Steel bar distance gauge

Abstract

The utility model discloses a steel bar distance marking instrument which comprises an operation platform used for being stably supported on the working ground, an installation driving frame, a clamping fixing frame and a distance marking pile used for conducting distance marking on steel bars, wherein the installation driving frame and the clamping fixing frame are arranged on the operation platform side by side in a supporting mode at intervals. The clamping and fixing frame is used for supporting, clamping and fixing steel bars with different outer diameters. The gauge piles are connected to the mounting driving frame and used for sliding and fixing in the length direction of the clamped and fixed steel bars under the action of the mounting driving frame. The steel bar distance gauge comprises the clamping fixing frame, and the clamping fixing frame can support, clamp and fix steel bars with different outer diameters, so that when the steel bars with different outer diameters need to be detected, different distance gauges do not need to be replaced according to the outer diameters of the steel bars; by adopting the steel bar distance gauge, steel bars with different sizes can be clamped and mounted, so that the detection operation is simple and convenient, and the adaptability of the distance gauge is high.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering detection, in particular to a steel bar gauge. Background Art

[0002] The rebar gauge is a tool used in engineering inspection to measure the spacing, diameter and thickness of rebar cover. It is essential to ensure the safety and stability of building structures. By using the rebar gauge, engineers and construction workers can accurately detect whether the layout of the rebar meets the design requirements and whether it meets the relevant building specifications and standards.

[0003] When measuring the length of steel bars, the existing steel bar gauge needs to fix the steel bars and install them. However, the sizes of the steel bars are inconsistent. When they need to be installed, the gauge needs to be replaced according to their sizes. The operation is cumbersome and the gauge has poor adaptability. In addition, the steel bar gauge generates vibrations during operation, which will cause its relative operating position to shift, thereby affecting the operating efficiency and quality.

[0004] Therefore, it is necessary to design corresponding technical solutions. Utility Model Content

[0005] The utility model provides a steel bar gauge to solve the technical problems of the existing gauge that different gauges need to be replaced according to the size of the steel bar for measurement, which makes the detection operation troublesome and the gauge has poor adaptability.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A steel bar gauge comprises: an operating platform for stably supporting on a working ground, a mounting drive frame and a clamping and fixing frame arranged side by side and at intervals on the operating platform, and a gauge pile for marking the steel bars; the clamping and fixing frame is used to support, clamp and fix steel bars of different outer diameters; the gauge pile is connected to the mounting drive frame so as to slide and fix along the length direction of the clamped and fixed steel bars under the action of the mounting drive frame.

[0008] Furthermore, the clamping and fixing frame includes two assembly chucks arranged at intervals along the length direction of the steel bar, and each chuck includes a first installation box fixedly supported on the operating platform, a first driving mechanism arranged in the first installation box, and a chuck for clamping and fixing the steel bar; the chucks are respectively connected to the first installation box and the first driving mechanism, so as to be relatively opened or closed under the action of the first driving mechanism, so as to clamp and fix steel bars of different outer diameters.

[0009] Furthermore, the first installation box is hollow, and a first opening is provided on its outer wall, which passes through the wall and extends along its height direction; the first driving mechanism includes a first screw rod vertically and rotatably installed in the first installation box, a first driving machine connected to one end of the first screw rod, and a first installation rod threadedly connected to the outer circle of the first screw rod, and the cantilever end of the first installation rod extends outward from the first opening; the chuck includes a fixed splint and a movable splint arranged opposite to each other up and down, the fixed splint is fixedly connected to the outer wall of the first installation box, and the movable splint is fixedly connected to the cantilever end of the first installation rod.

[0010] Furthermore, the installation drive frame includes a mounting bracket fixedly supported on the operating platform, a driving frame, and a second driving mechanism connected to the driving frame; the driving frame is mounted on the mounting bracket, and slides and is fixed along the length direction of the clamped and fixed steel bars; the number of gauge piles is two, and the two gauge piles are respectively connected to the second driving mechanism, so as to be relatively close to or away from each other under the action of the second driving mechanism.

[0011] Furthermore, the mounting bracket includes two support plates that are relatively spaced and vertically supported on the operating platform, and a second mounting rod fixedly connected between the two support plates; the driving frame includes a slider slidably mounted on the outer circle of the second mounting rod, and an adjusting screw threaded through the slider; the second driving mechanism is connected to the slider, and the adjusting screw is used to press against the second mounting rod so that the slider is fixed on the second mounting rod after sliding.

