CN216477341U - Embedded pocket anti-overturning single-oil-cylinder support shoe - Google Patents

Abstract

The utility model discloses an embedded pocket-sized anti-overturning single-oil-cylinder support shoe, belonging to the technical field of tunnel engineering; the problem that when single cylinders and double cylinders of oil cylinders are alternately arranged in the prior art, because the distance space between the single-cylinder supporting shoe and the double-cylinder supporting shoe is small, the single-cylinder supporting shoe and the adjacent double-cylinder supporting shoe are interfered, and the double-cylinder supporting shoe plate is pulled out by the single-cylinder supporting shoe plate is often solved; the technical scheme includes that the boot supporting plate comprises a boot supporting plate body, wherein the boot supporting plate body is fixedly mounted at the end part of a single oil cylinder, the top of the boot supporting plate body is recessed inwards to form a sinking platform, and an anti-overturning assembly in contact with the inner wall of a tail shield is arranged in the sinking platform; its aim at can realize when current pipe list, two hydro-cylinders prop the boots apart from too little, solves the deflection problem that the single hydro-cylinder propped the boots.

Description

Embedded pocket anti-overturning single-oil-cylinder support shoe

Technical Field

The utility model belongs to the technical field of tunnel engineering, and particularly relates to an embedded pocket-sized anti-overturning single-oil-cylinder support shoe.

Background

The shield machine propulsion system mainly provides a counterforce for driving the shield to advance for the shield, the counterforce is propped against the pipe sheet through the propulsion oil cylinder, the pipe sheet is static, the shield is propelled forward through the propulsion cylinder propping against the pipe sheet, and the direction of the shield driving is changed through adjusting the stroke of the regional oil cylinder.

In the shield construction process of tunnel engineering, due to the various graduations of the segments, the arrangement of the thrust oil cylinder is also various, and the arrangement comprises a single cylinder arrangement mode, a double-cylinder arrangement mode, a single-double-cylinder alternate arrangement mode and the like.

When the oil cylinders are alternately arranged, the tail ends of two piston rods of the double oil cylinders generally share one supporting shoe, so that the two piston rods are structurally limited in the extending process of the piston rods, and deflection action along the circumferential direction of the piston rods cannot occur, namely circumferential deflection action of the piston rods and the supporting shoes relative to the cylinder body of the oil cylinder cannot occur in the double propelling cylinders; however, the single-cylinder piston rod does not have a structure for limiting deflection in the circumferential direction, under the comprehensive action of various factors such as piston rod pressure, shoe supporting gravity, uneven friction force in the circumferential direction of the piston rod and the like, the piston rod gradually deflects in the circumferential direction, and then drives the shoe supporting plate connected with the piston rod to deflect.

Through retrieval, the existing Chinese patent with the patent number of CN202833401U discloses an anti-deflection hydraulic oil cylinder with a guiding function, which comprises a cylinder barrel, a piston rod, a piston, a front cylinder cover and a rear cylinder cover, wherein the piston rod is provided with a cavity, the cavity is positioned at one side of the rear cylinder cover and is provided with an opening, and guiding square steel with one end connected with the rear cylinder cover is arranged in the cavity. Through setting up direction square steel in the piston rod for the piston rod is when removing, by direction square steel guide removal, has prevented because the piston rod produces the phenomenon of deflecting when receiving radial effort, and it has following defect: the rigidity of the piston rod is inevitably reduced by hollowing the piston rod, so that the bearing capacity is reduced, and the piston rod is complex in structure and high in processing cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model aims to provide an embedded pocket-sized anti-overturning single-cylinder supporting shoe, which aims to solve the deflection problem of the single-cylinder supporting shoe when the distance between the existing single-cylinder supporting shoe and the existing double-cylinder supporting shoe is too small.

The technical scheme adopted by the utility model is as follows:

the utility model provides a pocket-size single cylinder that prevents upset of inserted props boots, includes props the boots board body, prop boots board body fixed mounting at single cylinder tip, prop the interior concave platform that sinks that forms in boots board body top, sink and be provided with in the platform with the anti-upset subassembly of tail shield inner wall contact.

