CN219637980U

CN219637980U - Detector for pile hole forming quality of rotary digging pile

Info

Publication number: CN219637980U
Application number: CN202320934884.2U
Authority: CN
Inventors: 李延雄; 李进; 蒋寅平; 王亚峰
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-09-05
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses a detector, in particular discloses a detector for the hole forming quality of a rotary digging pile hole, and belongs to the technical field of design and manufacture of detection equipment of construction engineering buildings. The detector for the pile hole forming quality of the rotary digging pile can remarkably reduce labor intensity of operators. The detector comprises a control system, a lifting mechanism and a detection system, wherein the detection system can lift in the pile hole in a self-supporting manner through the lifting mechanism, and the depth of the pile hole to be detected and the thickness of sediment at the bottom of the pile hole are detected through the detection system and the lifting mechanism under the cooperation of the control system.

Description

Detector for pile hole forming quality of rotary digging pile

Technical Field

The utility model relates to a detector, in particular to a detector for the hole forming quality of a rotary digging pile hole, and belongs to the technical field of design and manufacture of detection equipment of construction engineering buildings.

Background

The rotary drilling bored concrete pile is generally a pile type constructed by a rotary drilling rig, and in order to reduce deviation between actual pile depth and designed pile depth, the thickness of the mechanical rotary drilling pile hole-forming pile bottom sediment is ensured to meet the standard requirement, and the mechanical rotary drilling pile hole-forming pile depth and the pile bottom sediment are always uniformly detected in the construction process.

When the existing various detectors work, the sediment probe is required to descend to the pile bottom through the sediment signal wire coil, and then the sediment thickness is detected through the sediment probe. In the process of descending the sediment probe through the sediment signal wire coil, basically, no protection exists, the signal wire is often supported and guided by the hand in the descending process, the friction between the signal wire and the pile wall is avoided, and meanwhile, the sediment probe is easy to shake in the hole pile to collide, so that the descending speed is also required to be reduced, and a certain trouble is brought to detection.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the detector for the pile hole forming quality of the rotary digging pile can remarkably reduce labor intensity of operators.

The technical scheme adopted for solving the technical problems is as follows: a detector for dig stake hole pore-forming quality soon, the detector include control system, elevating system and detecting system, but detecting system passes through elevating system self-supporting and goes up and down in the stake hole, the degree of depth of stake hole and the thickness of stake hole bottom sediment that needs to detect pass through detecting system, elevating system under control system's cooperation.

Further, the lifting mechanism comprises a frame, a self-supporting component and a lifting component containing a signal wire, wherein the lifting component is movably arranged on the frame, and a detection system fixedly arranged at the free end of the signal wire can self-support and lift in the pile hole through the self-supporting component.

The preferred mode of above-mentioned scheme is, self-sustaining subassembly include guide ring and position adjustment movable frame, the guide ring is installed the free end of position adjustment movable frame, the position adjustment movable frame passes through fixed knot constructs with frame swing joint, the free end of signal line passes the guide ring after being connected with detecting system.

Further, the position adjustment movable frame comprises a door-type telescopic support frame, the guide ring is fixedly arranged in the middle of the horizontal edge of the door-type telescopic support frame, the fixed structure comprises two adjusting sleeves fixedly arranged at the top of the frame, and the door-type telescopic support frame is sleeved in the two adjusting sleeves through two telescopic vertical edges.

The preferred mode of above-mentioned scheme is, lifting unit still include wire wheel and rocking arm, the one end of the signal line of winding on the wire wheel is adorned admittedly and is taken turns the corresponding position department of wire wheel, the wire wheel is on the frame through the support that its both ends are movable, the detecting system of admittedly adorning at signal line free end is through the rocking arm in the rotatory in-process of wire wheel around self axial central line along vertical direction.

Further, the detection system comprises a detection bracket, a driving mechanism and a detection assembly, wherein the control end of the driving mechanism is connected with the control system, the free end of the signal wire is connected with the top of the detection bracket, the detection assembly is arranged on the inner side of the middle lower part of the detection bracket, and the driving mechanism is arranged on the inner side of the middle upper part of the detection bracket; in the pile hole bottom sediment thickness detection process, the detection component stretches out the detection support through actuating mechanism under control system's cooperation and detects.