[0012] Furthermore, a mounting hole is provided in the slider for the second mounting rod to pass through, and the wall surface of the mounting hole is concave to form a slot extending along its sliding direction and passing through its front and rear end surfaces; the second mounting rod includes a rod body passing through the mounting hole, and a clamping strip connected to the outer circle of the rod body and used to be clamped in the clamping slot, and the outer circle of the rod body is also provided with slots that are spaced in sequence along its length direction and are concave; the slider is slidably passed through the rod body through its mounting hole, and the clamping strip is clamped in the clamping slot to prevent the slider from rotating; after the adjusting screw is inserted into the slot, the slider is fixed to the second mounting rod.

[0013] Furthermore, the driving frame also includes a second mounting box fixed to the slider, the second mounting box is hollow, and a second opening that penetrates the wall and extends along its length direction is opened on its outer wall; the second driving mechanism includes a second screw rod that is laterally and rotatably mounted in the second mounting box, a second driving machine connected to one end of the second screw rod, a limit block that is mounted on the outer circle of the second screw rod and fixed to the middle part of the second mounting box, and two third mounting rods that are threadedly connected to the outer circle of the second screw rod and are respectively arranged on both sides of the limit block; the thread rotation directions of the second screw rods on both sides of the limit block are opposite; the cantilever end of the third mounting rod extends outward from the second opening, and the gauge pile is vertically fixed on the cantilever end of the third mounting rod.

[0014] Furthermore, the operating platform includes two base plates that are supported on the working ground and relatively spaced apart, two upright plates vertically fixed on each base plate, and a mounting table horizontally supported on the top of the two upright plates; the mounting drive frame and the clamping fixing frame are respectively supported on the mounting table.

[0015] Furthermore, the bottom plate is in the shape of a hollow box, and a third opening penetrating the wall surface is respectively provided on its two opposite outer walls; the steel bar gauge also includes an auxiliary support frame that serves as an auxiliary support, and the auxiliary support frame includes two support plates arranged opposite to each other, rollers rotatably mounted on each support plate, and a third driving mechanism for driving the two support plates to move relative to each other; the two support plates are respectively connected to the third driving mechanism, so that under the action of the third driving mechanism, they are respectively extended from the corresponding third openings and supported on the working ground by the rollers.

[0016] Furthermore, the third driving mechanism includes a third screw rod arranged transversely, a driven gear fixedly mounted in the middle of the third screw rod, a driving gear meshing with the driven gear, and a third driving machine fixed to the driving gear; the two ends of the third screw rod are respectively threadedly connected to the two support plates, and the spiral directions of the third screw rods located on both sides of the driven gear are opposite.

[0017] The utility model has the following beneficial effects:

[0018] The steel bar gauge of the utility model comprises a clamping and fixing frame, which can support, clamp and fix steel bars of different outer diameters. Therefore, when steel bars of different outer diameters need to be tested, there is no need to replace different gauges according to the outer diameters of the steel bars. The steel bar gauge of the utility model can be used to clamp and install steel bars of different sizes, thereby making the testing operation simple and convenient, and the gauge has high adaptability.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the spatial structure of a steel bar gauge according to a preferred embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the chuck;

[0023] Figure 3 is a schematic structural diagram of a second driving mechanism;

[0024] Figure 4 This is a schematic diagram of the internal structure of the drive frame;

[0025] Figure 5 Schematic diagram of the internal structure of the auxiliary support frame.

[0026] Legend:

[0027] 10. Operating platform; 11. Bottom plate; 12. Vertical plate; 13. Mounting table;

[0028] 20. Gauge pile;

[0029] 30. chuck; 31. first mounting box; 32. first driving mechanism; 321. first screw rod; 322. first driving machine; 323. first mounting rod; 33. chuck; 331. fixed clamping plate; 332. movable clamping plate;

[0030] 40. mounting bracket; 41. support plate; 42. second mounting rod; 421. slot;

[0031] 50, driving frame; 51, sliding block; 511, mounting hole; 512, slot; 52, adjusting screw; 53, second mounting box;

[0032] 60. Second driving mechanism; 61. Second screw rod; 62. Second driving machine; 63. Limit block; 64. Third mounting rod;

