Bending resistance testing device for electronic detonator
By designing an electronic detonator bending test device using a non-contact magnetic pressure mechanism and a radial linkage positioning mechanism, the problem of inability to provide comprehensive multi-directional detection and poor pressure control in the prior art is solved, and efficient, accurate and safe electronic detonator bending detection is achieved.
Patent Information
- Application Number
- CN202520210926.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2035-02-11
AI Technical Summary
The existing electronic detonator bending detection technology cannot provide comprehensive multi-directional detection results, and the contact loading method of the pressure device has problems such as discontinuous boosting and difficulty in controlling bending torque, which affects the accuracy and safety of the detection results.
An electronic detonator bending test device is designed, using a non-contact magnetic pressure mechanism and a radial linkage positioning mechanism to realize multi-direction bending detection of the electronic detonator, ensuring continuous and controllable pressure, and avoiding irreversible damage to the detonator.
This device can realize multi-directional bending detection of electronic detonators, improve detection efficiency and accuracy, simplify operation procedures, and ensure consistency and safety of detection results.
Smart Images
Figure CN222635982U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electronic detonator performance testing, in particular to an electronic detonator bending resistance testing device. Background Art
[0002] Electronic detonators are precision devices widely used in the field of industrial blasting. Their main uses include mining, building demolition, tunneling, and seismic exploration. Compared with traditional detonators, electronic detonators have higher reliability and safety, and can achieve more complex blasting tasks through precise electronic control. Therefore, it is particularly important to ensure the mechanical properties of electronic detonators in various environments. Bending resistance is an important indicator of electronic detonators. Electronic detonators are usually columnar structures, which encapsulate precision electronic components and sensitive detonating agents. When detonators are subjected to bending stress, they may cause damage to internal components, circuit breakage, and agent leakage, which seriously affect the normal function of the detonator and even cause safety accidents.
[0003] At present, the following methods are mainly used to test the bending resistance of electronic detonators: fix one end of the detonator on the test platform, apply a unidirectional bending torque to the detonator through an applying device, and record the deformation, bending angle and other parameters of the detonator to evaluate its bending resistance; or place the detonator on two supporting points, apply concentrated force in the middle of the detonator, and evaluate its bending resistance by measuring the deflection, strain and other parameters of the detonator.
[0004] However, the existing electronic detonator bending resistance detection technology has the following defects: electronic detonators usually have a columnar structure, which means that unidirectional pressure detection can only measure the bending resistance of one side of the detonator. However, in actual applications, electronic detonators may be subjected to bending stresses from different directions, so unidirectional detection cannot provide comprehensive test results. If it is necessary to perform bending moment detection on other angles on the same circumference, the detonator must be removed, rotated and repositioned for multi-angle detection. This process is not only cumbersome, but also because each repositioning requires the force to be adjusted again, it is difficult to ensure that the applied force is completely consistent, resulting in a lack of comparison and consistency in the test results; the existing pressure-applying devices mostly use mechanical transmission contact boosting, such as cylinders, hydraulic cylinders, screw nut transmission mechanisms, etc. This contact loading method has discontinuous boosting, and it is difficult to master the incremental control of the bending moment. A slight displacement will directly cause the detonator to bend, which is easy to cause irreversible damage to the detonator and affect the accuracy of the test results. Utility Model Content
[0005] In view of the above situation, the utility model provides an electronic detonator bending resistance testing device, which can meet the needs of multi-directional detection, improve detection efficiency, simplify the operation process, and the pressure-applying mechanism adopts non-contact pressure application, and the pressure application is continuously controllable to improve accuracy.
[0006] The technical solution adopted by the utility model is as follows: the utility model proposes an electronic detonator bending resistance test device, including a table top, a side plate is vertically fixed on the upper side of the table top, a first motor is fixed on one side of the side plate, the output end of the first motor passes through the side plate and is coaxially fixed with a gear, the gear is close to the other side of the side plate, a swivel is rotatably provided on the side plate above the first motor, an outer gear ring is coaxially fixed on one side of the side plate, the outer gear ring is meshingly connected with the gear, a retaining ring is coaxially fixed on the other side of the swivel, close to the side plate, to fix the axial position of the swivel, a radial linkage positioning mechanism is coaxially provided on the outer gear ring, a slide rail is fixed on the upper edge of the table top perpendicular to the direction of the side plate, a slide plate is slidably engaged in the slide rail, so as to adjust the position of the slide plate, and a non-contact magnetic pressure mechanism is provided on the upper part of the slide plate.