The preferred mode of above-mentioned scheme is, detects the support and includes detecting section of thick bamboo and two at least adjustable gag lever post of group, and actuating mechanism arranges the well upper portion in detecting the section of thick bamboo, and the detection subassembly is arranged in detecting the well lower part in the section of thick bamboo, and the free end of signal line is connected with the top of detecting the section of thick bamboo, and detecting system passes through the signal line in the in-process of stake hole lift and limits its position through the adjustable gag lever post of each group of all arranging along circumference.

The control system is a detection host, the driving mechanism is a servo motor with a control end connected with the detection host, each group of adjustable limiting rods comprises an internal thread pipe, a connecting rod, a spring and an arc-shaped plate containing a mounting rod, one end part of the connecting rod is provided with a mounting hole extending along the axial direction, one end of the connecting rod, which is not provided with the mounting hole, is connected into the internal thread pipe in a telescopic screwing way, and the arc-shaped plate is arranged on one end of the connecting rod extending out of the internal thread pipe in a telescopic way along the axial direction under the cooperation of the spring and the mounting hole; the adjustable limiting rods are uniformly distributed on the detection cylinder along the circumferential direction through the internal thread pipe.

The preferable mode of above-mentioned scheme is, the detection component include pointed cone, pressure sensor and mounting group, pointed cone passes through pressure sensor to be arranged in the lower extreme of mounting group, the mounting group is connected with servo motor's power take off through its upper end along vertical telescopic.

The device comprises a detection cylinder, a servo motor, a guide rod, a pressure sensor and a control unit, wherein the detection cylinder is arranged on the upper part of the detection cylinder, the pressure sensor is connected with the pressure sensor, the pressure sensor is arranged at one end of the installation plate, which is not provided with the fixed rod, the pressure sensor is arranged at the position of the pressure sensor, and the pressure sensor is arranged at the position of the pressure sensor;

a chassis is also arranged outside the open lower end of the detection cylinder.

The beneficial effects of the utility model are as follows: the technical scheme provided by the utility model is that a set of detectors comprising a control system, a lifting mechanism and a detection system are arranged, the detection system can self-support lift in a pile hole through the lifting mechanism, and then the depth of the pile hole to be detected and the thickness of sediment at the bottom of the pile hole are detected through the detection system and the lifting mechanism under the cooperation of the control system. Therefore, the detection system which is lowered does not need to be manually supported when the depth of the pile hole of the rotary digging pile and the thickness of the sediment are detected, but can be lifted in the pile hole in a self-supporting way through the lifting mechanism, so that the degree of manual participation in the detection process can be greatly reduced, and the aim of reducing the labor intensity of operators is fulfilled. Furthermore, through the improvement to the detection system, the movable position of the detection cylinder is limited by adding the adjustable limiting rod, and the damage probability of the equipment in the detection can be reduced.

Drawings

FIG. 1 is a schematic three-dimensional structure of a detector for pile hole forming quality of a rotary-excavated pile according to the present utility model;

FIG. 2 is a front view of a detector for rotary pile hole quality of a pile hole of the present utility model;

FIG. 3 is a detailed view of an adjustable stop lever according to the present utility model;

fig. 4 is a schematic view of the installation of the pointed cone and the pressure sensor on the mounting disc according to the utility model.

Marked in the figure as: the automatic position adjustment device comprises a control system 1, a lifting mechanism 2, a detection system 3, a frame 4, a self-holding component 5, a signal wire 6, a guide ring 7, a position adjustment movable frame 8, a fixed structure 9, a wire wheel 10, a rocker arm 11, a detection support 12, a driving mechanism 13, a detection component 14, a detection cylinder 15, an internal thread tube 16, a connecting rod 17, a spring 18, a mounting rod 19, an arc plate 20, a mounting hole 21, a pointed cone 22, a pressure sensor 23, a mounting plate 24, a guide rod 25, a slide plate 26, a screw rod 27, a fixing rod 28, a mounting plate 29 and a chassis 30.

