Synchronous belt tightness detection tool
By designing a timing belt tension detection fixture, the tension of the timing belt of the sliding door is determined by the change in the distance between the working arm and the detection piece, which solves the detection problem in the existing technology and ensures the normal use of the sliding door.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ZHONGCHENG TRANSPORTATION TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-05
AI Technical Summary
The lack of specific tooling for detecting the tension of the timing belt in sliding doors in the existing technology makes it impossible to ensure the normal use of sliding doors.
A timing belt tension testing fixture was designed, including first and second working arms, a testing area, a spring component, and a testing component. The tension is determined by the change in the distance between the testing component and the working arm when the timing belt comes into contact with the working arm, and the timing belt is judged to be qualified by combining the indicator groove or indicator line.
It enables precise detection of the tension of the timing belt on the sliding door, ensuring the normal use and operation of the sliding door.
Smart Images
Figure CN224327840U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rail transit equipment, specifically relating to a timing belt tension detection tool. Background Technology
[0002] Sliding doors are a common door system structure in rail transit equipment. To ensure the normal operation of sliding doors, the tension of the timing belt on the sliding door needs to be tested during the manufacturing process. However, currently, there is no tooling available specifically designed to test the tension of the timing belt on sliding doors. Utility Model Content
[0003] In order to overcome the above-mentioned technical defects, this utility model provides a timing belt tension detection fixture, which can solve the technical problem that the tension of the timing belt in the existing plug door is difficult to detect.
[0004] This utility model is implemented according to the following technical solution:
[0005] This utility model provides a timing belt tension detection fixture, which includes:
[0006] A first working arm and a second working arm rotatably connected to the first working arm, wherein...
[0007] A detection area is provided between the front section of the first working arm and the front section of the second working arm for contact with the timing belt;
[0008] A spring is provided between the middle section of the first working arm and the middle section of the second working arm;
[0009] The rear section of the first working arm is provided with a first detection element, and the rear section of the second working arm is provided with a second detection element. The longitudinal distance between the first detection element and the second detection element varies according to the tension of the timing belt.
[0010] This application innovatively designs a timing belt tension detection fixture. When detecting the timing belt, the timing belt is located in the detection area and is in contact with the front sections of the first working arm and the second working arm. At this time, the longitudinal distance between the first detection element and the second detection element will change with the tension of the timing belt. The user can judge whether the timing belt is qualified based on the degree of change.
[0011] In one embodiment, the front section of the first working arm is provided with a protrusion that protrudes toward the direction of the second working arm.
[0012] In one embodiment, the middle section of the first working arm is provided with a first positioning member that protrudes toward the direction of the second working arm;
[0013] The middle section of the second working arm is provided with a second positioning member that protrudes toward the direction of the first working arm;
[0014] The upper end of the spring is sleeved on the first positioning member, and the lower end of the spring is sleeved on the second positioning member.
[0015] In one embodiment, the first positioning member is threadedly connected to the first working arm, and the second positioning member is threadedly connected to the second working arm.
[0016] In one embodiment, the first detection element and the second detection element are misaligned in the lateral direction;
[0017] The first or second detection element is provided with a reference groove, and the second or first detection element is provided with an indicator needle; the reference groove and the indicator needle are respectively set.
[0018] In one embodiment, the first detection element and the second detection element are misaligned in the lateral direction;
[0019] The first or second detection element has a reference area, and the second or first detection element has an indicator line; the reference area and the indicator line are correspondingly arranged.
[0020] In one embodiment, the first detection element is detachably connected to the first working arm, and the second detection element is detachably connected to the second working arm.
[0021] In one embodiment, the first working arm is rotatably connected to the second working arm via a pivot.
[0022] In one embodiment, the first working arm includes a first forearm portion and a first rear arm portion, the first rear arm portion being bent at an angle α relative to the first forearm portion, and the first detection element being located in the first rear arm portion;
[0023] The second working arm includes a second forearm portion and a second rear arm portion. The second rear arm portion is bent at an angle α relative to the second forearm portion, and the second detection element is located in the second rear arm portion.
[0024] In one embodiment, the angle α ranges from 90° to 150°. Attached Figure Description
[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:
[0026] Figure 1 This is a perspective view of the timing belt tension detection fixture of this utility model;
[0027] Figure 2 This is a side view of the timing belt tension detection fixture of this utility model;
[0028] Figure 3 This is a side view of the timing belt tension testing fixture of this utility model during timing belt testing;
[0029] Figure 4 This is a front view of the timing belt tension detection fixture of this utility model.
