CN2329938Y - Automatic weight leading thread type horizontal displacement meter - Google Patents

Abstract

The utility model relates to an automatic weight leading thread type horizontal displacement meter, comprising a leading thread steel wire, a steel wire protection tube, a measuring point fixed disk, a steel wire telescopic disk, a steel wire pointer, a measuring rule, a guide wheel, a fixed weight, a jockey weight and a weight disc. The utility model is characterized in that the jockey weight is arranged on the weight disc which is positioned at the end terminal of the leading thread steel wire, and an electric automatic weight device which is composed of a support ring, a screw rod, a worm gear and a motor is arranged below the jockey weight. Weights can be hung and removed completely by the pressure automatic weight device, so that the defects existing in manual operation can be avoided, so that the key problem of implementing automatic monitoring by leading thread type horizontal displacement meters can be solved.

Description

Automatically counterweight draws bracing cable formula horizontal displacement meter

The utility model relates to a kind of earth and rockfill dam inner horizontal deformation monitoring instrument, particularly a kind of bracing cable formula horizontal displacement meter that draws.

At present, draw bracing cable formula horizontal displacement meter and often be used to remote monitoring earth and rockfill dam inner horizontal distortion.The composition and the test philosophy accompanying drawings of drawing bracing cable formula horizontal displacement meter are as follows.Fig. 1 draws the synoptic diagram that bracing cable formula horizontal displacement meter is provided with in earth and rockfill dam.Fig. 2 is displacement meter test philosophy figure.As shown in Figure 1, horizontal distortion monitoring point 11 is chosen in crucial section, different elevations position in dam body 1, is provided with to draw bracing cable formula horizontal displacement meter 2, and its observation part is positioned at domatic observation room, downstream 3.As shown in Figure 2; the composition that draws bracing cable formula horizontal displacement meter comprises and draws bracing cable steel wire 21; steel wire protection pipe 23; measuring point shaft collar 20; the flexible dish 22 of steel wire; steel wire pointer 24; survey chi 25; angle sheave 26; fixedly counterweight 27; jockey weight 28; scale pan 29; from each measuring point shaft collar 20 extension line expansion coefficient very little draw bracing cable steel wire 21; through each flexible dish guide hole 221; measuring platform angle sheave 26 in observation room (among Fig. 1 shown in 3); hang counterweight 27 in steel wire 21 terminals; 28; by the pointer on the steel wire 21 24 with respect to the horizontal shift of surveying chi 25, get final product the relative horizontal shift value of measuring point.By the on-the-spot test regulation, hang counterweight and just can begin to survey after 30 minutes to read, surveyed every 15 minutes then and read once, until obtaining identical reading value twice, be only relative horizontal displacement observation value.Produce fatigue for avoiding steel wire to bear bigger pulling force for a long time, each survey run through finish after, part counterweight (being jockey weight) must be taken off reserve part counterweight (promptly fixedly counterweight).1 signal earth and rockfill dam dam body among Fig. 2.

Because it is more to draw bracing cable steel wire quantity, it is longer to draw journey, and the counterweight quality is bigger, is about the 120-150 kilogram, manually hangs to the field observation room, gets counterweight, and the working time is long, and labour intensity is big, and the counterweight that also easily difference is drawn the bracing cable steel wire is hung wrong, influences survey read data precision.Therefore, realizing hanging, get counterweight automatically, is to draw the key point that bracing cable formula horizontal displacement meter is realized far distance automatic monitoring.

The purpose of this utility model is, overcomes the artificial on-the-spot shortcoming of hanging, getting counterweight, provide a kind of have an automatic counterweight device draw bracing cable formula horizontal displacement meter.