Detailed Description

The utility model provides a detector for the hole forming quality of a rotary digging pile hole, which can remarkably reduce the labor intensity of operators, as shown in fig. 1, 2, 3 and 4. The detector comprises a control system 1, a lifting mechanism 2 and a detection system 3, wherein the detection system 3 can lift in a pile hole in a self-supporting manner through the lifting mechanism 2, and the depth of the pile hole to be detected and the thickness of sediment at the bottom of the pile hole are detected through the detection system 3 and the lifting mechanism 2 under the cooperation of the control system 1. The technical scheme provided by the utility model is that a set of detectors comprising a control system, a lifting mechanism and a detection system are arranged, the detection system can self-support lift in a pile hole through the lifting mechanism, and then the depth of the pile hole to be detected and the thickness of sediment at the bottom of the pile hole are detected through the detection system and the lifting mechanism under the cooperation of the control system. Therefore, the detection system which is lowered does not need to be manually supported when the depth of the pile hole of the rotary digging pile and the thickness of the sediment are detected, but can be lifted in the pile hole in a self-supporting way through the lifting mechanism, so that the degree of manual participation in the detection process can be greatly reduced, and the aim of reducing the labor intensity of operators is fulfilled.

Correspondingly, in order to adapt to the structure of the excavated rotary pile hole, and simultaneously simplify the components of the detector according to the utility model as much as possible, so as to facilitate the manufacture, assembly and subsequent use, the lifting mechanism 2 according to the utility model comprises a frame 4, a self-supporting component 5 and a lifting component comprising a signal wire 6, wherein the lifting component is movably arranged on the frame 4, and the detection system 3 fixedly arranged at the free end of the signal wire 6 can be lifted and lowered in the pile hole by self-supporting component 5. At this time, the self-holding assembly 5 comprises a guide ring 7 and a position adjusting movable frame 8, the guide ring 7 is arranged at the free end of the position adjusting movable frame 8, the position adjusting movable frame 8 is movably connected with the frame 4 through a fixing structure 9, and the free end of the signal wire 6 is connected with the detection system 3 after passing through the guide ring 7. The position adjustment movable frame 8 comprises a door-shaped telescopic support frame, the guide ring 7 is fixedly arranged in the middle of the horizontal edge of the door-shaped telescopic support frame, the fixed structure 9 comprises two adjusting sleeves fixedly arranged at the top of the frame, and the door-shaped telescopic support frame is sleeved in the two adjusting sleeves through two telescopic vertical edges.

According to the actual condition of the construction site and the requirement when in use, the lifting assembly further comprises a wire wheel 10 and a rocker arm 11, one end of the signal wire 6 wound on the wire wheel 10 is fixedly arranged at the corresponding position of the wire wheel 10, the wire wheel 10 is movably supported on the frame 4 through two ends of the wire wheel, and the detection system 3 fixedly arranged at the free end of the signal wire is lifted in the vertical direction in the process of rotating the wire wheel 10 around the axial center line of the wire wheel through the rocker arm 11.

