CN217841651U - Adjusting and controlling device for tunnel entering posture of shield initial end - Google Patents

Abstract

The utility model provides a shield constructs regulation and control device of initiating terminal entering hole gesture, including the lower plate, still include: an upper base plate; a jacking assembly; the shield body supporting assembly comprises a left supporting column and a right supporting column which are arranged on the upper bottom plate in parallel, pulley blocks are arranged at two ends of the left supporting column and the right supporting column, and the pulley blocks can be embedded into the pulley grooves to transversely slide so that the left supporting column and the right supporting column can transversely move on the supporting groove plates and are matched with each other to support the shield body; the worm and gear assembly comprises a left worm and gear and a right worm and gear which are respectively arranged at the left end and the right end of the top surface of the upper bottom plate, and the left worm and gear and the right worm and gear respectively drive the left supporting rod and the right supporting rod to transversely move on the upper bottom plate through the transmission of the worm and gear; and the two supporting groove plates are arranged at the front end and the rear end of the upper bottom plate and are parallel to each other, and the supporting groove plates are provided with wheel grooves. The utility model discloses can regard as the support of the shield body and stack the base, can adapt to the shield body of the shield machine of different models and place and adjust, can adapt to the requirement that the shield machine originated under the different conditions simultaneously.

Description

Adjusting and controlling device for tunnel entering posture of shield initial end

Technical Field

The utility model belongs to the technical field of the shield structure equipment of starting, particularly, relate to a shield structure starting end advances regulation and control device of hole gesture.

Background

The shield body of the shield machine is a high-strength high-density member, the engineering quality requirement is high, the outer contour surface is similar to a standard circular curved surface structure, the self weight is large, and the self weight can reach about 500 tons. The transportation and the stacking of the shield tunneling machine all need large equipment for hoisting, when shield construction is carried out on site, sometimes, due to different site initial conditions, such as different left and right heights or the need of going to another site for reuse, the shield launching device with the designed height cannot enable the axial height of the shield body to be consistent with the preset shield tunneling height, and usually, site personnel can remove one part of the height of one side and weld again, so that the accuracy is difficult to meet the requirement, and the target requirement can be met only by multiple times of measurement, calculation and even multiple times of welding.

SUMMERY OF THE UTILITY MODEL

For solving the difficult problem of job site, the utility model provides a shield constructs originated regulation and control device that sends out terminal entering hole gesture, it can regard as the support of the shield body and stack the base, can adapt to the shield body of the shield machine of different models and place and adjust, can adapt to the requirement that the shield machine originated under the different conditions simultaneously.

The adjusting and controlling device for the tunnel-entering posture of the shield initiating end comprises a lower bottom plate and is characterized by further comprising:

the upper bottom plate is arranged above the lower bottom plate;

the jacking assembly is connected between the lower bottom plate and the upper bottom plate and used for synchronously jacking the upper bottom plate;

the shield body supporting assembly comprises a left supporting column and a right supporting column which are arranged on the upper bottom plate in parallel, pulley blocks are arranged at two ends of the left supporting column and the right supporting column, and the pulley blocks can be embedded into the pulley grooves to slide transversely so that the left supporting column and the right supporting column can move transversely on the supporting groove plates and are matched with each other to support the shield body;

the left worm gear and the right worm gear respectively drive the left support rod and the right support rod to transversely move on the upper bottom plate through the transmission of the worm gears and the worms; and the number of the first and second groups,

two parallel supporting groove plates are arranged at the front end and the rear end of the upper bottom plate, and wheel grooves are arranged on the supporting groove plates.

As a specific technical scheme, the pulley block is two steel pulleys which are connected in series in parallel along the pulley groove direction.

As a specific technical scheme, the left worm gear and the right worm gear comprise a box body fixedly arranged on an upper bottom plate, and a worm gear and a worm arranged in the box body; one end of a worm of the left worm gear is provided with a crank, and one end of a worm gear transmission shaft is connected with the left support rod through threads; one end of the worm of the right worm gear is provided with a crank handle, and one end of the worm gear transmission shaft is connected with the right support rod through threads.

