Bore diameter measuring device for universal artillery bullet withdrawing and bore comprehensive detection device

Abstract

The utility model discloses a bore diameter measuring device for a universal artillery retreating and bore comprehensive detection device. The bore diameter measuring device comprises a body, a first positioning ring, a second positioning ring, an integrated circuit board, a caliper gauge and a connecting mechanism. The bore diameter measuring device can be installed at the front end of a general artillery retreating and bore comprehensive detection device, can crawl in a bore, measures the value of the bore diameter of the bore in the complete axial direction, and provides real and accurate data for bore detection, investigation and maintenance guarantee.

Description

Technical Field

[0001] The utility model relates to the technical field of artillery maintenance support equipment, in particular to a bore diameter measuring device for a general-purpose artillery cartridge extraction and bore comprehensive detection device. Background Technique

[0002] After the artillery bore has experienced long-term live ammunition shooting, due to comprehensive factors such as ablation, expansion under the action of high temperature and high pressure generated by gunpowder combustion, erosion by the driving band of the projectile, wear, fracture of the rifling crest, and rust, the bore diameter of the artillery bore will become larger as it is used and consumed. The increase in the bore diameter will, to a certain extent, reduce the muzzle velocity of the projectile, affect the shooting accuracy, and cause the dispersion of projectiles to expand. When the reduction in muzzle velocity reaches a certain value, the artillery barrel needs to be replaced. Currently, the reduction in muzzle velocity is measured and calculated by a speed measurement radar. Content of the Utility Model

[0003] The purpose of the utility model is to provide a bore diameter measuring device for a general-purpose artillery cartridge extraction and bore comprehensive detection device to solve the problems in the above background technique.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A bore diameter measuring device for a general-purpose artillery cartridge extraction and bore comprehensive detection device includes a body, a first positioning ring, a second positioning ring, an integrated circuit board, a caliper, and a connecting mechanism.

[0006] The body includes a main body housing and a bore diameter measuring module. A convex ring is provided inside the port at one end of the main body housing. The integrated circuit board is installed on the convex ring. A fixed end cover is provided above the integrated circuit board. The first positioning ring is installed on the outer side wall of the port of the main body housing provided with the convex ring. Threaded holes for screwing are symmetrically provided on the outer side wall near the other port of the main body housing. The bore diameter measuring module is installed in the threaded holes for screwing. A radially telescopic touch rod is provided at the outer end of the bore diameter measuring module. A first spring capable of pushing out the touch rod is provided inside the touch rod. A signal line connecting pin is provided at the inner end of the bore diameter measuring module. The signal line connecting pin is connected to the integrated circuit board through a signal line. The signal generated by the telescopic movement of the touch rod can be transmitted to the integrated circuit board. The second positioning ring is sleeved at the position of the main body housing provided with the threaded holes for screwing.

[0007] Detection heads are symmetrically provided on the second positioning ring. Contact heads are provided on the detection heads. The contact heads act on the rifling crest inside the bore. Guide pins are symmetrically provided on the second positioning ring. A guide band is provided at the outer end of the guide pin. The guide band can be embedded in the rifling groove. A second spring capable of pushing the guide pin outwards is provided at the inner end of the guide pin. The detection heads are adapted to the touch rods. When the caliper is set to zero, it fits with the contact heads respectively.

[0008] The connecting mechanism includes a connecting ring, a connecting sleeve, a screw ring and a connecting key. An ear is provided on one end face of the connecting ring. An annular wall extending away from the ear is provided on the inner ring of the connecting ring. One end of the connecting ring with the ear is connected to one end of the main body housing away from the convex ring. The other end of the connecting ring is connected to the connecting sleeve through the annular wall. The connecting sleeve can rotate freely relative to the connecting ring. The screw ring is arranged inside the connecting sleeve and connected to the annular wall. A retaining plate mounting groove is provided at the port on the screw ring for mounting and accommodating the retaining plate. The inner side of the accommodating retaining plate is clamped in the groove. A connecting key and a fastening screw hole are provided on the outer side wall of the end of the connecting sleeve away from the connecting ring. The connecting key is adapted to the key groove of the general-purpose gun ammunition extraction and gun chamber comprehensive detection device. The general-purpose gun ammunition extraction and gun chamber comprehensive detection device is fixed in the fastening screw hole of the connecting sleeve through a fastening bolt.

