Pre-breaking trigger rod detection tool
By designing a pre-break trigger rod detection fixture and utilizing a micro-motion detection component and a PLC system, the problem of low detection efficiency of the pre-break unit trigger rod spring was solved, achieving fast and accurate automatic detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN DONGMING ELECTRONICS IND
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-08
AI Technical Summary
In the prior art, the detection efficiency of whether the trigger rod of the pre-splitting unit is equipped with a spring is low and it is easy to miss the detection, making it impossible to detect quickly and accurately.
A pre-break trigger rod detection fixture was designed, including a detection base, an elbow clamp, and a micro-motion detection assembly. The trigger rod is automatically detected through a micro-switch and a PLC system, ensuring the accuracy of spring installation.
It enables rapid and accurate detection of whether the pre-break unit trigger rod is equipped with a spring, avoiding the inefficiency and missed detection problems of manual inspection.
Smart Images

Figure CN224216883U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing tooling, and in particular relates to a testing tooling for a pre-break trigger rod. Background Technology
[0002] During the assembly of the pre-break unit, the trigger rod needs to be installed. The installation of the trigger rod requires the installation of a spring, which is also a crucial component. Without the spring, the pre-break unit cannot function. However, the spring's location is relatively concealed, and the pre-break unit has many assembly parts. If it is discovered after assembly or during use that the spring is missing, disassembling and reinstalling it would take considerable time. Currently, the only method of inspection is through observation by assembly personnel during the assembly process. This method is inefficient and prone to omissions. Therefore, finding a quick way to detect whether the trigger rod has a spring installed is a pressing issue that needs to be addressed. Utility Model Content
[0003] In view of this, the present invention aims to propose a pre-break trigger rod detection fixture to solve the above problems.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] Pre-break trigger rod detection fixture, including detection base, elbow clamp and micro-motion detection assembly;
[0006] The detection base has a groove for inserting the pre-segmentation unit.
[0007] The groove is equipped with a micro-motion detection component for detecting the trigger rod of the pre-splitting unit;
[0008] The detection base is also provided with an elbow clamp on one side, which is used to fix the pre-splitting unit in the groove of the detection base.
[0009] Furthermore, the pre-splitting unit includes a pre-splitting bottom shell, a secondary support, a first trigger rod, and a second trigger rod;
[0010] The pre-segmented bottom shell has a pre-segmented area in the middle, and the pre-segmented area has a first mounting slot for installing the first trigger rod and a second mounting slot for installing the second trigger rod. The auxiliary bracket is installed into the pre-segmented bottom shell to fix the first trigger rod and the second trigger rod.
[0011] Furthermore, one end of the first mounting slot is provided with a first slot, and the other end is provided with a first through hole;
[0012] One end of the No. 2 mounting slot is provided with a limiting post, the middle part is provided with a No. 2 slot, and the other end is provided with a No. 2 through hole.
[0013] Furthermore, the first end of the first trigger rod is provided with a first locking rod, which can be locked into the first slot, and the first trigger rod can rotate with the first locking rod as the rotation point; the second end of the first trigger rod corresponds to the first through hole; the middle part of the first trigger rod is provided with a spring positioning post for installing the first spring.
[0014] The second trigger rod is provided with a second locking rod in the middle. The second locking rod can be locked into the second locking slot, and the second trigger rod can rotate with the second locking rod as the rotation point. One end of the second trigger rod corresponds to the second through hole, and the other end of the second trigger rod is provided with a spring positioning post for installing the second spring.
[0015] The second spring can enter the limiting groove of the limiting post and cooperate with the limiting post.
[0016] Furthermore, the secondary bracket is provided with a through groove for the second trigger rod to swing; one end of the through groove is provided with a protective shell for the protective limiting post;
[0017] The bottom of the sub-support is provided with a recessed hole that mates with the first spring;
[0018] The surface of the sub-support is also provided with a positioning ring, which corresponds to the support positioning column set in the pre-segmented bottom shell. The sub-support is installed in the pre-segmented area to achieve positioning of the sub-support.
[0019] Furthermore, the inner walls of the groove formed by the detection base are provided with protrusions on both sides, with two protrusions on each side inner wall, and the four protrusions are used to position the pre-segmented shell.
[0020] The elbow clamp is provided with a pressing rod at its end, and the pressing rod acts on the top of the secondary support protective shell.
[0021] Furthermore, the micro-motion detection component includes a micro switch, a PLC, and an indicator light;
[0022] The micro switch and indicator light are connected to the PLC, the PLC is connected to the power supply, and the indicator light is installed on the detection base.
[0023] The micro switch includes a first switch corresponding to the first trigger lever and a second switch corresponding to the second trigger lever, both of which are mounted on the surface of the groove via a switch base;
[0024] In the initial state, the tops of the first and second switches are higher than the surface of the groove.
