A measuring scale for engineering supervision

Abstract

The utility model provides a measuring scale for engineering supervision, include: a pair of box body, a pair of locking mechanism, a pair of limiting mechanism and caliper, a pair of box body are respectively through a pair of locking mechanism sliding and locking ground installation in the both ends of caliper, a pair of limiting mechanism are respectively installed in a pair of box body and the junction of caliper. The caliper is inserted in the box body, so that the caliper is not easily deformed and bent, which is beneficial to the protection of the caliper. The length of the caliper can be changed according to the requirements, which is beneficial to the measurement in different positions. It is convenient to carry, and the effect of suitable for various length measurement is achieved. The caliper can be completely inserted in the box body through the two box bodies, so that the caliper is not easily bent and deformed, which is beneficial to better protection of the caliper.

Description

Technical Field

[0001] This utility model relates to the field of measuring ruler technology, and in particular to a measuring ruler for engineering supervision. Background Technology

[0002] With the development of cities, construction projects are gradually increasing. During the construction phase, it is necessary to control the quality, cost, and progress of construction projects. In order to ensure the building's composite design standards, project supervisors usually need to use measuring rulers for measurement.

[0003] The existing measuring rulers are mainly straightedges, which are attached to the measuring position by the supervisor for reading. Since there are many positions to be measured, and the length and width of different positions are different, when measuring some narrow positions, the length of the straightedge is too long to be close enough to be measured, so a small-sized straightedge is selected for measurement. When measuring long positions, the length of the small-sized straightedge is not enough, so a large-sized straightedge needs to be replaced.

[0004] The existing technical solutions mentioned above have the following drawbacks: depending on the measurement location, supervisors need to carry rulers of various lengths. Large rulers are inconvenient to carry due to their excessive length, and they are also prone to bending due to their excessive length, resulting in inaccurate measurement values.

[0005] Existing patent CN210441761U discloses a measuring ruler for construction engineering supervision, relating to the technical field of auxiliary tools for construction engineering supervision. It includes a vertical ruler, a horizontal ruler, and a telescopic ruler. The top of the vertical ruler is fixedly connected to the left end of the horizontal ruler. A set of spirit levels is fixedly installed on the front surface of the horizontal ruler. The bottom end of the vertical ruler has a cylindrical storage slot, and a set of threaded posts for sealing the bottom opening of the storage slot is provided at the bottom end of the vertical ruler. The circumferential surface of the threaded posts is threadedly connected to the inner circumferential wall of the storage slot. A set of drawing tools is provided inside the storage slot. The right end of the horizontal ruler has a cuboid sliding groove, and the left end of the telescopic ruler is inserted into the sliding groove. The lower surface of the telescopic ruler has a cuboid limiting groove. This measuring ruler for construction engineering supervision has the advantages of simple structure and ease of use, and can be widely promoted and used. The principle of the existing patent is that the left end of the telescopic ruler is inserted into the sliding groove of the horizontal ruler. The lower surface of the telescopic ruler has a cuboid limiting groove. A set of fixing bolts is set on the lower surface of the vertical ruler away from the vertical ruler. The top of the fixing bolts is inserted into the limiting groove. The length of the telescopic ruler extending to the right is adjusted by moving the telescopic ruler left and right, thereby changing the measuring range of the horizontal ruler and the telescopic ruler. The structural design is simple and ingenious, and easy to use. A storage slot is added to the bottom of the vertical ruler. The storage slot is sealed by an added threaded post. A set of grooves is opened on the top surface of the threaded post in the storage slot. The bottom end of the drawing tool is inserted into the groove, so that the drawing tool can be carried together with the measuring ruler, making it convenient for staff to access the drawing tool at any time. The structural design is reasonable and more convenient to use. However, the total length of the existing patent is limited to the total length of the telescopic ruler, the horizontal ruler, and the vertical ruler. As a result, depending on the measurement location, the supervisors of the existing patent need to carry various lengths of measuring rulers for construction engineering supervision. The horizontal and vertical rulers are set vertically, which takes up a lot of space and is not convenient to carry. Moreover, because the telescopic ruler, the horizontal ruler, and the vertical ruler are too long, they are also easy to bend, which makes the measurement values ​​inaccurate.

[0006] Existing patent 2, CN216898579U, discloses a measuring ruler for construction supervision, comprising a telescopic measuring ruler structure consisting of an outer ruler sleeve and an inner ruler plate disposed on its inner side. The telescopic measuring ruler structure includes an auxiliary measuring structure, comprising two docking adjustment brackets slidably mounted inside the outer ruler sleeve, threaded adjustment rods and a steering adjustment sleeve respectively movably connected to the two docking adjustment brackets, a mounting base fixedly mounted on the outer surface of the outer ruler sleeve, and small control boxes and distance sensors respectively fixedly connected to the outer walls on both sides of the mounting base. This measuring ruler for construction supervision allows for telescopic and angle-adjustable measurements of short distances. Furthermore, when longer distance measurements are required, the distance sensor can be activated for long-distance detection. Its structure is simple and easy to use, thus solving the problems of existing measuring rulers having a single measurement method and a short measurement range, making them difficult to widely apply. The principle of the existing patent 2 is that the inner ruler plate can be stretched and adjusted by removing the limiting sleeve, so that it can cooperate with the outer ruler sleeve to measure shorter measurement points. The measurement angle can be adjusted by the docking adjustment bracket. Furthermore, when measuring points over longer distances, the distance sensor can be activated by a control switch for detection. This measuring ruler has a simple structure and is easy to use, effectively solving the problems of existing measuring rulers having a single measurement method and a short measurement range, making them difficult to widely apply. However, the total length of the existing patent 2 is limited to the total length of the outer ruler sleeve and the inner ruler plate. This means that depending on the measurement location, supervisors need to carry various lengths of building supervision measuring rulers. The outer ruler sleeve and inner ruler plate are placed side by side, occupying a large space and being inconvenient to carry. Moreover, the excessive length of the outer ruler sleeve and inner ruler plate makes them prone to bending, leading to inaccurate measurement values.

