High temperature resistance testing device for pneumatic valve spring

Abstract

The utility model relates to the technical field of spring testing, in particular to a pneumatic valve spring high-temperature-resistant testing device which comprises a high-temperature cabinet main body, a rotating disc is rotatably arranged at the bottom end in the high-temperature cabinet main body through a rotating driving mechanism, a placing seat is fixed at the top end of the rotating disc, and a plurality of positioning rods are vertically fixed at the top end of the placing seat. A pressing plate is arranged above the placing seat in an up-and-down sliding mode through a linear driving part, a plurality of sliding holes corresponding to the positioning rods one to one are formed in the pressing plate in a penetrating mode, and by arranging the placing seat and the positioning rods, positioning of a plurality of pneumatic valve springs can be achieved; the compression test of the spring can be carried out in the high-temperature cabinet main body, whether the spring is deformed and fractured due to compression in a high-temperature environment is detected, and the detection precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of spring testing, in particular to a high temperature resistance testing device for a pneumatic valve spring. Background Art

[0002] The high temperature resistance test of springs is to evaluate the performance and stability of springs in high temperature environments. This test is usually used to determine whether the spring will deform, relax or lose elasticity under high temperature conditions and whether it can maintain its function and performance.

[0003] In the Chinese Patent Literature Library, patent application number 202323009988.1 discloses a high-temperature cabinet for high-temperature resistance testing of springs, but it can only be used for high-temperature resistance testing of tension springs. The pneumatic valve spring is a compression spring in the pneumatic valve that pushes the internal piston to reset, and cannot meet its testing requirements. Summary of the invention

[0004] The utility model aims to provide a high temperature resistance testing device for a pneumatic valve spring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic valve spring high temperature resistance testing device, comprising a high temperature cabinet body, a rotating disk is arranged at the bottom end inside the high temperature cabinet body through a rotating drive mechanism, and a placement seat is fixed at the top of the rotating disk, a plurality of positioning rods are vertically fixed at the top of the placement seat, a pressure plate is arranged above the placement seat for sliding up and down through a linear drive member, and a plurality of sliding holes corresponding to the positioning rods are penetrated on the pressure plate.

[0006] Furthermore, the pressing plate is rotationally connected to the output end of the linear driving member through a connecting member, a guide rod is vertically fixed at the top edge of the rotating disk, and the pressing plate is slidably connected to the guide rod.

[0007] Furthermore, the connecting member includes a rotating shaft and limit plates respectively arranged at both axial ends of the rotating shaft, the rotating shaft passes through the center of the pressing plate and is rotatably connected to the pressing plate, and the two limit plates are respectively abutted against the upper and lower ends of the pressing plate.

[0008] Furthermore, a positioning groove is provided at the top of the rotating disk, and a positioning protrusion matching the positioning groove is fixed to the bottom end of the placement seat. When the positioning protrusion is inserted into the positioning groove, the positioning rod corresponds to the sliding hole one by one, a limiting bolt is threadedly connected to the guide rod, and a positioning hole matching the limiting bolt is provided at the edge of the placement seat.

[0009] Furthermore, a guide section with a radius gradually decreasing from bottom to top is provided at the top end of the positioning rod.

[0010] Furthermore, the rotation drive mechanism includes a first gear coaxially fixed to the placement seat, a second gear meshing with the first gear, and a motor driving the second gear to rotate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By setting a placement seat and a positioning rod, the positioning of multiple pneumatic valve springs can be achieved. By setting a pressure plate and a linear drive member, a compression test of the spring can be performed inside the high-temperature cabinet body to detect whether the spring will break when compressed in a high-temperature environment.

[0013] By setting a rotating disk and a rotating drive mechanism, the pneumatic valve spring can be driven to rotate inside the high-temperature cabinet body, so that the heating is more uniform, avoiding the impact of uneven temperature at various locations inside the high-temperature cabinet body on the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a partial explosion schematic diagram of the utility model.