[0007] Furthermore, the radial linkage positioning mechanism includes an outer cover, which is coaxially fixed on one side of the outer gear ring, and the outer cover is a hollow cylindrical structure with an open lower end. A sliding groove is provided in a circumferential array on the surface of the closed end of the outer cover, and the sliding groove points to the axis of the outer cover. A sliding bar is slidably engaged with the inner circumferential array of the sliding groove, and an arc-shaped clamping plate is fixed on one end of the sliding bar facing the axis of the outer cover for clamping the detonator. An inner ring is coaxially fixed inside the outer cover, and a turntable is coaxially rotated between the outer cover and the inner ring. The axis of the turntable is open, and a base is coaxially fixed at the open end of the outer cover, which has a shielding and protection function. The base is a hollow cylindrical structure with an opening at the upper end, and the axis of the lower wall of the base is open to achieve the penetration of the detonator. A through groove is provided in a circumferential array on the side wall of the base, and a first bevel tooth is provided in the through groove. The two ends of the first bevel tooth are rotatably connected to the outer cover and the inner ring respectively. A spiral track is coaxially fixed on the upper side of the turntable, and sliding ridges are irregularly fixed on the lower side of each slide bar. The sliding ridges are tightly slid between adjacent tracks of the spiral track. A second bevel tooth is coaxially fixed on the lower side of the turntable, and the second bevel tooth is vertically meshed with the first bevel tooth. The length of the middle part of each arc-shaped clamping plate from the axis of the outer cover is equal.
[0008] Furthermore, the non-contact magnetic pressure mechanism includes a sliding column, which is horizontally symmetrical and vertically slides through a slide plate, and a pressure plate is vertically fixed to the sliding column at one end close to the radial linkage positioning mechanism, a pressure sensor is fixed between the sliding columns on one side of the pressure plate, and a first magnetic column is coaxially fixed on one side of the pressure sensor, and a screw is vertically passed through the slide plate between the sliding columns, and the screw is threadedly connected to the slide plate, and a second magnetic column is coaxially fixed to one end of the screw facing the first magnetic column, and the second magnetic column is coaxially arranged with the first magnetic column, and a second motor is provided at the other end of the screw, and the output end of the second motor is coaxially fixedly connected to the screw, and limiting columns are fixed on the upper and lower sides of the screw on the side of the slide plate away from the pressure plate, and the limiting columns slide through the upper and lower extension parts of the second motor, so that the second motor itself cannot rotate.
[0009] Furthermore, a rotating rod is coaxially fixed to one of the first bevel gears to facilitate the operation of rotating the first bevel gear, and the rotating rod is located outside the outer cover.
[0010] Furthermore, adjacent surfaces of the first magnetic column and the second magnetic column are arranged to repel each other.
[0011] Furthermore, a rolling ball array is rolled and engaged on the surface of the pressure plate on the side facing away from the pressure sensor to reduce friction when in contact with the detonator, and the upper and lower end surfaces of the pressure plate are at the same length from the extension line of the axis of the outer cover.
[0012] The beneficial effects achieved by the utility model using the above structure are as follows:
[0013] (1) The second motor is remotely controlled to start and drive the screw to rotate. When the second motor itself is limited by the limit column, it does not rotate, so that the screw spirals forward on the slide, driving the second motor to slide forward on the limit column. The repulsive force generated when the second magnetic column approaches the first magnetic column makes the pressure plate approach the electronic detonator through the sliding of the slide column and the slide, and finally makes the rolling ball contact the electronic detonator. The second motor continues to rotate to control the distance between the second magnetic column and the first magnetic column and then adjust the size of the repulsive force to achieve the bending resistance test of the electronic detonator. Since the second magnetic column applies non-contact pressure to the first magnetic column, it will not directly drive the displacement of the first magnetic column and the pressure plate, thus avoiding the non-continuous advancement of the screw during the threaded movement with the slide to cause overpressure damage to the electronic detonator. The pressure is continuously controllable and the test result is more accurate.
