CN109931847B - Multi-point displacement measuring and reading device - Google Patents
Multi-point displacement measuring and reading device Download PDFInfo
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- CN109931847B CN109931847B CN201910294749.4A CN201910294749A CN109931847B CN 109931847 B CN109931847 B CN 109931847B CN 201910294749 A CN201910294749 A CN 201910294749A CN 109931847 B CN109931847 B CN 109931847B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 73
- 239000012780 transparent material Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention belongs to the technical field of geotechnical engineering safety construction monitoring and measuring. The device comprises a guide rail, a hammer chamber, a force marking chamber, a spring, a movable baffle, a force marking plate, a force measuring device, a multi-point displacement meter, a guide rail, a hammer chamber and a force marking chamber, wherein the left end of the guide rail is connected to the multi-point displacement meter; the pull rod is connected with the movable baffle; the positioning device is used for controlling the pull rod to move and stop along the axial direction of the guide rail. The device is used for eliminating the measuring and reading errors caused by the difference of the direction control of the steel rule and the tensioning degree of the displacement transmission line by a measuring and reading person.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering safety construction monitoring and measuring, and particularly relates to a multipoint displacement measuring and reading device.
Background
The displacement of the rock and soil mass is an important index for monitoring and measuring the construction safety of the rock and soil engineering and researching the mechanical behavior of the rock and soil mass. At present, a plurality of multipoint displacement meters are available on the market, but because of the large deformation of surrounding rock of a coal mine, the most widely used multipoint displacement meters are hammer line type multipoint displacement meters (the displacement meters belong to mechanical multipoint displacement meters, because the extension of a steel wire connecting piece in the displacement meters depends on an iron hammer of an exposed section, the steel wire connecting piece is called a hammer line type multipoint displacement meter herein, and the following is the same), and at present, the measuring and reading of the hammer line type multipoint displacement meters are performed manually by measuring the length of an exposed rope (displacement transmission line) by using a steel rule to calculate the change quantity of the exposed rope. The method has the following problems: 1. the direction of the steel ruler and the tension degree of the displacement transmission line are different, the error of the measured and read value can reach 5mm, and sometimes the error of the measured and read value can be larger due to the influence of light on the high-level operation of the frame ladder; 2. different people measure and read, and the measurement and reading error exceeding 5mm is a frequent occurrence due to the grasping of the direction of the steel rule and the difference of the tightening degree of the displacement transmission line.
Disclosure of Invention
The invention aims to solve the problems and the shortcomings, and provides a multi-point displacement measuring and reading device which is used for eliminating measuring and reading errors caused by the difference of the control of the direction of a steel rule and the grasping of the tension degree of a displacement transmission line of a measuring and reading person.
In order to achieve the above purpose, the technical scheme adopted is as follows:
the multipoint displacement measuring and reading device comprises a guide rail, a hammer chamber, a force identification chamber, a pull rod and a positioning device, wherein the left end of the guide rail is connected to an outer cover of the multipoint displacement meter; the hammer chamber is arranged on the guide rail in a sliding way and is used for driving a small hammer of the multipoint displacement meter to move on the guide rail; the force marking chamber is arranged on the guide rail in a sliding manner and is fixedly connected to the right end of the hammer chamber, a spring is arranged in the force marking chamber, one end of the spring is fixed with the left side of the force marking chamber, the other end of the spring is connected with a movable baffle plate, a tension marking sheet is connected to the movable baffle plate, and a force reference sheet for comparing with the tension marking sheet is connected to the left side of the force marking chamber; the left end of the pull rod is connected with the movable baffle; the positioning device is used for controlling the pull rod to move and stop along the axial direction of the guide rail.
According to the multipoint displacement measuring and reading device, the guide rail is an outer tube, grooves or protrusions are axially distributed on the inner wall of the outer tube, and protrusions or grooves matched with the grooves or protrusions on the inner wall of the outer tube are uniformly distributed on the outer walls of the hammer chamber and the force marking chamber.
According to the multipoint displacement measuring and reading device, gaps which are convenient for the small hammer to pass through are formed in the side wall of the outer tube and the side wall of the hammer chamber, and gaps which are convenient for the rope for pulling the small hammer to pass through are also formed in the outer tube and the hammer chamber.
