Auxiliary tool for detecting tightness of transmission belt

Abstract

The utility model relates to the technical field of belt transmission mechanisms, in particular to a transmission belt tightness detection assistive device, and mainly solves the technical problem that the installation tightness of an existing transmission belt cannot be guaranteed. The transmission belt tightness detection assistive device comprises a pressing rod used for being pressed on a transmission belt in the width direction of the transmission belt, and the length of the pressing rod is larger than the width of the transmission belt so that the two ends of the pressing rod can extend out of the transmission belt; the pull rod is of a U-shaped structure, and the two ends of the pull rod are detachably connected with the two ends of the pressing rod correspondingly; a hook of the spring scale is connected to the middle of the pull rod; and the leveling ruler is pressed on the transmission belt along the length direction of the transmission belt. The transmission belt tightness detection assistive device provided by the utility model is simple and convenient to operate, and can detect the mounting tightness of the transmission belt on site in real time, thereby ensuring that the tightness of the transmission belt meets the design requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of belt transmission mechanisms, in particular to an auxiliary tool for detecting the tightness of a transmission belt. Background Art

[0002] In mechanical transmission equipment, belt drive mechanism is a commonly used transmission structure. The belt drive mechanism is mainly composed of a transmission belt and two pulleys. The two pulleys are respectively a driving pulley and a driven pulley. The transmission belt is wound around the driving pulley and the driven pulley. The driving pulley is driven to rotate through the transmission belt to link the driven pulley to rotate.

[0003] There are no relevant technical requirements for the installation of existing belt transmission mechanisms, and workers generally install them based on their own experience. However, if the transmission belt is installed too loosely, it is easy to cause slippage during operation, affecting the transmission efficiency; if the transmission belt is installed too tightly, not only will the belt be severely worn, affecting its life, but the tension is large, and it is easy to cause side bending of the transmission shaft and eccentric wear of the belt. Therefore, there is an urgent need for a transmission belt tightness detection auxiliary tool to perform real-time detection after the transmission belt is installed. Utility Model Content

[0004] In order to overcome the technical defect that the tightness of the existing transmission belt cannot be guaranteed during installation, the utility model provides a transmission belt tightness detection auxiliary tool.

[0005] The utility model provides a transmission belt tightness detection auxiliary tool, comprising:

[0006] A pressure rod, which is used to be pressed on the transmission belt along the width direction of the transmission belt, and the length of the pressure rod is greater than the width of the transmission belt so that both ends of the pressure rod can extend outward from the transmission belt;

[0007] A pull rod, which is a U-shaped structure and has two ends respectively used for detachable connection with two ends of the pressure rod;

[0008] a spring balance, the hook of which is connected to the middle of the pull rod;

[0009] A straight ruler is used to press the belt and the two pulleys at two tangent points along the length of the belt.

[0010] Optionally, the cross-section of the pressure rod is a circular segment, and when the pull rod is connected to the pressure rod, the surface of the pull rod is perpendicular to the side of the pressure rod corresponding to the straight side of the circular segment and the side of the pressure rod corresponding to the straight side of the circular segment is away from the pressure rod.

[0011] Optionally, the arc side of the circular segment is a major arc.

[0012] Optionally, both ends of the pressure rod are provided with clamping parts, and both ends of the pull rod are provided with buckling parts, and the clamping parts are hooked with the buckling parts to realize the detachable connection between the pull rod and the pressure rod.

[0013] Optionally, a flat block is provided at the end of the pressure rod to form the clamping portion, and a frame is provided at the end of the pull rod to form the buckling portion, and the flat block is placed in the frame to complete the hooking of the clamping portion and the buckling portion.

[0014] Optionally, the pull rod includes two obtuse-angled folding rods, the folding rods include a mounting rod and a connecting rod, the two folding rods are symmetrically distributed and the two connecting rods are butt-jointed, the two mounting rods are parallel to each other, the end of the mounting rod away from the connecting rod is used to connect the pressure rod, and the hook of the spring scale is connected to the joint of the two connecting rods.

[0015] Optionally, the hook of the spring scale is hooked to the pull rod.

[0016] Compared with the prior art, the technical solution provided by the utility model has the following advantages:

[0017] The utility model provides a transmission belt tightness detection auxiliary tool, which includes a pressure rod, a pull rod and a spring scale. When in use, the pressure rod is pressed on the transmission belt along the width direction of the transmission belt, and then the pull rod and the pressure rod are connected. Then the transmission belt is pulled through the spring scale, and a flat ruler is pressed on two tangents between the transmission belt and two pulleys along the length direction of the transmission belt. Then the transmission belt is pulled in a direction perpendicular to the transmission belt until the spring scale reaches the design value, and finally the distance between the pressure rod and the flat ruler is measured. The distance can reflect the tightness of the transmission belt. The measurement auxiliary tool is simple and convenient to operate, and can detect the tightness of the transmission belt installation in real time, so as to ensure that the tightness of the transmission belt meets the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A front view showing a transmission belt tightness measuring aid in an embodiment of the utility model;

[0021] Figure 2 A top view showing a transmission belt tightness measuring aid in an embodiment of the utility model;

[0022] Figure 3 A diagram showing the use state of the transmission belt tightness measuring aid in the embodiment of the utility model;

[0023] Figure 4 express Figure 3 A partial enlarged view of point A in the middle.