[0014] (2) The first motor is remotely turned on to drive the gear and then the outer gear ring and the outer cover to rotate, thereby realizing stable rotation of the electronic detonator. Since the electronic detonator is always at the axial center position of the outer cover, the pressure of the pressure plate on the electronic detonator remains unchanged when the position of the second magnetic column remains unchanged, thereby realizing anti-bending detection of the electronic detonator at any angle in the circumferential direction, avoiding repeated loading and unloading of the electronic detonator, and ensuring consistent pressure, so that the detection results are consistent. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a first three-dimensional structural schematic diagram of an electronic detonator bending resistance testing device proposed by the utility model.
[0016] Figure 2 This is a second three-dimensional structural schematic diagram of an electronic detonator bending resistance testing device proposed by the utility model.
[0017] Figure 3 The utility model discloses a schematic diagram of a first explosion structure of a radial linkage positioning mechanism of an electronic detonator bending resistance testing device.
[0018] Figure 4 The utility model discloses a schematic diagram of a second explosion structure of a radial linkage positioning mechanism of an electronic detonator bending resistance testing device.
[0019] Figure 5 for Figure 2 Enlarged view of part A.
[0020] Among them, 1. table, 2. side plate, 3. first motor, 4. gear, 5. swivel, 51. snap ring, 52. outer gear ring, 6. radial linkage positioning mechanism, 61. outer cover, 611. slide groove, 62. inner ring, 63. slide bar, 631. arc splint, 632. slide ridge, 64. base, 641. through groove, 65. first bevel gear, 651. rotating rod, 66. turntable, 661. vortex track, 662. second bevel gear, 7. slide rail, 8. slide plate, 9. non-contact magnetic pressure mechanism, 91. slide column, 92. pressure plate, 93. pressure sensor, 94. first magnetic column, 95. screw, 951. second magnetic column, 96. second motor, 97. limit column, 98. ball.
[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the utility model proposes an electronic detonator bending resistance test device, including a table top 1, a side plate 2 is vertically fixed on the upper side of the table top 1, a first motor 3 is fixed on one side of the side plate 2, an output end of the first motor 3 passes through the side plate 2 and is coaxially fixed with a gear 4, the gear 4 is close to the other side of the side plate 2, a swivel 5 is rotatably provided on the side plate 2 above the first motor 3, an outer gear ring 52 is coaxially fixed on one side of the side plate 2, the outer gear ring 52 is meshed with the gear 4, a retaining ring 51 is coaxially fixed on the other side of the swivel 5 and is close to the side plate 2, a radial linkage positioning mechanism 6 is coaxially provided on the outer gear ring 52, a slide rail 7 is fixed on the upper edge of the table top 1 perpendicular to the direction of the side plate 2, a slide plate 8 is slidably engaged in the slide rail 7, and a non-contact magnetic pressure mechanism 9 is provided on the upper part of the slide plate 8.
[0025] The radial linkage positioning mechanism 6 includes an outer cover 61, which is coaxially fixed on one side of the outer gear ring 52. The outer cover 61 is a hollow cylindrical structure with an open lower end. A sliding groove 611 is provided on the closed end surface of the outer cover 61 in a circumferential array. The sliding groove 611 points to the axis of the outer cover 61. A sliding bar 63 is slidably engaged in the inner circumferential array of the sliding groove 611. An arc-shaped clamping plate 631 is fixed at one end of the sliding bar 63 facing the axis of the outer cover 61. An inner ring 62 is coaxially fixed in the outer cover 61. A turntable 66 is coaxially rotated between the outer cover 61 and the inner ring 62. The axis of the turntable 66 is open. A base 64 is coaxially fixed at the open end of the outer cover 61. The base 64 is open at the upper end. The hollow cylindrical structure of the mouth, the lower wall axis of the base 64 is open, the side wall of the base 64 is provided with a through groove 641 in a circumferential array, and a first bevel tooth 65 is provided in the through groove 641. The two ends of the first bevel tooth 65 are rotatably connected with the outer cover 61 and the inner ring 62 respectively. A spiral track 661 is coaxially fixed on the upper side of the turntable 66, and a sliding rib 632 is irregularly fixed on the lower side of each slide bar 63. The sliding rib 632 is tightly slidably arranged between adjacent tracks of the spiral track 661. A second bevel tooth 662 is coaxially fixed on the lower side of the turntable 66. The second bevel tooth 662 is vertically meshed with the first bevel tooth 65, and the length of the middle part of each arc-shaped clamping plate 631 from the axis of the outer cover 61 is equal.
