Measuring device for surveying, mapping and acceptance inspection of metal mine

Abstract

The utility model relates to the technical field of measuring devices, and provides a measuring device for surveying, mapping and acceptance inspection of a metal mine, which comprises a first measuring scale and a second measuring scale, and further comprises a connecting block fixed at one end of the second measuring scale and provided with two clamping grooves on the outer surface; and the connecting assembly is arranged in the first measuring ruler and comprises two clamping blocks. When the device is connected, only the connecting block of the second measuring ruler needs to be inserted into the second mounting groove of the first measuring ruler, the pressing piece is pressed when the device is separated, the operation is simple, the clamping block is in close fit with the clamping groove of the connecting block under the elastic force action of the first spring, relative movement of the two rulers during measurement is avoided, and the clamping block adopts the rectangular column design with one end subjected to fillet treatment; the clamping groove is matched, the insertion process is optimized, the operation time is shortened, the efficiency is improved, the measurement precision is ensured, meanwhile, part abrasion is reduced, the service life of the device is prolonged, and the device is convenient to carry and can cope with different measurement scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring device technical field especially relates to a kind of measuring device for metal mine surveying and mapping acceptance. BACKGROUND

[0002] Measuring scale is widely applied in metal mine surveying and mapping acceptance, can be measured to mine underground small components (such as support spacing, equipment installation foundation short side size), surface small engineering (such as drainage ditch width, retaining wall thickness) etc., ruler can satisfy basic length measurement demand;When cooperating with total station, precise instrument such as level, it can also be used for short distance calibration (such as instrument erection height measurement, pole scale auxiliary reading).

[0003] But in prior art, measuring scale length is fixed, too long ruler is easy to knock when carrying in mine underground narrow roadway, low space, and occupies carrying space, increases the load burden of operating personnel, too short ruler is difficult to meet the measurement demand of larger size, there is defect. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the technical problem of prior art that measuring scale length is fixed, too long ruler is easy to knock when carrying in mine underground narrow roadway, low space, and occupies carrying space, increases the load burden of operating personnel, too short ruler is difficult to meet the measurement demand of larger size, there is defect.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of measuring device for metal mine surveying and mapping acceptance: including first measuring scale and second measuring scale, further including:

[0006] Connecting block, fixed at one end of second measuring scale, and two clamping grooves are set on outer surface;

[0007] Connecting assembly, set up in the inside of first measuring scale, including: two clamping blocks;

[0008] Mounting groove one, set up two, set up in the upper surface of first measuring scale and second measuring scale, two the inside of mounting groove one is provided with scale;

[0009] Protective plate, set up two, are rotatably connected in the inside of two mounting grooves one by hinge;

[0010] Unfolding assembly, set up in the inside of first measuring scale and second measuring scale, including: two push rods;

[0011] Among them, push rod moves under stress, drives protective plate to switch in first state and second state, when first state, push rod rises under stress and drives protective plate to rotate, scale is exhibited, when second state, push rod descends under stress and drives protective plate to reset, scale is covered.

[0012] As a preferred embodiment, the connecting assembly further comprises:

[0013] The second installation groove is arranged at one end of the first measuring scale and has an inner wall surface matched with an outer surface of the clamping block.

[0014] The third installation groove is arranged at an outer surface of the first measuring scale.

[0015] The installation hole is arranged at the inner wall surface of the two third installation grooves close to the outer side.

[0016] The bolt is arranged at the inner side of the installation hole.

[0017] The second installation groove provides a precise positioning space for the insertion of the connecting block, ensuring the accurate connection position of the connecting block and the first measuring scale. The third installation groove provides an installation and movement track for the clamping block, ensuring stable movement of the clamping block. The cooperation of the installation hole and the bolt allows the position of the bolt in the installation hole to be adjusted by rotating the bolt, thereby providing a basis for the subsequent installation of the spring and the adjustment of the elastic force, enhancing the structural stability and adjustability of the connecting assembly.