According to the multipoint displacement measuring and reading device, a positioning unit for preventing the small hammer from shaking and deviating is arranged on the left side of the hammer chamber, and a reading datum line is arranged at the left end of the hammer chamber.
According to the multi-point displacement measuring and reading device, the left end part of the outer tube is also provided with a slot for avoiding the ropes of other measuring points of the multi-point displacement measuring device.
According to the multipoint displacement measuring and reading device, the outer tube is provided with a size scale and a size mark.
According to the multipoint displacement measuring and reading device, the outer tube is made of transparent materials, and corresponding coincident size scales and size marks are arranged on the inner wall and the outer wall of the outer tube.
According to the multipoint displacement measuring and reading device, the positioning device comprises a positioning block and a positioning hoop, the positioning block is arranged in the outer tube in a sliding manner, a threaded hole which is axially penetrated is formed in the center of the positioning block, the pull rod is in threaded connection with the threaded hole, the left end of the pull rod is hinged with a connecting rod, so that the connecting rod can not rotate when the pull rod rotates, and the other end of the connecting rod is connected with the movable baffle; the positioning hoop is sleeved outside the outer tube in a sliding way and is made of transparent materials; the positioning hoop is symmetrically provided with a pair of positioning bolt devices, two rows of locking bolt holes are axially symmetrically distributed on the outer tube, the outer wall of the positioning block is provided with a pair of mutually symmetrical bolt holes, the locking bolt holes on the positioning block, the locking bolt holes on the outer tube and the positioning bolt devices are correspondingly arranged, and the positions of the locking bolt holes on the positioning block, the locking bolt holes on the outer tube and the locking bolts of the positioning bolt devices are overlapped by moving the positioning block and the positioning hoop, so that the locking bolts can be inserted into the locking bolt holes and the locking bolt holes at the same time.
According to the multipoint displacement measuring and reading device, the positioning bolt device further comprises a button for controlling the bolt to bounce and press down, and the button is a Push-Push type structure button.
According to the multipoint displacement measuring and reading device, the positioning device comprises a nut gear rotatably arranged at the right end part of the outer tube, a central hole of the nut gear is arranged into a screw hole in threaded connection with a pull rod, the pull rod is hinged with the movable baffle, when the pull rod rotates and moves along the axial direction of the outer tube, the movable baffle moves but does not rotate along the axial direction of the outer tube, the outer circular surface of the nut gear is provided with a bevel gear, a driving bevel gear for driving the nut gear to rotate is arranged at the side edge of the nut gear, and a gear shaft of the driving bevel gear is connected with a hand rocker or an automatic driving device.
By adopting the technical scheme, the beneficial effects are that:
when the multi-point displacement meter reading device is adopted for reading, the movable baffle is pulled by the pull rod during each reading, so that a certain scale mark (a line is determined in advance, a central line is usually selected) on the pull force identification sheet is overlapped with a scale mark on the reference sheet, namely, the tension of a rope on the multi-point displacement meter measured by the elasticity of a spring is consistent, at the moment, a reading datum line on the reading hammer chamber corresponds to the dimension marked on the outer tube, the error caused by different degrees of tension of displacement transmission lines during reading or different times in the prior art can be overcome, in addition, the scales on the inner wall and the outer wall of the outer tube are overlapped with the reading reference scale mark on the hammer chamber during reading, the strabismus is avoided during reading of the reading personnel, the human error of reading of the same person and different persons can be eliminated, and a positioning unit for preventing the small hammer from shaking and deviation is arranged on the left baffle of the hammer chamber, and the reading precision can be further improved; in addition, the device is stretched in two steps during measurement and reading, namely, a positioning block is fixed on a proper position of an outer tube by adopting a pull rod and a positioning hoop, then the pull rod is rotated, the pull rod drives a connecting rod to move (the connecting rod cannot rotate), a spring in a force marking chamber is stretched, a movable baffle plate connected with the spring and a tension marking sheet on the movable baffle plate synchronously move, the tension marking sheet and a reference sheet on a left baffle plate of the force marking chamber generate relative displacement, when a certain scale mark (a line is determined in advance, a central line is usually selected) on the tension marking sheet coincides with the scale mark on the reference sheet, the reading reference scale mark on a reading hammer chamber corresponds to the marked size on the outer tube, so that the speed of pulling the hammer chamber by the pull rod is high in two steps, the efficiency is high, the step of controlling the tension on a multi-point displacement meter wire is controlled by adopting a mode of rotating the pull rod, the start-stop control is convenient, and the final reading accuracy is high.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. Wherein the showings are for the purpose of illustrating some embodiments of the invention only and not for the purpose of limiting the same.