[0007] Existing patent three, CN218673410U, discloses a portable measuring ruler for engineering supervision, including a measuring ruler body, a marker, and a locator. The top of the measuring ruler body is equipped with a scale, and a groove is provided on the top of the measuring ruler body. A sliding block is installed on the inner wall of the groove, and a locator is installed on the inner wall of the measuring ruler body. This utility model, by installing a marker, allows for rapid marking of inspection locations when needed. When marking a measurement location, pushing the marker moves the sliding block. As the sliding block moves horizontally along the outer wall of the sliding rod, the marker can move horizontally. After the marker moves to one side of the location to be marked, it pushes the rod to move, which in turn moves the marking head. After one end of the marking head moves to the marking location, a marking mark is left at the marking location, eliminating the need for other tools to mark the inspection location, thus achieving the purpose of auxiliary marking of the inspection location. The principle of the existing patent three is that by installing a marker, it can quickly mark the test location when it is necessary to mark it. When the engineering supervisor uses the measuring ruler to test the construction site, and needs to mark the measurement position, he pushes the marker to move the sliding block. When the sliding block moves horizontally on the outer wall of the sliding rod, the marker can move horizontally. After the marker moves to one side of the location to be marked, it pushes the rod to move. The movement of the rod moves the marking head. After one end of the marking head moves to the marking location, it can leave a marking mark at the marking location. There is no need to use other tools to mark the test location, thus achieving the purpose of auxiliary marking of the test location. The installation of a locator facilitates the positioning of the measuring ruler. When the engineering supervisor needs to perform long-term measurements and inspections at a specific location using the measuring ruler, one side of the outer wall of the measuring ruler is aligned with the measurement location. Rotating the threaded screw moves the threaded sleeve, causing one side of the positioning suction cup to move out of the storage groove. After moving out of the storage groove, the positioning suction cup is pressed against the wall, thus fixing the position of the measuring ruler. This achieves the purpose of fixing the position of the measuring ruler, eliminating the need for the user to hold the measuring ruler continuously during long-term inspections and preventing damage to the outer wall of the measuring ruler due to constant shaking. However, the total length of the existing patent 3 is limited by the total length of the measuring ruler itself. This means that supervisors need to carry various lengths of portable measuring rulers depending on the measurement location. The horizontal measuring ruler takes up a lot of space, making it inconvenient to carry, and its excessive length also makes it prone to bending, leading to inaccurate measurements. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a measuring ruler for engineering supervision, which addresses the shortcomings of the existing technology.

[0009] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A measuring ruler for engineering supervision includes: a pair of housings, a pair of locking mechanisms, a pair of limiting mechanisms, and calipers. The pair of housings are respectively slidably and locked at both ends of the calipers through the pair of locking mechanisms. The pair of limiting mechanisms are respectively installed at the connection between the pair of housings and the calipers.

[0010] The beneficial effects of adopting this utility model's technical solution are: inserting the caliper into the box prevents it from easily deforming or bending, thus protecting it. The length of the caliper can be changed according to needs, facilitating measurements at different positions. It is easy to carry and achieves the effect of being suitable for measuring various lengths. The two boxes allow the caliper to be fully inserted, preventing it from bending or deforming and providing better protection.

[0011] Furthermore, the box body includes a base plate and a lid. The upper surface of the base plate has a storage groove. The lid is connected to the base plate. The end of the storage groove adjacent to the caliper is an open end. Both ends of the caliper are slidably installed in the storage groove.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are: inserting the caliper into the storage slot prevents it from easily deforming or bending, thus protecting it. The storage slot is then sealed by the lid, further protecting the caliper inside.

[0013] Furthermore, the base plate has a rectangular structure, the storage slot is arranged along the length of the base plate, the length of the storage slot is less than the length of the base plate, and the other end of the storage slot is a closed end.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: it facilitates the insertion of the calipers into the case, preventing the calipers from easily deforming or bending, thus protecting them. It is also easy to carry and achieves the effect of being suitable for measuring a variety of lengths.

[0015] Furthermore, a first scale is engraved on both sides of the lower surface of the base plate along its length. The first scale starts from the open end of the storage slot and extends along the length of the lower surface of the base plate to the closed end of the storage slot. A second scale is engraved on one side of the box body, starting from the end of the box body adjacent to the caliper and extending along the length of the box body. A third scale is engraved on the upper surface of the caliper away from the storage slot.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: measurement is performed using the scale on the calipers, and the length of the calipers can be changed according to needs, facilitating measurement in different positions. This achieves the effect of being applicable to various length measurements. During measurement, the measurement range can be increased by using the second scale on the calipers in conjunction with the second scale on the side wall of the box, which is beneficial for measuring excessively long lengths. In locations with limited space, measurement can be performed directly through the first scale engraved on the bottom of the box, further enhancing the practicality of the measuring ruler.

[0017] Furthermore, the first scale, the second scale, and the third scale are scales of the same specification, the smallest unit of measurement for the first scale, the second scale, and the third scale is millimeter, and integers are engraved at every 10 millimeters in the first scale, the second scale, and the third scale.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first, second, and third scales are of the same specification, with the smallest measuring unit being millimeters. Integer graduations are marked every 10 millimeters, thus facilitating accurate measurement of the length of the position to be measured. When the limiting pin is inserted into the limiting hole, the integer graduation of the third scale is flush with the end face of the opening of the storage slot. Therefore, when the two boxes are unfolded and the calipers are exposed, the integer graduation of the first scale can be aligned with the integer graduation of the third scale, facilitating measurement and calculation.

