Vertical dimension measuring device

Abstract

The utility model discloses a vertical dimension measuring device which comprises a workbench, a fixing block, a connecting rod, a fixing rod, a dismounting mechanism, a limiting mechanism, a height adjusting mechanism and a measuring device body. Two installation grooves are formed in the side portion of the workbench, the fixing block is arranged in one installation groove, the lower end of the fixing rod is installed at one end of the fixing block through a connecting rod, and the fixing rod vertically extends upwards. The dismounting and mounting mechanism is arranged at the other end of the fixing block, and the limiting mechanism is arranged in one mounting groove and detachably connected with the dismounting and mounting mechanism, so that the fixing block is detachably arranged in the workbench; the lower end of the height adjusting mechanism is arranged in the other mounting groove, and the upper end of the height adjusting mechanism extends upwards and vertically and is located beside the fixing rod; the measuring device body is arranged above the workbench in a lifting mode through the height adjusting mechanism. The utility model relates to the technical field of measuring equipment, and can solve the problem that a vertical dimension measuring device in the prior art is inconvenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a vertical dimension measuring device. Background Art

[0002] Verticality measurement tools can detect and measure the precise position and height of an object on three coordinate axes. They are mainly used to detect technical indicators such as the size, straightness and flatness of various types of metal materials such as profiles and steel sections. They are widely used in aerospace, military, automobile manufacturing and other industries.

[0003] Chinese utility model patent CN208720936U discloses a simple and reliable multifunctional coordinate measuring tool, including a base, a main measuring ruler, a secondary measuring ruler, a linear connection slider, and a rotary connection slider. The main measuring ruler is fixed to the base, the linear connection slider is slidably connected to the main measuring ruler, the rotary connection slider is rotatably connected to the linear connection slider, the secondary measuring ruler is slidably connected to the linear connection slider or the rotary connection slider, the main measuring ruler is provided with a main ruler scale along the sliding direction of the linear connection slider, the secondary measuring ruler is provided with a secondary ruler scale along the sliding direction, the linear connection slider is provided with an angle scale relative to the rotary connection slider, or the rotary connection slider is provided with an electronic angle measuring instrument.

[0004] Since most existing measuring tools are L-shaped, bulky, and difficult to disassemble, which affects storage, carrying, and transportation, it is necessary to provide a vertical dimension measuring device that can solve the problem of inconvenient disassembly of the existing vertical dimension measuring devices. Summary of the Invention

[0005] The purpose of the utility model is to provide a vertical dimension measuring device, which can solve the problem of inconvenient disassembly of the vertical dimension measuring device in the prior art.

[0006] The utility model is achieved in this way:

[0007] A vertical dimension measuring device includes a workbench, a fixed block, a connecting rod, a fixed rod, a disassembly and assembly mechanism, a limiting mechanism, a height adjustment mechanism and a measuring device body; two mounting grooves are formed on the side of the workbench, the fixed block is arranged in one of the mounting grooves, the lower end of the fixed rod is mounted on one end of the fixed block through the connecting rod, and the fixed rod extends vertically upward; the disassembly and assembly mechanism is arranged at the other end of the fixed block, the limiting mechanism is arranged in one of the mounting grooves and is detachably connected to the disassembly and assembly mechanism, so that the fixed block can be detachably arranged in the workbench; the lower end of the height adjustment mechanism is arranged in the other mounting groove, and the upper end of the height adjustment mechanism extends vertically upward and is located beside the fixed rod; the measuring device body is liftably arranged above the workbench through the height adjustment mechanism.

[0008] The limiting mechanism includes a connecting tube, a movable tube and a limiting tube; the connecting tube is arranged on the inner wall of the mounting groove, and the limiting tube is slidably sleeved on the connecting tube; the movable tube is arranged on the other end of the fixed block and is detachably plugged into the movable tube, and the disassembly and assembly mechanism is arranged on the movable tube and the limiting tube and is detachably connected to the movable tube and the limiting tube.

[0009] The disassembly and assembly mechanism includes a mounting block, a limiting rod, a clamping plate, a slide plate and a fixed plate; the limiting rod is mounted on the limiting tube through the mounting block, one end of the slide plate is mounted on the movable tube through the fixed plate, and the other end of the slide plate is connected to the clamping plate, and the end of the clamping plate away from the slide plate is a J-shaped hook structure and can be movably clamped on the limiting rod.

