Efficient building wall flatness detection instrument

Abstract

The invention relates to the technical field of detection instruments, in particular to an efficient building wall flatness detection instrument which comprises a supporting mechanism, an axial drive, a radial drive, a testing mechanism and a rotary drive. The moving part is used for driving the base to move to a preset position to complete fixing operation; the axial driver comprises a fixing frame, a fixing plate, an axial motor, an axial lead screw, a mounting seat and a guide rod; the test mechanism comprises a connecting arm, a substrate and a test piece; the test piece comprises a test rod, a test plate, a pressure sensor and an indication structure; the two sides of the substrate can be connected with a preset number of test pieces through connecting pieces so as to complete the test work with different length requirements. And the rotary drive is used for completing switching between an axial movement detection state and a radial movement detection state of the building wall plane. According to the invention, on the basis of detection of the coverage area of wall surfaces with different widths, the purpose of reasonably rotating and adjusting the test direction according to the wall surface distribution can be realized; the cost performance is high, and the practicability is higher.

Description

Technical Field

[0001] The invention relates to the technical field of building wall surface detection, and in particular to a high-efficiency building wall flatness detection instrument. Background Art

[0002] The flatness of a building wall refers to the vertical and horizontal deviations between the wall surface and the reference plane. The flatness of a building wall affects the visual effect and living comfort. At the same time, high flatness can avoid wall defects such as cracks and unevenness, reducing inconvenience to residents. However, the existing building wall flatness detection equipment generally uses tools such as level meters and rulers for manual measurement, which has low accuracy, poor efficiency, high cost, and poor use effect.

[0003] A search of the disclosed prior art shows that "CN 118442909 B, a plane measuring instrument for the flatness of building walls" records "it relates to the field of building measurement technology, and in particular to a plane measuring instrument for the flatness of building walls. It comprises a movable frame, the upper side surface of the movable frame is rotatably connected to an adjusting frame, the adjusting frame is fixedly connected to a symmetrically distributed electric slide rail on a side away from the movable frame, the electric slide rail is provided with a slider, the symmetrically distributed sliders are commonly fixedly connected to a fixed frame, the upper side surface of the fixed frame is fixedly connected to a lifting frame, the adjusting frame is fixedly connected to the symmetrically distributed first electric push rods, the telescopic ends of the first electric push rods are rotatably connected to connecting sleeves, and the symmetrically distributed connecting sleeves are all fixedly connected to L-shaped plates. The present invention drives the adjacent L-shaped plates to move by the first electric push rods, so that the L-shaped plates are squeezed against the wall surface adjacent to the wall surface to be measured, so that the L-shaped plates drive the adjusting frame to rotate through the first electric push rod, and finally the direction of the U-shaped frame is parallel to the reference direction of the wall surface."

[0004] However, the above-mentioned plane measuring instrument of the prior art still has the following disadvantages: First, the above-mentioned plane measuring instrument of the prior art has defects; in the actual wall flatness detection operation, the wall often has cement block particles or paint agglomerates caused by construction problems. These particle points are discretely distributed. If they are not cleaned, deviations will occur, which seriously affects the measurement accuracy of the wall flatness. The traditional method is to clean them manually, which is time-consuming and labor-intensive. Second, the structure of the plane measuring instrument of the prior art is relatively complex and the manufacturing cost is high. Furthermore, the plane measuring instrument of the prior art can only detect the coverage area of ​​the building wall under a single width, while the width of the indoor wall plane of the building is different, and the use effect is not good. Moreover, for the wall under the balcony with windows, its height is lower than the depth of the wall. The plane measuring instrument of the prior art can still only perform a single axial (vertical) mobile detection, and the position change is relatively frequent. That is, the plane measuring instrument of the prior art cannot realize the detection of the coverage area of ​​different wall widths, and can also realize the reasonable rotation and adjustment of the test direction according to the wall distribution, while taking into account the free switching detection operation of the axial and radial directions of the building wall plane. Third, the marking structure of the plane measuring instrument in the prior art for detecting abnormal plane conditions on the building wall is relatively complex, the design is not reasonable, the manufacturing cost is high, the assembly is complicated, it is very inconvenient for maintenance, and the replacement is time-consuming and labor-intensive, which restricts the efficiency of the building wall flatness detection operation. Summary of the invention

[0005] In order to solve the above-mentioned shortcomings and deficiencies in the use of the existing plane measuring instruments, the present invention provides a high-efficiency building wall flatness detection instrument with reasonable structural design, which is convenient for automatic pre-cleaning of blocky particle points to ensure the smoothness of the wall foundation, can realize the detection of coverage areas of different wall widths, and can also reasonably rotate and adjust the test direction according to the wall distribution, while taking into account the free switching detection operations of the axial and radial directions of the building wall plane, simple abnormal identification, high cost performance, and improved building wall plane detection efficiency.

[0006] The present invention adopts the following technical solutions to achieve the above purpose: An efficient building wall flatness detection instrument, comprising a support mechanism, an axial drive, a radial drive, a test mechanism and a rotary drive; the support mechanism comprises a base and a moving part, the base is distributed on the left and right, the moving part is used to drive the base to move to a preset position and then complete the fixing operation; the axial drive is used to drive the test mechanism to move up and down; the radial drive is used to drive the test mechanism to move forward and backward; The test mechanism comprises a connecting arm, a base plate and a test piece; the connecting arm is distributed front and back, and one end is connected to the mounting seat and the other end is connected to the base plate, and the base plate is distributed left and right; the test pieces are evenly distributed in multiple groups, and are all arranged on the base plate; each group of the test pieces comprises a test rod, a test plate, a pressure sensor and an indication structure; one end of the test rod is connected to the base plate, and the other end is connected to the test plate; the indication structure is used to trigger the start of the completion indication operation when the pressure sensor detects a plane abnormality; an LED control panel is also provided on the base plate, and the LED control panel is connected to multiple pressure sensors and has the functions of data storage, calling and viewing, and one-key clearing; the two sides of the base plate can also be connected to a preset number of the test pieces as a whole by setting a connecting piece to complete the test operation with different length requirements; the rotary drive is used to drive the connecting arm to perform a 90-degree rotary motion to complete the switching between the axial movement detection state and the radial movement detection state of the building wall plane; The grinding mechanism includes a grinding frame, a grinding shaft, a grinding disc and a grinding motor; the grinding frame is installed on the base plate in a left-right distribution, and the cross-section is an L-shaped structure; the grinding shaft is rotatably arranged on the grinding frame, the grinding disc is sleeved and installed on the grinding shaft, and a frosting layer is arranged on the grinding disc, and the frosting layer of the grinding disc is kept in contact with the wall surface in the working state; the grinding motor is fixedly installed on the grinding frame through a bracket, and the output shaft is connected to the grinding shaft.

