CN215373940U

CN215373940U - Measuring equipment for geotechnical engineering investigation

Info

Publication number: CN215373940U
Application number: CN202121518377.8U
Authority: CN
Inventors: 王云; 武旺芝; 李金虎
Original assignee: Taiyuan Building Materials Geological Engineering Investigation Institute Co ltd
Current assignee: Taiyuan Building Materials Geological Engineering Investigation Institute Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-12-31
Anticipated expiration: 2031-07-06

Abstract

The utility model belongs to the technical field of geotechnical engineering investigation equipment, in particular to the field of measuring equipment for geotechnical engineering investigation, which comprises a measuring platform, an A-shaped electric telescopic rod, a sinking measuring block, a platform supporting column, a spool disc, a measuring rope, a motor, a storage battery and a positioning block, wherein the output end of the motor is provided with a linkage shaft, the upper end of the positioning block is provided with a limiting cylinder, after the measuring equipment moves to a position needing to be used and the sinking measuring block is positioned at a position right above a measuring hole, the operation of the B-shaped electric telescopic rod is started through a control switch, then the B-shaped electric telescopic rod carries out extension motion in the vertical direction and drives the positioning block to descend in the vertical direction until a positioning tooth is inserted into the ground, namely the positioning block is contacted with the ground mutually, the positioning block is used for sliding of the measuring rope through the arrangement of a through hole groove, and is used for enhancing the stability of the measuring equipment in the measuring process through the arrangement of the positioning block, through the transparent limiting barrel, the numerical value of the scale mark can be conveniently read.

Description

Measuring equipment for geotechnical engineering investigation

Technical Field

The utility model belongs to the technical field of geotechnical engineering investigation equipment, and particularly relates to measuring equipment for geotechnical engineering investigation.

Background

Geotechnical engineering is a new technical system established in civil engineering practice in the 60 s of the 20 th century in European and American countries, and is a research object of geotechnical engineering, wherein the geotechnical engineering is used for solving problems of rock and soil engineering, including problems of foundation and foundation, slope, underground engineering and the like.

The geotechnical engineering investigation refers to finding out, analyzing and evaluating geological and environmental characteristics and geotechnical engineering conditions of a construction site according to requirements of construction engineering, and compiling activities of investigation files, and aims at the geotechnical engineering investigation: the testing means and method are used for carrying out investigation research and analysis judgment on the building site, researching the geological conditions of various engineering buildings and the influence of the construction on the natural geological environment; research the measures of ensuring the strength and stability of the foundation and preventing the foundation from having unallowable deformation when the foundation, the foundation and the upper structure work together; the bearing capacity of the foundation ground is provided, and engineering addresses and geotechnical engineering data required by foundation design and construction and foundation reinforcement when necessary are provided.

SUMMERY OF THE UTILITY MODEL

The existing measuring equipment for geotechnical engineering investigation is poor in stability of the device during measurement, and shakes during the measurement process, so that the final measurement result is influenced. The utility model provides a measuring device for geotechnical engineering investigation, which has the characteristics that after the measuring device is moved to a position to be used and a sinking measuring block is positioned at a position right above a measuring hole, the operation of a B-shaped electric telescopic rod is started through a control switch, then the B-shaped electric telescopic rod performs vertical extension movement and drives a positioning block to perform vertical descending movement until a positioning tooth is inserted into the ground, namely the positioning block is contacted with the ground, the sliding of a measuring rope is realized through the arrangement of a through hole groove, the stability of the measuring device in the measuring process is enhanced through the arrangement of the positioning block, and the numerical value of a scale mark is conveniently read through a limit cylinder which is arranged transparently.

The utility model provides the following technical scheme: the utility model provides a measuring equipment is used in geotechnical engineering reconnaissance, includes measuring platform, A type electric telescopic handle, sinks measuring block, platform support column, spool dish, measuring rope, motor, storage battery, locating piece, the upper end of sinking measuring block is provided with electro-magnet A, the inboard of sinking measuring block is provided with travel switch, the output of motor is provided with the universal driving shaft, the upper end of locating piece is provided with spacing section of thick bamboo, the inboard of locating piece is provided with electro-magnet B.