[0018] As a preferred embodiment, the connecting assembly further comprises:

[0019] The spring is arranged at one side of the bolt.

[0020] The inner wall surface of the second installation groove is communicated with one end of the two third installation grooves, the outer surface of the connecting block is provided with two clamping grooves, and one end of the clamping block is embedded in the two clamping grooves.

[0021] The spring can provide a continuous elastic force to the clamping block, making the clamping block always have a tendency to move in the direction of the clamping groove, ensuring that the clamping block is tightly fitted in the clamping groove, significantly improving the stability of the connection between the first measuring scale and the second measuring scale, and effectively avoiding measurement errors caused by loose connection during measurement. The communication design of the third installation groove and the second installation groove provides a channel for the movement of the clamping block between the two, ensuring the smoothness of the cooperation between the clamping block and the clamping groove.

[0022] As a preferred embodiment, the connecting assembly further comprises:

[0023] The pressing piece penetrates the inner wall of the two third installation grooves at both ends.

[0024] The adjustment groove is arranged at the upper surface of the clamping block and has a triangular cross-section.

[0025] Both ends of the pressing piece are inclined surfaces matched with the inner wall surface of the clamping block.

[0026] The technical effect of adopting the above-mentioned further scheme is: the pressing piece cooperates with the inclined surface of the adjustment groove, which can convert the vertical pressing force of the pressing piece into a horizontal force that pushes the card block to move toward the inside of the third installation groove, thereby realizing rapid separation of the card block and the card slot without the aid of tools, simplifying the operation steps and improving the efficiency of connecting and separating the measuring ruler; the triangular-shaped adjustment groove design ensures stable and reliable force conversion, making the separation operation more labor-saving and convenient.

[0027] As a preferred embodiment, the deployment assembly further includes:

[0028] There are two mounting holes 1, which are opened on the opposite surfaces of the first measuring scale and the second measuring scale;

[0029] There are two second mounting holes, which are opened on the inner wall surfaces of the two first mounting holes;

[0030] There are two adjusting blocks, the outer surfaces of which are embedded in the interiors of the two mounting holes;

[0031] There are two push blocks, one side surface of which is fixedly connected to the outer surfaces of the two adjustment blocks, and the outer surface is embedded in the interior of the second mounting hole;

[0032] Spring 2, two springs are provided, one end of which is fixedly connected to the outer surface of the two push blocks, and the other end of which is fixedly connected to the inner wall surface of the second mounting hole;

[0033] The cross section of the regulating block is in the shape of a right-angled trapezoid.

[0034] The technical effect of adopting the above-mentioned further scheme is: mounting hole one provides a stable sliding space for the adjustment block, and mounting hole two provides an installation position for the connecting block and spring two, ensuring the orderly movement of each component; when the adjustment block with a right-angle trapezoidal structure slides under force, its inclined surface can effectively contact and transmit force with the connecting piece at the lower end of the push rod, thereby realizing the up and down movement of the push rod; spring two can push the adjustment block to reset when it is not under force, providing power for the automatic retraction of the protective plate, thereby enhancing the automation level and ease of use of the deployment component.

[0035] As a preferred embodiment, the deployment assembly further includes:

[0036] There are two mounting slots 4, which are opened inside the two mounting slots 1;

[0037] Two sliding blocks are provided, which are rotatably connected to one end of the two push rods via a rotating shaft, and the outer surface of the sliding block is embedded in the interior of the mounting groove 4;

[0038] Two connecting members are provided, one end of each of the two connecting members is fixedly connected to one side of the sliding block;

[0039] The two sliding grooves are arranged on the side surface of the two protective plates.

[0040] The two push rods are connected with the two sliding blocks through the connecting pieces.

[0041] The connecting pieces are matched with the sliding grooves, the stability of force transmission between the push rods and the protective plates is ensured, and the rotating movement of the protective plates is more stable and reliable.