[0010] A clamping joint is formed on one end of the movable tube facing the limiting tube, and the clamping joint can be matched and inserted into the limiting tube.

[0011] The end of the movable tube facing the limiting tube is formed with a plurality of limiting plates, which are circumferentially arranged on the outside of the clamping joint; the end of the limiting tube facing the movable tube is formed with a plurality of limiting holes, and the plurality of limiting plates can be matched and inserted into the plurality of limiting holes.

[0012] The height adjustment mechanism includes a screw, a worm wheel, a worm and a handle; the worm is rotatably embedded in the workbench, one end of the worm extends into another mounting groove, and the other end of the worm extends to the outside of the workbench and is fixedly connected to the handle; the worm wheel is rotatably arranged in another mounting groove and is meshed and connected to the worm, the lower end of the screw is detachably screwed to the top of the worm wheel and rotates synchronously with the turbine coaxially, and the screw is arranged parallel to the side of the fixed rod; the measuring device body is liftably arranged on the screw and the fixed rod.

[0013] The main body of the measuring device includes a display screen, a fixed column, a connecting head, a mounting plate, a measuring instrument and an instrument panel; the display screen is liftably arranged on the screw and the fixed rod, the fixed column is installed through one end of the outer shell of the display screen, one end of the mounting plate is connected to the bottom of the fixed column through the connecting head, the measuring instrument is connected to the other end of the mounting plate, and the instrument panel is set on the measuring instrument.

[0014] A screw hole matching the screw rod is formed in one end of the housing of the display screen, and the screw hole is located beside the fixing column, so that the housing of the display screen and the screw rod are threadedly connected; a through hole is formed at the other end of the housing of the display screen, and the fixing rod passes through the through hole.

[0015] The tops of the screw rod and the fixing column are both provided with anti-slip limit plates, and the top of the display screen can contact the anti-slip limit plates.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model is provided with a workbench, a disassembly and assembly mechanism and a limit mechanism. The movable tube of the limit mechanism is used to slide and limit the limit tube, and the clamping plate of the disassembly and assembly structure is engaged with the limit rod, so that the fixed rod can be quickly installed in one of the installation slots. At the same time, it is convenient for reverse disassembly. After disassembly, the volume of the entire device can be greatly reduced. The disassembly operation is efficient and simple, which is conducive to storage, carrying and transportation after quick disassembly.

[0018] 2. The utility model is provided with a height adjustment mechanism, which can drive the screw to rotate through the transmission of the worm gear, and use the threaded transmission to make the housing of the display screen move up and down along the axial direction of the screw, thereby realizing the height adjustment of the measuring device body, and better meeting the measurement requirements of the measuring instrument for the measured object; at the same time, the screw and the worm gear are connected in a detachable manner, which is convenient and quick to disassemble and assemble, and can further facilitate storage, carrying and transportation after quick disassembly.

[0019] 3. The utility model has a simple structure, which can ensure stable installation and use of the measuring instrument while being easy to disassemble after use, thereby improving the convenience of storage, carrying and transportation, and having higher flexibility and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the vertical dimension measuring device of the utility model;

[0021] Figure 2 It is an enlarged schematic diagram of the disassembly and assembly mechanism and the limiting mechanism in the vertical dimension measuring device of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the measuring device main body in the vertical dimension measuring device of the utility model.