The measuring platform is arranged in a rectangular structure, the measuring platform is fixedly arranged at the upper end of a platform supporting column, the platform supporting column is arranged in a rectangular structure, the number of the platform supporting columns is two, two anti-skidding rollers are arranged at the left end and the right end of each platform supporting column, a platform through hole with a cylindrical structure is arranged in the center of the measuring platform, the diameter of the platform through hole is the same as that of the limiting cylinder, a wire coil fixing frame is arranged at the upper end of the measuring platform and is arranged in a rectangular structure, the length of the wire coil fixing frame is the same as the width of the measuring platform, the number of the wire coil fixing frames is two, the two wire coil fixing frames are symmetrically arranged, and a control switch is arranged at the right end of the wire coil fixing frame which is closer to the storage battery; through the setting of platform support column for support when removing measurement platform, through the setting of anti-skidding gyro wheel, make things convenient for measuring equipment in the use of complex environment.

The device comprises a measuring platform, a control switch, a fixing base, a base reinforcing tooth and a measuring head, wherein the number of the A-type electric telescopic rods is two, the two A-type electric telescopic rods are symmetrically and fixedly arranged at the lower end of the measuring platform, the two A-type electric telescopic rods are electrically connected with the control switch, the lower ends of the A-type electric telescopic rods are respectively provided with the fixing base, the fixing base is in a trapezoidal structure, the lower end of the fixing base is provided with the base reinforcing tooth, and the base reinforcing tooth is in an inverted triangular structure; after measuring equipment moved the position that needs to use, and sink and measure behind the position that the piece is located directly over the measuring hole, open A type electric telescopic handle's operation through control switch, A type electric telescopic handle carries out vertical decurrent extension motion this moment, and drive the vertical decurrent motion of unable adjustment base in step, then extend to the biggest state until A type electric telescopic handle, at this moment anti-skidding gyro wheel no longer with ground contact, the effort that the platform support column no longer provides the support to measuring platform promptly, holding power this moment is provided by A type electric telescopic handle, through the setting of base reinforcing tooth, be used for stretching into ground the inside, and then provide more stable holding power, thereby improve measuring accuracy.

The sinking measuring block is characterized in that the sinking plane of the sinking measuring block is in a circular structure, the side view plane of the sinking measuring block is in a trapezoidal structure, the inner side of the sinking measuring block is provided with a travel switch, the travel switch is electrically connected with the motor, the size of the electromagnet A is the same as that of the electromagnet B, and the electromagnet A and the electromagnet B are both electrically connected with the control switch; after the measuring equipment is fixed in position, the control switch is started to cut off the power of the electromagnet A and the electromagnet B, the magnetism between the electromagnet A and the electromagnet B disappears, then the sinking measuring block performs sinking motion under the gravity of the sinking measuring block, when the sinking measuring block sinks to the deepest part of the measuring hole, the travel switch is in contact with the bottom surface of the measuring hole, then the motor stops moving synchronously, and then corresponding measuring data are recorded.

The bobbin disc is arranged between the two bobbin fixing frames, the inner ring of the bobbin disc is provided with a rotating shaft, the left end and the right end of the rotating shaft extend into the inner sides of the corresponding bobbin fixing frames, and the left end of the rotating shaft is fixedly connected with the linkage shaft; after the motor starts to operate, the linkage shaft is driven to rotate, and then the rotating shaft and the spool disc are driven to synchronously rotate, so that the measurement rope is paid off and taken up.

The measuring device comprises a spool disc, a measuring rope, a positioning block and a measuring device, wherein the measuring rope is wound at the outer ring of the spool disc, the outer layer of the measuring rope is provided with scale marks, and the initial numerical value of the scale marks is added with the height of a sinking measuring block and subtracted by the height of the positioning block; the device is used for measuring the depth of the excavated measuring hole through the arrangement of the measuring rope.

The storage battery is electrically connected with the motor, the outer ring of the motor is provided with a protective shell A, the lower end of the protective shell A is provided with a mounting frame, and the bottom end of the mounting frame is fixedly connected with the upper end of the measuring platform; the storage battery is used for providing power support for the motor, and the motor is used for driving the spool disc to rotate.