Further, as an important component of the detector of the present utility model, in order to improve the detection effect and at the same time to avoid the damage caused by the collision of the detection component with the pile hole wall in the use process to the greatest extent, the detection system 3 of the present utility model comprises a detection bracket 12, a driving mechanism 13 and a detection component 14, wherein the control end of the driving mechanism 13 is connected with the control system 1, the free end of the signal wire 6 is connected with the top of the detection bracket 12, the detection component 14 is arranged on the inner side of the middle lower part of the detection bracket, and the driving mechanism 13 is arranged on the inner side of the middle upper part of the detection bracket; in the pile hole bottom sediment thickness detection process, the detection component 14 stretches out the detection support 12 through the driving mechanism 13 under the cooperation of the control system 1 to detect. Correspondingly, the detection bracket 12 comprises a detection cylinder 15 and at least two groups of adjustable limiting rods, the driving mechanism 13 is arranged at the middle upper part in the detection cylinder 15, the detection assembly 14 is arranged at the middle lower part in the detection cylinder 15, the free end of the signal wire 6 is connected with the top of the detection cylinder 15, and the position of the detection system 3 is limited by the groups of adjustable limiting rods which are arranged along the circumferential direction in the process of lifting the signal wire 6 in the pile hole. In combination with the prior art, especially the standard parts, in order to reduce the use of special spare parts, the control system 1 of the utility model is a detection host, the driving mechanism 13 is a servo motor with a control end connected with the detection host, each group of adjustable limiting rods comprises an internal threaded pipe 16, a connecting rod 17, a spring 18 and an arc-shaped plate 20 containing a mounting rod 19, one end of the connecting rod 17 is provided with a mounting hole 21 extending along the axial direction, one end of the connecting rod 17, through which the connecting rod 17 is not provided with the mounting hole 21, is connected in the internal threaded pipe 16 in a telescopic way, and the arc-shaped plate 20 is mounted on one end of the connecting rod 17 extending out of the internal threaded pipe 16 in a telescopic way through the mounting rod 19 under the cooperation of the spring 18 and the mounting hole 21; the adjustable limiting rods are uniformly distributed on the detection cylinder 15 along the circumferential direction through the internal thread pipe 16. At this time, the detecting assembly 14 includes a pointed cone 22, a pressure sensor 23 and a mounting member set, wherein the pointed cone 22 is disposed at the lower end of the mounting member set through the pressure sensor 23, and the mounting member set is connected with the power output end of the servo motor through the upper end thereof in a vertically telescopic manner. More specifically, the mounting assembly comprises a mounting plate 24, a guide rod 25, a slide plate 26, a screw rod 27, a fixing rod 28 and a mounting plate 29, wherein a threaded hole and a guide hole are formed in the slide plate 26, a servo motor is fixedly arranged at the upper part in the detection cylinder 15 through the mounting plate 24, the screw rod 27 is fixedly connected with the power output end of the servo motor, which extends out of the mounting plate 24, the upper end of the guide rod 25 penetrating through the guide hole is fixedly connected with the mounting plate 24, the mounting plate 29 is fixedly connected with the slide plate 26 through the fixing rod 28, the pressure sensor 23 is arranged at one end of the mounting plate 29, where the fixing rod 28 is not arranged, and the slide plate 26 can be lifted in the vertical direction under the driving force output by the servo motor through the screw rod 27 and the threaded hole;

a chassis 30 is also disposed outside the open lower end of the detection cylinder 15.

In summary, the detector provided by the utility model has the following advantages of detecting the pile hole of the rotary digging pile,

this dig stake pore-forming stake end sediment detector soon of position adjustment adjustable shelf is through pulling the regulating plate foretell to the guiding ring to suitable position and fixed to lead through the guiding ring to the signal line, avoid signal line and hole stake wall friction and impaired, reduce the working strength of manual support simultaneously, then drive the arc under the elastic action of swivelling joint lever cooperation spring and paste with hole stake inner wall and even but not extrude mutually, make the test probe can not receive the collision at the in-process that descends, finally make it decline that can be safe detect the work, thereby solved the problem that lacks the protection in the testing process.

The technical scheme of the utility model is further described by the following specific examples:

example 1

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-4, the rotary digging pile hole forming pile bottom sediment detector in this embodiment includes: the signal box, the detection host computer is installed to one side of signal box, and the intermediate position department of signal box one side rotates and is connected with the rocking handle, the reel is installed to the one end of rocking handle, and the outer wall of reel is provided with the signal line, detecting probe is installed to the bottom of signal line, and detecting probe inside top is installed servo motor, the lead screw is installed to servo motor's output, and the outer wall of lead screw rotates and is connected with the sleeve, the slide dish is installed to telescopic outer wall, and all weld around the slide dish bottom has the dead lever, the mounting disc is installed to the bottom of dead lever, and pressure sensor is all installed to the both sides of mounting disc bottom, the pointed cone is installed to pressure sensor's bottom, the regulation pipe is all installed to the both sides of signal box top, and the inside sliding connection of regulation pipe has the regulating plate, the guide ring is installed to the one end of regulating plate.

As shown in fig. 1 and 2, in this embodiment, the bottom end of the outer wall of the detection probe is provided with a chassis, and the diameter of the outer ring of the chassis is larger than that of the outer ring of the detection probe.

It should be noted that, because the outer ring diameter of chassis is greater than the outer ring diameter of test probe, increase area of contact guarantees self stability.