[0023] In the figure, 1. workbench; 101. mounting slot; 2. fixing block; 3. connecting rod; 4. fixing rod; 5. disassembly and assembly mechanism; 51. mounting block; 52. limiting rod; 53. clamping plate; 54. slide plate; 55. fixing plate; 6. limiting mechanism; 61. connecting pipe; 62. moving pipe; 63. clamping joint; 64. limiting plate; 65. limiting pipe; 66. limiting hole; 7. height adjustment mechanism; 71 screw; 72. worm gear; 73. worm; 74. handle; 8. display screen; 81. through hole; 9. fixing column; 10. connector; 11. mounting plate; 12. measuring instrument; 13. instrument panel; 14. anti-slip limit plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Please see the attached Figure 1 and attached Figure 2, a vertical dimension measuring device includes a workbench 1, a fixed block 2, a connecting rod 3, a fixed rod 4, a disassembly and assembly mechanism 5, a limiting mechanism 6, a height adjustment mechanism 7 and a measuring device main body; two mounting grooves 101 are formed on the side of the workbench 1, the fixed block 2 is arranged in one of the mounting grooves 101, the lower end of the fixing rod 4 is mounted on one end of the fixed block 2 through the connecting rod 3, and the fixing rod 4 extends vertically upward; the disassembly and assembly mechanism 5 is arranged at the other end of the fixed block 2, the limiting mechanism 6 is arranged in one of the mounting grooves 101 and is detachably connected to the disassembly and assembly mechanism 5, so that the fixed block 2 can be detachably arranged in the workbench 1; the lower end of the height adjustment mechanism 7 is arranged in the other mounting groove 101, and the upper end of the height adjustment mechanism 7 extends vertically upward and is located beside the fixed rod 4; the measuring device main body is liftably arranged above the workbench 1 through the height adjustment mechanism 7.

[0026] The fixing block 2 can be installed in one of the mounting grooves 101 or removed from the mounting groove 101 by cooperation of the disassembly structure 5 and the limiting mechanism 6. Preferably, the fixing block 2 can adopt a U-shaped structure, and through holes for the connecting rod 3 to pass through can be provided at the bottom of the fixing rod 4 and the two side plates of the fixing block 2, so that the bottom of the fixing rod 4 is fixed in the mounting groove 101 through the fixing block 2 and the connecting rod 3, and the bottom of the fixing rod 4 can be locked and fixed to the workbench 1 by bolts to ensure the stability of the fixing rod 4 during use.

[0027] Preferably, the disassembly and assembly structure 5 and the limiting mechanism 6 are arranged in pairs, and two pairs can be symmetrically arranged to ensure the installation stability of the fixing rod 4.

[0028] The height adjustment mechanism can be used to adjust the height of the measuring device body. At the same time, the height adjustment mechanism and the fixing rod 4 cooperate to ensure the lifting stability of the measuring device body during height adjustment, thereby facilitating the measuring device body to measure the object to be measured.

[0029] The provision of the two mounting slots 101 facilitates assembly and disassembly of the fixing block 2 and the height adjustment mechanism, and the entire device can be split into several parts, thereby reducing the volume of the entire device and improving the convenience of carrying, transporting, and storing.

[0030] Please see the attached Figure 2 The limiting mechanism 6 includes a connecting tube 61, a movable tube 62 and a limiting tube 65; the connecting tube 61 is arranged on the inner wall of the mounting groove 101, and the limiting tube 65 is slidably sleeved on the connecting tube 61; the movable tube 62 is arranged on the other end of the fixed block 2 and is detachably plugged into the movable tube 62, and the disassembly and assembly mechanism 5 is arranged on the movable tube 62 and the limiting tube 65 and is detachably connected to the movable tube 62 and the limiting tube 65.

[0031] Preferably, the outer diameter of the connecting tube 61 is slightly smaller than the inner diameter of the movable tube 62, allowing the movable tube 62 to be sleeved onto the connecting tube 61 and slide stably relative to the connecting tube 61. When the movable tube 62 slides toward the retaining tube 65, it serves to constrain the retaining tube 65, thereby retaining the fixed block 2 within the mounting groove 101 and facilitating the installation of the fixed rod 4. When the movable tube 62 slides away from the retaining tube 65, the restraint on the retaining tube 65 is released, allowing the fixed block 2 to be removed from the mounting groove 101. This sliding mechanism makes assembly and disassembly more convenient and simple.

[0032] Please see the attached Figure 2 The disassembly and assembly mechanism 5 includes a mounting block 51, a limiting rod 52, a clamping plate 53, a slide plate 54 and a fixing plate 55; the limiting rod 52 is mounted on the limiting tube 65 through the mounting block 51, one end of the slide plate 54 is mounted on the movable tube 62 through the fixing plate 55, and the other end of the slide plate 54 is connected to the clamping plate 53, and the end of the clamping plate 53 away from the slide plate 54 is a J-shaped hook structure and can be movably clamped on the limiting rod 52.