As a specific technical scheme, left branch dagger and right branch dagger all include two blocks of curb plates, connect the roof between two blocks of curb plates upper limbs, connect the bottom plate between two blocks of curb plate edges, set up the solid support post between roof and bottom plate middle part position, set up in two blocks of floor of solid support post both sides, but the pulley pivot that runs through and set up in solid support post and two blocks of curb plates of free rotation.

As a specific technical scheme, the top plate in the left supporting column and the top plate in the right supporting column are both obliquely arranged and are integrally inverted splayed.

As a specific technical scheme, trapezoidal stress columns which are symmetrical to each other are arranged on the top plate on the left supporting column and the top plate on the right supporting column, and the top fixedly connected with top surfaces of the trapezoidal stress columns are arc-shaped rubber buffer strips.

As a specific technical scheme, the utility model discloses the device still includes: a transverse support reinforcement assembly;

the transverse supporting and reinforcing assembly comprises transverse supporting and reinforcing plates, a gear set, a brake friction plate, a left connecting rod, a right connecting rod, a shield body pressing plate, a pressing plate returning assembly and a brake plate, wherein the two ends of the transverse supporting and reinforcing plates are fixedly arranged on the two supporting groove plates respectively;

the gear set comprises a left connecting gear (7021) and a right connecting gear which are horizontally and transversely arranged on the supporting reinforcing plate in a rotating mode; one end of the left connecting rod is fixedly connected with the left supporting column, and the other end of the left connecting rod is in meshed connection with the left connecting gear; one end of the right connecting rod is fixedly connected with the right supporting column, and the other end of the right connecting rod is in meshed connection with the right contact gear.

As a specific technical proposal, the device of the utility model also comprises a longitudinal support reinforcing component;

the longitudinal support reinforcement assembly comprises: the device comprises two upper pressing blocks, two lower ejecting blocks, a wedge block, a pull rod and fastening bolts, wherein the two upper pressing blocks are fixedly arranged on two sides of the bottom surface of an upper bottom plate respectively, the two lower ejecting blocks are fixedly arranged on two sides of the top surface of a lower bottom plate respectively, the wedge block is arranged between the upper pressing block and the lower ejecting block on the same side, the pull rod can transversely move and penetrate through the wedge block, and the fastening bolts are arranged at two ends of the pull rod; the upper pressing block and the lower ejecting block are vertically matched to form an isosceles trapezoid-shaped wedge block clamping groove, and the wedge block can be freely and transversely inserted into the wedge block clamping groove.

As a specific technical scheme, the jacking assembly is a jack.

The utility model has the advantages as follows:

1) The utility model discloses device accessible worm gear subassembly, shield body supporting component and jacking subassembly cooperate to can adjust originating height and axis position after the shield body of shield constructs the machine is transferred in a flexible way, so that the support of the shield body with stack and satisfy originating design requirement.

2) The utility model discloses a horizontal support reinforcing component and shield body supporting component mutually support, when not influencing through left branch dagger, right branch dagger regulation shield body axis position, can also share partial shield body's dead weight to reduce the shield body to the horizontal effort of left branch dagger, right branch dagger, thereby can alleviate worm gear driven atress load, protect each connecting piece structure safety; and, the utility model discloses the device is transferred at the shield body after, but the lateral bracing reinforce assembly of automatic triggering acts on left branch dagger, right branch dagger, through the cooperation of well braking piece, brake friction piece, connecting rod and gear train, can carry out spacing fixed to left branch dagger, right branch dagger to can further resist the lateral force that some shield body dead weight produced left branch dagger and right branch dagger, and then improve equipment's life and security.

3) The utility model discloses a subassembly and jacking subassembly are mutually supported in longitudinal support enhancement to can resist the gravity of the downward transmission of the shield body with the jacking subassembly jointly, reduced the atress load of jacking subassembly, guaranteed the utility model discloses install the stability and the security of vertical atress.