[0007] As a preferred technical solution: the moving part includes a universal wheel and a support leg; the universal wheel is arranged on the base through a bracket, and the support leg is arranged on the base and is located on one side of the universal wheel; the support leg includes an electric hydraulic lifting rod and a support foot; one end of the electric hydraulic lifting rod is arranged on the base, and the other end is connected to the support foot; one end of the electric hydraulic lifting rod is also connected to a control switch, and the control switch is fixed to the base by screws.

[0008] A further preferred technical solution: the LED control panel has a built-in controller, and the controller includes a data acquisition unit, a data processing unit, an image display unit and a data storage unit; the data acquisition unit is used to connect and receive real-time signal detection data of the pressure sensor; the data processing unit is used to receive the pressure detection signal of the data acquisition unit, and convert the pressure detection signal into an X / Y / Z parameter signal in a three-dimensional coordinate system through pressure-displacement conversion analysis and processing technology; the image display unit is used to receive the X, Y, and Z coordinate parameter information in the three-dimensional coordinate system, and establish three-dimensional space trajectory simulation information, thereby intuitively displaying the wall simulation in a three-dimensional state, and displaying the wall flatness through a green trajectory in the simulated wall image. Normal state; abnormal wall flatness detection is displayed through a red track; the data storage unit is responsible for storing and managing all relevant information of the detection instrument and displaying it in the form of a form, where the information of the detection instrument includes the device name, sensor type, description, pressure detection information, coding label information, three-dimensional coordinate value information, and editing thereof; it also includes the management of addition, deletion and modification of information, and supports search functions. At the same time, a wall flatness detection management database is constructed, and data is stored through encryption technology; the data storage unit is also connected to a cloud background terminal, and the detection data can be transmitted to the cloud background terminal in real time through 5G network transmission protocol technology. The cloud background terminal can search, view and issue recommended commands for data.

[0009] A further preferred technical solution: the axial drive includes a fixing frame, a fixing plate, an axial motor, an axial screw, a mounting seat, and a guide rod; the fixing frame is a rectangular structure and is vertically mounted on the base, the fixing plate is arranged at the lower part of the fixing frame, and the axial motor is fixedly mounted on the fixing plate through a bracket; the axial screw and the guide rod are both vertically arranged between the top surface of the fixing frame and the fixing plate, and the axial screw is connected to the axial motor, and the guide rods are two symmetrically distributed on the left and right; the mounting seat passes through the axial screw and the guide rod, and maintains a threaded connection with the axial screw, and is connected to the fixing plate. The guide rods are maintained in sliding connection; the radial drive includes a radial motor, a side wing plate, a radial screw, a slide rail, a slider and a moving block; the radial motor is fixedly installed on the base through a bracket, and the side wing plates are two distributed front and back, and both are arranged on the base; the radial screw is rotatably arranged between the two side wing plates, and one end is maintained in connection with the radial motor; the slide rail is arranged on the base, and there are two symmetrically distributed on the left and right; the slider is arranged on the fixed frame, and is matched with the slide rail; the moving block is arranged in the middle of the lower end surface of the fixed frame, and is threadedly connected with the radial screw.

[0010] A further preferred technical solution is as follows: a scale line extending forward and backward is provided on the upper end surface of the base and on one side of the slide rail, and an indication point for correspondingly observing the moving scale distance is provided in the middle of the slide block.

[0011] A further preferred technical solution: a reinforcing rib is provided between the base plate and the connecting arm; one side of the test plate is a flat surface and the other side is an arc-shaped surface; the pressure sensor is arranged at a protrusion of the arc-shaped surface.

[0012] A further preferred technical solution: the indicating structure includes a micro liquid pump and a nozzle; the inner cavity of the test board is provided with a liquid storage chamber, and the liquid storage chamber is filled with pigment liquid; the micro liquid pump is arranged in the liquid storage chamber, one end of the nozzle is connected to the micro liquid pump and the other end extends to the outside of the test board, and the nozzle is located below the pressure sensor; the micro liquid pump maintains a signal connection with the pressure sensor.

[0013] A further preferred technical solution: the connecting piece includes a fixing column, a connecting protrusion, a cable connector and a cable jack; the cross-section of the fixing column is the same as the cross-section of the substrate, and the fixing column is connected to the test rod; a connecting groove is provided at one end of the fixing column, and the connecting protrusion is provided at the other end, and the connecting protrusion of the fixing column is matched and installed with the connecting groove of the adjacent fixing column; the cable connector is arranged on the connecting protrusion and is kept connected with the pressure sensor; the cable jack is arranged on the connecting groove and is kept matched and installed with the cable connector; a group of connecting pieces and a group of test pieces constitute an additional test unit.

[0014] A further preferred technical solution: connection grooves are provided at both ends of the substrate, and the connection grooves of the substrate are also provided with cable jacks, and the cable jacks therein are electrically connected to the LED control panel; the connection grooves of the substrate are matched and installed with the corresponding connection protrusions connected to the fixing columns, and the cable jacks of the substrate are matched and installed with the corresponding cable connectors connected to the fixing columns.

[0015] A further preferred technical solution: the rotary drive includes a rotary motor, a main gear, a sub-gear and a toothed belt; the rotary motor is fixedly mounted on the mounting seat through a bracket, the main gear is sleeved on the output shaft of the rotary motor, the sub-gear is sleeved on the connecting arm, and the toothed belt is arranged between the main gear and the sub-gear.

