CN210562170U

CN210562170U - Outward-rotating type variable ground anchor for static sounding test

Info

Publication number: CN210562170U
Application number: CN201920962112.3U
Authority: CN
Inventors: 何开录
Original assignee: Xinjiang Railway Survey & Design Institute Co ltd
Current assignee: Xinjiang Railway Survey & Design Institute Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-05-19
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a but external rotation formula variable ground anchor for static sounding test, including the stock, the stock lower extreme is setting up little anchor plate and big anchor plate respectively by going up respectively, is setting up twice spout of mutual parallel arrangement in the big anchor plate top surface of stock both sides respectively, is setting up a right angle sector plate on the big anchor plate top surface of stock both sides respectively, and a rack is being consolidated respectively to the inboard edge of right angle sector plate, and fixed a slider that is setting up respectively under rack middle part and the rack free end department bottom surface, and the slider slides along the spout, and the stock is fitting a jacket external rotation formula sleeve, and the sleeve lower extreme passes through thrust bearing and installs on big anchor plate, and the sleeve lower extreme is setting up a gear, the gear with two racks mesh simultaneously. The utility model discloses convenient to use, low in cost has increased the maneuverability of device, has improved the test depth, makes the test result can accurately reflect the true bearing capacity in stratum, can reduce static sounding test's work load and intensity of labour by a wide margin.

Description

Outward-rotating type variable ground anchor for static sounding test

Technical Field

The utility model relates to an outward turning type variable ground anchor for static sounding test.

Background

According to geological survey regulations of railway engineering (TB 10012-2007), soft soil and soft soil are preferably distributed in a static sounding manner, and the test depth of a railway exploration task is 10m below the ground.

In order to penetrate into a target depth in a weak stratum, a large ground anchor is usually replaced to penetrate into the target depth, but in the stratum encountered by a railway, the surface layer is 0-0.4m, the ps value is greater than 3000kpa, 0.4-1m, the ps value is less than 600kpa, the large ground anchor cannot be screwed into the stratum, the small ground anchor can be screwed into the stratum but the effect of a counterforce device is poor, when the intervertebral resistance is greater than 8-12mpa, the counterforce device fails, and the exploration test depth is generally 3-7 m.

In the static sounding test, the traditional method for increasing the penetration depth is to increase the anchor disk of the earth anchor to increase the counter force of the earth anchor, the diameter of the commonly used anchor disk is generally 160mm, the diameter of the increased anchor disk is generally 220mm, the counter force device can be enhanced after the anchor disk is increased, however, when the surface layer is 0-0.4m, the ps value is greater than 3000kpa, the earth anchor is difficult to screw into the stratum when the anchor disk is increased, and the time and the labor are wasted.

Disclosure of Invention

An object of the utility model is to provide a variable earth anchor of outward turning formula for static sounding test can adapt to the stratum that the top layer is hard, the lower part is soft, makes the easy screw in of earth anchor and can increase lower part stratum counter-force, reduces static sounding test's work load and intensity of labour by a wide margin.

The utility model aims at realizing the outward-turning type variable ground anchor for the static sounding test, which comprises an anchor rod, wherein the lower end of the anchor rod is respectively provided with a small anchor disc and a large anchor disc from bottom to top, the top surfaces of the large anchor discs at the two sides of the anchor rod are respectively provided with two mutually parallel chutes, the top surfaces of the large anchor discs at the two sides of the anchor rod are respectively provided with a right-angle sector plate, the two right-angle sector plates are arranged symmetrically along the center of the anchor rod, the inner side edges of the right-angle sector plates above the chutes are respectively fixedly connected with a rack, the middle parts of the racks and the bottom surfaces at the free ends of the racks are respectively fixedly provided with a slide block, the slide block slides along the chutes, the anchor rod is externally fitted with an outward-turning sleeve, the lower end of the sleeve is arranged on the large anchor disc through a thrust bearing, the lower end of the sleeve is provided with a gear, when the sleeve rotates, the two sector plates are driven by the two racks to simultaneously extend out or retract.

This earth anchor is in above-mentioned stratum test in-process, use the little anchor plate of inner core screw in when can reaching the screw in, can make the effect of anchor piece diameter grow through anticlockwise rotation sleeve during the earth anchor atress, can make anchor piece diameter diminish through clockwise rotation sleeve when finishing, effectual destruction to the atress stratum when having reduced the earth anchor and having screwed in, the screw in resistance has been reduced, the device counter-force and the depth of penetration have been improved, the maneuverability that the anchor piece changed has been improved, make the test result more accurate, the compliance. The variable ground anchor is suitable for static sounding tests of cohesive soil, silt, saline soil and silt, and is suitable for soft soil with a surface layer of 0-0.4m, a ps value of more than 3000kpa and less than 0.4m, and a ps value of less than 600 kpa. The utility model discloses variable earth anchor, convenient to use, low in cost has increased the maneuverability of device, has improved the test depth, makes the test result can accurately reflect the true bearing capacity in stratum, can reduce static sounding test's work load and intensity of labour by a wide margin.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is the structural schematic diagram of the large anchor disk in the top view in the working state of the utility model.

Detailed Description

An outward-turning type variable ground anchor for a static sounding test comprises an anchor rod 1, wherein a small anchor disc 7 and a large anchor disc 6 are respectively arranged at the lower end of the anchor rod 1 from bottom to top, two parallel sliding grooves are respectively arranged in the top surfaces of the large anchor discs 6 at two sides of the anchor rod 1, a right-angle sector plate 5 is respectively arranged on the top surfaces of the large anchor discs at two sides of the anchor rod, the two right-angle sector plates 5 are arranged along the anchor rod 1 in a central symmetry manner, a rack 8 is respectively fixed at the inner side edge of the right-angle sector plate above the sliding grooves, a sliding block 4 is respectively fixed at the middle part of the rack 8 and under the bottom surface at the free end of the rack 8, the sliding block 4 slides along the sliding grooves, an outward-turning type sleeve 2 is sleeved outside the anchor rod 1, the lower end of the sleeve is arranged on the large anchor disc through a thrust bearing 9, a gear 3 is arranged at the lower end of the sleeve, the gear 3 is meshed with the two racks 8 at the same time, and when the sleeve 2 rotates, the two fan-shaped plates 5 are driven by the two racks 8 to extend out or retract simultaneously.

Claims

1. The utility model provides a but, rotatory formula variable ground anchor for static sounding test, includes the stock, and the stock lower extreme is setting up little anchor plate and big anchor plate, characterized by respectively by going up: the big anchor dish top surface of stock both sides is setting up the spout of twice mutual parallel arrangement in respectively, is setting up a right angle sector plate on the big anchor dish top surface of stock both sides respectively, and two right angle sector plates are central symmetrical arrangement along the stock, the inboard edge of right angle sector plate of spout top a rack is being fixed respectively, fixed a slider of setting up respectively under rack middle part and the rack free end department bottom surface, the slider slides along the spout, the stock cooperate the suit outward one revolve the formula sleeve, the sleeve lower extreme passes through thrust bearing and installs on big anchor dish, the sleeve lower extreme is setting up a gear, the gear with two racks mesh simultaneously, when the sleeve is rotatory, drive two sector plates outwards to stretch out simultaneously or retract through two racks.