Drawings

FIG. 1 is a front view of the device of the present invention;

fig. 2 is a left side view of the device of the present invention;

FIG. 3 is a top view of the device of the present invention;

FIG. 4 is a top view of the device of the present invention (omitting the shield body clamp plate, the clamp plate return assembly and the brake pad);

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is a cross-sectional view of C-C of FIG. 1;

FIG. 7 is an enlarged schematic view at A of FIG. 1;

FIG. 8 is a schematic structural view of the left worm gear and the right worm gear in the device of the present invention;

fig. 9 is a schematic structural view of a left support column and a right support column of the present invention;

FIG. 10 is a schematic view of the present invention in use;

the meanings of the marks in the above figures are as follows:

1-a lower bottom plate;

2-upper base plate;

3-jacking the assembly;

4-shield body support component, 401-left support column, 402-right support column, 403-pulley block, 4031-steel pulley, 404-side plate, 405-top plate, 406-bottom plate, 407-solid support column, 408-ribbed plate, 409-trapezoidal stress column and 410-rubber buffer strip;

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-crank;

6-supporting groove plate, 601-wheel groove;

7-transverse support reinforcing component, 701-transverse support reinforcing plate, 702-gear set, 7021-left connecting gear, 7022-right connecting gear, 703-brake friction plate, 704-left connecting rod, 705-right connecting rod, 706-shield pressing plate, 707-pressing plate returning component and 708-brake plate;

8-longitudinal support reinforcing component, 801-upper pressing block, 802-lower top block, 803-wedge block, 804-pull rod, 805-fastening bolt and 806-trapezoidal clamping groove L

9-shield body.

5. Detailed description of the preferred embodiments

The present invention will be further described in the following with reference to the accompanying drawings in the form of specific embodiments, and it should be noted that the following embodiments are illustrative of the present invention by way of example, but the scope of the present invention is not limited thereto, and all those skilled in the art can replace the equivalent of the present invention with the spirit of the present invention.

Examples

Referring to fig. 1 to 3, the device for adjusting and controlling the attitude of the shield initiating end into the tunnel includes

A lower base plate 1;

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 and used for synchronously jacking the upper bottom plate 2;

the shield body supporting assembly 4 comprises a left supporting column 401 and a right supporting column 402 which are parallel to each other and can be transversely arranged on the upper base plate 2 in a moving mode, and the left supporting column 401 and the right supporting column 402 are matched with each other to support a shield body;

the worm and gear assembly 5 comprises a left worm and gear 501 and a right worm and gear 502 which are respectively arranged at the left end and the right end of the top surface of the upper bottom plate 2, and the left worm and gear 501 and the right worm and gear 502 respectively drive the left support rod 401 and the right support rod 402 to transversely move on the upper bottom plate 2 through the rotation of the worms;

based on the structure, the utility model discloses shield structure initiating terminal advances regulation and control device of hole gesture's working process or principle as follows:

referring to fig. 1 to 3 and fig. 10, after the model of the shield body is determined, the outer contour parameters (such as diameter, length, etc.) and the self-weight can be known, and then an appropriate number of the devices of the present invention can be selected according to the outer contour parameters and the self-weight of the shield body for use, such as 2-3 devices of the present invention, to support a shield body of the shield machine. Firstly, the device is hoisted to the construction ground at the starting position of the shield, so that the device is uniformly arranged along the axis direction of the shield and is horizontally arranged on the construction ground; then, controlling the worm gear assembly 5 to drive the left support rod 401 and the right support rod 402 to move transversely on the upper base plate 2 so as to adjust the left support rod 401 and the right support rod 402 to be in proper positions, so that the central axis of the plane determined by the left support rod 401 and the right support rod 402 is positioned on the same vertical plane with the preset shield tunneling axis; then, the lifting height required by the upper bottom plate 2 of the device can be calculated according to the diameter of the shield body, so that the axial height of the shield body is consistent with the preset shield tunneling axial height after the shield body is hoisted to the device; afterwards, control jacking subassembly 3 synchronous jacking to the lifting height that calculates is risen to adjustment upper plate 2, then with the shield body hoist and mount extremely the utility model discloses the device top is slowly transferred to left branch vaulting pole 401 and right branch vaulting pole 402 on, makes left branch vaulting pole 401 and right branch vaulting pole 402 mutually support, supports the shield body from shield body bottom both sides. Due to systematic errors or human errors, the shield body after being hoisted for the first time may not meet the predetermined originating requirement; therefore, the axial line position and the axial line height of the installed shield body are usually required to be checked, if the axial line position and the axial line height of the shield body do not accord with the design parameters of the shield machine starting, the shield body can be lifted, the positions of the left supporting rod 401 and the right supporting rod 402 are adjusted through the worm and gear assembly 5 according to the measured system error or human error, the lifting height of the upper bottom plate 2 is adjusted through the jacking assembly 3, and then the shield body is placed downwards.

