Elastic double-thread screw for hydraulic impact hammer

Abstract

The utility model relates to the technical field of double-thread screws, in particular to an elastic double-thread screw for a hydraulic impact hammer, which comprises a double-thread screw and a plurality of threaded blocks, the outer wall of the double-thread screw is in threaded connection with the plurality of threaded blocks, and a plurality of through holes are processed on the outer wall of the double-thread screw. A double-thread screw is connected with a hydraulic impact hammer, then a threaded block is connected with a double-thread bolt, so that the threaded block drives the hydraulic cylinder impact hammer to move inwards along with the threaded block while moving inwards along a thread on one side of the double-thread screw, and the threaded block drives a limiting block to move inwards through the hydraulic impact hammer; the limiting block drives the connecting rod to move inwards, the connecting rod drives the sliding block to move inwards, the sliding block drives the second spring to be compressed, after installation is completed, the elastic force of the second spring acts on the threaded block through the limiting block all the time, and the threaded block abuts against the threaded groove of the double-thread screw.

Description

Technical Field

[0001] The utility model relates to the technical field of double-headed screws, in particular to an elastic double-headed screw for a hydraulic impact hammer. Background Art

[0002] Stud screws are also called stud bolts. They are used to connect mechanical fixed links. Stud bolts have threads on both ends. The middle screw has thick and thin threads. They are generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, crane towers, large-span steel structures and large buildings.

[0003] For example, the double-head screw with the authorization announcement number CN208734697U, the above document stipulates that during installation, if the upper and lower mounting holes of the upper and lower connecting parts have a large deviation from each other and are difficult to align, the installation is completed by aligning the upper polished rod section and the lower polished rod section front and back. Of course, before installation, it is necessary to open a larger diameter countersunk hole at the lower end of the upper mounting hole of the upper connecting part to prevent interference between the lower polished rod section and the mounting hole of the upper connecting part after the misalignment. In addition, since the upper screw segment and the lower screw segment are made of different materials, the material of the upper screw segment can match the upper connecting piece (for example, it must be stainless steel or a special corrosion-resistant material), and the material of the lower screw segment can match the lower connecting piece (ordinary carbon steel material) to reduce costs and ensure connection reliability. However, during the use of the double-headed screw in the above document, there is a certain gap between the double-headed screw in the above document and the threaded block used for connecting the hydraulic impact hammer, so that the double-headed screw and the threaded block are affected by the vibration during the operation of the hydraulic impact hammer, and the relative movement between the threaded block and the double-headed screw causes the double-headed screw and the threaded block to become loose, thereby affecting the stability of the connection with the hydraulic impact hammer;

[0004] At the same time, the double-headed screw in the above-mentioned document is prone to aging and rusting due to the influence of the surrounding environment between the thread block and the double-headed screw due to long-term use, and the double-headed screw in the above-mentioned document cannot lubricate the thread block and the double-headed screw from the inside, so that when the thread block and the double-headed screw used for connecting the hydraulic impact hammer are disassembled, it is easy to cause the threads between the double-headed screws to be damaged, thereby making it more laborious to disassemble the hydraulic impact hammer; Utility Model Content

[0005] The utility model aims to solve the problem that the double-headed screw and the threaded block are easily loosened due to the vibration during the operation of the hydraulic impact hammer and the problem that the double-headed screw cannot lubricate the threaded block and the double-headed screw from the inside, and proposes an elastic double-headed screw for a hydraulic impact hammer.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An elastic double-headed screw for a hydraulic impact hammer is designed, comprising a double-headed screw and a threaded block, the outer wall of the double-headed screw is threadedly connected to a plurality of threaded blocks, a plurality of through holes are processed on the outer wall of the double-headed screw, the bottoms on both sides of the double-headed screw are respectively threadedly connected to a plurality of threaded plugs, the outer wall of the threaded plug is fixedly connected to a sealing gasket, the outer wall of the sealing gasket is tightly pressed against the double-headed screw, a hexagonal groove is processed on the outer side of the threaded plug, the inner wall of the double-headed screw is fixedly connected to an oil-absorbing sponge, a limiting structure is arranged on the inner side of the double-headed screw, and an auxiliary structure is arranged inside the double-headed screw.

[0008] Preferably, the limiting structure includes a second spring, one end of the second spring is fixedly connected to the double-headed screw, the other end of the second spring is fixedly connected to the slider, both sides of the slider are fixedly connected to the connecting rod, and the outer end of the connecting rod is fixedly connected to the limiting block.