[0019] Furthermore, the caliper is a strip ruler with a width smaller than the width of the storage slot, the thickness of the caliper is equal to the depth of the storage slot, and the length of the caliper is equal to the sum of the lengths of the storage slots in the two boxes.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are: the two housings allow the calipers to be fully inserted, making them less prone to bending and deformation, thus providing better protection. It also facilitates portability and achieves applicability to various length measurements.

[0021] Furthermore, the box cover is a strip plate adapted to the base plate. The upper surface of the base plate has screw holes, and the box cover has fixing holes. The side of the fixing hole away from the storage groove is a chamfered opening. The fixing hole and the screw holes are connected by bolts. The length of the bolt is less than the thickness of the box body. The nut of the bolt is located in the fixing hole, and the flat end of the nut of the bolt is flush with the upper surface of the box cover.

[0022] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The calipers are inserted into the storage slot, and the storage slot is sealed by the cover, which helps to protect the calipers inside. The cover and the base plate are connected by bolts, which facilitates the installation and maintenance of the cover and the base plate. This simplifies the structure and reduces costs. The chamfered holes ensure that the flat end of the bolt nut is flush with the upper surface of the cover. This prevents the bolt nut from obstructing the measurement work, making it easier for the project supervisor to use the measuring ruler to contact the object being measured, thus improving measurement accuracy.

[0023] Furthermore, the limiting mechanism includes a limiting block and a blocking block. The limiting block is installed on one end of the housing adjacent to the caliper, and the end of the limiting block adjacent to the caliper is flush with the end of the housing adjacent to the caliper. The blocking block is installed on the end of the caliper, and the blocking block protrudes from both sides of the caliper. The limiting block is located on the sliding trajectory of the blocking block.

[0024] The beneficial effects of adopting the above-mentioned further technical solution are: when the caliper is pulled out of the storage slot, the limiting block ensures that the caliper can be pulled out horizontally without wobbling, which is beneficial for accurate measurements. When using the measuring scale, the caliper is pulled out of the storage slot. When it is pulled out to its maximum length, the blocking block and the limiting block engage, preventing the caliper from detaching from the box. The engagement of the limiting box and the limiting block increases the range of motion of the caliper, allowing for a greater change in the length of the measuring scale.

[0025] Furthermore, the locking mechanism includes a limiting box and a limiting pin. The limiting box is installed at one end of the box body adjacent to the caliper. The end of the limiting box adjacent to the caliper is flush with the end of the box body adjacent to the caliper. A plurality of limiting holes are provided on one side of the caliper. The limiting pin is slidably installed in the limiting box. One end of the limiting pin passes through the limiting box and is exposed on the outside. The other end of the limiting pin passes through the limiting box and the box body and is exposed on the outside. When the relative position of the caliper and the box body is locked, one end of the limiting pin is located in the limiting hole.

[0026] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When in use, the caliper is pulled out of the storage slot, adjusted to a suitable length, and then one end of the limiting pin is inserted into the limiting hole to fix the caliper, ensuring that the length of the caliper is fixed and will not easily change, making it easier to operate during use. The fit between the limiting box and the limiting block increases the range of motion of the caliper, facilitating a greater changeable length for the measuring scale.

[0027] Furthermore, the limiting box is provided with an installation hole, and the side wall of the box is provided with a through hole, and the limiting pin is slidably installed in the installation hole and the through hole.

[0028] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The installation hole and through hole facilitate the insertion or removal of one end of the limiting pin into or from the limiting hole, thus facilitating the locking and unlocking of the relative position of the caliper and the housing. The other end of the limiting pin protrudes from the housing, making it easier for the user to operate the limiting pin to lock and unlock the relative position of the caliper and the housing. This facilitates operation, improves user experience, simplifies the structure, and reduces costs.

[0029] Furthermore, a spring and a limiting ring are fitted onto the limiting pin. The spring and the limiting ring are both installed in the limiting box. The limiting ring is fixedly connected to the limiting pin. The two ends of the spring abut against the limiting ring and the box body, respectively.

[0030] The beneficial effects of adopting the above-mentioned further technical solution are: when using the caliper, pull it out of the storage slot, and after adjusting it to a suitable length, the extended spring will automatically insert one end of the limiting pin into the limiting hole to fix the caliper, so that the length of the caliper is fixed and will not easily change, making it easier to operate when using it.

[0031] Furthermore, the length of the limiting pin is greater than the length of the limiting box, the diameter of the limiting pin is the same as the diameter of the mounting hole, the inner diameter of the limiting ring is the same as the diameter of the limiting pin, the outer diameter of the limiting ring is smaller than the inner width of the limiting box, and the length of the spring is less than the length of the limiting box; the spring is a compression spring; a plurality of limiting holes are equally spaced along the length direction of the caliper, and the depth of the limiting hole is equal to the length of one end of the limiting pin exposed on the outside.

[0032] The beneficial effects of adopting the above-mentioned further technical solution are: when using the caliper, pull it out of the storage slot, and after adjusting it to a suitable length, the extended spring will automatically insert one end of the limiting pin into the limiting hole to fix the caliper, so that the length of the caliper is fixed and will not easily change, making it easier to operate when using it.

[0033] The advantages of this invention in its additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1This is one of the structural schematic diagrams of the measuring ruler for engineering supervision provided in the embodiments of this utility model.

[0036] Figure 2 The second schematic diagram of the structure of the measuring ruler for engineering supervision provided in this embodiment of the utility model.