Fig. 1 is a schematic diagram of the principle of use of a multi-point displacement measuring and reading device according to an embodiment of the present invention.
Fig. 2 shows an enlarged structural schematic diagram of the section I of fig. 1.
Fig. 3 shows an enlarged structural schematic diagram of the L portion of fig. 1.
Fig. 4 shows one of the schematic cross-sectional A-A structural diagrams of fig. 1.
Figure 5 shows a second schematic cross-sectional view of A-A of figure 1.
Fig. 6 shows a schematic view of the B-B cross-sectional structure of fig. 1.
Fig. 7 shows a schematic structural view of the outer tube.
Fig. 8 shows a schematic structural diagram of the positional relationship of the small hammer in the hammer chamber.
Number in the figure:
1 is surrounding rock, 2 is a rope, 3 is a multipoint displacement meter outer cover, 4 is a small hammer, 5 is a force identification chamber, 6 is a locking nail hole, 7 is a bolt, 8 is a positioning hoop, 9 is an outer pipe, 10 is a connecting rod, 11 is a pull rod, 12 is a positioning block, 13 is a movable baffle, 14 is a force reference plate, 15 is a hammer chamber, 16 is a connecting rod, 17 is a spring, 18 is a tension identification plate, and 19 is a positioning unit.
Detailed Description
In order to make the objects, technical features and technical effects of the technical solution of the present invention more clear, an exemplary solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Referring to fig. 1-8, the embodiment discloses a multipoint displacement measuring and reading device, which comprises a guide rail, a hammer chamber 15, a force identification chamber 5, a pull rod 11 and a positioning device, wherein the guide rail in the embodiment adopts an outer tube 9, and the left end of the outer tube 9 is connected to an outer cover of the multipoint displacement meter in a sleeved mode; the hammer chamber 15 is arranged in the outer tube 9 in a sliding way, a chamber for accommodating the small hammer 4 of the multipoint displacement meter is formed in the hammer chamber 15, and a reading datum line is arranged on a baffle at the left end of the hammer chamber 15; the force marking chamber 5 is arranged in the outer tube 9 in a sliding manner and is fixedly connected to the right end of the hammer chamber 15, a spring 17 is arranged in the force marking chamber 5, one end of the spring 17 is fixed with a left baffle plate of the force marking chamber 5, the other end of the spring 17 is connected with a movable baffle plate 13, a tension marking sheet 18 is connected to the movable baffle plate 13, and a force reference sheet 14 for comparing with the tension marking sheet 18 is connected to the left baffle plate of the force marking chamber 5; the left end of the pull rod 11 is connected with the movable baffle 13; the positioning device is used for controlling the pull rod 11 to move and stop along the axial direction of the outer tube 9; wherein, all be equipped with the breach of being convenient for little hammer 4 to pass on the lateral wall of outer tube 9 and the lateral wall of hammer chamber 15, still be equipped with the gap that the cotton rope 2 of being convenient for draw little hammer 4 passed on outer tube 9 and the hammer chamber 15, outer tube 9, force marking chamber 5 are by transparent material preparation.
In this embodiment, the outer tube 9 is 50cm long, the central hole of the outer tube 9 is set as a stepped hole, the outer tube 9 is a partially notched transparent tube with two inner diameters, one end of the outer tube 9 is sleeved with the outer tube 3 of the multipoint displacement meter (the length of the outer convex part of the outer tube needs to be lengthened), the inner diameter of the end of the outer tube 9 is consistent with the outer diameter of the outer convex part of the outer tube 3 of the multipoint displacement meter, the inner diameter of the outer tube 9 of the section sleeved on the outer convex part of the outer tube 3 of the multipoint displacement meter is smaller than the inner diameters of other sections of the outer tube 9, and the outer tube 9 of the section is called an outer tube thickened section. The other sections of the outer tube 9 have the same inner diameter but are slightly larger, being the outer tube guiding sections.
