CN203513056U

CN203513056U - Retractable staircase lower truss

Info

Publication number: CN203513056U
Application number: CN201320576794.7U
Authority: CN
Inventors: 章师君
Original assignee: Ningbo Hongda Elevator Co Ltd
Current assignee: Ningbo Hongda Elevator Co Ltd
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2014-04-02
Anticipated expiration: 2023-09-17

Abstract

The utility model discloses a retractable staircase lower truss which can be stretched and shortened. The retractable staircase lower truss has the advantage that when deviation exists between the horizontal length of a shaft and the horizontal length of a staircase, adjustment and installation can be conducted on site. A large number of expenses can be saved, and the construction period can not be delayed. The retractable staircase lower truss comprises two upper beams (1), wherein a lower beam (2) is arranged under each upper beam (1), a plurality of supporting rods (3) are connected between the upper beams (1) and the lower beams (2), each upper beam (1) and each lower beam (2) are respectively divided into a left section and a right section, a plurality of first bolt holes which are evenly distributed in the horizontal length direction of the staircase are formed between each left section and the corresponding right section, a connecting block (4) is arranged between each left section and the corresponding right section, a plurality of second bolt holes (5) which are evenly distributed in the horizontal length direction of the staircase are formed in each connecting block (4), and each connecting block (4) can be connected with the corresponding left section and the corresponding right section when bolts (6) are connected with the corresponding first bolt holes and the corresponding second bolt holes (5) and nuts are screwed under the condition that the corresponding first bolt holes are overlapped with the corresponding second bolt holes.

Description

A kind of scalable staircase bottom truss

Technical field

The utility model relates to staircase and girder technical field, is specifically a kind of scalable staircase bottom truss.

Background technology

The length of escalator is to produce according to the actual, measured dimension of hoistway, if in measurement process due to artificial carelessness, measurement size is partially long, escalator cannot be put into hoistway; Measurement size is partially short, escalator cannot be placed on the support beam of hoistway, terms of settlement is, the size of change hoistway or escalator is transported back to factory according to the truss length of civil engineering size change staircase alternative in the two, the result of doing like this can produce a large sum of expense, and can incur loss through delay the duration.

Utility model content

The technical problems to be solved in the utility model is, the scalable staircase bottom truss that a kind of staircase bottom truss is extending and shortening is adjusted is provided, there is when hoistway horizontal length and staircase horizontal length have deviation scene capable of regulating and install, can save a large sum of expense, can not incur loss through delay the duration.

The technical solution of the utility model is, the scalable staircase of the utility model bottom truss, it comprises two upper beams that are parallel to each other along the setting of staircase horizontal length direction, under two upper beams, be respectively provided with one with directly over the parallel underbeam of upper beam, upper beam and underbeam are equal in length, up and down over against upper beam and underbeam between be connected with many struts, each upper beam, underbeam is divided into two sections of left and right, left and right two sections be equipped with along a plurality of the first bolts hole of staircase horizontal length direction well-distributed, left and right two is intersegmental is equipped with a contiguous block, contiguous block is provided with a plurality of along staircase horizontal length direction well-distributed the second bolt hole, the first bolt hole with under the second bolt hole overlap condition, be connected a bolt and the nut of screwing on so that contiguous block is connected with two sections of left and right respectively.

Principle of work of the present utility model is, by the intersegmental spacing in left and right two, become large or diminish and utilize on contiguous block changes, underbeam is realized the elongation of bottom truss and shortens the intensity that simultaneously guarantees beam along the length of staircase horizontal length direction, launch, when needs extend bottom truss, contiguous block is unloaded, then increase each left and right two intersegmental spacing, the distance of each left and right two intersegmental increases equates, after putting in place, by the first bolt hole on two sections of the second bolt hole on contiguous block and left and right, overlapping and bolt has been connected the elongation of bottom truss, because spacing becomes large, can only be that a part of the second bolt hole and a part of the first bolt hole are overlapping, but not all overlapping, but can not affect contiguous block couples together two sections of left and right, when needs shorten bottom truss, contiguous block is unloaded, then reduce each left and right two intersegmental spacing, each left and right two intersegmental distances that reduce equate, after putting in place, by the first bolt hole on two sections of the second bolt hole on contiguous block and left and right, overlapping and bolt has been connected the shortening of bottom truss, due to pitch smaller, now will have more the second bolt hole and the first bolt hole overlapping, when the intersegmental spacing in left and right two is for hour, if the first bolt hole equates with the quantity of the second bolt hole, the second bolt hole will be all overlapping with the first bolt hole so.