[0016] Compared with the prior art, the invention has the following beneficial effects: the invention has reasonable structural design and strong practicality, and can use a smaller measuring structure to conveniently realize the efficient building wall flatness detection demand; the whole structure is simple to assemble, which saves structural space, and can compress the parts by more than 30% compared with the traditional plane detector; a test board with a detection + trigger identification integrated structure is adopted, and a threshold warning is set for the pressure sensor, and when an abnormality is detected, a micro liquid pump is triggered to start for identification spraying, the structural design is reasonable, and it is convenient for replacement and maintenance operations, the abnormal identification is simple, the cost performance is high, the manufacturing process is simplified and intelligent, and the dynamic balance of the structure is improved; by setting the cooperation of the electric hydraulic lifting rod and the supporting foot, it is easy to move, especially in the plane detection operation of the radial building wall, the movement is stable, and the stability in the working state is enhanced; the invention further adopts the cooperation of axial drive, radial drive and rotary drive, and on the basis of realizing the flatness detection of the wall coverage area with different widths, it can also realize the reasonable rotation adjustment of the test direction according to the length and width distribution of the wall, and at the same time take into account the purpose of the free switching detection operation of the axial and radial directions of the building wall plane; the efficiency of the building wall plane detection is improved, and it can adapt to the different detection requirements of various scenes of the building wall, so it has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The overall structure of the present invention is three-dimensional Figure 1 ; Figure 2 The overall structure of the present invention is three-dimensional Figure 2 ; Figure 3 It is a front view of the overall structure of the present invention in a fixed state; Figure 4 It is a side view of the overall structure of the present invention in a moving state; Figure 5 It is a schematic diagram of the structure of the radial drive of the present invention; Figure 6 A three-dimensional diagram of the axial drive of the present invention; Figure 7 is a three-dimensional enlarged view of the testing mechanism of the present invention; Figure 8 is a three-dimensional diagram of the composition structure of the additional test unit of the present invention; Fig. 9It is a structural cross-sectional view of the connecting piece of the present invention; Fig.10 It is a cross-sectional structural diagram of the side view plate of the present invention; Fig.11 The figure is a flow chart of the control principle of the LED control panel of the present invention.

[0019] In the figure: 1. Support mechanism; 11. Base; 12. Moving part; 121. Universal wheel; 122. Support leg; 123. Electric hydraulic lifting rod; 124. Support foot; 125. Control switch; 2. Axial drive; 21. Fixed frame; 22. Fixed plate; 23. Axial motor; 24. Axial screw; 25. Mounting seat; 26. Guide rod; 3. Radial drive; 31. Radial motor; 32. Side wing plate; 33. Radial screw; 34. Slide rail; 35. Slider; 36. Moving block; 37. Scale line; 38. Indication point; 4. Test mechanism; 41. Connecting arm; 42. Base plate; 43. Test piece; 431. Test rod; 432. Test plate; 433. Pressure sensor; 434. Indication structure; 435. Vertical surface; 436, curved surface; 437, micro liquid pump; 438, nozzle; 439, liquid storage chamber; 44, LED control panel; 45, reinforcing ribs; 46, controller; 461, data acquisition unit; 462, data processing unit; 463, image display unit; 464, data storage unit; 47, cloud background terminal; 5, rotary drive; 51, rotary motor; 52, main gear; 53, sub gear; 54, toothed belt; 6, connector; 61, fixing column; 62, connecting protrusion; 63, cable connector; 64, cable jack; 65, connecting groove; 66, additional test unit; 7, grinding mechanism; 71, grinding frame; 72, grinding shaft; 73, grinding disc; 74, grinding motor; 75, frosting layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the specific implementation of the present invention, the terms such as "first" and "second" and other relational terms that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms such as "include", "comprise" or any other variants thereof that may appear are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the possible appearance of the sentence "including a ..." and other defined elements does not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "provided with" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] Example 1: Figures 1 to 11 As shown: An efficient building wall flatness detection instrument comprises a support mechanism 1, an axial drive 2, a radial drive 3, a test mechanism 4 and a rotary drive 5. The present invention has a reasonable structural design and strong practicability. It can use a smaller measuring structure to conveniently achieve efficient building wall flatness detection requirements; the entire structure is simple to assemble, saving structural space, and can compress components by more than 30% compared to traditional plane detectors. The support mechanism 1 comprises a base 11 and a moving part 12, the base 11 is distributed on the left and right, and the moving part 12 is used to drive the base 11 to move to a preset position and then complete the fixing operation. Such a configuration facilitates the detection operation state of position movement and enhances the stability in the fixed position state.

[0024] like Figure 1 and Figure 6As shown: wherein, the axial drive 2 comprises a fixing frame 21, a fixing plate 22, an axial motor 23, an axial screw 24, a mounting seat 25, and a guide rod 26. The fixing frame 21 is a rectangular structure and is vertically distributed and installed on the base 11, and the bottom end of the fixing frame can be connected and fixed to the base by welding. The fixing plate 22 is arranged at the lower part of the fixing frame 21, and the fixing plate is distributed on the left and right, and is welded and fixed to the fixing frame. The axial motor 23 is fixedly installed on the fixing plate 22 through a bracket; the axial motor adopts a servo control motor. The axial motor can also be arranged on the lower wall of the fixing frame, and the axial screw penetrates through the fixing plate and extends upward. The axial screw 24 and the guide rod 26 are both vertically distributed and arranged between the top surface of the fixing frame 21 and the fixing plate 22, and the axial screw 24 is connected to the axial motor 23. The connection between the axial screw 24 and the upper end surface of the fixing frame 21 and the fixing plate 22 is provided with bearings to ensure a good rotation effect. The guide rods 26 are two symmetrically distributed on the left and right; the guide rods are located on both sides of the axial screw. The mounting seat 25 passes through the axial screw rod 24 and the guide rod 26, and maintains a threaded connection with the axial screw rod 24, and maintains a sliding connection with the guide rod 26; with such a configuration, when the axial motor 23 is started, it will drive the mounting seat 25 to move up and down. A simple "screw nut structure" is formed between the axial screw rod 24 and the mounting seat 25. For specific analysis, taking the forward start of the axial motor 23 as an example, the axial motor 23 will drive the axial screw rod 24 to rotate synchronously clockwise, and with the assistance of the guide rod and the guide sliding of the mounting seat, the mounting seat 25 will move up with the rotation of the axial screw rod, that is, drive the mounting seat 25 and other overall structures to perform a lifting operation, and begin to complete the plane detection operation of the building wall from bottom to top.