[0037] Figure 3 The third schematic diagram of the structure of the measuring ruler for engineering supervision provided in this embodiment of the utility model.

[0038] Figure 4 The fourth schematic diagram of the structure of the measuring ruler for engineering supervision provided in this embodiment of the utility model.

[0039] Explanation of reference numerals in the attached diagram: 1. Box body; 11. Base plate; 111. First scale; 112. Second scale; 12. Storage slot; 121. Screw hole; 13. Limiting block; 14. Limiting box; 141. Limiting pin; 142. Spring; 143. Limiting ring; 2. Caliper; 21. Blocking block; 22. Limiting hole; 23. Third scale; 3. Box cover; 31. Fixing hole; 32. Bolt. Detailed Implementation

[0040] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] like Figures 1 to 4 As shown, this utility model embodiment provides a measuring ruler for engineering supervision, including: a pair of housings 1, a pair of locking mechanisms, a pair of limiting mechanisms, and calipers 2. The pair of housings 1 are respectively slidably and locked at both ends of the calipers 2 through the pair of locking mechanisms, and the pair of limiting mechanisms are respectively installed at the connection between the pair of housings 1 and the calipers 2.

[0047] The beneficial effects of adopting this utility model's technical solution are: inserting the caliper into the box prevents it from easily deforming or bending, thus protecting it. The length of the caliper can be changed according to needs, facilitating measurements at different positions. It is easy to carry and achieves the effect of being suitable for measuring various lengths. The two boxes allow the caliper to be fully inserted, preventing it from bending or deforming and providing better protection.

[0048] like Figures 1 to 4 As shown in the figure, the present invention provides a measuring ruler for engineering supervision, including a box body 1 and a caliper 2. The box body 1 includes a base plate 11 and a limiting box 14. A storage groove 12 is provided on the upper surface of the base plate 11 along the length direction of the base plate 11. The length of the storage groove 12 is less than the length of the base plate 11. The storage groove 12 has an opening at one end of the base plate 11 and a closed end at the other end.

[0049] The limiting box 14 is fixed to the inner wall of the storage groove 12. Limiting pins 141 are movably provided on opposite ends of the limiting box 14, with one end located outside the side wall of the base plate 11. A limiting ring 143 is sleeved and fixed on the limiting pin 141, and the limiting ring 143 is located inside the limiting box 14. A spring 142 is also sleeved on the limiting pin 141, and the spring 142 is located on the side of the limiting ring 143 near the end of the limiting pin 141 that extends outside the base plate 11. The spring 142 is in an extended state, and its two ends abut against the limiting ring 143 and the inner wall of one end of the limiting box 14, respectively.

[0050] The caliper 2 is movably installed in the storage slot 12 and located at the opening end of the storage slot 12. The width of the caliper 2 is smaller than the width of the storage slot 12. Multiple limiting holes 22 are equally spaced along the length direction of the caliper 2 on the side wall near the limiting box 14, and the limiting pin 141 can be inserted into the limiting hole 22.

[0051] By adopting the above technical solution, the calipers are inserted into the storage slot, preventing them from easily deforming or bending, thus protecting them. In use, the calipers are pulled out of the storage slot, adjusted to the appropriate length, and then the extended spring automatically inserts one end of the limiting pin into the limiting hole to fix the calipers in place. This ensures the calipers' length remains constant and is easier to operate. Measurements are then taken through the third scale on the calipers, allowing the length to be adjusted as needed, facilitating measurements at different locations. This achieves the effect of being suitable for measuring a variety of lengths.

[0052] The box body 1 is provided with a box cover 3 that is equal in length and width to the box body 1, and the box cover 3 is placed on the opening of the storage slot 12.

[0053] By adopting the above technical solution, the calipers are inserted into the storage slot, and the storage slot is sealed by the box cover, which helps to protect the calipers inside the storage slot.

[0054] The storage slot 12 is provided with a limiting block 13, which is fixedly installed on the inner wall of the opening end of the storage slot 12. The limiting block 13 and the limiting box 14 are respectively located on the two inner walls of the opening end of the storage slot 12 and are spaced apart. The end face of the limiting block 13 is in contact with the opposite side wall of the caliper 2.

[0055] By adopting the above technical solution, the caliper can be pulled out horizontally without wobbling when it is pulled out of the storage slot by the limiting block, which is conducive to accurate measurement.

[0056] The caliper 2 has a blocking block 21 fixedly installed on the side wall at both ends along its length. The blocking block 21 is slidably installed in the storage groove 12, and the end face of the blocking block 2 away from the caliper 2 is in contact with the inner wall of the storage groove 12. The two blocking blocks 21 can simultaneously abut against the limiting box 14 and the limiting block 13.

[0057] By adopting the above technical solution, when using the measuring ruler, the caliper is pulled out of the storage slot. When it is pulled out to its maximum length, the blocking block and the limiting block fit together, so that the caliper will not come out of the box.

[0058] The box 1 has two compartments, and the length of the two storage slots 12 is equal to the length of the caliper 2.

[0059] By adopting the above technical solution, the calipers can be fully inserted into the two boxes, making them less prone to bending and deformation, and thus better protecting them.

[0060] The outer surfaces of the limiting block 13 and the limiting box 14 facing the opening of the storage groove 12 are flush with the end face of the opening end of the storage groove 12.

[0061] By adopting the above technical solution, the fit between the limit box and the limit block increases the range of motion of the caliper, which is beneficial to increasing the length that the measuring scale can change.

[0062] On the outer wall of the base plate 11 away from the limiting box 14, a second scale 112 is engraved along its length starting from the opening end of the storage groove 12.

