Anti-falling auxiliary pulley device for petroleum drilling machine crown block

Abstract

The utility model relates to the technical field of anti-falling auxiliary pulleys, and discloses an anti-falling auxiliary pulley device for a petroleum drilling machine crown block, which comprises a crown block frame, an anti-falling mechanism is arranged at the bottom of the crown block frame, a moving mechanism is arranged at the bottom of the crown block frame, and the anti-falling mechanism comprises a plug-in component and a mounting component. And the mounting assembly is arranged at the bottom of the inserting assembly. According to the hoisting device, the pulley frame and the first threaded rod are installed in a threaded mode, so that an inserting block slides in a sliding groove of the mounting plate and then is connected with an inserting groove in the mounting frame in an inserted mode, the pulley body is prevented from falling in the using process, the pulley body does not shake, and therefore a hoisted object is kept stable and does not shake, and danger is reduced; and the pulley bodies move under limiting of the bolts, then the positions of the pulley bodies are adjusted, the positions of the two pulley bodies are adjusted at the same time, the left-right stability of the device is kept, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-falling auxiliary pulleys, in particular to an anti-falling auxiliary pulley device for a petroleum drilling rig overhead crane. Background Art

[0002] As an important equipment of the drilling rig lifting system, the overhead crane has the function of changing the direction of the drilling rope. At the same time, the overhead crane can also reduce the load of the winch, so that the lifting system can obtain greater mechanical efficiency. The overhead crane is installed at the top of the oil drilling rig and belongs to high-altitude operation. An auxiliary pulley device needs to be installed on the overhead crane, so an anti-fall auxiliary pulley device for the oil drilling rig overhead crane is needed to prevent the anti-fall pulley device from falling and causing safety hazards.

[0003] In the prior art, the auxiliary pulley is suspended on the overhead crane by means of a safety rope. However, in actual use, the safety rope passes through the anti-fall hole. When the auxiliary pulley falls, the safety rope hangs the auxiliary pulley, and the auxiliary pulley still shakes, causing the objects being pulled to shake in the air, which can easily cause safety hazards. Therefore, it is necessary to improve an anti-fall auxiliary pulley device for the overhead crane of an oil rig to solve the above problem. Utility Model Content

[0004] The utility model aims to provide an anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-fall auxiliary pulley device for a crown block of an oil drilling rig, comprising a crown block frame, an anti-fall mechanism is provided at the bottom of the crown block frame, and a moving mechanism is provided at the bottom of the crown block frame;

[0006] The anti-falling mechanism comprises a plug-in assembly and a mounting assembly, and the mounting assembly is arranged at the bottom of the plug-in assembly.

[0007] Preferably, the plug-in assembly includes a sliding block, which is slidably mounted on the top of the overhead crane frame, a mounting frame is fixedly mounted on the bottom of the sliding block, a mounting plate is fixedly mounted inside the mounting frame, a telescopic rod is fixedly mounted inside the mounting plate, a plug-in block is fixedly mounted on the end of the telescopic rod away from the mounting plate, a spring is fixedly mounted on the end of the plug-in block close to the telescopic rod, a connecting rod is rotatably mounted on the top of the plug-in block, and a cylinder is rotatably mounted on the end of the connecting rod away from the plug-in block, so that the plug-in block slides inside the slide groove of the mounting plate and then plugs into the slot inside the mounting frame, thereby preventing the pulley body from falling during use and the pulley body from shaking, so that the hoisted object remains stable and does not shake, thereby reducing the occurrence of danger.

[0008] Preferably, one end of the spring away from the plug-in block is fixedly mounted on the mounting plate, a sliding groove is provided at the corresponding positions of the mounting plate and the plug-in block, and the plug-in block is slidably mounted inside the sliding groove, a slot is provided at the corresponding positions of the mounting frame and the plug-in block, and the plug-in block is plugged into the slot, the telescopic rod, spring, plug-in block, connecting rod and cylinder are provided in two groups, and are symmetrically distributed about the center line of the front side of the sliding block, so that the plug-in block is plugged into the slots at both ends to maintain the stability of the device.

