A multifunctional measuring ruler for building measurement

Abstract

The present invention relates to the technical field of building measurement equipment, and in particular to a multifunctional measuring ruler for building measurement. It comprises a fixed seat, the fixed seat is slidably connected to a support frame, the support frame is internally limited and slidably connected to a first telescopic frame, the first telescopic frame is internally limited and slidably connected to a second telescopic frame, the second telescopic frame is internally limited and slidably connected to a third telescopic frame, the third telescopic frame is fixedly connected to a fixed block at one end away from the fixed seat, the fixed block is rotatably connected to a rotating plate, the rotating plate is connected to a measuring plate through two circular rings, a plurality of limit blocks are threadedly connected to the measuring plate, and the limit blocks are limitedly matched with the telescopic ends adjacent to the measuring plate. The present invention supports the upper side of the measuring plate through the support frame, the first telescopic frame, the second telescopic frame, the third telescopic frame, the fixed block and the rotating plate, so that the measuring plate naturally droops due to gravity, thereby preventing the error caused by the bending of the measuring plate and improving the measurement accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of building measurement equipment, in particular to a multifunctional measuring ruler for building measurement. Background Art

[0002] When measuring the distance between two points, a measuring ruler and a total station are usually used for measurement. During use, the total station is first fixed, and the measuring ruler is perpendicular to the ground. Then the total station is used to aim at the measuring ruler to ensure that a certain scale of the ruler is clearly visible. Then, the horizontal dial of the total station is rotated until the total station is aligned with the ruler. The distance between the two points is measured by the cooperation of the measuring ruler and the total station. During use, it is very important to keep the measuring ruler vertical. The bending of the measuring ruler may cause the line of sight to be non-parallel to the scale, thereby affecting the accuracy of the reading.

[0003] In the prior art, the present invention with announcement number CN210625668U discloses a measuring ruler for construction engineering, including a first ruler and a locking structure, a base is installed at the bottom of the first ruler, and a support leg is connected to the lower outer side of the base, a grip and a horizontal base plate are fixed on the left and right sides of the first ruler, and the grip is located below the horizontal base plate, the locking structure is installed at the upper left corner of the front of the first ruler, and a second ruler is sleeved inside the first ruler, a horizontal oil pipe is inlaid on the upper surface of the horizontal base plate, a connecting rod is installed inside the connection between the base and the support leg, the locking structure includes a support rod, a spring and a ball, and a spring is sleeved on the outer side of the support rod, a ball is rotatably installed on the left end of the support rod, and a slide groove is provided on the outer wall of the second ruler. The present invention sets three support legs distributed in a triangular shape, and the triangular structure is stable, so that the ruler no longer needs to be manually supported when in use, and can be stably supported, which greatly reduces the trouble of the user.

[0004] In the above technology, the position of the bubble set inside is used to determine whether the position of the entire measuring ruler is in a vertical state, so as to make adjustments. However, it is still debugged by staff, which is prone to errors. The existing measuring ruler can generally be extended and retracted, and the measuring ruler after extension reaches five meters. During long-term use, the repeated extension and retraction of the measuring ruler causes its wear to increase, resulting in a gap at the extension and retraction of the measuring ruler. After the staff extends the measuring ruler, the measuring ruler is prone to offset and bending, which causes a certain deviation in the measurement data. For this reason, we propose a measuring ruler for construction engineering. Summary of the invention

[0005] In order to overcome the disadvantage that the measuring ruler is easily bent during use, thereby causing measurement errors, the present invention provides a multifunctional measuring ruler for building measurement.

[0006] The technical implementation scheme of the present invention is: it includes a fixed seat, the fixed seat is slidably connected to a support frame, the support frame is limitedly slidably connected to a first telescopic frame, the first telescopic frame is limitedly slidably connected to a second telescopic frame, the second telescopic frame is limitedly slidably connected to a third telescopic frame, the third telescopic frame is fixedly connected to a fixed block at one end away from the fixed seat, the fixed block is rotatably connected to a rotating plate, a symmetrically distributed first elastic member is fixedly connected between the rotating plate and the fixed block, the rotating plate is connected to a measuring plate via two circular rings, a plurality of limit blocks are threadedly connected to the measuring plate, the limit blocks are limitedly matched with the telescopic end adjacent to the measuring plate, and a limiting mechanism is arranged on the lower side of the fixed seat.