[0063] By adopting the above technical solution, the measuring range of the measuring ruler can be increased by using the second scale on the caliper in conjunction with the second scale opened on the side wall of the box during measurement, which is beneficial for measuring positions with excessive length.

[0064] The lower surface of the base plate 11 is engraved with a first scale 111, which extends from the opening end of the storage groove 12 along the length of the lower surface of the base plate 11 to the closed end of the storage groove 12.

[0065] By adopting the above technical solution, when measuring in a small space, measurements can be taken directly through the first scale engraved on the bottom of the box, making the measuring ruler more practical.

[0066] like Figures 1 to 4 As shown, the box body 1 further includes a base plate 11 and a lid 3. The upper surface of the base plate 11 is provided with a storage groove 12. The lid 3 is connected to the base plate 11. The end of the storage groove 12 adjacent to the caliper 2 is an open end. The two ends of the caliper 2 are slidably installed in the storage groove 12.

[0067] The beneficial effects of adopting the above-mentioned further technical solution are: inserting the caliper into the storage slot prevents it from easily deforming or bending, thus protecting it. The storage slot is then sealed by the lid, further protecting the caliper inside.

[0068] like Figures 1 to 4As shown, the base plate 11 is rectangular, the storage groove 12 is arranged along the length of the base plate 11, the length of the storage groove 12 is less than the length of the base plate 11, and the other end of the storage groove 12 is a closed end.

[0069] The beneficial effects of adopting the above-mentioned further technical solution are: it facilitates the insertion of the calipers into the case, preventing the calipers from easily deforming or bending, thus protecting them. It is also easy to carry and achieves the effect of being suitable for measuring a variety of lengths.

[0070] like Figures 1 to 4 As shown, further, the bottom plate 11 has a first scale 111 engraved on both sides of the lower plate surface along the length direction. The first scale 111 starts from the open end of the storage groove 12 and extends along the lower plate surface of the bottom plate 11 to the closed end of the storage groove 12. The box body 1 has a second scale 112 engraved on one side, starting from the end of the box body 1 adjacent to the caliper 2 and extending along the length direction of the box body 1. The caliper 2 has a third scale 23 engraved on the upper surface away from the storage groove 12.

[0071] The beneficial effects of adopting the above-mentioned further technical solution are: measurement is performed using the scale on the calipers, and the length of the calipers can be changed according to needs, facilitating measurement in different positions. This achieves the effect of being applicable to various length measurements. During measurement, the measurement range can be increased by using the second scale on the calipers in conjunction with the second scale on the side wall of the box, which is beneficial for measuring excessively long lengths. In locations with limited space, measurement can be performed directly through the first scale engraved on the bottom of the box, further enhancing the practicality of the measuring ruler.

[0072] like Figures 1 to 4 As shown, the first scale 111, the second scale 112 and the third scale 23 are scales of the same specification. The smallest measuring unit of the first scale 111, the second scale 112 and the third scale 23 is millimeters. Integers are engraved at every 10 millimeters in the first scale 111, the second scale 112 and the third scale 23.

[0073] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first, second, and third scales are of the same specification, with the smallest measuring unit being millimeters. Integer graduations are marked every 10 millimeters, thus facilitating accurate measurement of the length of the position to be measured. When the limiting pin is inserted into the limiting hole, the integer graduation of the third scale is flush with the end face of the opening of the storage slot. Therefore, when the two boxes are unfolded and the calipers are exposed, the integer graduation of the first scale can be aligned with the integer graduation of the third scale, facilitating measurement and calculation.

[0074] like Figures 1 to 4As shown, the caliper 2 is a strip ruler with a width smaller than the width of the storage slot 12, the thickness of the caliper 2 is equal to the depth of the storage slot 12, and the length of the caliper 2 is equal to the sum of the lengths of the storage slots 12 in the two boxes 1.

[0075] The beneficial effects of adopting the above-mentioned further technical solution are: the two housings allow the calipers to be fully inserted, making them less prone to bending and deformation, thus providing better protection. It also facilitates portability and achieves applicability to various length measurements.

[0076] like Figures 1 to 4 As shown, the box cover 3 is a strip plate adapted to the base plate 11. The upper surface of the base plate 11 is provided with a screw hole 121, and the box cover 3 is provided with a fixing hole 31. The side of the fixing hole 31 away from the storage groove 12 is a chamfered opening. The fixing hole 31 and the screw hole 121 are connected by a bolt 32. The length of the bolt 32 is less than the thickness of the box body 1. The nut of the bolt 32 is located in the fixing hole 31, and the flat end of the nut of the bolt 32 is flush with the upper surface of the box cover 3.

[0077] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The calipers are inserted into the storage slot, and the storage slot is sealed by the cover, which helps to protect the calipers inside. The cover and the base plate are connected by bolts, which facilitates the installation and maintenance of the cover and the base plate. This simplifies the structure and reduces costs. The chamfered holes ensure that the flat end of the bolt nut is flush with the upper surface of the cover. This prevents the bolt nut from obstructing the measurement work, making it easier for the project supervisor to use the measuring ruler to contact the object being measured, thus improving measurement accuracy.

[0078] like Figures 1 to 4 As shown, the limiting mechanism further includes a limiting block 13 and a blocking block 21. The limiting block 13 is installed at one end of the housing 1 adjacent to the caliper 2, and the end of the limiting block 13 adjacent to the caliper 2 is flush with the end of the housing 1 adjacent to the caliper 2. The blocking block 21 is installed at the end of the caliper 2, and the blocking block 21 protrudes from both sides of the caliper 2. The limiting block 13 is located on the sliding trajectory of the blocking block 21.

