Pin puller function test clamp with self-locking function
By designing a pin puller function test fixture that utilizes the self-locking structure of the main body and the top rod, the pin puller is solved, and the problem of unsolid fixing and cumbersome assembly is achieved, and the efficient and reliable self-locking effect is suitable for a variety of fires Working device.
Patent Information
- Application Number
- CN202323431847.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-15
AI Technical Summary
During the test of existing pin puller functions, the fixing device is prone to distortion due to vibration and impact, and the commonly used screw connection method may fail under high vibration conditions, and assembly and disassembly are cumbersome, which affects the testing efficiency.
A pin puller function test fixture with self-locking function was designed. Using the structural characteristics of the body and the pin rod, the pin rod is inserted horizontally into the hole of the body through the pin rod, and the ear-like structure is used to achieve self-locking, avoiding screw connections and simplifying The loading and unloading process.
It realizes the reliability of self-locking and the compactness of the structure, improves loading and unloading speed and strength, avoids the problem of insolid screw connection, and is suitable for other fire operating devices.
Smart Images
Figure CN222244381U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of pyrotechnics testing, and in particular relates to a pin puller function testing fixture with a self-locking function. Background Art
[0002] As a fire-operated device, the pin puller is required to be fixed and all six degrees of freedom of the pin puller are locked during its functional test. Since the fire-operated device will generate large vibration and impact during operation, the fixation must be reliable, otherwise the test results will be distorted.
[0003] At the same time, due to functional requirements, a radial load needs to be applied to the pin puller piston 4.
[0004] The means of fixing can be designed according to the structure of the pin puller. Common measures include: 1) using the holes on the external structure of the pin puller and fixing it to the tooling with screws (or bolts) through holes; 2) using the tooling to press and fix the pin puller as a whole, and then connecting and fixing the tooling to other tooling with screws (or bolts).
[0005] Both of the above measures require the use of screws (or bolts) for connection. If the vibration and impact of the pin puller are too large, the screws (or bolts) may be broken, causing the entire test fixture to be scrapped. In addition, the repeated removal of screws (or bolts) is cumbersome and inefficient. Utility Model Content
[0006] The utility model provides a pin puller function test fixture with a self-locking function, which is used for the pin puller function test.
[0007] In order to solve the above technical problems, the utility model provides a pin puller functional test fixture with a self-locking function, which is characterized by: comprising a main body and a push rod; the push rod is horizontally inserted into the corresponding hole in the lower part of the main body, and the radial through hole at the end of the push rod is aligned with the vertical through hole at the bottom of the main body; the side wall of the main body is provided with a groove for accommodating the pin puller, and a horizontal small groove with an ear-shaped structure for accommodating the pin puller is provided on the main body on one side of the groove.
[0008] Beneficial effects:
[0009] (1) The pin puller function test fixture designed by the utility model cleverly utilizes the structural characteristics of the pin puller 1, and does not need to be connected by screws (or bolts), only the body 2 is needed, and self-locking is achieved. The structure is simple and the self-locking is reliable.
[0010] (2) The utility model overcomes the shortcomings of screw (or bolt) connection mode, which is complicated to assemble and unstable. It has fast assembly and disassembly speed, compact structure and high strength.
[0011] (3) A structure for accommodating the push rod 3 is designed on the body 2, so that radial force can be applied to the piston 4 of the pin puller 1. At the same time, the push rod 3 is also reliably locked, and there is no need to design a separate restraining structure.
[0012] (4) The utility model makes full use of the structural characteristics of the pin puller to achieve self-locking, and can be applied to other fire-operated actuating devices such as pin pullers and pushers. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is the main view of the functional test fixture
[0014] Figure 2 This is the top view of the functional test fixture
[0015] Figure 3 Is the axonometric view of the functional test fixture
[0016] Figure 4 This is the main view of the pin puller structure
[0017] Figure 5 This is the left view of the pin puller structure
[0018] Figure 6 The main structure view
[0019] Figure 7 The main structure top view
[0020] Figure 8 yes Figure 7 AA and CC cross-sectional views
[0021] Fig. 9 yes Figure 7 BB cross-section view
[0022] Fig.10 This is the main structure axonometric view
[0023] Fig.11 It is a schematic diagram of the top rod structure. DETAILED DESCRIPTION
[0024] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.