[0042] As a preferred embodiment, the lower ends of the two push rods are also fixedly connected with connecting pieces, and the inclined surfaces of the two adjusting blocks are also provided with sliding grooves.

[0043] The connecting pieces at the lower ends of the push rods are matched with the sliding grooves on the inclined surfaces of the adjusting blocks, a transmission bridge is formed between the adjusting blocks and the push rods, the sliding of the adjusting blocks can be accurately converted into the up-down movement of the push rods, and the efficiency and accuracy of force transmission are improved.

[0044] Compared with the prior art, the utility model has the advantages and positive effects that:

[0045] 1、The device only needs to insert the connecting block of the second measuring ruler into the installation slot two of the first measuring ruler when connecting, and can be separated by pressing the pressing piece, so that the operation is simple.

[0046] 2、The device is convenient to carry and can cope with different measurement scenes. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 A three-dimensional structure schematic diagram of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided;

[0048] Figure 2 A sectional view three-dimensional structure schematic diagram of the first measuring scale of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided;

[0049] Figure 3 A three-dimensional structure schematic diagram of the adjusting block of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided;

[0050] Figure 4 A sectional view structure schematic diagram of the adjusting block of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided;

[0051] Figure 5 A sectional view structure schematic diagram of the protection plate of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided;

[0052] Figure 6 A sectional view structure schematic diagram of the second mounting groove of the measuring device for metal mine surveying and mapping acceptance provided by the utility model is provided.

[0053] Legend:

[0054] 1, the first measuring scale; 2, the second measuring scale; 3, the protection plate; 4, the scale table; 5, the mounting groove four; 6, the push rod; 7, the pressing piece; 8, the mounting hole; 9, the bolt; 10, the mounting groove one; 11, the mounting groove three; 12, the connecting block; 13, the clamping groove; 14, the clamping block; 15, the push block; 16, the connecting piece; 17, the mounting hole one; 18, the adjusting block; 19, the sliding groove; 20, the mounting hole two; 21, the spring two; 22, the sliding block; 23, the spring one; 24, the second mounting groove; 25, the adjusting groove. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0056] Embodiment 1:

[0057] Please refer to Figures 1-6 The embodiment provides a measuring device for metal mine surveying and mapping acceptance, and the specific idea is as follows:

[0058] As a specific embodiment, it comprises the first measuring scale 1 and the second measuring scale 2, and further comprises:

[0059] The connecting block 12 is fixed at one end of the second measuring scale 2, and two clamping grooves 13 are formed on the outer surface of the connecting block 12.

[0060] The connecting assembly is arranged in the interior of the first measuring scale 1, and comprises two clamping blocks 14.

[0061] The mounting groove one 10 is arranged in two, and is formed on the upper surface of the first measuring scale 1 and the second measuring scale 2. The interior of the two mounting groove ones 10 is provided with the scale table 4.

[0062] The protective plate 3 is arranged in two, and is rotatably connected in the interior of the two mounting groove ones 10 through a hinge.

[0063] The unfolding assembly is arranged in the interior of the first measuring scale 1 and the second measuring scale 2, and comprises two push rods 6.

[0064] The push rod 6 is forced to move, and drives the protective plate 3 to switch between the first state and the second state. In the first state, the push rod 6 is forced to rise and drives the protective plate 3 to rotate, so as to display the scale table 4. In the second state, the push rod 6 is forced to descend and drives the protective plate 3 to reset, so as to cover the scale table 4.

[0065] In the embodiment, the specific type of the connecting assembly can be various, and the application does not limit it. In an optional scheme, as an example of the connecting assembly, the connecting assembly comprises a pressing piece 7, a mounting hole 8, a mounting groove three 11, a clamping block 14, a bolt 9, a spring one 23, a mounting groove two 24, and an adjusting groove 25. The specific number of each component is shown in Figure 2 、 Figure 3 and Figure 6 The setting mode is as follows:

[0066] In the embodiment, the pressing piece 7 is movably embedded in the upper surface of the first measuring scale 1, and the two ends are embedded in the interior of the two adjusting grooves 25.

