Tool for detecting verticality of spring in stress state

Abstract

The utility model relates to a tool for detecting the verticality of a spring in a stressed state, which comprises a bottom support plate supported at the lower end of the spring, a pressure seat arranged at the upper end of the spring and a pressure head positioned above the pressure seat, the pressure head comprises a horizontal pressure head plate and a pressure head rod fixedly connected at the lower end of the pressure head plate, the lower end of the pressure head rod is spherical, and the pressure head plate is provided with a spherical surface. A spherical counter bore matched with the lower end of the pressing head rod is formed in the upper end of the pressing base, the length of the pressing head rod is larger than the depth of the spherical counter bore, the pressing base comprises an upper pressing base plate attached to the upper end face of the spring and a first protrusion fixedly connected to the lower end of the upper pressing base plate, and the diameter of the first protrusion is matched with the inner diameter of the spring. According to the utility model, the pressure head deflects in the pressure seat, so that the verticality of the spring is reflected through the deflection amount, the verticality detection of the spring in a stressed state is obtained, and the spring with poor stability can be identified in advance.

Description

Technical Field

[0001] The utility model relates to the technical field of spring detection, in particular to a tool for detecting the verticality of a spring under a stress state. Background Art

[0002] At present, the verticality test of the opening and closing spring of the spring operating mechanism is carried out when the spring is in a free state without any force. Usually, the verticality test in the free state is achieved through tools. However, the spring is under pressure in actual working conditions. The verticality in the free state cannot fully reflect its verticality in the compressed state. Many springs will tilt and bend during the compression process. Therefore, the verticality test of the spring under pressure is extremely important. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a tool for detecting the verticality of a spring under a stress state.

[0004] The utility model is realized through the following technical scheme, which provides a tool for detecting the verticality of a spring under a stress state, including a bottom support plate supported on the lower end of the spring, a pressure seat installed on the upper end of the spring and a pressure head located above the pressure seat, the pressure head including a horizontal pressure head plate and a pressure head rod fixedly connected to the lower end of the pressure head plate, the lower end of the pressure head rod is spherical, the upper end of the pressure seat is provided with a spherical countersunk hole adapted to the lower end of the pressure head rod, and the length of the pressure head rod is greater than the depth of the spherical countersunk hole.

[0005] In this scheme, the spring is placed vertically on the bottom support plate, the pressure seat is inserted into the upper end of the spring, a small amount of grease is applied to the lower end of the pressure head rod and then installed into the spherical countersunk hole; downward pressure is applied to the pressure head, and when the deformation of the compressed end face of the spring is inconsistent, the pressure head deflects in the pressure seat, thereby reflecting the verticality of the spring through the deflection amount.

[0006] As an optimization, the spherical counterbore includes a conical section at the upper end and a spherical section at the lower end, and the radius of the spherical section is equal to the radius of the lower end of the pressure head rod. The conical section provided in this solution facilitates the deflection of the pressure head rod in the spherical counterbore.

[0007] As an optimization, the upper end surface of the bottom support plate is fixedly connected with a bottom plate center tube into which the spring is inserted, thereby positioning the spring and facilitating the spring to be placed at the center of the bottom support plate.

[0008] As an optimization, the length of the pressure head rod is 1.05-1.2 times the depth of the spherical countersunk hole, so as to facilitate the observation of the deflection degree and prevent accidents caused by excessive deflection of the spring.

[0009] As an optimization, the pressure seat includes an upper pressure seat plate attached to the upper end surface of the spring and a first protrusion fixed to the lower end of the upper pressure seat plate, wherein the diameter of the first protrusion is adapted to the inner diameter of the spring. The first protrusion is inserted into the inner hole of the spring to clamp the pressure seat to the upper end of the spring.

[0010] As an optimization, a second protrusion is fixedly connected to the lower end of the first protrusion, and the diameter of the second protrusion is smaller than the diameter of the first protrusion. The second protrusion in this solution increases the length of the inserted spring, and is used to cooperate with the center tube of the bottom plate to limit the downward pressure distance. At the same time, the second protrusion can be used to adapt to springs with smaller inner diameters.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a tool for detecting the verticality of a spring under a stress state, wherein the pressure head deflects in a pressure seat, thereby reflecting the verticality of the spring through the deflection amount, thereby obtaining the verticality detection of the spring under a stress state, which is convenient for improving the working stability of the spring operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the pressure head and the pressure seat of the utility model in a deflected state;

[0014] Figure 3 It is a cross-sectional view of the bottom support plate of the utility model;

[0015] As shown in the figure:

[0016] 1. Press head, 2. Press seat, 3. Spring, 4. Bottom support plate, 5. Press plate, 11. Press head rod, 12. Press head plate, 21. Upper press seat plate, 22. First protrusion, 23. Second protrusion, 24. Spherical countersunk hole, 41. Bottom plate center tube. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figures 1 to 3 As shown, the utility model is a tool for detecting the verticality of a spring under stress, comprising a bottom support plate 4 supported on the lower end of a spring 3, a pressure seat 2 installed on the upper end of the spring 3, and a pressure head 1 located above the pressure seat 2, wherein the spring 3 is a workpiece to be detected.

