Portable planometer
The portable level meter addresses the issues of space occupation, spring deformation, and operator requirements by using a limiting member to retract detection bodies and incorporates a laser-based detection module for improved accuracy and durability.
Patent Information
- Application Number
- CN202420196668.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-26
AI Technical Summary
Existing portable leveling instruments require multiple operators, are cumbersome to use, have low accuracy, occupy excessive space when not in use, and suffer from spring deformation and button fall-out issues during transportation.
A portable level meter with a limiting member that retracts detection bodies into a mounting groove when not in use, using a limiting member to maintain a compact form and prevent spring deformation, and includes a detection module with laser emitters and receivers for accurate flatness measurement.
The solution reduces storage space, enhances stability, prevents spring deformation, and increases the service life of the instrument while maintaining high accuracy and ease of use.
Smart Images
Figure CN222166038U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of flatness measuring instruments, in particular to a portable leveling instrument. Background Art
[0002] After the primary and secondary lining support of the tunnel, the lining flatness needs to be tested. Currently, the method of using a level ruler and a scale ruler is commonly used for this purpose. This method requires one person to hold a level ruler close to the shotcrete surface, and another person to hold a scale ruler. The maximum and minimum distances from the level ruler to the shotcrete surface are measured with the scale ruler based on the level ruler and recorded. Finally, the difference between the maximum distance and the minimum distance is the flatness. This method is cumbersome to operate and requires at least two people to operate. The accuracy of manual detection with a scale ruler is also relatively low.
[0003] In order to solve the above technical problems, the existing Chinese utility model patent with authorization announcement number CN208653387U and authorization announcement date March 26, 2019 discloses a detection ruler with displayable flatness readings, which includes a ruler body, a plurality of installation slots are provided on the ruler body along the length direction of the ruler body, a detection button is slidably arranged in the installation slot, a spring is fixedly connected between the detection button and the bottom wall of the installation slot, a sensor for detecting the spring deformation amount is arranged on the button, and a display screen for displaying the flatness difference is arranged on the outer wall of the ruler body. When in use, each button is attached to the surface to be tested. Since the surface to be tested is uneven, the extension amount of each button is also different, and the display screen will directly display the difference between the maximum and minimum extension amounts of each button.
[0004] The above-mentioned detection ruler only needs one person to operate, and the operation process is simpler, and the detection accuracy is also improved. However, when not testing, the springs of the above-mentioned detection ruler will naturally extend to the maximum length, and the extension of each button will also be the maximum, thereby occupying more space and being inconvenient to store; in addition, the buttons of the detection ruler will shake during transportation or transfer, and the springs will frequently expand and contract and deform, affecting their service life. In addition, when the detection ruler shakes significantly, there is a risk that the buttons will easily fall out of the installation slot, thereby causing damage to the detection ruler. Utility Model Content
[0005] The utility model aims to provide a portable level meter to solve the problems in the prior art that when the detection ruler is not being tested, each button will maintain the maximum extension amount, thereby occupying a large space, and the problem that during transportation or transfer, each spring will frequently expand and contract and deform due to shaking, thereby affecting the service life of the detection ruler, and the technical problem that when the detection ruler is shaken significantly, the button has the risk of falling out of the installation slot, thereby causing damage to the detection ruler.
[0006] To achieve the above purpose, the technical solution of the portable level meter provided by the utility model is:
[0007] A portable level meter comprises a shell, a mounting groove is arranged on the shell, a detection body is slidably mounted in the mounting groove, a first elastic member is connected between the detection body and the bottom wall of the mounting groove, a limiting member is mounted on the shell, the limiting member and the shell can be movably or detachably matched, or the limiting member itself can be elastically deformed, so that the limiting member has a limiting state for limiting the detection body when the detection body is retracted into the mounting groove, and the limiting member also has a non-limiting state in which the detection body can be released from the mounting groove by being movable or removed or elastically deformed by itself to release the limiting of the detection body so that the detection body can extend out of the mounting groove.
[0008] As a further improvement, a card slot is provided on the detection body, and the limiting member has an insertion portion for inserting into the card slot. When the insertion portion is inserted into the card slot, the limiting member is in a limiting state, and when the insertion portion is out of the card slot, the limiting member is in a non-limiting state.
[0009] As a further improvement, the inserting portion is a snap-in protrusion located at one end of the limiting member and protruding from the main body of the limiting member, and the limiting member is an "L"-shaped structure as a whole.
[0010] As a further improvement, a transmission shaft is rotatably arranged in the shell, and the limiting member is fixedly connected to the transmission shaft.
