CN217151965U

CN217151965U - Supporting structure for tunnel secondary lining trolley

Info

Publication number: CN217151965U
Application number: CN202221086770.9U
Authority: CN
Inventors: 张晓东; 张莉; 周泽林
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-09
Anticipated expiration: 2032-05-07

Abstract

The utility model relates to the field of tunnel construction devices, in particular to a supporting structure for a tunnel secondary lining trolley, which comprises a supporting rod, a foot plate and at least one elastic supporting and limiting part, wherein the middle part of the lower end of the supporting rod is connected with the middle part of the upper end of the foot plate through a hinge structure, and a vertical space H is arranged between the lower end of the supporting rod and the upper end of the foot plate; the upper end of elastic support locating part is connected with the lower extreme limit portion of bracing piece, and the lower extreme of elastic support locating part is connected with the upper end limit portion of sole. The foot plate can deviate from the vertical direction to incline, and on the uneven road surface, the foot plate correspondingly inclines according to the road surface condition, so that the foot plate is attached to the road surface as much as possible, and the supporting stability and the supporting effect of the supporting structure are effectively improved. Simultaneously, through setting up the elastic support locating part, the elastic support locating part plays the auxiliary stay effect, and the inclined support of sole is more firm, further improves bearing structure's support stability.

Description

Supporting structure for tunnel secondary lining trolley

Technical Field

The utility model relates to a tunnel construction device field especially relates to a bearing structure for tunnel secondary lining platform truck.

Background

The tunnel secondary lining trolley is one of the most common devices for tunnel construction, and is mainly used for concrete lining construction of the inner wall of a tunnel. The construction process of the tunnel secondary lining trolley comprises the following steps: and constructing along the tunnel for a period of time, moving forwards for a distance, and constructing for a period of time again, thereby circulating.

In the construction process, the tunnel secondary lining trolley needs to be positioned every time when being stopped, and cannot be moved after being positioned. The current locate mode adopts the lead screw, bracing piece top such as hydraulic stem is tight in ground, thereby fix whole secondary lining platform truck, the lower extreme of bracing piece can set up the sole that is used for the increase and ground area of contact, because bracing piece and sole are fixed connection, be applicable to smooth ground, nevertheless when meetting the condition of road surface unevenness, the sole can not support on the road surface of unevenness firmly, vibration in the tunnel secondary lining platform truck work progress probably makes the sole support inefficacy and causes the displacement, support stability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a better bearing structure who is used for tunnel secondary lining platform truck of support stability.

The utility model provides a technical scheme that its technical problem adopted is: the supporting structure for the tunnel secondary lining trolley comprises a supporting rod, a foot plate and at least one elastic supporting limiting part, wherein the middle part of the lower end of the supporting rod is connected with the middle part of the upper end of the foot plate through a hinge structure, and a vertical distance H is formed between the lower end of the supporting rod and the upper end of the foot plate;

the upper end of elastic support locating part is connected with the lower extreme limit portion of bracing piece, and the lower extreme of elastic support locating part is connected with the upper end limit portion of sole.

Furthermore, the hinge structure comprises a first spherical groove arranged in the middle of the lower end of the supporting rod, a second spherical groove arranged in the middle of the upper end of the foot plate and a steel ball, the first spherical groove and the second spherical groove are arranged oppositely up and down, and the steel ball is arranged in the first spherical groove and the second spherical groove.

Furthermore, a plurality of first grooves are formed in the surface of the first spherical groove, and lubricating grease is filled in the first grooves.

Furthermore, a plurality of second grooves are formed in the surface of the second spherical groove, and lubricating grease is filled in the second grooves.

Further, the radius of the steel ball is R, and H is 1/2R.

The furtherly is, the elastic support locating part includes connecting rod and spring, and the upper end of connecting rod is connected with the lower extreme limit portion of bracing piece, and the lower extreme of connecting rod is connected with the upper end of spring, and the lower extreme of spring is connected with the upper end limit portion of sole.

Furthermore, the elastic support limiting part further comprises a sleeve, the spring is arranged in the sleeve in a matched mode, and the spring is connected with the upper end edge part of the foot plate through the sleeve.

Furthermore, the elastic support limiting part also comprises a first ball joint bearing, and the sleeve is connected with the upper end edge part of the foot plate through the first ball joint bearing;

the upper end edge of the foot plate is provided with a first mounting groove, and the first ball joint bearing is arranged in the first mounting groove.

Furthermore, the elastic support limiting part also comprises a second ball joint bearing, and the upper end of the connecting rod is connected with the lower end edge part of the supporting rod through the second ball joint bearing;

the lower end edge of the supporting rod is provided with a second mounting groove, and a second ball joint bearing is arranged in the second mounting groove.

Furthermore, the number of the elastic support limiting pieces is 4, and the 4 elastic support limiting pieces are uniformly distributed on the periphery of the lower end of the supporting rod.

