Device for detecting elastic force of compression spring

Abstract

The utility model discloses an elastic force detection device for a compression spring. The elastic force detection device comprises a bottom plate; a side plate; the positioning column is arranged on the bottom plate, and a compression spring to be tested is sleeved with the positioning column; the dynamometer comprises a pressure plate, and the pressure plate is located above the positioning column; the cylinder is arranged on the side plate, a piston of the cylinder is connected with the dynamometer, the dynamometer moves up and down along with the piston, and the stroke of the piston is a determined stroke; and the pneumatic control valve is used for controlling the piston. In the utility model, the natural length of the compression spring is determined, the stroke of the cylinder is determined, and as long as the position of the cylinder or the initial position of the piston is set to be proper, the piston can be ensured to carry the dynamometer to apply the determined compression amount to the compression spring. After the piston carries the dynamometer to move downwards to a lower limit position, the force value on the dynamometer is observed, and the accurate elastic force value of the compression spring can be obtained by combining the determined compression amount.

Description

Technical Field

[0001] The utility model relates to the field of compression spring detection, in particular to a compression spring elastic force detection device. Background Art

[0002] When testing the elastic force of a compression spring, it is necessary to measure the elastic force of the compression spring and the corresponding compression amount. In the prior art, manual testing is mostly used to compress the compression spring manually. However, if the human hand is too heavy or too light, it will lead to a large difference in the test value.

[0003] Therefore, how to design a compression spring force detection device to improve the accuracy of compression spring force detection is a key issue that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to design a compression spring elastic force detection device to improve the accuracy of compression spring elastic force detection.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A compression spring force detection device, comprising:

[0007] Base plate;

[0008] Side panels;

[0009] A positioning column, wherein the positioning column is arranged on the bottom plate, the positioning column is provided with a compression spring to be tested, and the length of the positioning column is less than the length of the compression spring to be tested;

[0010] A dynamometer, the dynamometer comprising a pressure plate, the pressure plate being used to contact the top end surface of the compression spring to be measured, the pressure plate being located above the positioning column;

[0011] A cylinder, wherein the cylinder is arranged on the side plate, a piston of the cylinder is connected to the dynamometer, the dynamometer moves up and down with the piston, and the stroke of the piston is a determined stroke;

[0012] An air-controlled valve is used to control the movement direction of the piston.

[0013] Preferably, the piston passes through the cylinder body of the cylinder, a blocking portion is provided on the portion of the piston located above the cylinder body, and the upper end of the cylinder body blocks the blocking portion.

[0014] Preferably, the cylinder body of the cylinder is fastened to the side plate by fastening bolts, and the side plate is provided with bolt holes adapted to the fastening bolts, and the bolt holes are elongated holes extending in the up-down direction.

[0015] Preferably, the number of the fastening bolts is two and they are arranged along the elongated hole.

[0016] Preferably, the air-controlled valve is a manual valve, which includes a handle. When the handle is turned downward, the manual valve connects the upper air cavity and the air source of the cylinder; when the handle is turned upward, the manual valve connects the lower air cavity and the air source of the cylinder.

[0017] Preferably, an upper speed regulating joint and a lower speed regulating joint are provided on the cylinder body of the cylinder, the upper air chamber of the cylinder is connected to the air source through the upper speed regulating joint, and the lower air chamber of the cylinder is connected to the air source through the lower speed regulating joint.

[0018] Preferably, it also includes a length scale arranged on the side plate, the length scale includes a scale and a cursor slidably sleeved on the scale, the scale is arranged up and down, and the cursor is connected to the dynamometer through a connecting rod.

[0019] Preferably, it also includes an upper scale pad and a lower scale pad, both of which are connected to the side panel, both of which protrude from the side panel, the upper end of the scale is connected to the surface of the upper scale pad away from the side panel, and the lower end of the scale is connected to the surface of the lower scale pad away from the side panel.

[0020] Preferably, the upper end of the ruler is locked on the upper ruler pad by an upper bolt, and an upper bolt hole adapted to the upper bolt is provided on the upper end of the ruler, and the upper bolt hole is an upper long hole extending in a direction away from or close to the dynamometer;

[0021] The lower end of the ruler is locked on the lower ruler pad by a lower bolt, and a lower bolt hole adapted to the lower bolt is arranged on the lower end of the ruler, and the lower bolt hole is a lower long hole extending in a direction away from or close to the dynamometer.