[0067] The mounting hole 8 for providing the mounting space is formed on the outer surface of the first measuring scale 1 by laser cutting.

[0068] The mounting groove three 11 for providing the mounting space is formed in the interior of the first measuring scale 1 by laser cutting.

[0069] The two clamping blocks 14 for providing support are slidably embedded in the interior of the two mounting groove threes 11, and one end is located in the interior of the mounting groove two 24.

[0070] The two bolts 9 for providing support are threadedly connected in the interior of the two mounting holes 8.

[0071] Two springs 23 for providing energy storage are fixed on one side of two bolts 9.

[0072] The mounting groove two 24 for providing mounting space is laser cut at one end of the first measuring ruler 1.

[0073] The two adjusting grooves 25 for changing the stress direction are respectively laser cut on the upper surfaces of the two clamping blocks 14.

[0074] The outer surface of the connecting block 12 is provided with two clamping grooves 13, and one end of the two clamping blocks 14 is embedded in the inner part of the two clamping grooves 13.

[0075] In addition, in the present embodiment, the two clamping blocks 14 only cooperate with the two clamping grooves 13, so the shape thereof includes but is not limited to a circular shape, a rectangular shape, and a polygonal shape. In the present application, a rectangular column with rounded corners at one end is adopted.

[0076] In the present embodiment, when it is necessary to connect the first measuring ruler 1 and the second measuring ruler 2, the connecting block 12 fixed at one end of the second measuring ruler 2 is inserted into the mounting groove two 24 at one end of the first measuring ruler 1. At this time, under the elastic force of the spring 23, one end of the two clamping blocks 14 will be embedded in the two clamping grooves 13 on the outer surface of the connecting block 12, thereby realizing the stable connection of the first measuring ruler 1 and the second measuring ruler 2. When it is necessary to separate the two measuring rulers, the pressing piece 7 movably arranged on the upper surface of the first measuring ruler 1 is pressed. The two ends of the pressing piece 7 will exert a force on the adjusting grooves 25 on the upper surfaces of the two clamping blocks 14. Due to the characteristics of the cross section of the adjusting grooves 25, the pressing force of the pressing piece 7 will be converted into a force for pushing the clamping blocks 14 to move into the inner part of the mounting groove three 11, so that the clamping blocks 14 are separated from the clamping grooves 13. At this time, the connecting block 12 can be pulled out of the mounting groove two 24, thereby completing the separation of the two measuring rulers. The operation is convenient, and the connection and separation of the two measuring rulers can be realized through a simple pressing action. The operation efficiency during the acceptance of the metal mine surveying and mapping can be effectively improved. The connection is stable. Under the action of the spring 23, the clamping blocks 14 and the clamping grooves 13 can be closely matched, so that the relative movement of the two measuring rulers during the measurement is avoided, thereby affecting the measurement accuracy. The adaptability is strong. The clamping blocks 14 adopt a design of a rectangular column with rounded corners at one end, so that the connecting block 12 is more smoothly inserted into the mounting groove two 24. At the same time, the wear between the parts is reduced, the service life of the device is prolonged, and the device is convenient to carry and can cope with different measurement scenes.

[0077] Embodiment 2:

[0078] As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, on the basis of embodiment 1, the embodiment also provides a deployment assembly arranged inside the first measuring scale 1 and the second measuring scale 2, including an adjusting block 18, and the first state and the second state of the protective plate 3 are switched by the movement of the adjusting block 18.