[0033] 70. Auxiliary support frame; 71. Support plate; 72. Roller; 73. Third driving mechanism; 731. Third screw rod; 732. Driven gear; 733. Driving gear; 734. Third driving machine. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0035] Reference Figure 1 The preferred embodiment of the utility model provides a steel bar gauge, comprising: an operating platform 10 for stably supporting on the working ground, a mounting drive frame and a clamping and fixing frame arranged side by side and spaced on the operating platform 10, and a gauge pile 20 for measuring the steel bar. The clamping and fixing frame is used to support, clamp and fix steel bars of different outer diameters. The gauge pile 20 is connected to the mounting drive frame, so as to slide and fix along the length direction of the clamped and fixed steel bar under the action of the mounting drive frame.

[0036] The steel bar gauge of the utility model comprises a clamping and fixing frame, which can support, clamp and fix steel bars of different outer diameters. Therefore, when steel bars of different outer diameters need to be tested, there is no need to replace different gauges according to the outer diameters of the steel bars. The steel bar gauge of the utility model can be used to clamp and install steel bars of different sizes, thereby making the testing operation simple and convenient, and the gauge has high adaptability.

[0037] Alternatively, if Figure 1 As shown, the clamping and fixing frame includes two assembly clamps 30 arranged at intervals along the length direction of the steel bar, and each clamping head 30 includes a first installation box 31 fixedly supported on the operating platform 10, a first driving mechanism 32 arranged in the first installation box 31, and a clamp 33 for clamping and fixing the steel bar. The clamp 33 is respectively connected to the first installation box 31 and the first driving mechanism 32, so as to be relatively opened or closed under the action of the first driving mechanism 32, so as to clamp and fix steel bars of different outer diameters.

[0038] In this option, if Figure 2 As shown, the first installation box 31 is hollow, and a first opening penetrating the wall and extending in the height direction thereof is provided on its outer side wall. The first driving mechanism 32 includes a first screw rod 321 vertically and rotatably installed in the first installation box 31, a first driving machine 322 connected to one end of the first screw rod 321, and a first installation rod 323 threadedly connected to the outer circle of the first screw rod 321, and the cantilever end of the first installation rod 323 extends outward from the first opening. The clamp 33 includes a fixed clamp plate 331 and a movable clamp plate 332 arranged opposite to each other in the upper and lower parts, the fixed clamp plate 331 is fixedly connected to the outer side wall of the first installation box 31, and the movable clamp plate 332 is fixedly connected to the cantilever end of the first installation rod 323. During operation, the first driving machine 322 (generally an AC motor in the prior art) drives the first screw 321 to rotate, and the first screw 321 then drives the first mounting rod 323 to move up and down along its height direction, and the first mounting rod 323 then synchronously drives the movable clamping plate 332 to move up and down synchronously, and then move closer to or away from the fixed clamping plate 331, so as to realize the opening and closing of the clamp 33, so as to clamp and fix steel bars of different outer diameters. Preferably, as Figure 1 As shown, the fixed clamping plate 331 and the movable clamping plate 332 are both arc-shaped plates to stably clamp the steel bars.

[0039] Alternatively, if Figure 1As shown, the installation drive frame includes a mounting bracket 40 fixedly supported on the operating platform 10, a drive frame 50, and a second drive mechanism 60 connected to the drive frame 50. The drive frame 50 is mounted on the mounting bracket 40, and is slid and fixed along the length direction of the clamped and fixed steel bar. There are two gauge piles 20, and the two gauge piles 20 are respectively connected to the second drive mechanism 60, so as to be relatively close to or away from each other under the action of the second drive mechanism 60, so as to facilitate the gauge piles 20 to operate according to different gauge lengths.

[0040] In this option, if Figure 1 As shown, the mounting bracket 40 includes two support plates 41 which are relatively spaced and vertically supported on the operating platform 10, and a second mounting rod 42 which is fixedly connected between the two support plates 41. Figure 4 As shown, the driving frame 50 includes a slider 51 slidably mounted on the outer circle of the second mounting rod 42, and an adjusting screw 52 threadedly penetrated in the slider 51. The second driving mechanism 60 is connected to the slider 51, and the adjusting screw 52 is used to press against the second mounting rod 42, so that the slider 51 is fixed on the second mounting rod 42 after sliding. When working, first move the slider 51 to a suitable position on the second mounting rod 42, and then tighten the adjusting screw 52 so that the inner extension end of the adjusting screw 52 presses against the second mounting rod 42, thereby fixing the slider 51 on the second mounting rod 42.

