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CN-224230871-U - Brake drum inner hole form and position tolerance detection device

CN224230871UCN 224230871 UCN224230871 UCN 224230871UCN-224230871-U

Abstract

The utility model relates to the technical field of brake drum detection and discloses a brake drum inner hole form and position tolerance detection device, which comprises a detection table, wherein a detection mechanism is arranged on the upper surface of the detection table, a positioning mechanism is arranged on the outer side of the detection mechanism on the upper surface of the detection table, the positioning mechanism comprises a C-shaped plate, an adjusting rod is connected with the upper surface of the C-shaped plate in a penetrating and rotating way, a gear is fixedly connected with the lower end of the adjusting rod, a ratchet wheel is fixedly sleeved on the outer part of the adjusting rod above the C-shaped plate, a locking mechanism is arranged on the upper surface of the C-shaped plate and is positioned at the rear side of the adjusting rod, racks are connected on the left side surface and the right side surface of the inner part of the C-shaped plate in a sliding way, and one end of each rack is fixedly connected with a positioning plate.

Inventors

  • XU YIMING
  • LIU ZHENYUAN
  • LIU MINGQIANG

Assignees

  • 莱州金狮汽车配件有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (6)

  1. 1. The utility model provides a brake drum hole form and position tolerance detection device, including detecting platform (1), the upper surface of detecting platform (1) is provided with detection mechanism (2), its characterized in that, the upper surface of detecting platform (1) is located the outside of detection mechanism (2) and is provided with positioning mechanism (11), positioning mechanism (11) are including C template (12), the upper surface of C template (12) runs through and rotates and be connected with regulation pole (13), the lower extreme rigid coupling of regulation pole (13) has gear (14), and the outside of regulation pole (13) is located the top of C template (12) and has cup jointed ratchet (15), the upper surface of C template (12) is located the rear side of regulation pole (13) and is provided with locking mechanism (16), the equal sliding connection of inside left and right sides surface of C template (12) has rack (21), the one end rigid coupling of rack (21) has locating plate (22), two the opposite side surface of locating plate (22) all rigid coupling has elastic plate (23), one side surface rigid coupling that locating plate (22) was kept away from to elastic plate (23).
  2. 2. The brake drum inner hole form and position tolerance detection device according to claim 1, wherein the detection mechanism (2) comprises a rotating rod (3), a shell type bearing (4) is fixedly connected to the lower end of the rotating rod (3), a sliding sleeve (5) is movably sleeved outside the rotating rod (3), a first supporting bolt (6) is connected to the front surface of the sliding sleeve (5) in a penetrating threaded manner, a sliding tube (7) is fixedly connected to the rear end of the sliding sleeve (5), a second supporting bolt (8) is connected to the rear end of the upper surface of the sliding tube (7) in a penetrating threaded manner, a sliding rod (9) is movably connected to the inner portion of the sliding tube (7), and a value indicating table (10) is fixedly connected to the rear end of the sliding rod (9).
  3. 3. The brake drum inner hole form and position tolerance detection device according to claim 1, wherein the locking mechanism (16) comprises a spring (17), a fixed block (18) is fixedly connected to the rear end of the spring (17), a pawl (19) is fixedly connected to the front end of the spring (17), and a fixed rod (20) is movably connected to the inside of the left end of the pawl (19).
  4. 4. The brake drum inner hole form and position tolerance detection device according to claim 1, wherein the lower end of the C-shaped plate (12) is fixedly connected to the upper surface of the detection table (1), the C-shaped plate (12) is positioned on the left side of the detection mechanism (2), the gear (14) is in meshed connection with the rack (21), and the two positioning plates (22) are respectively positioned on the front side and the rear side of the detection mechanism (2).
  5. 5. The device for detecting the geometric tolerance of the inner hole of the brake drum according to claim 2, wherein the shell-type bearing (4) is fixedly connected to the upper surface of the detection table (1), the rear end of the first supporting bolt (6) is attached to the rotating rod (3), and the lower end of the second supporting bolt (8) is attached to the sliding rod (9).
  6. 6. A brake drum inner hole form and position tolerance detection device according to claim 3, wherein the pawl (19) is attached to the ratchet wheel (15), and the fixing block (18) and the fixing rod (20) are fixedly connected to the upper surface of the C-shaped plate (12).