[0025] like Figure 1 and Figure 5As shown: In this embodiment, the radial drive 3 is used to drive the fixed frame 21 to move forward and backward; a preferred technical solution, the radial drive 3 includes a radial motor 31, a side wing plate 32, a radial screw 33, a slide rail 34, a slider 35 and a moving block 36. The radial motor 31 is fixedly installed on the base 11 through a bracket, and the radial motor also adopts a servo control motor. The side wing plates 32 are two distributed front and back, and are both arranged on the base 11; the two can be fixed by welding. The radial screw 33 is rotatably arranged between the two side wing plates 32, and one end is connected to the radial motor 31; a bearing is also arranged between the radial screw and the side wing plate. The slide rail 34 is arranged on the base 11, and is two symmetrically distributed on the left and right; the slide rail is fixed on the base by screws. The slider 35 is arranged on the fixed frame 21, and is matched with the slide rail 34; the fixed frame moves forward and backward along the slide rail through the slider, that is, it is close to the building wall or away from the wall. The moving block 36 is arranged at the middle of the lower end surface of the fixing frame 21 and is threadedly connected with the radial screw 33. The moving block and the fixing frame can be fixed by welding. A screw nut structure is formed between the moving block 36 and the radial screw 33. A scale line 37 extending forward and backward is also provided on the upper end surface of the base 11 and on one side of the slide rail 34, and an indication point 38 for correspondingly observing the moving scale distance is provided in the middle of the slider 35. Such an arrangement facilitates the staff to intuitively and clearly view and control the moving distance of the fixing frame through the indication relationship between the indication point and the scale line.

[0026] With such a configuration, when the radial motor 31 is started, it will drive the moving block 36 to move forward and backward. In the initial state, the staff assembles the test piece, and at this time, there is a distance from the building wall. When the radial motor 31 starts to rotate forward, the radial motor 31 drives the radial screw 33 to rotate synchronously clockwise. The radial screw 33 and the moving block are in a threaded rotation relationship, and the moving block 36 and the fixed frame 21 are a fixed integrated structure. In addition, under the auxiliary guiding cooperation of the slide rail and the slider, the clockwise rotation of the radial screw 33 will drive the moving block and the fixed frame to move backward as a whole, that is, move in the direction of the building wall, until the test board approaches and contacts the building wall. When the flatness detection operation of this part of the building wall is completed, the radial motor 31 starts to reverse, and the radial motor 31 will drive the radial screw 33 to rotate synchronously counterclockwise, and then drive the moving block 36 and the fixed frame 21 The overall structure is reset, that is, the test board is away from the building wall.

[0027] like Figure 2 and Figure 7As shown: In this embodiment, the test mechanism 4 includes a connecting arm 41, a base plate 42 and a test piece 43. The connecting arm 41 is distributed front and back, and one end is connected to the mounting seat 25 and the other end is connected to the base plate 42. The base plate 42 is distributed left and right; reinforcing ribs 45 are also provided between the base plate 42 and the connecting arm 41. This arrangement is used to enhance stability. Although in practice, the number of test pieces and additional test units used will be selected according to the distribution of the length and height of the building wall, it is still necessary to enhance the stability of the base plate installation. In actual testing operations, the overall weight of the test piece can be 50-100g, the structural design is reasonable, and the space utilization rate is high. On the basis of ensuring efficient building wall flatness detection operations, it is easy to adjust the single coverage area, and it is more practical.

[0028] like Figure 7 As shown: wherein the test pieces 43 are evenly distributed in multiple groups, and are all arranged on the substrate 42. Each group of the test pieces 43 includes a test rod 431, a test plate 432, a pressure sensor 433 and an indication structure 434. One end of the test rod 431 is connected to the substrate 42, and the other end is connected to the test plate 432. Wherein, the test rod 431 and the substrate 42 can be fixed by bolt connection, which is convenient for replacing and installing the main structure of the test plate and maintenance operations. Even if the test unit (test plate) is broken and discarded, the cost can still be lower, avoiding the problem of high overall replacement cost of most traditional test structures, and the cost performance is higher. One side of the test plate 432 is a vertical surface 435 and the other side is an arc surface 436; the test plate is vertically distributed, and the arc surface is mainly used for contact and extrusion with the building wall. The pressure sensor 433 is arranged at the protrusion of the arc surface 436; specifically, through the embedded card slot structure, the pressure sensor has its own protective shell, which is convenient for providing good extrusion contact and sliding effect in the operation of moving the flatness of the building wall test. In the initial state, the staff sets a threshold warning for the pressure sensor. Exceeding or falling below the threshold value indicates that the wall surface is abnormally uneven. For example, in the initial state, the staff sets the threshold value of the pressure sensor to 9.9-10.1N. Specifically, the fixing frame and the test plate are driven by radial drive to move toward the building wall as a whole, so that in the initial state, the pressure sensor of the test plate squeezes the wall surface, and the pressure value of the pressure sensor on the LED control panel is set to 10N. That is, the fluctuation of the pressure value of plus or minus 0.1N belongs to the normal range of flatness consistency. When the flatness of the building wall is abnormal, the bulge of the wall will cause the pressure sensor detection value to increase (because the initial setting of the contact pressure value between the test plate and the flat building wall surface is constant). The pits on the wall will cause the pressure sensor detection value to decrease, so that the flatness detection operation of the building wall can be carried out conveniently and efficiently, which improves the intelligence level of the building wall flatness detection instrument.

