Quickly rising and falling ejector pin

Abstract

The utility model belongs to the field of engineering machinery relates to a kind of quick lifting thimble, including thimble, thimble connecting sleeve, thimble guide cylinder and stopper, wherein one end of the thimble is threadedly connected with the thimble connecting sleeve, the thimble connecting sleeve is axially slidably installed in the thimble guide cylinder, and limiting rack along axial arrangement is equipped on the thimble connecting sleeve;Opening is equipped on the side of the thimble guide cylinder close to the limiting rack, and movable stopper is arranged at the opening, and the stopper can be clamped in the limiting rack by moving position, or separated from the limiting rack, to limit the axial movement of the thimble connecting sleeve, or make the thimble connecting sleeve freely axially move.The utility model ingeniously converts the ineffective stroke of thimble into quick lifting action, combined with gravity falling mechanism, simplifies the spin-in spin-out process of traditional thimble.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery and relates to a rapidly lifting and lowering ejector pin. Background Technology

[0002] In the field of water drilling, securing the water drill is a crucial step in ensuring accuracy and safety. Currently, the most common method for stabilizing water drills is to use a center pin to tighten the support. In practice, the worker rotates the center pin, utilizing the threaded engagement between the center pin and related components (center pin connecting sleeve) to move the center pin upwards until it tightens the support, thus providing stable support for the water drill.

[0003] However, this traditional method of tightening with a ejector pin has significant drawbacks. In actual operation, the worker needs to continuously rotate the ejector pin. Due to the characteristics of the thread, the ejector pin rises slowly, resulting in a lengthy tightening process. Moreover, to achieve effective tightening, the worker must keep their hand raised and apply considerable force for an extended period while rotating the ejector pin. This method of applying force not only consumes a great deal of the worker's physical strength, easily causing fatigue and reducing work efficiency, but also increases the risk of occupational injuries such as muscle strain due to the worker maintaining the same posture for a long time.

[0004] With the widespread application of water drilling in various industries, construction tasks are becoming increasingly heavy, and the requirements for construction efficiency and quality are constantly increasing. The existing pin tightening method can no longer meet the needs of actual construction, and its time-consuming and labor-intensive disadvantages are becoming more and more prominent, becoming an important factor restricting the improvement of water drilling efficiency.

[0005] Therefore, developing a device capable of rapid lifting and lowering of the ejector pin to optimize the ejector pin tightening process has become an urgent problem to be solved in the field of water drilling. This application addresses this issue by designing a rapidly lifting and lowering ejector pin. Through improvements to the ejector pin lifting mechanism, the time spent in the tightening process is greatly reduced, achieving rapid and efficient lifting and lowering of the ejector pin. This effectively improves the work efficiency of water drilling while reducing manpower consumption and lowering the labor intensity of workers, resulting in significant economic and social benefits. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a fast-lifting ejector pin, so as to realize the rapid lifting and lowering of the ejector pin and save the time consumed in the tightening process.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A fast-lifting ejector pin includes an ejector pin, an ejector pin connecting sleeve, an ejector pin guide cylinder, and a stop block, wherein one end of the ejector pin is threadedly connected to the ejector pin connecting sleeve, the ejector pin connecting sleeve is axially slidably installed in the ejector pin guide cylinder, and a limiting rack is provided on the ejector pin connecting sleeve arranged axially.

[0009] An opening is provided on the side of the ejector guide cylinder near the limiting rack, and a stop block is provided at the opening. The stop block can be moved to be engaged in the limiting rack or disengaged from the limiting rack, thereby restricting the axial movement of the ejector connecting sleeve or allowing the ejector connecting sleeve to move freely axially.

[0010] Furthermore, the stop block is slidably installed at the opening along the radial direction of the ejector pin guide cylinder, and can be engaged in the limiting rack or disengaged from the limiting rack by moving in the radial direction.

[0011] Furthermore, a stop guide cylinder is provided at the opening, and a strip hole matching the stop is provided on the stop guide cylinder, so that the stop can slide along the radial direction of the ejector pin guide cylinder through the strip hole.

[0012] Furthermore, an elastic element is provided in the stop block guide cylinder to provide a thrust to the stop block toward the limiting rack.

[0013] Furthermore, the elastic element is a spring.

[0014] Furthermore, the tooth profile of the limiting rack is an oblique tooth facing away from the ejector pin.

[0015] Furthermore, the stop is a pin.

[0016] Furthermore, the stop block is slidably installed at the opening along the axial direction of the stop block, and can be engaged in or disengaged from the limiting rack by moving along the axial direction of the stop block.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model provides a rapid lifting and lowering ejector pin device, mainly including an ejector pin, an ejector pin connecting sleeve, an ejector pin guide cylinder, and a stop block. The ejector pin and the ejector pin connecting sleeve are threaded together, and the ejector pin connecting sleeve is axially slidably installed in the ejector pin guide cylinder and is provided with a limiting rack arranged axially. The stop block is movably arranged at the opening of the ejector pin guide cylinder, and can be moved to engage or disengage from the limiting rack to achieve axial limiting or free movement of the ejector pin connecting sleeve. This design cleverly transforms the ineffective stroke of the ejector pin into a rapid lifting action, combined with a gravity-based descent mechanism, simplifying the traditional ejector pin screwing-in and screwing-out process.

