Shield launching end tunnel entry posture adjusting control device

Abstract

The application provides a kind of shield starting end hole entry posture adjustment control device, including lower bottom plate, it is characterized in that further include: upper bottom plate, the upper bottom plate is set to lower bottom plate top; Jacking assembly, the jacking assembly is connected between lower bottom plate and upper bottom plate, to simultaneously jacking upper bottom plate;Shield body support assembly, the shield body support assembly includes left support column and right support column, which are parallel to each other and can be laterally moved and set on the upper bottom plate, the left support column and the right support column are matched with each other to support the shield body;Worm gear assembly, the worm gear assembly includes left worm gear and right worm gear, which are respectively set on the top surface of the upper bottom plate left and right ends, the left worm gear and the right worm gear drive the left support rod and the right support rod to move laterally on the upper bottom plate through worm gear transmission respectively.The application can be used as the support and storage base of the shield body, can adapt to the placement and adjustment of different models of shield tunneling machine shield body, and can also adapt to the requirements of shield tunneling machine starting under different conditions.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shield launching equipment, in particular, relates to a kind of shield launching end hole posture adjustment control device. BACKGROUND

[0002] The shield body of shield machine is a high-strength and high-density component, and the engineering quality requirement is high. The outer contour surface is approximately a standard circular curved surface structure, and the self-weight is large, which can reach about 500 tons. The large equipment is needed for hoisting during transportation and stacking. Sometimes, the shield launching device of the previous design height cannot make the shield body axis height consistent with the predetermined shield tunneling height due to different initial conditions of the site, such as different left and right heights or the need to use it again in another site. At this time, the site personnel will remove a part of the height on one side and re-weld. This not only makes it difficult to meet the accuracy requirement, but also needs multiple measurements, calculations, and even multiple weldings to approach the target requirement. SUMMARY

[0003] To solve the problem on the construction site, the present application provides a kind of shield launching end hole posture adjustment control device, which can be used as a support and stacking base for the shield body, and can adapt to the placement and adjustment of shield bodies of different models, and can also adapt to the requirements of shield machine launching under different conditions.

[0004] The shield launching end hole posture adjustment control device comprises a lower bottom plate, characterized in that it further comprises:

[0005] An upper bottom plate is arranged above the lower bottom plate.

[0006] A jacking assembly is connected between the lower bottom plate and the upper bottom plate to synchronously jack up the upper bottom plate.

[0007] A shield body support assembly comprises left and right support columns arranged on the upper bottom plate in parallel and transversely movable, and the left and right support columns cooperate to support the shield body.

[0008] A worm gear assembly comprises left and right worm gears arranged at the left and right ends of the top surface of the upper bottom plate, respectively. The left and right worm gears drive the left and right support rods to move transversely on the upper bottom plate through worm gear transmission.

[0009] As a specific technical solution, the device further comprises two support groove plates arranged in parallel at the front and rear ends of the upper bottom plate. The support groove plates are provided with wheel grooves, and the left and right ends of the left and right support columns are provided with pulley blocks. The pulley blocks can be embedded in the wheel grooves to slide transversely, so that the left and right support columns can move transversely on the support groove plates.

[0010] As a specific technical scheme, the pulley block is two steel pulleys in parallel series along the wheel groove direction.

[0011] As a specific technical scheme, the left worm gear and the right worm gear each include a box body fixedly arranged on the upper bottom plate, a worm wheel and a worm arranged in the box body; the worm of the left worm gear is provided with a hand crank at one end, and the worm wheel transmission shaft is connected to the left support rod at one end through screw threads; the worm of the right worm gear is provided with a hand crank at one end, and the worm wheel transmission shaft is connected to the right support rod at one end through screw threads.

[0012] As a specific technical scheme, the left support column and the right support column each include two side plates, a top plate connected between the two side plates, a bottom plate connected between the two side plates, a solid support column arranged between the middle positions of the top plate and the bottom plate, two rib plates arranged on both sides of the solid support column, and a pulley rotating shaft freely arranged through the solid support column and the two side plates.

[0013] As a specific technical scheme, the top plate in the left support column and the top plate in the right support column are both arranged obliquely and integrally in an inverted V shape.