[0029] like Figure 8 and Fig.10 As shown: In this embodiment, the indication structure 434 is used to trigger the start of the completion indication operation when the pressure sensor 433 detects a plane abnormality. In a preferred technical solution, as Fig.10 As shown: the indicating structure 434 includes a micro liquid pump 437 and a nozzle 438. The inner cavity of the test board 432 is provided with a liquid storage chamber 439, and the inner cavity of the test board is a hollow structure used for liquid storage. The upper part of the liquid storage chamber can be connected to an infusion tube, which is connected to an external liquid source for replenishing liquid. The structural design is compact and the space utilization rate is high. The liquid storage chamber 439 is filled with pigment liquid; the pigment liquid can be pigments of different colors, which are classified and used according to the composition structure of the actual building wall. The micro liquid pump 437 is arranged in the liquid storage chamber 439, one end of the nozzle 438 is connected to the micro liquid pump 437, and the other end extends to the outside of the test board 432, and the nozzle 438 is located below the pressure sensor 433; the micro liquid pump 437 maintains a signal connection with the pressure sensor 433. The outer end of the nozzle can also be connected to a nozzle. In this embodiment, a battery can be arranged in the substrate to meet the detection needs of the instrument. The pressure sensor is initially set with a threshold. Any value exceeding or falling below the threshold will be recorded as an abnormality by the LED control panel. At the same time, the pressure sensor acts as a trigger starting element to transmit the abnormal trigger signal to the micro liquid pump, which starts and begins to spray indicator marks on the abnormal building wall, making it easier for staff to check the data and wall indications later, thereby meeting the needs of efficient building wall flatness detection.

[0030] like Figure 7 As shown: In this embodiment, an LED control panel 44 is also provided on the substrate 42, and the LED control panel 44 is connected to a plurality of pressure sensors 433, and has the functions of data storage, calling, viewing, one-key clearing and three-dimensional forming display. In a preferred solution, as Fig.11As shown: the LED control panel 44 has a built-in controller 46, and the controller 46 includes a data acquisition unit 461, a data processing unit 462, an image display unit 463 and a data storage unit 464; the data acquisition unit 461 is used to connect and receive real-time signal detection data of the pressure sensor; the data processing unit 462 is used to receive the pressure detection signal of the data acquisition unit, and convert the pressure detection signal into the X / Y / Z parameter signal in the three-dimensional coordinate system through the pressure-displacement conversion analysis and processing technology. The image display unit 463 is used to receive the coordinate parameter information of X, Y, and Z in the three-dimensional coordinate system, and establish three-dimensional space trajectory simulation information, thereby intuitively displaying the wall simulation in the three-dimensional state, and displaying the normal state of the wall flatness through the green trajectory in the simulated wall image; and displaying the abnormality of the wall flatness detection through the red trajectory. The data storage unit 464 is responsible for storing and managing all relevant information of the detection instrument, and displaying it in the form of a form, wherein the information of the detection instrument includes the device name, sensor type, description, pressure detection information, coding label information, three-dimensional coordinate value information, and editing thereof; it also includes the management of adding, deleting and modifying information, and supports the search function, while building a wall flatness detection management database, and storing data through encryption technology. The data storage unit 464 can also transmit the detection data to the cloud background terminal 47 in real time through the 5G network transmission protocol technology, and the administrator of the cloud background terminal 47 can search, view and issue the recommended command for the data. In this way, by optimizing and upgrading the detection system of the detection instrument, and converting the pressure signal into an XYZ parameter signal in a three-dimensional coordinate system, the wall simulation is intuitively displayed through three-dimensional imaging technology, and the wall situation under the abnormal trajectory is marked, and it is intuitively displayed on the LED display screen, which is convenient for on-site users and remote users or administrators to view and feedback the execution command.

[0031] Take the object naming of the management database as an example. There are three top-level objects in the object naming tree, namely ISO, ITU-T and the union of these two organizations. There are four nodes under ISO, one of which (labeled 3) is the organization being identified. Below it is a DOD (Department of Defense) subtree (labeled 6), and below that is the Internet (labeled 1). When only discussing objects in the Internet, you can only draw the subtree below the Internet and mark {1.3.6.1} next to the Internet node. The second node under the Internet node is eget (labeled 2). Below that is the management database.

[0032] Data encryption technology; For general data requests, the system provides standard URL format requests, as follows: <HTTP_METHOD> / api / <APP_NAME> / <controller> / HTTP / 1.1, at the same time, to ensure the security of user passwords, data encryption is used for verification, encrypted in HTTP request information, and verified on the server side. Identify the keyword "crypt" in the request policy. The encryption request should follow the following format requirements: GET / api / ?app_id=<APP_NAME> &enc_request={encrypted_request}HTTP / 1.1 Encrypted in Json data format Base64 encoding MCRYPT_RIJNDAEL_256 encryption algorithm, request format As follows: urlencode(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256,{app_key}, json_encode($request_params) ,MCRYPT_MODE_ECB))); Data encryption process: 1. Send Json data request through ($_GET) parameter; 2. Perform MCRYPT_RIJNDAEL_256 encryption calculation on Json data request; 3. Verify the encrypted parameters through base64 encoding to ensure HTML character encryption; Get the encrypted parameters through request ID.

[0033] The two sides of the substrate 42 can also be connected to a preset number of the test pieces 43 as a whole by setting connecting pieces 6 to complete the test operations with different length requirements. In a preferred technical solution, as Fig. 9 As shown in FIG. 1 , the connecting member 6 includes a fixing column 61, a connecting protrusion 62, a cable connector 63 and a cable jack 64. The cross section of the fixing column 61 is the same as that of the base plate 42, and the fixing column 61 is connected to the test rod 431; Figure 8 and Fig. 9 As shown: a connection groove 65 is provided at one end of the fixing column 61, and a connection protrusion 62 is provided at the other end, and the connection protrusion 62 of the fixing column 61 is matched and installed with the connection groove 65 of the adjacent fixing column 61. The cable connector 63 is arranged on the connection protrusion 62 and is connected to the pressure sensor 433; the cable jack 64 is arranged on the connection groove 65 and is matched and installed with the cable connector 63; the purpose of connecting the cable connector and the cable jack is to realize data transmission between the pressure sensor and the LED control panel, and at the same time, it can also realize basic power supply requirements. Preferably, a fastening bolt can also be provided between the connection protrusion and the connection groove, and the fastening bolt is vertically distributed and passes through a side wall of the corresponding connection groove at the fixing column or the substrate and is fastened to the connection protrusion. A group of connectors 6 and a group of test pieces 43 constitute an additional test unit 66, refer to Figure 8 In actual building wall inspection operations, different numbers of additional test units connected can be selected according to the length and width distribution of the building wall to form the most reasonable and efficient single plane inspection operation, thereby improving the efficiency of building wall flatness inspection to a certain extent.