[0022] Preferably, the piston is connected to a connecting plate, a side of the connecting plate facing away from the piston is connected to a conversion plate, and a side of the conversion plate facing away from the connecting plate is connected to the dynamometer.

[0023] It can be seen from the above technical solution that in the present invention, the natural length of the compression spring is determined, the stroke of the cylinder is determined, and as long as the position of the cylinder, or the initial position of the piston, is set appropriately, it can be ensured that the piston carrying the dynamometer applies a certain amount of compression to the compression spring. When the piston carrying the dynamometer moves down to the lower limit position, the force value on the dynamometer is observed, and combined with the determined compression amount, the accurate elastic force value of the compression spring can be obtained. The detection device in the present invention can apply an accurate amount of compression to the compression spring, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 It is a front view of the compression spring elastic force detection device disclosed in the specific implementation of the utility model;

[0026] Figure 2 A top view of a compression spring force detection device disclosed in an embodiment of the utility model;

[0027] Figure 3 It is a side view of the compression spring force detection device disclosed in the embodiment of the utility model.

[0028] The names of the components are as follows:

[0029] 1-base plate, 2-side plate, 3-dynamometer, 4-manual valve, 5-length scale, 6-pressure plate, 7-positioning column, 8-cylinder, 9-upper speed regulating joint, 10-upper scale pad, 11-connecting plate, 12-conversion plate, 13-lower speed regulating joint, 14-lower scale pad. DETAILED DESCRIPTION

[0030] In view of this, the core of the utility model is to design a compression spring elastic force detection device to improve the accuracy of compression spring elastic force detection.

[0031] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Please refer to the attached Figure 1 -Attached Figure 3 The utility model discloses a compression spring elastic force detection device, which includes: a bottom plate 1, a side plate 2, a positioning column 7, a dynamometer 3, a cylinder 8 and a gas control valve.

[0033] The bottom plate 1 is arranged horizontally, and the side plate 2 is arranged vertically perpendicular to the bottom plate 1. The bottom plate 1 and the side plate 2 can be connected by bolts. The side plate 2 and the bottom plate 1 form a right angle. The positioning column 7 is arranged on the bottom plate 1, and the positioning column 7 is arranged vertically. The compression spring to be tested can be mounted outside the positioning column 7. The positioning column 7 constrains the compression spring to prevent the compression spring from moving randomly when it is compressed. The length of the positioning column 7 is less than the length of the compression spring. The difference in length between the positioning column 7 and the compression spring is greater than or equal to the compression amount of the compression spring.

[0034] The cylinder 8 is fixedly arranged on the side plate 2. The piston of the cylinder 8 can move up and down. The piston is connected to the dynamometer 3, and the piston drives the dynamometer 3 to move up and down. The stroke of the cylinder 8 in the utility model is fixed. The air control valve is used to control the movement direction of the piston.

[0035] In the present invention, the natural length of the compression spring is determined, and the stroke of the cylinder 8 is determined. As long as the position of the cylinder 8, or the initial position of the piston, is set appropriately, it can be ensured that the piston carrying the dynamometer 3 applies a certain amount of compression to the compression spring. When the piston carrying the dynamometer 3 moves down to the lower limit position, the force value on the dynamometer 3 is observed, and combined with the determined compression amount, the accurate elastic force value of the compression spring can be obtained. The detection device in the present invention can apply an accurate amount of compression to the compression spring, thereby improving the detection accuracy.

[0036] In order to facilitate the connection between the piston and the dynamometer 3, the specific embodiment of the utility model is provided with a connecting plate 11 and a conversion plate 12. The connecting plate 11 is connected to the piston, the side of the connecting plate 11 facing away from the piston is connected to the conversion plate 12, and the side of the conversion plate 12 facing away from the connecting plate 11 is connected to the dynamometer 3.

[0037] The stroke determined by the cylinder 8 can be realized by a solenoid valve. In a specific embodiment of the utility model, the stroke of the cylinder 8 is determined in the following manner: the piston of the cylinder 8 penetrates the cylinder body of the cylinder 8, and a blocking portion is connected to the portion of the piston located above the cylinder body. The upper end surface of the cylinder body forms a blockage with the blocking portion. In the process of the piston moving downward, if the blocking portion touches the upper end surface of the cylinder body, the piston can no longer move downward, so that the stroke of the piston is determined. The blocking portion can be connected to the piston by bolts. The blocking portion can also be designed to be adjustable up and down to change the determined stroke of the cylinder 8.