[0014] As a specific technical scheme, the top plate on the left support column and the top plate on the right support column are provided with mutually symmetrical trapezoidal stress columns on the upper surfaces, and the top of the trapezoidal stress column is fixedly connected with a rubber buffer strip with an arc-shaped top surface.

[0015] As a specific technical scheme, the device further includes a transverse support reinforcing assembly.

[0016] The transverse support reinforcing assembly includes a transverse support reinforcing plate fixedly arranged at both ends on the two support groove plates, a gear set, a brake friction plate coaxially fixedly connected with the gear in the gear set, a left connecting rod, a right connecting rod, a shield pressing plate arranged directly above the support reinforcing plate, a pressing plate return assembly connected between the shield pressing plate and the support reinforcing plate, and a brake shoe connected to the bottom of the shield pressing plate and cooperating with the brake friction plate to brake the gear in the gear set.

[0017] The gear set includes a left contact gear (7021) and a right contact gear horizontally and transversely arranged on the support reinforcing plate; one end of the left connecting rod is fixedly connected with the left support column, and the other end is toothedly connected with the left contact gear; one end of the right connecting rod is fixedly connected with the right support column, and the other end is toothedly connected with the right contact gear.

[0018] As a specific technical scheme, the device further includes a longitudinal support reinforcing assembly.

[0019] The longitudinal support reinforcing assembly comprises two upper pressing blocks fixedly arranged on the bottom surface of the upper bottom plate respectively, two lower top blocks fixedly arranged on the top surface of the lower bottom plate respectively, a wedge block arranged between the upper pressing blocks and the lower top blocks on the same side, a pull rod transversely movably arranged through the wedge block, and fastening bolts arranged at the two ends of the pull rod.

[0020] As a specific technical solution, the jacking assembly is a jack.

[0021] The beneficial effects of the present application are as follows:

[0022] 1) The device can flexibly adjust the starting height and axis position of the shield body after the shield body is lowered by cooperating the worm gear assembly, the shield body support assembly and the jacking assembly, so that the support and stacking of the shield body meet the starting design requirements.

[0023] 2) The transverse support reinforcing assembly and the shield body support assembly are cooperated, which can share part of the weight of the shield body without affecting the adjustment of the axis position of the shield body by the left support column and the right support column, so as to reduce the transverse force of the shield body on the left support column and the right support column, thereby reducing the stress load of the worm gear transmission and protecting the safety of the structure of each connecting piece; and the device can automatically trigger the transverse support reinforcing assembly to act on the left support column and the right support column after the shield body is lowered, and through the cooperation of the middle brake pad, the brake friction plate, the connecting rod and the gear set, the left support column and the right support column can be limited and fixed, so as to further resist the transverse force of part of the weight of the shield body on the left support column and the right support column, thereby improving the service life and safety of the equipment.

[0024] 3) The longitudinal support reinforcing assembly and the jacking assembly are cooperated, so as to resist the gravity transmitted downward by the shield body together with the jacking assembly, thereby reducing the stress load of the jacking assembly and ensuring the stability and safety of the vertical stress of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the device of the present application;

[0026] Figure 2 It is a left view of the device of the present application;

[0027] Figure 3 It is a top view of the device of the present application;

[0028] Figure 4 It is a top view of the device of the present application (without the shield body pressing plate, the pressing plate return assembly and the brake pad);

[0029] Figure 5 It isFigure 1 Cross-sectional view of B-B;

[0030] Figure 6 As Figure 1 Cross-sectional view of C-C;

[0031] Figure 7 As Figure 1 Enlarged view of A;

[0032] Figure 8 Structure diagram of left and right worm gears in the device of the application;

[0033] Figure 9 Structure diagram of left and right support columns in the application;

[0034] Figure 10 Schematic diagram of the application in use;

[0035] The meanings of the various marks in the above figures are as follows:

[0036] 1 - lower bottom plate;

[0037] 2 - upper bottom plate;

[0038] 3 - jacking assembly;