[0034] like Figure 7 and Fig. 9 As shown: In this embodiment, both ends of the substrate 42 are provided with connection grooves 65, and the connection grooves 65 of the substrate 42 are also provided with cable jacks 64, and the cable jacks 64 here are electrically connected to the LED control panel 44; the purpose of such a setting is to facilitate the connection of additional test units to adapt to the operation scenarios of different building wall width detection. The connection grooves 65 of the substrate 42 are matched and installed with the corresponding connection protrusions 62 connected to the fixing columns 61, and the cable jacks 64 of the substrate 42 are matched and installed with the corresponding cable connectors 63 connected to the fixing columns 61. Such a setting also ensures basic data communication functions and power supply requirements.

[0035] like Figure 7 As shown: In this embodiment, the rotary drive 5 is used to drive the connecting arm 41 to perform a 90-degree rotary motion to complete the switching between the axial movement detection state and the radial movement detection state of the building wall plane. In a preferred technical solution, the rotary drive 5 includes a rotary motor 51, a main gear 52, a sub-gear 53 and a toothed belt 54. The rotary motor 51 is fixedly mounted on the mounting seat 25 through a bracket, and the rotary motor also adopts a servo control motor. The main gear 52 is sleeved and installed on the output shaft of the rotary motor 51, the sub-gear 53 is sleeved and installed on the connecting arm 41, and the toothed belt 54 is arranged between the main gear 52 and the sub-gear 53. With such a setting, in the initial state, the detection instrument adopts the axial detection state, and in this state, the substrate 42 is distributed left and right. When the flatness detection of the building wall requires the radial detection state to meet and improve the detection efficiency, the staff starts the rotary motor. The forward rotation of the rotary motor will drive the main gear to rotate clockwise, and then drive the auxiliary gear and the connecting arm to rotate 90 degrees as a whole through the transmission effect of the toothed belt. In this state, the base plate 42 is distributed up and down. In this embodiment, in order to better achieve accurate 90-degree rotation. A limit rod can also be set on the connecting arm, and a limit plate can be set on the base plate. The two limit plates are distributed at an angle of 90 degrees, so that the auxiliary stroke limit is achieved through the cooperation of the limit rod and the limit plates at different positions.

[0036] like Figure 1 As shown: In this embodiment, the grinding mechanism 7 includes a grinding frame 71, a grinding shaft 72, a grinding disc 73 and a grinding motor 74. The grinding frame 71 is installed on the base plate 42 in a left-right distribution, and the cross section is an L-shaped structure; the grinding frame and the base plate can be fixed by bolt connection. The grinding shaft 72 is rotatably arranged on the grinding frame 71, and a bearing can be arranged at the connection between the two to ensure stable rotation. The grinding disc 73 is sleeved and installed on the grinding shaft 72, and a frosted layer 75 is arranged on the grinding disc 73, and the frosted layer 75 is kept in contact with the wall surface in the working state; that is, in the initial state, the outer convex point of the frosted surface of the grinding disc and the highest point of the arc of the test plate maintain the same vertical plane. The grinding motor 74 is fixedly installed on the grinding frame 71 through a bracket, and the output shaft is connected to the grinding shaft 72. With this setting, when it is necessary to inspect the wall, the grinding motor is turned on first, and the grinding motor drives the grinding shaft and the grinding disc to start rotating at high speed. In the initial state, the grinding disc is in contact with the wall. In this way, the grinding disc will first grind the protruding cement or paint particles on the wall during the rising process, clean the wall, and automatically clean the block particles in advance to ensure the smoothness of the wall foundation, which provides favorable conditions for the subsequent test board and pressure sensor to detect the flatness of the wall, avoids deviations, and ensures the measurement accuracy of the wall flatness.

[0037] Example 2: Figure 3 and Figure 4 As shown: On the basis of Example 1, a high-efficiency building wall flatness detection instrument also includes: the moving part 12 includes a universal wheel 121 and a support leg 122. The universal wheel 121 is set on the base 11 through a bracket. This universal wheel serves as the basis for movement. It is also a key movement design of the seat in the radial detection state of the detection instrument, which saves time and effort. The support leg 122 is set on the base 11 and is located on one side of the universal wheel 121; the support leg 122 is retractable. Specifically, the support leg 122 includes an electric hydraulic lifting rod 123 and a support foot 124. One end of the electric hydraulic lifting rod 123 is set on the base 11 by bolts, and the other end is connected to the support foot 124 by bolts. One end of the electric hydraulic lifting rod 123 is also connected to the control switch 125, and the control switch 125 is fixed to the base 11 by screws. With such a configuration, Figure 4 As shown: when the detection instrument needs to be moved, the electric hydraulic lifting rod 123 is activated by controlling the switch 125 to retract, so that the overall height of the support leg 122 is lower than the universal wheel 121. At this time, the universal wheel 121 contacts the ground and the support leg 122 is off the ground. Figure 3 As shown: when the detection instrument needs to be fixed, the electric hydraulic lifting rod is extended by controlling the switch so that the overall height of the supporting leg is higher than the universal wheel. At this time, the universal wheel 121 is off the ground and the supporting leg 122 is in contact with the ground.

[0038] Working principle: In the initial state, the staff selects different numbers of additional test units 66 connected according to the length and width distribution of the building wall to form the most reasonable and efficient single plane detection operation. Take the axial detection state as an example: the staff initially sets the threshold value of the pressure sensor 433 through the LED control panel 44. Specifically, it is controlled by the radial motor 31. When the radial motor 31 starts to rotate forward, the radial motor 31 drives the radial screw 33 to rotate synchronously clockwise. The radial screw 33 and the moving block are in a threaded rotation relationship. The moving block 36 and the fixed frame 21 are a fixed integrated structure. In addition, under the auxiliary guiding cooperation of the slide rail 34 and the slider 35, the clockwise rotation of the radial screw 33 will drive the moving block and the fixed frame to move backward as a whole, that is, move in the direction of the building wall until the test plate 432 approaches and contacts the building wall. At the same time, the pressure sensor 433 is squeezed by the wall, and the value is displayed in real time on the LED control panel 44 until the detection value of the pressure sensor 433 reaches the set threshold, and the radial motor 31 stops. It can also be operated according to the indication of the scale line.