[0019] This invention significantly improves operational efficiency. During tightening, after disengaging the stop block, quickly pull the ejector pin connecting sleeve upwards to the appropriate position, then disengage the stop block to secure it. Only minor adjustments to the ejector pin are needed to complete the tightening process. During release, disengaging the stop block allows the connecting sleeve to fall naturally, achieving instant release. This mechanism reduces the ejector pin lifting time to a fraction of that of traditional methods, making it particularly suitable for machining or positioning scenarios requiring frequent adjustments, avoiding fatigue and inefficiency caused by prolonged manual rotation.

[0020] Furthermore, by incorporating elastic elements such as springs within the stop guide cylinder, and with an optional arc-shaped notch design, the stop is stably engaged, preventing it from being forced open and causing failure, thus improving the reliability and safety of the device. The overall structure is compact, easy to manufacture and maintain, and suitable for vibration or high-frequency operating environments, expanding its application range while reducing costs.

[0021] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a rapidly rising and falling ejector pin in one embodiment.

[0024] Reference numerals: 1. Ejector pin; 2. Ejector pin connecting sleeve; 21. Limiting rack; 3. Stop block guide cylinder; 4. Spring; 5. Stop block; 6. Ejector pin guide cylinder. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] Example 1

[0029] This embodiment provides a rapidly rising and falling ejector pin, such as... Figure 1 As shown, the assembly includes a ejector pin 1, an ejector pin connecting sleeve 2, an ejector pin guide cylinder 6, and a stop block 5. One end of the ejector pin 1 is threadedly connected to the ejector pin connecting sleeve 2, allowing the ejector pin 1 to be rotated relative to the ejector pin connecting sleeve 2. The ejector pin connecting sleeve 2 is axially slidably mounted in the ejector pin guide cylinder 6, and has an axially arranged limiting rack 21. The teeth of the limiting rack 21 are preferably inclined teeth facing away from the ejector pin 1, facilitating a one-way limiting effect when the stop block 5 is engaged.

[0030] Preferably, in this embodiment, the stop 5 is a pin. Using a simple and easy-to-manufacture structure like a pin can reduce the overall manufacturing cost.

[0031] An opening is provided on the side of the ejector guide cylinder 6 near the limiting rack 21, and a movable stop 5 is provided at this opening. Specifically, the stop 5 is slidably installed at the opening along the radial direction of the ejector guide cylinder 6, and can be engaged in or disengaged from the limiting rack 21 by moving in the radial direction, thereby restricting the axial movement of the ejector connecting sleeve 2, or allowing the ejector connecting sleeve 2 to move freely in the axial direction. In order to guide the sliding of the stop 5, a stop guide cylinder 3 is provided at the opening, and a strip hole matching the stop 5 is provided on the stop guide cylinder 3, so that the stop 5 can slide along the radial direction of the ejector guide cylinder 6 through the strip hole. In addition, an elastic element is provided in the stop guide cylinder 3 to provide a thrust to the stop 5 toward the limiting rack 21. This elastic element is specifically a spring 4, one end of which is fixed to the inner wall of the stop guide cylinder 3, and the other end is connected to the stop 5, ensuring that the stop 5 automatically engages in the limiting rack 21 without external force.

[0032] The working principle of this rapid-lifting ejector pin is as follows: When tightening is required, first, the stop block 5 is disengaged from the limiting rack 21. Then, the ejector pin connecting sleeve 2 is quickly pulled upwards. When pulled to the appropriate position, the stop block 5 is released. At this time, under the influence of the spring 4, the stop block 5 automatically engages with the limiting rack 21, completing the fixation of the ejector pin connecting sleeve 2. Subsequently, the ejector pin 1 is rotated to fine-tighten through the threaded connection between the ejector pin 1 and the ejector pin connecting sleeve 2. This process converts most of the ineffective stroke of the ejector pin 1 into the pulling of the ejector pin connecting sleeve 2, and finally fine-tunes through the rotation of the threaded connection, greatly improving the efficiency of upward tightening. When it is necessary to release the tightened state, the stop block 5 is disengaged from the limiting rack 21. At this time, under the influence of gravity, the ejector pin connecting sleeve 2 naturally falls, quickly completing the release from the tightened state. To prevent the stop block 5 from being squeezed open and causing the device to fail, the spring 4 provides continuous thrust to ensure that the stop block 5 is stably engaged.

[0033] The quick-lifting ejector pin of this embodiment has a simple structure and is easy to operate. It is suitable for various mechanical positioning applications. Through the quick-lifting and natural falling mechanism, the lifting time of the ejector pin is greatly shortened, and the work efficiency is improved.