[0039] 4 - shield support assembly, 401 - left support column, 402 - right support column, 403 - pulley set, 404 - side plate, 405 - top plate, 406 - bottom plate, 407 - solid support column, 408 - rib plate, 409 - trapezoidal force column, 410 - rubber buffer strip;

[0040] 5 - worm gear assembly, 501 - left worm gear, 502 - right worm gear, 503 - box, 504 - worm gear, 5041 - worm gear transmission shaft, 505 - worm, 506 - hand crank;

[0041] 6 - support groove plate, 601 - wheel groove;

[0042] 7 - transverse support reinforcement assembly, 701 - transverse support reinforcement plate, 702 - gear set, 7021 - left contact gear, 7022 - right contact gear, 703 - brake friction plate, 704 - left connecting rod, 705 - right connecting rod, 706 - shield pressing plate, 707 - pressing plate return assembly, 708 - brake plate;

[0043] 8 - longitudinal support reinforcement assembly, 801 - upper pressing block, 802 - upper pressing block, 803 - wedge block, 804 - pull rod, 805 - fastening bolt, 806 - trapezoidal clamping groove L

[0044] 9 - shield. DETAILED DESCRIPTION

[0045] The application will be further described in connection with the drawings in the form of specific embodiments. It should be noted that the following embodiments are illustrative of the application and are not meant to limit the scope of the application. Any equivalent replacement of the application made by those skilled in the art in the spirit of the application falls within the scope of the application. Embodiment

[0046] The shield tunnel starting end tunneling posture adjustment control device, please refer to Figures 1 to 3 , comprising

[0047] Lower bottom plate 1;

[0048] Upper bottom plate 2, the upper bottom plate 2 is arranged above the lower bottom plate 1;

[0049] Jacking assembly 3, the jacking assembly 3 is connected between the lower bottom plate 1 and the upper bottom plate 2, for synchronously jacking the upper bottom plate 2;

[0050] Shield body support assembly 4, the shield body support assembly 4 includes left support column 401 and right support column 402 which are arranged on the upper bottom plate 2 and can move horizontally, the left support column 401 and the right support column 402 are matched with each other to support the shield body;

[0051] Worm gear assembly 5, the worm gear assembly 5 includes left worm gear 501 and right worm gear 502 which are arranged on the top surface of the upper bottom plate 2 respectively, the left worm gear 501 and the right worm gear 502 drive the left support rod 401 and the right support rod 402 to move horizontally on the upper bottom plate 2 respectively through the rotation of the worm gear;

[0052] Based on the above structure, the working process or principle of the shield tunnel starting end tunneling posture adjustment control device is as follows:

[0053] Please refer to Figures 1 to 3 , Figure 10When the shield model is determined, the outer contour parameters (such as diameter, length, etc.) and the self-weight of the shield are known, and then a proper number of the devices are selected according to the outer contour parameters and the self-weight of the shield for use, such as 2-3 devices to support a shield of a shield tunneling machine at the same time. First, the device is hoisted to the construction ground at the starting position of the shield, and the device is evenly arranged along the axis direction of the shield and is horizontally installed on the construction ground; then, the worm and gear assembly 5 is controlled to drive the left support rod 401 and the right support rod 402 to move transversely on the upper bottom plate 2 to adjust the left support rod 401 and the right support rod 402 to be in a proper position, so that the central axis of the plane determined by the left support rod 401 and the right support rod 402 is located in the same vertical plane as the predetermined shield tunneling axis; then, the lifting height of the upper bottom plate 2 of the device is calculated according to the diameter of the shield to satisfy the condition that the height of the shield axis after the shield is hoisted to the device is consistent with the height of the predetermined shield tunneling axis; then, the jacking assembly 3 is controlled to be synchronously jacked to adjust the upper bottom plate 2 to rise to the calculated lifting height, and then the shield is hoisted above the device and is slowly lowered onto the left support rod 401 and the right support rod 402, so that the left support rod 401 and the right support rod 402 cooperate with each other to support the shield of the shield tunneling machine from both sides of the bottom of the shield. Due to system error or human error, the shield after the first hoisting may not meet the predetermined starting requirements; therefore, the axis position and the axis height of the installed shield usually need to be reviewed, and if the axis position and the axis height of the shield do not meet the design parameters of the shield starting, the shield can be hoisted, the position of the left support rod 401 and the right support rod 402 is adjusted according to the measured system error or human error through the worm and gear assembly 5, and the lifting height of the upper bottom plate 2 is adjusted through the jacking assembly 3, and then the shield is lowered.