By adopting the technical scheme, the sinking platform is formed by the inward concave part at the top of the shoe supporting plate body, the anti-overturning assembly is mounted in the sinking platform in an embedded mode, the space at the left side and the right side of the shoe supporting plate is not occupied, the anti-overturning assembly is suitable for the situation that the distance between the single oil cylinder and the double oil cylinders is too small, and the limit space between the shoe supporting plates is difficult to mount and locate in a conventional shoe supporting deflection preventing device.

Preferably, the number of the platform that sinks is two, and bilateral symmetry sets up and propping boots board body top, prevent upset subassembly and the quantity and the position one-to-one of platform that sink, prop the spacing roller train of boots by two elasticity that the symmetry set up and constitute.

By adopting the technical scheme, the two elastic shoe-supporting limiting roller sets are symmetrical on the shoe-supporting device, under the condition that the shield body is twisted due to the torsion moment borne by the cutter head, the two elastic shoe-supporting limiting roller sets always abut against the inner wall of the tail shield, and the bilateral symmetry structure can bring better structural stability for the anti-overturning assembly.

Preferably, elasticity props spacing roller train of boots including setting firmly the bottom plate on the platform that sinks, set firmly the base that highly has elastic buffer function on the bottom plate, the base top is provided with spacing roller, spacing roller is through the articulated seat fixed mounting at its both ends at the base top, and spacing roller highly is higher than props the boot plate body. By adopting the preferred technical scheme, under the condition that the shield body is twisted due to the torsional moment borne by the cutter head, the two limiting rollers on the elastic shoe supporting limiting roller set always abut against the inner wall of the tail shield under the action of upward pressure exerted by the base, so that when the shoe supporting plate body deflects circumferentially in the extending process of the single oil cylinder, the two limiting rollers symmetrically arranged from left to right abut against the inner wall of the tail shield, the limiting rollers can be compressed or extended under the action of the base, and the shoe supporting plate body is effectively limited to deflect circumferentially while moving axially; further, when the tunnel fluctuates up and down, the shield tunneling machine performs small-turning-radius tunneling, the piston rod deflects axially with the tail shield, the distance between the boot plate and the inner wall of the tail shield becomes small, and the limiting roller arranged at the top of the boot plate body retracts under pressure, so that the anti-overturning assembly automatically adapts to the position change of the inner wall of the tail shield, and the rigid collision or structural interference of the inner wall of the tail shield and the anti-overturning assembly is avoided.

Furthermore, the position of the limiting roller is higher than the shoe supporting plate and is fixed with the shoe supporting plate body. When the shield body twists reverse for keep certain distance throughout between the boot plate body top of propping and the tail shield inner wall, avoided the boot plate body of propping to scrape the tail shield inner wall, lead to the phenomenon that the shield body damaged, prolonged the life of equipment, practiced thrift the cost, improved the engineering progress at to a great extent.

As further preferred, spacing roller includes the gyro wheel, the gyro wheel both ends are installed on articulated seat through self-lubricating bearing, be provided with the bolt locating pin on the articulated seat, be provided with the hole on the bolt locating pin for annotate the butter, supplementary lubrication action.

Preferably, the base comprises two guide seats symmetrically arranged on the bottom plate and two guide sleeves sleeved on the guide seats, the guide seats and the guide sleeves are internally provided with elastic pieces, the upper ends of the elastic pieces are fixedly connected with the guide sleeves, and the lower ends of the elastic pieces are fixedly connected with the guide seats.

Preferably, the elastic member is a metal spring or a rubber spring.

Preferably, a sealing assembly is arranged at the contact part of the guide seat and the guide sleeve, and the sealing assembly comprises an O-shaped rubber ring and a waterproof nylon sleeve. Adopt this preferred technical scheme, adopt O type rubber circle and waterproof nylon cover can prevent that water and mud from getting into the inner structure of base.

Preferably, a limiting component for preventing the guide sleeve from horizontally rotating is arranged between the guide seat and the guide sleeve.