[0026] Among them, the non-contact magnetic pressure mechanism 9 includes a slide post 91, which slides horizontally and symmetrically and vertically through the slide plate 8. The slide post 91 is vertically fixed with a pressure plate 92 at one end close to the radial linkage positioning mechanism 6. A pressure sensor 93 is fixed between the slide posts 91 on one side of the pressure plate 92, and a first magnetic column 94 is coaxially fixed on one side of the pressure sensor 93. A screw rod 95 is vertically passed through the slide post 91 on the slide post 8. The screw 95 is threadedly connected to the slide plate 8. A second magnetic column 951 is coaxially fixed at one end of the screw 95 facing the first magnetic column 94. The second magnetic column 951 is coaxially arranged with the first magnetic column 94. A second motor 96 is provided at the other end of the screw rod 95. The output end of the second motor 96 is coaxially fixedly connected to the screw 95. A limit column 97 is fixed on the upper and lower sides of the screw 95 on the side of the slide plate 8 facing away from the pressure plate 92, and the limit column 97 slides through the upper and lower extension parts of the second motor 96.
[0027] Among them, one of the first bevel teeth 65 is coaxially fixed with a rotating rod 651, and the rotating rod 651 is located outside the outer cover 61. The adjacent surfaces of the first magnetic column 94 and the second magnetic column 951 are arranged to repel each other. The surface array of the pressure plate 92 facing away from the pressure sensor 93 is rollingly engaged with a ball 98, and the upper and lower end surfaces of the pressure plate 92 are the same length from the extension line of the axis of the outer cover 61.
[0028] When in use, one end of the electronic detonator is placed in the arc clamping plate 631, and the rotating rod 651 drives the adjacent first bevel gear 65 to rotate. The second bevel gear 662 is meshed with each first bevel gear 65 to achieve stable rotation around the axis of the outer cover 61. Based on the structural characteristics of the spiral track 661, the rotation of the spiral track 661 drives the sliding rib 632 to move radially in the spiral track 661, and then drives the sliding bar 63 and the arc clamping plate 631 to move radially, so as to fix the electronic detonator. Then the operator leaves the explosion-proof room and remotely controls the second motor 96 to start and drive the screw 95 to rotate. Under the limit of the limit column 97, the second motor 96 itself does not rotate, so that the screw 95 spirals forward on the slide plate 8, driving the second motor 96 to slide forward on the limit column 97. The repulsive force generated when the second magnetic column 951 approaches the first magnetic column 94 makes the pressure plate 92 approach the electronic detonator through the sliding of the slide column 91 and the slide plate 8, and finally makes the ball 98 contact with the electronic detonator. The second motor 96 Continue to rotate to control the distance between the second magnetic column 951 and the first magnetic column 94 and thus adjust the size of the repulsive force. The pressure generated by the pressure plate 92 on the electronic detonator is monitored by the pressure sensor 93. The pressure sensor 93 converts the pressure into an electrical signal. The principle is that when subjected to pressure, the sensitive element inside the pressure sensor 93 will deform, resulting in a change in resistance and converted into a change in the electrical signal, and the converted data will be sent to the remote receiving device in real time to realize the anti-bending detection of the electronic detonator. The first motor 3 is remotely turned on to drive the gear 4 and then drive the outer gear ring 52 and the outer cover 61 to rotate, so as to realize the stable rotation of the electronic detonator. Since the electronic detonator is always at the axial position of the outer cover 61, the pressure of the pressure plate 92 on the electronic detonator remains unchanged when the position of the second magnetic column 951 remains unchanged, so as to realize the anti-bending detection of the electronic detonator at any angle in the circumferential direction. The function of the rolling ball 98 greatly reduces the friction when the electronic detonator rotates relative to the pressure plate 92, thereby avoiding torque damage to the electronic detonator.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.