[0009] Preferably, the mounting assembly comprises a bolt, the bolt threadedly mounted inside the cylinder, a rotating block threadedly mounted on the top of the bolt, a handle fixedly mounted on the top of the rotating block, a pulley frame provided outside the bolt, a rotating shaft rotatably mounted inside the pulley frame, a pulley body fixedly mounted outside the rotating shaft, and the rotating block is threadedly mounted on the outside of the bolt through the handle to fix the pulley body.

[0010] Preferably, through holes are provided at positions corresponding to the pulley frame, mounting plate, sliding block and bolts, and the bolts pass through the pulley frame and mounting plate in sequence to be threadedly installed on the cylinder, and pass through the cylinder and sliding block to be threadedly installed on the rotating block. The diameter of the rotating block is larger than the diameter of the through hole provided on the sliding block, so that the rotating block can fix the pulley body.

[0011] Preferably, the moving mechanism includes a power box, the power box is fixedly installed inside the mounting frame, a bevel gear one is rotatably installed inside the mounting frame, a bevel gear two is rotatably installed inside the power box, a bevel gear three is rotatably installed inside the power box, a threaded rod one is fixedly installed on the left side of the bevel gear two, a threaded rod two is fixedly installed on the right side of the bevel gear three, a motor one is fixedly installed inside the power box, the pulley frame is threadedly installed with the threaded rod one, and moves under the limit of the bolt, thereby adjusting the position of the pulley body, and adjusting the positions of the two pulley bodies at the same time, maintaining the left and right stability of the device, and increasing the applicability of the device.

[0012] Preferably, the bevel gear 2 is meshed with the bevel gear 1, the bevel gear 1 is meshed with the bevel gear 3, the thread directions of the threaded rod 1 and the threaded rod 2 are opposite, the pulley frame is threadedly installed on the outside of the threaded rod 1, and the output end of the motor 1 is fixedly installed with the bevel gear 1, so that the positions of the two pulley bodies move simultaneously.

[0013] Compared with the prior art, the utility model provides an anti-fall auxiliary pulley device for an oil drilling rig overhead crane, which has the following beneficial effects:

[0014] 1. The anti-fall auxiliary pulley device for the oil drilling rig overhead crane, through the anti-fall mechanism, during use, the plug-in block slides inside the slide groove of the mounting plate, and then plugs into the slot inside the mounting frame, preventing the pulley body from falling during use, and the pulley body will not shake, so that the hoisted objects remain stable and will not shake, thereby reducing the occurrence of danger.

[0015] 2. The anti-fall auxiliary pulley device for the oil drilling rig overhead crane has a movable mechanism. During use, the pulley frame is threadedly installed with the threaded rod and moves under the limit of the bolt, thereby adjusting the position of the pulley body and adjusting the positions of the two pulley bodies at the same time, maintaining the left and right stability of the device and increasing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance structure of the anti-falling mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the plug-in assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the installation assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the mobile mechanism of the utility model.

[0022] In the figure: 1. overhead crane frame; 2. anti-fall mechanism; 21. plug-in assembly; 211. sliding block; 212. mounting frame; 213. mounting plate; 214. telescopic rod; 215. spring; 216. plug-in block; 217. connecting rod; 218. cylinder; 22. mounting assembly; 221. bolt; 222. pulley frame; 223. rotating shaft; 224. pulley body; 225. rotating block; 226. handle; 3. moving mechanism; 31. power box; 32. motor one; 33. bevel gear one; 34. bevel gear two; 35. bevel gear three; 36. threaded rod one; 37. threaded rod two. DETAILED DESCRIPTION

[0023] 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 in 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.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1:

[0026] See also Figure 1-4 The utility model provides a technical solution: an anti-fall auxiliary pulley device for a crown block of an oil drilling rig, comprising a crown block frame 1, an anti-fall mechanism 2 is arranged at the bottom of the crown block frame 1, and a moving mechanism 3 is arranged at the bottom of the crown block frame 1;

[0027] The anti-fall mechanism 2 includes a plug-in component 21 and a mounting component 22 , and the mounting component 22 is arranged at the bottom of the plug-in component 21 .

