Passive coding steel ruler

Abstract

The utility model provides a passive coding steel ruler which comprises a plurality of steel ruler base plates which are detachably connected end to end, a connecting rod is rotationally connected to the position, close to one end, of the back face of each steel ruler base plate, an arc-shaped clamp is fixedly connected to one side of each connecting rod, and the plane where the arc-shaped clamps are located is parallel to the connecting rods. The other end of the connecting rod is elastically connected with a limiting rod, a groove close to the other end is formed in the steel ruler base plate, and an arc-shaped groove connected with the arc-shaped clamp in a clamped mode is formed in the side, close to the other end of the steel ruler base plate, in the groove. The grooves, the arc-shaped grooves, the connecting rods, the arc-shaped clamps and the limiting rods are arranged on the back faces of the steel ruler base plates, so that any screwing operation is not needed when the two adjacent steel ruler base plates are connected end to end, and end-to-end fastening connection and detachment of the two adjacent steel ruler base plates can be achieved by rotating the connecting rods and then pressing the arc-shaped clamps in a matched mode. The device has the advantage of being more convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of coding steel rulers, in particular to a passive coding steel ruler. Background Art

[0002] With the rapid development of industrial automation, the demand for automated, unmanned operation of mechanical equipment is increasing. This is especially true for heavy equipment operating in harsh environments and difficult to retrofit. The need for coded cable positioning systems with track detection capabilities is increasing. Passive coded steel rulers are used for track detection. One side of this ruler features a pin-grid-like sketch area. A reader on a moving device can accurately locate the device by reading this sketch.

[0003] Currently used passive coded steel rulers are typically standard in structure, meaning they have a specific length. The passive coded steel rulers used in the entire positioning detection system are composed of multiple short steel ruler sections, fixed end-to-end, to facilitate replacement if a section becomes damaged. However, these sections are typically fastened using bolts and connecting plates. This requires tightening, and the numerous locations involved make assembly and disassembly of these passive coded steel rulers labor-intensive.

[0004] To this end, the utility model provides a passive coding steel ruler. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a passive coding steel ruler to solve the problems raised in the above-mentioned background technology. The passive coding steel ruler of the present invention has the advantages of more convenient and labor-saving assembly and disassembly operations.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a passive coding steel ruler, comprising several steel ruler substrates that are detachably connected at both ends, a connecting rod is rotatably connected to the back of the steel ruler substrate near one end, an arc-shaped card is fixedly connected to one side of the connecting rod, the plane where the arc-shaped card is located is parallel to the connecting rod, the other end of the connecting rod is elastically connected to a limiting rod, a groove near the other end is provided in the steel ruler substrate, and an arc groove that is engaged with the arc-shaped card is provided on one side of the groove near the other end of the steel ruler substrate.

[0007] Furthermore, a hinge seat is fixedly connected to the back of the steel ruler base plate, and a hinge shaft near one end is welded to the outer peripheral wall of the connecting rod, and the hinge shaft is rotatably connected to the hinge seat.

[0008] Furthermore, a guide hole is provided at the other end of the connecting rod for sliding cooperation with the limit rod, and a stopper is fixedly connected to one end of the limit rod located outside the connecting rod, and a pad for cooperating with the stopper is fixedly provided on the back of the steel ruler base plate, and a limit block is provided on the external fixed sleeve of the connecting rod, and the limit block and the stopper are located on both sides of the hinge seat.

[0009] Furthermore, a support spring is sleeved in the guide hole, one end of which is against the limiting rod.

[0010] Furthermore, a connecting shaft is welded to one side of the connecting rod, one end of the connecting shaft is fixedly connected to the middle part of the outer wall of the arc-shaped card, and the opening direction of the arc-shaped card faces the hinge seat.

[0011] Furthermore, the arc-shaped clamp is C-shaped and has shifting blocks welded to its outer wall near both ends.

[0012] Furthermore, the other end of the connecting rod is axially slidably connected to a stop shaft, and the free end of the stop shaft is fixedly connected to a second stop block.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides grooves, arc-shaped grooves, connecting rods, arc-shaped clips and limit rods on the back of the steel ruler base plate, so that when two adjacent sections of the steel ruler base plate are connected end to end, no screwing operation is required. By rotating the connecting rod and then pressing the arc-shaped clip, the end to end fastening connection and separation of the two adjacent sections of the steel ruler base plate can be achieved, which has the advantage of more convenient separation and combination.