[0054] In order to reduce the frictional force of the transverse movement of the left support column 401 and the right support column 402 and maintain the relative stability of the left support column 401 and the right support column 402, further, in a preferred embodiment, referring to Figures 1 to 3 The device further comprises two support groove plates 6 arranged at the front and rear ends of the upper bottom plate 2 and parallel to each other, the support groove plates 6 are provided with wheel grooves 601, and the two ends of the left support column 401 and the right support column 402 are provided with pulley blocks 403 which can be embedded in the wheel grooves 601 to slide transversely, so that the left support column 401 and the right support column 402 can move transversely on the support groove plates 6.

[0055] In order to enable the pulley block 403 to stably support the left support column 401 or the right support column 402 to slide, further, in a preferred embodiment, referring to Figure 1 The pulley block 403 is two steel pulleys connected in parallel along the groove direction of the wheel groove 601.

[0056] When adjusting the position of the left support column 401 or the right support column 402, the pulley set 403 can be detached from the wheel groove 601 from the side during sliding, especially when the shield body is lowered onto the left support column 401 or the right support column 402, the pulley set 403 can be subjected to a large lateral force, thereby further increasing the risk of the pulley set 403 being detached from the wheel groove 601 from the side. In order to solve this problem, preferably, the steel pulley is a concave pulley, and the upper and lower groove edges of the wheel groove 601 are embedded into the upper and lower concave surfaces of the steel pulley.

[0057] Further, in a preferred embodiment, the number of jacking assemblies 3 is four, which are respectively arranged at the four corner ends between the upper bottom plate 2 and the lower bottom plate 1.

[0058] Further, in a preferred embodiment, referring to Figure 1 、 Figure 4 and Figure 8 , the left worm gear 501 and the right worm gear 502 each include a box body 503 fixedly arranged on the upper bottom plate 2, a worm gear 504 and a worm 505 arranged in the box body 503, and the worm gear 504 and the worm 505 are in transmission connection; wherein one end of the worm 505 of the left worm gear 501 is provided with a hand crank 506, and one end of a transmission shaft of the worm gear 504 is connected with the left support column 401 through screw threads; one end of the worm 505 of the right worm gear 502 is provided with a hand crank 506, and one end of a transmission shaft of the worm gear 504 is connected with the right support column 402 through screw threads; when it is needed to move the left support column 401 horizontally, the hand crank 506 on the left worm gear 501 can be rotated, the hand crank 506 drives the worm 505 to rotate, the worm 505 drives the worm gear 504 to rotate, the worm gear 504 drives the worm gear transmission shaft 5041 to rotate, and then the worm gear transmission shaft drives the left support column 401 to move horizontally through screw threads; similarly, when it is needed to move the right support column 402 horizontally, the hand crank 506 on the right worm gear 502 can be rotated, the hand crank 506 drives the worm 505 to rotate, the worm 505 drives the worm gear 504 to rotate, the worm gear 504 drives the worm gear transmission shaft 5041 to rotate, and then the worm gear transmission shaft drives the right support column 402 to move horizontally through screw threads.

