CN214470754U

CN214470754U - Level gauge support

Info

Publication number: CN214470754U
Application number: CN202120322995.9U
Authority: CN
Inventors: 张敬宗
Original assignee: North China University of Technology
Current assignee: North China University of Technology
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-10-22
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a level gauge bracket, which comprises a ferrule which is vertically arranged, wherein the shape of the inner ring of the ferrule is matched with a leveling rod; three telescopic frame legs are arranged at the bottom of the ferrule, and locking devices are arranged on the frame legs. The utility model discloses can make the levelling rod keep vertical state steadily for a long time, improve measured data's accuracy.

Description

Level gauge support

Technical Field

The utility model belongs to the technical field of measuring equipment, concretely relates to surveyor's level support.

Background

The level is an instrument for establishing a horizontal sight line to measure the height difference between two points on the ground. In the use process of a common level gauge, a leveling rod needs to be placed on the ground for matched measurement. The leveling rod is a staff used in leveling measurement and is made of high-quality wood or glass fiber reinforced plastic, aluminum alloy and other materials. The length of the leveling rod is generally 3 meters, two leveling rods are a pair of the leveling rod and are straight rods with scales on two sides (black and red sides), and black and white or red and white alternate marks are printed every 1 cm.

Existing leveling rods are typically stood on the ground by the hands of the construction personnel who then read from the eyepieces of the level. But the leveling rod is used as a precise instrument and needs to be kept in a vertical state during use. The leveling rod is supported manually by constructors, so that the leveling rod is inclined, and the deviation of measured data is large.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a level bracket, concrete scheme is as follows:

the device comprises a vertically arranged ferrule, wherein the shape of the inner ring of the ferrule is matched with that of a leveling rod; the bottom of the ferrule is provided with three telescopic frame legs, and locking devices are arranged on the frame legs.

Furthermore, the frame leg comprises an upper leg rod hinged with the ferrule, a working cavity is arranged in the upper leg rod, one end of the working cavity is closed, the other end of the working cavity is an end cover arranged at the tail end of the upper leg rod, and an end cover hole is formed in the circle center of the end cover; a piston head capable of moving along the working cavity is arranged in the working cavity, a through hole is formed in the piston head, and a lower leg rod which penetrates out of the end cover and is coaxial with the upper leg rod is connected to the side face, corresponding to the end cover, of the piston head; and a sealing ring is arranged between the end cover hole and the lower leg rod, and silicone oil is filled in the working cavity.

Furthermore, a motor cavity is arranged on one side, positioned on the through hole, of the piston head, and a sealing cover is arranged outside the motor cavity; the locking device comprises a linear motor arranged in the motor cavity, the working direction of the linear motor is perpendicular to the central axis of the through hole, and the output end of the linear motor is provided with a blocking piece which can block the through hole.

Furthermore, a power supply and a single chip microcomputer which are connected with the linear motor are arranged in the motor cavity, and a switch which is electrically connected with the single chip microcomputer is arranged on the ferrule.

Further, the switch is a capacitive sensing touch switch.

The beneficial effects of the utility model reside in that: the utility model provides a surveyor's level support can make the levelling rod keep vertical state steadily for a long time, has improved measured data's accuracy.

Drawings

Fig. 1 is a schematic view of the working state (main view),

fig. 2 is a plan view of the present invention,

FIG. 3 is an enlarged view of the working chamber of the present invention,

fig. 4 is a structure enlarged view of the motor cavity of the present invention.

Figure number and name: 1. ferrule, 2, leveling rod, 3, frame leg, 31, upper leg rod, 32, working cavity, 33, end cover, 34, piston head, 35, through hole, 36, lower push rod, 37, motor cavity, 38, linear motor, 39, baffle, 4 and switch.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided only for explaining the present invention and are not intended to limit the scope of the present invention.

With reference to fig. 1 and 2, a levelling rod support comprises a vertically arranged ferrule 1, the inner ring of the ferrule 1 being shaped to mate with a levelling rod 2; three telescopic frame legs 3 are arranged at the bottom of the ferrule 1, and locking devices are arranged on the frame legs 3.