[0015] 2. The utility model connects the blocking shaft by axial sliding at the other end of the connecting rod. The blocking shaft cooperates with the limit rod to ensure that the two adjacent steel ruler base plates can maintain a collinear state after being connected, thereby ensuring the accuracy of the combined passive coding steel ruler code reading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a passive coding steel ruler of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of the arc groove and groove of a passive coding steel ruler of the present invention;

[0018] Figure 3 This is a cross-sectional view of the sliding fit between the connecting rod and the limiting rod of a passive coding steel ruler of the present invention;

[0019] In the figure: 1. steel ruler base plate; 11. groove; 111. arc groove; 12. hinge seat; 13. pad; 2. connecting rod; 21. arc clamp; 211. shift block; 22. hinge shaft; 23. guide hole; 231. support spring; 24. connecting shaft; 25. limit block; 3. limit rod; 31. stop block 1; 4. stop shaft; 41. stop block 2. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 3 The present invention provides a technical solution: a passively encoded steel ruler comprising a plurality of detachably connected steel ruler base plates (1). Specifically, the passively encoded steel ruler is assembled from multiple steel ruler base plates (1) connected end to end. A ceramic magnet is positioned on the front side of each steel ruler base plate, and a pin-grid-shaped sketching area is formed on the ceramic magnet. A mobile device reads the pin-grid-shaped sketching area using a positioning reader mounted on the magnet. If a steel ruler base plate (1) becomes damaged, that section of the steel ruler can be directly replaced, reducing equipment downtime for maintenance.

[0022] In the present technical solution, a connecting rod 2 is rotatably connected to the back of the steel ruler base plate 1 near one end. In a specific implementation, it is preferred that a hinge seat 12 is fixedly connected to the back of the steel ruler base plate 1, and a hinge shaft 22 near one end is welded to the outer peripheral wall of the connecting rod 2. The hinge shaft 22 is rotatably connected to the hinge seat 12. An arc-shaped card 21 is fixedly connected to one side of the connecting rod 2. The plane where the arc-shaped card 21 is located is parallel to the connecting rod 2. When the connecting rod 2 is parallel to the steel ruler base plate 1, the plane where the arc-shaped card 21 is located is parallel to or coincides with the plane where the steel ruler base plate 1 is located. The other end of the connecting rod 2 is elastically connected to a limit rod 3. This limit rod 3 is set close to the steel ruler base plate 1. After the limit rod 3 is pulled out, the connecting rod 2 is in a state of being parallel to the steel ruler base plate 1. When the limit rod 3 slides toward the connecting rod 2 to the extreme position, the connecting rod 2 can rotate freely. In a specific implementation, it is preferred that the other end of the connecting rod 2 is provided with a guide hole 23 that slidably engages with the limiting rod 3. A stopper 31 is fixedly connected to the limiting rod 3 at one end located outside the connecting rod 2. A pad 13 is fixedly provided on the back of the steel ruler base 1 for use with the stopper 31. The stopper 31 functions to limit the swing of the connecting rod 2. That is, when the stopper 31 abuts the stopper 31 on the back of the steel ruler base 1, the connecting rod 2 and the steel ruler base 1 are parallel. A stopper 25 is fixedly provided on the outside of the connecting rod 2. The stopper 25 and the stopper 31 are located on both sides of the hinge seat 12. The stopper 31 and the stopper 25 simultaneously abut against the back of the steel ruler base 1. This arrangement has the function of locking the connecting rod 2 parallel to the steel ruler base 1. The guide hole 23 is provided with a support spring 231, one end of which abuts against the limiting rod 3. The support spring 231 applies an elastic thrust to the limiting rod 3 to slide outward.

[0023] The steel ruler base plate 1 has a groove 11 formed near the other end. A curved slot 111 is formed on one side of the groove 11 near the other end of the steel ruler base plate 1, which engages with the curved clip 21. Thus, two adjacent steel ruler base plates 1 are securely connected end to end through the snap-fitting engagement between the curved clip 21 and the curved slot 111. To separate the two adjacent steel ruler base plates 1, simply peel the curved clip 21 off the curved slot 111.

[0024] Furthermore, a connecting shaft 24 is welded to one side of the connecting rod 2, and one end of the connecting shaft 24 is fixedly connected to the middle of the outer wall of the arc card 21. The opening direction of the arc card 21 is toward the hinge seat 12, and the arc card 21 is controlled to enter the groove 11 after compression. The groove 11 is a circular groove, and its inner aperture is slightly larger than the maximum outer diameter of the arc card 21 after compression. After the arc card 21 is reset and opened, the part near the free end will enter the arc groove 111 and press the arc groove 111 at the same time. That is to say, the key to controlling the docking of the arc card 21 and the arc groove 111 is to control the elastic deformation of the arc card 21.

