectively located inside the laterally adjacent adjusting grooves. During the rotation of the center wheel 66, the adjusting rod 67 can drive the percussion hammer 63 to perform vertical reciprocating motion, thereby loosening the soil or rock around the shield machine through the percussion hammer 63, replacing the traditional method of loosening the soil or rock by hydraulic power, and solving the problem of landslide or mud-rock flow caused by water damage to the geological structure; Adjustment mechanism 7: It is arranged inside the mounting groove 4 on the lower side. The adjustment mechanism 7 is fixedly connected to the right side of the inner arc surface of the rotating ring 3. The adjustment mechanism 7 includes a fixed seat 71, a one-third gear ring 72, a connecting rod 73 and a gear 74. The fixed seat 71 is fixedly connected to the right side of the inner arc surface of the rotating ring 3. The upper end of the fixed seat 71 is provided with a one-third gear ring 72. The connecting rod 73 is rotatably connected to the upper side of the left wall of the mounting groove 4 on the lower side. The left end of the connecting rod 73 is provided with a gear 74. The one-third gear ring 72 is meshed and connected with the gear 74. The adjustment mechanism 7 also includes an output rod 75, a worm 76 and a worm wheel 77. The output rod 75 is rotatably connected to the mounting groove 4 on the lower side. On the upper side of the front wall of the groove 4, a worm 76 is provided in the middle of the outer arc surface of the output rod 75, and the worm wheel 77 is provided on the right side of the outer arc surface of the connecting rod 73. The worm 76 is meshingly connected with the worm wheel 77, and the gear 74 drives the one-third gear ring 72 to rotate through the meshing connection. Finally, the one-third gear ring 72 drives the rotating ring 3 to rotate through the fixed seat 71, thereby adjusting the position of the knocking hammer 63. The rotation angle of the knocking hammer 63 does not exceed 120°. After the position of the knocking hammer 63 is adjusted, it can be self-locked by the matching setting of the worm 76 and the worm wheel 77, without adding additional self-locking components. The structure is simple and the cost is relatively low.

[0021] Among them: it also includes a control switch group 2, which is located outside the connecting ring 1, and the input end of the control switch group 2 is electrically connected to the external power supply, which can regulate the electrical components inside the device.

[0022] Among them: a motor 9 is arranged on one side of the rear wall of the mounting groove 4 away from the inner center of the connecting ring 1, the front end of the output shaft of the motor 9 is fixedly connected to the rear end of the longitudinally adjacent screw rods 54, and the input end of the motor 9 is electrically connected to the output end of the control switch group 2. Through the regulation of the control switch group 2, the motor 9 starts to run, and the output shaft of the motor 9 drives the screw rod 54 to rotate. During the rotation, the screw 54 drives the push plate 55 to move backward through the threaded connection.

[0023] Among them: an adjusting motor 8 is arranged on the upper side of the rear wall of the mounting groove 4 on the lower side, the front end of the output shaft of the adjusting motor 8 is fixedly connected to the rear end of the output rod 75, the input end of the adjusting motor 8 is electrically connected to the output end of the control switch group 2, and the adjusting motor 8 starts to run through the control of the control switch group 2, and the output shaft of the adjusting motor 8 drives the worm 76 to rotate through the output rod 75, and the worm 76 drives the worm wheel 77 to rotate through the meshing connection.

[0024] Among them: a spring 10 is arranged between the right end of the connecting plate 52 and the left wall of the installation groove 4, and the spring 10 is sleeved on the outside of the left side of the cross bar 51. The thrust generated by the extension of the spring 10 can drive the push plate 53 to move and reset through the connecting plate 52.

[0025] The working principle of the tail shield escape device of a shield machine provided by the present invention is as follows: before use, the tail shield escape device of the shield machine is first installed and docked with the shield machine, so that the tail shield escape device of the shield machine is fixed to the rear side of the tail shield of the shield machine. When the shield machine is stuck or encounters an obstacle, the drive motor 65 starts to run through the control of the control switch group 2, and the drive motor 65 drives the center wheel 66 to rotate, and the center wheel 66 drives the adjustment rod 67 to rotate around the axis of the center wheel 66. The centers of the adjusting rod 67 do not coincide, and the adjusting rod 67 will produce lateral and vertical displacements during the circular motion, so that the adjusting rod 67 will slide and rotate relatively inside the adjusting groove, and then with the rotation of the center wheel 66, the adjusting rod 67 drives the sliding column 61 to perform vertical reciprocating motion through the adjusting rod 62, and the sliding column 61 drives the percussion hammer 63 to perform vertical reciprocating motion, thereby loosening the soil or rock around the shield machine through the percussion hammer 63. During the operation of the percussion hammer 63, the control switch group 2 is controlled by the control , the adjusting motor 8 starts to run, the output shaft of the adjusting motor 8 drives the worm 76 to rotate through the output rod 75, the worm 76 drives the worm wheel 77 to rotate through the meshing connection, the worm wheel 77 drives the gear 74 to rotate through the connecting rod 73, the gear 74 drives the one-third gear ring 72 to rotate through the meshing connection, and finally the one-third gear ring 72 drives the rotating ring 3 to rotate through the fixed seat 71, thereby adjusting the position of the knocking hammer 63, the rotation angle of the knocking hammer 63 does not exceed 120°, when the shield machine is around After the soil or rock is loosened, the motor 9 starts to run through the control of the switch group 2, and the output shaft of the motor 9 drives the screw 54 to rotate. During the rotation, the screw 54 drives the push plate 55 to move backward through the threaded connection. During the movement of the push plate 55, the trapezoidal plate 56 receives the thrust of the push plate 55 and starts to drive the connecting plate 52 to move to the right. The spring 10 contracts, and the connecting plate 52 drives the push plate 53 to move to the right through the cross plate 51, thereby applying thrust to the tail of the shield machine, and finally helping the shield machine to get out of trouble.