[0009] Preferably, the inner wall of the limit block is sleeved with the double-headed screw, and the outer wall of the sliding block is slidably connected with the double-headed screw.

[0010] Preferably, the auxiliary structure includes a first spring, one end of which is fixedly connected to the double-headed screw, the other end of which is fixedly connected to the conical block, the outer end of the conical block is fixedly connected to the sliding rod, the outer end of the sliding rod is fixedly connected to the round block, and the outer side of the round block is rotatably connected to the pull ring.

[0011] Preferably, the outer wall of the round block is slidably connected to the double-headed screw, and the outer wall of the conical block is tightly pressed against the threaded plug.

[0012] Preferably, the outer wall of the sliding rod is slidably connected to the double-headed screw, and the outer wall of the conical block is in contact with the oil-absorbing sponge.

[0013] The utility model provides an elastic double-headed screw for a hydraulic impact hammer, and its beneficial effect lies in that: by connecting the double-headed screw with the hydraulic impact hammer and then connecting the double-headed bolt of the threaded block, the threaded block moves inward along the thread of one side of the double-headed screw, and drives the hydraulic cylinder impact hammer to move inward along with the threaded block, so that the threaded block drives the limit block to move inward through the hydraulic impact hammer, the limit block drives the connecting rod to move inward, and the connecting rod drives the slide block to move inward, so that the slide block drives the second spring to compress, and after the installation is completed, the elastic force of the second spring always acts on the threaded block through the limit block, so that the threaded block has a tight contact with the thread groove of the double-headed screw, and the gap between the double-headed screw and the threaded block is offset, so as to avoid the double-headed screw and the threaded block from being loosened due to the vibration of the hydraulic impact hammer during operation, thereby improving the stability of the connection between the hydraulic impact hammer and the double-headed screw;

[0014] The user moves the pull ring to make it rotate along the round block, and then pulls the round block through the pull ring. The round block drives the sliding rod to move outward, the sliding rod drives the conical block to move outward, the conical block drives the first spring to compress, and at the same time the conical block squeezes the sponge so that the lubricating oil inside the oil-absorbing sponge is affected by the pressure of the conical block and flows out through the through hole to lubricate the double-headed screw and the threaded block, avoiding the double-headed screw and the threaded block being affected by the surrounding environment and causing aging and rusting, which makes the threads of the double-headed screw easy to be damaged when the hydraulic impact hammer is disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the main view of the utility model;

[0017] Figure 3 for Figure 2 The structural diagram of A in the figure;

[0018] Figure 4 for Figure 2 Schematic diagram of the side structure.

[0019] In the figure: 1, double-headed screw, 2, threaded block, 3, auxiliary structure, 301, tapered block, 302, first spring, 303, sliding rod, 304, round block, 305, pull ring, 4, limiting structure, 4a1, second spring, 4a2, sliding block, 4a3, connecting rod, 4a4, limiting block, 4b1, rubber pad, 5, oil-absorbing sponge, 6, through hole, 7, threaded plug, 8, sealing pad. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Embodiment 1: refer to the attached Figure 1-4 : An elastic double-headed screw for a hydraulic impact hammer, comprising a double-headed screw 1 and a threaded block 2, the outer wall of the double-headed screw 1 is threadedly connected to multiple threaded blocks 2, the outer wall of the double-headed screw 1 is processed with multiple through holes 6, the bottoms of both sides of the double-headed screw 1 are respectively threadedly connected to multiple threaded plugs 7, the outer wall of the threaded plug 7 is fixedly connected to a sealing gasket 8, the outer wall of the sealing gasket 8 is tightly pressed against the double-headed screw 1, and the outer side of the threaded plug 7 is processed with a hexagonal groove, which is connected to the hexagonal groove of the threaded plug 7 by rotating it with the help of a hexagonal wrench of corresponding size to realize the rotation of the threaded plug 7, thereby realizing the disassembly of the threaded plug 7 and injecting lubricant into the interior of the double-headed screw 1, absorbing it through the oil-absorbing sponge, and ensuring the sealing between the threaded plug 7 and the double-headed screw 1 through the sealing gasket 8, the inner wall of the double-headed screw 1 is fixedly connected to the oil-absorbing sponge 5, a limiting structure 4 is arranged on the inner side of the double-headed screw 1, and an auxiliary structure 3 is arranged inside the double-headed screw 1.