[0007] More preferably, the extended length of the measuring plate is smaller than the stretched length of the telescopic rod formed by the supporting frame, the first telescopic frame, the second telescopic frame and the third telescopic frame.

[0008] More preferably, the upper ends of the support frame, the first telescopic frame and the second telescopic frame are all threadedly connected with rotating blocks, and the lower sides of the first telescopic frame, the second telescopic frame and the third telescopic frame are all provided with limiting holes, and the limiting holes are matched with the adjacent rotating blocks.

[0009] More preferably, the fixed seat is fixed with symmetrically distributed pneumatic telescopic rods, the telescopic ends of the pneumatic telescopic rods are fixed with the support frame, the symmetrically distributed fixed parts of the pneumatic telescopic rods are commonly connected with a conduit through an air guide shell, the end of the conduit away from the pneumatic telescopic rods is connected with an air pump, the air pump is detachably connected to the fixed seat, and the air pump is provided with a valve.

[0010] More preferably, the limiting mechanism includes rectangularly distributed brackets, the rectangularly distributed brackets are all limitedly rotatably connected to the fixed seat, the fixed seat is slidably connected to a sliding frame, the sliding frame is cross-shaped, the sliding frame is limitedly slidably connected to the measuring plate, the sliding frame is fixedly connected with a hydraulic telescopic rod and a liquid storage shell that are interconnected, the sliding frame is slidably connected with a symmetrically distributed friction plate, the friction plate is slidably connected to the fixed seat, the friction plate is extruded and matched with the liquid storage shell, the telescopic end of the hydraulic telescopic rod is fixedly connected with an extrusion plate, and the extrusion plate is limitedly matched with the measuring plate.

[0011] More preferably, the fixed seat is slidably connected with a first sliding plate and a second sliding plate, the first sliding plate and the second sliding plate are both extruded and fitted with the adjacent friction plate, the first sliding plate is fixedly connected with a round rod passing through the second sliding plate, the round rod of the first sliding plate is provided with a thread, the first sliding plate is threadedly connected with a rotating handle through the round rod thereon, the rotating handle is extruded and fitted with the second sliding plate, and a second elastic member is connected between the first sliding plate and the second sliding plate.

[0012] More preferably, the lower end of the measuring plate is connected to a weight ball via a ring, the weight ball is used to pull the measuring plate downward, and the lower side of the weight ball is slidably connected to a measuring column, and the measuring column is marked with scales.

[0013] More preferably, it also includes a circular shell, which is fixed to the fixed block, a square hole is opened in the middle of the third telescopic frame, the circular shell is rotatably connected to a disc, a torsion spring is fixed between the disc and the circular shell, a transmission rod is fixed to the side of the disc away from the circular shell, the transmission rod is fixed to a rotating page, and the rotating page is located in the square hole of the third telescopic frame.

[0014] More preferably, the circular shell is slidably connected to symmetrically distributed limit columns, and a tension spring is fixedly connected between the limit column and the adjacent circular shell, the disc is provided with symmetrically distributed holes, and the disc is limitedly matched with the symmetrically distributed limit columns through the holes thereon, the fixed seat is fixedly connected to a rectangularly distributed winding box, a pull rope is wound around the winding box, and two adjacent pull ropes along the moving direction of the sliding frame are connected to the adjacent limit columns together, the rotating page is fixedly connected to a limit strip, and the limit strip is limitedly matched with the third telescopic frame.

[0015] More preferably, the winding box is provided with a torsion spring for winding up the adjacent pull ropes, and the maximum torsion force of the torsion spring in the winding box is smaller than the initial tension of the tension spring.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The present invention supports the upper side of the measuring plate through a support frame, a first telescopic frame, a second telescopic frame, a third telescopic frame, a fixed block and a rotating plate, so that the measuring plate naturally droops due to gravity, thereby preventing errors caused by bending of the measuring plate and improving measurement accuracy.

