Large impactor piston hoisting tool

Abstract

The utility model provides a hoisting tool for a piston of a large impactor. The hoisting tool comprises a hoisting rod, a spring, an upper positioning piece and a lower positioning piece, the hanging rod is sleeved with the upper positioning piece, the hanging rod above the upper positioning piece is sleeved with the spring, and the lower end of the spring abuts against the upper end of the upper positioning piece; a rotating shaft is horizontally arranged at the lower end of the hanging rod, a lower positioning piece capable of vertically penetrating through a piston air hole is arranged on the rotating shaft, and the lower positioning piece can rotate around the axis of the rotating shaft and can be horizontally unfolded after penetrating through the piston air hole. The lower positioning piece is vertically aligned with and penetrates through a piston air hole after rotating through the rotating shaft, then is horizontally unfolded to provide stable support for the piston, and is matched with the elastic force action of the upper positioning piece and the spring, so that stable clamping of the large impactor piston in the hoisting process is ensured, the inner wall of the piston is effectively prevented from being damaged by the hoisting tool, and the hoisting efficiency is improved. And the precision and the integrity of the piston are ensured.

Description

Technical Field

[0001] The utility model relates to the field of impactor manufacturing, in particular to a large-scale impactor piston hoisting tool. Background Art

[0002] The impactor, also known as an impact hammer, is a basic equipment required for drilling projects. The piston of the impactor works under repeated action of large impact force and contact fatigue for a long time. The piston is the heart of the down-the-hole impactor and is a very demanding part. It plays the role of converting and transmitting energy in the impactor. When assembling the existing impactor, the piston needs to be hoisted by a crane, and the outer wall of the piston rod is smooth, which is not convenient for hoisting, greatly affecting the assembly efficiency.

[0003] The prior art CN202011622459.7 discloses an auxiliary installation device for the impactor piston, including an expansion sleeve and a pulling assembly, wherein the pulling assembly includes a pull rod, wherein the expansion sleeve is mounted on the outer wall of the pull rod, and the pull rod can move up and down along the axial direction of the piston, so that the expansion sleeve has: a first state in which the outer diameter of the expansion sleeve is enlarged and tightly matched with the inner diameter of the piston, and a second state in which the outer diameter of the expansion sleeve is reduced and separated from the piston. Although the invention fixes the piston by means of an expansion sleeve, the following problems still exist:

[0004] 1. Due to the heavy weight of the piston, the expansion sleeve may over-expand during the expansion process due to the excessive gravity load. Excessive expansion may cause the expansion sleeve material to exceed its elastic limit, causing plastic deformation or even rupture, which not only affects the service life of the expansion sleeve itself, but also may cause extrusion damage to the inner wall of the piston, destroying the accuracy and integrity of the piston.

[0005] 2. Since the piston is heavy and has a smooth inner wall, if the piston is fixed only by the expansion sleeve, once the tension between the expansion sleeve and the piston is insufficient or accidentally loosens during the assembly process, the piston may suddenly slip off, posing a safety hazard to the operator and surrounding equipment. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a large impactor piston lifting device, so that the lower positioning piece is rotated through the rotating shaft to be vertically aligned and pass through the piston hole, and then horizontally unfolded to provide stable support for the piston, and the upper positioning piece and the elastic force of the spring are combined to ensure the stable clamping of the large impactor piston during the lifting process, and effectively prevent damage to the inner wall of the piston, thereby ensuring the accuracy and integrity of the piston.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] Provided is a large impactor piston lifting tool, comprising: a lifting rod, a spring, an upper positioning piece and a lower positioning piece;

[0009] The upper positioning piece is sleeved on the suspension rod, and the spring is sleeved on the suspension rod above the upper positioning piece, and its lower end is abutted against the upper end of the upper positioning piece; a rotating shaft is horizontally provided at the lower end of the suspension rod, and a lower positioning piece that can vertically pass through the piston air hole is provided on the rotating shaft, and the lower positioning piece can rotate around the axis of the rotating shaft and can be horizontally unfolded after passing through the piston air hole.