[0022] The limiting structure 4 includes a second spring 4a1, one end of which is fixedly connected to the stud screw 1, and the other end of the second spring 4a1 is fixedly connected to the slider 4a2. When the stud screw 1 is connected to the hydraulic impact hammer, the threaded block 2 on one side is first separated from the stud screw 1, and then the stud screw 1 is connected to the hydraulic impact hammer. Then, the threaded block 2 is connected to the stud bolt 1, so that the threaded block 2 moves inward along the thread on one side of the stud screw 1, while driving the hydraulic cylinder impact hammer to move inward with the threaded block 2, so that the threaded block 2 drives the limiting block 4a4 to move inward through the hydraulic impact hammer, and the limiting block 4a4 drives the connecting rod 4a3 to move inward, and the connecting rod 4a3 drives the slider 4a2 to move inward. The movement causes the slider 4a2 to compress the second spring 4a1. After the installation is completed, the elastic force of the second spring 4a1 always acts on the threaded block 2 through the limit block 4a4, so that the threaded block 2 is tightly pressed against the thread groove of the double-headed screw 1, and the gap between the double-headed screw 1 and the threaded block 2 is offset, so as to prevent the double-headed screw 1 and the threaded block 2 from loosening due to the vibration of the hydraulic impact hammer during operation, thereby improving the connection stability between the hydraulic impact hammer and the double-headed screw 1. The two sides of the slider 4a2 are fixedly connected to the connecting rod 4a3, the outer end of the connecting rod 4a3 is fixedly connected to the limit block 4a4, the inner wall of the limit block 4a4 is sleeved with the double-headed screw 1, and the outer wall of the slider 4a2 is slidably connected to the double-headed screw 1.

[0023] The auxiliary structure 3 includes a first spring 302, one end of which is fixedly connected to the double-headed screw 1, and the other end of the first spring 302 is fixedly connected to the conical block 301, and the outer end of the conical block 301 is fixedly connected to the slide rod 303, and the outer end of the slide rod 303 is fixedly connected to the round block 304. The user pulls the pull ring 305 to make the pull ring 305 rotate along the round block 304, and then pulls the round block 304 through the pull ring 305, and the round block 304 drives the slide rod 303 to move outward, and the slide rod 303 drives the conical block 301 to move outward, and the conical block 301 drives the first spring 302 to compress, and at the same time the conical block 301 squeezes the sea The lubricating oil inside the oil-absorbing sponge 5 is affected by the pressure of the conical block 304 and flows out through the through hole 6 to lubricate the double-headed screw 1 and the threaded block 2, avoiding the double-headed screw 1 and the threaded block 2 from being affected by the surrounding environment and aging and rusting, which may cause the threads of the double-headed screw 1 to be easily damaged when the hydraulic impact hammer is disassembled. The outer side of the round block 304 is rotatably connected to the pull ring 305, the outer wall of the round block 304 is slidably connected to the double-headed screw 1, the outer wall of the conical block 301 is tightly pressed against the threaded plug 7, the outer wall of the sliding rod 303 is slidably connected to the double-headed screw 1, and the outer wall of the conical block 301 fits against the oil-absorbing sponge 5.

[0024] Working principle:

[0025] When connecting the double-headed screw rod 1 with the hydraulic impact hammer, first separate the thread block 2 on one side from the double-headed screw rod 1, then connect the double-headed screw rod 1 with the hydraulic impact hammer, and then connect the thread block 2 with the stud bolt 1, so that the thread block 2 moves inward along the thread of one side of the double-headed screw rod 1, while driving the hydraulic cylinder impact hammer to move inward with the thread block 2, so that the thread block 2 drives the limit block 4a4 to move inward through the hydraulic impact hammer, and the limit block 4a4 drives the connecting rod 4a3 to move inward. The connecting rod 4a3 drives the slider 4a2 to move inward, so that the slider 4a2 drives the second spring 4a1 to compress. After the installation is completed, the elastic force of the second spring 4a1 always acts on the thread block 2 through the limit block 4a4, so that the thread block 2 has a tight contact with the thread groove of the double-headed screw rod 1, and the gap between the double-headed screw rod 1 and the thread block 2 is offset, so as to avoid the double-headed screw rod 1 and the thread block 2 from being loosened due to the vibration of the hydraulic impact hammer during operation, thereby improving the connection stability between the hydraulic impact hammer and the double-headed screw rod 1;