[0017] 2. The present invention uses a weighted ball to pull the measuring plate downward to keep the measuring plate in a vertical state, and uses a measuring column to measure the distance from the measuring point to the measuring plate to avoid errors.

[0018] 3. The present invention uses an air pump to make the telescopic ends of the two pneumatic telescopic rods drive the support frame to move upward. Since the length of the measuring plate remains unchanged, the length of the support frame becomes longer, and the rod composed of the support frame, the first telescopic frame, the second telescopic frame and the third telescopic frame begins to bend, thereby increasing the force on the measuring plate, straightening the measuring plate, thereby improving the ability of the measuring plate to resist deformation and reducing the impact of wind.

[0019] 4. When encountering a sudden strong wind, the present invention drives the limit column to move upward through the pull rope, so that the limit column is separated from the disc, the disc rotates under the action of the torsion spring, and the rotating leaf rotates through the transmission. The third telescopic frame and the rotating leaf are perpendicular to each other and form a cross shape, thereby improving the deformation resistance of the third telescopic frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the fixing seat, the supporting frame and the measuring plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the first telescopic frame, the second telescopic frame and the third telescopic frame of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the support frame, the second telescopic frame and the third telescopic frame of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating block and the limiting hole of the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the bracket and the sliding frame of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the parts in the fixing seat of the present invention;

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the pneumatic telescopic rod, the conduit and the air pump of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the weighted ball and the measuring column of the present invention;

[0030] Fig.11 It is a three-dimensional structural schematic diagram of the circular shell and the transmission rod of the present invention;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the internal parts of the circular shell of the present invention.

[0032] The meanings of the reference numerals in the figure are: 1-fixed seat, 11-support frame, 12-first telescopic frame, 121-second telescopic frame, 122-third telescopic frame, 13-fixed block, 14-rotating plate, 15-first elastic member, 16-measuring plate, 17-limiting block, 2-rotating block, 21-limiting hole, 3-pneumatic telescopic rod, 31-conduit, 32-pump, 33-valve, 41-bracket, 42-sliding frame, 43 - hydraulic telescopic rod, 431 - liquid storage shell, 432 - friction plate, 44 - extrusion plate, 45 - first sliding plate, 451 - second sliding plate, 46 - second elastic member, 47 - rotating handle, 5 - counterweight ball, 51 - measuring column, 61 - circular shell, 62 - disc, 63 - torsion spring, 64 - transmission rod, 65 - limit column, 66 - tension spring, 67 - winding box, 68 - pull rope, 7 - rotating page, 71 - limit strip. DETAILED DESCRIPTION

[0033] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0034] When measuring with a measuring ruler and a total station, the wear of the measuring ruler increases due to repeated extension and retraction, causing the measuring ruler to shake at the joint after extension due to poor sealing, thereby causing the measuring ruler to bend and resulting in inaccurate measurement data. To this end, the present invention improves the situation by the following steps:

[0035] Embodiment 1: A multifunctional measuring ruler for building measurement, such as Figure 1-Figure 4As shown, it includes a fixed seat 1, the fixed seat 1 is slidably connected to a support frame 11, the support frame 11 is internally limited and slidably connected to a first telescopic frame 12, the first telescopic frame 12 is internally limited and slidably connected to a second telescopic frame 121, the second telescopic frame 121 is internally limited and slidably connected to a third telescopic frame 122, the upper end of the third telescopic frame 122 is fixedly connected to a fixed block 13, the upper end of the fixed block 13 is rotatably connected to a rotating plate 14, two symmetrically distributed first elastic members 15 are fixedly connected between the rotating plate 14 and the fixed block 13, the first elastic member 15 is a tension spring, the first elastic member 15 always stores force, when the rotating plate 14 is vertical, the tension of the first elastic member 15 is the smallest, the rotating plate 14 A measuring plate 16 is connected by two circular rings. The measuring plate 16 is connected by two circular rings, which can provide the measuring plate 16 with sufficient degrees of freedom so that the measuring plate 16 can be vertical when in use. The measuring plate 16 can be telescopic. The telescopic length of the measuring plate 16 is less than the length of the telescopic rod formed by the support frame 11, the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 after stretching. The measuring plate 16 consists of four sections. Three limit blocks 17 are threadedly connected to the measuring plate 16. The limit blocks 17 are limitedly matched with the telescopic ends adjacent to the measuring plate 16, so that the limit blocks 17 lock the telescopic ends adjacent to the measuring plate 16. A limiting mechanism is provided on the lower side of the fixed seat 1.