The positioning block is arranged in a cylindrical structure, two reinforcing ribs are arranged at the upper end of the positioning block, the two reinforcing ribs are simultaneously and symmetrically positioned at the left end and the right end of the limiting cylinder, the limiting cylinder is arranged in a cylindrical hollow transparent mode, two B-type electric telescopic rods are arranged at the upper end of the positioning block, the two B-type electric telescopic rods are symmetrically arranged, the B-type electric telescopic rods are electrically connected with the control switch, a through hole groove is formed in the inner side of the positioning block, the diameter of the through hole groove is the same as that of the limiting cylinder, positioning teeth are arranged at the lower end of the positioning block, and the size of the positioning teeth is the same as that of the reinforcing teeth of the base; after measuring equipment moves the position that needs to use, and sink and measure the position that the piece is located the measuring hole directly over after, open B type electric telescopic handle's operation through control switch, then B type electric telescopic handle carries out the extension motion of vertical direction, and drive the descending motion of locating piece vertical direction, inject ground until the location tooth, locating piece and ground are the contact each other promptly, setting through the through-hole groove, a slip for measuring the rope, setting through the locating piece, a spacing section of thick bamboo for strengthening measuring equipment's among the measurement process, conveniently read the numerical value of scale mark through transparent setting.

The utility model has the beneficial effects that: after the measuring equipment is moved to a position to be used, and the sinking measuring block is positioned at a position right above the measuring hole, the operation of the A-type electric telescopic rod is started through the control switch, at the moment, the A-type electric telescopic rod performs vertical downward extension movement and synchronously drives the fixing base to vertically downward move until the A-type electric telescopic rod is extended to the maximum state, at the moment, the anti-skidding idler wheel is not in contact with the ground, namely, the platform support column does not provide supporting force for the measuring platform, at the moment, the supporting force is provided by the A-type electric telescopic rod and is used for extending into the ground through the arrangement of the base reinforcing teeth, and further more stable supporting force is provided, so that the measuring accuracy is improved, after the measuring equipment is fixed at the position, the control switch is started to cut off the power of the electromagnet A and the electromagnet B, and the magnetism between the electromagnet A and the electromagnet B disappears, then the sinking measuring block carries out sinking movement under the self gravity, when the sinking measuring block sinks to the deepest part of the measuring hole, the travel switch is contacted with the bottom surface of the measuring hole, then the motor stops moving synchronously, corresponding measuring data is recorded, after the measuring equipment moves to the position needing to be used, after the sinking measuring block is positioned at the position right above the measuring hole, the operation of the B-shaped electric telescopic rod is started through the control switch, then the B-type electric telescopic rod carries out the extension motion in the vertical direction and drives the positioning block to descend in the vertical direction until the positioning teeth are inserted into the ground, namely, the positioning block is contacted with the ground, the through hole groove is used for sliding the measuring rope, and the positioning block is arranged, the stability of the measuring equipment in the measuring process is enhanced, and the numerical value of the scale mark is conveniently read through the transparent limiting barrel.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

FIG. 3 is a schematic perspective view of a sag measurement block according to the present invention;

FIG. 4 is a schematic top perspective view of a positioning block of the present invention;

FIG. 5 is a schematic bottom perspective view of a positioning block of the present invention;

in the figure: 1. a measuring platform; 11. a wire coil fixing frame; 12. a control switch; 2. an A-type electric telescopic rod; 21. a fixed base; 211. base reinforcing teeth; 3. a sinking measurement block; 31. an electromagnet A; 32. a travel switch; 4. a platform support post; 41. anti-skid rollers; 5. a spool disc; 51. a rotating shaft; 6. measuring a rope; 61. scale lines; 7. a motor; 71. a protective shell A; 8. storing the battery; 81. a protective shell B; 9. positioning blocks; 91. a limiting cylinder; 92. reinforcing ribs; 93. a B-type electric telescopic rod; 94. a through hole slot; 95. an electromagnet B; 96. and positioning teeth.

Detailed Description

Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a measuring equipment is used in geotechnical engineering reconnaissance which characterized in that: including measuring platform 1, A type electric telescopic handle 2, the measuring block that sinks 3, platform support column 4, bobbin disc 5, measuring rope 6, motor 7, storage battery 8, locating piece 9, the upper end of the measuring block 3 that sinks is provided with electro-magnet A31, the inboard of the measuring block 3 that sinks is provided with travel switch 32, the output of motor 7 is provided with universal driving shaft 72, the upper end of locating piece 9 is provided with spacing section of thick bamboo 91, the inboard of locating piece 9 is provided with electro-magnet B95.