Description

Brake drum inner hole form and position tolerance detection device Technical Field The utility model relates to the technical field of brake drum detection, in particular to a brake drum inner hole form and position tolerance detection device. Background The brake drum is a core component of an automobile brake system, and the inner hole form and position tolerance of the brake drum directly influences the contact uniformity of a brake shoe and a drum wall, so that the braking efficiency, the abrasion service life and the running safety are determined. In the prior art, a brake drum is generally required to be fixed through a fixture, a standard measuring part is rotated along the inner wall of the brake drum, or the standard measuring part is kept fixed, a motor is arranged on the fixture to drive the brake drum to rotate, and the brake drum tolerance detection scheme in the prior art has at least the following defects: 1. in measuring some tolerances, such as coaxiality, a brake drum or a standard measuring part needs to be rotated, and if a motor is used for driving the brake drum to rotate, higher energy consumption is required, so that equipment cost and energy consumption cost are increased; 2. The brake drum or the standard measuring piece is easy to deviate in the rotation process, the manufacturing errors of the brake drum and the tool clamp can also influence the measured value in the rotation process of the brake drum, the measured value is easy to distort, and the tolerance measurement precision is reduced. Chinese patent discloses brake drum tolerance detection device (grant bulletin number CN 219829690U), and this patent technology supports the location through location dabber and support face to brake drum, through setting up the angle between holding surface and horizontal plane, eliminates the influence of manufacturing error to tolerance detection, simultaneously, this angle has reduced the axial holding power that the brake drum receives for the brake drum rotates around the location dabber more easily, can rotate the brake drum by the manpower, is favorable to reducing brake drum pivoted energy consumption demand, improves tolerance detection convenience. However, the technology still has the obvious defects that the arc section and the straight section of the positioning mandrel are in a fixed design, and cannot be adaptively adjusted according to the size of the positioning hole of the brake drum, so that the suitability of the brake drum with different specifications is poor, gaps or over-tightening are easily generated during clamping, and the positioning reference is offset or the inner wall of the positioning hole is damaged. Disclosure of utility model The utility model aims to provide a brake drum inner hole form and position tolerance detection device so as to solve the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a brake drum hole form and position tolerance detection device, includes the detection platform, the upper surface of detection platform is provided with detection mechanism, the upper surface of detection platform is located detection mechanism's outside and is provided with positioning mechanism, positioning mechanism includes the C template, the upper surface of C template runs through and rotates and be connected with the regulation pole, the lower extreme rigid coupling of regulation pole has the gear, and the outside of adjusting the pole is located the fixed ratchet that has cup jointed of top of C template, the upper surface of C template is located the rear side of adjusting the pole and is provided with locking mechanical system, the equal sliding connection in inside left and right sides surface of C template has the rack, the one end rigid coupling of rack has the locating plate, two the equal rigid coupling of one side surface that the locating plate is relative has the elastic plate, the one side surface rigid coupling that the locating plate was kept away from to the elastic plate has the locating piece. As a still further scheme of the utility model, the detection mechanism comprises a rotating rod, wherein the lower end of the rotating rod is fixedly connected with a shell type bearing, a sliding sleeve is movably sleeved outside the rotating rod, the front surface of the sliding sleeve is connected with a first supporting bolt in a penetrating threaded manner, the rear end of the sliding sleeve is fixedly connected with a sliding tube, the rear end of the upper surface of the sliding tube is connected with a second supporting bolt in a penetrating threaded manner, the inside of the sliding tube is movably connected with a sliding rod, and the rear end of the sliding rod is fixedly connected with a value indicating meter. As a still further scheme of the utility model, the locking mechanism comprises a spring, a fixed block