[0011] As a further improvement, the transmission shaft is provided with a knob extending out of the housing and used for driving the transmission shaft to rotate.
[0012] As a further improvement, a second elastic member is connected between the housing and the transmission shaft, and the second elastic member is used to deform when the limiting member is in a non-limiting state so as to generate a driving force to drive the limiting member back to the limiting state.
[0013] As a further improvement, a detection module for detecting the length of the detection body extending out of the installation slot is also provided on the housing.
[0014] As a further improvement, the detection module includes a laser emitter and a laser receiver. A reflective plate with a gradually varying reflectivity is fixedly provided on the side wall of the detection body parallel to its movement direction. The laser emitter and the laser receiver are used to detect the reflective plate directly.
[0015] As a further improvement, at least one end of the shell in the length direction is provided with a connection structure for connecting to another portable level meter.
[0016] As a further improvement, the connection structure is a connection seat, and the connection seat is provided with bolt holes for installing bolts.
[0017] The beneficial effect of the portable level meter provided by the utility model is that the portable level meter in the utility model is an improvement over the prior art. When the portable level meter is not in use, each detection body can be pressed back into the installation slot, and the limiting member can be placed in a limiting state. The limiting member can keep the detection body in a retracted state, which can reduce the space occupied by the portable level meter on the one hand, making it easier to store and carry, and on the other hand, can ensure the stability of each detection body and the first elastic member, avoid frequent expansion and contraction deformation of the first elastic member, and avoid the detection body from falling out of the installation slot, thereby increasing the service life of the portable level meter. When using the portable level meter, it is only necessary to place the limiting member in a non-limiting state, and each detection body can pop out to detect the flatness of the wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the portable leveling instrument in the utility model;
[0019] Figure 2 It is a structural schematic diagram of the detection module in the utility model;
[0020] Figure 3 It is a schematic diagram of the relative positions of the detection body and the detection module in the utility model;
[0021] Figure 4 It is a structural schematic diagram of a viewing angle of the detection body in the utility model;
[0022] Figure 5 It is a structural schematic diagram of another viewing angle of the detection body in the utility model;
[0023] Figure 6 It is a schematic diagram of the relative positions of the detection body and the limiting member in the utility model;
[0024] Figure 7 It is a schematic diagram of the combined use of two portable leveling instruments in the utility model;
[0025] Figure 8 This is a diagram of the use status of the portable level meter in the utility model.
[0026] Description of reference numerals:
[0027] 1. Shell; 2. Mounting slot; 3. Detection body; 4. Pressure spring; 5. Mounting shell; 6. Display screen; 7. Warning light; 8. Reflector; 9. Limiting piece; 10. Snap-in protrusion; 11. Slot; 12. Transmission shaft; 13. Knob; 14. Connecting seat. DETAILED DESCRIPTION
[0028] The present invention is further described in detail below in conjunction with the embodiments.
[0029] The utility model reduces the volume of the portable level meter by arranging a limiting member to limit the detection body so as to keep the detection body in a retracted state when not in use, thereby facilitating storage, improving the stability of the detection body and the first elastic member, and prolonging the service life.
[0030] The specific embodiment of the portable level meter provided by the utility model:
[0031] See attached Figure 1 A portable level meter includes a long shell 1, a mounting groove 2 extending along the length direction of the shell 1 is formed, and a plurality of detection bodies 3 are arranged in the mounting groove 2, and the specific number can be set according to needs.
[0032] The detection body 3 is a cuboid made of plastic, and each detection body 3 is closely arranged along the length direction of the installation slot 2. A first elastic member is fixedly connected between the detection body 3 and the bottom wall of the installation slot 2. In this embodiment, the first elastic member is a pressure spring 4. In other embodiments, the first elastic member can also be a rubber block.
[0033] A light-transmitting long hole is provided on one side wall of the housing 1 in the width direction, and a detection module is also provided on this side of the housing 1. Figure 2 and attached Figure 3 The detection module has a mounting shell 5, in which a plurality of groups of laser emitters and laser receivers are arranged. The number and position of the laser emitters and laser receivers correspond to the number and position of the detection objects 3. Figure 4 A reflector 8 is fixedly mounted on one side wall of the detection body 3 facing the detection module. The reflector 8 is coated with a reflective material. The laser emitted by the laser emitter corresponding to the detection body 3 can pass through the light-transmitting long hole to irradiate the reflector 8, and is received by the laser receiver after being reflected by the reflector 8. The reflectivity of the reflective material changes gradually along the moving direction of the detection body 3, so that when the detection body 3 is in different positions, the laser intensity received by the laser receiver is also different.