The purpose of this utility model is achieved through the following technical solutions: a kind of automatic counterweight draws bracing cable formula horizontal displacement meter; its composition comprises and draws the bracing cable steel wire; the steel wire protection pipe; the measuring point shaft collar; the flexible dish of steel wire; the steel wire pointer; survey chi; angle sheave; fixing counterweight; jockey weight; scale pan; it is characterized in that jockey weight is positioned on the scale pan that draws bracing cable steel wire terminal; the jockey weight below has by backing ring; screw rod; worm gear pair; the automatic counterweight device of electrodynamic type that motor is formed; backing ring is fixed on the screw rod upper end; screw rod is connected with the worm gear pair spiral, and worm gear pair is connected with motor.

With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.

Fig. 3 is an automatic counterweight apparatus structure synoptic diagram of the present utility model.

Fig. 4 is the utility model and different operating status architecture synoptic diagram shown in Figure 3.

As shown in Figure 3 and Figure 4; automatically the counterweight composition that draws bracing cable formula horizontal displacement meter comprises and draws bracing cable steel wire 21; steel wire protection pipe (referring among Fig. 2 23); measuring point shaft collar (referring among Fig. 2 20); the flexible dish of steel wire (referring among Fig. 2 22); steel wire pointer 24; survey chi 25; angle sheave 26; fixedly counterweight 27; jockey weight 28; scale pan 29; jockey weight 28 is positioned on the scale pan 29 that draws bracing cable steel wire 21 terminals; jockey weight 28 belows have by backing ring 40; screw rod 41; worm gear pair 42; the automatic counterweight device of electrodynamic type that motor 43 is formed; backing ring 40 is fixed on screw rod 41 upper ends; screw rod 41 is connected with worm gear pair 42 spirals, and worm gear pair 42 is connected with motor 43.

It is as follows that the counterweight process is hung, got to the utility model automatically: during observation, as shown in Figure 3, the observation personnel reverse by system controlled by computer motor 43 in observation centre chamber, worm gear pair 42 drives screw rod 41 and moves down, backing ring 40 is moved down thereupon, and disengage with jockey weight 28, so jockey weight 28 drops on the scale pan 29, finished the work of hanging counterweight.The pulling force that this moment, steel wire 21 bore is increased to T1.After all survey runs through and finishes, just change by the system controlled by computer motor again, as shown in Figure 4, worm gear pair 42 drives screw rod 41 and moves up, backing ring 40 is risen to jockey weight 28 thereupon to be contacted, and and then jockey weight 28 held up, jockey weight 28 disengages with scale pan 29, has finished the work of taking off counterweight.The pulling force that this moment, steel wire 21 bore is decreased to T2.

The utility model is hung, is got the work of counterweight and finished by the automatic counterweight device of electrodynamic type fully, can carry out a plurality of counterweights that draw bracing cable simultaneously adds and subtracts automatically, the observation personnel do not need to operate counterweight in the field observation room, the drawback of having avoided human factor to bring has solved and has drawn the key issue that bracing cable formula horizontal displacement meter is implemented automatic monitoring.

As shown in Figure 3 and Figure 4, be equipped with among the embodiment and survey chi sensor 251, be convenient to realize that microcomputer is surveyed by monitoring requirement timing automatic reads to draw the relative horizontal shift value of bracing cable, the far distance automatic monitoring of can round Realization drawing bracing cable formula horizontal displacement meter.

Claims (2)

1, counterweight draws bracing cable formula horizontal displacement meter automatically; its composition comprises and draws the flexible dish of bracing cable steel wire, steel wire protection pipe, measuring point shaft collar, steel wire, steel wire pointer, survey chi, angle sheave, fixedly counterweight, jockey weight, scale pan; it is characterized in that jockey weight is positioned on the scale pan that draws bracing cable steel wire terminal; the jockey weight below has the automatic counterweight device of the electrodynamic type of being made up of backing ring, screw rod, worm gear pair, motor; backing ring is fixed on the screw rod upper end; screw rod is connected with the worm gear pair spiral, and worm gear pair is connected with motor.

2, automatic counterweight according to claim 1 draws bracing cable formula horizontal displacement meter, it is characterized in that having survey chi sensor.

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