CN2916132Y

CN2916132Y - Plug-in type bolt self-locking case

Info

Publication number: CN2916132Y
Application number: CN 200620043784
Authority: CN
Inventors: 潘国庆; 徐长彪
Original assignee: Shanghai Urban Construction Design Research Institute Co ltd
Current assignee: Shanghai Urban Construction Design Research Institute Co ltd
Priority date: 2006-07-10
Filing date: 2006-07-10
Publication date: 2007-06-27
Anticipated expiration: 2016-07-10

Abstract

The utility model discloses a portable auto-lock box, which comprises a hollow cone slide box. Wherein, the slide box has a small open end connected with a locating bushing and a big open end fixed with a slide box cover; the cone inner wall of the slide box is positioned with two or more gib blocks which are connected with a slide block respectively; elastic components are arranged in between the end of the slide block and the inner wall of the slide box cover. The utility model, adopting the hollow cone box in which at least two slide blocks which can slide to fulfill the integration and combination positioned inside, which making the bolt be inserted into easily, has the advantages of rapid consolidation and low cost; in addition, it also reduces the position of handholes by half, and thus greatly improves the strengthened condition of the pipe section.

Description

Instant-plugging bolt self-locking case

Technical field

The utility model relates to a kind of engineering connector, relates in particular to a kind of instant-plugging bolt self-locking case.

Technical background

Shield tunnel is normal to adopt prefabricated concrete pipe sheet assembled, needs to adopt high-strength bolt to be connected between section of jurisdiction and the section of jurisdiction.In order to penetrate bolt in the section of jurisdiction appointed positions, allow the section of jurisdiction reach effective connection simultaneously, need end rib and hand hole be set in section of jurisdiction inner arc side, the larger area hand hole can weaken the section of section of jurisdiction, be unfavorable for resisting the external load effect, tunnel after finishing influences tunnel ventilation because of the existence of more hand hole again, therefore needs grip hole to return and builds filling, increased engineering quantity.

Along with the continuous development of underground construction, the quick connection of section of jurisdiction enforcement that requires shield tunnel (highway, subway) is the constantly needs of development of underground construction, and quick connection of section of jurisdiction enforcement and quick-assembling are the necessary conditions that reaches the tunnel rapid construction.The research of Japan aspect snap joint is one of the most active country, and more representational at present snap joint form has:

AS (Axial Slide) joint [hoop]

(Anchor) type joint [hoop]

(" H ") wedge shape inserted block joint [hoop]

Withdrawing pin axle type joint [vertically]

Above snap joint form is each has something to recommend him respectively shortcoming again, and the splicing accuracy that has the section of jurisdiction that has requires too high problem, have exist structure complexity cause expensive problem.

The utility model content

Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides a kind ofly becomes fast the assembly unit of section of jurisdiction, convenient, hand hole quantity reduces by half, and improves the stress condition of section of jurisdiction section, reduces the instant-plugging bolt self-locking case of the construction costs of connector simultaneously.

For achieving the above object, the utility model provides a kind of instant-plugging bolt self-locking case, comprises the sliding case of a hollow cone, and described sliding case has an opening small end and the big end of an opening, the big end of described opening is set with a sliding case lid, and described opening small end is fixedly connected with a location sleeve pipe; The conical wall of described sliding case is provided with two or more gib blocks, slidely connects slide block on the described gib block respectively, is provided with an elastic component between described slide block tail end and described sliding cover wall.

Preferably, described slide block is three, and described gib block is three.

Preferably, described slide block has dovetail groove, and the corresponding surface of described gib block has the jut that cooperates with described dovetail groove.

Preferably, described gib block is a dovetail groove, and the corresponding surface of described slide block has the jut that cooperates with described dovetail groove.

Preferably, described locating sleeve front end detachably is provided with a seal cover.

Preferably, described elastic component is spring or elastic steel sheet.

Preferably, the material of described sliding case, described gib block, described locating sleeve and described sliding case lid is high-strength engineering plastics.

Instant-plugging bolt self-locking case of the present utility model is owing to selected the box-shaped of hollow cone, and in casing, be provided with more than two slidably with realize closing, and slide block, make bolt easily be inserted into engaging, make the utility model obtain the effect that assembly unit is quick, cost is low.

The utility model also owing to only need to reserve a bolt-inserting hole on the section of jurisdiction, has compared with prior art reduced the hand hole of half quantity, makes the stress condition of section of jurisdiction section obtain bigger improvement.

Description of drawings

Be described further below with reference to the technique effect of accompanying drawing, to understand the purpose of this utility model, feature and effect fully design of the present utility model, concrete structure and generation.Wherein:

Fig. 1 is the sectional view that bolt does not insert state in the utility model one preferred embodiment;

Fig. 2 is the vertical view of sliding case among Fig. 1;

Fig. 3 is the vertical view of slide block among Fig. 1;

Fig. 4 is the sectional view that bolt embodiment illustrated in fig. 1 inserts state;

Fig. 5 is the sectional view after the bolt insertion is finished among Fig. 4.