In order to reduce the friction force of the lateral movement of the left support column 401 and the right support column 402, and simultaneously keep the relative stability of the left support column 401 and the right support column 402, further, in a preferred embodiment, please refer to fig. 1 to 3, the device of the present invention further includes two support slot plates 6 disposed at the front and rear ends of the upper base plate 2 and parallel to each other, the support slot plates 6 are provided with wheel slots 601, the two ends of the left support column 401 and the right support column 402 are provided with pulley blocks 403, and the pulley blocks 403 can be inserted into the wheel slots 601 to slide laterally, so that the left support column 401 and the right support column 402 can move laterally on the support slot plates 6.

In order to make the pulley block 403 smoothly support the left support column 401 or the right support column 402 for sliding, further, in a preferred embodiment, referring to fig. 1, the pulley block 403 is two steel pulleys 4031 connected in series in parallel along the groove of the pulley groove 601.

In order to solve the problem that the pulley block 403 may be laterally separated from the wheel groove 601 during sliding of the pulley block 403 when the left support column 401 or the right support column 402 is adjusted, particularly when the shield body is lowered onto the left support column 401 or the right support column 402, the pulley block 403 may be subjected to a large lateral force, so that the risk that the pulley block 403 is laterally separated from the wheel groove 601 is further increased, preferably, the steel pulley 4031 is a concave wheel, and upper and lower groove edges of the wheel groove 601 are embedded into upper and lower concave surfaces of the steel pulley 4031.

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

Further, in a preferred embodiment, referring to fig. 1, 4 and 8, each of the left worm gear 501 and the right worm gear 502 includes a box 503 fixedly disposed on the upper bottom plate 2, a worm wheel 504 and a worm 505 disposed in the box 503; the worm wheel 504 is in transmission connection with a worm 505; one end of a worm 505 of the left worm gear 501 is provided with a crank 506, and one end of a transmission shaft of a worm wheel 504 is connected with the left support rod 401 through threads; one end of a worm 505 of the right worm and gear 502 is provided with a hand crank 506, and one end of a transmission shaft of a worm wheel 504 is connected with the right supporting rod 402 through threads; when the left support column 401 needs to move transversely, 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 wheel 504 to rotate, the worm wheel 504 drives the worm wheel transmission shaft 5041 to rotate, and the worm wheel transmission shaft drives the left support column 401 to move transversely through threads; similarly, when the right support pillar 402 needs to be moved transversely, 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 wheel 504 to rotate, the worm wheel 504 drives the worm wheel transmission shaft 5041 to rotate, and then the worm wheel transmission shaft drives the right support pillar 402 to move transversely through the threads.

Because the left support column 401 and the right support column 402 are stressed components in direct contact with the shield body, in order to ensure the strength and the tidying stress stability of the left support column 401 and the right support column 402, further, in a preferred embodiment, referring to fig. 9, each of the left support column 401 and the right support column 402 comprises 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 at two sides of the solid support column 407, and a pulley rotating shaft 411 freely rotatably penetrating through the solid support column 407 and the two side plates 404; two ends of the pulley rotating shaft 411 are fixedly connected with pulleys in the pulley block 403; when the left support column 401 and the right support column 402 move transversely, the pulley rotates to drive the pulley rotating shaft 411 to rotate; due to the gravity of the left support column 401 and the right support column 402, the pulley rotating shaft 411 is subjected to non-negligible friction assistance when rotating, so that the friction assistance is reduced as much as possible; since the pulley rotating shaft 411 is located between the side plate 404 and the solid supporting column 407 and does not contact with the left supporting column 401 and the right supporting column 402 (i.e., does not contact with the rib 408), no additional friction force is generated; the pulley rotating shaft 411 is arranged in the solid supporting column 407 and the two side plates 404 in a penetrating manner, the solid supporting column 407 is of a solid structure and mainly transmits horizontal and vertical stress after the shield body is lowered, and the side plates 404 on the two sides are used for supporting and matching, so that acting force generated after the shield body is lowered can be uniformly applied to the left supporting column 401 or the right supporting column 402.