[0024] In the figure:

[0025] 1. Press rod; 11. Clamping part; 2. Pull rod; 21. Snap-fit ​​part; 22. Mounting rod; 23. Connecting rod; 3. Spring scale; 4. Level ruler. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Reference Figures 1 to 4 The present embodiment provides a transmission belt tightness detection auxiliary device, comprising a pressure rod 1, a pull rod 2, a spring scale 3 and a flat ruler 4. The pressure rod 1 is used to be pressed on the transmission belt along the width direction of the transmission belt, and the length of the pressure rod 1 is greater than the width of the transmission belt so that both ends of the pressure rod 1 can extend outward from the transmission belt; the pull rod 2 is a U-shaped structure and both ends are used to be detachably connected to the two ends of the pressure rod 1; the spring scale 3 is hooked and connected to the middle of the pull rod 2; the flat ruler 4 is used to be pressed on two tangents between the transmission belt and the two pulleys along the length direction of the transmission belt.

[0030] Specifically, the pressure rod 1 adopts the following shape: the cross section of the pressure rod 1 is a circular segment, and when the pull rod 2 is connected to the pressure rod 1, the surface of the pull rod 2 is perpendicular to the side of the pressure rod 1 corresponding to the straight side of the circular segment, and the side of the pressure rod 1 corresponding to the straight side of the circular segment is away from the pressure rod 1. Such a structure has two advantages: first, the side of the pressure rod 1 corresponding to the straight side of the circular segment is a plane, and when the pull rod 2 is connected to the pressure rod 1, since the surface of the pull rod 2 is perpendicular to the side of the pressure rod 1 corresponding to the straight side of the circular segment, and the flat ruler 4 is pressed on the transmission belt along the length direction of the transmission belt, it is only necessary to ensure that the side of the pressure rod 1 corresponding to the straight side of the circular segment is parallel to the flat ruler 4 to ensure that the force direction of the spring scale 3 is perpendicular to the transmission belt, and the operation is simpler; second, when the pull rod 2 is connected to the pressure rod 1, the arc surface of the circular segment contacts the transmission belt, ensuring that the two are in line contact when force is applied, and the transmission belt is deformed as much as possible, and the measurement accuracy is higher. Of course, the pressure rod 1 can also be cylindrical, and the direction of force applied can be manually ensured to be perpendicular to the transmission belt when force is applied; it can also be prismatic, but the pressure rod 1 is in surface contact with the transmission belt, the contact area between the transmission belt and the pressure rod 1 is increased, the deformation of the transmission belt in this area is hindered by friction, the measurement accuracy is reduced, and the edges of the pressure rod 1 are in contact with the transmission belt, which can easily damage the transmission belt.

[0031] More specifically, the arc edge of the circle is a major arc. The major arc can prevent the straight edge of the circle from contacting the transmission belt, thereby preventing the straight edge from damaging the transmission belt when the transmission belt is greatly deformed. Of course, the arc edge of the circle can also be a minor arc or a semicircle.

[0032] Furthermore, the pressure rod 1 is provided with the following improved structure: a clamping portion 11 is provided at both ends of the pressure rod 1, and a buckling portion 21 is provided at both ends of the pull rod 2, and the clamping portion 11 is hooked with the buckling portion 21 to realize the detachable connection between the pull rod 2 and the pressure rod 1. The cooperation between the clamping portion 11 and the buckling portion 21 can ensure that the relative position of the pressure rod 1 and the pull rod 2 is fixed, so that when in use, only the position of the pressure rod 1 relative to the transmission belt needs to be adjusted to ensure that the force application direction is perpendicular to the transmission belt, which is more convenient to operate.

[0033] Specifically, the clamping part 11 and the buckling part 21 adopt the following structure: a flat block is provided at the end of the pressure rod 1 to form the clamping part 11, and a frame is provided at the end of the pull rod 2 to form the buckling part 21, and the flat block is placed in the frame to complete the hanging of the clamping part 11 and the buckling part 21. When in use, the pressure rod 1 is first pressed on the transmission belt, and the flat block is exposed on both sides of the transmission belt, and then the frame is hung on the flat block. Of course, the buckling part 21 can also adopt a square hook adapted to the clamping part 11.

[0034] It should be noted that the area enclosed by the frame should be larger than the area of ​​the flat block, so that when hanging, the flat blocks at both ends can be inserted into the corresponding frame by tilting the pressure rod 1 or the pull rod 2 to complete the installation.