[0030] Explanation of reference numerals in the attached figures:
[0031] 10 First working arm, 101 Protrusion, 102 First positioning component, 110 First detection component, 111 Reference groove, 20 Second working arm, 202 Second positioning component, 210 Second detection component, 2111 Indicator needle, 30 Detection area, 40 Spring component, 50 Rotating shaft, 60 Synchronous belt. Detailed Implementation
[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0033] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.
[0034] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.
[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0036] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0037] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0038] Combination Figures 1 to 4 As shown, this utility model provides a timing belt tension detection fixture, which includes: a first working arm 10 and a second working arm 20 rotatably connected to the first working arm 10, wherein a detection area 30 is provided between the front section of the first working arm 10 and the front section of the second working arm 20 for contacting the timing belt; a spring member 40 is provided between the middle section of the first working arm 10 and the middle section of the second working arm 20; a first detection member 110 is provided at the rear section of the first working arm 10, and a second detection member 210 is provided at the rear section of the second working arm 20, wherein the longitudinal distance between the first detection member 110 and the second detection member 210 varies according to the tension of the timing belt.
[0039] Specifically, when the timing belt tension testing fixture of this application tests the timing belt 60, the first working arm 10 contacts the upper part of the timing belt, and the second working arm 20 contacts the lower part of the timing belt. The timing belt applies an outward force to the first working arm 10 and the second working arm 20, causing the first working arm 10 to rotate relative to the second working arm 20. At this time, the user can observe the longitudinal distance between the first detection element 110 and the second detection element 210 to determine whether the timing belt is qualified. The spring element 40 provides elastic force to the first working arm 10 and the second working arm 20, providing stability for the user's observation.
[0040] This application innovatively designs a timing belt tension detection fixture. When detecting the timing belt, the timing belt is located in the detection area 30 and is in contact with the front section of the first working arm 10 and the front section of the second working arm 20. At this time, the longitudinal distance between the first detection element 110 and the second detection element 210 will change with the tension of the timing belt. The user can judge whether the timing belt is qualified based on the degree of change.
[0041] In this embodiment, the front section of the first working arm 10 is provided with a protrusion 101 protruding toward the second working arm 20, which is used to press down on the upper part of the timing belt. Preferably, the contact surface of the protrusion 101 is arc-shaped to avoid damaging the timing belt.
[0042] In this embodiment, the middle section of the first working arm 10 is provided with a first positioning member 102 protruding toward the second working arm 20; the middle section of the second working arm 20 is provided with a second positioning member 202 protruding toward the first working arm 10; the upper end of the spring member 40 is sleeved on the first positioning member 102, and the lower end of the spring member 40 is sleeved on the second positioning member 202. The first and second protrusions are used to position the spring member 40 to prevent the spring member 40 from loosening.
[0043] Furthermore, the first positioning member 102 is threadedly connected to the first working arm 10, and the second positioning member 202 is threadedly connected to the second working arm 20. After positioning the spring member 40, the first positioning member 102 and the second positioning member 202 are screwed into the timing belt tension detection fixture to fix the position of the spring member 40. Preferably, the first working arm 10 has a threaded hole, the second working arm 20 has a threaded hole, and both the first positioning member 102 and the second positioning member 202 are bolts.
[0044] In this embodiment, the first detection element 110 and the second detection element 210 are offset in the lateral direction. The first detection element 110 is provided with a reference groove 111, and the second detection element 210 is provided with an indicator needle 2111. The reference groove 111 and the indicator needle 2111 are correspondingly arranged. Specifically, when the timing belt is qualified, the line where the indicator needle 2111 is located is inside the reference groove 111; when the timing belt is too loose, the line where the indicator needle 2111 is located is outside the reference groove 111, and the indicator needle 2111 is set slightly lower relative to the reference groove 111; when the timing belt is too tight, the line where the indicator needle 2111 is located is outside the reference groove 111, and the indicator needle 2111 is set slightly higher relative to the reference groove 111. In other embodiments, the second detection element 210 is provided with a reference groove 111, and the first detection element 110 is provided with an indicator needle 2111; the reference groove 111 and the indicator needle 2111 are correspondingly arranged.