In this embodiment: the model of the A-type electric telescopic rod is as follows: kenoko GDA-D8; the type of the B-type electric telescopic rod is as follows: XDHA 12-100.

In this embodiment: the measuring platform 1 is arranged in a rectangular structure, the measuring platform 1 is fixedly arranged at the upper end of a platform supporting column 4, the platform supporting column 4 is arranged in a rectangular structure, the platform supporting column 4 is provided with two blocks, the left end and the right end of each platform supporting column 4 are respectively provided with two anti-skidding idler wheels 41, the center of the measuring platform 1 is provided with a platform through hole in a cylindrical structure, the diameter of the platform through hole is the same as that of a limiting cylinder 91, the upper end of the measuring platform 1 is provided with a wire coil fixing frame 11, the wire coil fixing frame 11 is arranged in a rectangular structure, the length of the wire coil fixing frame 11 is the same as the width of the measuring platform 1, the wire coil fixing frame 11 is provided with two blocks, the two wire coil fixing frames 11 are symmetrically arranged, and the right end of the wire coil fixing frame 11 which is closer to the storage battery 8 is provided with a control switch 12; through the setting of platform support column 4 for support when removing measuring platform 1, through the setting of anti-skidding gyro wheel 41, make things convenient for measuring equipment in the use of complex environment.

The number of the A-type electric telescopic rods 2 is two, the two A-type electric telescopic rods 2 are symmetrically and fixedly installed at the lower end of the measuring platform 1, the two A-type electric telescopic rods 2 are both electrically connected with the control switch 12, the lower ends of the A-type electric telescopic rods 2 are both provided with a fixed base 21, the fixed base 21 is in a trapezoidal structure arrangement, the lower end of the fixed base 21 is provided with base reinforcing teeth 211, and the base reinforcing teeth 211 are in an inverted triangular structure arrangement; after measuring equipment moves the position that needs to use, and sink behind the position directly over measuring block 3 is located the measuring hole, open the operation of A type electric telescopic handle 2 through control switch 12, A type electric telescopic handle 2 carries out vertical decurrent extension motion this moment, and drive unable adjustment base 21 vertical decurrent motion in step, then extend to the biggest state until A type electric telescopic handle 2, at this moment anti-skidding gyro wheel 41 no longer contacts with ground, platform support column 4 does not provide the effort of support to measuring platform 1 again, the holding power of this moment is provided by A type electric telescopic handle 2, through the setting of base reinforcing tooth 211, be used for stretching into ground the inside, and then provide more stable holding power, thereby improve measuring accuracy.

The depression measuring block 3 is arranged in a circular structure in a plan view, the depression measuring block 3 is arranged in a trapezoidal structure in a side view, a travel switch 32 is arranged on the inner side of the depression measuring block 3, the travel switch 32 is electrically connected with the motor 7, the size of the electromagnet A31 is the same as that of the electromagnet B95, and the electromagnet A31 and the electromagnet B95 are both electrically connected with the control switch 12; after the measuring equipment is fixed in position, the control switch 12 is started to cut off the power of the electromagnet A31 and the electromagnet B95, the magnetism between the electromagnet A31 and the electromagnet B95 disappears, then the sinking measuring block 3 performs sinking motion under the gravity of the sinking measuring block, when the sinking measuring block 3 sinks to the deepest part of the measuring hole, the travel switch 32 is in contact with the bottom surface of the measuring hole, then the motor 7 stops moving synchronously, and corresponding measuring data are recorded.

The spool disc 5 is arranged between the two spool fixing frames 11, the inner ring of the spool disc 5 is provided with a rotating shaft 51, the left end and the right end of the rotating shaft 51 both extend into the inner sides of the corresponding spool fixing frames 11, and the left end of the rotating shaft 51 is fixedly connected with the linkage shaft 72; when the motor 7 starts to operate, the linkage shaft 72 is driven to rotate, and then the rotating shaft 51 and the spool disc 5 are driven to synchronously rotate, so that the measurement rope 6 is paid off and taken up.