[0079] In the first state, the adjusting block 18 moves under force, drives the push block 15 to move in the mounting hole two 20, extrudes the spring two 21 to the compressed state, the adjusting block 18 slides in the mounting hole one 17, the inclined surface of the right-angled trapezoidal cross section extrudes the push rod 6, and the push rod 6 moves upward. The push rod 6 drives the sliding block 22 connected by the rotating shaft to move, the connecting piece 16 on one side of the sliding block 22 slides in the sliding groove 19 of the protective plate 3, drives the protective plate 3 to rotate to the first state of deployment, and exposes the scale 4.

[0080] In the second state, the adjusting block 18 disappears under force, the spring two 21 resets to drive the push block 15 to move reversely, drives the adjusting block 18 to reset in the mounting hole one 17. The extrusion force of the adjusting block 18 on the push rod 6 disappears, the push rod 6 moves downward, through the cooperation of the sliding block 22, the connecting piece 16 and the sliding groove 19, drives the protective plate 3 to rotate reversely, resets to the second state of being stored in the mounting groove one 10, and covers the scale 4.

[0081] As a specific implementation, the deployment assembly includes: the protective plate 3 for shielding the scale 4, the protective plate 3 is connected by a hinge to rotate inside the mounting groove one 10;

[0082] The adjusting block 18 has a right-angled trapezoidal cross section, is embedded in the inside of the mounting hole one 17, and drives other components to realize the state switching of the protective plate 3 through its own movement;

[0083] The push block 15 has one side surface fixedly connected to the outer surface of the adjusting block 18, and the outer surface is embedded in the inside of the mounting hole two 20, and moves synchronously with the adjusting block 18;

[0084] The spring two 21 has one end fixedly connected to the outer surface of the push block 15 and the other end fixedly connected to the inner wall surface of the mounting hole two 20, and provides elastic force for the reset of the adjusting block 18;

[0085] The mounting hole two 20 is opened in the inner wall surface of the mounting hole one 17, and provides installation and movement space for the push block 15 and the spring two 21;

[0086] The mounting hole one 17 is opened in the opposite surfaces of the first measuring scale 1 and the second measuring scale 2, and provides installation and sliding space for the adjusting block 18;

[0087] The push rod 6 is movably arranged inside the first measuring scale 1 and the second measuring scale 2, moves up and down under the extrusion of the inclined surface of the adjusting block 18, and is used for power transmission;

[0088] The sliding block 22 is rotatably connected to one end of the push rod 6 through a rotating shaft, moves with the push rod 6, and drives the connecting piece 16 to move;

[0089] The connecting piece 16 is fixedly connected to one side of the sliding block 22, and the lower end of the push rod 6 is also fixedly connected with the connecting piece 16, which is embedded in the sliding groove 19 and plays a connecting and transmission role;

[0090] The sliding groove 19 is provided on the side surface of the protective plate 3 and the inclined surface of the adjusting block 18, and provides a sliding path for the connecting piece 16;

[0091] The mounting groove one 10 is provided on the upper surface of the first measuring scale 1 and the second measuring scale 2, and provides a mounting space for the protective plate 3, and the inside is provided with the scale table 4.