The utility model has the advantages that: the utility model discloses a link together the lower extreme middle part of bracing piece and the upper end middle part of sole through hinge structure, the sole can skew vertical direction slope, and on the road surface of unevenness, the sole inclines correspondingly according to the road surface condition, makes the sole laminating road surface as far as possible to effectively improve bearing structure's support stability and supporting effect. Simultaneously, through setting up the elastic support locating part, the upper end of elastic support locating part is connected with the lower extreme limit portion of bracing piece, and the lower extreme of elastic support locating part is connected with the upper end limit portion of sole, and the elastic support locating part plays the auxiliary stay effect, and the inclined support of sole is more firm, further improves bearing structure's support stability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic bottom view of the support pole;

the label is: the support rod comprises a support rod 1, a first spherical groove 11, a first groove 12, a second mounting groove 13, a foot plate 2, a first mounting groove 21, an elastic support limiting part 3, a connecting rod 31, a spring 32, a sleeve 33, a first ball joint bearing 34, a second ball joint bearing 35, a hinge structure 4 and a steel ball 41.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the supporting structure for the tunnel secondary lining trolley of the present invention comprises a supporting rod 1, a foot plate 2 and at least one elastic supporting limiting part 3, wherein the middle part of the lower end of the supporting rod 1 is connected with the middle part of the upper end of the foot plate 2 through a hinge structure 4, and a vertical distance H exists between the lower end of the supporting rod 1 and the upper end of the foot plate 2; the upper end of elastic support locating part 3 is connected with the lower extreme limit portion of bracing piece 1, and the lower extreme of elastic support locating part 3 is connected with the upper end limit portion of sole 2.

The utility model discloses a when bearing structure uses on the road surface of leveling, sole 2 is vertical state, as shown in fig. 2, when using on the road surface of unevenness, sole 2 can skew vertical direction slope, as shown in fig. 1, and sole 2 slopes correspondingly according to the road surface condition, makes sole 2 laminate the road surface as far as possible to effectively improve bearing structure's support stability and supporting effect.

The effect of hinge structure 4 is that it can deviate vertical direction slope to make sole 2, the utility model discloses a preferred structure of hinge structure 4 is: as shown in fig. 1 and 2, the hinge structure 4 includes a first spherical recess disposed in the middle of the lower end of the support rod 1, a second spherical recess 21 disposed in the middle of the upper end of the foot plate 2, and a steel ball 41, the first spherical recess and the second spherical recess 21 are disposed in an up-down opposite manner, that is, the concave surfaces of the first spherical recess and the second spherical recess 21 are disposed in a corresponding up-down position, the steel ball 41 is disposed in the first spherical recess and the second spherical recess 21, and the steel ball 41 not only maintains the supporting relationship between the support rod 1 and the foot plate 2, but also enables the foot plate 2 to swing within a certain angle range.

In order to ensure the supporting safety of the foot plate 2, the swinging angle of the foot plate 2 cannot be too large, and a large number of experiments and practices prove that the radius of the steel ball 41 is R, and when H is 1/2R, the swinging angle range of the foot plate 2 is 10 degrees, so that the foot plate 2 can swing within a certain angle range, and the supporting safety of the foot plate 2 can be ensured.

In order to reduce the frictional resistance between the steel ball 41 and the support rod 1 and the foot plate 2 and facilitate the tilting and swinging of the foot plate 2, as shown in fig. 4, a plurality of first grooves are formed in the surface of the first spherical groove, the first grooves are filled with grease, the first grooves are arranged in a parallel manner, a plurality of second grooves 23 are formed in the surface of the second spherical groove 21, the second grooves 23 are filled with grease, the second grooves are also arranged in a parallel manner, and the grease is lubricating resin.

The effect of elastic support locating part 3 plays the auxiliary stay effect, makes the inclined support of sole 2 more firm, the utility model discloses an optimal structure of elastic support locating part 3 does: as shown in fig. 1 and 2, the elastic support limiting member 3 includes a connecting rod 31 and a spring 32, the upper end of the connecting rod 31 is connected to the lower end edge of the supporting rod 1, the lower end of the connecting rod 31 is connected to the upper end of the spring 32, and the lower end of the spring 32 is connected to the upper end edge of the foot plate 2. The elastic support limiting part 3 adapts to the swinging and inclining of the foot board 2 through the compression, the stretching and the inclining of the spring 32, thereby improving the inclining support stability of the foot board 2. The spring 32 is directly exposed outside, the damage probability of the spring 32 is high, in order to protect the spring 32, the elastic support limiting part 3 further comprises a sleeve 33, the spring 32 is arranged in the sleeve 33 in a matching mode, the spring 32 is connected with the upper end edge part of the foot plate 2 through the sleeve 33, namely the spring 32 is arranged in the sleeve 33 firstly, and the sleeve 33 is connected with the upper end edge part of the foot plate 2. In order to make the elastic supporting limiting part 3 more adapt to the swing and inclination of the foot plate 2, as shown in fig. 3, the elastic supporting limiting part 3 further comprises a first ball joint bearing 34 and a second ball joint bearing 35, the sleeve 33 is connected with the upper end edge part of the foot plate 2 through the first ball joint bearing 34, the upper end of the connecting rod 31 is connected with the lower end edge part of the supporting rod 1 through the second ball joint bearing 35, so that the upper end of the connecting rod 31 is hinged with the lower end edge part of the supporting rod 1, and the lower end of the sleeve 33 is hinged with the upper end edge part of the foot plate 2. In order to facilitate installation and maintenance of the first ball joint bearing 34 and the second ball joint bearing 35, a first installation groove 22 is formed in the upper end edge of the foot plate 2, and the first ball joint bearing 34 is arranged in the first installation groove 22; the lower end edge of the support rod 1 is provided with a second mounting groove 11, and a second ball joint bearing 35 is arranged in the second mounting groove 11.