With reference to fig. 1-3, the leg 3 includes an upper leg rod 31 hinged to the ferrule 1, a working chamber 32 is provided in the upper leg rod 31, one end of the working chamber 32 is closed, the other end of the working chamber 32 is an end cap 33 provided at the end of the upper leg rod 31, and an end cap hole is provided at the center of the end cap 33; a piston head 34 which can move along the working cavity 32 is arranged in the working cavity 32, a through hole 35 is formed in the piston head 34, and a lower leg rod 36 which penetrates out of the end cover hole and is coaxial with the upper leg rod 31 is connected to the side face of the piston head 34 corresponding to the end cover 33; a sealing ring is arranged between the end cover hole and the lower leg rod 36, and the working cavity 32 is filled with silicon oil.

As shown in fig. 4, a motor cavity 37 is provided on one side of the piston head 34 located at the through hole 35, and a sealing cover (not shown in the drawing) is provided outside the motor cavity 37; the locking device comprises a linear motor 38 arranged in a motor cavity 37, the working direction of the linear motor 38 is perpendicular to the central axis of the through hole 35, and the output end of the linear motor 38 is provided with a baffle 39 which is enough to block the through hole 35.

In other embodiments of the present invention, a power supply and a single chip microcomputer connected to the linear motor 38 are further disposed in the motor cavity 37, and a switch 4 electrically connected to the single chip microcomputer is disposed on the ferrule 1, preferably, the switch 4 is a capacitive sensing touch switch.

The working process of the utility model is as follows:

when the leveling rod works normally, the through hole of the piston head is in a through state, the frame legs are similar to a damping telescopic rod structure, and an operator can manually adjust the lengths of the three frame legs to enable the leveling rod to be vertical;

after the adjustment is completed, the blocking piece is controlled by the linear motor to move outwards to block the through hole, at the moment, silicone oil on two sides of the piston head cannot flow, at the moment, the piston head cannot move along the working cavity, and at the moment, the length of the frame leg is in a locking state;

after the work is completed, the blocking pieces are controlled to move inwards through the linear motor, the through holes are exposed at the moment, silicone oil on two sides of the piston head circulates, the piston head can move along the working cavity at the moment, and the frame legs can be shortened to facilitate storage.

In concrete application, adopt capacitanc response touch switch, collocation singlechip control's control circuit can realize whether locking of easier control frame leg: when the hand of an operator contacts the induction touch switch, the control circuit controls the linear motor to extend to the farthest position (namely, the blocking sheet blocks the through hole); when the hand of the operator does not contact the inductive touch switch, the control circuit controls the linear motor to retract to the nearest position (namely, the through hole is not blocked).

In summary, the preferred embodiments of the present invention are only examples, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. A level gauge stand, characterized by: the device comprises a vertically arranged ferrule (1), wherein the inner ring of the ferrule (1) is matched with a leveling rod (2) in shape; the bottom of the ferrule (1) is provided with three telescopic frame legs (3), and locking devices are arranged on the frame legs (3);

the frame leg (3) comprises an upper leg rod (31) hinged with the ferrule (1), a working cavity (32) is arranged in the upper leg rod (31), one end of the working cavity (32) is closed, the other end of the working cavity (32) is an end cover (33) arranged at the tail end of the upper leg rod (31), and an end cover hole is formed in the circle center of the end cover (33); a piston head (34) capable of moving along the working cavity (32) is arranged in the working cavity (32), a through hole (35) is formed in the piston head (34), and a lower leg rod (36) which penetrates out of the end cover hole and is coaxial with the upper leg rod (31) is connected to the side face, corresponding to the end cover (33), of the piston head (34); and a sealing ring is arranged between the end cover hole and the lower leg rod (36), and the working cavity (32) is filled with silicon oil.

2. A level support according to claim 1, wherein: a motor cavity (37) is formed in one side, located on the through hole (35), of the piston head (34), and a sealing cover is arranged outside the motor cavity (37); the locking device comprises a linear motor (38) arranged in a motor cavity (37), the working direction of the linear motor (38) is perpendicular to the central shaft of the through hole (35), and a blocking piece (39) which is enough to block the through hole (35) is arranged at the output end of the linear motor (38).

3. A level support according to claim 2, wherein: a power supply and a single chip microcomputer which are connected with the linear motor (38) are further arranged in the motor cavity (37), and a switch (4) which is electrically connected with the single chip microcomputer is arranged on the ferrule (1).

4. A level support according to claim 3, wherein: the switch (4) is a capacitive sensing touch switch.