[0034] Example 2

[0035] This embodiment improves upon embodiment 1, providing another type of rapidly lifting ejector pin, including an ejector pin 1, an ejector pin connecting sleeve 2, an ejector pin guide cylinder 6, and a stop block 5. One end of the ejector pin 1 is threadedly connected to the ejector pin connecting sleeve 2. The ejector pin connecting sleeve 2 is axially slidably mounted in the ejector pin guide cylinder 6, and the ejector pin connecting sleeve 2 is provided with an axially arranged limiting rack 21. The teeth of the limiting rack 21 are oblique teeth facing away from the ejector pin 1.

[0036] An opening is provided on the side of the ejector guide cylinder 6 near the limiting rack 21, and a movable stop 5 is provided at this opening. Specifically, the stop 5 is slidably installed at the opening along the radial direction of the ejector guide cylinder 6, and can be engaged in or disengaged from the limiting rack 21 by moving in the radial direction. A stop guide cylinder 3 is provided at the opening, and a strip-shaped hole matching the stop 5 is provided on the stop guide cylinder 3, so that the stop 5 can slide along the radial direction of the ejector guide cylinder 6 through the strip-shaped hole. An elastic element, namely a spring 4, is also provided in the stop guide cylinder 3 to provide a thrust to the stop 5 toward the limiting rack 21. One end is fixed to the inner wall of the stop guide cylinder 3, and the other end is connected to the stop 5.

[0037] The working principle of this rapid-lifting ejector pin is as follows: When tightening is required, the stop block 5 is disengaged from the limiting rack 21, and then the ejector pin connecting sleeve 2 is quickly pulled upwards. After reaching the appropriate position, the stop block 5 is released, and the stop block 5 is engaged in the limiting rack 21 under the pushing force of the spring 4. Subsequently, the ejector pin 1 is rotated to tighten. This process efficiently converts ineffective strokes and increases the tightening speed. When disengagement is required, the stop block 5 is disengaged, and the ejector pin connecting sleeve 2 falls under gravity, quickly disengaging.

[0038] In this embodiment, the spring 4 ensures that the stop block 5 will not be easily squeezed open when subjected to force, preventing device failure and further enhancing the device's anti-drop performance. It is suitable for vibration environments or high-frequency operation occasions, making operation safer and more reliable. The structure is compact and easy to manufacture and maintain.

[0039] Example 3

[0040] The difference between this embodiment and embodiment 1 is that in this embodiment, the stop block 5 is slidably installed at the opening along the axial direction of the stop block 5, and can be engaged in or disengaged from the limiting rack 21 by moving along the axial direction.

[0041] Specifically, in this embodiment, the opening can be configured as a through hole or notch on the side of the ejector guide cylinder 6 near the limiting rack 21, and the stop block 5 can be connected to or disconnected from the limiting rack 21 by moving and inserting along its axial direction.

[0042] When the ejector pin connecting sleeve 2 needs to move axially, the stop block 5 is pulled out; after the ejector pin connecting sleeve 2 has moved axially, the stop block 5 is inserted into the opening and locked in the limiting rack 21 to achieve axial limiting of the ejector pin connecting sleeve 2; specifically, the stop block 5 can be set as a toothed block or prism that matches the toothed notch in the limiting rack 21.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rapidly rising and falling ejector pin, characterized in that: It includes a ejector pin, an ejector pin connecting sleeve, an ejector pin guide cylinder, and a stop block, wherein one end of the ejector pin is threadedly connected to the ejector pin connecting sleeve, the ejector pin connecting sleeve is axially slidably installed in the ejector pin guide cylinder, and a limiting rack is provided on the ejector pin connecting sleeve arranged axially. An opening is provided on the side of the ejector guide cylinder near the limiting rack, and a stop block is provided at the opening. The stop block can be moved to be engaged in the limiting rack or disengaged from the limiting rack, thereby restricting the axial movement of the ejector connecting sleeve or allowing the ejector connecting sleeve to move freely axially.

2. The rapidly lifting and lowering ejector pin according to claim 1, characterized in that: The stop block is slidably installed at the opening along the radial direction of the ejector pin guide cylinder, and can be engaged in the limiting rack or disengaged from the limiting rack by moving in the radial direction.

3. The rapidly rising and falling ejector pin according to claim 2, characterized in that: A stop guide cylinder is provided at the opening, and a strip hole matching the stop is provided on the stop guide cylinder, so that the stop can slide along the radial direction of the ejector pin guide cylinder through the strip hole.

4. The rapidly rising and falling ejector pin according to claim 3, characterized in that: An elastic element is also provided in the guide cylinder of the stop block for providing a thrust toward the limiting rack to the stop block.

5. The rapidly lifting and lowering ejector pin according to claim 4, characterized in that: The elastic element is a spring.

6. The rapidly rising and falling ejector pin according to claim 3, characterized in that: The teeth of the limiting rack are oblique teeth facing away from the ejector pin.

7. The rapidly lifting and lowering ejector pin according to claim 1, characterized in that: The stop is a pin.

8. The rapidly rising and falling ejector pin according to claim 1, characterized in that: The stop block is slidably installed at the opening along the axial direction of the stop block, and can be engaged in or disengaged from the limiting rack by moving along the axial direction of the stop block.

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