[0031] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. An electronic detonator bending resistance testing device, comprising a table (1), characterized in that: A side plate (2) is vertically fixed on the upper side of the table top (1), a first motor (3) is fixed on one side of the side plate (2), an output end of the first motor (3) passes through the side plate (2) and is coaxially fixed with a gear (4), the gear (4) is in close contact with the other side of the side plate (2), a rotating ring (5) is rotatably passed through the side plate (2) above the first motor (3), an outer gear ring (52) is coaxially fixed on one side of the side plate (2), the outer gear ring (52) is meshingly connected with the gear (4), a retaining ring (51) is coaxially fixed on the other side of the rotating ring (5) in close contact with the side plate (2), a radial linkage positioning mechanism (6) is coaxially provided on the outer gear ring (52), a slide rail (7) is fixed on the upper edge of the table top (1) perpendicular to the direction of the side plate (2), a slide plate (8) is slidably engaged in the slide rail (7), and a non-contact magnetic pressure mechanism (9) is provided on the upper part of the slide plate (8).
2. The electronic detonator bending resistance testing device according to claim 1, characterized in that: The radial linkage positioning mechanism (6) comprises an outer cover (61), the outer cover (61) is coaxially fixed on one side of the outer gear ring (52), the outer cover (61) is a hollow cylindrical structure with an open lower end, a sliding groove (611) is provided in a circumferential array on the surface of the closed end of the outer cover (61), the sliding groove (611) points to the axis of the outer cover (61), a sliding bar (63) is slidably engaged in the inner circumferential array of the sliding groove (611), an arc-shaped clamping plate (631) is fixed at one end of the sliding bar (63) facing the axis of the outer cover (61), an inner ring (62) is coaxially fixed inside the outer cover (61), a rotating disk (66) is coaxially rotated between the outer cover (61) and the inner ring (62), the axis of the rotating disk (66) is open, a base (64) is coaxially fixed at the open end inside the outer cover (61), and the base (64 ) is a hollow cylindrical structure with an opening at the upper end, the lower wall axis of the base (64) is set to be open, the side wall of the base (64) is provided with a through groove (641) in a circumferential array, and a first bevel tooth (65) is provided in the through groove (641), and the two ends of the first bevel tooth (65) are respectively rotatably connected to the outer cover (61) and the inner ring (62), a spiral track (661) is coaxially fixed on the upper side of the turntable (66), and a sliding ridge (632) is irregularly fixed on the lower side of each slide bar (63), and the sliding ridge (632) is tightly slidably arranged between adjacent tracks of the spiral track (661), and a second bevel tooth (662) is coaxially fixed on the lower side of the turntable (66), and the second bevel tooth (662) is vertically meshed with the first bevel tooth (65), and the middle of each arc-shaped clamping plate (631) is equidistant from the axis of the outer cover (61).
3. The electronic detonator bending resistance testing device according to claim 2, characterized in that: The non-contact magnetic pressure mechanism (9) comprises a slide post (91), the slide post (91) is horizontally symmetrical and vertically slides through the slide plate (8), a pressure plate (92) is vertically fixedly provided at one end of the slide post (91) close to the radial linkage positioning mechanism (6), a pressure sensor (93) is fixedly provided between the slide posts (91) on one side of the pressure plate (92), a first magnetic post (94) is coaxially fixedly provided on one side of the pressure sensor (93), a screw rod (95) is vertically passed through the slide post (91) on the slide plate (8), and the screw rod (95) and the slide plate are connected to each other. (8) threaded connection, a second magnetic column (951) is coaxially fixedly provided at one end of the screw rod (95) facing the first magnetic column (94), the second magnetic column (951) is coaxially arranged with the first magnetic column (94), a second motor (96) is provided at the other end of the screw rod (95), the output end of the second motor (96) is coaxially fixedly connected with the screw rod (95), and a limit column (97) is fixedly provided on the upper and lower sides of the screw rod (95) on the side of the slide plate (8) facing away from the pressure plate (92), and the limit column (97) slides through the upper and lower extension parts of the second motor (96).
4. The electronic detonator bending resistance testing device according to claim 3, characterized in that: A rotating rod (651) is coaxially fixedly disposed on one of the first bevel teeth (65), and the rotating rod (651) is located outside the outer cover (61).
5. The electronic detonator bending resistance testing device according to claim 4, characterized in that: Adjacent surfaces of the first magnetic column (94) and the second magnetic column (951) are arranged to repel each other.
6. The electronic detonator bending resistance testing device according to claim 5, characterized in that: The surface of the pressure plate (92) facing away from the pressure sensor (93) is provided with rolling balls (98) in an array and rolling engagement therewith. The upper and lower end surfaces of the pressure plate (92) are at the same length from the extended axis of the outer cover (61).