[0036] like Figure 3-Figure 5 As shown, the upper ends of the support frame 11, the first telescopic frame 12 and the second telescopic frame 121 are rotatably connected with a rotating block 2, the rotating block 2 is a threaded rod, and the lower sides of the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 are provided with limiting holes 21, and the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 are limitedly matched with the adjacent rotating blocks 2 through the limiting holes 21 thereon, and the rotating block 2 is used to limit the positions of the adjacent limiting holes 21, thereby fixing the positions of the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122.

[0037] like Figure 6 and Figure 8 As shown, the fixed seat 1 is fixed with two symmetrically distributed pneumatic telescopic rods 3, the telescopic ends of the pneumatic telescopic rods 3 are fixed with the support frame 11, the fixed parts of the two pneumatic telescopic rods 3 are connected with a conduit 31 through an air guide shell, the front end of the conduit 31 is connected with an air pump 32, the air pump 32 is detachably connected to the fixed seat 1, a semicircular notch is provided on the fixed seat 1 for storing the air pump 32, the air pump 32 is provided with a valve 33, and the valve 33 is used to release the gas in the pneumatic telescopic rod 3.

[0038] like Figure 6-Figure 9 As shown, the limiting mechanism includes four brackets 41 distributed in a rectangular shape. The four brackets 41 are all connected to the lower side of the fixed seat 1 by limiting rotation. The four brackets 41 are used to support the fixed seat 1. The brackets 41 are limitedly matched with the fixed seat 1. When the four brackets 41 are rotated to the position shown in FIG. Figure 7 In the position shown, the bracket 41 no longer rotates under the limit of the fixed seat 1, and the fixed seat 1 is slidably connected with a sliding frame 42, the sliding frame 42 is cross-shaped, and the sliding frame 42 is limited and slidably connected with the measuring plate 16. A groove is opened on the right side of the sliding frame 42, and the groove of the sliding frame 42 is fixed with a hydraulic telescopic rod 43 and a liquid storage shell 431 that are interconnected. The liquid storage shell 431 can be squeezed and deformed. The sliding frame 42 is slidably connected to the friction plates 432 that are symmetrically distributed, and the friction plates 432 and the fixed seat 1 is slidably connected, the friction plate 432 slides left and right on the fixing seat 1, the friction plate 432 is squeezed and matched with the liquid storage shell 431, the telescopic end of the hydraulic telescopic rod 43 is fixedly connected with the squeezing plate 44, and the squeezing plate 44 is limitedly matched with the measuring plate 16. When the friction plate 432 squeezes the liquid storage shell 431, the liquid in the liquid storage shell 431 enters the hydraulic telescopic rod 43, the telescopic end of the hydraulic telescopic rod 43 extends, and drives the squeezing plate 44 to squeeze the measuring plate 16 to the left, thereby limiting the movement of the measuring plate 16.

[0039] like Figure 6-Figure 9 As shown, the first sliding plate 45 and the second sliding plate 451 are slidably connected at the right position of the middle part of the fixed seat 1, and the first sliding plate 45 and the second sliding plate 451 are both squeezed and matched with the adjacent friction plate 432. The first sliding plate 45 and the second sliding plate 451 squeeze the friction plate 432, thereby limiting the left and right movement of the friction plate 432. The first sliding plate 45 is fixedly connected to a round rod passing through the second sliding plate 451, and the front end of the round rod of the first sliding plate 45 is provided with a thread. The first sliding plate 45 is threadedly connected to a rotating handle 47 through the round rod thereon, and the rotating handle 47 is squeezed and matched with the second sliding plate 451. A second elastic member 46 is connected between the first sliding plate 45 and the second sliding plate 451, and the second elastic member 46 is a spring.