[0026] The threaded plug 7 is rotated by using a hexagonal wrench of corresponding size to connect with the hexagonal groove of the threaded plug 7, so as to realize the rotation of the threaded plug 7, thereby realizing the disassembly of the threaded plug 7, and injecting the lubricant into the inside of the double-headed screw 1, absorbing it through the oil absorption sponge, and then resetting the threaded plug 7, and the sealing between the threaded plug 7 and the double-headed screw 1 is ensured by the sealing gasket 8;

[0027] The user moves the pull ring 305 to make the pull ring 305 rotate along the round block 304, and then pulls the round block 304 through the pull ring 305. The round block 304 drives the sliding rod 303 to move outward, and the sliding rod 303 drives the conical block 301 to move outward. The conical block 301 drives the first spring 302 to compress, and at the same time the conical block 301 squeezes the sponge 5 so that the lubricating oil inside the oil-absorbing sponge 5 is affected by the pressure of the conical block 304 and flows out through the through hole 6 to lubricate the double-headed screw 1 and the threaded block 2, thereby avoiding the double-headed screw 1 and the threaded block 2 being affected by the surrounding environment and aging and rusting, which makes the threads of the double-headed screw 1 easy to be damaged when the hydraulic impact hammer is disassembled.

[0028] Example 2: Refer to the attached Figure 1-4 In the present embodiment, an elastic double-headed screw is provided for a hydraulic impact hammer, wherein the limiting structure 4 may further include a rubber pad 4b1, the inner end of the rubber pad 4b1 being fixedly connected to the limiting block 4a4, and the friction force of the contact area between the limiting block 4a4 and the hydraulic impact hammer is increased through the rubber pad 4b1, thereby improving the stability between the hydraulic impact hammer and the limiting block.

[0029] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An elastic double-ended screw for a hydraulic impact hammer, comprising a double-ended screw (1) and a threaded block (2), wherein the outer wall of the double-ended screw (1) is threadably connected to a plurality of threaded blocks (2), and characterized in that: The outer wall of the double-headed screw (1) is processed with a plurality of through holes (6); the bottoms of both sides of the double-headed screw (1) are respectively threadedly connected to a plurality of threaded plugs (7); the outer wall of the threaded plug (7) is fixedly connected to a sealing gasket (8); the outer wall of the sealing gasket (8) is tightly abutted against the double-headed screw (1); the outer side of the threaded plug (7) is processed with a hexagonal groove; the inner wall of the double-headed screw (1) is fixedly connected to an oil-absorbing sponge (5); a limiting structure (4) is provided on the inner side of the double-headed screw (1); and an auxiliary structure (3) is provided inside the double-headed screw (1).

2. The elastic double-headed screw for a hydraulic impact hammer according to claim 1, characterized in that: The limiting structure (4) comprises a second spring (4a1), one end of the second spring (4a1) is fixedly connected to the double-headed screw (1), the other end of the second spring (4a1) is fixedly connected to the slider (4a2), both sides of the slider (4a2) are fixedly connected to the connecting rod (4a3), and the outer end of the connecting rod (4a3) is fixedly connected to the limiting block (4a4).

3. The elastic double-headed screw for a hydraulic impact hammer according to claim 2, characterized in that: The inner wall of the limit block (4a4) is sleeved with the double-headed screw (1), and the outer wall of the sliding block (4a2) is slidably connected with the double-headed screw (1).

4. The elastic double-headed screw for a hydraulic impact hammer according to claim 1, characterized in that: The auxiliary structure (3) comprises a first spring (302), one end of the first spring (302) is fixedly connected to the double-headed screw (1), the other end of the first spring (302) is fixedly connected to the conical block (301), the outer end of the conical block (301) is fixedly connected to the sliding rod (303), the outer end of the sliding rod (303) is fixedly connected to the round block (304), and the outer side of the round block (304) is rotatably connected to the pull ring (305).

5. The elastic double-headed screw for a hydraulic impact hammer according to claim 4, characterized in that: The outer wall of the round block (304) is slidably connected to the double-headed screw (1), and the outer wall of the conical block (301) is tightly abutted against the threaded plug (7).

6. The elastic double-headed screw for a hydraulic impact hammer according to claim 4, characterized in that: The outer wall of the sliding rod (303) is slidably connected to the double-headed screw (1), and the outer wall of the conical block (301) is in contact with the oil-absorbing sponge (5).

Images