[0009] Furthermore, the main body is in a circular tube shape. Four screw holes are equidistantly arranged on the convex ring. The screw holes are used to install and fix the end cover through screw rods. First limiting holes are symmetrically arranged on the outer side wall of the main body housing close to the convex ring. The first positioning ring is connected to the first limiting holes through screws. Second limiting holes are symmetrically arranged on the outer side wall below the middle of the main body housing. The second positioning ring is connected to the second limiting holes through screws.

[0010] Furthermore, the guide pin is restricted in the guide pin mounting hole through a screw, and an annular groove is provided in the middle of the guide pin, and the annular groove can move axially.

[0011] Furthermore, the caliper is provided with a measuring surface.

[0012] Furthermore, a switching element, a display element and a potentiometer element are provided on the integrated circuit board. A battery is provided inside the main body. The battery is connected to the integrated circuit board through a connecting buckle and a cable.

[0013] Furthermore, mounting holes, display element holes, switching element holes and zero-adjusting element holes are provided on the fixed end cover. The fixed end cover is connected to the integrated circuit board through a screw rod.

[0014] Furthermore, four ears are provided on the connecting ring. Screw holes are provided on the ears. The connecting ring is connected to the connecting holes on the main body through the screw holes.

[0015] Furthermore, an external thread is provided on the outside of the annular wall, and an internal thread adapted to the external thread is provided inside the screw ring.

[0016] Beneficial effects:

[0017] The bore diameter measuring device in the present utility model can be installed at the front end of a general-purpose gun cartridge extraction and bore comprehensive detection device, can move within the gun bore, and measure the values of the bore diameter of the complete axial gun bore, providing true and accurate data for gun bore detection, inspection, and maintenance support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the main body in the present utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the integrated circuit board in the present utility model.

[0021] Figure 4 It is a schematic diagram of the structure of the first positioning ring in the present utility model.

[0022] Figure 5 It is a schematic diagram of the structure of the second positioning ring in the present utility model.

[0023] Figure 6 It is a schematic diagram of the structure of the caliper in the present utility model.

[0024] Figure 7 It is a schematic diagram of the structure of the connecting mechanism in the present utility model.

[0025] Wherein: 1. Main body housing; 2. Convex ring; 3. Screw hole; 4. First limiting hole; 5. Rotary connection screw hole; 6. Bore diameter measuring module; 6.1. Contact rod; 7. Second limiting hole; 8. Connection hole; 9. Screw; 10. Fixed end cover; 11. Mounting hole; 12. Screw rod; 13. Integrated circuit board; 14. Nut; 15. Display element; 16. Switch element; 17. Potentiometer element; 18. First positioning ring; 19. Second positioning ring; 20. Detection head mounting hole; 21. Detection head; 22. Contact head; 23. Guide pin mounting hole; 24. Guide pin; 24.1. Second spring; 25. Guide belt; 26. First groove; 27. Caliper; 28. Measuring surface; 29. Connection ring; 30. Support ear; 31. Ring wall; 32. Second groove; 33. Connection sleeve; 34. Screw ring; 35. Internal thread; 36. Stay plate mounting groove; 37. Stay plate; 38. Connection key; 39. Tightening screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "middle", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, unless otherwise clearly specified and defined, terms such as "installation", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be realized by conventional technical means, which will not be elaborated one by one in this application.

[0028] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0029] Embodiment

[0030] A bore diameter measuring device for a general-purpose artillery cartridge extraction and comprehensive bore detection device, as Figures 1 to 7 shown, includes a main body, a first positioning ring 18, a second positioning ring 19, an integrated circuit board 13, a caliper 27, and a connection mechanism.

[0031] The main body includes a main machine housing 1 and a bore diameter measuring module 6. Inside the port at one end of the main machine housing 1, a convex ring 2 is provided. The integrated circuit board 13 is installed on the convex ring 2. Above the integrated circuit board 13, a fixed end cover 10 is provided. The first positioning ring 18 is installed on the outer side wall of the port of the main machine housing 1 where the convex ring 2 is provided. On the outer side wall near the other port of the main machine housing 1, screw holes 5 for screwing are symmetrically provided. The bore diameter measuring module 6 is installed in the screw holes 5 for screwing. The outer end of the bore diameter measuring module 6 is provided with a radially telescopic contact rod 6.1. Inside the contact rod 6.1, a first spring capable of ejecting the contact rod 6.1 is provided. The inner end of the bore diameter measuring module 6 is provided with signal line connection pins, and the signal line connection pins are connected to the integrated circuit board 13 through signal lines. The signal generated by the telescopic movement of the contact rod 6.1 can be transmitted to the integrated circuit board 13. The second positioning ring 19 is sleeved at the position of the main machine housing 1 where the screw holes 5 for screwing are provided.