[0079] The beneficial effects of adopting the above-mentioned further technical solution are: when the caliper is pulled out of the storage slot, the limiting block ensures that the caliper can be pulled out horizontally without wobbling, which is beneficial for accurate measurements. When using the measuring scale, the caliper is pulled out of the storage slot. When it is pulled out to its maximum length, the blocking block and the limiting block engage, preventing the caliper from detaching from the box. The engagement of the limiting box and the limiting block increases the range of motion of the caliper, allowing for a greater change in the length of the measuring scale.

[0080] like Figures 1 to 4As shown, the locking mechanism further includes a limiting box 14 and a limiting pin 141. The limiting box 14 is installed at one end of the box body 1 adjacent to the caliper 2. The end of the limiting box 14 adjacent to the caliper 2 is flush with the end of the box body 1 adjacent to the caliper 2. A plurality of limiting holes 22 are provided on one side of the caliper 2. The limiting pin 141 is slidably installed in the limiting box 14. One end of the limiting pin 141 passes through the limiting box 14 and is exposed on the outside. The other end of the limiting pin 141 passes through the limiting box 14 and the box body 1 and is exposed on the outside. When the relative position of the caliper 2 and the box body 1 is locked, one end of the limiting pin 141 is located in the limiting hole 22.

[0081] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When in use, the caliper is pulled out of the storage slot, adjusted to a suitable length, and then one end of the limiting pin is inserted into the limiting hole to fix the caliper, ensuring that the length of the caliper is fixed and will not easily change, making it easier to operate during use. The fit between the limiting box and the limiting block increases the range of motion of the caliper, facilitating a greater changeable length for the measuring scale.

[0082] like Figures 1 to 4 As shown, the limiting box 14 is further provided with an installation hole, and the side wall of the box body 1 is provided with a through hole. The limiting pin 141 is slidably installed in the installation hole and the through hole.

[0083] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The installation hole and through hole facilitate the insertion or removal of one end of the limiting pin into or from the limiting hole, thus facilitating the locking and unlocking of the relative position of the caliper and the housing. The other end of the limiting pin protrudes from the housing, making it easier for the user to operate the limiting pin to lock and unlock the relative position of the caliper and the housing. This facilitates operation, improves user experience, simplifies the structure, and reduces costs.

[0084] like Figures 1 to 4 As shown, further, a spring 142 and a limiting ring 143 are sleeved on the limiting pin 141. The spring 142 and the limiting ring 143 are both installed in the limiting box 14. The limiting ring 143 is fixedly connected to the limiting pin 141. The two ends of the spring 142 abut against the limiting ring 143 and the box body 1, respectively.

[0085] The beneficial effects of adopting the above-mentioned further technical solution are: when using the caliper, pull it out of the storage slot, and after adjusting it to a suitable length, the extended spring will automatically insert one end of the limiting pin into the limiting hole to fix the caliper, so that the length of the caliper is fixed and will not easily change, making it easier to operate when using it.

[0086] like Figures 1 to 4As shown, further, the length of the limiting pin 141 is greater than the length of the limiting box 14, the diameter of the limiting pin 141 is the same as the diameter of the mounting hole, the inner diameter of the limiting ring 143 is the same as the diameter of the limiting pin 141, the outer diameter of the limiting ring 143 is smaller than the inner width of the limiting box 14, and the length of the spring is smaller than the length of the limiting box 14; the spring 142 is a compression spring; a plurality of limiting holes 22 are equally spaced along the length direction of the caliper 2, and the depth of the limiting hole 22 is equal to the length of one end of the limiting pin 141 exposed on the outside.

[0087] The beneficial effects of adopting the above-mentioned further technical solution are: when using the caliper, pull it out of the storage slot, and after adjusting it to a suitable length, the extended spring will automatically insert one end of the limiting pin into the limiting hole to fix the caliper, so that the length of the caliper is fixed and will not easily change, making it easier to operate when using it.

[0088] This utility model relates to the field of measuring ruler technology, and in particular to a measuring ruler for engineering supervision, comprising a housing and calipers. The housing includes a base plate and a limiting box. A storage groove is formed on the surface of the base plate, with an opening at one end and a closed end at the other. The limiting box is fixed to the inner wall of the storage groove. Limiting pins are movably arranged on opposite ends of the limiting box. Limiting rings are fitted and fixed on the limiting pins, and the limiting rings are located inside the limiting box. A spring is also fitted on the limiting pin, and the spring is located on the side of the limiting ring near the end of the limiting pin that extends out of the base plate. The spring is in an extended state, and its two ends abut against the limiting ring and the inner wall of one end of the limiting box, respectively. The calipers are movably installed in the storage groove and located at the opening end of the storage groove. The width of the calipers is smaller than the width of the storage groove. Multiple limiting holes are evenly spaced along the length direction of the calipers on the side wall of the calipers near the limiting box, and the limiting pins can be inserted into the limiting holes, achieving the effect of being suitable for measuring various lengths.

[0089] This utility model embodiment provides a measuring ruler for engineering supervision, for reference. Figure 1 and Figure 2 The measuring ruler (for engineering supervision) includes a housing 1, a caliper 2 installed inside the housing 1, and a cover 3 installed on the housing 1. There are two housings 1 arranged opposite each other.

[0090] Reference Figure 2 and Figure 3The box body 1 includes a base plate 11, a limiting block 13, and a limiting box 14. The base plate 11 is rectangular, and a storage groove 12 is formed on the upper surface of the base plate 11 along its length. The length of the storage groove 12 is less than the length of the base plate 11, and the storage groove 12 has an opening at one end of the base plate 11 and a closed end at the other end. Screw holes 121 are formed at the four corners of the upper surface of the base plate 11. First scales 111 are engraved on both sides of the lower surface of the base plate 11 along its length, starting from the open end of the storage groove 12 and extending to the closed end of the storage groove 12.