The measuring rope 6 is wound at the outer ring of the spool disc 5, the outer layer of the measuring rope 6 is provided with a scale mark 61, and the initial numerical value of the scale mark 61 is added with the height of the sinking measuring block 3 and subtracted by the height of the positioning block 9; the depth of the excavated measuring hole is measured by the arrangement of the measuring line 6.

The outer ring of the storage battery 8 is provided with a protective shell B81, the storage battery 8 is electrically connected with the motor 7, the outer ring of the motor 7 is provided with a protective shell A71, the lower end of the protective shell A71 is provided with an installation frame, and the bottom end of the installation frame is fixedly connected with the upper end of the measuring platform 1; through the arrangement of the storage battery 8, the power support is provided for the motor 7, and through the arrangement of the motor 7, the rotation of the spool disc 5 is driven.

The positioning block 9 is arranged in a cylindrical structure, reinforcing ribs 92 are arranged at the upper end of the positioning block 9, two reinforcing ribs 92 are arranged, the two reinforcing ribs 92 are simultaneously and symmetrically arranged at the left end and the right end of a limiting cylinder 91, the limiting cylinder 91 is arranged in a cylindrical hollow transparent manner, a B-shaped electric telescopic rod 93 is arranged at the upper end of the positioning block 9, the number of the B-shaped electric telescopic rods 93 is two, the two B-shaped electric telescopic rods 93 are symmetrically arranged, the B-shaped electric telescopic rods 93 are electrically connected with a control switch 12, a through hole groove 94 is formed in the inner side of the positioning block 9, the diameter of the through hole groove 94 is the same as that of the limiting cylinder 91, positioning teeth 96 are arranged at the lower end of the positioning block 9, and the size of the positioning teeth 96 is the same as that of the base reinforcing teeth 211; after measuring equipment moves to the position that needs to use, and sink measuring block 3 and be located the position directly over the measuring hole after, open the operation of B type electric telescopic handle 93 through control switch 12, then B type electric telescopic handle 93 carries out the extension motion of vertical direction, and drive the descending motion of locating piece 9 vertical direction, inject ground until location tooth 96, locating piece 9 and ground are contacted each other promptly, setting through-hole groove 94, a slip for measuring rope 6, setting through locating piece 9, a stability for strengthening measuring equipment in the measurement process, spacing section of thick bamboo 91 through transparent setting, conveniently read the numerical value of scale mark 61.

The working principle and the using process of the utility model are as follows: after the measuring equipment moves to a position to be used, and the sinking measuring block 3 is located at a position right above the measuring hole, the operation of the A-shaped electric telescopic rod 2 is started through the control switch 12, at the moment, the A-shaped electric telescopic rod 2 extends vertically downwards and synchronously drives the fixing base 21 to move vertically downwards, then until the A-shaped electric telescopic rod 2 extends to the maximum state, at the moment, the anti-skidding roller 41 is not contacted with the ground any more, namely, the platform supporting column 4 does not provide supporting acting force for the measuring platform 1 any more, at the moment, the supporting force is provided by the A-shaped electric telescopic rod 2, the anti-skidding roller is used for extending into the ground through the arrangement of the base reinforcing teeth 211, so that more stable supporting force is provided, then the control switch 12 is started to cut off the power of the electromagnet A31 and the electromagnet B95, further, the magnetism between the electromagnet A31 and the electromagnet B95 disappears, and then the sinking measuring block 3 performs sinking motion under the self gravity, meanwhile, the motor 7 starts to operate, then the linkage shaft 72 is driven to rotate, the rotating shaft 51 and the bobbin disc 5 are driven to synchronously rotate, so that the measurement rope 6 is paid off, when the top end of the sinking measurement block 3 is lower than the ground, the paying off of the measurement rope 6 is stopped, then the operation of the B-type electric telescopic rod 93 is started through the control switch 12, then the B-type electric telescopic rod 93 carries out the extending movement in the vertical direction and drives the positioning block 9 to carry out the descending movement in the vertical direction until the positioning teeth 96 are inserted into the ground, namely the positioning block 9 is contacted with the ground, then the paying off of the measurement rope 6 is continued, the through hole groove 94 is used for the sliding of the measurement rope 6, the positioning block 9 is used for enhancing the stability of the measurement equipment in the measurement process, when the sinking measurement block 3 sinks to the deepest position of the measurement hole, the travel switch 32 is contacted with the bottom surface of the measurement hole, then the motor 7 stops moving synchronously, the depth of the excavated measuring hole is measured through the arrangement of the measuring rope 6, and the numerical value of the scale mark 61 is conveniently read through the limit cylinder 91 which is arranged in a transparent mode.