As shown in fig. 2, in this embodiment, guide rods are mounted on both sides of the inner top end of the detection probe, and the guide rods can slide relatively on the slide plate.

It should be noted that, because the guide bar can slide relatively on the slide plate, the guide bar is convenient for playing a role in positioning and guiding.

As shown in fig. 1, 2 and 3, in this embodiment, the upper ends of two sides of the outer wall of the detection probe are all provided with an internal threaded pipe, the inner wall of the internal threaded pipe is connected with a connecting rod through threaded rotation, and one side of the inner part of the connecting rod is slidingly connected with an arc plate.

It should be noted that the connecting rod is rotated inside the internally threaded tube, so that the arc plate can be conveniently adjusted to a proper position to adapt to hole piles with different diameters.

As shown in fig. 1 and 2, in this embodiment, one end of the top end of the adjusting tube is rotatably connected with a fixing bolt, and fixing holes are uniformly formed on the top end of the adjusting plate below the fixing bolt.

It should be noted that, through rotating the inside of fixed orifices card income corresponding, realize the fixed to regulating plate position.

As shown in fig. 3, in this embodiment, a spring is installed on one side of the inside of the connecting rod, and one side of the spring is connected to the arc plate.

It should be noted that the curved plate is aligned with the hole pile under the action of the spring, but has no extrusion force, and meanwhile, the spring is convenient for buffering to a certain extent.

It can be understood that this dig stake pore-forming stake end sediment detector soon can be at the in-process that descends the detection, carries out the location direction to the signal line, avoids holding the trouble of signal line, also avoids the signal line to receive wearing and tearing, plays good buffering protection at the in-process that descends simultaneously, avoids receiving the striking and leads to the part impaired.

The working principle of the embodiment is as follows:

after pile-type shaping of dig rig construction soon, place this detector in hole stake one side, then the pulling regulating plate slides in the regulation intraductal, adjust the guide ring to suitable position, it locks to rotate the inside fixed orifices that the dead bolt blocked corresponding, thereby be convenient for lead the transfer of signal line, then the elastic action of connecting rod cooperation spring drives the arc and pastes mutually with hole stake inside and even but do not have the extrusion force, thereby play the effect of anticollision protection at the in-process that test probe descends, finally when chassis and sediment contact, drive the lead screw rotation through the work of detection host computer control servo motor, thereby drive sleeve and slide disc down move under the direction of guide rod, and then make the pointed cone insert in the sediment, until contacting hard ore, at this moment, pressure sensor detects the change of pressure, can stop work, judge the degree of depth of sediment.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A detector for dig stake hole pore-forming quality soon, its characterized in that: the detector comprises a control system (1), a lifting mechanism (2) and a detection system (3), wherein the detection system (3) can lift in a pile hole in a self-supporting manner through the lifting mechanism (2), and the depth of the pile hole to be detected and the thickness of sediment at the bottom of the pile hole are detected through the detection system (3) and the lifting mechanism (2) under the cooperation of the control system (1).

2. The detector for rotary drilling pile hole forming quality according to claim 1, wherein: the lifting mechanism (2) comprises a frame (4), a self-holding component (5) and a lifting component containing a signal wire (6), wherein the lifting component is movably arranged on the frame (4), and the detection system (3) fixedly arranged at the free end of the signal wire (6) can lift in a pile hole in a self-holding manner through the self-holding component (5).

3. A detector for rotary pile hole forming quality according to claim 2, wherein: the self-holding assembly (5) comprises a guide ring (7) and a position adjusting movable frame (8), the guide ring (7) is arranged at the free end of the position adjusting movable frame (8), the position adjusting movable frame (8) is movably connected with the frame (4) through a fixing structure (9), and the free end of the signal wire (6) penetrates through the guide ring (7) and then is connected with the detection system (3).

4. A detector for rotary pile hole forming quality according to claim 3, wherein: the position adjusting movable frame (8) comprises a door-type telescopic support frame, the guide ring (7) is fixedly arranged in the middle of the horizontal edge of the door-type telescopic support frame, the fixed structure (9) comprises two adjusting sleeves fixedly arranged at the top of the frame, and the door-type telescopic support frame is sleeved in the two adjusting sleeves through two telescopic vertical edges.