[0039] When it is necessary to inspect the wall, first turn on the grinding motor 74, and the grinding motor 74 drives the grinding shaft 72 and the grinding disc 73 to start high-speed rotation. In this way, the grinding disc will first grind the protruding cement or paint particles on the wall during the rising process, clean the wall, and realize the effect of automatically cleaning the block particles in advance to ensure the smoothness of the wall foundation. Next, the staff starts the axial motor 23, and the axial motor 23 starts in forward rotation. The axial motor 23 will drive the axial screw 24 to rotate synchronously clockwise. With the assistance of the guide rod 26 and the guide sliding of the mounting seat 25, the mounting seat 25 will move up with the rotation of the axial screw 24, that is, drive the mounting seat 25 and the test plate 432 and other overall structures to perform the lifting operation, specifically, the test plate 432 is moved up along the building wall; start to complete the plane inspection operation of the building wall from bottom to top. In the initial state, the staff sets the threshold of the pressure sensor to 9.9-10.1N, the pressure sensor 433 of the test board 432 presses the wall, and sets the pressure value of the pressure sensor 433 on the LED control panel 44 to 10N. That is, the fluctuation of the pressure value of plus or minus 0.1N belongs to the normal range of flatness consistency.

[0040] When the flatness of the building wall is abnormal, the wall protrusion will cause the pressure sensor detection value to increase. The wall pit will cause the pressure sensor detection value to decrease. On the basis of the fixed position of the detection instrument, the wall protrusion means that the extrusion of the wall pressure sensor 433 is enhanced, and the wall pit means that the extrusion of the wall pressure sensor 433 is weakened. Since the pressure sensor is initially set with a threshold, exceeding or falling below the threshold is recorded as abnormal by the LED control panel 44. At the same time, the pressure sensor 433 acts as a trigger start element, and transmits the abnormal trigger signal to the micro liquid pump 437, and the micro liquid pump 437 is started, and then begins to spray the indication mark at the abnormal building wall, which is convenient for the staff to check the data and wall indication later, thereby meeting the efficient building wall flatness detection needs. When the flatness detection operation of this part of the building wall is completed, the radial motor 31 starts to reverse, and the radial motor 31 will drive the radial screw rod 33 to rotate synchronously counterclockwise, and then drive the moving block 36 and the fixed frame 21 The overall structure is reset, that is, the test board is away from the building wall. At the same time, the axial motor 23 starts to reverse, driving the mounting seat 25 to move downward and reset.

[0041] When the flatness inspection of the building wall requires the radial inspection state to meet and improve the inspection efficiency, the staff starts the rotary motor 51. The forward rotation of the rotary motor 51 drives the main gear 52 to rotate clockwise, and then drives the sub-gear 53 and the connecting arm 41 to rotate 90 degrees as a whole through the transmission effect of the toothed belt 54. In this state, the base plate 42 is distributed up and down. Next, the staff adjusts the inspection instrument to the mobile state, and completes the inspection of the building plane by pushing the fixed frame to move from left to right.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.< / controller>

Claims

1. An efficient building wall flatness detection instrument, characterized by: The invention comprises a support mechanism (1), an axial drive (2), a radial drive (3), a testing mechanism (4), a rotary drive (5) and a grinding mechanism (7); the support mechanism (1) comprises a base (11) and a moving member (12); the base (11) is distributed on the left and right; the moving member (12) is used to drive the base (11) to move to a preset position and then complete a fixing operation; the axial drive (2) is used to drive the testing mechanism (4) to move up and down; and the radial drive (3) is used to drive the testing mechanism (4) to move forward and backward; The test mechanism (4) comprises a connecting arm (41), a base plate (42) and a test piece (43); the connecting arm (41) is distributed front to back, one end of which is connected to a mounting seat (25) and the other end of which is connected to the base plate (42); the base plate (42) is distributed left to right; the test pieces (43) are evenly distributed in a plurality of groups and are all arranged on the base plate (42); each group of the test pieces (43) comprises a test rod (431), a test plate (432), a pressure sensor (433) and an indication structure (434); one end of the test rod (431) is connected to the base plate (42) and the other end is connected to the test plate (432); the indication structure (434) is used to When the pressure sensor (433) detects a plane abnormality, a trigger is initiated to complete the indication operation; an LED control panel (44) is also provided on the substrate (42), the LED control panel (44) is connected to the plurality of pressure sensors (433), and has the functions of data storage, calling and viewing, and one-key clearing; both sides of the substrate (42) can also be connected to a preset number of the test pieces (43) as a whole by providing connecting pieces (6) to complete test operations with different length requirements; the rotary drive (5) is used to drive the connecting arm (41) to perform a 90-degree rotary motion to complete the switching between the axial movement detection state and the radial movement detection state of the building wall plane; The grinding mechanism (7) comprises a grinding frame (71), a grinding shaft (72), a grinding disc (73) and a grinding motor (74); the grinding frame (71) is installed on the base plate (42) in a left-right distributed manner, and has an L-shaped cross-section; the grinding shaft (72) is rotatably arranged on the grinding frame (71), the grinding disc (73) is sleeved and installed on the grinding shaft (72), and a frosting layer (75) is arranged on the grinding disc (73), and the frosting layer (75) is kept in contact with the wall surface in a working state; the grinding motor (74) is fixedly installed on the grinding frame (71) through a bracket, and the output shaft is connected to the grinding shaft (72).

2. The high-efficiency building wall flatness detection instrument as claimed in claim 1, characterized in that: The moving part (12) comprises a universal wheel (121) and a support leg (122); the universal wheel (121) is arranged on the base (11) via a bracket, and the support leg (122) is arranged on the base (11) and is located on one side of the universal wheel (121); the support leg (122) comprises an electric hydraulic lifting rod (123) and a support foot (124); one end of the electric hydraulic lifting rod (123) is arranged on the base (11), and the other end is connected to the support foot (124); one end of the electric hydraulic lifting rod (123) is also connected to a control switch (125), and the control switch (125) is fixed to the base (11) by screws.