[0017] In the figure: 1. high temperature cabinet body; 101. movable door; 102. base; 2. rotating disk; 201. guide rod; 202. positioning groove; 3. rotating drive mechanism; 301. first gear; 302. second gear; 303. motor; 4. placement seat; 401. positioning protrusion; 402. positioning hole; 5. positioning rod; 501. guide section; 6. pressure plate; 601. sliding hole; 7. linear drive member; 8. connecting member; 801. rotating shaft; 802. limit plate; 9. limit bolt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the description of the utility model, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In order to make the terms "including" and any variations of them in the specification and claims of the utility model and the above-mentioned drawings, it is intended to cover non-exclusive inclusions.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected 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 the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 utility model.

[0020] See also Figure 1-3 The utility model provides an embodiment: a high temperature resistance test device for a pneumatic valve spring, comprising a high temperature cabinet body 1, the specific structure of the high temperature cabinet body 1 is the prior art, a movable door 101 that can be opened and closed is installed on its front end surface, a heating element and a temperature sensor for detecting the temperature are installed inside, a rotating disk 2 is arranged at the bottom end of the high temperature cabinet body 1 through a rotating drive mechanism 3, the rotating disk 2 is specifically a circular plate, a rotating shaft is vertically fixed at the center of the bottom end thereof, the rotating shaft can be connected to the high temperature cabinet body 1 through a bearing, a base 102 is fixed at the bottom end of the high temperature cabinet body 1, and the rotating shaft extends It extends into the interior of the base 102 and is connected to the rotation drive mechanism 3. The rotation drive mechanism 3 includes a first gear 301 coaxially fixed to the placement seat 4, a second gear 302 meshing with the first gear 301, and a motor 303 driving the second gear 302 to rotate. The motor 303 is installed at the bottom end of the high-temperature cabinet body 1 through a bracket. When working, the second gear 302 is driven to rotate by the motor 303, and then the first gear 301 is driven to rotate. The first gear 301 drives the rotating disk 2 to rotate. Furthermore, the rotation drive mechanism 3 can also be set as a pulley mechanism, etc.

[0021] A placement seat 4 is fixed at the top of the rotating disk 2. The placement seat 4 is a disc-shaped structure arranged coaxially with the rotating disk 2. A number of positioning rods 5 are vertically fixed to the top of the placement seat 4. During detection, the pneumatic valve spring is sleeved on the outer side of the positioning rod 5. A pressure plate 6 is arranged above the placement seat 4 to slide up and down through a linear drive member 7, and a number of sliding holes 601 corresponding to the positioning rod 5 are penetrated on the pressure plate 6. The linear drive member 7 can be any one of an electric push rod and a cylinder, which is vertically installed at the top of the high-temperature cabinet body 1, and the output end extends to the interior of the high-temperature cabinet body 1. The pressure plate 6 is rotatably connected to the output end of the linear drive member 7 through a connecting member 8. Two guide rods 201 are vertically fixed at the top edge of the rotating disk 2. The pressure plate 6 is slidably connected to the guide rod 201, and the top of the guide rod 201 extends to the top of the pressure plate 6 to fix a limit plate. The connecting member 8 includes a rotating shaft 801 and limit plates 802 respectively arranged at the axial ends of the rotating shaft 801. The rotating shaft 801 passes through the center of the pressure plate 6 and is rotatably connected to the pressure plate 6. The two limit plates 802 respectively abut against the upper and lower ends of the pressure plate 6. Through the extension and retraction of the linear driving member 7, the pressure plate 6 is driven to move up and down, and the spring sleeved on the outside of the positioning rod 5 is compressed downward to detect whether it is deformed and broken when squeezed in a high temperature environment.

[0022] In this embodiment, the placement seat 4 and the rotating disk 2 are detachable and installed, which is convenient for loading and unloading the spring. Specifically, a positioning groove 202 is provided at the top of the rotating disk 2, and a positioning protrusion 401 matching the positioning groove 202 is fixed to the bottom end of the placement seat 4. In this embodiment, the positioning protrusion 401 and the positioning groove 202 are a cross-shaped structure, which plays a positioning role, so that the rotating disk 2 and the placement seat 4 can rotate synchronously. When the positioning protrusion 401 is inserted into the positioning groove 202, the positioning rod 5 corresponds to the sliding hole 601 one by one, and the guide rod 201 is threadedly connected with a limiting bolt 9, and a positioning hole 402 matching the limiting bolt 9 is provided at the edge of the placement seat 4. The limiting bolt 9 is inserted into the interior of the positioning hole 402, which can play a limiting role and prevent the placement seat 4 from axially jumping. In this embodiment, the positioning rod 5 is fixed to the top of the placement seat 4 in a circular array, and there are four positioning holes 402 for easy assembly.