5. A detector for rotary pile hole forming quality according to claim 2, 3 or 4, characterised in that: the lifting assembly further comprises a wire wheel (10) and a rocker arm (11), one end of a signal wire (6) wound on the wire wheel (10) is fixedly arranged at the corresponding position of the wire wheel (10), the wire wheel (10) is movably supported on the frame (4) through two ends of the wire wheel, and the detection system (3) fixedly arranged at the free end of the signal wire is lifted along the vertical direction in the process of rotating the wire wheel (10) around the axial central line of the wire wheel through the rocker arm (11).

6. The detector for rotary drilling pile hole forming quality according to claim 5, wherein: the detection system (3) comprises a detection bracket (12), a driving mechanism (13) and a detection assembly (14), wherein the control end of the driving mechanism (13) is connected with the control system (1), the free end of the signal wire (6) is connected with the top of the detection bracket (12), the detection assembly (14) is arranged on the inner side of the middle lower part of the detection bracket, and the driving mechanism (13) is arranged on the inner side of the middle upper part of the detection bracket; in the pile hole bottom sediment thickness detection process, the detection component (14) stretches out the detection support (12) through the cooperation of actuating mechanism (13) under control system (1) and detects.

7. The detector for rotary drilling pile hole forming quality according to claim 6, wherein: the detection support (12) comprises a detection cylinder (15) and at least two groups of adjustable limiting rods, the driving mechanism (13) is arranged at the middle upper part in the detection cylinder (15), the detection assembly (14) is arranged at the middle lower part in the detection cylinder (15), the free end of the signal wire (6) is connected with the top of the detection cylinder (15), and the position of the detection system (3) is limited by the group of adjustable limiting rods which are all arranged along the circumferential direction in the lifting process of the signal wire (6) in the pile hole.

8. The detector for rotary drilling pile hole forming quality according to claim 7, wherein: the control system (1) is a detection host, the driving mechanism (13) is a servo motor with a control end connected with the detection host, each group of adjustable limiting rods comprises an inner threaded pipe (16), a connecting rod (17), a spring (18) and an arc-shaped plate (20) with a mounting rod (19), one end part of the connecting rod (17) is provided with a mounting hole (21) extending along the axial direction, one end of the connecting rod (17) through which the mounting hole (21) is not arranged is connected in the inner threaded pipe (16) in a telescopic screwing way, and the arc-shaped plate (20) is arranged on one end of the connecting rod (17) extending out of the inner threaded pipe (16) in a telescopic way along the axial direction under the cooperation of the spring (18) and the mounting hole (21) through the mounting rod (19); the adjustable limiting rods are uniformly distributed on the detection cylinder (15) along the circumferential direction through the internal thread pipe (16).

9. The detector for rotary drilling pile hole forming quality according to claim 8, wherein: the detection assembly (14) comprises a pointed cone (22), a pressure sensor (23) and an installation piece set, wherein the pointed cone (22) is arranged at the lower end of the installation piece set through the pressure sensor (23), and the installation piece set is connected with the power output end of the servo motor through the upper end of the installation piece set along the vertical telescopic direction.

10. The detector for rotary drilling pile hole forming quality according to claim 9, wherein: the mounting assembly comprises a mounting plate (24), a guide rod (25), a sliding plate (26), a screw rod (27), a fixing rod (28) and a mounting plate (29), wherein threaded holes and guide holes are formed in the sliding plate (26), a servo motor is fixedly arranged at the upper part in the detection cylinder (15) through the mounting plate (24), the screw rod (27) is fixedly connected with a power output end of the servo motor, which extends out of the mounting plate (24), the upper end of the guide rod (25) penetrating through the guide hole is fixedly connected with the mounting plate (24), the mounting plate (29) is fixedly connected with the sliding plate (26) through the fixing rod (28), a pressure sensor (23) is arranged at one end, where the fixing rod (28) is not arranged, of the sliding plate (26) and the threaded holes are driven by driving force output by the servo motor to lift in the vertical direction;

a chassis (30) is also arranged outside the open lower end of the detection cylinder (15).