[0059] Since the left support column 401 and the right support column 402 are force receiving components in direct contact with the shield body, in order to ensure the strength and the overall stress stability of the left support column 401 and the right support column 402, further, in a preferred embodiment, referring to Figure 9The left support column 401 and the right support column 402 each comprise two side plates 404, a top plate 405 connected between the upper edges of the two side plates 404, a bottom plate 406 connected between the lower edges of the two side plates 404, a solid support column 407 arranged between the middle positions of the top plate 405 and the bottom plate 406, two rib plates 408 arranged on the two sides of the solid support column 407, and a pulley rotating shaft 411 arranged through the solid support column 407 and the two side plates 404 in a freely rotatable manner; the two ends of the pulley rotating shaft 411 are fixedly connected with the pulleys in the pulley block 403; when the left support column 401 and the right support column 402 move horizontally, the pulley rotating shaft 411 is rotated by the pulley; due to the gravity of the left support column 401 and the right support column 402, the rotation of the pulley rotating shaft 411 will be resisted by a non-negligible frictional force, so the frictional force should be reduced as much as possible; since the pulley rotating shaft 411 is arranged between the side plates 404 and the solid support column 407 and does not contact the left support column 401 and the right support column 402 (i.e., does not contact the rib plates 408), no additional frictional force is generated; and the pulley rotating shaft 411 is arranged through the solid support column 407 and the two side plates 404, the solid support column 407 is of a solid structure and mainly transmits the horizontal and vertical forces after the shield body is lowered, and the two side plates 404 on the two sides are supported and matched, so that the forces generated after the shield body is lowered are uniformly applied to the left support column 401 or the right support column 402.

[0060] Further, in a preferred embodiment, referring to Figure 1 and Figure 9 a transmission shaft screw hole 4071 is formed in the interior of the solid support column 407, and one end of a worm transmission shaft 5041 is connected with the transmission shaft screw hole 4071 through screw threads; that is, one end of the worm transmission shaft 5041 in the left worm gear 501 is connected with the screw hole 4071 in the left support column 401 through screw threads, and one end of the worm transmission shaft 5041 in the right worm gear 502 is connected with the screw hole 4071 in the right worm gear 502 through screw threads.

[0061] Further, in a preferred embodiment, referring to Figure 1 and Figure 9 the top plate 405 in the left support column 401 and the top plate 405 in the right support column 402 are each arranged in an inclined manner and the two top plates 405 as a whole are arranged in an inverted eight-character shape, so that the top plates 405 can better contact the shield body of the shield tunneling machine and support the force.

[0062] Further, in a preferred embodiment, referring to Figure 1 and Figure 9The upper surface of the top plate 405 on the left supporting column 401 and the top plate 405 on the right supporting column 402 is provided with mutually symmetrical trapezoidal force columns 409, and the top of the trapezoidal force column 409 is fixedly connected with a rubber buffer strip 410 with an arc-shaped top surface; based on the structure, the rubber buffer strip 410 can reduce the abrasion of the left supporting column 401 and the right supporting column 402 on the contact part of the shield body when supporting the force, and the combined action of the rubber buffer strip 410 and the trapezoidal force column 409 can play a role in buffering the force.

[0063] In actual construction, when the left supporting column 401 and the right supporting column 402 cooperate to support the shield body, the shield body will generate a transverse force on the supporting column; although the worm gear transmission shaft is connected with the screw hole through the thread, and the worm gear transmission has a reverse self-locking function, but due to the large weight of the shield body, when the left supporting column 401 and the right supporting column 402 are subjected to a strong transverse force, the worm gear transmission shaft will be strongly pressed and rotated, thereby generating a danger, in order to solve the problem, further, in a preferred embodiment, please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , the device further comprises a transverse supporting and reinforcing assembly 7.

[0064] The transverse supporting and reinforcing assembly 7 comprises a transverse supporting and reinforcing plate 701 fixedly arranged at both ends of the two supporting groove plates 6, a gear set 702, a brake friction plate 703 coaxially fixedly connected with the gear in the gear set 702, a left connecting rod 704, a right connecting rod 705, a shield body pressing plate 706 arranged directly above the supporting and reinforcing plate 701, a pressing plate return assembly 707, and a brake plate 708 connected to the bottom of the shield body pressing plate 706 and cooperating with the brake friction plate 703 to brake the gear in the gear set 702; the pressing plate return assembly 707 is connected between the shield body pressing plate 706 and the supporting and reinforcing plate 701, and is used to lift the shield body pressing plate 706 and the brake plate 708 when the shield body pressing plate 706 is not subjected to the pressure of the shield body, so that the brake plate 708 does not contact the brake friction plate 703, thereby not affecting the transverse position adjustment of the left supporting column 401 and the right supporting column 402.