[0025] Compared with the prior art, the pre-break trigger rod detection fixture of this utility model has the following advantages:
[0026] The pre-break trigger rod detection fixture described in this utility model has a simple structure and is easy to operate. It can quickly detect whether the trigger rod in the pre-break unit is equipped with a spring, replacing the manual observation method and avoiding missed detections. Attached Figure Description
[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0028] Figure 1 This is a schematic diagram of the pre-splitting unit placed on the pre-splitting trigger rod detection fixture according to an embodiment of the present invention;
[0029] Figure 2 This is a schematic diagram of the pre-break trigger rod detection fixture described in an embodiment of the present invention;
[0030] Figure 3 This is a schematic diagram of the switch base described in an embodiment of the present utility model;
[0031] Figure 4 This is a schematic diagram of the pre-segmented bottom shell described in an embodiment of the present invention. Figure 1 ;
[0032] Figure 5 This is a schematic diagram of the pre-segmented bottom shell described in an embodiment of the present invention. Figure 2 ;
[0033] Figure 6 This is a schematic diagram of the pre-splitting unit described in an embodiment of the present invention;
[0034] Figure 7 This is a schematic diagram of the installation of the No. 1 trigger rod and the No. 2 trigger rod onto the pre-splitting bottom shell according to an embodiment of this utility model;
[0035] Figure 8 This is a schematic diagram illustrating the cooperation between the secondary bracket and the first and second trigger rods as described in this embodiment of the utility model. Figure 1 ;
[0036] Figure 9 This is a schematic diagram illustrating the cooperation between the secondary bracket and the first and second trigger rods as described in this embodiment of the utility model. Figure 2 .
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Detection base; 11. Groove; 12. Protrusion; 13. Switch base; 2. Elbow clamp; 3. Micro-motion detection assembly; 4. Pre-break unit; 41. Pre-break bottom shell; 411. Mounting slot 1; 412. Mounting slot 2; 413. Slot 1; 414. Through hole 1; 415. Limiting post; 416. Slot 2; 417. Through hole 2; 42. Sub-bracket; 421. Through groove; 422. Protective shell; 423. Recessed hole; 43. Trigger rod 1; 431. Locking rod 1; 432. Spring 1; 44. Trigger rod 2; 441. Locking rod 2; 442. Spring 2. Detailed Implementation
[0039] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0043] Pre-break trigger rod detection fixture, such as Figures 1-9 As shown, it includes a detection base 1, an elbow clamp 2, and a micro-motion detection assembly 3;
[0044] The detection base 1 is provided with a groove 11 for inserting the pre-splitting unit 4.
[0045] The groove 11 is provided with a micro-motion detection component 3, which is used to detect the trigger rod of the pre-splitting unit 4;
[0046] The detection base 1 is also provided with an elbow clamp 2 on one side, which is used to fix the pre-splitting unit 4 in the groove 11 of the detection base 1.
[0047] Preferably, the pre-splitting unit 4 includes a pre-splitting bottom shell 41, a secondary support 42, a first trigger rod 43, and a second trigger rod 44;
[0048] The pre-segmented bottom shell 41 has a pre-segmented area in the middle. The pre-segmented area has a first mounting slot 411 for installing the first trigger rod 43 and a second mounting slot 412 for installing the second trigger rod 44. The auxiliary bracket 42 is installed into the pre-segmented bottom shell 41 to fix the first trigger rod 43 and the second trigger rod 44.
[0049] Preferably, one end of the first mounting slot 411 is provided with a first slot 413, and the other end is provided with a first through hole 414;
[0050] One end of the second mounting groove 412 is provided with a limiting post 415, the middle is provided with a second slot 416, and the other end is provided with a second through hole 417.
[0051] Preferably, the first end of the first trigger rod 43 is provided with a first locking rod 431, which can be locked into the first locking slot 413, and the first trigger rod 43 can rotate around the first locking rod 431 as the rotation point; the second end of the first trigger rod 43 corresponds to the first through hole 414; the middle part of the first trigger rod 43 is provided with a spring positioning post for installing the first spring 432;
[0052] The second trigger rod 44 is provided with a second locking rod 441 in the middle. The second locking rod 441 can be locked into the second locking slot 416, and the second trigger rod 44 can rotate with the second locking rod 441 as the rotation point. One end of the second trigger rod 44 corresponds to the second through hole 417, and the other end of the second trigger rod 44 is provided with a spring positioning post for installing the second spring 442.
[0053] The second spring 442 can enter the limiting groove provided in the limiting post 415 and cooperate with the limiting post 415.
[0054] Preferably, the secondary bracket 42 is provided with a through groove 421 for the second trigger rod 44 to swing; one end of the through groove 421 is provided with a protective shell 422 for the protective limiting post 415;
[0055] The bottom of the sub-support 42 is provided with a recessed hole 423 that mates with the first spring 432;
[0056] The surface of the sub-support 42 is also provided with a positioning ring, which corresponds to the support positioning column provided on the pre-segmented bottom shell 41. The sub-support 42 is installed in the pre-segmented area to realize the positioning of the sub-support 42.
[0057] Preferably, the inner walls of the groove 11 of the detection base 1 are provided with protrusions 12 on both sides, with two protrusions 12 on each side inner wall, and the four protrusions 12 are used to position the pre-segmented shell.
[0058] The elbow clamp 2 is provided with a pressing rod at its end, and the pressing rod acts on the top of the protective shell 422 of the sub-support 42.