[0040] like Fig.10 and Fig.11 The lower end of the measuring plate 16 is connected to a counterweight ball 5 through two rings. The counterweight ball 5 is used to pull the measuring plate 16 downward to keep the measuring plate 16 in a vertical state. A measuring column 51 is slidably connected to the lower side of the counterweight ball 5. The extension line of the measuring column 51 passes through the center of the counterweight ball 5. The measuring column 51 is in a vertical state when in use. The measuring column 51 is marked with scales for measuring the distance between the measuring point and the zero scale of the measuring plate 16.

[0041] When using a measuring ruler and a total station for measurement, the staff places the total station at a designated position and places the device at a designated area within the site to be measured, then rotates the four brackets 41, spreads the four brackets 41, places the device on the ground, and supports the device with the four brackets 41. The staff then rotates the rotating block 2 and the limit block 17 as needed, and allows the first telescopic frame 12, the second telescopic frame 121, the third telescopic frame 122, and the telescopic ends of the measuring plate 16 to slide freely by rotating the rotating block 2 and the limit block 17. The staff then pulls the first telescopic frame 12, the second telescopic frame 121, and the third telescopic frame 122 upward, and the upper end of the third telescopic frame 122 drives the fixed block 13 to move upward, and the fixed block 13 pulls the telescopic portion of the measuring plate 16 through the rotating plate 14, The contracted part is stretched out. In the process of stretching the telescopic part of the measuring plate 16, since the lengths of the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 after being extended are greater than the length of the measuring plate 16 after being stretched, the rotating plate 14 rotates to the right to be parallel to the fixed seat 1 under the stretching of the measuring plate 16. At the same time, under the limiting effect of the sliding frame 42 on the lower part of the measuring plate 16, the rotating plate 14 provides an upward pulling force to the measuring plate 16. At the same time, the measuring plate 16 moves to the right under the action of its own gravity, so that the measuring plate 16 remains vertical, thereby improving the measurement accuracy. The first elastic member 15 is stretched, and at the same time, the measuring plate 16 is separated from the supporting frame 11, so that the supporting frame 11, the first telescopic frame 12, the second telescopic frame 121, the third telescopic frame 122, the fixed block 13, the rotating plate 14 and the measuring plate 16 form an n shape.

[0042] As the measuring plate 16 gradually moves away from the supporting frame 11, the lower end of the measuring plate 16 drives the sliding frame 42 to slide in the fixing seat 1, and at the same time, the counterweight ball 5 pulls the measuring plate 16 downward to straighten the measuring plate 16 to prevent the measuring plate 16 from bending. At this time, the upper end of the measuring plate 16 is subjected to an upward pulling force, and the lower end of the measuring plate 16 is subjected to a downward pulling force. By simultaneously pulling the upper and lower end points of the measuring plate 16 outward, the bending resistance of the measuring plate 16 during use is improved.

[0043] During the movement of the measuring plate 16 , the measuring plate 16 moves forward and backward along the sliding frame 42 , and the measuring plate 16 drives the sliding frame 42 to move left and right on the fixing seat 1 , so that the measuring plate 16 can move freely within a certain range, so that the measuring plate 16 can move to a vertical state.

[0044] As the counterweight ball 5 moves following the measuring plate 16, the counterweight ball 5 drives the measuring column 51 to move. The staff then moves the fixing seat 1 and moves the measuring column 51 to the position of the measuring point. The lower end of the measuring column 51 is adjusted to contact the lower side of the metal nail. The value at the upper end of the measuring column 51 is then observed and recorded. The value displayed on the measuring column 51 is the value from the lower end of the measuring column 51 to the initial scale of the measuring plate 16. The actual height can be obtained by adding the value on the measuring column 51 and the value on the measuring plate 16.