[0033] Preferably, the mounting block 51 can adopt a U-shaped structure, and the limiting rod 52 is installed between the two side plates of the U-shaped structure. The two side plates of the U-shaped structure can be used to play a limiting role, ensuring that the J-shaped hook structure of the clamping plate 53 can be accurately clamped to the limiting rod 52, thereby playing an axial limiting role.

[0034] Preferably, the slide plate 54 can be made of flexible plastic or flexible metal and has a certain degree of deformation, so that the J-shaped hook of the clamping plate 53 can be easily connected to or removed from the limiting rod 52 by utilizing the slight deformation of the slide plate 54. The fixing plate 55 can be made of a hard material and is used to be fixedly connected between the slide plate 54 and the movable tube 62.

[0035] Please see the attached Figure 2 A clamping joint 63 is formed on one end of the movable tube 62 facing the limiting tube 65 , and the clamping joint 63 can be matched and inserted into the limiting tube 65 .

[0036] Preferably, the outer diameter of the card joint 63 is slightly smaller than the inner diameter of the limiting tube 65, so that the card joint 63 can be inserted into the limiting tube 65, playing a role of radial limitation, and then utilizing radial limitation and axial limitation to ensure the reliable connection between the limiting mechanism 6 and the disassembly mechanism 5, ensuring that the bottom of the fixing rod 4 is installed in the installation groove 101, and the reverse disassembly process is convenient.

[0037] Please see the attached Figure 2 The end of the movable tube 62 facing the limiting tube 65 is formed with a plurality of limiting plates 64, and the plurality of limiting plates 64 are circumferentially arranged on the outside of the clamping joint 63; the end of the limiting tube 65 facing the movable tube 62 is formed with a plurality of limiting holes 66, and the plurality of limiting plates 64 can be matched and inserted into the plurality of limiting holes 66.

[0038] Preferably, the limiting plates 64 can be arc-shaped plates, with three plates arranged at equal intervals, and the shape, size, and number of the limiting holes 66 match the limiting plates 64. The plugging of the limiting plates 64 and the limiting holes 66 further plays a role of connection and limiting, thereby further ensuring a reliable connection between the limiting mechanism 6 and the disassembly mechanism 5.

[0039] Please see the attached Figure 1 The height adjustment mechanism 7 includes a screw 71, a worm gear 72, a worm 73 and a handle 74; the worm 73 is rotatably embedded in the workbench 1, one end of the worm 73 extends into another mounting groove 101, and the other end of the worm 73 extends to the outside of the workbench 1 and is fixedly connected to the handle 74; the worm gear 72 is rotatably arranged in another mounting groove 101 through a wheel axle and is meshed with the worm 73 for transmission connection, the lower end of the screw 71 is detachably screwed to the top of the worm gear 72 and rotates coaxially and synchronously with the turbine 72, and the screw 71 is arranged parallel to the side of the fixed rod 4; the measuring device body is liftably arranged on the screw 71 and the fixed rod 4.

[0040] Preferably, the handle 74 can be a Z-shaped handle, which is used to drive the worm 73 to rotate. When the worm 73 rotates, the worm gear 72 can be driven to rotate by the worm teeth. The worm gear 72 can be provided with a thread groove or a clamping groove, and the bottom of the screw 71 can be provided with a threaded section that matches the thread groove or a clamping block that matches the clamping groove, so that the screw 71 can be detachably connected to the worm gear 72 in a coaxial manner, which is convenient for assembly and disassembly, and the screw 71 can rotate synchronously with the worm gear 72.

[0041] Please see the attached Figure 1 and attached Figure 3 The main body of the measuring device includes a display screen 8, a fixing column 9, a connecting head 10, a mounting plate 11, a measuring instrument 12 and an instrument panel 13; the display screen 8 is liftably arranged on the screw 71 and the fixing rod 4, the fixing column 9 is installed through one end of the outer shell of the display screen 8, one end of the mounting plate 11 is connected to the bottom of the fixing column 9 through the connecting head 10, the measuring instrument 12 is connected to the other end of the mounting plate 11, and the instrument panel 13 is arranged on the measuring instrument 12.

[0042] Display screen 8 is electrically connected to measuring instrument 12, allowing measurement data from measuring instrument 12 to be displayed on display screen 8, facilitating direct and accurate data acquisition. Instrument panel 13 is used to adjust the angle of measuring instrument 12. Measuring instrument 12 and instrument panel 13 are conventional components of vertical dimension measuring instruments, and their structure and usage will not be detailed here.