[0038] In the specific embodiment of the utility model, the cylinder body of the cylinder 8 is fastened to the side plate 2 by fastening bolts. The side plate 2 is provided with bolt holes adapted to the fastening bolts, and the bolt holes are long holes extending in the up-down direction. When the stroke of the cylinder 8 is determined, by adjusting the up-down position of the cylinder 8, that is, adjusting the initial position of the piston, a certain amount of compression can be applied to compression springs of different models, thereby broadening the scope of application of the detection device.

[0039] The cylinder body of the cylinder 8 is specifically locked on the side plate 2 by two fastening bolts. The two fastening bolts can ensure the firmness of the cylinder body connection and prevent the cylinder body from rotating arbitrarily, thereby improving the detection accuracy.

[0040] The air control valve in the utility model is a manual valve 4, which includes a handle. The manual valve 4 is used to control the conduction or cutoff of the air source and the upper air cavity or the lower air cavity. The utility model sets the manual valve 4 in the following manner: when the handle is pulled downward, the manual valve 4 conducts the air source with the upper air cavity of the cylinder 8, and the piston moves downward. When the handle is pulled upward, the manual valve 4 conducts the air source with the lower air cavity of the cylinder 8, and the piston moves upward. When the handle is pulled downward, the piston moves downward; when the handle is pulled upward, the piston moves upward. Such a setting complies with the operator's behavioral habits and prevents misoperation.

[0041] An upper speed regulating joint 9 and a lower speed regulating joint 13 are provided on the cylinder body of the cylinder 8 of the utility model. The upper air chamber of the cylinder 8 is connected to the air source through the upper speed regulating joint 9. The lower air chamber of the cylinder 8 is connected to the air source through the lower speed regulating joint 13. By adjusting the upper speed regulating joint 9, the downward movement speed of the piston can be adjusted. By adjusting the lower speed regulating joint 13, the upward movement speed of the piston can be adjusted. When the piston moves downward, the pressure plate 6 on the dynamometer 3 will squeeze the compression spring. By adjusting the speed at which the piston moves downward, the speed at which the pressure plate 6 squeezes the compression spring can be controlled, thereby ensuring that the compression spring contracts stably.

[0042] The detection device in the utility model also includes a length scale 5. The length scale 5 specifically includes a scale and a vernier. The vernier sliding sleeve is arranged on the scale. The scales are arranged up and down, and the vernier slides up and down along the scale. The vernier is connected to the dynamometer 3 through a connecting rod, and moves up and down with the dynamometer 3. In this way, after the piston of the cylinder 8 moves down from the initial position to the lower limit position, the actual downward stroke of the piston can be measured by the length scale 5. Since the distance between the initial position of the piston of the cylinder 8 and the upper end face of the compression spring is fixed, the difference between the downward stroke and the distance between the initial position of the piston and the upper end face of the compression spring is the actual compression amount. In this way, it is possible to detect whether the compression amount applied to the compression spring is accurate.

[0043] The detection device in the utility model also includes an upper scale pad 10 and a lower scale pad 14. The upper scale pad 10 and the lower scale pad 14 are arranged up and down. The upper scale pad 10 and the lower scale pad 14 are both connected to the side plate 2. The upper scale pad 10 and the lower scale pad 14 both protrude from the side plate 2 in the horizontal direction. The upper end of the scale is connected to the surface of the upper scale pad 10 away from the side plate 2, and the lower end of the scale is connected to the surface of the lower scale pad 14 away from the side plate 2. Since the upper scale pad 10 and the lower scale pad 14 both protrude from the side plate 2, the scale can be aligned with the dynamometer 3, so that the cursor on the scale can be connected to the dynamometer 3 through a horizontally arranged connecting rod, thereby simplifying the connection difficulty. On the other hand, when the scale is aligned with the dynamometer 3, it is convenient for the length scale 5 to measure the movement of the dynamometer 3.

[0044] The upper end of the scale is locked on the upper scale pad 10 by an upper bolt. An upper bolt hole adapted to the upper bolt is provided on the upper end of the scale, and the upper bolt hole is an upper long hole extending along the left-right direction, or in other words, along the direction away from or close to the dynamometer 3. The lower end of the scale is locked on the lower scale pad 14 by a lower bolt. A lower bolt hole adapted to the lower bolt is provided on the lower end of the scale, and the lower bolt hole is a lower long hole extending along the left-right direction, or in other words, along the direction away from or close to the dynamometer 3.