[0032] The second positioning ring 19 is symmetrically provided with detection heads 21. The detection heads 21 are provided with contact heads 22. The contact heads act on the male wires in the gun barrel. The second positioning ring 19 is symmetrically provided with guide pins 24. The outer ends of the guide pins 24 are provided with guide bands 25. The guide bands 25 can be embedded into the female grooves. The inner ends of the guide pins 24 are provided with second springs 24.1 capable of pushing the guide pins 24 outwards. The detection heads 21 are adapted to the contact rods 6.1. When the caliper 27 is set to zero, it is respectively in contact with the contact heads 22;

[0033] The connecting mechanism includes a connecting ring 29, a connecting sleeve 33, a threaded ring 34 and a connecting key 38. An ear 30 is provided on one end face of the connecting ring 29. An annular wall 31 extending away from the ear 30 is provided on the inner circle of the connecting ring 29. One end of the connecting ring 29 provided with the ear 30 is connected to one end of the main body housing 1 away from the convex ring 2. The other end of the connecting ring 29 is connected to the connecting sleeve 33 through the annular wall 31. The connecting sleeve 33 can rotate freely relative to the connecting ring 29. The threaded ring 34 is arranged inside the connecting sleeve 33 and connected to the annular wall 31. A retaining plate mounting groove 36 is provided at the port of the threaded ring 34 for mounting and accommodating the retaining plate 37. The inner side of the accommodating retaining plate 37 is clamped in the second groove 32. A connecting key 38 and a fastening screw hole 39 are provided on the outer side wall of one end of the connecting sleeve 33 away from the connecting ring 29. The connecting key 38 is adapted to the key groove of the general-purpose gun ammunition extraction and gun barrel comprehensive detection device. The general-purpose gun ammunition extraction and gun barrel comprehensive detection device is fixed in the fastening screw hole 39 of the connecting sleeve 33 through a fastening bolt.

[0034] Specifically, the gun bore diameter measuring device in this embodiment detects the inner diameter of a general-purpose gun's cartridge extraction and gun bore by setting a main body, a first positioning ring 18, a second positioning ring 19, an integrated circuit board 13, a caliper 27, and a connecting mechanism. The top of the main body housing 1 is provided with an integrated circuit board 13 through a convex ring 2, and the integrated circuit board 13 is enclosed and shielded by a fixed end cover 10. A first positioning ring 18 is fixedly connected to the outer end of the top of the main body housing 1. The diameter measuring device can be concentrically positioned in the gun bore through the first positioning ring 18. A second positioning ring 19 is fixedly connected below the first positioning ring 18. A detection head 21 and a guide pin 24 are installed on the second positioning ring 19. The two detection heads 21 and the two guide pins 24 are symmetrically arranged. The contact 22 on the outer end face of the detection head 21 contacts the land in the gun bore. Thus, the two contacts 22 slide in the axial direction of the gun bore to measure the distance between the two lands. The inner end face is adapted to the contact rod 6.1 of the diameter measuring module 6. Also, because the diameter measuring module 6 is connected to the integrated circuit board 13, the measurement result can be transmitted to the integrated circuit board 13. The guide band 25 of the guide pin 24 is embedded in the groove, enabling the diameter measuring device to slide according to the groove pitch when moving radially in the gun bore. And the second spring 24.1 in the guide pin 24 can push the guide pin 24 outwards, so that the guide band 25 at the outer end of the guide pin 24 fits tightly in the groove.

[0035] Preferably, the main body is in a circular tubular shape. Four screw holes 3 are equidistantly arranged on the convex ring 2. The fixed end cover 10 is installed through the screw holes 3 by screws 12. First limiting holes 4 are symmetrically arranged on the outer side wall of the main body housing 1 near the convex ring 2. The first positioning ring 18 is connected to the first limiting holes 4 by screws 9. Second limiting holes 7 are symmetrically arranged on the outer side wall below the middle of the main body housing 1. The second positioning ring 19 is connected to the second limiting holes 7 by screws 9.

[0036] Specifically, a convex ring 2 is provided inside the top of the main body to place the integrated circuit board 13. The fixed end cover 10 is installed above the integrated circuit board 13 and is connected to the convex ring 2 by screws 12 to protect and fix the integrated circuit board 13. Limiting holes are arranged on the outer side wall of the main body from top to bottom to fixedly connect the first positioning ring 18 and the second positioning ring 19.