[0059] Preferably, the micro-motion detection component 3 includes a micro-switch, a PLC, and an indicator light;
[0060] The micro switch and indicator light are connected to the PLC, the PLC is connected to the power supply, and the indicator light is installed on the detection base 1.
[0061] The micro switch includes a first switch corresponding to the first trigger rod 43 and a second switch corresponding to the second trigger rod 44, both of which are mounted on the surface of the groove 11 via the switch base 13;
[0062] In the initial state, the tops of the first and second switches are higher than the surface of the groove 11.
[0063] Preferably, the switch base 13 has a mounting hole in the middle for mounting a micro switch, and fixing holes communicating with the mounting hole are provided on both sides of the switch base 13. The micro switch is installed into the mounting hole, and then the micro switch is fixed by bolts passing through the fixing holes. The two ends of the switch base 13 are installed onto the detection base 1 by bolts.
[0064] The micro switch, PLC, and indicator light are connected in a conventional manner: connect one end of the micro switch to the input terminal of the PLC and the other end of the micro switch to the common input terminal of the PLC; connect the positive terminal of the indicator light to the output terminal of the PLC and the negative terminal of the indicator light to the common output terminal of the PLC; connect the PLC's power supply terminal to the power supply.
[0065] The working principle is as follows: the first trigger rod 43, with the first spring 432 installed, is snapped into the first mounting slot 411; the second trigger rod 44, with the second spring 442 installed, is snapped into the second mounting slot 412; then the auxiliary bracket 42 is installed. After installation, the pre-splitting unit 4 is placed on the detection base 1 and fixed with the elbow clamp 2. At this time, the first trigger rod 43 and the second trigger rod 44 are pressed by the springs. The conducting micro switch illuminates the indicator light under the control of the PLC. This indicates that the springs are installed completely and there are no missing springs.
[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A pre-break trigger rod detection fixture, characterized in that: Includes a detection base, elbow clamp, and micro-motion detection assembly; The detection base has a groove for inserting the pre-segmentation unit. The groove is equipped with a micro-motion detection component for detecting the trigger rod of the pre-splitting unit; The detection base is also provided with an elbow clamp on one side, which is used to fix the pre-splitting unit in the groove of the detection base.
2. The pre-break trigger rod detection fixture according to claim 1, characterized in that: The pre-splitting unit includes a pre-splitting bottom shell, a secondary support, a first trigger rod, and a second trigger rod; The pre-segmented bottom shell has a pre-segmented area in the middle, and the pre-segmented area has a first mounting slot for installing the first trigger rod and a second mounting slot for installing the second trigger rod. The auxiliary bracket is installed into the pre-segmented bottom shell to fix the first trigger rod and the second trigger rod.
3. The pre-break trigger rod detection fixture according to claim 2, characterized in that: One end of the No. 1 mounting slot is provided with a No. 1 slot, and the other end is provided with a No. 1 through hole; One end of the No. 2 mounting slot is provided with a limiting post, the middle part is provided with a No. 2 slot, and the other end is provided with a No. 2 through hole.
4. The pre-break trigger rod detection fixture according to claim 3, characterized in that: The first end of the first trigger rod is provided with a first locking rod, which can be locked into the first slot, and the first trigger rod can rotate with the first locking rod as the rotation point; the second end of the first trigger rod corresponds to the first through hole; the middle part of the first trigger rod is provided with a spring positioning post for installing the first spring. The second trigger rod is provided with a second locking rod in the middle. The second locking rod can be locked into the second locking slot, and the second trigger rod can rotate with the second locking rod as the rotation point. One end of the second trigger rod corresponds to the second through hole, and the other end of the second trigger rod is provided with a spring positioning post for installing the second spring. The second spring can enter the limiting groove of the limiting post and cooperate with the limiting post.
5. The pre-break trigger rod detection fixture according to claim 4, characterized in that: The secondary bracket is provided with a through groove for the second trigger rod to swing; one end of the through groove is provided with a protective shell for the protective limit post; The bottom of the sub-support is provided with a recessed hole that mates with the first spring; The surface of the sub-support is also provided with a positioning ring, which corresponds to the support positioning column set in the pre-segmented bottom shell. The sub-support is installed in the pre-segmented area to realize the positioning of the sub-support.
6. The pre-break trigger rod detection fixture according to claim 5, characterized in that: The inner walls of the groove formed by the detection base are provided with protrusions on both sides, with two protrusions on each side inner wall. The four protrusions are used to position the pre-segmented shell. The elbow clamp is provided with a pressing rod at its end, and the pressing rod acts on the top of the secondary support protective shell.
7. The pre-break trigger rod detection fixture according to claim 1, characterized in that: The micro-motion detection component includes a micro-switch, a PLC, and an indicator light; The micro switch and indicator light are connected to the PLC, the PLC is connected to the power supply, and the indicator light is installed on the detection base. The micro switch includes a first switch corresponding to the first trigger lever and a second switch corresponding to the second trigger lever, both of which are mounted on the surface of the groove via a switch base; In the initial state, the tops of the first and second switches are higher than the surface of the groove.