Claims

1. The utility model provides a measuring equipment is used in geotechnical engineering reconnaissance which characterized in that: including measuring platform, A type electric telescopic handle, measuring block, platform support column, spool dish, measuring rope, motor, savings battery, locating piece sink, the upper end of measuring block is provided with electro-magnet A sink, the inboard of measuring block that sinks is provided with travel switch, the output of motor is provided with the universal driving shaft, the upper end of locating piece is provided with spacing section of thick bamboo, the inboard of locating piece is provided with electro-magnet B.

2. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: measuring platform sets up for the rectangle structure, measuring platform is fixed to be set up in the position of platform support column upper end, the platform support column sets up for the rectangle structure, the platform support column is provided with two altogether, the left side of every platform support column, the right side both ends all are provided with two anti-skidding gyro wheels, measuring platform's center is provided with the platform through-hole of cylindrical structure, the diameter of platform through-hole is the same with the diameter of spacing section of thick bamboo, measuring platform's upper end is provided with the drum mount, the drum mount sets up for the rectangle structure, the length of drum mount is the same with measuring platform's width, the drum mount is provided with two altogether, two drum mount symmetric installation settings, the right-hand member of the nearer drum mount apart from storage battery is provided with control switch.

3. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: a type electric telescopic handle is provided with two altogether, and the fixed mounting of two A type electric telescopic handle symmetries is in the position of measuring platform lower extreme, two A type electric telescopic handle all with control switch electric connection, and A type electric telescopic handle's lower extreme all is provided with unable adjustment base, and unable adjustment base is the trapezium structure setting, and unable adjustment base's lower extreme is provided with the base and consolidates the tooth, and the base consolidates the tooth and sets up for the structure of falling the triangle-shaped.

4. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: the depression plane of sinking measuring block is circular structure setting, and the side view plane of sinking measuring block is trapezium structure setting, and the inboard of sinking measuring block is provided with travel switch, travel switch and motor electric connection, and electro-magnet A's size is the same with electro-magnet B's size, and electro-magnet A and electro-magnet B all with control switch electric connection.

5. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: the bobbin disc is arranged between the two bobbin fixing frames, the inner ring of the bobbin disc is provided with a rotating shaft, the left end and the right end of the rotating shaft both extend into the inner sides of the corresponding bobbin fixing frames, and the left end of the rotating shaft is fixedly connected with the universal driving shaft.

6. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: the measuring rope is wound at the outer ring of the spool disc, the outer layer of the measuring rope is provided with scale marks, and the initial numerical value of the scale marks is added with the height of the sinking measuring block and subtracted by the height of the positioning block.

7. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: the outer ring of the storage battery is provided with a protective shell B, the storage battery is electrically connected with the motor, the outer ring of the motor is provided with a protective shell A, the lower end of the protective shell A is provided with a mounting frame, and the bottom end of the mounting frame is fixedly connected with the upper end of the measuring platform.

8. The surveying equipment for geotechnical engineering investigation of claim 1, characterized by: the locating piece sets up for cylindrical structure, the upper end of locating piece is provided with the strengthening rib, the strengthening rib is provided with two altogether, two strengthening ribs are symmetrical simultaneously and are located a spacing section of thick bamboo left side, the position at right both ends, a spacing section of thick bamboo is cylindrical hollow transparent setting, the upper end of locating piece is provided with B type electric telescopic handle, B type electric telescopic handle is total two, two B type electric telescopic handle symmetry installations set up, B type electric telescopic handle and control switch electric connection, the inboard of locating piece is provided with the through-hole groove, the diameter in through-hole groove is the same with the diameter of a spacing section of thick bamboo, the lower extreme of locating piece is provided with the location tooth, the size of location tooth is the same with the base size of consolidating the tooth.