[0034] The detection module also includes a power supply, a processor, a display screen 6 and an alarm light 7. The display screen 6 and the alarm light 7 are arranged on the outer surface of the mounting shell 5. The laser receiver is electrically connected to the processor. After receiving the laser, the laser receiver converts the light signals of different intensities into electrical signals of different intensities and transmits them to the processor. The processor processes the electrical signals to obtain the position information of the corresponding detection body 3. The processor compares the position information of each detection body 3 and obtains the difference between the maximum value and the minimum value, which is the flatness. The display can display the above-mentioned difference, and the processor compares the difference with the preset value. When the difference is greater than the preset value, the alarm light 7 lights up to alert the measurement personnel.
[0035] A limit member 9 is arranged in the housing 1. The limit member 9 is a plate and corresponds to the detection body 3 one by one. Figure 5 and attached Figure 6 The limiting member 9 is located on the side of the corresponding detection body 3 away from the reflector 8.
[0036] A card slot 11 is provided on the detection body 3, and the depth direction of the card slot 11 is perpendicular to the movement direction of the detection body 3. The limit member 9 has an insertion part for inserting into the card slot 11. When the insertion part is inserted into the card slot 11, the limit member 9 is in a limited state, and when the insertion part is separated from the card slot 11, the limit member 9 is in a non-limited state. The insertion part is a snap-on protrusion 10 located at one end of the limit member 9 and protruding from the main part of the limit member 9. The limit member 9 has an "L" shape structure as a whole.
[0037] A transmission shaft 12 is rotatably arranged in the housing 1, and each of the limiting members 9 is fixedly connected to the transmission shaft 12. A toggle knob 13 protruding from the outer periphery of the transmission shaft 12 is arranged in the middle of the transmission shaft 12, and one end of the toggle knob 13 away from the transmission shaft 12 extends out of the housing 1. The operator can rotate the transmission shaft 12 by toggling the toggle knob 13. A second elastic member is connected between the housing 1 and the transmission shaft 12 to deform when the limiting member 9 is in a non-limiting state, thereby generating a driving force to drive the limiting member 9 back to a limiting state. In this embodiment, the second elastic member is a torsion spring, and a rubber block can also be used in other embodiments.
[0038] One end of the housing 1 in the length direction is provided with a connection structure for connecting to another portable level meter, see the attached Figure 7 In this embodiment, the connection structure is a connection seat 14, and a bolt hole for installing a bolt is provided on the connection seat 14, and the bolt hole is a light hole. After the two portable level meters are connected by bolts, the flatness detection range can be expanded, and the relative angle of the two portable level meters can be changed, which is convenient for the detection personnel to adjust according to the actual situation.
[0039] When the portable level meter is not in use, all the detection objects 3 are pressed into the installation slot 2 so that the snap-in protrusion 10 on the limit member 9 is snapped into the snap-in slot 11. The limit member 9 is in a limited state. At this time, the pressure spring 4 is compressed, which will generate a thrust on the detection object 3. Therefore, the snap-in protrusion 10 and the snap-in slot 11 can be clamped to prevent the detection object 3 from popping out of the installation slot 2.
[0040] See attached Figure 8 When in use, the portable level meter is first placed against a wall, and each detection body 3 faces the wall. Then the detection personnel can turn the dial knob 13, which drives the transmission shaft 12 to rotate and then drives each limiter 9 to rotate, so that the clamping protrusion 10 is disengaged from the clamping slot 11, and the limiter 9 is in a non-limiting state. At this time, each detection body 3 will pop out of the installation slot 2 and press against the wall under the push of the pressure spring 4. Since the wall surface is uneven, the length of each detection body 3 extending out of the installation slot 2 is also different.
[0041] After the measurement is completed, the operator can read the difference between the highest point and the lowest point of the wall surface from the display screen 6 to obtain the flatness value. Finally, the operator presses each detection body 3 back into the installation groove 2, and the clamping protrusion 10 on the limiter 9 is clamped into the clamping groove 11 again.
[0042] After the measurement is completed, the limit member 9 is in a limited state, thereby preventing the detection bodies 3 from extending freely. On the one hand, it can reduce the space occupied by the portable level meter, making it easier to store and carry. On the other hand, it can ensure the stability of the detection bodies and the first elastic member, avoid frequent expansion and contraction deformation of the first elastic member, and prevent the detection bodies from falling out of the mounting groove, thereby increasing the service life of the portable level meter.
[0043] In other embodiments, the detection module may also have other forms, for example, a sensor for detecting spring deformation in the Chinese utility model patent with authorization announcement number CN208653387U may be used.