[0045] After the measuring plate 16 is stationary, the staff rotates the rotating handle 47, and the rotating handle 47 is rotated to the left on the first sliding plate 45, and the rotating handle 47 is moved backward through the thread, and the rotating handle 47 squeezes the second sliding plate 451, and the first sliding plate 45 and the second sliding plate 451 approach each other, and the first sliding plate 45 and the second sliding plate 451 compress the second elastic member 46 therebetween. In the process of the first sliding plate 45 and the second sliding plate 451 approaching each other, the first sliding plate 45 and the second sliding plate 451 squeeze the adjacent friction plates 432, and the friction plates 432 squeeze the liquid storage shell 431, and limit the left and right sliding of the friction plates 432 by friction, thereby limiting the left and right sliding of the sliding frame 42. At the same time, the liquid in the liquid storage shell 431 enters the hydraulic telescopic rod 43 under the squeezing of the two friction plates 432, and the telescopic end of the hydraulic telescopic rod 43 drives the squeezing plate 44 to move left, and the squeezing plate 44 squeezes the measuring plate 16, thereby limiting the movement of the measuring plate 16, fixing the lower side of the measuring plate 16, facilitating the measurement of the measuring plate 16, and improving the measurement accuracy.

[0046] After the lower side of the measuring plate 16 is fixed, the staff uses the total station in conjunction with the measuring ruler to measure the length, and records the value of the measuring ruler when the total station is horizontal. The value displayed on the measuring column 51 is added to the value driven by the measuring ruler to obtain the length between the position where the total station illuminates the measuring ruler and the measuring point, and then the required value is obtained by calculation. By utilizing the natural verticality of the measuring plate 16, the device can still measure accurate values ​​even on an inclined road surface without the need for additional leveling.

[0047] When wind blows, the telescopic rod composed of the support frame 11, the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 is subjected to force under the influence of wind and is easier to bend, thereby reducing the pulling force on the measuring plate 16. In order to keep the measuring plate 16 stable, the staff takes out the air pump 32 from the fixed seat 1, and then the staff inflates the two pneumatic telescopic rods 3 through the air pump 32 and the conduit 31, so that the telescopic ends of the two pneumatic telescopic rods 3 maintain an upward force. Since the length of the measuring plate 16 remains unchanged, the force of the telescopic end of the pneumatic telescopic rod 3 is transmitted to the measuring plate 16 through the support frame 11, the first telescopic frame 12, the second telescopic frame 121, the third telescopic frame 122 and the rotating plate 14, thereby increasing the pulling force on the measuring plate 16, thereby improving the ability of the measuring plate 16 to resist deformation.

[0048] When the measurement is completed, the staff turns the valve 33 to open the valve 33, and the gas in the pneumatic telescopic rod 3 is discharged through the conduit 31 and the valve 33 in the air pump 32 in turn, and the telescopic end of the pneumatic telescopic rod 3 contracts downward. After the telescopic end of the pneumatic telescopic rod 3 is completely contracted, the valve 33 is closed, and then the rotating block 2 and the limit block 17 are twisted in the opposite direction, and the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame are folded to complete the measurement.

[0049] Embodiment 2: Based on embodiment 1, Fig.11 and 12 As shown, it also includes a circular shell 61, which is fixed to the fixed block 13. A square hole is opened in the middle of the third telescopic frame 122. A disc 62 is rotatably connected to the lower side of the circular shell 61. A torsion spring 63 is fixed between the disc 62 and the circular shell 61. The torsion spring 63 is used to drive the disc 62 to rotate. A transmission rod 64 is fixed to the lower side of the disc 62. The transmission rod 64 is fixed to a rotating page 7. The rotating page 7 is located in the square hole of the third telescopic frame 122.

[0050] like Fig.11 and 12As shown, the circular shell 61 is slidably connected with two symmetrically distributed limiting posts 65, and a tension spring 66 is fixed between the limiting posts 65 and the adjacent circular shell 61. The tension spring 66 is used to reset the adjacent limiting posts 65. The disk 62 is provided with two symmetrically distributed holes. The disk 62 is limitedly matched with the two symmetrically distributed limiting posts 65 through the holes thereon. Initially, the limiting posts 65 pass through the adjacent holes of the disk 62 to limit the disk 62. The fixed seat 1 is fixedly connected with a rectangular divided The cloth winding box 67 has a draw rope 68 wound inside it. A torsion spring is provided inside the winding box 67 for winding adjacent draw ropes 68. The maximum torsion force of the torsion spring in the winding box 67 is less than the initial tension of the tension spring 66. The two symmetrical draw ropes 68 on the front side are connected to the limiting column 65 on the front side, and the two symmetrical draw ropes 68 on the rear side are connected to the limiting column 65 on the rear side. The rotating page 7 is fixedly connected to the limiting strip 71, and the limiting strip 71 cooperates with the third telescopic frame 122 for limiting.