[0026] It is worth noting that the drive motor 65 and the adjustment motor 8 disclosed in the above embodiments can be selected from 5IK200A-AF, and the motor 9 can be selected from ECMA-C20604RS. The control switch group 2 is provided with control buttons corresponding to the drive motor 65, the adjustment motor 8 and the motor 9 for controlling their switches.

[0027] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tail shield escape device for a shield machine, comprising a connecting ring (1), the left side of the outer arc surface of the connecting ring (1) being rotatably connected to a rotating ring (3), and the right side of the inside of the connecting ring (1) being respectively provided with mounting grooves (4), characterized in that: It also includes a propulsion mechanism (5), a loosening mechanism (6) and an adjustment mechanism (7); The propulsion mechanism (5) comprises a cross bar (51), a connecting plate (52) and a push plate (53), wherein the cross bar (51) is slidably connected to sliding holes provided at the front and rear sides of the right wall of the mounting groove (4), respectively, the left ends of two longitudinally adjacent cross bars (51) are fixedly connected to the right end of a connecting plate (52), and the right ends of two longitudinally adjacent cross bars (51) are fixedly connected to the left end of the push plate (53); Loosening mechanism (6): arranged inside the rotating ring (3); Adjustment mechanism (7): It is arranged inside the mounting groove (4) on the lower side. The adjustment mechanism (7) is fixedly connected to the right side of the inner arc surface of the rotating ring (3).

2. The tail shield escape device of a shield machine according to claim 1, characterized in that: It also comprises a control switch group (2), wherein the control switch group (2) is located outside the connection ring (1), and an input end of the control switch group (2) is electrically connected to an external power supply.

3. The tail shield escape device of a shield machine according to claim 2, characterized in that: The propulsion mechanism (5) further comprises a screw rod (54), a push plate (55) and a trapezoidal plate (56); the screw rod (54) is rotatably connected to a side of the front wall of the mounting groove (4) away from the inner center of the connecting ring (1); the push plates (55) are slidably connected to the left wall of the mounting groove (4); the push plates (55) are threadedly connected to the front side of the outer arc surface of the screw rod (54) through a threaded hole provided on the left side of the front end thereof; the trapezoidal plates (56) are provided at the middle of the left end of the connecting plate (52); and the right end of the push plate (55) is respectively in contact with the inclined surface provided at the left end of the laterally adjacent trapezoidal plate (56).

4. The tail shield escape device of a shield machine according to claim 2, characterized in that: The loosening mechanism (6) comprises a sliding column (61), an adjustment plate (62) and a knocking hammer (63), wherein the sliding column (61) is respectively slidably connected to an avoidance groove arranged on the left side of the outer arc surface of the rotating ring (3), the end of the sliding column (61) away from the inner center of the connecting ring (1) is provided with a knocking hammer (63), the end of the sliding column (61) close to the inner center of the connecting ring (1) is provided with an adjustment plate (62), and the right end of the adjustment plate (62) is provided with an adjustment groove.

5. The tail shield escape device of a shield machine according to claim 4, characterized in that: The loosening mechanism (6) further comprises a protective cover (64), a drive motor (65), a center wheel (66) and an adjusting rod (67); the protective cover (64) is arranged on the left side of the inner arc surface of the rotating ring (3); the drive motor (65) is arranged at the left end of the protective cover (64); the center wheel (66) is arranged at the right end of the output shaft of the drive motor (65); the adjusting rod (67) is arranged on the side of the right end of the center wheel (66) close to the inner center of the connecting ring (1); and the right ends of the adjusting rods (67) are respectively located inside the laterally adjacent adjusting grooves.

6. The tail shield escape device of a shield machine according to claim 2, characterized in that: The adjustment mechanism (7) comprises a fixed seat (71), a one-third gear ring (72), a connecting rod (73) and a gear (74); the fixed seat (71) is fixedly connected to the right side of the inner arc surface of the rotating ring (3); the upper end of the fixed seat (71) is provided with a one-third gear ring (72); the connecting rod (73) is rotatably connected to the upper side of the left wall of the lower mounting groove (4); the left end of the connecting rod (73) is provided with a gear (74); and the one-third gear ring (72) is meshingly connected with the gear (74).

7. The tail shield escape device of a shield machine according to claim 6, characterized in that: The adjusting mechanism (7) further comprises an output rod (75), a worm (76) and a worm wheel (77); the output rod (75) is rotatably connected to the upper side of the front wall of the lower mounting groove (4); a worm (76) is provided in the middle of the outer arc surface of the output rod (75); the worm wheel (77) is provided on the right side of the outer arc surface of the connecting rod (73); and the worm (76) is meshingly connected with the worm wheel (77).

8. The tail shield escape device of a shield machine according to claim 3, characterized in that: A motor (9) is provided on one side of the rear wall of the mounting groove (4) away from the inner center of the connecting ring (1), the front end of the output shaft of the motor (9) is fixedly connected to the rear end of the longitudinally adjacent screw rods (54), and the input end of the motor (9) is electrically connected to the output end of the control switch group (2).

9. The tail shield escape device of a shield machine according to claim 7, characterized in that: An adjusting motor (8) is arranged on the upper side of the rear wall of the lower mounting groove (4), the front end of the output shaft of the adjusting motor (8) is fixedly connected to the rear end of the output rod (75), and the input end of the adjusting motor (8) is electrically connected to the output end of the control switch group (2).

10. The tail shield escape device of a shield machine according to claim 1, characterized in that: A spring (10) is provided between the right end of the connecting plate (52) and the left wall of the mounting groove (4), and the spring (10) is sleeved on the outside of the left side of the cross bar (51).

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