Preferably, the limiting part comprises a vertical through groove formed in the side wall of the guide seat and a limiting block protruding from the side wall of the guide sleeve, and the limiting block is located in the vertical through groove. By adopting the preferred technical scheme, the limiting block is matched with the vertical through groove to limit the rotation of the guide sleeve in the horizontal direction and position the compression stroke of the spring.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. the sinking platform is formed by recessing the top of the shoe supporting plate body, the anti-overturning assembly is mounted in the sinking platform in an embedded mode, the space of the left side and the right side of the shoe supporting plate is not occupied, the anti-overturning assembly is suitable for the situation that the distance between the single oil cylinder and the double oil cylinder support shoes is too small, and the limit space between the support shoes is difficult to mount and locate in a conventional shoe supporting deflection preventing device.

2. Under the torsional moment that the shield body receives because the blade disc takes place torsional circumstances, and two spacing rollers on the spacing roller train of elasticity boots are exerted under the effect of ascending pressure at the base, support all the time on the tail shield inner wall, when making the boots board body stretch out the in-process and take place the circumference deflection at single cylinder, two spacing rollers and the butt of tail shield inner wall through bilateral symmetry setting, spacing roller can compress or stretch out under the effect of base, effective restriction boots board body also takes place the circumference deflection when axial displacement.

3. When the tunnel has fluctuation from top to bottom, when the shield constructs the machine and carries out the tunnelling of little turning radius, piston rod and tail shield take place the axial deflection, prop the interval of boots board and tail shield inner wall and diminish, install in this moment prop the spacing roller pressurized at boots board body top and retract, and then make the automatic adaptation of subassembly of preventing overturning the position change of tail shield inner wall avoids taking place the tail shield inner wall with the rigid collision or the structure of subassembly of preventing overturning interfere.

4. The position of the limiting roller is higher than the shoe supporting plate and is fixed with the shoe supporting plate body. When the shield body twists reverse for keep certain distance throughout between the boot plate body top of propping and the tail shield inner wall, avoided the boot plate body of propping to scrape the tail shield inner wall, lead to the phenomenon that the shield body damaged, prolonged the life of equipment, practiced thrift the cost, improved the engineering progress at to a great extent.

5. The contact position of guide holder and uide bushing is provided with seal assembly, seal assembly includes O type rubber circle and waterproof nylon cover, adopts O type rubber circle and waterproof nylon cover can prevent water and mud to get into the inner structure of base.

6. The limiting part comprises a vertical through groove formed in the side wall of the guide seat and a limiting block protruding from the side wall of the guide sleeve, the limiting block is located in the vertical through groove and is used for limiting rotation of the guide sleeve in the horizontal direction and positioning the compressed stroke of the spring through matching of the limiting block and the vertical through groove.

Drawings

The utility model will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a view of the installation structure of a single thrust cylinder piston rod in the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic view of a piston rod deflection state in the prior art;

FIG. 4 is a perspective view of the embedded pocket anti-rollover single cylinder shoe of the present invention;

FIG. 5 is a perspective view of the anti-roll over assembly of the present invention;

FIG. 6 is a front view of the anti-roll over assembly;

fig. 7 is a side view of the anti-roll over assembly.

Reference numerals

A boot supporting plate body-1; a single oil cylinder-2; a sinking platform-3; an anti-overturning component-4; an elastic shoe-supporting limiting roller set-5; a bottom plate-6; a base-7; a limiting roller-8; a guide seat-9; a guide sleeve-10; an elastic member-11; a seal assembly-12; a vertical through slot-13; a stopper-14; anterior-medial shield-15; tail shield-16; inner wall-17 of tail shield; and (4) a pipe piece-18.

Detailed Description

For the purposes of the embodiments of the present application; the technical scheme and the advantages are clearer, and the technical scheme in the embodiment of the application is clearer in combination with the attached drawings in the embodiment of the application; the embodiments described are to be considered in all respects only as illustrative and not restrictive. The components of embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the term "up"; "Down"; "left"; "Right"; "vertical"; "horizontal"; "in"; the directions or positional relations indicated by "outside" and the like are based on the directions or positional relations shown in the drawings, or the directions or positional relations which are usually placed when the utility model is used, and are only for convenience of describing the application and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific direction; constructed and operative in a particular orientation and therefore should not be construed as limiting the application. Further, the term "first"; "second"; "third" and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail with reference to fig. 1 to 7.