3. The high-efficiency building wall flatness detection instrument as claimed in claim 2, characterized in that: The LED control panel (44) has a built-in controller (46), and the controller (46) includes a data acquisition unit (461), a data processing unit (462), an image display unit (463) and a data storage unit (464); the data acquisition unit (461) is used to connect and receive real-time signal detection data of the pressure sensor; the data processing unit (462) is used to receive the pressure detection signal of the data acquisition unit, and convert the pressure detection signal into an X / Y / Z parameter signal in a three-dimensional coordinate system through a pressure-displacement conversion analysis and processing technology; the image display unit (463) is used to receive X, Y, and Z coordinate parameter information in a three-dimensional coordinate system, and establish three-dimensional space trajectory simulation information, thereby intuitively displaying a wall simulation object in a three-dimensional state, and displaying a green trajectory in the simulated wall image. The normal state of the wall flatness is displayed; the abnormality of the wall flatness detection is displayed through a red track; the data storage unit (464) is responsible for storing and managing all relevant information of the detection instrument, and displays it in the form of a form, wherein the information of the detection instrument includes the device name, sensor type, description, pressure detection information, coding label information, three-dimensional coordinate value information, and editing thereof; it also includes the management of adding, deleting and modifying information, and supports the search function, while building a wall flatness detection management database, and storing data through encryption technology; the data storage unit (464) is also connected to the cloud background terminal (47), and can transmit the detection data to the cloud background terminal (47) in real time through the 5G network transmission protocol technology, and the cloud background terminal (47) can search and view the data and issue the recommended command.

4. The high-efficiency building wall flatness detection instrument as claimed in claim 3, characterized in that: The axial drive (2) comprises a fixing frame (21), a fixing plate (22), an axial motor (23), an axial screw rod (24), a mounting seat (25), and a guide rod (26); the fixing frame (21) is a rectangular structure and is vertically mounted on the base (11); the fixing plate (22) is arranged at the lower part of the fixing frame (21); the axial motor (23) is fixedly mounted on the fixing plate (22) via a bracket; the axial screw rod (24) and the guide rod (26) are both vertically arranged between the top surface of the fixing frame (21) and the fixing plate (22), and the axial screw rod (24) is connected to the axial motor (23); the mounting seat (25) passes through the axial screw rod (24) and the guide rod (26); the radial drive (3) comprises a radial motor ( The radial motor (31) is fixedly mounted on the base (11) through a bracket, and the side wing plates (32) are two, which are distributed front and back, and are both arranged on the base (11); the radial screw rod (33) is rotatably arranged between the two side wing plates (32), and one end of the radial screw rod (33) is connected to the radial motor (31); the slide rail (34) is arranged on the base (11), and is two, which are symmetrically distributed left and right; the slide block (35) is arranged on the fixed frame (21), and is matched with the slide rail (34); the moving block (36) is arranged in the middle of the lower end surface of the fixed frame (21), and is threadedly connected to the radial screw rod (33).

5. The high-efficiency building wall flatness detection instrument as claimed in claim 4, characterized in that: A scale line (37) extending forward and backward is also provided on the upper end surface of the base (11) and located on one side of the slide rail (34), and an indication point (38) for correspondingly observing the moving scale distance is provided in the middle of the slide block (35).

6. The high-efficiency building wall flatness detection instrument as claimed in claim 5, characterized in that: A reinforcing rib (45) is further provided between the base plate (42) and the connecting arm (41); one side of the test plate (432) is a vertical surface (435) and the other side is a curved surface (436); and the pressure sensor (433) is provided at a protrusion of the curved surface (436).

7. The high-efficiency building wall flatness detection instrument as claimed in claim 6, characterized in that: The indicating structure (434) comprises a micro liquid pump (437) and a nozzle (438); the inner cavity of the test board (432) is provided with a liquid storage chamber (439), and the liquid storage chamber (439) is filled with pigment liquid; the micro liquid pump (437) is arranged in the liquid storage chamber (439), one end of the nozzle (438) is connected to the micro liquid pump (437), and the other end extends to the outside of the test board (432), and the nozzle (438) is located below the pressure sensor (433); the micro liquid pump (437) maintains a signal connection with the pressure sensor (433).

8. The high-efficiency building wall flatness detection instrument as claimed in claim 7, characterized in that: The connecting piece (6) comprises a fixing column (61), a connecting protrusion (62), a cable connector (63) and a cable jack (64); the cross section of the fixing column (61) is the same as the cross section of the base plate (42), and the fixing column (61) is connected to the test rod (431); a connecting groove (65) is provided at one end of the fixing column (61), and the connecting protrusion (62) is provided at the other end, and the connecting protrusion (62) of the fixing column (61) is matched and installed with the connecting groove (65) of the adjacent fixing column (61); the cable connector (63) is arranged on the connecting protrusion (62) and is connected to the pressure sensor (433); the cable jack (64) is arranged on the connecting groove (65) and is matched and installed with the cable connector (63); a group of connecting pieces (6) and a group of test pieces (43) constitute an additional test unit (66).

9. The high-efficiency building wall flatness detection instrument as claimed in claim 8, characterized in that: Both ends of the base plate (42) are provided with connection grooves (65), and the connection grooves (65) of the base plate (42) are also provided with cable jacks (64), and the cable jacks (64) therein are electrically connected to the LED control panel (44); the connection grooves (65) of the base plate (42) are matched and installed with the connection protrusions (62) correspondingly connected to the fixing columns (61), and the cable jacks (64) of the base plate (42) are matched and installed with the cable connectors (63) correspondingly connected to the fixing columns (61).

10. The high-efficiency building wall flatness detection instrument as claimed in claim 9, characterized in that: The rotary drive (5) comprises a rotary motor (51), a main gear (52), a sub-gear (53) and a toothed belt (54); the rotary motor (51) is fixedly mounted on the mounting seat (25) via a bracket, the main gear (52) is sleeved and mounted on the output shaft of the rotary motor (51), the sub-gear (53) is sleeved and mounted on the connecting arm (41), and the toothed belt (54) is arranged between the main gear (52) and the sub-gear (53).

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