[0092] In this embodiment, when the first measuring scale 1 and the second measuring scale 2 are installed, the two adjusting blocks 18 will be pressed against each other, and then slide in the mounting hole one 17, while driving the push block 15 to move synchronously in the mounting hole two 20, the push block 15 will press the spring two 21 to make it in a compressed state, because the adjusting block 18 adopts a right trapezoidal cross-section design, its inclined surface will contact and press the connecting piece 16 at the lower end of the push rod 6, forcing the push rod 6 to move upward, when the push rod 6 rises, the sliding block 22 is driven to move through the rotating shaft, the connecting piece 16 on one side of the sliding block 22 will slide in the sliding groove 19 of the protective plate 3, thereby pushing the protective plate 3 to rotate around the hinge, and finally unfolding to the first state, displaying the scale table 4, after use, the spring two 21 in the compressed state will release the elastic force, pushing the push block 15 to move reversely, the push block 15 drives the adjusting block 18 to reset in the mounting hole one 17, at this time, the pressing force of the adjusting block 18 on the push rod 6 disappears, the push rod 6 moves downward under the action of its own gravity and the cooperation between components, through the transmission of the sliding block 22, the connecting piece 16 and the sliding groove 19, it drives the protective plate 3 to rotate reversely, and finally is stored in the mounting groove one 10, completing the switching of the second state, covering the scale table 4, through the cooperation of the right trapezoidal structure of the adjusting block 18 and the connecting piece 16 and the sliding groove 19, the linear motion of the adjusting block 18 is stably converted into the rotary motion of the protective plate 3, the transmission process is accurate and efficient, ensuring the stability of the state switching of the protective plate 3, at the same time, the reset design of the spring two 21 makes the protective plate 3 automatically return to the storage state without external force, reducing the manual reset operation, and better meeting the needs of quickly switching the measurement scene in the mine surveying and mapping acceptance, in addition, all components are embedded in the measuring scale, the structure is compact, avoiding the problem that the exposed components are damaged due to collision in the complex environment of the mine, prolonging the service life of the device.

[0093] Working principle:

[0094] When connecting the first measuring scale 1 and the second measuring scale 2, the connecting block 12 at one end of the second measuring scale 2 is inserted into the mounting slot two 24 at one end of the first measuring scale 1, and the two clamping blocks 14 are embedded into the two clamping grooves 13 on the outer surface of the connecting block 12 under the elastic force of the spring one 23, so that the stable connection of the two measuring scales is realized, when separating the two measuring scales, the pressing member 7 on the upper surface of the first measuring scale 1 is pressed, the two ends of the pressing member 7 exert force on the adjusting grooves 25 on the upper surfaces of the two clamping blocks 14, the pressing force is converted into the force of moving the clamping blocks 14 to the inside of the mounting slot three 11 by the characteristics of the cross section of the adjusting grooves 25, so that the clamping blocks 14 are separated from the clamping grooves 13, and the connecting block 12 can be pulled out of the mounting slot two 24, and the separation is completed.

[0095] When installing the first measuring scale 1 and the second measuring scale 2, the two adjusting blocks 18 are pressed against each other and slide in the mounting hole one 17, and at the same time, the push block 15 is synchronously moved in the mounting hole two 20, the push block 15 presses the spring two 21 to the compressed state, the inclined surface of the adjusting block 18 is in contact with the connecting member 16 at the lower end of the push rod 6, so that the push rod 6 is forced to move upwards, the push rod 6 drives the sliding block 22 to move through the rotating shaft, the connecting member 16 on one side of the sliding block 22 slides in the sliding groove 19 of the protective plate 3, and the protective plate 3 is rotated around the hinge to the first state, so that the scale table 4 is displayed, after the two measuring scales are separated, the elastic force of the compressed spring two 21 is released, the push block 15 is reversely moved, the adjusting block 18 is reset in the mounting hole one 17, the pressing force of the adjusting block 18 on the push rod 6 disappears, the push rod 6 moves downwards, and through the transmission of the sliding block 22, the connecting member 16 and the sliding groove 19, the protective plate 3 is reversely rotated and stored in the mounting slot one 10, the second state switching is completed, and the scale table 4 is covered.

[0096] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein.

[0097] The above is only a preferred embodiment of the utility model, and does not limit other forms of the utility model, any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the utility model to the above embodiments still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A measuring device for surveying and acceptance of metal mines, comprising a first measuring ruler (1) and a second measuring ruler (2), characterized in that: Also includes: A connecting block (12) is fixed to one end of the second measuring ruler (2) and has two slots (13) formed on its outer surface; A connecting assembly is arranged inside the first measuring ruler (1), comprising: two clamping blocks (14); There are two mounting grooves (10) provided, which are opened on the upper surfaces of the first measuring ruler (1) and the second measuring ruler (2), and scales (4) are provided inside the two mounting grooves (10); Two protective plates (3) are provided and are rotatably connected to the inside of the two mounting grooves (10) via hinges; The unfolding assembly is arranged inside the first measuring ruler (1) and the second measuring ruler (2), and comprises: two push rods (6); The push rod (6) is moved by force, driving the protective plate (3) to switch between a first state and a second state. In the first state, the push rod (6) is forced to rise and drive the protective plate (3) to rotate, thereby displaying the scale (4). In the second state, the push rod (6) is forced to fall and drive the protective plate (3) to reset, thereby covering the scale (4).