[0065] The gear set 702 comprises a left contact gear 7021 and a right contact gear 7022 horizontally and transversely arranged on the supporting and reinforcing plate 701; one end of the left connecting rod 704 is fixedly connected with the left supporting column 401, and the other end is toothedly connected with the left contact gear 7021; one end of the right connecting rod 705 is fixedly connected with the right supporting column 402, and the other end is toothedly connected with the right contact gear 7022.

[0066] Based on the above structure, on the one hand, the transverse support reinforcing assembly 7 can support the shield body from the bottom of the shield body, thereby dispersing part of the gravity of the shield body to reduce the transverse force of the shield body on the left support column 401 and the right support column 402, so that the left support column 401, the right support column 402 and the transverse support reinforcing assembly 7 cooperate with each other to achieve more stable and safe support of the shield body; on the other hand, through the cooperation of the left connecting rod 704, the left connecting gear 7021, the brake friction plate 703, the brake pad 708, the shield body pressing plate 706 and the left support column 401, through the cooperation of the right connecting rod 705, the right connecting gear 7022, the brake friction plate 703, the brake pad 708, the shield body pressing plate 706 and the right support column 402, when the shield body is not lowered onto the shield body pressing plate 706, that is, when the shield body pressing plate 706 is not under external force, due to the action of the pressing plate return assembly 707, the shield body pressing plate 706 and the brake pad 708 will be lifted upward, so that the shield body pressing plate 706 and the brake pad 708 return to the initial position under the force-free state, at this time the brake pad 708 will not contact the brake friction plate 703, and the left connecting gear 7021 and the right connecting gear 7022 can rotate freely, so that the left support column 401 and the right support column 402 can still be adjusted by the left worm gear 501 and the right worm gear 502. When the shield body is lowered onto the shield body pressing plate 706, the brake pad 708 will be in contact with the brake friction plate 703 under strong downward pressure, thereby limiting the rotation of the left connecting gear 7021 and the right connecting gear 7022, and then the left connecting rod 704 and the right connecting rod 705 can be used to fix and limit the left support column 401 and the right support column 402 respectively, thereby resisting part of the transverse force of the shield body weight on the left support column 401 and the right support column 402 to prevent accidental transverse movement of the left support column 401 and the right support column 402 and cause safety accidents, and also effectively protect the connection structure of the worm gear transmission component.

[0067] Further, in a specific embodiment, please refer to Figure 7 The pressing plate return assembly 707 includes a return fixed column fixedly connected to the transverse support reinforcing plate 701 at the lower end, a return movable column 7072 fixedly connected to the shield body pressing plate 706 at the upper end, and a return spring sleeved around the outer periphery of the return movable column 7072. The upper end of the return spring is connected to the shield body pressing plate 706, and the lower end is connected to the top of the return fixed column.

[0068] In the present application, the left support column 401 and the right support column 402 can be adjusted laterally, so that after the left support column 401 and the right support column 402 are adjusted laterally, the shield body should be ideally mainly supported symmetrically from both sides by the left support column 401 and the right support column 402, and the lateral support strengthening assembly 7 only shares a small part of the gravity of the shield body, and at the same time, the shield body pressing plate 706 is pressed down by the gravity of the shield body to make the brake pad 708 contact the brake friction plate 703, and then the left connecting rod 704 and the right connecting rod 705 are used to fix and limit the left support column 401 and the right support column 402 respectively, so as to resist a part of the lateral force of the shield body self-weight acting on the left support column 401 and the right support column 402, thereby reducing the stress load of the worm and gear; however, during the implementation of the construction, it is also possible that the shield body is only supported from the bottom by the lateral support strengthening assembly 7, and the left support column 401 and the right support column 402 are not stressed or only one side is stressed, at this time the shield body cannot be stably supported on the device of the present application, thereby causing safety risks and hidden dangers; based on this, the applicant hopes that the lateral support strengthening assembly 7 has the function of adapting to the lateral position change of the left support column 401 and the right support column 402, so that the left support column 401, the right support column 402 and the lateral support strengthening assembly 7 can all effectively contact the shield body and play their respective roles; in view of the above problems, further, in a preferred embodiment, the brake pad 708 is connected to the bottom of the shield body pressing plate 706 through an elastic expansion piece 7081; specifically, the elastic expansion piece 7081 includes a brake pad fixed column 7082 fixedly connected to the bottom of the brake pad 708, a brake pad movable column 7083 which is up and down inserted with the brake pad fixed column 7082 and is fixedly connected to the top of the shield body pressing plate 706, and an expansion spring 7084 sleeved outside the brake pad movable column 7083; obviously, in order to make the left contact gear 7021 and the right contact gear 7022 unable to rotate freely after the brake pad 708 contacts the brake friction plate 703, the brake pad movable column 7083 cannot rotate laterally relative to the brake pad fixed column 7082; based on the above structure, through the cooperation of the elastic expansion piece 7081 and the pressing plate return assembly 707, only the extension stroke of the elastic expansion piece 7081 and the pressing plate return assembly 707 needs to be controlled, so that after the shield body is lowered, the shield body is symmetrically supported from both sides by the left support column 401 and the right support column 402, and the lateral support strengthening assembly 7 can also contact the bottom of the shield body, share a small part of the gravity of the shield body, and at the same time, the brake pad 708 contacts the brake friction plate 703 to brake the gear set.

