Verification instrument locking device

Abstract

The utility model discloses a verification instrument locking device, which relates to the field of verification instruments and comprises a main meter frame. The upper part of the main meter frame is provided with a meter rod locking assembly. The lower portion of the main meter frame is provided with a sliding block matched with the sliding groove, the main meter frame is internally provided with an inner cavity, the inner cavity is provided with a locking rod, the middle of the locking rod is hinged to the inner cavity, the lower section of the locking rod is arranged corresponding to the side wall of the sliding block, and the side wall of the upper portion of the inner cavity is provided with a first screw hole communicated with the inside and the outside. A fastening bolt extends from the outside of the main meter frame and is arranged in the first screw hole in a matched mode, the front end of the fastening bolt abuts against the upper portion of the lock rod, the fastening bolt pushes the upper end of the lock rod, and the lower section of the lock rod swings towards the outer side of the sliding block. Through the arrangement of the swinging locking rod and the meter rod locking assembly, the main meter frame can be well fixed in the sliding groove of the base, the meter rod and the main meter frame are fixed, the fixing structure is stable and firm, disassembly is easy, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of calibrators, in particular to a locking device for a calibrator. Background Art

[0002] Calibrators include dial gauge calibrators and dynamometer calibrators. The current structural diagram of a calibrator is a multi-functional calibrator for dial gauges and micrometers disclosed in the patent document with the publication number of CN86205067U, which includes a base, a column (main dial gauge holder), and a dial gauge rod. The lower end of the column is arranged on the base, and the upper end of the column is provided with the dial gauge rod. During use, the positions of the column relative to the base and the dial gauge rod can be adjusted to a certain extent to facilitate better measurement. Currently, the base is usually provided with a chute, the column is slidably fitted in the chute, and the dial gauge rod is inserted through the column. However, currently, it is rather inconvenient to lock the position of the column relative to the base and the dial gauge rod, which affects the detection accuracy. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a locking device for a calibrator. By setting a swinging locking rod and a dial gauge rod locking assembly, the main dial gauge holder can be well fixed in the chute of the base, and the dial gauge rod can be fixed to the main dial gauge holder. The fixing structure is firm and reliable, the disassembly is simple, and the use is convenient.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a locking device for a calibrator, including a main dial gauge holder;

[0005] A dial gauge rod locking assembly is arranged on the upper part of the main dial gauge holder;

[0006] A slider adapted to the chute is arranged on the lower part of the main dial gauge holder,

[0007] An inner cavity is arranged inside the main dial gauge holder, the inner cavity extends downward to the side wall of the slider, a locking rod is arranged in the inner cavity, the middle part of the locking rod is hinged to the inner cavity, the lower section of the locking rod corresponds to the side wall of the slider, a first screw hole communicating inside and outside is arranged on the upper side wall of the inner cavity, a fastening bolt extends from the outside of the main dial gauge holder and is adapted to the first screw hole, the front end of the fastening bolt abuts against the upper part of the locking rod, the fastening bolt pushes the upper end of the locking rod, and the lower section of the locking rod swings towards the outside of the slider.

[0008] In this solution, the upper part of the main dial gauge holder is used to fix the dial gauge rod, and the lower part of the main dial gauge holder is fixed to the chute of the calibrator base. The locking rod arranged in the inner cavity can swing. The upper end is pushed by the fastening bolt, and the lower end of the locking rod swings towards the outside of the slider. The lower end of the locking rod will abut against the inner wall of the chute, thereby locking the slider relative to the chute. When the position needs to be moved, the fastening bolt is rotated in the reverse direction. Without the abutment of the fastening bolt, the locking rod has no abutting pressure on the inner wall of the chute, and the slider can slide relative to the chute again.

[0009] Preferably, the sliding groove is a dovetail groove, and the sliding block is a dovetail block, which can limit the sliding block in the sliding groove and prevent it from disengaging.

[0010] Preferably, the lower section of the locking rod is arranged in a tapered structure that is thicker at the bottom and thinner at the top corresponding to the side wall of the dovetail block, which can adapt to the internal structure of the dovetail groove, increase the contact area, and lock the sliding block more firmly in the sliding groove.

[0011] Preferably, an adjusting handle is arranged at the rear end of the fastening bolt, which is convenient for turning the fastening bolt.