[0010] It should be noted that, by rotating the lower positioning piece around the rotation axis, it can pass through the air hole of the piston in a vertical state, and can be horizontally unfolded to support the end of the piston after passing through, and by cooperating with the upper positioning piece and the lower positioning piece, the impactor piston is clamped on the suspension rod between the upper positioning piece and the lower positioning piece, and the upper positioning piece is pushed by the elastic force of the spring, and the elastic force of the spring is utilized to enable the upper positioning piece and the lower positioning piece to be stably clamped at both ends of the impactor piston, so that it can accurately and stably lift the large impactor piston.

[0011] Preferably, the weights of the lower positioning member on both sides of the rotating shaft are different, and the weight difference at both ends of the lower positioning member is utilized to enable the lower positioning member to rotate automatically.

[0012] It should be noted that the weight distribution of the lower positioning piece on both sides of the rotating shaft is uneven. By utilizing the weight difference at both ends, when the lifting equipment approaches the piston air hole, the heavy side will naturally droop, causing the lower positioning piece to automatically rotate, thereby vertically aligning with the air hole of the piston, so that the lower positioning piece can pass through the air hole. Moreover, after the installation is completed, it is only necessary to press down the lifting rod to keep the lower positioning piece vertical due to the weight difference, so as to facilitate the removal of the lifting equipment from the air hole, which simplifies the lifting operation process and improves work efficiency.

[0013] Preferably, the horizontal section of the lower positioning member is elliptical, the short axis of the elliptical lower positioning member is arranged to coincide with the axis center line of the rotating shaft, the length of the short axis is smaller than the diameter of the piston air hole, and the length of the long axis of the ellipse is larger than the diameter of the piston air hole.

[0014] It should be noted that the horizontal cross-section of the lower positioning piece is an ellipse, whose short axis coincides with the axis of rotation and is less than the diameter of the piston hole, and the long axis is longer than the diameter of the piston hole. This design ensures that during the rotation of the lower positioning piece, the short axis can always pass through the piston hole smoothly, while the long axis ensures that the lower positioning piece maintains effective contact with the piston, providing sufficient supporting force, so that the lower positioning piece can be smoothly inserted into the piston hole, while maintaining good supporting stability, preventing the piston from shaking or unhooking during lifting.

[0015] Preferably, a lifting ring is detachably provided at the upper end of the suspension rod, and the lifting ring comprises a connecting portion and a main body portion, wherein the connecting portion is arranged at the lower end of the main body portion and is fixedly connected to the suspension rod via a thread, and a hook hole is provided on the main body portion.

[0016] It should be noted that the detachable design of the lifting ring makes the lifting equipment easy to assemble, disassemble and carry, adapting to the needs of different work scenes. The hook hole on the main body is convenient for quick and safe connection with various lifting equipment, which improves the versatility and convenience of lifting.

[0017] Preferably, positioning rings are provided at both ends of the spring, and the positioning rings are fixedly connected to the lifting ring and the upper positioning member respectively.

[0018] It should be noted that positioning rings are provided at both ends of the spring, which are fixedly connected to the lifting ring and the upper positioning piece respectively, ensuring that the spring always maintains the correct position during the lifting process and will not be displaced or twisted, thereby enhancing the overall structural stability of the lifting equipment, ensuring the normal operation of the spring during the lifting process, and improving the safety and reliability of the lifting.

[0019] Preferably, a protective cover is provided on the outside of the spring.

[0020] It should be noted that the protective cover effectively extends the service life of the spring, prevents the spring from being directly exposed to the outside, reduces its contact with the external environment (such as dust, moisture, chemicals, etc.), reduces maintenance costs, and also helps to reduce noise and vibration during lifting, improve working comfort, and protect other components from unnecessary damage.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a large impactor piston lifting device, which enables the lower positioning piece to be vertically aligned and pass through the piston air hole after being rotated by the rotating shaft, and then horizontally unfolded to provide stable support for the piston, and cooperates with the elastic force of the upper positioning piece and the spring to ensure that the large impactor piston is accurately positioned and stably clamped during the lifting process to avoid shaking or unhooking, and the weight difference at both ends of the lower positioning piece is used to realize automatic rotation of the lower positioning piece, which greatly simplifies the operation process and improves work efficiency. The elliptical design of the lower positioning piece is adopted, so that the short axis of the lower positioning piece can pass through the air hole smoothly, and the long axis provides sufficient support to ensure that the piston remains stable during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of a large impactor piston lifting device according to Example 1 of the utility model.