[0037] Preferably, the guide pin 24 is restricted in the guide pin mounting hole 23 by a screw 9, and an annular groove is provided in the middle of the guide pin 24. The annular groove can move axially while being restricted by the screw 9.

[0038] Preferably, the caliper 27 is provided with a measuring surface 28. By fitting the measuring surface 28 with the contact 22 respectively, the radial position of the detection head 21 can be set to zero.

[0039] Preferably, the integrated circuit board 13 is provided with a switch element 16, a display element 15, and a potentiometer element 17, and a 9V battery is provided in the body, and the battery is connected to the integrated circuit board 13 through a connecting buckle and a cable. The fixed end cover 10 is provided with a mounting hole, a display element hole, a switch element hole, and a zero adjustment element hole, and the fixed end cover 10 is connected to the integrated circuit board 13 through a screw 12.

[0040] Specifically, the integrated circuit board 13 is used to calculate, process and display data. The power supply and disconnection of the device can be controlled through the switch element 16. The data value after measurement and calculation can be displayed through the display element 15. The display data can be set to zero when the contact 22 of the detection head 21 is at zero position through the potentiometer element 17. The fixed end cover 10 is provided with a mounting hole, and the corresponding position on the integrated circuit board 13 is also provided with a mounting hole. The screw 12 fixes the fixed end cover 10 and the integrated circuit board 13 to the convex ring 2 through the mounting hole, and the display element hole, the switch element hole, and the zeroing element hole are also provided on the fixed end cover 10 to facilitate the staff to directly operate the corresponding elements through the holes.

[0041] Preferably, the connecting ring 29 is provided with four lugs 30, the lugs 30 are provided with screw holes 3, and the connecting ring 29 is connected to the connecting hole 8 on the body through the screw holes 3. The outer side of the ring wall 31 is provided with an external thread, and the inner side of the screw ring 34 is provided with an internal thread matching the external thread.

[0042] Specifically, the connecting ring 29 is connected to the connecting hole 8 on the main body through the screw hole on the support ear 30 by means of screws 9, and the lower part of the connecting ring 29 is directly connected to the screw ring 34 inside the connecting sleeve 33 by means of threads, so that the connecting sleeve 33 is stuck between the connecting ring 29 and the screw ring 34, and the connecting sleeve 33 can rotate freely around the annular wall 31.

[0043] Working principle:

[0044] The gun bore diameter measuring device is installed and connected to the universal gun ejection and gun bore comprehensive detection device through the connecting key 38 and the fastening bolt. Then the circuit board switch element 16 is turned on, and the battery supplies power to the integrated circuit board 13 and the diameter measuring module 6.

[0045] Put the universal artillery shell ejection and comprehensive bore detection device connected with the bore diameter measuring device into the bore, so that the guide belt 25 on the second positioning ring 19 is stuck in the negative line, and the contact 22 on the detection head 21 is close to the positive line. The crawling mechanism of the universal artillery shell ejection and comprehensive bore detection device makes a linear motion in the bore, and the connecting device makes a linear motion with the crawling mechanism. Because the rifling in the bore has a certain twist, the main body rotates along the rifling twist under the action of the guide belt 25, and the connecting sleeve 33 can rotate freely relative to the connecting ring 29.

[0046] The crawling device for controlling the general-purpose gun ammunition extraction and comprehensive gun chamber detection device axially moves in the gun chamber. Observe and record the value on the display element 15 of the gun chamber diameter measuring device from the muzzle. The sum of this value and the value on the snap gauge 27 is the caliber value at different axial positions of the gun chamber.

[0047] When the gun chamber caliber changes, the feeler rod 6.1 on the diameter measuring module 6 will extend or retract. The diameter measuring module 6 converts the mechanical position change of the feeler rod 6.1 into a digital signal and sends it to the integrated circuit board 13. The integrated circuit board 13 processes the digital signal and displays it on the display element 15 to complete the detection.

[0048] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. All omissions, substitutions, and changes made within the scope of the gist of the present invention should be included in the protection scope of the present invention.