The number of the elastic support stoppers 3 is preferably 4, and the 4 elastic support stoppers 3 are uniformly distributed on the circumference of the lower end of the support rod 1. The elastic support limiting parts 3 are opposite to each other in pairs and distributed around the steel ball 41, no matter which side the foot plate 2 inclines, part of the elastic support limiting parts 3 always provide elastic force, the rest of the elastic support limiting parts 3 provide tensile force, resultant force is used for tightly jacking the support rod 1, partial stress is shared by the steel ball 41, a better supporting effect is achieved, and the supporting stability of the supporting structure is further improved.

Claims

1. A bearing structure for tunnel secondary lining platform truck which characterized in that: the support device comprises a support rod (1), a foot plate (2) and at least one elastic support limiting part (3), wherein the middle part of the lower end of the support rod (1) is connected with the middle part of the upper end of the foot plate (2) through a hinge structure (4), and a vertical distance H is formed between the lower end of the support rod (1) and the upper end of the foot plate (2);

the upper end of elastic support locating part (3) is connected with the lower extreme limit portion of bracing piece (1), and the lower extreme of elastic support locating part (3) is connected with the upper end limit portion of sole (2).

2. The support structure for a tunnel secondary lining trolley according to claim 1, wherein: the hinge structure (4) comprises a first spherical groove arranged in the middle of the lower end of the support rod (1), a second spherical groove (21) arranged in the middle of the upper end of the foot plate (2) and a steel ball (41), the first spherical groove and the second spherical groove (21) are arranged up and down oppositely, and the steel ball (41) is arranged in the first spherical groove and the second spherical groove (21).

3. The support structure for a tunnel secondary lining trolley according to claim 2, wherein: a plurality of first grooves are formed in the surface of the first spherical groove, and lubricating grease is filled in the first grooves.

4. The support structure for a tunnel secondary lining trolley according to claim 2, wherein: a plurality of second grooves (23) are formed in the surface of the second spherical recess (21), and grease is filled in the second grooves (23).

5. The support structure for a tunnel secondary lining trolley according to claim 2, wherein: the radius of the steel ball (41) is R, and H is 1/2R.

6. The support structure for a tunnel secondary lining trolley according to any one of claims 1 to 5, wherein: elastic support locating part (3) are connected with the upper end limit portion of bracing piece (1) including connecting rod (31) and spring (32), the upper end of connecting rod (31), and the lower extreme of connecting rod (31) is connected with the upper end of spring (32), and the lower extreme of spring (32) is connected with the upper end limit portion of sole (2).

7. The support structure for a tunnel secondary lining trolley according to claim 6, wherein: the elastic support limiting piece (3) further comprises a sleeve (33), the spring (32) is arranged in the sleeve (33) in a matching mode, and the spring (32) is connected with the upper end edge portion of the foot plate (2) through the sleeve (33).

8. The support structure for a tunnel secondary lining trolley according to claim 7, wherein: the elastic support limiting part (3) further comprises a first ball joint bearing (34), and the sleeve (33) is connected with the upper end edge part of the foot plate (2) through the first ball joint bearing (34);

a first mounting groove (22) is formed in the edge portion of the upper end of the foot plate (2), and a first ball joint bearing (34) is arranged in the first mounting groove (22).

9. The support structure for a tunnel secondary lining trolley according to claim 6, wherein: the elastic support limiting part (3) further comprises a second ball joint bearing (35), and the upper end of the connecting rod (31) is connected with the lower end edge part of the supporting rod (1) through the second ball joint bearing (35);

the lower end edge of the support rod (1) is provided with a second mounting groove (11), and a second ball joint bearing (35) is arranged in the second mounting groove (11).

10. The support structure for a tunnel secondary lining trolley according to claim 1, wherein: the number of the elastic supporting limiting parts (3) is 4, and the 4 elastic supporting limiting parts (3) are uniformly distributed on the circumference of the lower end of the supporting rod (1).