[0043] The fixing column 9, the connecting head 10, and the mounting plate 11 are used to install the measuring instrument 12 on the outer casing of the display screen 8. Preferably, the connecting head 10 and the mounting plate 11 can adopt a U-shaped structure, and the connecting head 10 and the mounting plate 11 can be connected by a rotating shaft and locked by bolts, so as to facilitate the adjustment of the setting angle of the measuring instrument 12 to meet different measurement requirements.

[0044] Please see the attached Figure 1 and attached Figure 3 A screw hole matching the screw 71 is formed in one end of the shell of the display screen 8, and the screw hole is located next to the fixing column 9, so that the shell of the display screen 8 is threadedly connected to the screw 71; a through hole 81 is formed at the other end of the shell of the display screen 8, and the fixing rod 4 passes through the through hole 81.

[0045] The fixing rod 4 extends through the through hole 81 and serves to limit the display screen 8, preventing the display screen 8 from rotating with the screw 71. When the screw 71 rotates, the transmission effect of the thread converts the rotational motion of the screw 71 into the lifting motion of the display screen 8 along the axial direction of the screw 71, thereby achieving the purpose of adjusting the height of the measuring device body and better meeting the measurement requirements of the measuring instrument 12.

[0046] Please see the attached Figure 1 The tops of the screw rod 71 and the fixing column 4 are both provided with anti-slip limit plates 14 , and the top of the display screen 8 can contact the anti-slip limit plates 14 .

[0047] The anti-dropping limiting plate 14 can be a circular plate, and the diameter of the anti-dropping limiting plate 14 is larger than the diameter of the screw 71 and the fixing column 4. By setting the anti-dropping limiting plate 14, the display screen 8 can be prevented from upwardly escaping from the screw 71 and the fixing column 4.

[0048] Please see the attached Figure 1 To the attached Figure 3 , the usage method and working principle of the utility model are:

[0049] The object to be measured is placed on workbench 1. Measuring instrument 12 is adjusted based on the data displayed on instrument panel 13. Measuring instrument 12 uses conventional vertical dimension measuring instruments and methods, and the measurement process is not detailed here. Measuring instrument 12 is electrically connected to display screen 8, and the measured data is displayed on display screen 8.

[0050] During measurement, the handle 74 can be rotated according to the required height of the measuring instrument 12. The handle 74 drives the worm 73 to rotate synchronously. The worm 73 engages the worm gear 72, which rotates within the mounting slot 101 and drives the screw 71 to rotate synchronously. Under the transmission of the thread, the rotation of the screw 71 is converted into the lifting and lowering movement of the measuring device body along the axial direction of the screw 71. The height of the measuring instrument 12 can be adjusted by rotating the handle 74 in the forward or reverse direction.

[0051] After the measurement is completed, the clamping plate 53 can be separated from the limiting rod 52, and the movable tube 62 can be slid along the connecting tube 61 in a direction away from the limiting tube 65, so that the clamping joint 63 is disengaged from the limiting tube 65 and the limiting plate 64 is disengaged from the limiting hole 66. The bolts between the fixing rod 4 and the workbench 1 are removed, and the fixing block 2 can be removed from the mounting groove 11. At the same time, the screw rod 71 is rotated to remove it from the worm gear 72, and the fixing rod 4 is pulled out from the through hole 81 of the display screen 8 housing. The display screen 8 and the screw rod 71 are then rotated relative to each other to remove the measuring device body from the screw rod 71. This facilitates the disassembly of the entire device into multiple parts, improves the convenience of storage, transportation and carrying, and greatly reduces the occupied space.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical dimension measuring device, characterized by: The invention comprises a workbench (1), a fixed block (2), a connecting rod (3), a fixed rod (4), a disassembly mechanism (5), a limiting mechanism (6), a height adjustment mechanism (7) and a measuring device body; two mounting grooves (101) are formed on the side of the workbench (1); the fixed block (2) is arranged in one of the mounting grooves (101); the lower end of the fixing rod (4) is mounted on one end of the fixed block (2) through the connecting rod (3); the fixing rod (4) extends vertically upward; the disassembly mechanism (5) is arranged at the other end of the fixed block (2); the limiting mechanism (6) is arranged in one of the mounting grooves (101) and is detachably connected to the disassembly mechanism (5), so that the fixed block (2) can be detachably arranged in the workbench (1); the lower end of the height adjustment mechanism (7) is arranged in the other mounting groove (101); the upper end of the height adjustment mechanism (7) extends vertically upward and is located beside the fixed rod (4); the measuring device body is arranged above the workbench (1) in a liftable manner through the height adjustment mechanism (7).