[0012] Preferably, the meter rod locking assembly includes a locking sleeve and a screwing rod. The main meter frame is provided with a through hole, the locking sleeve is provided with an opening, the locking sleeve is arranged in the through hole, the meter rod passes through the locking sleeve, the side wall of the through hole is provided with a second screw hole that penetrates inside and outside, and the screwing rod is fitted in the second screw hole, and the front end of the screwing rod abuts against the locking sleeve. By turning the screwing rod, the outer wall of the locking sleeve can be pushed. After receiving an external pressure, the locking sleeve contracts inward, thereby clamping the meter rod to achieve the effect of fixing the meter rod on the main meter frame.

[0013] Preferably, the locking sleeve is locked with the through hole by screws, which can prevent the locking sleeve from moving relative to the through hole, so that the screwing rod can stably contact the same position of the locking sleeve to achieve locking.

[0014] Preferably, the locking sleeve includes an inner locking copper sleeve and an outer probe locking sleeve. The inner locking copper sleeve can make the meter rod be fixed more firmly without slipping.

[0015] Preferably, the main meter frame is provided with a counterbore for the screw to pass through, which is convenient for setting the screw.

[0016] Preferably, a handle sleeve is arranged at the rear end of the screwing rod, which is convenient for turning the screwing rod.

[0017] Advantages of the present utility model:

[0018] By setting the swinging locking rod and the meter rod locking assembly, this solution can well fix the main meter frame in the base sliding groove, fix the meter rod to the main meter frame, the fixing structure is firm and reliable, the disassembly is simple, and the use is convenient. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only two of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a perspective view of an embodiment of the present utility model;

[0021] Figure 2 is an axonometric sectional view of an embodiment of the present utility model;

[0022] Wherein, 1, main table frame; 2, slider; 3, inner cavity; 4, locking rod; 5, conical structure; 6, fastening bolt; 7, handle; 8, locking copper sleeve; 9, screw; 10, screwing rod; 11, handle sleeve; 12, probe locking sleeve. Specific embodiments

[0023] To deepen the understanding of the present utility model, the following will further describe the present utility model in detail with reference to the drawings and embodiments. The embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0024] Embodiment

[0025] As Figure 1 shown, a locking device for a verification instrument includes a main table frame 1; a table rod locking assembly is arranged on the upper part of the main table frame 1; a slider 2 adapted to a chute is arranged on the lower part of the main table frame 1. Combining Figure 2 shown, an inner cavity 3 is arranged inside the main table frame 1, the inner cavity 3 extends downward to the side wall of the slider 2, a locking rod 4 is arranged in the inner cavity 3, the middle part of the locking rod 4 is hinged to the inner cavity 3, the lower section of the locking rod 4 corresponds to the side wall of the slider 2, a first screw hole communicating inside and outside is arranged on the upper side wall of the inner cavity 3, a fastening bolt 6 extends from the outside of the main table frame 1 and is adapted to the first screw hole, the front end of the fastening bolt 6 abuts against the upper part of the locking rod 4, the fastening bolt 6 pushes the upper end of the locking rod 4, and the lower section of the locking rod 4 swings outward to the slider 2.

[0026] In this solution, the upper part of the main table frame 1 is used to fix the table rod, the lower part of the main table frame 1 is fixed to the base chute of the verification instrument. The locking rod 4 arranged in the inner cavity 3 can swing, the upper end is pushed by the fastening bolt 6, the lower end of the locking rod 4 swings outward to the slider 2, the lower end of the locking rod 4 will abut against the inner wall of the chute, and then the slider 2 is locked relative to the chute. When the position needs to be moved, the fastening bolt 6 is rotated reversely. Without the abutment of the fastening bolt 6, the locking rod 4 has no abutting pressure on the inner wall of the chute, and the slider 2 can slide relative to the chute again.

[0027] The chute is a dovetail groove, and the slider 2 is a dovetail block. The slider 2 can be limited in the chute to prevent it from detaching.

[0028] The lower section of the lock rod 4 is arranged as a tapered structure 5 that is thicker at the bottom and thinner at the top corresponding to the side wall of the dovetail block. It can adapt to the internal structure of the dovetail groove, increase the contact area, and lock the slider 2 more firmly in the chute.

[0029] The rear end of the fastening bolt 6 is provided with an adjusting handle 7. It is convenient to rotate the fastening bolt 6.