[0069] Since the height of the device is controlled by the jacking assembly, when the shield body is supported, the gravity of the shield body is transmitted to the lower bottom plate 1 through the jacking assembly. Although the jacking assembly 3 can adopt a self-locking hydraulic jack or a screw jack with a self-locking function, due to the large weight of the shield body, in order to reduce the uncontrollable risk caused by the transmission and support stress of the jacking assembly alone, further, in a preferred embodiment, the device further comprises a longitudinal support reinforcing assembly 8.

[0070] The longitudinal support reinforcing assembly 8 comprises two upper pressing blocks 801 fixedly arranged on the bottom surface of the upper bottom plate 2 on both sides, two lower top blocks 802 fixedly arranged on the top surface of the lower bottom plate 1 on both sides, a wedge block 803 arranged between the upper pressing blocks 801 and the lower top blocks 802 on the same side, a pull rod 804 movably arranged through the wedge block 803, and fastening bolts 805 arranged at both ends of the pull rod 804; the upper pressing blocks 801 and the lower top blocks 802 are matched in an upper and lower manner to form a wedge block clamping groove 806 in the shape of an isosceles trapezoid, the wedge block 803 is freely inserted into the wedge block clamping groove 806 in a transverse manner, and the pull rod 804 and the fastening bolts 805 are matched to pull and lock the wedge blocks 803 on both sides of the pull rod 804, so that the upper pressing blocks 801, the wedge blocks 803 and the lower top blocks 802 form an integral support stress structure.

[0071] Based on the above structure, after the upper bottom plate 2 is lifted by the jacking assembly 3, the upper pressing blocks 801 and the lower top blocks 802 are away from each other, then the wedge blocks 803 can be inserted into the wedge block clamping groove 806 in a transverse manner from both sides of the lower bottom plate 1, so that the wedge blocks 803 and the wedge block clamping groove 806 are matched, then the fastening bolts 805 at both ends of the pull rod 804 are tightened, so that the upper pressing blocks 801, the wedge blocks 803 and the lower top blocks 802 form an integral support stress structure, which is used to resist the gravity transmitted downward by the shield body together with the jacking assembly 3, so as to reduce the stress load of the jacking assembly 3.

[0072] Further, in a preferred embodiment, the jacking assembly 3 is a jack, preferably a self-locking hydraulic jack or a screw jack.