[0091] Reference Figure 2 The thickness of the limiting block 13 is equal to the depth of the storage groove 12, and its length is less than the width of the storage groove 12. The limiting block 13 is fixed to the inner wall of the storage groove 12 near the opening. The length direction of the limiting block 13 is perpendicular to the length direction of the storage groove 12, and the outer surface of the limiting block 13 facing the opening of the storage groove 12 is flush with the end face of the opening end of the storage groove 12.

[0092] Reference Figure 3 and Figure 4 The limiting box 14 is a square box with the same width and length as the limiting block 13. The bottom surface of the limiting box 14 is fixed to the bottom and inner wall of the storage groove 12 and is spaced apart from the limiting block 13. The outer surface of the limiting box 14 facing the opening of the storage groove 12 is flush with the end face of the opening end of the storage groove 12. Mounting holes are coaxially formed on the two outer walls of the limiting box 14. A through hole communicating with the mounting holes is formed on the wall of the storage groove 12. A second scale 112 is engraved on the outer wall of the base plate 11 away from the through hole, starting from the opening end of the storage groove 12 and extending along its length.

[0093] Reference Figure 4 The limiting box 14 contains a limiting pin 141, a limiting ring 143 fixed to the limiting pin 141, and a spring 142 fixed to the limiting ring 143. The length of the limiting pin 141 is greater than the length of the limiting box 14, and its diameter is equal to the diameter of the mounting hole. The limiting pin 141 is movably inserted into two mounting holes and a through hole. One end of the limiting pin 141 near the through hole is located outside the base plate 11, and the other end is located inside the receiving groove 12. The inner diameter of the limiting ring 143 is equal to the diameter of the limiting pin 141. The inner wall of the limiting ring 143 is fitted and fixed to the outer wall of the limiting pin 141, and the limiting ring 143 is located inside the limiting box 14. The outer diameter of the limiting ring 143 is smaller than the width inside the limiting box 14. The length of spring 142 is less than the length of the limiting box 14. Spring 142 is extended and sleeved on the limiting pin 141, located between the limiting ring 143 and the plate surface of the limiting box 14 that are attached to the groove wall of the storage groove 12. One end of spring 142 is fixed to the plate surface of the limiting ring 143 facing the through hole, and the other end is fixed to the inner wall of the limiting box 14 that is attached to the groove wall of the storage groove 12.

[0094] Reference Figure 2 and Figure 3 The caliper 2 is a strip ruler with a width smaller than that of the storage slot 12. The thickness of the caliper 2 is equal to the depth of the storage slot 12, and the length of the caliper 2 is equal to the sum of the lengths of the two storage slots 12. The caliper 2 is inserted into the storage slot 12, and its opposite side walls are respectively in contact with the end faces of the limiting block 13 and the limiting box 14. Four blocking blocks 21 are fixed to the caliper 2. The blocking blocks 21 are square in shape, and their width is equal to the depth of the storage slot 12. The blocking blocks 21 are fixed to the side walls at both ends of the length direction of the caliper 2, and the side walls are flush with the end faces of the caliper 2. Multiple limiting holes 22 are evenly spaced along the length direction of the caliper 2 on the side wall near the limiting box 14. The depth of the limiting holes 22 is equal to the length of the section of the limiting pin 141 located in the storage slot 12, and the limiting pin 141 can be inserted into the limiting holes 22. The caliper 2 has a third scale 23 engraved on its upper surface facing away from the bottom of the groove. In this embodiment, the first scale 111, the second scale 112, and the third scale 23 are scales of the same specification, with the smallest measuring unit being millimeters. Integers are engraved every 10 millimeters to accurately measure the length of the position to be measured. When the limiting pin 141 is inserted into the limiting hole 22, the integer scale of the third scale 23 is flush with the end face of the opening of the storage groove 12. Thus, when the two boxes 1 are unfolded and the caliper 2 is exposed, the integer scale of the first scale 111 can be aligned with the integer scale of the third scale 23, facilitating measurement and calculation.

[0095] Reference Figure 2 The lid 3 is a strip plate with the same length and width as the box body 1. Two lids 3 are provided and are fixedly installed on the end face of the box body 1 where screw holes 121 are provided. The side wall of the lid 3 is flush with the side wall of the box body 1. Fixing holes 31 are provided at the four corners of the lid 3. The fixing holes 31 are coaxial with the screw holes 121 and the edges of the holes on the upper surface of the lid 3 are chamfered. The lid 3 is also equipped with bolts 32. The length of the bolts 32 is less than the thickness of the box body 1. The bolts 32 pass through the fixing holes 31 and are threaded into the screw holes 121. The nuts are placed in the fixing holes 31 and the flat end of the nuts is flush with the upper surface of the lid 3, thus fixing the lid 3 to the box body 1.

[0096] When using the measuring ruler, the supervisor can adjust its length according to the location being measured. For short measurements, the first graduation 111 on the bottom of the housing 1 can be used directly. For longer measurements, the limiting pin 141 is pulled outwards, and the housing 1 is stretched to both sides, connecting the two housings and extending the measuring ruler. When the desired length is reached, the limiting pin 141 is released, allowing a section of the limiting pin 141 in the storage groove 12 to engage with the limiting hole 22 for fixation, thus fixing the measuring ruler's length. Measurements are taken using the third graduation 23 on the caliper 2 in conjunction with the second graduation 112 on the outer groove wall. After use, the limiting pin 141 is pulled outwards from the housing 1, and the open ends of the two housings 1 are closed, allowing the caliper 2 to be completely stored inside the housing 1, facilitating carrying and protecting it from deformation.