Claims

1. A barrel diameter measuring device for a general-purpose gun ejection and barrel comprehensive detection device, characterized in that: It includes a body, a first positioning ring, a second positioning ring, an integrated circuit board, a caliper and a connecting mechanism. The main body comprises a host shell and a diameter measuring module, a convex ring is provided inside a port at one end of the host shell, the integrated circuit board is mounted on the convex ring, a fixed end cover is provided above the integrated circuit board, the first positioning ring is installed on the outer side wall of the port of the host shell provided with the convex ring, a screw hole is symmetrically provided on the outer side wall of the other port close to the host shell, the diameter measuring module is installed in the screw hole, a radially retractable touch rod is provided at the outer end of the diameter measuring module, a first spring capable of pushing the touch rod out is provided in the touch rod, a signal line connecting pin is provided at the inner end of the diameter measuring module, the signal line connecting pin is connected to the integrated circuit board through a signal line, and the signal generated by the extension and retraction of the touch rod can be transmitted to the integrated circuit board, and the second positioning ring is sleeved at the position where the screw hole is provided in the host shell; The second positioning ring is symmetrically provided with a detection head, and the detection head is provided with a contact, and the contact acts on the positive line in the gun barrel. The second positioning ring is symmetrically provided with a guide pin, and the outer end of the guide pin is provided with a guide belt, and the guide belt can be embedded in the negative line. The inner end of the guide pin is provided with a second spring that can push the guide pin outward. The detection head is adapted to the feeler rod, and the caliper is respectively fitted with the contact when the caliper is set to zero; The connecting mechanism comprises a connecting ring, a connecting sleeve, a screw ring and a connecting key, wherein a supporting ear is arranged on one end surface of the connecting ring, and an inner ring of the connecting ring is provided with an annular wall extending in a direction away from the supporting ear, one end of the connecting ring provided with the supporting ear is connected to an end of the main engine housing away from the convex ring, and the other end of the connecting ring is connected to the connecting sleeve through the annular wall, and the connecting sleeve can rotate freely relative to the connecting ring, the screw ring is arranged inside the connecting sleeve and connected to the annular wall, and a port on the screw ring is provided with a stationary plate mounting groove, the stationary plate mounting groove is used to install and accommodate the stationary plate, the inner side of the accommodating stationary plate is clamped in the groove, and a connecting key and a fastening screw hole are provided on the outer side wall of the end of the connecting sleeve away from the connecting ring, the connecting key is adapted to the keyway of the universal artillery shell extraction and gun bore integrated detection device, and the universal artillery shell extraction and gun bore integrated detection device is fixed in the fastening screw hole of the connecting sleeve by a fastening bolt.

2. The bore diameter measuring device for a universal artillery shell extraction and bore comprehensive detection device according to claim 1, characterized in that: The main body is in the shape of a circular tube, and four screw holes are equidistantly arranged on the convex ring. The screw holes are used to fix the end cover by screws. The first limiting holes are symmetrically arranged on the outer wall of the main housing near the convex ring, and the first positioning ring is connected to the first limiting hole by screws. The second limiting holes are symmetrically arranged on the outer wall below the middle part of the main housing, and the second positioning ring is connected to the second limiting hole by screws.

3. The bore diameter measuring device for the universal artillery shell extraction and bore comprehensive detection device according to claim 1 is characterized in that: The guide pin is restricted in the guide pin mounting hole by means of a screw, and an annular groove is provided in the middle of the guide pin, and the annular groove can move axially.

4. The bore diameter measuring device for a universal artillery shell ejection and bore comprehensive detection device according to claim 1, characterized in that: The caliper is provided with a measuring surface.

5. The bore diameter measuring device for the universal artillery shell extraction and bore comprehensive detection device according to claim 1, characterized in that: The integrated circuit board is provided with a switch element, a display element, and a potentiometer element. The body is provided with a battery, and the battery is connected to the integrated circuit board through a connecting buckle and a cable.

6. The bore diameter measuring device for the universal artillery shell ejection and bore comprehensive detection device according to claim 5, characterized in that: The fixed end cover is provided with a mounting hole, a display element hole, a switch element hole, and a zero adjustment element hole, and the fixed end cover is connected to the integrated circuit board through a screw.

7. The bore diameter measuring device for the universal artillery shell extraction and bore comprehensive detection device according to claim 1 is characterized in that: The connecting ring is provided with four supporting ears, the supporting ears are provided with screw holes, and the connecting ring is connected to the connecting holes on the body through the screw holes.

8. The bore diameter measuring device for the universal artillery shell extraction and bore comprehensive detection device according to claim 1 is characterized in that: The outside of the ring wall is provided with an external thread, and the inside of the spiral ring is provided with an internal thread matched with the external thread.

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