Two rows of small holes (called locking nail holes 6) which are axially symmetrically distributed are formed in the outer tube guide section, the diameter of each locking nail hole 6 is 2-3 mm, and the distance is 20mm. At the outer tube guiding section, the inner and outer walls of the outer tube 9 are respectively provided with two symmetrically distributed micro grooves along the distribution direction of the small holes, and the inner and outer micro grooves are correspondingly arranged. The inner and outer micro grooves serve as guide grooves for the hammer chamber 15, the force marking chamber 5 and the positioning device.
In this embodiment, a gap is formed on the side of the outer tube guiding section adjacent to the thickened section of the outer tube, the gap is a half-tube opening section for placing or taking out the small hammer 4 of the multipoint displacement meter during measurement, and a linear gap for facilitating the wire rope 2 (connecting the wire rope 2 on the small hammer 4 of the multipoint displacement meter) to pass is formed on the tube wall (the tube wall of the thickened section of the outer tube on the outer tube gap bisector extension section) on the left side of the gap on the outer tube 9. The port of the left end part (outer pipe thickened section) of the outer pipe 9 is also provided with a slot for avoiding the rope 2 of other measuring points of the multi-point displacement meter.
The inner wall and the outer wall of the outer tube 9 are provided with corresponding and coincident size scales and size marks for measuring reading, and when the reading is measured, a reading datum line on the hammer chamber 15 needs to be coincident with the inner and outer scales of the outer tube 9, so that human reading errors can be avoided.
Of course, the outer tube 9 can also be made of non-transparent materials, the superposition condition of the tension marking piece and the force reference piece of the force marking chamber in the outer tube 9 can be observed from the axial slotting position on the outer tube, and the size scales and the size marks on the outer tube 9 can also be arranged on the side edges of the axial slotting of the side wall of the outer tube.
A hammer chamber 15 and a force marking chamber 5 are arranged in the outer tube guiding section.
Specifically, the hammer chamber 15 is a semicircular groove-shaped space for placing the upper rope 2 of the multipoint displacement meter and extending the small hammer 4. For the convenience of placing and taking out the operation of the small hammer 4, the baffles on two sides are designed to be full circles, a semi-tubular notch is arranged between the two baffles, the outer diameter of the semi-tubular notch is consistent with the inner diameter of the guiding section of the outer tube, and a gap which is convenient for the rope 2 to pass through is arranged on the left baffle on the left side of the notch on the hammer chamber 15. Two mutually symmetrical microprotrusions (for orientation) are distributed on the outer wall of the outer tube, and the microprotrusions are embedded into two symmetrical micro grooves on the inner wall of the outer tube guiding section and can axially slide along the outer tube 9 in the micro grooves.
In order to improve the measurement accuracy, it is necessary to position the small hammer 4 placed in the hammer chamber 15. Therefore, a positioning unit 19 for preventing the small hammer 4 from shaking and deviating is also provided on the left baffle of the hammer chamber 15. In this embodiment, the positioning unit 19 is a hollow protrusion near a semicircle segment arranged at the center of the left baffle of the hammer chamber 15, and the middle hole of the small hammer 4 is sleeved with the hollow protrusion during measurement. A color thin line is carved on the left baffle of the hammer chamber 15 and is used as a reading datum line, namely the size scale value on the outer tube 9 corresponding to the datum line is the current measuring reading.