Adopt after said structure, the utility model compared with prior art, have the following advantages: from present techniques scheme and principle of work, it is adjustable along the length dimension of staircase horizontal length direction that the utility model makes staircase bottom truss, it is extending and shortening adjustment, the advantage that makes to the utlity model has when hoistway horizontal length and staircase horizontal length have deviation scene capable of regulating and install, can save a large sum of expense, can not incur loss through delay the duration.

As improvement, two left sections of two upper beams equal in length, two left sections of two underbeams equal in length, the length of left section of two upper beams is less than the length of left section of two underbeams, that is to say, the waypoint that the waypoint that upper beam left and right is two sections and underbeam left and right are two sections staggers mutually, like this, the more reasonable stress at the waypoint place of upper underbeam, the power concentration problem that does not exist waypoint to overlap and cause, more safety and reliable.

As improvement, the first bolt hole equates with the quantity of the second bolt hole, and like this, number of bolt hole is reasonable, is unlikely to too much or very few, can meet the needs that two sections of left and right maximum spacing and minimum spacing regulate.

Accompanying drawing explanation

Fig. 1 is the front view of the scalable staircase of the utility model bottom truss.

Fig. 2 is the birds-eye view of the scalable staircase of the utility model bottom truss.

Shown in figure, 1, upper beam, 2, underbeam, 3, strut, 4, contiguous block, the 5, second bolt hole, 6, bolt, 7, left support abutment.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The scalable staircase of the utility model bottom truss, it comprises two upper beams 1 that are parallel to each other along the setting of staircase horizontal length direction, under two upper beams 1, be respectively provided with one with directly over the parallel underbeam 2 of upper beam 1, upper beam 1 and underbeam 2 are equal in length, up and down over against upper beam 1 and underbeam 2 between be connected with many struts 3, strut 3 is vertical direction setting, each upper beam 1, underbeam 2 is divided into two sections of left and right, left and right two sections be equipped with along a plurality of the first bolts hole of staircase horizontal length direction well-distributed, left and right two is intersegmental is equipped with a contiguous block 4, contiguous block 4 is provided with a plurality of along staircase horizontal length direction well-distributed the second bolt hole 5, the first bolt hole with under the second bolt hole 5 overlap conditions, be connected a bolt 6 and the nut of screwing on so that contiguous block 4 is connected with two sections of left and right respectively.

Two left sections of two upper beams 1 equal in length, two left sections of two underbeams 2 equal in length, the length of left section of two upper beams 1 is less than the length of left section of two underbeams 2.

In this example, the quantity of the first bolt hole is less than the quantity of the second bolt hole 5, and certain the first bolt hole can equate with the quantity of the second bolt hole 5; Because bottom truss is longer, and two sections of left and right are located at the truss left side, bottom, so cut apart with long and two-short dash line in figure, are the left-hand component of bottom truss shown in figure, have drawn the angle steel type left support abutment 7 for being connected with foundation of civil work in figure; Upper beam 1 and underbeam 2 are angle steel, contiguous block 4 is located at angle steel inner side, Fig. 1 is main depending on having carried out partly cuing open to show that along staircase horizontal length direction contiguous block 4 is located at the setting of angle steel inner side under state, Fig. 2 birds-eye view is also expressed this point in conjunction with semi-sictional view, like this, the upper plane of angle steel inner side and the upper plane of contiguous block 4 can be affixed or offset, and the plane of action of larger area power is provided, and are conducive to the support of two sections of 4 pairs of left and right of contiguous block; Right and left bit table described in the application is stated all based on orientation shown in figure; Succinct for diagram, in Fig. 2, omitted bolt 6.

Claims

1. a scalable staircase bottom truss, it comprises two upper beams (1) that are parallel to each other along the setting of staircase horizontal length direction, under two upper beams (1), be respectively provided with one with directly over the parallel underbeam (2) of upper beam (1), upper beam (1) and underbeam (2) are equal in length, up and down over against upper beam (1) and underbeam (2) between be connected with many struts (3), it is characterized in that, each upper beam (1), underbeam (2) is divided into two sections of left and right, left and right two sections be equipped with along a plurality of the first bolts hole of staircase horizontal length direction well-distributed, the left and right two intersegmental contiguous blocks (4) that are equipped with, contiguous block (4) is provided with a plurality of along staircase horizontal length direction well-distributed the second bolt hole (5), the first bolt hole with under the second bolt hole (5) overlap condition, be connected a bolt (6) and the nut of screwing on so that contiguous block (4) is connected with two sections of left and right respectively.

2. scalable staircase according to claim 1 bottom truss, it is characterized in that, two left sections of two upper beams (1) equal in length, two left sections of two underbeams (2) equal in length, the length of left section of two upper beams (1) is less than the length of left section of two underbeams (2).

3. scalable staircase according to claim 1 bottom truss, is characterized in that, the first bolt hole equates with the quantity of the second bolt hole (5).