Further, in a preferred embodiment, referring to fig. 1 and 9, the solid support posts 407 are formed with drive shaft screw holes 4071 on the inside thereof, and the worm gear drive shaft 5041 is connected to the drive shaft screw holes 4071 by a screw thread at one end thereof; that is, the worm drive shaft 5041 in the left worm 501 is threaded at one end to a threaded hole 4071 in the left support column 401, and the worm drive shaft 5041 in the right worm 502 is threaded at one end to a threaded hole 4071 in the right worm 502.

Further, in a preferred embodiment, referring to fig. 1 and 9, the top plate 405 of the left support column 401 and the top plate 405 of the right support column 402 are both inclined and have an inverted-splayed shape as a whole, so that the top plate 405 can better contact with the shield body of the shield mechanism to support the force.

Further, in a preferred embodiment, referring to fig. 1 and fig. 9, trapezoidal force-bearing columns 409 which are symmetrical to each other are arranged on the upper surfaces of the top plate 405 on the left supporting column 401 and the top plate 405 on the right supporting column 402, and rubber buffer strips 410 with arc-shaped top surfaces are fixedly connected to the tops of the trapezoidal force-bearing columns 409; based on the structure, the rubber buffer strip 410 can reduce the abrasion of the left support column 401 and the right support column 402 to the contact part of the shield body when the supports are stressed, and the combined action of the rubber buffer strip 410 and the trapezoidal stress column 409 can play a role in stress buffering.

In actual construction, when the left support column 401 and the right support column 402 are matched to support and stress the shield body, the shield body can generate transverse acting force on the support columns; although the worm gear transmission shaft is connected with the screw hole through a thread, and the worm gear transmission has a reverse self-locking function, since the shield self-weight is large, when the left support column 401 and the right support column 402 are subjected to a strong transverse acting force, the worm gear transmission shaft can be extruded by a strong force to rotate, so as to generate a danger, in order to solve the problem, further, in a preferred embodiment, please refer to fig. 1, fig. 3, fig. 4, fig. 5 and fig. 7, the device of the present invention further comprises: a transverse support reinforcement assembly 7;

the transverse supporting and reinforcing component 7 comprises a transverse supporting and reinforcing plate 701, a gear set 702, a brake friction plate 703, a left connecting rod 704, a right connecting rod 705, a shield pressing plate 706, a pressing plate return component 707 and a brake pad 708, wherein two ends of the transverse supporting and reinforcing plate 701 are fixedly arranged on the two supporting groove plates 6 respectively, the brake friction plate 703 is coaxially and fixedly connected with a gear in the gear set 702, the shield pressing plate 706 is arranged right above the supporting and reinforcing plate 701, and the brake pad 708 is connected to the bottom of the shield pressing plate 706 and is matched with the brake friction plate 703 to brake the gear in the gear set 702; the pressing plate returning assembly 707 is connected between the shield pressing plate 706 and the support reinforcing plate 701, and is used for lifting the shield pressing plate 706 and the brake plate 708 when the shield pressing plate 706 is not pressed by the shield, so that the brake plate 708 is not in contact with the brake friction plate 703, and the transverse position adjustment of the left supporting column 401 and the right supporting column 402 is not influenced;

the gear set 702 comprises a left contact gear 7021 and a right contact gear 7022 which are horizontally and transversely arranged on the supporting reinforcing plate 701 in a rotating manner; one end of the left connecting rod 704 is fixedly connected with the left supporting column 401, and the other end of the left connecting rod 704 is meshed with the left linkage gear 7021; one end of a right connecting rod 705 is fixedly connected with the right supporting column 402, and the other end of the right connecting rod is in meshed connection with a right contact gear 7022;