[0051] In the process of the third telescopic frame 122 driving the fixed block 13 to move upward, the fixed block 13 drives the circular shell 61 to move upward, and the circular shell 61 drives the pull rope 68 to move upward through the limit column 65. Under the action of the adjacent tension spring 66, the limit column 65 remains stationary relative to the circular shell 61, and the pull rope 68 is pulled out from the adjacent winding box 67. When the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 are all extended, the pull rope 68 is completely released and cannot be pulled out further.

[0052] If there is a sudden wind during measurement, the telescopic rod formed by the support frame 11, the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 will bend, and the fixed block 13 will easily swing with the third telescopic frame 122, which will generate a heavy burden on the telescopic rod formed by the support frame 11, the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122, causing the fixed block 13 to shake easily. Since the pull rope 68 is straightened, once the fixed block 13 shakes, the four pull ropes 68 will be pulled, and the fixed block 13 will be pulled by the four pull ropes 68 to reduce the swing and prevent the telescopic rod formed by the support frame 11, the first telescopic frame 12, the second telescopic frame 121 and the third telescopic frame 122 from shaking.

[0053] When the wind is too strong, the tension received by the pull rope 68 also increases. The pull rope 68 overcomes the elastic force of the tension spring 66 to drive the limit post 65 to move upward, so that the limit post 65 starts to move upward until the limit post 65 is separated from the disk 62. The disk 62 rotates under the action of the torsion spring 63, and the disk 62 drives the rotating page 7 to move through the transmission rod 64. The limit strip 71 on the rotating page 7 gradually contacts the third telescopic frame 122, and then stops rotating under the limit of the third telescopic frame 122. At this time, the third telescopic frame 122 and the rotating page 7 are perpendicular to each other and form a cross. The third telescopic frame 122 and the rotating page 7 are perpendicular to each other to improve the deformation resistance of the third telescopic frame 122 to prevent the third telescopic frame 122 from breaking. After use, the staff twists the rotating page 7 to reset the rotating page 7. The rotating page 7 resets the disk 62 through transmission. After the disk 62 is reset, the limit post 65 is reset under the tension of the adjacent tension spring 66, and the disk 62 is locked, and then the device is put away for the next use.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional measuring ruler for building measurement, characterized in that: The invention comprises a fixed seat (1), wherein the fixed seat (1) is slidably connected to a support frame (11), a first telescopic frame (12) is slidably connected to the support frame (11), a second telescopic frame (121) is slidably connected to the first telescopic frame (12), a third telescopic frame (122) is slidably connected to the second telescopic frame (121), a fixed block (13) is fixedly connected to one end of the third telescopic frame (122) away from the fixed seat (1), the fixed block (13) is rotatably connected to a rotating plate (14), a symmetrically distributed first elastic member (15) is fixedly connected between the rotating plate (14) and the fixed block (13), the rotating plate (14) is connected to a measuring plate (16) via two circular rings, a plurality of limit blocks (17) are threadedly connected to the measuring plate (16), the limit blocks (17) are limit-matched with the telescopic ends adjacent to the measuring plate (16), and a limit mechanism is provided on the lower side of the fixed seat (1); The limiting mechanism comprises rectangularly distributed brackets (41), the rectangularly distributed brackets (41) are all connected to the fixed seat (1) in a limited rotational manner, the fixed seat (1) is slidably connected to a sliding frame (42), the sliding frame (42) is cross-shaped, the sliding frame (42) is connected to the measuring plate (16) in a limited sliding manner, the sliding frame (42) is fixedly connected to a hydraulic telescopic rod (43) and a liquid storage shell (431) that are interconnected, the sliding frame (42) is slidably connected to symmetrically distributed friction plates (432), the friction plates (432) are slidably connected to the fixed seat (1), the friction plates (432) are extruded and matched with the liquid storage shell (431), the telescopic end of the hydraulic telescopic rod (43) is fixedly connected to an extrusion plate (44), and the extrusion plate (44) is in a limited position fit with the measuring plate (16).