Specifically, the force marking chamber 5 is in the shape of a transparent cylinder, and the outer diameter of the force marking chamber is consistent with the inner diameter of the outer tube guiding section. Two mutually symmetrical microprotrusions (for orientation) are distributed on the outer wall of the outer tube, and the microprotrusions of the force marking chamber 5 are embedded into two symmetrical micro grooves on the inner wall of the outer tube guiding section and can axially slide along the outer tube 9 in the micro grooves. The spring 17 is arranged in the middle of the force marking chamber 5, one end of the spring 17 is fixed with the boundary plate, namely, the spring 17 is fixed with the left baffle plate of the force marking chamber 5, the other end of the spring is connected with a circular baffle plate, a tension marking sheet 18 is firmly stuck on the circular baffle plate, and three tension marking scale marks which are expressed by different colors are arranged on the tension marking sheet 18 and represent the tensioning forces of three ropes 2. The circular baffle is connected with a connecting rod, and the connecting rod of the embodiment adopts a square rod, and the square rod passes through the other boundary plate of the force marking chamber 5, namely passes through the right baffle of the force marking chamber 5 and is hinged with the pull rod 11. The square rod can move axially along the outer tube 9 but cannot rotate. The force reference plate 14 is firmly stuck on the boundary plate (namely the left baffle plate of the force marking chamber 5) on one side of the fixed spring 17, and a scale mark is arranged on the force reference plate 14 and used as a reference of the tensile force during measurement. When the square bar is pulled, the spring 17 expands, the tension indicator piece 18 moves with it, and when a scale mark on the tension indicator piece 18 coincides with a scale mark on the force reference piece 14, a tension is indicated, which represents a tension of the string 2 in the multi-point displacement meter. The three graduation marks on the tension sign 18 represent the tension of the 3 cords 2. When each measurement is performed, the same scale mark on the tension marking sheet 18 is selected, so that the consistency of the tension of the ropes 2 can be ensured, and the error caused by inconsistent control of the tension of the ropes 2 by a measurer is eliminated.
The hammer chamber 15 in this embodiment is fixed to the force marking chamber 5 and shares an intermediate baffle.
One possible structure of the positioning device in this embodiment is: the positioning device comprises a positioning block 12 and a positioning hoop 8, wherein the positioning block 12 is arranged in the outer tube 9 in a sliding manner, a protrusion matched with a groove on the inner wall of the outer tube 9 is arranged on the outer wall of the positioning block 12, an axially-through threaded hole is arranged in the center of the positioning block 12, a pull rod 11 is in threaded connection with the threaded hole of the positioning block 12, the left end of the pull rod 11 is hinged with a connecting rod 16, so that the connecting rod 16 can not rotate when the pull rod 11 rotates, and the other end of the connecting rod 16 is connected with a movable baffle 13; the positioning hoop 8 is sleeved outside the outer tube 9 in a sliding way and is made of transparent materials, grooves or protrusions are axially distributed on the outer wall of the outer tube 9, and protrusions matched with the grooves on the outer wall of the outer tube 9 are arranged on the inner wall of the positioning hoop 8; wherein, a pair of location bolt device of symmetry distribution on the location hoop 8, two rows of locking nail holes 6 of axial symmetry distribution are gone up along on the outer tube 9, be equipped with a pair of bolt 7 holes of mutual symmetry on the outer wall of locating piece 12, the corresponding setting of locking nail hole 6 and location bolt device on the outer tube 9 on the locating piece 12, remove the position coincidence that the bolt hole on the locating piece 12, locking nail hole 6 and the bolt 7 of location bolt device on the outer tube 9 can be made to locating piece 12 and location hoop 8, and can make bolt 7 insert simultaneously locking nail hole 6 and bolt hole.
Specifically, in this embodiment, the positioning block 12 is a short cylinder with an outer diameter that corresponds to the inner diameter of the outer tube guiding section. Two mutually symmetrical microprotrusions (for orientation) are distributed on the outer wall of the positioning block 12, the microprotrusions are embedded into two micro grooves on the inner wall of the outer tube 9, and the positioning block 12 can axially slide along the outer tube 9 in the micro grooves. A pair of mutually symmetrical bolt holes are arranged on the two microprotrusions on the outer wall of the positioning block 12, and the two bolt holes can be communicated with each other in a pair for cleaning. The positioning hoop 8 is a transparent annular ring sleeved on the outer tube 9, and a pair of positioning bolt devices which are symmetrically distributed on the ring. The positioning bolt device further comprises a button for controlling the bolt 7 to bounce and press down, wherein the button is a Push-Push type structure button (the bolt 7 is pressed to be inserted into the bolt hole and then the bolt 7 is pressed to be withdrawn from the bolt hole, similar to a button switch on an automatic ball-point pen), and the Push-Push type structure button is a common button switch, and the detailed structure of the Push-Push type structure button is not repeated herein and is not shown in the drawings.