[0023] Furthermore, a guide section 501 with a radius gradually decreasing from bottom to top is provided at the top of the positioning rod 5 , so as to facilitate the positioning rod 5 to be inserted into the sliding hole 601 .

[0024] Furthermore, the pneumatic valve spring high temperature resistance testing device also includes a controller for performing intelligent control.

[0025] Working principle: First, multiple pneumatic valve springs to be tested are sleeved on the positioning rod 5, the placement seat 4 is placed on the top of the rotating disk 2, the positioning protrusion 401 is inserted into the positioning groove 202, and then the limit bolt 9 is rotated to insert it into the positioning hole 402 to fix the placement seat 4, and the movable door 101 is closed. The heating element inside the high-temperature cabinet body 1 is heated to increase the internal temperature of the high-temperature cabinet body 1. The rotating drive mechanism 3 drives the rotating disk 2 and the placement seat 4 to rotate synchronously, so that the spring is heated evenly, and then the linear drive member 7 is extended to push the pressure plate 6 to slide downward along the length direction of the guide rod 201. The positioning rod 5 passes through the sliding hole 601, and the pressure plate 6 compresses the spring downward to detect whether the spring will be deformed and broken when squeezed in a high-temperature environment.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high temperature resistance test device for a pneumatic valve spring, comprising a high temperature cabinet body (1), characterized in that: A rotating disk (2) is rotatably arranged at the bottom of the high-temperature cabinet body (1) via a rotating drive mechanism (3), and a placement seat (4) is fixed at the top of the rotating disk (2), a plurality of positioning rods (5) are vertically fixed at the top of the placement seat (4), and a pressure plate (6) is arranged above the placement seat (4) to slide up and down via a linear drive member (7), and a plurality of sliding holes (601) corresponding to the positioning rods (5) are penetrated through the pressure plate (6).

2. The high temperature resistance testing device for pneumatic valve springs according to claim 1, characterized in that: The pressing plate (6) is rotatably connected to the output end of the linear drive member (7) via a connecting member (8); a guide rod (201) is vertically fixed at the top edge of the rotating disk (2); and the pressing plate (6) is slidably connected to the guide rod (201).

3. The high temperature resistance testing device for pneumatic valve springs according to claim 2, characterized in that: The connecting member (8) comprises a rotating shaft (801) and limiting plates (802) respectively arranged at two axial ends of the rotating shaft (801); the rotating shaft (801) passes through the center of the pressing plate (6) and is rotatably connected to the pressing plate (6); the two limiting plates (802) respectively abut against the upper and lower ends of the pressing plate (6).

4. The high temperature resistance testing device for pneumatic valve springs according to claim 2, characterized in that: The top end of the rotating disk (2) is provided with a positioning groove (202), and the bottom end of the placement seat (4) is fixed with a positioning protrusion (401) that matches the positioning groove (202). When the positioning protrusion (401) is inserted into the positioning groove (202), the positioning rod (5) corresponds to the sliding hole (601) one by one. The guide rod (201) is threadedly connected with a limiting bolt (9), and a positioning hole (402) that matches the limiting bolt (9) is provided at the edge of the placement seat (4).

5. The high temperature resistance testing device for pneumatic valve springs according to claim 1, characterized in that: The top end of the positioning rod (5) is provided with a guide section (501) whose radius gradually decreases from bottom to top.

6. The high temperature resistance testing device for pneumatic valve springs according to claim 1, characterized in that: The rotation drive mechanism (3) comprises a first gear (301) coaxially fixed to the placement seat (4), a second gear (302) meshing with the first gear (301), and a motor (303) driving the second gear (302) to rotate.

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