[0024] Figure 2 This is a usage diagram of a large impactor piston lifting device according to Example 1 of the utility model.

[0025] Figure 3 Schematic diagram of the suspension rod structure of Example 1 of the utility model

[0026] Figure 4 This is a schematic diagram of the lifting ring structure of Example 1 of the utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the spring of Example 2 of the utility model.

[0028] In the figure: 1, suspension rod; 11, rotating shaft; 2, spring; 21, positioning ring; 3, upper positioning piece; 4, lower positioning piece; 5, piston; 6, lifting ring; 61, connecting part; 62, main body; 63, hook hole.

[0029] It should be noted that these drawings and text descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] like Figure 1-Figure 5 As shown, a large impactor piston lifting tool comprises: a lifting rod 1, a spring 2, an upper positioning member 3 and a lower positioning member 4;

[0033] The upper positioning member 3 is sleeved on the suspension rod 1, and the spring 2 is sleeved on the suspension rod 1 above the upper positioning member 3, and its lower end is abutted against the upper end of the upper positioning member 3; a rotating shaft 11 is horizontally provided at the lower end of the suspension rod 1, and a lower positioning member 4 that can vertically pass through the air hole of the piston 5 is provided on the rotating shaft 11, and the lower positioning member 4 can rotate around the axis of the rotating shaft 11, and can be horizontally unfolded after passing through the air hole of the piston 5.

[0034] The weights of the lower positioning member 4 on both sides of the rotating shaft 11 are different, and the weight difference between the two ends of the lower positioning member 4 is utilized to enable the lower positioning member 4 to rotate automatically.

[0035] The horizontal section of the lower positioning member 4 is elliptical, the minor axis of the elliptical lower positioning member 4 coincides with the axis of the rotating shaft 11, and the length of the minor axis is smaller than the diameter of the piston 5 pore, and the length of the major axis of the ellipse is larger than the diameter of the piston 5 pore.

[0036] The upper end of the suspension rod 1 is detachably provided with a lifting ring 6, and the lifting ring 6 includes a connecting portion 61 and a main body 62. The connecting portion 61 is arranged at the lower end of the main body 62 and is fixedly connected to the suspension rod 1 through threads. The main body 62 is provided with a hook hole 63.

[0037] Positioning rings 21 are provided at both ends of the spring 2 , and the positioning rings 21 are fixedly connected to the hanging ring 6 and the upper positioning member 3 respectively.

[0038] A protective cover is arranged on the outside of the spring 2 .

[0039] The working principle and use method of a large impactor piston lifting device of this embodiment:

[0040] The present embodiment provides a large impactor piston lifting device, which supports the lower end of the piston 5 by the lower positioning member 4, so that the piston 5 can be loaded on the suspension rod 1, and the upper positioning member 3 is pressed against the upper end of the piston 5 by the elastic force of the spring 2, and the upper positioning member 3 and the lower positioning member 4 are matched to clamp the two ends of the impactor piston 5, and the piston 5 is stably clamped on the suspension rod 1 by the elastic force of the spring 2, so as to avoid the piston 5 from shaking during the lifting process, and the weight distribution of the lower positioning member 4 on both sides of the rotating shaft 11 is uneven, and this weight difference is used to make the lifting device close to the air hole of the piston 5. When the weight is increased, the heavier side will naturally droop, causing the lower positioning piece 4 to rotate automatically and accurately align with the air hole of the piston 5, so that the lower positioning piece 4 can be smoothly inserted into the air hole of the piston 5. The lifting ring 6 at the upper end of the suspension rod 1 adopts a detachable design, and the connecting part 61 is fixedly connected to the suspension rod 1 by a thread. The main body 62 is provided with a hook hole 63, which is convenient for quick and safe connection with a crane or other lifting equipment. Positioning rings 21 are provided at both ends of the spring 2, which are respectively fixedly connected to the lifting ring 6 and the upper positioning piece 3 to ensure that the spring 2 maintains the correct position during the lifting process without displacement or distortion, thereby enhancing the stability of the overall structure.