based on the structure, on one hand, the transverse support reinforcing component 7 can support the shield body from the bottom of the shield body, so that part of the gravity of the shield body can be dispersed, the transverse acting force of the shield body on the left supporting column 401 and the right supporting column 402 can be reduced, and therefore the shield body can be supported more stably and safely by the mutual matching of the left supporting column 401, the right supporting column 402 and the transverse support reinforcing component 7; on the other hand, through the mutual matching of the left connecting rod 704, the left connecting gear 7021, the brake friction sheet 703, the brake block 708, the shield body pressing plate 706 and the left supporting column 401, and through the mutual matching of the right connecting rod 705, the right connecting gear 7022, the brake friction sheet 703, the brake block 708, the shield body pressing plate 706 and the right supporting 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 subjected to external force, due to the action of the pressing plate returning assembly 707, the shield body pressing plate 706 and the brake block 708 will be lifted upwards, so that the shield body pressing plate 706 and the brake block 708 are restored to the initial positions in an unstressed state, and at this time, the brake block 708 will not contact with the brake friction sheet 703, and the left connecting gear 7021 and the right connecting gear 7022 can freely rotate, so that the left supporting column 401 and the right supporting column 402 can still be adjusted by the left worm gear 501 and the right worm gear 502 in a transverse movement; when the shield body is lowered onto the shield body pressing plate 706, the brake pad 708 is contacted with the brake friction plate 703 by a strong downward pressure, so that the rotation of the left contact gear 7021 and the right contact gear 7022 can be limited, and the left support column 401 and the right support column 402 can be respectively fixed and limited by the left connecting rod 704 and the right connecting rod 705, so that the transverse acting force generated by the self weight of a part of the shield body on the left support column 401 and the right support column 402 can be resisted, the safety accident caused by the accidental transverse movement of the left support column 401 and the right support column 402 can be prevented, and meanwhile, the connecting structure of a worm and gear transmission part can be effectively protected.

Further, in a specific embodiment, referring to fig. 7, the pressing plate returning component 707 includes a returning fixed column 7071 having a lower end fixedly connected to the lateral support reinforcing plate 701, a returning movable column 7072 having a lower end movably inserted into the returning fixed column 7071 to be lifted up and down and an upper end fixedly connected to the shield pressing plate 706, and a returning spring 7073 annularly sleeved on the periphery of the returning movable column 7072; the upper end of the return spring 7073 is connected with the shield pressing plate 706, and the lower end is connected with the top of the return fixing column 7071.

In the utility model, the left support column 401 and the right support column 402 can be adjusted by lateral movement, therefore, after the left support column 401 and the right support column 402 are adjusted laterally, the shield body should be supported symmetrically from both sides by the left support column 401 and the right support column 402 in an ideal state, and the lateral support reinforcing component 7 only plays a role in sharing a small part of gravity of the shield body, meanwhile, the shield body pressing plate 706 is pressed down by the gravity of the shield body to make the brake plate 708 contact with the brake friction plate 703, and then the left support column 401 and the right support column 402 are fixed and limited respectively by the left connecting rod 704 and the right connecting rod 705, so that the lateral acting force generated by the dead weight of a part of the shield body to the left support column 401 and the right support column 402 can be resisted, and the stress load of the worm gear is reduced; however, in the implementation, there may be a situation that the shield body is only supported from the bottom by the lateral support reinforcement assembly 7, and the left support column 401 and the right support column 402 are not stressed or only stressed on one side, and at this time, the shield body cannot be stably supported on the device of the present invention, so as to generate a safety risk and a hidden danger; based on this, the applicant expects the transverse support reinforcement assembly 7 to have the function of adapting to the transverse position change of the left support column 401 and the right support column 402, so that the shield left support column 401, the shield right support column 402 and the transverse support reinforcement assembly 7 can effectively contact with the shield body and play respective roles; further, in a preferred embodiment, the brake block 708 is connected to the bottom of the shield pressing plate 706 through a flexible telescopic member 7081; specifically, the elastic telescopic part 7081 comprises a brake pad fixing column 7082 of which the bottom end is fixedly connected with the brake pad 708, a brake pad moving column 7083 of which the lower end can be inserted with the brake pad fixing column 7082 in an up-and-down lifting manner and the upper end is fixedly connected with the shield pressing plate 706, and a telescopic spring 7084 sleeved on the periphery of the brake pad moving column 7083 in a sleeving manner; obviously, after the brake pad 708 is in contact with the brake friction plate 703, the left contact gear 7021 and the right contact gear 7022 cannot rotate freely, and the brake pad movable column 7083 cannot rotate transversely relative to the brake pad fixed column 7082; based on the structure, after the shield body is lowered, the shield body is symmetrically supported from two sides by the left supporting column 401 and the right supporting column 402 only by controlling the telescopic strokes of the elastic telescopic part 7081 and the pressing plate return assembly 707 through the matching of the elastic telescopic part 7081 and the pressing plate return assembly 707, the transverse support reinforcing assembly 7 can also be in contact with the bottom of the shield body, and the function that the braking piece 708 is in contact with the braking friction sheet 703 to brake the gear set is exerted while the small part of gravity of the shield body is shared.