[0025] The utility model provides a pin puller function test fixture with a self-locking function, comprising a main body 2 and a push rod 3, which is connected with a pin puller 1 for use.
[0026] The push rod 3 is horizontally inserted into the corresponding hole 7 at the bottom of the body 2, and the radial through hole at the end of the push rod 3 is aligned with the vertical through hole 9 at the bottom of the body 2; the side wall of the body 2 is provided with a slot 8, and the two ear-shaped structures 5 of the pin puller 1 are aligned with the slot 8 on the side wall of the body 2, and the piston 4 of the pin puller 1 is inserted into the vertical through hole 9 of the body 2, and the position of the push rod 3 is adjusted in real time so that the piston 4 of the pin puller 1 is inserted into the radial through hole of the push rod 3; the pin puller 1 continues to move downward, and when the end face of the pin puller 1 hits the corresponding plane of the body 2, the pin puller 1 is rotated so that the ear-shaped structure 5 enters the two horizontal small grooves 6 of the body 2, and the connection is completed after it is rotated into place. At this time, the pin puller 1, the body 2, and the push rod 3 are connected as a whole, and the three parts are locked with each other.
[0027] After the functional test is completed, the piston 4 of the pin puller 1 is retracted, and the push rod 3 is free from restraint, and the push rod 3 can be removed at this time. Then the pin puller 1 is rotated to make its two ear-shaped structures 5 disengage from the two small grooves 6 on the body 2, and align the body 2 slots 8 again. At this time, the two ear-shaped structures 5 of the pin puller 1 are free from restraint, and the pin puller 1 can be removed upwards at this time.
[0028] The utility model has a simple structure and makes full use of the structural characteristics of the pin puller 1. It does not need to be fixed with screws, but only needs a body 2, which locks the five degrees of freedom of the pin puller 1, and only one degree of freedom of axial rotation is not constrained. Since the pin puller is in a static state during the functional test and is not subject to other external forces, and the working duration of the pin puller 1 is only μm level, the axial direction will not rotate. Therefore, the clamp can achieve full self-locking.
[0029] When the utility model is used, the pin puller 1, the body 2 and the push rod 3 connected together only need to be placed on a general tool such as a vise, one end of the plane of the body 2 is close to one side of the vise, and the one side of the vise is forced along the axial direction of the push rod, without other tooling or clamps.
[0030] In order to reduce the deformation of the contact parts between the main body 2, the push rod 3 and the pin puller 1, and at the same time reduce the friction between the push rod 3 and the piston 4 of the pin puller 1 due to the movement of the piston 4, the main body 2 and the push rod 3 are made of tool steel Cr12, and the hardness after heat treatment is ≥60HRC.
Claims
1. A pin puller functional test fixture with self-locking function, characterized in that: It includes a main body and a push rod; the push rod is horizontally inserted into the corresponding hole at the lower part of the main body, and the radial through hole at the end of the push rod is aligned with the vertical through hole at the bottom of the main body; the side wall of the main body is provided with a groove for accommodating a pin puller, and a horizontal small groove with an ear-shaped structure for accommodating the pin puller is provided on the main body on one side of the groove.
2. A pin puller function test fixture with self-locking function according to claim 1, characterized in that: The piston of the pin puller passes through the vertical through hole of the push rod and is inserted into the radial through hole of the push rod.
3. A pin puller function test fixture with self-locking function according to claim 1, characterized in that: After the step surface at the lower part of the pin puller hits the corresponding plane of the main body, rotate the pin puller so that its ear-shaped structure enters the two horizontal small grooves of the main body, and the connection is completed after it is rotated into place.
4. A pin puller function test fixture with self-locking function according to claim 1, characterized in that: The body and ejector rod are made of tool steel Cr12.