The inner wall of the positioning hoop 8 is provided with a microprotrusion which is embedded with a microprotrusion on the outer wall of the outer tube 9 to play a role in directional sliding and navigation, and the positioning hoop 8 can move back and forth along the axial direction of the outer tube 9 so as to facilitate Push-Push button operation. When the positioning block 12 needs to be fixed/positioned, the positioning hoop 8 can be moved to enable the bolt 7 in the positioning bolt device to be aligned with the bolt hole on the positioning block 12, and the button is symmetrically pressed down, so that the bolt 7 is inserted into the bolt hole in the positioning block 12. This is made very easy by the fact that both the outer tube 9 and the positioning collar 8 are made of transparent material, while the outer wall of the outer tube 9 is guided by micro grooves. When the measuring and collecting device is used, the positioning bolt device can be used for fixing the inner part of the pipe and the pipe is arranged in the special box.
Optionally, the right end of the pull rod 11 may also be connected with a connecting rod 10 in a joggle joint. In addition, the connecting rod 16 passes through the right baffle of the force marking chamber 5 to be connected with the movable baffle 13, the connecting rod 16 on the right baffle of the force marking chamber 5 passes through a hole to prevent the connecting rod 16 from rotating, in this embodiment, the connecting rod 16 is a square rod, the connecting rod 11 is a light and hard rod with a length of 1/2-4/5 and a threaded length, one end of the connecting rod is hinged with the square rod (the square rod penetrating through the force marking chamber 5) (the connecting rod 11 rotates, but the square rod does not rotate), the middle part of the connecting rod 11 passes through the positioning block 12 and is in threaded connection with the positioning block 12, and the other end of the connecting rod is connected with the connecting rod 10 through a cross tenon. The extension rod 10 is only used when extension is required when the pull rod 11 is fully seated in the outer tube 9. When lengthening, the tenon on the connecting rod 10 is inserted into the mortise on the pull rod 11, so that the connection is quick and the operation is convenient.
Of course, the positioning device in this embodiment may be other devices capable of controlling the movement and stopping of the pull rod 11 (not shown in the drawings), for example, the positioning device may be a nut gear rotatably disposed at the right end of the outer tube 9, a central hole of the nut gear is set as a screw hole screwed with the pull rod 11, the pull rod 11 is hinged with the movable baffle 13, when the pull rod 11 rotates and moves along the axial direction of the outer tube 9, the movable baffle 13 moves along the axial direction of the outer tube 9 but does not rotate, an outer circumferential surface of the nut gear is set as a bevel gear, a drive bevel gear driving the rotation of the nut gear is disposed at a side edge of the nut gear, and a gear shaft of the drive bevel gear may be connected with a manual rocker or other driving structure.
The working principle of the multipoint displacement measuring and reading device of the invention is as follows:
when the small hammer 4 enters the hammer chamber 15, a button of the positioning bolt device on the positioning hoop 8 is pressed to release the positioning block 12. If the measuring and reading device is operated vertically or obliquely, the positioning hoop 8 can slide downwards to separate from the outer tube 9, and the positioning hoop 8 can be temporarily fixed on the outer section of the outer tube guide section through the positioning bolt 7 device (on the principle that the movement of the positioning block 12 is not influenced). The positioning block 12 is fixed on the proper position of the outer tube 9 through the pull rod 11 and the positioning hoop 8, the pull rod 11 is rotated, the pull rod 11 drives the square rod to move (the square rod cannot rotate), the spring 17 in the force marking chamber 5 is stretched, the movable baffle 13 connected with the spring 17 and the tension marking sheet 18 on the movable baffle are synchronously moved, and the tension marking sheet 18 and the force reference sheet 14 on the left baffle connected with the spring 17 are relatively displaced. When a certain scale mark (a line is determined in advance, usually a neutral line) on the tension tag 18 coincides with a scale mark on the force reference piece 14, the reading reference scale mark on the left baffle of the reading hammer chamber 15 corresponds to the size marked on the outer tube 9. When reading, the scales on the inner and outer walls of the outer tube 9 are overlapped with the scale marks on the reading reference on the left baffle of the hammer chamber 15, and at the moment, the personal error of reading can be eliminated.
After the reading is finished, the pull rod 11 is rotated until the spring 17 is not stressed.