Because the height of the device of the utility model is controlled by the jacking component, when bearing the shield body, the gravity of the shield body can be transmitted to the lower bottom plate 1 by the jacking component, although the jacking component 3 can adopt a self-locking hydraulic jack or a screw jack with self-locking function; however, because the shield self-weight is great, in order to reduce only to transmit and support the uncontrollable risk that the atress produced through jacking subassembly, further, in a preferred embodiment, the utility model discloses the device still includes: a longitudinal support reinforcement assembly 8;

the longitudinal support and reinforcement assembly 8 comprises: two upper pressing blocks 801 respectively and fixedly arranged at two sides of the bottom surface of the upper bottom plate 2, two lower ejecting blocks 802 respectively and fixedly arranged at two sides of the top surface of the lower bottom plate 1, a wedge 803 arranged between the upper pressing block 801 and the lower ejecting block 802 at the same side, a pull rod 804 which can transversely move and penetrates through the wedge 803, and fastening bolts 805 arranged at two ends of the pull rod 804; the upper pressing block 801 and the lower top block 802 are vertically matched to form an isosceles trapezoid-shaped wedge block clamping groove 806, the wedge 803 can be freely and movably inserted into the wedge block clamping groove 806 in the transverse direction, and the pull rod 804 is matched with the fastening bolt 805 to oppositely pull and lock the wedge 803 on two sides of the pull rod 804, so that the upper pressing block 801, the wedge 803 and the lower top block 802 form an integral supporting stress structure;

based on the above structure, after the upper bottom plate 2 is lifted by the jacking assembly 3, the upper pressing block 801 and the lower jacking block 802 are far away from each other, then the wedge 803 can be transversely inserted into the wedge clamping groove 806 from two sides of the lower bottom plate 1, so that the wedge 803 is fitted with the wedge clamping groove 806, and then the fastening bolts 805 at two ends of the pull rod 804 are screwed down, so that the upper pressing block 801, the wedge 803 and the lower jacking block 802 form an integral supporting stress structure to resist the downward transmitted gravity of the shield together with the jacking assembly 3, thereby reducing the stress load of the jacking assembly 3.

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

Claims (9)

1. The adjusting and controlling device of the tunnel entering posture of the shield initiating end comprises a lower bottom plate (1), and is characterized by further comprising:

the upper bottom plate (2), 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) and is used for synchronously jacking the upper bottom plate (2);

the shield body supporting assembly (4) comprises a left supporting column (401) and a right supporting column (402) which are arranged on the upper base plate (2) in parallel, pulley blocks (403) are arranged at two ends of the left supporting column (401) and the right supporting column (402), and the pulley blocks (403) can be embedded into the pulley grooves (601) to transversely slide so that the left supporting column (401) and the right supporting column (402) can transversely move on the supporting groove plates (6) and are matched with each other to support a shield body;

the worm and gear assembly (5), the worm and gear assembly (5) comprises a left worm and gear (501) and a right worm and gear (502) which are respectively arranged at the left end and the right end of the top surface of the upper bottom plate (2), and the left worm and gear (501) and the right worm and gear (502) respectively drive the left supporting column (401) and the right supporting column (402) to transversely move on the upper bottom plate (2) through worm and gear transmission; and the number of the first and second groups,

the two supporting groove plates (6) are arranged at the front end and the rear end of the upper base plate (2) and are parallel to each other, and wheel grooves (601) are formed in the supporting groove plates (6).