2. The vertical dimension measuring device according to claim 1, characterized in that: The limiting mechanism (6) comprises a connecting tube (61), a movable tube (62) and a limiting tube (65); the connecting tube (61) is arranged on the inner wall of the mounting groove (101), and the limiting tube (65) is slidably sleeved on the connecting tube (61); the movable tube (62) is arranged on the other end of the fixed block (2) and is detachably plugged into the movable tube (62); the disassembly mechanism (5) is arranged on the movable tube (62) and the limiting tube (65) and is detachably connected to the movable tube (62) and the limiting tube (65).

3. The vertical dimension measuring device according to claim 2, characterized in that: The disassembly and assembly mechanism (5) comprises a mounting block (51), a limiting rod (52), a clamping plate (53), a slide plate (54) and a fixing plate (55); the limiting rod (52) is mounted on the limiting tube (65) through the mounting block (51); one end of the slide plate (54) is mounted on the moving tube (62) through the fixing plate (55); the other end of the slide plate (54) is connected to the clamping plate (53); the end of the clamping plate (53) away from the slide plate (54) is in a J-shaped hook structure and can be movably clamped on the limiting rod (52).

4. The vertical dimension measuring device according to claim 3, characterized in that: A clamping joint (63) is formed on one end of the movable tube (62) facing the position-limiting tube (65), and the clamping joint (63) can be matched and inserted into the position-limiting tube (65).

5. The vertical dimension measuring device according to claim 4, characterized in that: The movable tube (62) is formed with a plurality of limiting plates (64) at one end facing the limiting tube (65), and the plurality of limiting plates (64) are circumferentially arranged on the outside of the clamping joint (63); the limiting tube (65) is formed with a plurality of limiting holes (66) at one end facing the movable tube (62), and the plurality of limiting plates (64) can be matched and plugged into the plurality of limiting holes (66).

6. The vertical dimension measuring device according to claim 1, characterized in that: The height adjustment mechanism (7) comprises a screw (71), a worm wheel (72), a worm (73) and a handle (74); the worm (73) is rotatably embedded in the workbench (1), one end of the worm (73) extends into another mounting groove (101), and the other end of the worm (73) extends to the outside of the workbench (1) and is fixedly connected to the handle (74); the worm wheel (72) is rotatably arranged in another mounting groove (101) and is meshed and connected to the worm (73); the lower end of the screw (71) is detachably screwed to the top of the worm wheel (72) and rotates synchronously with the worm wheel (72) coaxially, and the screw (71) is arranged parallel to the side of the fixed rod (4); the measuring device body is liftably arranged on the screw (71) and the fixed rod (4).

7. The vertical dimension measuring device according to claim 6, characterized in that: The measuring device body comprises a display screen (8), a fixing column (9), a connecting head (10), a mounting plate (11), a measuring instrument (12) and an instrument panel (13); the display screen (8) is arranged on a screw rod (71) and a fixing rod (4) in a liftable manner, the fixing column (9) is installed through one end of the housing of the display screen (8), one end of the mounting plate (11) is connected to the bottom of the fixing column (9) through the connecting head (10), the measuring instrument (12) is connected to the other end of the mounting plate (11), and the instrument panel (13) is arranged on the measuring instrument (12).

8. The vertical dimension measuring device according to claim 7, characterized in that: A screw hole matching the screw rod (71) is formed in one end of the housing of the display screen (8), and the screw hole is located beside the fixing column (9), so that the housing of the display screen (8) and the screw rod (71) are threadedly connected; a through hole (81) is formed at the other end of the housing of the display screen (8), and the fixing rod (4) passes through the through hole (81).

9. The vertical dimension measuring device according to any one of claims 6 to 8, characterized in that: The tops of the screw rod (71) and the fixing rod (4) are both provided with anti-slip limit plates (14), and the top of the display screen (8) can contact the anti-slip limit plates (14).

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