Gap measuring device

A gap measuring device, comprising:

• a base (1), adapted to be fixedly disposed on a measured object;
• a driving assembly, disposed on the base (1), the driving assembly including a first driving structure (2) and a second driving structure (3), the first driving structure (2) comprising a first moving part, the first moving part being capable of moving on the base (1) in a first direction, the second driving structure (3) being connected to the first moving part, the second driving structure (3) comprising a second moving part, the second moving part being capable of moving in a second direction relative to the first moving part, and the second direction being perpendicular to the first direction;
• a measuring mechanism (4), comprising a measuring rod bracket (401) disposed on the second moving part, as well as a first measuring rod (403) and a second measuring rod (404) which are hinged with the measuring rod bracket (401) through a measuring rod shaft (402), a first end of the first measuring rod (403) being provided with a first detection head (4031), a first end of the second measuring rod (404) being provided with a second detection head (1041), a second end of the second measuring rod (404) being provided with a pointer (405), the first detection head (4031) and the second detection head (4041) being located on the same side of the measuring rod bracket (401);
• a torsion spring (5), comprising a first fixed leg (501) and a second fixed leg (502), the first fixed leg (501) being connected to a second end of the first measuring rod (403), and the second fixed leg (502) being connected to the second end of the second measuring rod (404);
• and
• a scaleplate holder (6), one end of which being fixedly connected to the second end of the first measuring rod (403), the scaleplate holder (6) comprising a rectangular frame provided with scales (601), the pointer (405) being disposed in the rectangular frame, wherein
• the second end of the first measuring rod (403) is provided with a first recording pen (8);
• the pointer (405) is connected to a second recording pen (9);
• the first recording pen (8) is parallel to the second recording pen (9);
• the base (1) is further provided with a second slideway (106) and a third slideway (107);
• the second slideway (106) and the third slideway (107) are parallel to each other and are located at both ends of the base (1), respectively;
• a length extension direction of the second slideway (106) and the third slideway (107) is consistent or parallel to the second direction;
• the gap measuring device further comprises a tracing mechanism (10), the tracing mechanism (10) comprising:
• a first bracket (1001), slidably disposed on the second slideway (106);
• a second bracket (1002), slidably disposed on the third slideway (107);
• a tracing board (1003), connected between the first bracket (1001) and the second bracket (1002), the first recording pen (8) and the second recording pen (9) being both capable of contacting the tracing board (1003);
• and
• a fourth slideway (1004), two ends of which being respectively connected to the first bracket (1001) and the second bracket (1002), a length extension direction of the fourth slideway (1004) being parallel to the first direction, the rod measuring bracket (401) being connected to the fourth slideway (1004) through a slider (11), the slider (11) being slidably disposed on the fourth slideway (1004).