2. The device for regulating and controlling the attitude of a shield originating end into a hole according to claim 1, wherein the pulley block (403) comprises two steel pulleys (4031) connected in series in parallel along the grooves of the pulley groove (601).

3. The adjusting and controlling device for the tunnel-entering posture of the shield initiating terminal according to claim 1, characterized in that the left worm gear (501) and the right worm gear (502) each comprise a box body (503) fixedly arranged on the upper bottom plate (2), a worm wheel (504) and a worm (505) arranged in the box body (503); one end of a 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 threads; one end of a worm (505) of the right worm gear (502) is provided with a hand crank (506), and one end of a worm gear (504) transmission shaft is connected with the right support column (402) through threads.

4. The adjusting and controlling device for the tunnel entering posture of the shield initiating terminal according to claim 1, wherein the left supporting column (401) and the right supporting 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 supporting column (407) arranged between the middle positions of the top plate (405) and the bottom plate (406), two ribbed plates (408) arranged at two sides of the solid supporting column (407), and a pulley rotating shaft (411) which can freely rotate and is arranged in the solid supporting column (407) and the two side plates (404) in a penetrating way.

5. The apparatus for controlling shield originating end cave-in attitude of claim 4, wherein said top plate (405) of the left support column (401) and said top plate (405) of the right support column (402) are both disposed obliquely and are shaped like an inverted figure-eight as a whole.

6. The device for adjusting and controlling the tunnel entering posture at the shield initiating end according to claim 5, wherein trapezoidal stress columns (409) which are symmetrical to each other are arranged on the upper surfaces of the top plate (405) on the left supporting column (401) and the top plate (405) on the right supporting column (402), and the top of each trapezoidal stress column (409) is fixedly connected with a rubber buffer strip (410) with an arc-shaped top surface.

7. The apparatus for controlling and adjusting the attitude of a shield initiating end into a hole of claim 1, further comprising: a transverse support reinforcement assembly (7);

the transverse support reinforcing component (7) comprises transverse support reinforcing plates (701) with two ends respectively fixedly arranged on the two support groove plates (6), a gear set (702), brake friction plates (703) coaxially and fixedly connected with gears in the gear set (702), a left connecting rod (704), a right connecting rod (705), a shield body pressing plate (706) arranged right above the support reinforcing plates (701), a pressing plate returning component (707) connected between the shield body pressing plate (706) and the support reinforcing plates (701), and a brake block (708) connected to the bottom of the shield body pressing plate and matched with the brake friction plates (703) to brake the gears in the gear set (702);

the gear set (702) comprises a left connecting gear (7021) and a right connecting gear (7022) which are horizontally and transversely arranged on the supporting reinforcing plate (701) in a rotating mode; one end of a left connecting rod (704) is fixedly connected with the left supporting column (401), and the other end of the left connecting rod is in meshed connection with a left connecting gear (7021); one end of the right connecting rod (705) is fixedly connected with the right supporting column (402), and the other end of the right connecting rod is in meshed connection with the right contact gear (7022).

8. The apparatus for controlling and regulating the attitude of a shield originating end into a hole of claim 1, further comprising a longitudinal support reinforcing member (8);

the longitudinal support reinforcement assembly (8) comprises: the device comprises two upper pressing blocks (801) fixedly arranged on two sides of the bottom surface of an upper bottom plate (2) respectively, two lower ejecting blocks (802) fixedly arranged on two sides of the top surface of a lower bottom plate (1) respectively, a wedge block (803) arranged between the upper pressing block (801) and the lower ejecting block (802) on the same side, a pull rod (804) capable of transversely moving and penetrating through the wedge block (803), and fastening bolts (805) arranged at two ends of the pull rod (804); the upper pressing block (801) and the lower ejecting block (802) are vertically matched to form an isosceles trapezoid-shaped wedge block clamping groove (806), and the wedge block (803) can be freely and transversely inserted into the wedge block clamping groove (806).

9. The apparatus for controlling and adjusting the attitude of a shield originating end into a hole according to claim 1, wherein the jacking assembly (3) is a jack.

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