2. A multifunctional measuring ruler for building measurement according to claim 1, characterized in that: The extended length of the measuring plate (16) is smaller than the extended length of the telescopic rod formed by the support frame (11), the first telescopic frame (12), the second telescopic frame (121) and the third telescopic frame (122).

3. The multifunctional measuring ruler for building measurement according to claim 1, characterized in that: The upper ends of the support frame (11), the first telescopic frame (12) and the second telescopic frame (121) are all threadedly connected to a rotating block (2); the lower sides of the first telescopic frame (12), the second telescopic frame (121) and the third telescopic frame (122) are all provided with a limiting hole (21); the limiting hole (21) is matched with an adjacent rotating block (2) for limiting position.

4. The multifunctional measuring ruler for building measurement according to claim 1, characterized in that: The fixing seat (1) is fixedly connected with symmetrically distributed pneumatic telescopic rods (3), the telescopic ends of the pneumatic telescopic rods (3) are fixedly connected with the support frame (11), the symmetrically distributed fixed parts of the pneumatic telescopic rods (3) are connected to a conduit (31) through an air guide shell, and one end of the conduit (31) away from the pneumatic telescopic rods (3) is connected to an air pump (32), the air pump (32) is detachably connected to the fixing seat (1), and the air pump (32) is provided with a valve (33).

5. The multifunctional measuring ruler for building measurement according to claim 1, characterized in that: The fixing seat (1) is slidably connected to a first sliding plate (45) and a second sliding plate (451); the first sliding plate (45) and the second sliding plate (451) are both pressed and matched with the adjacent friction plate (432); the first sliding plate (45) is fixedly connected to a round rod passing through the second sliding plate (451); the round rod of the first sliding plate (45) is provided with a thread; the first sliding plate (45) is threadedly connected to a rotating handle (47) through the round rod thereon; the rotating handle (47) is pressed and matched with the second sliding plate (451); a second elastic member (46) is connected between the first sliding plate (45) and the second sliding plate (451).

6. The multifunctional measuring ruler for building measurement according to claim 1, characterized in that: The lower end of the measuring plate (16) is connected to a weight ball (5) via a circular ring, and the weight ball (5) is used to pull the measuring plate (16) downwards. The lower side of the weight ball (5) is slidably connected to a measuring column (51), and the measuring column (51) is marked with a scale.

7. The multifunctional measuring ruler for building measurement according to claim 1, characterized in that: It also includes a circular shell (61), the circular shell (61) is fixedly connected to the fixed block (13), a square hole is opened in the middle of the third telescopic frame (122), the circular shell (61) is rotatably connected to a circular disk (62), a torsion spring (63) is fixedly connected between the circular disk (62) and the circular shell (61), a transmission rod (64) is fixedly connected to a side of the circular disk (62) away from the circular shell (61), the transmission rod (64) is fixedly connected to a rotating leaf (7), and the rotating leaf (7) is located in the square hole of the third telescopic frame (122).

8. The multifunctional measuring ruler for building measurement according to claim 7, characterized in that: The circular shell (61) is slidably connected to symmetrically distributed limiting columns (65), and a tension spring (66) is fixedly connected between the limiting columns (65) and the adjacent circular shell (61). The disk (62) is provided with symmetrically distributed holes, and the disk (62) is limitedly matched with the symmetrically distributed limiting columns (65) through the holes thereon. The fixed seat (1) is fixedly connected to a rectangularly distributed winding box (67), and a pull rope (68) is wound inside the winding box (67). Two adjacent pull ropes (68) along the moving direction of the sliding frame (42) are connected to the adjacent limiting columns (65). The rotating page (7) is fixedly connected to a limiting strip (71), and the limiting strip (71) is limitedly matched with the third telescopic frame (122).

9. The multifunctional measuring ruler for building measurement according to claim 8, characterized in that: The winding box (67) is provided with a torsion spring for winding up the adjacent pull rope (68), and the maximum torsion force of the torsion spring in the winding box (67) is less than the initial tension of the tension spring (66).

Images