[0019] The bottom support plate 4 is a horizontal steel plate, and a bottom plate center tube 41 inserted into the spring 3 is fixedly connected to the upper end surface of the bottom support plate 4. The bottom plate center tube 41 is vertically welded at the center of the bottom support plate 4, and the diameter of the bottom plate center tube 41 is smaller than the inner diameter of the spring 3.

[0020] The pressure head 1 includes a horizontal pressure head plate 12 and a pressure head rod 11 fixed to the lower end of the pressure head plate 12. The pressure head plate 12 is a horizontally arranged circular plate. The pressure head rod 11 is welded at the center position of the pressure head plate 12. The pressure head rod 11 is a metal round rod. The lower end of the pressure head rod 11 is spherical, and the radius of the sphere is equal to the radius of the pressure head rod 11.

[0021] The pressure seat 2 is fixed to the upper end of the spring 3, and a spherical countersunk hole 24 is opened on the upper end of the pressure seat 2 to match the lower end of the pressure head rod 11. The spherical countersunk hole 24 includes a conical section at the upper end and a spherical section at the lower end. The radius of the spherical section is equal to the radius of the sphere at the lower end of the pressure head rod 11.

[0022] The length of the pressure head rod 11 is greater than the depth of the spherical countersunk hole 24. In this embodiment, the length of the pressure head rod 11 is 1.05-1.2 times the depth of the spherical countersunk hole 24.

[0023] The pressure seat 2 includes an upper pressure seat plate 21 attached to the upper end surface of the spring 3 and a first protrusion 22 fixed to the lower end of the upper pressure seat plate 21. The upper pressure seat plate 21 is a circular plate with a diameter greater than the outer diameter of the spring 3. The diameter of the first protrusion 22 is adapted to the inner diameter of the spring 3. Specifically, the diameter of the first protrusion 22 is slightly smaller than the inner diameter of the spring 3.

[0024] A second protrusion 23 is fixedly connected to the lower end of the first protrusion 22 . The diameter of the second protrusion 23 is smaller than that of the first protrusion 22 .

[0025] The upper pressing seat plate 21, the first protrusion 22 and the second protrusion 23 are an integrated metal part.

[0026] The use of the utility model:

[0027] When in use, place the bottom support plate 4 on the support platform of the press, place the spring 3 vertically on the bottom support plate 4, insert the pressure seat 2 into the upper end of the spring, apply a little grease to the lower end of the pressure head rod 11 and then install it into the spherical countersunk hole 24; after the press plate 5 is pressed down, it contacts the pressure head 1 to apply pressure. When the deformation of the pressed end face of the spring 3 is inconsistent, the pressure head 1 deflects in the pressure seat 2, thereby reflecting the verticality of the spring through the deflection amount. When the limit value is reached, the large end face of the pressure head contacts the large end face of the pressure seat.

[0028] By reasonably designing the outer diameter of the pressure head end face, the deformation difference of the spring end face can be qualitatively detected.

[0029] After the lower end of the second protrusion 23 contacts the bottom plate center tube 41, the downward pressure can be limited to prevent the spring from being damaged due to excessive downward pressure.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A tool for detecting the verticality of a spring under stress, characterized by: The invention comprises a bottom support plate (4) supported on the lower end of a spring (3), a pressure seat (2) mounted on the upper end of the spring (3), and a pressure head (1) located above the pressure seat (2); the pressure head (1) comprises a horizontal pressure head plate (12) and a pressure head rod (11) fixed to the lower end of the pressure head plate (12); the lower end of the pressure head rod (11) is spherical; the upper end of the pressure seat (2) is provided with a spherical countersunk hole (24) adapted to the lower end of the pressure head rod (11); the length of the pressure head rod (11) is greater than the depth of the spherical countersunk hole (24).

2. A tool for detecting verticality of a spring under stress according to claim 1, characterized in that: The spherical countersunk hole (24) comprises a conical section at an upper end and a spherical section at a lower end, and the radius of the spherical section is equal to the radius of the lower end of the pressure head rod (11).

3. A tool for detecting verticality of a spring under stress according to claim 1, characterized in that: The upper end surface of the bottom support plate (4) is fixedly connected with a bottom plate central tube (41) into which the spring (3) is inserted.

4. A tool for detecting verticality of a spring under stress according to claim 1, characterized in that: The length of the pressure head rod (11) is 1.05-1.2 times the depth of the spherical countersunk hole (24).

5. The tool for detecting verticality of a spring under stress according to claim 3, characterized in that: The pressure seat (2) comprises an upper pressure seat plate (21) fitted on the upper end surface of the spring (3) and a first protrusion (22) fixed to the lower end of the upper pressure seat plate (21), wherein the diameter of the first protrusion (22) is adapted to the inner diameter of the spring (3).

6. A tool for detecting verticality of a spring under stress according to claim 5, characterized in that: A second protrusion (23) is fixedly connected to the lower end of the first protrusion (22), and the diameter of the second protrusion (23) is smaller than the diameter of the first protrusion (22).

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