The utility model provides a pocket-size single cylinder that prevents upset of inserted props boots, includes and props boot board body 1, prop 1 fixed mounting of boot board body at 2 tip of single cylinder, prop 1 back of the body of boot board and be provided with the pin for with 2 ball cup spring mounting location of single cylinder, prop the square platform 3 that sinks that the 1 top of boot board body indent formed two symmetries and set up, it prevents upset subassembly 4 with the contact of tail shield inner wall 17 to be provided with in the platform 3 to sink.

In this embodiment, the quantity of platform 3 that sinks is two, and bilateral symmetry sets up and is propping 1 tops of boots board body, prevent upset subassembly 4 and the quantity and the position one-to-one of platform 3 that sinks, prop the spacing roller train 5 of boots by two elasticity that the symmetry set up and constitute, under the shield body takes place torsional condition because the moment of torsion that the blade disc receives, two elasticity prop the spacing roller train 5 of boots and support all the time on tail shield inner wall 17, and the structure that bilateral symmetry set up can bring more excellent structural stability for preventing upset subassembly 4.

In this embodiment, the elastic shoe supporting limiting roller set 5 comprises a bottom plate 6 fixedly arranged on the sinking platform 3, a base 7 with a height having an elastic buffering function is fixedly arranged on the bottom plate 6, a limiting roller 8 is arranged at the top of the base 7, the limiting roller is fixedly arranged at the top of the base 7 through hinged seats at two ends of the limiting roller, and the two limiting rollers 8 always abut against the inner wall 17 of the tail shield under the action of upward pressure applied by the base 7, so that the shoe supporting plate body 1 is effectively limited from circumferential deflection while moving axially; the height of the limiting roller is higher than that of the shoe supporting plate body 1, and the limiting roller and the shoe supporting plate body 1 are fixed in position. When the shield body twists reverse for keep certain distance throughout between 1 top of the board body of propping boots and the tail shield inner wall 17, avoided propping the board body of boots 1 and scraped the tail shield inner wall 17, lead to the phenomenon that the shield body damaged, prolonged the life of equipment, practiced thrift the cost, improved the engineering progress at to a great extent.

As a preferred embodiment, spacing roller 8 includes the gyro wheel, the gyro wheel both ends are installed on articulated seat through self-lubricating bearing, be provided with the bolt locating pin on the articulated seat, be provided with the hole on the bolt locating pin for annotate butter, supplementary lubrication action.

As a preferred embodiment, the base 7 includes two guide seats 9 symmetrically disposed on the bottom plate 6, and two guide sleeves 10 sleeved on the guide seats 9, a cylindrical cavity is formed inside the guide seats 9 and the guide sleeves 10, an elastic member 11 is installed in the cylindrical cavity, the elastic member 11 is a metal spring or a rubber spring, an upper end of the elastic member 11 is fixedly connected with the guide sleeves 10, and a lower end of the elastic member is fixedly connected with the guide seats 9, and is used for providing an upward pressure to the guide sleeves 10, so that the limiting roller is tightly attached to the inner wall 17 of the tail shield.

As a preferred embodiment, a sealing assembly 12 is disposed at a contact portion of the guide seat 9 and the guide sleeve 10, the sealing assembly 12 includes an O-shaped rubber ring and a waterproof nylon sleeve, and water and sludge can be prevented from entering the internal structure of the base 7 by the O-shaped rubber ring and the waterproof nylon sleeve.

As a preferred embodiment, a limiting component for preventing the guide sleeve 10 from rotating horizontally is arranged between the guide seat 9 and the guide sleeve 10, the limiting component includes a vertical through groove 13 formed in the side wall of the guide seat 9 and a limiting block 14 protruding from the side wall of the guide sleeve 10, the limiting block 14 is located in the vertical through groove 13, and is used for limiting the rotation of the guide sleeve 10 in the horizontal direction and positioning the stroke of the spring compression through the cooperation of the limiting block 14 and the vertical through groove 13.