[0041] When in use, first assemble the lifting equipment, put the upper positioning piece 3 on the suspension rod 1, and put the spring 2 on the upper positioning piece 3 to ensure that the lower end of the spring 2 is tightly abutted against the upper end of the upper positioning piece 3. Then install the lifting ring 6 and fix it to the upper end of the suspension rod 1 through threads to ensure a stable connection. Hold the lifting equipment in hand to make the lower positioning piece 4 close to the air hole of the large impactor piston 5 to be lifted. Use the weight difference on both sides of the lower positioning piece 4 to keep the lower positioning piece 4 vertical. Gently press down the lifting equipment to make the lower positioning piece 4 pass through the air hole of the piston 5, and expand the lower positioning piece 4 horizontally under ground support or manual operation, release the downward pressure, and make the upper positioning piece 3 in The spring 2 is pressed toward the piston 5 under the action of the elastic force, and the suspension rod 1 moves upward under the action of the elastic force, so that the lower positioning piece 4 is closely fitted with the lower end surface of the piston 5, and then the lifting tool is reliably connected to the safety chain or hook of the crane or other lifting equipment through the hook hole 63 of the main body 62 of the lifting ring 6, the lifting equipment is started, the lifting tool and the clamped piston 5 are lifted steadily, the piston 5 is lifted to the desired installation position, and slowly lowered until the piston 5 is completely placed in place, and finally, the suspension rod 1 is pressed downward again to keep the lower positioning piece 4 vertical under the action of weight, so that it can be pulled out of the air hole of the piston 5, thereby safely removing the lifting tool.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the utility model, which is only used to illustrate the technical solution of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

[0043] In the description of the present invention, it needs to be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "upper end", "lower end", "upper surface", "lower surface", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connection" and "set" 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 it can be 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.

Claims

1. A large impactor piston lifting device, comprising: A suspension rod (1), a spring (2), an upper positioning member (3) and a lower positioning member (4); characterized in that: The upper positioning member (3) is sleeved on the suspension rod (1); the spring (2) is sleeved on the suspension rod (1) above the upper positioning member (3), and its lower end is in contact with the upper end of the upper positioning member (3); a rotating shaft (11) is horizontally provided at the lower end of the suspension rod (1); a lower positioning member (4) is provided on the rotating shaft (11) and can vertically pass through the air hole of the piston (5); the lower positioning member (4) can rotate around the axis of the rotating shaft (11) and can be horizontally unfolded after passing through the air hole of the piston (5).

2. A large impactor piston lifting device as claimed in claim 1, characterized in that: The weights of the lower positioning member (4) on both sides of the rotating shaft (11) are different, and the weight difference between the two ends of the lower positioning member (4) is utilized to enable the lower positioning member (4) to rotate automatically.

3. A large impactor piston lifting device as claimed in claim 1, characterized in that: The horizontal section of the lower positioning member (4) is elliptical, the minor axis of the elliptical lower positioning member (4) is arranged to coincide with the axis center line of the rotating shaft (11), the length of the minor axis is smaller than the diameter of the piston (5) air hole, and the length of the major axis of the ellipse is larger than the diameter of the piston (5) air hole.

4. A large impactor piston lifting device as claimed in claim 1, characterized in that: The upper end of the suspension rod (1) is detachably provided with a suspension ring (6), and the suspension ring (6) comprises a connecting portion (61) and a main body (62). The connecting portion (61) is arranged at the lower end of the main body (62) and is fixedly connected to the suspension rod (1) via a thread, and a hook hole (63) is provided on the main body (62).

5. A large impactor piston lifting device as claimed in claim 4, characterized in that: Positioning rings (21) are provided at both ends of the spring (2), and the positioning rings (21) are fixedly connected to the lifting ring (6) and the upper positioning member (3) respectively.

6. A large impactor piston lifting device as claimed in claim 1, characterized in that: A protective cover is arranged on the outside of the spring (2).

Images