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, instant-plugging bolt self-locking case of the present utility model comprises the sliding case 1 of a cone, the cavity that sliding case 1 has hollow, and sliding case 1 is that cone has an opening small end 12 and the big end 13 of an opening because of profile.The big end 13 of the opening sliding case lid 2 that has been threaded, opening small end 12 be threaded one the location sleeve pipe 14, locating sleeve 14 is a separate type with the tube wall of sliding case 1, can be by being threaded, the length of locating sleeve 14 can be adjusted according to the pre-buried stress condition during to steel concrete of self-locking case.The conical inboard wall of sliding case 1 is provided with gib block 15, and gib block 15 is the dove-tail jut on sliding case 1 inwall.In the present embodiment, the quantity of gib block 15 is three, is the axle center and is symmetrically distributed, and slidely connects slide block 3 respectively on each gib block 15, has the dovetail groove 31 that matches with gib block 15 on the slide block 3.Slide block 3 can slide between the opening small end 12 of sliding case 1 and the big end 13 of opening along gib block 15.Between slide block 3 tail ends and sliding case lid 2 inwalls, also be provided with a spring 4.

It is that when each slide block 3 was positioned at opening small end 12, the distance between each slide block 3 should be less than the maximum outside diameter of bolt head 51 that the size of three slide blocks 3 cooperates; When each slide block 3 was positioned at the big end 13 of opening, the distance between each slide block 3 should be greater than the maximum outside diameter of bolt head 51.

In conjunction with Fig. 1, Fig. 4 and shown in Figure 5, use of the present utility model is described.Bolt 5 enters the opening small end 12 of sliding case 1 from the opening that is embedded in the locating sleeve 14 in the steel concrete, after meeting slide block 3 slide block 3 is pushed away toward the big end 13 of opening of sliding case 1, slide block 3 slides along gib block 15, because sliding case 1 is taper, each slide block 3 deviates from moving gradually, makes the spacing of each slide block 3 become big.When the spacing of each slide block 3 during greater than the external diameter of the bolt head 51 of bolt 5, bolt 51 is able to enter by the gap of slide block 3 cavity of sliding case 1.When bolt head 51 enters and during near the big end 13 of the opening of sliding case 1, because the spring 4 of slide block 3 rear ends is extruded, slide block 3 is replied slip under the promotion of the return action power of spring 4, come back to opening small end 12 places of sliding case 1, and bolt 5 owing to being blocked in sliding case 1 inner chamber by slide block 3, bolt head 51 is locked in the sliding case 1.When bolt 5 was subjected to pulling force, lock was tight more more under powerful bolt tension force for the bolt 5 that is pinned by slide block 3, broken up to bolt 5, but the sliding lane 1 of self-locking case can not be drawn out steel concrete.

In the present embodiment, the material of sliding case 1, gib block 15, locating sleeve 14 and sliding case lid 2 all can be high-strength engineering plastics such as ABS, nylon, and slide block 3 adopts the steel castable.

The inwall of sliding case 1 is the sliding bed storehouse of slide block 3, is again the stuffing box packing between slide block 3 and the steel concrete, under powerful positive pressure, can prevent effectively that compressive stress is concentrated.

As a kind of improvement, removably be provided with a seal cover 16 at locating sleeve 14 front ends, the effect of seal cover 16 is when locating sleeve 14 integral built-ins are gone in the concrete, the opening of sealing locating sleeve 14 falls into locating sleeve 14 to prevent concrete.

As a kind of replacement, the gib block 15 on the sliding case 1 can be a dovetail groove, and correspondingly, the corresponding surface of slide block 3 is to have the jut (not doing diagram) that cooperates with dovetail groove, plays the effect of guiding equally.

The shape of gib block 15 is not limited to dove-tail, also can be rectangle or the profile that can play guide effect such as trapezoidal.

The quantity of slide block 3 also is not limited to three, can be more than two or three, preferably is three to four.

In other embodiments, spring 4 can be replaced by other common elastomeric elements such as elastic steel sheet, can play the effect that restoring force is provided for the answer slip of slide block 3 equally.

Instant-plugging bolt self-locking case of the present utility model has been owing to selected the box-shaped of hollow cone, and in casing, be provided with a plurality of slidably with realize closing, and slide block, when bolt inserts, can make the slide block forced-slip and separate; When the bolt top arrives bottom half, slide block can be replied under the elastomeric element effect and be slided and closure, the bolt top is stuck in box house, makes bolt can easily realize insertion, sealed process, thereby makes the utility model obtain assembly unit technique effect fast.

While the utility model is owing to simple in structure, thereby low cost of manufacture, thereby effectively reduces the cost of engineering.

The utility model also owing to only need compare with prior art in an end inserting bolt of sliding case, has reduced the quantity of hand hole on the section of jurisdiction, thereby has effectively improved the stress condition of section of jurisdiction.

In sum, be several preferred embodiment of the present utility model described in this manual.All technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in claim protection domain of the present utility model.

Claims

1, a kind of instant-plugging bolt self-locking case is characterized in that: comprise the sliding case of a hollow cone, described sliding case has an opening small end and the big end of an opening, and the big end of described opening is set with a sliding case lid, and described opening small end is fixedly connected with a location sleeve pipe; The conical wall of described sliding case is provided with two or more gib blocks, slidely connects slide block on the described gib block respectively, is provided with an elastic component between described slide block tail end and described sliding cover wall.

2, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: described slide block is three, described gib block is three.

3, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: described slide block has dovetail groove, and the corresponding surface of described gib block has the jut that cooperates with described dovetail groove.

4, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: described gib block is a dovetail groove, and the corresponding surface of described slide block has the jut that cooperates with described dovetail groove.

5, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: described locating sleeve front end detachably is provided with a seal cover.

6, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: described elastic component is spring or elastic steel sheet.

7, instant-plugging bolt self-locking case as claimed in claim 1, it is characterized in that: the material of described sliding case, described gib block, described locating sleeve and described sliding case lid is high-strength engineering plastics.