The assembling method of the multipoint displacement measuring and reading device comprises the following steps:
1. firstly, assembling the force identification chamber 5;
2. the pull rod 11 is screwed into the positioning block 12, and then the positioning block 12 is connected with the force marking chamber 5;
3. aligning the micro-protrusions on the outer walls of the positioning block 12, the force marking chamber 5 and the hammer chamber 15 (the two are integrated) with the micro-grooves on the inner wall of the outer tube 9, pushing the micro-grooves into the outer tube 9, and smoothly sliding the positioning block 12, the force marking chamber 5 and the hammer chamber 15 into the outer tube 9;
4. aligning the microprotrusions on the inner wall of the positioning hoop 8 with the positioning bolt device with the micro grooves on the outer wall of the outer tube 9, pushing the positioning hoop 8, and smoothly sleeving the positioning hoop 8 on the outer tube 9 along the micro grooves on the outer wall of the outer tube 9;
5. the pull rod 11 is moved to enable the bolt hole on the positioning block 12, the locking bolt hole 6 on the outer tube 9 and the bolt 7 on the positioning hoop 8 to coincide, and a button in the positioning bolt device is pressed to lock the positioning block 12. Then, the special box is filled.
The operation and use method of the measuring and reading device is as follows:
1. the exposed rope 2 on the multi-point displacement meter is placed into the outer tube 9 along the fine slit gap on the outer tube 9 and the hammer chamber 15, the small hammer 4 is placed into the hammer chamber 15, and the middle hole of the small hammer 4 is sleeved on the hollow nearly semicircular segment bulge in the hammer chamber 15 so as to position the small hammer 4.
2. The positioning block 12 is released by pressing a button of the positioning pin device on the positioning hoop 8. If the measuring and reading device is used for measuring and reading vertically or obliquely, the positioning hoop 8 can slide downwards to be separated from the outer tube 9, and at the moment, the positioning hoop 8 can be temporarily fixed on the outer section of the outer tube 9 through the positioning bolt device (on the principle that the movement of the positioning block 12 is not influenced).
3. The rope 2 outside the outer cover 3 of the multi-point displacement meter is pulled into the outer tube 9 through the pull rod 11, and meanwhile, the bottom of the measuring and reading device is sleeved on the outer cover 3 of the multi-point displacement meter, so that the relative position between the two is required to be fixed (marks can be made on the outer cover 3 of the multi-point displacement meter, and the sleeved positions are the same every time later).
4. The positioning block 12 is fixed in place on the outer tube 9 by a positioning latch means on the positioning collar 8.
5. The pull rod 11 is rotated, the pull rod 11 drives the square rod to move (the square rod cannot rotate), the spring 17 in the force marking chamber 5 is stretched, the movable baffle plate connected with the spring 17 and the tension marking sheet 18 on the movable baffle plate synchronously move, and the tension marking sheet 18 and the force reference sheet on the left baffle plate connected with the spring 17 are relatively displaced. When a certain scale mark (a line is determined in advance, and a line is usually selected) on the tension marking sheet 18 coincides with a scale mark on the force reference sheet, the reading reference scale mark on the left baffle of the reading hammer chamber 15 corresponds to the size marked on the outer tube 9. When reading, the scales on the inner and outer walls of the outer tube 9 are overlapped with the scale marks on the reading reference on the left baffle of the hammer chamber 15, and at the moment, the personal error of reading can be eliminated.
6. After the reading is finished, the pull rod 11 is rotated until the spring 17 is not stressed. Pressing a button in a positioning bolt device on the positioning hoop 8, releasing the positioning block 12, pulling the outer tube 9 to enable the hammer chamber 15 to reach the notch of the outer tube 9, taking out the small hammer 4, detaching the measuring and reading (instrument) device from the multi-point displacement meter outer cover 3, and putting the small hammer 4 in place. Pulling the pull rod 11, adjusting the position of the positioning block 12, pressing a button in a positioning bolt device on the positioning hoop 8, and locking the positioning block 12. Thus far, the measurement and reading of one measurement point of the multi-point displacement meter is finished.
7. Repeating the steps to finish the measurement and reading of other measuring points of the multi-point displacement meter. Thus, the measurement and reading of the multipoint displacement meter are all completed.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "a" and "an" and "the" and similar referents used in the specification and claims of the present application are not to be construed to cover any order, quantity, or importance, but rather are used to distinguish between the various components. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
While the exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and adaptations can be made to the above-described specific embodiments and that various combinations of the features and structures can be made without departing from the scope of the present invention as defined in the appended claims.