[0041] Preferably, if Figure 4 As shown, a mounting hole 511 is provided in the slider 51 for the second mounting rod 42 to pass through, and the wall surface of the mounting hole 511 is concave to form a card slot 512 extending through its front and rear end surfaces along its sliding direction. The second mounting rod 42 includes a rod body passing through the mounting hole 511, and a card strip connected to the outer circle of the rod body and used to be inserted into the card slot 512. The outer circle of the rod body is also provided with slots 421 that are arranged in sequence and concave along its length direction. The slider 51 is slidably passed through the rod body through its mounting hole 511, and the card strip is clamped in the card slot 512 to prevent the slider 51 from rotating. After the adjusting screw 52 is inserted into the slot 421, the slider 51 is fixed to the second mounting rod 42. In this preferred solution, the card strip on the second mounting rod 42 cooperates with the card slot 512 in the slider 51, thereby ensuring that the slider 51 slides smoothly on the second mounting rod 42, guiding the sliding of the slider 51 and preventing the slider 51 from rotating relative to the second mounting rod 42. During operation, the slider 51 is first moved to a suitable position on the second mounting rod 42, and then the adjusting screw 52 is tightened so that the inner end of the adjusting screw 52 is inserted into the corresponding slot 421 provided on the second mounting rod 42, thereby stably fixing the slider 51 on the second mounting rod 42.

[0042] In this option, if Figure 3As shown, the drive frame 50 also includes a second installation box 53 fixed to the slider 51. The second installation box 53 is hollow, and a second opening penetrating the wall and extending along its length direction is provided on its outer wall. The second driving mechanism 60 includes a second screw 61 installed horizontally and rotatably in the second installation box 53, a second driving machine 62 connected to one end of the second screw 61, a stopper 63 installed on the outer circle of the second screw 61 and fixed to the middle of the second installation box 53, and two third installation rods 64 threadedly connected to the outer circle of the second screw 61 and arranged on both sides of the stopper 63. The thread rotation directions of the second screw 61 on both sides of the stopper 63 are opposite. The cantilever end of the third installation rod 64 extends outward from the second opening, and the gauge pile 20 is vertically fixed on the cantilever end of the third installation rod 64. During operation, the second driving machine 62 (generally an AC motor in the prior art) drives the second screw 61 to rotate, and the second screw 61 drives the two third mounting rods 64 installed thereon to move relatively close to or away from each other, thereby making the two gauge piles 20 installed in the two third mounting rods 64 relatively close to or away from each other, adjusting the distance between the two gauge piles 20, thereby facilitating the gauge piles 20 to operate according to different gauge lengths.

[0043] Alternatively, if Figure 1 As shown, the operating platform 10 includes two bottom plates 11 for supporting on the working ground and arranged relatively at intervals, two vertical plates 12 vertically fixed on each bottom plate 11, and a mounting platform 13 horizontally supported on the top of the two vertical plates 12. The mounting drive frame and the clamping and fixing frame are respectively supported on the mounting platform 13.

[0044] In this option, if Figure 1 As shown, the bottom plate 11 is in the shape of a hollow box, and a third opening penetrating the wall is provided on each of the two opposite outer side walls. The steel bar gauge also includes an auxiliary support frame 70 that plays an auxiliary supporting role, and the auxiliary support frame 70 includes two support plates 71 arranged opposite to each other, a roller 72 rotatably mounted on each support plate 71, and a third driving mechanism 73 for driving the two support plates 71 to move relative to each other. The two support plates 71 are respectively connected to the third driving mechanism 73, so that they are extended from the corresponding third openings respectively under the action of the third driving mechanism 73 and supported on the working ground by the roller 72. In this optional solution, the third driving mechanism 73 drives the two support plates 71 to move outward from the opposite sides of the bottom plate 11 and be supported on the working ground, thereby increasing the support area of ​​the bottom plate 11, and further effectively reducing the deviation of the operating platform 10 and the working position caused by the vibration generated during the gauge pile operation.