[0035] Specifically, the pull rod 2 adopts the following structure: the pull rod 2 includes two obtuse-angled folding rods, the folding rod includes a mounting rod 22 and a connecting rod 23, the two folding rods are symmetrically distributed and the two connecting rods 23 are butted, the two mounting rods 22 are parallel to each other, the end of the mounting rod 22 away from the connecting rod 23 is used to connect the pressure rod 1, and the hook of the spring scale 3 is connected to the butt joint of the two connecting rods 23. This type of pull rod 2 can use the structural characteristics to automatically make the spring scale 3 act on the center position of the pull rod 2 when applying force, so as to ensure that the transmission belt is evenly stressed and further ensure the accuracy of the detection. Of course, the pull rod 2 can also be a common U-shaped structure, and the force application point is manually controlled when applying force so that it acts on the middle of the pull rod 2.

[0036] Specifically, the connection structure of the spring balance 3 and the pull rod 2 is as follows: the hook of the spring balance 3 is hooked with the pull rod 2. The so-called hooking means that the hook can be connected to the pull rod 2 and can also be removed from the pull rod 2. In this way, the spring balance 3 can be connected to the pull rod 2 when in use, and the spring balance 3 can be detached from the pull rod 2 when not in use, which is convenient for storage and more flexible in use. Of course, the hook of the spring balance 3 can also be directly fixedly connected to the pull rod 2 or hinged, etc.

[0037] The working process of the transmission belt tightness detection auxiliary tool of this embodiment is as follows:

[0038] 1) Determine the load value and deflection value of the transmission belt according to the design size and selection of the transmission belt;

[0039] 2) Place the pressure rod 1 in the detection auxiliary tool in the middle of the transmission belt (in the middle of the tangent point of the two transmission belts), so that the arc surface of the pressure rod 1 is close to the transmission belt to ensure line contact when force is applied;

[0040] 3) Hang the pull rod 2 on the flat blocks at both ends of the pressure rod 1 to ensure that the pressure rod 1 is vertically pressed on the transmission belt (before applying force);

[0041] 4) Hold the spring scale 3 and hang the hook of the spring scale 3 on the pull rod 2, gently pull the spring scale 3, put the ruler 4 on the transmission belt, adjust the force direction, ensure that the plane of the pressure rod 1 is parallel to the surface of the ruler 4, and indirectly ensure that the force direction on the transmission belt is perpendicular to the transmission belt;

[0042] 5) Pull the spring scale 3 to reach the designed load value, measure the distance between the ruler 4 and the plane of the pressure rod 1, and add the thickness H of the pressure rod 1 to get the deflection value of the transmission belt;

[0043] 6) Compared with the design deflection value, if it is greater than the design deflection value, it means that the transmission belt is installed too loosely, and the installation distance between the two pulleys should be increased; if it is less than the design deflection value, it means that the transmission belt is installed too tight, and the installation distance between the two pulleys should be reduced;

[0044] 7) Repeat the above measurement process until the deflection value reaches the design requirements.

[0045] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A transmission belt tightness detection aid, characterized in that: include: A pressure rod (1) is used to be pressed onto the transmission belt along the width direction of the transmission belt, and the length of the pressure rod (1) is greater than the width of the transmission belt so that both ends of the pressure rod (1) can extend outward from the transmission belt; A pull rod (2) having a U-shaped structure and two ends thereof are respectively used for detachably connecting to two ends of the pressure rod (1); A spring balance (3), the hook of which is connected to the middle part of the pull rod (2); A flat ruler (4) is used for pressing on two tangents between the transmission belt and the two pulleys along the length direction of the transmission belt.

2. The transmission belt tightness detection aid according to claim 1, characterized in that: The cross section of the pressure rod (1) is a circular segment, and when the pull rod (2) is connected to the pressure rod (1), the surface of the pull rod (2) is perpendicular to the side of the pressure rod (1) corresponding to the straight side of the circular segment, and the side of the pressure rod (1) corresponding to the straight side of the circular segment faces away from the pressure rod (1).

3. The transmission belt tightness detection aid according to claim 2, characterized in that: The arc side of the circular gap is the major arc.

4. The transmission belt tightness detection aid according to claim 1, characterized in that: The two ends of the pressure rod (1) are provided with clamping parts (11), and the two ends of the pull rod (2) are provided with buckling parts (21), and the clamping parts (11) and the buckling parts (21) are hooked to achieve a detachable connection between the pull rod (2) and the pressure rod (1).

5. The transmission belt tightness detection aid according to claim 4, characterized in that: The end of the pressure rod (1) is provided with a flat block to form the clamping portion (11), the end of the pull rod (2) is provided with a frame to form the buckling portion (21), and the flat block is placed in the frame to complete the hanging connection between the clamping portion (11) and the buckling portion (21).

6. The transmission belt tightness detection aid according to any one of claims 1 to 5, characterized in that: The pull rod (2) comprises two obtuse-angled folding rods, the folding rods comprising a mounting rod (22) and a connecting rod (23), the two folding rods are symmetrically distributed and the two connecting rods (23) are butt-jointed, the two mounting rods (22) are parallel to each other, the ends of the mounting rods (22) away from the connecting rods (23) are used to connect the pressure rod (1), and the hook of the spring balance (3) is connected to the butt joint of the two connecting rods (23).

7. The transmission belt tightness detection aid according to any one of claims 1 to 5, characterized in that: The hook of the spring balance (3) is hooked to the pull rod (2).

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