Claims

1. A shield launching end tunnel entry posture adjustment control device, comprising a lower base plate (1), characterized in that Also include: The upper bottom plate (2) is arranged above the lower bottom plate (1); The jacking assembly (3) is connected between the lower bottom plate (1) and the upper bottom plate (2), which is used to synchronously jack up the upper bottom plate (2); The shield body support assembly (4) includes left and right support columns (401) and (402) arranged on the upper bottom plate (2) in parallel and transversely movable, and the left and right support columns (401) and (402) are matched to support the shield body; The worm gear assembly (5) includes left and right worm gears (501) and (502) arranged at the left and right ends of the top surface of the upper bottom plate (2) respectively, and the left and right worm gears (501) and (502) drive the left and right support columns (401) and (402) to move transversely on the upper bottom plate (2) through worm gear transmission respectively; Two support groove plates (6) are arranged at the front and rear ends of the upper bottom plate (2) and in parallel, the support groove plate (6) is provided with a wheel groove (601), both ends of the left and right support columns (401) and (402) are provided with a pulley block (403), the pulley block (403) can be embedded in the wheel groove (601) to slide transversely, so that the left and right support columns (401) and (402) can move transversely on the support groove plate (6); the pulley block (403) is two steel pulleys connected in parallel along the groove direction of the wheel groove (601); The transverse support reinforcement assembly (7) includes a transverse support reinforcement plate (701) fixedly arranged at both ends of the two support groove plates (6) respectively, a gear set (702), a brake friction plate (703) coaxially fixedly connected with the gear in the gear set (702), a left connecting rod (704), a right connecting rod (705), a shield body pressing plate (706) arranged directly above the support reinforcement plate (701), a pressing plate return assembly (707) connected between the shield body pressing plate (706) and the support reinforcement plate (701), a brake plate (708) connected to the bottom of the shield body pressing plate and matched with the brake friction plate (703) to brake the gear in the gear set (702); the gear set (702) includes left and right contact gears (7021) and (7022) arranged horizontally and transversely on the support reinforcement plate (701); one end of the left connecting rod (704) is fixedly connected with the left support column (401), and the other end is toothedly connected with the left contact gear (7021); one end of the right connecting rod (705) is fixedly connected with the right support column (402), and the other end is toothedly connected with the right contact gear (7022).

2. The control device for adjusting the tunnel launching pose according to claim 1, wherein, The left worm gear (501) and the right worm gear (502) each comprise a box (503) fixedly arranged on the upper bottom plate (2), a worm gear (504) and a worm (505) arranged in the box (503); wherein the worm (505) of the left worm gear (501) is provided with a hand crank (506) at one end, and the transmission shaft of the worm gear (504) is connected with the left support column (401) at one end through screw thread; the worm (505) of the right worm gear (502) is provided with a hand crank (506) at one end, and the transmission shaft of the worm gear (504) is connected with the right support column (402) at one end through screw thread.

3. The control device for adjusting the tunnel launching posture according to claim 1, wherein The left support column (401) and the right support column (402) each comprise two side plates (404), a top plate (405) connected between the two side plates (404), a bottom plate (406) connected between the lower edges of the two side plates (404), a solid support column (407) arranged between the middle positions of the top plate (405) and the bottom plate (406), two rib plates (408) arranged on both sides of the solid support column (407), and a pulley rotating shaft (411) freely rotatably arranged through the solid support column (407) and the two side plates (404).

4. The control device for adjusting the tunnel launching posture according to claim 3, wherein The top plate (405) in the left support column (401) and the top plate (405) in the right support column (402) are each arranged obliquely and integrally in an inverted V shape.

5. The control device for adjusting the tunnel launching posture according to claim 4, wherein The top surfaces of the top plates (405) on the left support column (401) and the right support column (402) are provided with mutually symmetrical trapezoidal force columns (409), and the top portions of the trapezoidal force columns (409) are fixedly connected with rubber buffer strips (410) with arc-shaped top surfaces.

6. The control device for adjusting the tunnel launching posture according to claim 1, wherein It also comprises a longitudinal support reinforcing assembly (8). The longitudinal support reinforcing assembly (8) comprises two upper pressing blocks (801) fixedly arranged on the bottom surfaces of the two sides of the upper bottom plate (2), two lower pressing blocks (802) fixedly arranged on the top surfaces of the two sides of the lower bottom plate (1), a wedge block (803) arranged between the upper pressing block (801) and the lower pressing block (802) on the same side, a pull rod (804) movably arranged through the wedge block (803), and fastening bolts (805) arranged at the two ends of the pull rod (804); the upper pressing block (801) and the lower pressing block (802) are arranged in a trapezoidal shape in cooperation, and the wedge block (803) is freely movably inserted into the wedge block clamping groove (806).

7. The control device for adjusting the tunnel launching posture according to claim 1, wherein The jacking assembly (3) is a jack.

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