[0097] A storage slot is included to prevent the calipers from easily deforming or bending, thus protecting them. A stop block is also included; when the calipers are extended to their maximum length, the stop block engages with the stop block to prevent them from detaching from the case. A second graduation engraved on the side wall of the case increases the measuring range of the calipers.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A measuring ruler for engineering supervision, characterized in that, include: A pair of boxes (1), a pair of locking mechanisms, a pair of limiting mechanisms and calipers (2), wherein the pair of boxes (1) are slidably and locked at both ends of the calipers (2) by the pair of locking mechanisms, and the pair of limiting mechanisms are respectively installed at the connection between the pair of boxes (1) and the calipers (2).

2. The measuring ruler for engineering supervision according to claim 1, characterized in that, The box body (1) includes a base plate (11) and a lid (3). The upper surface of the base plate (11) is provided with a storage groove (12). The lid (3) is connected to the base plate (11). The end of the storage groove (12) adjacent to the caliper (2) is an open end. Both ends of the caliper (2) are slidably installed in the storage groove (12).

3. A measuring ruler for engineering supervision according to claim 2, characterized in that, The base plate (11) has a rectangular structure, and the storage groove (12) is arranged along the length direction of the base plate (11). The length of the storage groove (12) is less than the length of the base plate (11), and the other end of the storage groove (12) is a closed end.

4. A measuring ruler for engineering supervision according to claim 3, characterized in that, The bottom plate (11) has a first scale (111) engraved on both sides of the lower plate surface along the length direction. The first scale (111) starts from the opening end of the storage groove (12) and extends along the lower plate surface of the bottom plate (11) to the closed end of the storage groove (12). The box body (1) has a second scale (112) engraved on one side, starting from the end of the box body (1) adjacent to the caliper (2) along the length direction of the box body (1). The caliper (2) has a third scale (23) engraved on the upper surface away from the storage groove (12).

5. A measuring ruler for engineering supervision according to claim 4, characterized in that, The first scale (111), the second scale (112), and the third scale (23) are scales of the same specification. The smallest unit of measurement for the first scale (111), the second scale (112), and the third scale (23) is millimeters. Integers are engraved at every 10 millimeters in the first scale (111), the second scale (112), and the third scale (23).

6. A measuring ruler for engineering supervision according to claim 2, characterized in that, The caliper (2) is a strip ruler whose width is smaller than that of the storage slot (12). The thickness of the caliper (2) is equal to the depth of the storage slot (12). The length of the caliper (2) is equal to the sum of the lengths of the storage slots (12) in the two boxes (1).

7. A measuring ruler for engineering supervision according to claim 2, characterized in that, The box cover (3) is a strip plate adapted to the base plate (11). The upper surface of the base plate (11) is provided with a screw hole (121). The box cover (3) is provided with a fixing hole (31). The side of the fixing hole (31) away from the storage groove (12) is a chamfered opening. The fixing hole (31) and the screw hole (121) are connected by a bolt (32). The length of the bolt (32) is less than the thickness of the box body (1). The nut of the bolt (32) is located in the fixing hole (31). The flat end of the nut of the bolt (32) is flush with the upper surface of the box cover (3).

8. A measuring ruler for engineering supervision according to claim 1, characterized in that, The limiting mechanism includes a limiting block (13) and a blocking block (21). The limiting block (13) is installed on one end of the box (1) near the caliper (2). The end of the limiting block (13) near the caliper (2) is flush with the end of the box (1) near the caliper (2). The blocking block (21) is installed on the end of the caliper (2). The blocking block (21) protrudes from both sides of the caliper (2). The limiting block (13) is located on the sliding trajectory of the blocking block (21).

9. A measuring ruler for engineering supervision according to claim 1, characterized in that, The locking mechanism includes a limiting box (14) and a limiting pin (141). The limiting box (14) is installed on one end of the box body (1) near the caliper (2). The end of the limiting box (14) near the caliper (2) is flush with the end of the box body (1) near the caliper (2). A plurality of limiting holes (22) are provided on one side of the caliper (2). The limiting pin (141) is slidably installed in the limiting box (14). One end of the limiting pin (141) passes through the limiting box (14) and is exposed on the outside. The other end of the limiting pin (141) passes through the limiting box (14) and the box body (1) and is exposed on the outside. When the relative position of the caliper (2) and the box body (1) is locked, one end of the limiting pin (141) is located in the limiting hole (22).

10. A measuring ruler for engineering supervision according to claim 9, characterized in that, The limiting box (14) is provided with an installation hole, and the side wall of the box body (1) is provided with a through hole. The limiting pin (141) is slidably installed in the installation hole and the through hole.

11. A measuring ruler for engineering supervision according to claim 10, characterized in that, A spring (142) and a limiting ring (143) are fitted on the limiting pin (141). The spring (142) and the limiting ring (143) are both installed in the limiting box (14). The limiting ring (143) is fixedly connected to the limiting pin (141). The two ends of the spring (142) abut against the limiting ring (143) and the box body (1), respectively.

12. A measuring ruler for engineering supervision according to claim 11, characterized in that, The length of the limiting pin (141) is greater than the length of the limiting box (14), the diameter of the limiting pin (141) is the same as the diameter of the mounting hole, the inner diameter of the limiting ring (143) is the same as the diameter of the limiting pin (141), the outer diameter of the limiting ring (143) is smaller than the inner width of the limiting box (14), the length of the spring is smaller than the length of the limiting box (14); the spring (142) is a compression spring; a plurality of limiting holes (22) are equally spaced along the length direction of the caliper (2), and the depth of the limiting hole (22) is equal to the length of one end of the limiting pin (141) exposed on the outside.

Images