[0045] As a variation of the technical solution, in other embodiments, the first detection element 110 and the second detection element 210 are offset in the lateral direction; the first detection element 110 has a reference area, and the second detection element 210 has an indicator line; the reference area and the indicator line are correspondingly arranged. Similarly, when the timing belt is qualified, the straight line containing the indicator line is located within the reference area; when the timing belt is too loose, the straight line containing the indicator line is located outside the reference area, and the indicator line is set slightly lower than the reference area; when the timing belt is too tight, the straight line containing the indicator line is located outside the reference area, and the indicator line is set slightly higher than the reference area. In other embodiments, the second detection element 210 has a reference area, and the first detection element 110 has an indicator line; the reference area and the indicator line are correspondingly arranged.
[0046] In this embodiment, the first detection element 110 is detachably connected to the first working arm 10, and the second detection element 210 is detachably connected to the second working arm 20, facilitating the assembly and production of the first detection element 110 and the second detection element 210. Both the first detection element 110 and the second detection element 210 are provided with elongated holes for easy fine-tuning.
[0047] In this embodiment, the first working arm 10 is rotatably connected to the second working arm 20 via a rotating shaft 50.
[0048] In this embodiment, the first working arm 10 includes a first forearm portion and a first rear arm portion, the first rear arm portion being bent at an angle α relative to the first forearm portion, and the first detection element 110 is located in the first rear arm portion; the second working arm 20 includes a second forearm portion and a second rear arm portion, the second rear arm portion being bent at an angle α relative to the second forearm portion, and the second detection element 210 is located in the second rear arm portion. Since the timing belt is located on the side of the sliding door device, this embodiment uses a bending design so that when detecting the timing belt, the user can better observe the first detection element 110 and the second detection element 210.
[0049] Furthermore, the angle α ranges from 90° to 150°, and preferably, the angle α is 90°.
[0050] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A tooling for detecting the tension of a synchronous belt, characterized in that, include: A first working arm and a second working arm rotatably connected to the first working arm, wherein... A detection area is provided between the front section of the first working arm and the front section of the second working arm for contact with the timing belt; A spring is provided between the middle section of the first working arm and the middle section of the second working arm; The rear section of the first working arm is provided with a first detection element, and the rear section of the second working arm is provided with a second detection element. The longitudinal distance between the first detection element and the second detection element varies according to the tension of the timing belt.
2. The timing belt tension detection fixture according to claim 1, characterized in that: The front section of the first working arm is provided with a protrusion that protrudes toward the direction of the second working arm.
3. The timing belt tension detection fixture according to claim 1, characterized in that: The middle section of the first working arm is provided with a first positioning member that protrudes toward the direction of the second working arm; The middle section of the second working arm is provided with a second positioning member that protrudes toward the direction of the first working arm; The upper end of the spring is sleeved on the first positioning member, and the lower end of the spring is sleeved on the second positioning member.
4. The timing belt tension detection fixture according to claim 3, characterized in that: The first positioning component is threadedly connected to the first working arm, and the second positioning component is threadedly connected to the second working arm.
5. The timing belt tension detection fixture according to claim 1, characterized in that: In the lateral direction, the first detection element and the second detection element are misaligned; The first or second detection element is provided with a reference groove, and the second or first detection element is provided with an indicator needle; the reference groove and the indicator needle are respectively set.
6. The timing belt tension detection fixture according to claim 1, characterized in that: In the lateral direction, the first detection element and the second detection element are misaligned; The first or second detection element has a reference area, and the second or first detection element has an indicator line; the reference area and the indicator line are correspondingly arranged.
7. The timing belt tension detection fixture according to claim 1, characterized in that: The first detection component is detachably connected to the first working arm, and the second detection component is detachably connected to the second working arm.
8. The timing belt tension detection fixture according to claim 1, characterized in that: The first working arm is rotatably connected to the second working arm via a pivot.
9. The timing belt tension detection fixture according to claim 1, characterized in that: The first working arm includes a first forearm portion and a first rear arm portion, the first rear arm portion is bent at an angle α relative to the first forearm portion, and the first detection element is located in the first rear arm portion; The second working arm includes a second forearm portion and a second rear arm portion. The second rear arm portion is bent at an angle α relative to the second forearm portion, and the second detection element is located in the second rear arm portion.
10. The timing belt tension detection fixture according to claim 9, characterized in that: The angle α is in the range of 90° to 150°.