[0045] In a specific embodiment of this optional solution, Figure 5As shown, the third driving mechanism 73 includes a third screw rod 731 arranged transversely, a driven gear 732 fixedly mounted in the middle of the third screw rod 731, a driving gear 733 meshing with the driven gear 732, and a third driving machine 734 fixed to the driving gear 733. Both ends of the third screw rod 731 are respectively threadedly connected to the two support plates 71, and the spiral directions of the third screw rods 731 located on both sides of the driven gear 732 are opposite. During operation, the third driving machine 734 (generally an AC motor in the prior art) is started, and then drives the driving gear 733 to rotate through its output shaft, and the driving gear 733 then drives the driven gear 732 to rotate through external engagement, and the driven gear 732 drives the third screw 731 to rotate when it rotates, so that the two support plates 71 are relatively separated from each other so that they extend outward from the third openings opened on the base plate 11 and are supported on the working ground by the rollers 72, thereby increasing the support area of ​​the base plate 11 and reducing the deviation of the operating platform 10 and the working position caused by the vibration generated when the gauge pile 20 is operated.

[0046] The working principle of the steel bar gauge of the utility model is as follows: when in use, firstly place the steel bar between the fixed clamping plate 331 and the movable clamping plate 332, then activate the first driving machine 322, drive the first mounting rod 323 to move upward through the first screw rod 321, so that the movable clamping plate 332 cooperates with the fixed clamping plate 331 to clamp the steel bar;

[0047] At the same time, the slider 51 is moved to adjust the position of the gauge pile 20. After the adjustment is completed, the adjusting screw 52 is rotated to make its inner end enter the slot 421 to fix the slider 51. Then, the second driving machine 62 is activated to drive the two third mounting rods 64 to move to both sides or the middle through the second screw 61 to adjust the distance between the two gauge piles 20, so as to facilitate the gauge piles 20 to operate according to different gauge lengths.

[0048] Before the operation, the third driving motor 734 is also activated to drive the driving gear 733 to rotate. The driving gear 733 and the driven gear 732 cooperate with each other to drive the two support plates 71 to move outward from the inside of the base plate 11 through the third screw 731, so that the support area of ​​the base plate 11 is expanded, which can reduce the vibration generated during the operation of the gauge pile 20 and cause the deviation of the operating platform 10 and the working position.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel bar gauge, characterized in that: include: An operating platform (10) for stably supporting the working ground, a mounting drive frame and a clamping and fixing frame arranged side by side and at intervals on the operating platform (10), and a gauge pile (20) for measuring the length of the steel bars; The clamping fixture is used to support, clamp and fix steel bars of different outer diameters; The gauge pile (20) is connected to the installation drive frame so as to slide and be fixed along the length direction of the clamped and fixed steel bar under the action of the installation drive frame.

2. The steel bar gauge according to claim 1, characterized in that: The clamping and fixing frame comprises two assembly clamps (30) arranged at intervals along the length direction of the steel bar, each clamping head (30) comprises a first installation box (31) fixedly supported on the operating platform (10), a first driving mechanism (32) arranged in the first installation box (31), and a clamp (33) for clamping and fixing the steel bar; The clamp (33) is respectively connected to the first installation box (31) and the first driving mechanism (32) so as to be relatively opened or closed under the action of the first driving mechanism (32) so as to clamp and fix steel bars with different outer diameters.

3. The steel bar gauge according to claim 2, characterized in that: The first installation box (31) is hollow, and its outer wall is provided with a first opening penetrating through the wall surface and extending along its height direction; The first driving mechanism (32) comprises a first screw rod (321) vertically and rotatably mounted in the first mounting box (31), a first driving machine (322) connected to one end of the first screw rod (321), and a first mounting rod (323) threadedly connected to the outer circle of the first screw rod (321), wherein the cantilever end of the first mounting rod (323) extends outward from the first opening; The clamp (33) comprises a fixed clamp (331) and a movable clamp (332) which are arranged opposite to each other up and down. The fixed clamp (331) is fixedly connected to the outer wall of the first installation box (31), and the movable clamp (332) is fixedly connected to the cantilever end of the first installation rod (323).