[0045] When installing the length scale 5, the position of the length scale 5 can be adjusted left and right to ensure that there is a safe distance between the length scale 5 and the dynamometer 3, while ensuring that the length scale 5 is as close to the dynamometer 3 as possible. After being adjusted in place, the upper and lower ends of the scale are fastened to the upper scale pad 10 and the lower scale pad 14 by upper and lower bolts.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A compression spring force detection device, characterized in that: include: Bottom plate (1); Side panels (2); A positioning column (7), wherein the positioning column (7) is arranged on the bottom plate (1), the positioning column (7) is provided for the compression spring to be tested to be fitted, and the length of the positioning column (7) is less than the length of the compression spring to be tested; A dynamometer (3), the dynamometer (3) comprising a pressure plate (6), the pressure plate (6) being used to contact the top end surface of the compression spring to be measured, the pressure plate (6) being located above the positioning column (7); A cylinder (8), wherein the cylinder (8) is arranged on the side plate (2), a piston of the cylinder (8) is connected to the dynamometer (3), the dynamometer (3) moves up and down with the piston, and a stroke of the piston is a determined stroke; An air-controlled valve is used to control the movement direction of the piston.

2. The compression spring force detection device according to claim 1, characterized in that: The piston passes through the cylinder body of the cylinder (8); a blocking portion is provided on the portion of the piston located above the cylinder body, and the upper end of the cylinder body blocks the blocking portion.

3. The compression spring force detection device according to claim 1, characterized in that: The cylinder body of the cylinder (8) is fastened to the side plate (2) by means of fastening bolts, and the side plate (2) is provided with bolt holes adapted to the fastening bolts, wherein the bolt holes are long holes extending in the up-down direction.

4. The compression spring force detection device according to claim 3, characterized in that: The number of the fastening bolts is two and they are arranged along the elongated hole.

5. The compression spring force detection device according to claim 1, characterized in that: The air-controlled valve is a manual valve (4), and the manual valve (4) comprises a handle. When the handle is turned downward, the manual valve (4) conducts the upper air cavity of the cylinder (8) and the air source; when the handle is turned upward, the manual valve (4) conducts the lower air cavity of the cylinder (8) and the air source.

6. The compression spring force detection device according to claim 1, characterized in that: An upper speed regulating joint (9) and a lower speed regulating joint (13) are provided on the cylinder body of the cylinder (8); the upper air chamber of the cylinder (8) is connected to the air source via the upper speed regulating joint (9), and the lower air chamber of the cylinder (8) is connected to the air source via the lower speed regulating joint (13).

7. The compression spring force detection device according to claim 1, characterized in that: It also includes a length scale (5) arranged on the side plate (2), the length scale (5) including a scale and a cursor slidably mounted on the scale, the scale being arranged up and down, and the cursor being connected to the dynamometer (3) via a connecting rod.

8. The compression spring force detection device according to claim 7, characterized in that: The invention also comprises an upper scale pad (10) and a lower scale pad (14), wherein the upper scale pad (10) and the lower scale pad (14) are both connected to the side plate (2), and the upper scale pad (10) and the lower scale pad (14) both protrude from the side plate (2), and the upper end of the scale is connected to the surface of the upper scale pad (10) away from the side plate (2), and the lower end of the scale is connected to the surface of the lower scale pad (14) away from the side plate (2).

9. The compression spring force detection device according to claim 8, characterized in that: The upper end of the ruler is locked on the upper ruler pad (10) by an upper bolt, and an upper bolt hole adapted to the upper bolt is provided on the upper end of the ruler, and the upper bolt hole is an upper long hole extending in a direction away from or close to the dynamometer (3); The lower end of the scale is locked on the lower scale pad (14) by a lower bolt, and a lower bolt hole adapted to the lower bolt is provided on the lower end of the scale, wherein the lower bolt hole is a lower long hole extending in a direction away from or close to the dynamometer (3).

10. The compression spring force detection device according to claim 1, characterized in that: The piston is connected to a connecting plate (11), a side of the connecting plate (11) facing away from the piston is connected to a conversion plate (12), and a side of the conversion plate (12) facing away from the connecting plate (11) is connected to the dynamometer (3).

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