[0025] In this embodiment, the arc card 21 is C-shaped and its outer wall is welded with a shift block 211 near both ends. The function of the shift block 211 is to facilitate manual holding and pressing. After the arc card 21 enters the groove 11 and is stretched, the part near the free end will enter the arc groove 111. At this time, the arc card 21 will exert an elastic thrust on the arc groove 111. This elastic thrust causes the adjacent steel ruler substrate 1 joint surfaces to be tightly abutted.

[0026] In this embodiment, the other end of the connecting rod 2 is axially slidably connected to the stop shaft 4, and the free end of the stop shaft 4 is fixedly connected to the stop block 2 41. In specific implementation, a slideway that slides with the stop shaft 4 can be opened at the other end of the connecting rod 2. After the stop shaft 4 is pulled outward, the back of the steel ruler substrate 1 where the adjacent groove 11 is located is abutted. This arrangement has the effect of improving the bending strength of the connection between the adjacent steel ruler substrates 1, so that the entire passive encoding steel ruler is in or approximately in a straight line state.

[0027] Working principle: When one of the read-write areas of the passive coded steel ruler is damaged during use, the arc-shaped cards 21 at both ends of the steel ruler substrate 1 where the damaged area is located are manually pressed and deformed through two shifting blocks 211. At this time, the arc-shaped card 21 will be disengaged from the arc groove 111 after being compressed, and then the limit rod 3 is manually pressed from the back of the connecting rod 2. After the limit rod 3 is pressed, the arc-shaped card 21 is manually swung outward. At this time, the compressed arc-shaped card 21 is disengaged from the arc groove 111, and one end of the damaged steel ruler substrate 1 is split. The other end of the steel ruler substrate 1 can be split in this way.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A passive coding steel ruler, comprising a plurality of steel ruler substrates (1) detachably connected at the head and tail, characterized in that: A connecting rod (2) is rotatably connected to a position near one end of the back side of the steel ruler base plate (1); an arc-shaped clamp (21) is fixedly connected to one side of the connecting rod (2); the plane where the arc-shaped clamp (21) is located is parallel to the connecting rod (2); the other end of the connecting rod (2) is elastically connected to a limiting rod (3); a groove (11) near the other end is provided in the steel ruler base plate (1); an arc-shaped groove (111) is provided in the groove (11) on one side near the other end of the steel ruler base plate (1) and is clamped to the arc-shaped clamp (21).

2. The passive coding steel ruler according to claim 1, characterized in that: The back of the steel ruler base plate (1) is fixedly connected to a hinge seat (12), and the outer peripheral wall of the connecting rod (2) is welded with a hinge shaft (22) near one end, and the hinge shaft (22) and the hinge seat (12) are rotatably connected.

3. The passive coding steel ruler according to claim 2, characterized in that: The other end of the connecting rod (2) is provided with a guide hole (23) that is slidably matched with the limiting rod (3); one end of the limiting rod (3) located outside the connecting rod (2) is fixedly connected to a stopper (31); a backing plate (13) used in conjunction with the stopper (31) is fixedly provided on the back of the steel ruler base plate (1); a limiting block (25) is fixedly sleeved on the outside of the connecting rod (2); the limiting block (25) and the stopper (31) are located on both sides of the hinge seat (12).

4. The passive coding steel ruler according to claim 3, characterized in that: A support spring (231) is sleeved in the guide hole (23) and has one end abutting against the limiting rod (3).

5. The passive coding steel ruler according to claim 1, characterized in that: A connecting shaft (24) is welded to one side of the connecting rod (2), one end of the connecting shaft (24) is fixedly connected to the middle of the outer wall of the arc-shaped clamp (21), and the opening direction of the arc-shaped clamp (21) faces the hinge seat (12).

6. The passive coding steel ruler according to claim 5, characterized in that: The arc-shaped clamp (21) is C-shaped and has shifting blocks (211) welded to its outer wall near both ends.

7. The passive coding steel ruler according to claim 1, characterized in that: The other end of the connecting rod (2) is axially slidably connected to a stop shaft (4), and the free end of the stop shaft (4) is fixedly connected to a second stop block (41).

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