Claims (10)
1. A multipoint displacement measuring and reading device, comprising:
the left end of the guide rail is connected to the outer cover of the multipoint displacement meter;
the hammer chamber is arranged on the guide rail in a sliding way and is used for driving a small hammer of the multipoint displacement meter to move on the guide rail;
the force marking chamber is arranged on the guide rail in a sliding manner and is fixedly connected to the right end of the hammer chamber, a spring is arranged in the force marking chamber, one end of the spring is fixed with the left side of the force marking chamber, the other end of the spring is connected with a movable baffle plate, a tension marking sheet is connected to the movable baffle plate, and a force reference sheet for comparing with the tension marking sheet is connected to the left side of the force marking chamber;
the left end of the pull rod is connected with the movable baffle; and
and the positioning device is used for controlling the pull rod to move and stop along the axial direction of the guide rail.
2. The multipoint displacement measuring and reading device according to claim 1, wherein the guide rail is an outer tube, grooves or protrusions are axially distributed on the inner wall of the outer tube, and protrusions or grooves matched with the grooves or protrusions on the inner wall of the outer tube are distributed on the outer walls of the hammer chamber and the force marking chamber.
3. The multipoint displacement measuring and reading device according to claim 2, wherein the side wall of the outer tube and the side wall of the hammer chamber are provided with notches for allowing a small hammer to pass through, and the outer tube and the hammer chamber are further provided with gaps for allowing a rope for pulling the small hammer to pass through.
4. A multipoint displacement measuring and reading device according to claim 3, wherein a positioning unit for preventing the small hammer from shaking and deviating is arranged in the hammer chamber, and a reading datum line is arranged at the left end of the hammer chamber.
5. The device according to claim 2, wherein the left end of the outer tube is further provided with a slot for a wire that avoids other points of the multi-point displacement meter.
6. A multipoint displacement measuring and reading device according to any one of claims 2 to 5, wherein the outer tube is provided with a size scale and a size mark.
7. The multi-point displacement measuring and reading device according to any one of claims 2 to 5, wherein the outer tube is made of transparent material, and the inner wall and the outer wall of the outer tube are provided with corresponding coincident size scales and size marks.
8. The multipoint displacement measuring and reading device according to claim 2, wherein the positioning device comprises:
the positioning block is arranged in the outer tube in a sliding manner, the center of the positioning block is provided with an axially through threaded hole, the pull rod is in threaded connection with the threaded hole, the left end of the pull rod is hinged with a connecting rod, so that the connecting rod can not rotate when the pull rod rotates, and the other end of the connecting rod is connected with the movable baffle; and
the positioning hoop is sleeved outside the outer tube in a sliding way and is made of transparent materials;
the positioning hoop is symmetrically provided with a pair of positioning bolt devices, two rows of locking bolt holes are axially symmetrically distributed on the outer tube, the outer wall of the positioning block is provided with a pair of mutually symmetrical bolt holes, the locking bolt holes on the positioning block, the locking bolt holes on the outer tube and the positioning bolt devices are correspondingly arranged, and the positions of the locking bolt holes on the positioning block, the locking bolt holes on the outer tube and the locking bolts of the positioning bolt devices are overlapped by moving the positioning block and the positioning hoop, so that the locking bolts can be inserted into the locking bolt holes and the locking bolt holes at the same time.
9. The multipoint displacement measuring and reading device according to claim 8, wherein the positioning pin device further comprises a button for controlling the pin to be sprung and pressed, and the button is a Push-Push type structure button.
10. The multipoint displacement measuring and reading device according to claim 2, wherein the positioning device comprises a nut gear rotatably arranged at the right end part of the outer tube, a central hole of the nut gear is arranged as a screw hole in threaded connection with a pull rod, the pull rod is hinged with a movable baffle, the movable baffle moves in the axial direction of the outer tube but does not rotate when the pull rod rotates and moves in the axial direction of the outer tube, an outer circular surface of the nut gear is provided as a bevel gear, a driving bevel gear for driving the nut gear to rotate is arranged at the side edge of the nut gear, and a gear shaft of the driving bevel gear is connected with a hand rocker or an automatic driving device.
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| CN115406391B (en) * | 2022-11-01 | 2023-02-28 | 四川中科川信科技有限公司 | Array type deep displacement meter |
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