[0044] In other embodiments, the detection module may not be provided. In this embodiment, scales may be provided on the side wall of the detection body, and the detection personnel may read the values on each scale in turn.
[0045] In other embodiments, the connection structure may also have other forms, for example, a plug may be provided at one end of the portable level meter and a socket may be provided at the other end. When in use, the plug on one portable level meter may be inserted into the socket on another portable level meter to achieve mutual connection.
[0046] In other embodiments, the connection structure may not be provided, and each portable level meter may be used independently.
[0047] In other embodiments, the knob can be arranged at the end of the transmission shaft and be coaxial with the transmission shaft, and the inspector can rotate the transmission shaft by twisting the knob. The second elastic member may not be arranged. In this embodiment, the compression of the pressure spring will generate thrust on the detection body, so the clamping protrusion and the clamping groove can be clamped tightly. However, when the detection body is pressed back into the installation groove after use, the knob needs to be manually turned in the opposite direction to re-insert the clamping protrusion into the clamping groove.
[0048] In other embodiments, a transmission shaft may not be provided. In this embodiment, a slide groove is formed on the shell, and the limit member is located in the slide groove and slides in a direction perpendicular to the movement direction of the detection body. In this embodiment, the end of the limit member close to the detection body constitutes an insertion portion. After the detection personnel pulls the limit member out of the slot, each detection body can pop out. After pressing each detection body back into the installation slot and reinserting the limit member into the slot, the detection body can be stably maintained in the installation slot.
[0049] In other embodiments, the limiter can also be a cover body, which can be buckled onto the housing and connected to the housing by means of buckles or bolts. When the cover body is buckled onto the housing, it will press each detection body so that each detection body retracts into the installation groove. After the cover body is buckled onto the housing, it is in a limited state. When it is needed, the cover body can be removed from the housing. At this time, the cover body is in a non-limited state, and each detection body can be freely ejected for flatness detection.
[0050] In this embodiment, the number and position of the limiting members correspond to the detection bodies one by one. In other embodiments, the slot may be a through slot, and a limiting member may be arranged between two detection bodies, so that one limiting member is used to limit the two detection bodies. Alternatively, only one limiting member is arranged to limit all detection bodies.
[0051] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A portable level meter, comprising a housing, a mounting groove being provided on the housing, a detection body being slidably mounted in the mounting groove, a first elastic member being connected between the detection body and the bottom wall of the mounting groove, Its characteristics are: A limit piece is installed on the shell, and the limit piece and the shell can be movably or detachably matched, or the limit piece itself can be elastically deformed, so that the limit piece has a limiting state for limiting the detection body when the detection body is retracted into the installation groove, and the limit piece also has a non-limiting state in which the detection body is released by being movable or removed or elastically deforming itself so that the detection body can extend out of the installation groove.
2. The portable level meter according to claim 1, Its characteristics are: A card slot is arranged on the detection body, and the limiting member has an inserting portion for inserting into the card slot. When the inserting portion is inserted into the card slot, the limiting member is in a limiting state, and when the inserting portion is separated from the card slot, the limiting member is in a non-limiting state.
3. The portable level meter according to claim 2, Its characteristics are: The inserting portion is a clamping protrusion located at one end of the limiting member and protruding from the main body of the limiting member, and the limiting member is an "L"-shaped structure as a whole.
4. The portable level meter according to claim 3, Its characteristics are: A transmission shaft is rotatably arranged in the shell, and the limiting member is fixedly connected to the transmission shaft.
5. The portable level meter according to claim 4, Its characteristics are: The transmission shaft is provided with a knob extending out of the housing and used for driving the transmission shaft to rotate.
6. The portable level meter according to claim 4 or 5, Its characteristics are: A second elastic member is connected between the housing and the transmission shaft. The second elastic member is used to deform when the limiting member is in a non-limiting state so as to generate a driving force for driving the limiting member to return to the limiting state.
7. The portable level meter according to any one of claims 1 to 5, Its characteristics are: The shell is also provided with a detection module for detecting the length of the detection body extending out of the installation slot.
8. The portable level meter according to claim 7, Its characteristics are: The detection module includes a laser transmitter and a laser receiver. A reflective plate with a gradually changing reflectivity is fixedly arranged on the side wall of the detection body parallel to its moving direction. The laser transmitter and the laser receiver are used to detect the reflective plate directly.
9. The portable level meter according to any one of claims 1 to 5, Its characteristics are: At least one end of the shell in the length direction is provided with a connection structure for connecting with another portable level meter.
10. The portable level meter according to claim 9, Its characteristics are: The connection structure is a connection seat, and the connection seat is provided with bolt holes for installing bolts.