Before shield tunneling, firstly, the supporting shoe of the single oil cylinder 2 is ensured to be righted and contacted with the segment 18, so that the thrust of the propulsion oil cylinder can be completely acted on the segment 18; and does not compress the segment 18 seal.

In shield tunneling, the supporting shoes of the single oil cylinders 2 are directly supported on the end faces of the pipe pieces 18, the limiting rollers 8 of the anti-overturning assemblies 4 on the upper sides of the supporting shoes of the single oil cylinders 2 are abutted to the inner wall 17 of the tail shield under the elastic force action of the compression springs, the single oil cylinders 2 are prevented from circumferentially deflecting in extension, and the supporting shoes of the single oil cylinders 2 cannot be in contact with the tail shield 16 which is pushed forwards, so that friction cannot be generated on the tail shield 16. After one-ring tunneling is completed, the propulsion oil cylinder retracts to facilitate splicing operation of the segments 18, and when the propulsion oil cylinder retracts, the supporting shoes 5 of the single oil cylinders 2 are righted under the action of the anti-overturning assembly 4.

When the shield machine performs tunneling with a small turning radius, the front middle shield 15 and the tail shield 16 deflect, the piston rod and the tail shield 16 correspondingly deflect to a certain extent, so that the distance between the supporting shoe and the inner wall 17 of the tail shield becomes smaller, and at the moment, the roller of the anti-overturning component 4 mounted on the supporting shoe plate body 1 retracts under pressure, so that the elastic supporting shoe limiting roller set 5 automatically adapts to the position change of the inner wall 17 of the tail shield, and the rigid collision or structural interference between the inner wall 17 of the tail shield and the anti-overturning component 4 is avoided.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides a pocket-size single cylinder that prevents upset of inserted props boots, includes props boot board body (1), prop boot board body (1) fixed mounting at single cylinder (2) tip, its characterized in that, prop the interior sunken platform (3) that form in boot board body (1) top, be provided with in the platform (3) of sinking with tail shield inner wall (17) contact prevent upset subassembly (4), the quantity of platform (3) of sinking is two, and bilateral symmetry sets up and prop boot board body (1) top, prevent that upset subassembly (4) prop the spacing roller train of boots (5) by two elasticity that the symmetry set up and constitute.

2. An embedded pocket-sized anti-overturning single oil cylinder supporting shoe as claimed in claim 1, wherein the elastic supporting shoe limiting roller set (5) comprises a bottom plate (6) fixedly arranged on the sinking platform (3), a base (7) with elastic buffering function is fixedly arranged on the bottom plate (6), and a limiting roller (8) is arranged on the top of the base (7).

3. The embedded pocket-sized anti-overturning single oil cylinder supporting shoe as claimed in claim 2, wherein the limiting roller (8) comprises a roller, two ends of the roller are mounted on a hinged seat through self-lubricating bearings, a bolt positioning pin is arranged on the hinged seat, and a hole for filling grease is arranged on the bolt positioning pin.

4. An embedded pocket-sized anti-overturning single cylinder supporting shoe as claimed in claim 3, characterized in that the base (7) comprises two guide bases (9) symmetrically arranged on the bottom plate (6) and two guide sleeves (10) sleeved on the guide bases (9), and elastic members (11) are arranged inside the guide bases (9) and the guide sleeves (10).

5. The embedded pocket-sized anti-overturning single cylinder supporting shoe as claimed in claim 4, characterized in that a sealing component (12) is arranged at the contact part of the guide seat (9) and the guide sleeve (10), and the sealing component (12) comprises an O-shaped rubber ring and a waterproof nylon sleeve.

6. An embedded pocket-sized anti-overturning single cylinder supporting shoe as claimed in claim 5, characterized in that a limiting component for preventing the guide sleeve (10) from rotating horizontally is arranged between the guide base (9) and the guide sleeve (10).

7. An embedded pocket-sized anti-overturning single cylinder supporting shoe as claimed in claim 6, characterized in that the limiting component comprises a vertical through groove (13) formed on the side wall of the guide base (9) and a limiting block (14) protruding from the side wall of the guide sleeve (10), and the limiting block (14) is positioned in the vertical through groove (13).

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