2. The measuring device for metal mine surveying and acceptance according to claim 1, characterized in that: The connection component further includes: The second mounting groove (24) is provided at one end of the first measuring ruler (1), and the inner wall surface of the mounting groove matches the outer surface of the clamping block (14); Mounting slot three (11), provided with two, opened on the outer surface of the first measuring ruler (1); There are two mounting holes (8), which are opened on the inner wall surface of the two mounting grooves (11) close to the outer side; Two bolts (9) are provided, and the outer surfaces thereof are threadedly connected to the inside of the mounting hole (8).

3. The measuring device for metal mine surveying and acceptance according to claim 2, characterized in that: The connection component further includes: Spring 1 (23), provided with two, fixed on one side of the two bolts (9); One end of the two mounting grooves three (11) is connected to the inner wall surface of the mounting groove two (24), and the outer surface of the connecting block (12) is provided with two card slots (13), and one end of the two card blocks (14) is embedded in the inside of the two card slots (13).

4. The measuring device for metal mine surveying and acceptance according to claim 3, characterized in that: The connection component further includes: The pressing member (7) has two ends passing through the inner walls of the two mounting grooves (11); Two adjusting grooves (25) are provided, which are opened on the upper surfaces of the two clamping blocks (14) and have a triangular cross-section; Both ends of the pressing member (7) are inclined surfaces, which fit in with the inner wall surfaces of the two clamping blocks (14).

5. The measuring device for metal mine surveying and acceptance according to claim 1, characterized in that: The expansion component also includes: Two mounting holes (17) are provided and are opened on the opposite surfaces of the first measuring ruler (1) and the second measuring ruler (2); There are two second mounting holes (20), which are opened on the inner wall surfaces of the two first mounting holes (17); There are two adjusting blocks (18), the outer surfaces of which are embedded in the interiors of the two mounting holes (17); There are two push blocks (15), one side surface of which is fixedly connected to the outer surfaces of the two adjustment blocks (18), and the outer surface is embedded in the interior of the second mounting hole (20); Spring 2 (21) is provided in two pieces, one end of which is fixedly connected to the outer surface of the two push blocks (15), and the other end of which is fixedly connected to the inner wall surface of the second mounting hole (20); The cross section of the regulating block (18) is in the shape of a right-angled trapezoid.

6. The measuring device for metal mine surveying and acceptance according to claim 5, characterized in that: The expansion component also includes: There are two mounting slots (5) provided, which are opened inside the two mounting slots (10); Two sliding blocks (22) are provided, which are rotatably connected to one end of the two push rods (6) via a rotating shaft, and the outer surface of the sliding block (22) is embedded in the interior of the fourth mounting groove (5); Two connecting members (16) are provided, and one end of the two connecting members (16) is fixedly connected to one side of the sliding block (22); Two chutes (19) are provided and are opened on one side surface of the two protective plates (3); One end of the two push rods (6) passes through the bottom surface of the inner wall of the two mounting grooves (5), and the connecting piece (16) is convex and matches the inner wall surface of the slide groove (19).

7. The measuring device for metal mine surveying and acceptance according to claim 6, characterized in that: The lower ends of the two push rods (6) are also fixedly connected to a connecting piece (16), and the inclined surfaces of the two adjustment blocks (18) are also provided with a sliding groove (19), and the outer surfaces of the two connecting pieces (16) are embedded in the interior of the two sliding grooves (19).

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