[0030] The meter rod locking assembly includes a locking sleeve and a screwing rod 10. The main meter frame 1 is provided with a through hole. The locking sleeve is provided with an opening. The locking sleeve is arranged in the through hole. The meter rod passes through the locking sleeve. The side wall of the through hole is provided with a second screw hole that penetrates inside and outside. The second screw hole is fitted with the screwing rod 10. The front end of the screwing rod 10 abuts against the locking sleeve. By rotating the screwing rod 10, the outer wall of the locking sleeve can be pushed. After receiving an external pressure, the locking sleeve contracts inward, and then clamps the meter rod to achieve the effect of fixing the meter rod on the main meter frame 1.

[0031] The locking sleeve is locked with the through hole by a screw 9. It can prevent the locking sleeve from moving relative to the through hole, so that the screwing rod 10 can stably contact the same position of the locking sleeve to achieve locking. The locking sleeve includes an inner locking copper sleeve 8 and an outer probe locking sleeve 12. The inner locking copper sleeve 8 can make the meter rod be fixed more firmly without slipping.

[0032] The main meter frame 1 is provided with a counterbore for the screw 9 to pass through. It is convenient to set the screw 9.

[0033] The rear end of the screwing rod 10 is provided with a handle sleeve 11. It is convenient to rotate the screwing rod 10.

[0034] The beneficial effects of the present utility model:

[0035] By setting the swing lock rod 4 and the meter rod locking assembly in this solution, the main meter frame 1 can be well fixed in the base chute, and the meter rod is fixed to the main meter frame 1. The fixing structure is firm and reliable, the disassembly is simple, and the use is convenient.

[0036] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered as the scope recorded in this specification.

[0037] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A locking device for a calibration instrument, characterized in that: It includes a main table frame (1); A meter rod locking assembly is arranged on the upper part of the main meter frame (1); The lower part of the main frame (1) is provided with a sliding block (2) adapted to the sliding groove. The main meter frame (1) is provided with an inner cavity (3) inside, and the inner cavity (3) extends downward to the side wall of the slider (2). The inner cavity (3) is provided with a locking rod (4). The middle part of the locking rod (4) is hinged to the inner cavity (3), and the lower section of the locking rod (4) is arranged corresponding to the side wall of the slider (2). The upper side wall of the inner cavity (3) is provided with a first screw hole connecting the inside and the outside, and a fastening bolt (6) extends from the outside of the main meter frame (1) and is adapted to the first screw hole. The front end of the fastening bolt (6) abuts against the upper part of the locking rod (4), and the fastening bolt (6) pushes the upper end of the locking rod (4), and the lower section of the locking rod (4) swings toward the outside of the slider (2).

2. The locking device of a calibration instrument according to claim 1, characterized in that: The slide groove is a dovetail groove, and the slider (2) is a dovetail block.

3. The locking device of a calibration instrument according to claim 2, characterized in that: The lower section of the locking rod (4) is configured as a tapered structure (5) that is thick at the bottom and thin at the top, corresponding to the side wall of the dovetail block.

4. The locking device of a calibration instrument according to claim 1, characterized in that: An adjusting handle (7) is provided at the rear end of the fastening bolt (6).

5. The locking device of a calibration instrument according to claim 1, characterized in that: The meter stem locking assembly comprises a locking sleeve and a screw (10); the main meter frame (1) is provided with a through hole; the locking sleeve is provided with an opening; the locking sleeve is arranged in the through hole; the meter stem is passed through the locking sleeve; a second screw hole penetrating the inside and outside is arranged on the side wall of the through hole; the screw (10) is adapted to be disposed in the second screw hole; and the front end of the screw (10) abuts against the locking sleeve.

6. The locking device of a calibration instrument according to claim 5, characterized in that: The locking sleeve is locked with the through hole via a screw (9).

7. The locking device of a calibration instrument according to claim 6, characterized in that: The locking sleeve comprises an inner locking copper sleeve (8) and an outer measuring head locking sleeve (12).

8. The locking device of a calibration instrument according to claim 7, characterized in that: The main frame (1) is provided with a countersunk hole for the screw (9) to pass through.

9. The locking device of a calibration instrument according to claim 8, characterized in that: A handle sleeve (11) is provided at the rear end of the screw rod (10).

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