4. The steel bar gauge according to claim 1, characterized in that: The installation drive frame comprises a mounting bracket (40) fixedly supported on the operating platform (10), a drive frame (50), and a second drive mechanism (60) connected to the drive frame (50); The driving frame (50) is mounted on the mounting bracket (40) and is slidable and fixed along the length direction of the clamped and fixed steel bar; There are two gauge piles (20), and the two gauge piles (20) are respectively connected to the second driving mechanism (60) so as to be relatively close to or far away from each other under the action of the second driving mechanism (60).

5. The steel bar gauge according to claim 4, characterized in that: The mounting bracket (40) comprises two supporting plates (41) which are arranged relatively spaced apart and vertically supported on the operating platform (10), and a second mounting rod (42) which is fixedly connected between the two supporting plates (41); The driving frame (50) comprises a sliding block (51) slidably mounted on the outer circle of the second mounting rod (42), and an adjusting screw (52) threadedly penetrated in the sliding block (51); The second driving mechanism (60) is connected to the slider (51), and the adjusting screw (52) is used to abut against the second mounting rod (42) so that the slider (51) is fixed on the second mounting rod (42) after sliding.

6. The steel bar distance gauge according to claim 5, characterized in that: The slider (51) is provided with a mounting hole (511) for the second mounting rod (42) to pass through, and the wall surface of the mounting hole (511) is concave to form a clamping groove (512) extending along the sliding direction and penetrating through the front and rear end surfaces thereof; The second mounting rod (42) comprises a rod body inserted into the mounting hole (511), and a clamping strip connected to the outer circle of the rod body and used for clamping into the clamping groove (512); the outer circle of the rod body is also provided with recessed slots (421) arranged in sequence at intervals along its length direction; The slider (51) is slidably mounted on the rod body through its mounting hole (511), and a clamping strip is clamped in the clamping groove (512) to prevent the slider (51) from rotating. After the adjusting screw (52) is inserted into the slot (421), the slider (51) is fixed on the second mounting rod (42).

7. The steel bar gauge according to claim 5, characterized in that: The driving frame (50) further comprises a second installation box (53) fixed to the slider (51); the second installation box (53) is hollow and has an outer wall provided with a second opening penetrating through the wall and extending along the length direction thereof; The second driving mechanism (60) comprises a second screw rod (61) which is laterally and rotatably mounted in the second mounting box (53), a second driving machine (62) connected to one end of the second screw rod (61), a stop block (63) which is mounted on the outer circle of the second screw rod (61) and fixed to the middle of the second mounting box (53), and two third mounting rods (64) which are threadedly connected to the outer circle of the second screw rod (61) and are respectively arranged on both sides of the stop block (63); The threads of the second screw rods (61) located on both sides of the limiting block (63) have opposite rotation directions; The cantilever end of the third mounting rod (64) extends outward from the second opening, and the gauge pile (20) is vertically fixed on the cantilever end of the third mounting rod (64).

8. The steel bar distance gauge according to claim 1, characterized in that: The operating platform (10) comprises two bottom plates (11) for supporting on the working ground and arranged relatively at a distance, two vertical plates (12) vertically fixed on the bottom plates (11), and a mounting platform (13) horizontally supported on the top ends of the two vertical plates (12); The installation drive frame and the clamping and fixing frame are respectively supported on the installation platform (13).

9. The steel bar distance gauge according to claim 8, characterized in that: The bottom plate (11) is in the shape of a hollow box, and two opposite outer side walls thereof are each provided with a third opening penetrating through the wall surface; The steel bar gauge also includes an auxiliary support frame (70) for auxiliary support, wherein the auxiliary support frame (70) includes two support plates (71) arranged opposite to each other, a roller (72) rotatably mounted on each support plate (71), and a third driving mechanism (73) for driving the two support plates (71) to move relative to each other; The two support plates (71) are respectively connected to the third driving mechanism (73) so as to extend out from the corresponding third openings under the action of the third driving mechanism (73) and be supported on the working ground through the rollers (72).

10. The steel bar distance gauge according to claim 9, characterized in that: The third driving mechanism (73) comprises a third screw rod (731) arranged transversely, a driven gear (732) fixedly mounted in the middle of the third screw rod (731), a driving gear (733) meshing with the driven gear (732), and a third driving machine (734) fixed to the driving gear (733); Two ends of the third screw rod (731) are respectively threadedly connected to the two support plates (71), and the spiral directions of the third screw rods (731) located on both sides of the driven gear (732) are opposite.

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