[0028] Furthermore, the plug-in assembly 21 includes a sliding block 211, which is slidably installed on the top of the overhead crane frame 1, and a mounting frame 212 is fixedly installed on the bottom of the sliding block 211, a mounting plate 213 is fixedly installed inside the mounting frame 212, a telescopic rod 214 is fixedly installed inside the mounting plate 213, a plug-in block 216 is fixedly installed on the end of the telescopic rod 214 away from the mounting plate 213, a spring 215 is fixedly installed on the end of the plug-in block 216 close to the telescopic rod 214, a connecting rod 217 is rotatably installed on the top of the plug-in block 216, and a cylinder 218 is rotatably installed on the end of the connecting rod 217 away from the plug-in block 216, so that the plug-in block 216 slides inside the slide groove of the mounting plate 213, and then plugs into the slot inside the mounting frame 212, so as to prevent the pulley body 224 from falling during use, and the pulley body 224 will not shake, so that the hoisted objects remain stable and will not shake, thereby reducing the occurrence of danger.

[0029] Furthermore, one end of the spring 215 away from the plug-in block 216 is fixedly installed on the mounting plate 213, a slide groove is provided at the corresponding position of the mounting plate 213 and the plug-in block 216, and the plug-in block 216 is slidably installed inside the slide groove, a slot is provided at the corresponding position of the mounting frame 212 and the plug-in block 216, and the plug-in block 216 is plugged into the slot, and the telescopic rod 214, the spring 215, the plug-in block 216, the connecting rod 217 and the cylinder 218 are provided in two groups and are symmetrically distributed on the front center line of the sliding block 211, so that the plug-in block 216 is plugged into the slots at both ends to maintain the stability of the device.

[0030] Furthermore, the mounting assembly 22 includes a bolt 221, which is threadedly mounted inside the cylinder 218, a rotating block 225 is threadedly mounted on the top of the bolt 221, a handle 226 is fixedly mounted on the top of the rotating block 225, a pulley frame 222 is arranged outside the bolt 221, a rotating shaft 223 is rotatably mounted inside the pulley frame 222, a pulley body 224 is fixedly mounted outside the rotating shaft 223, and the rotating block 225 is threadedly mounted on the outside of the bolt 221 through the handle 226 to fix the pulley body 224.

[0031] Furthermore, through holes are opened at positions corresponding to the pulley frame 222, the mounting plate 213, the sliding block 211 and the bolt 221, and the bolt 221 passes through the pulley frame 222 and the mounting plate 213 and is threadedly installed with the cylinder 218 in sequence, and passes through the cylinder 218 and the sliding block 211 and is threadedly installed with the rotating block 225. The diameter of the rotating block 225 is larger than the diameter of the through hole opened in the sliding block 211, so that the rotating block 225 can fix the pulley body 224.

[0032] Embodiment 2:

[0033] See also Figure 5 , and combined with Example 1, it is further obtained that the moving mechanism 3 includes a power box 31, the power box 31 is fixedly installed inside the mounting frame 212, a bevel gear 1 33 is rotatably installed inside the mounting frame 212, a bevel gear 2 34 is rotatably installed inside the power box 31, a bevel gear 3 35 is rotatably installed inside the power box 31, a threaded rod 1 36 is fixedly installed on the left side of the bevel gear 2 34, and a threaded rod 2 37 is fixedly installed on the right side of the bevel gear 35, a motor 1 32 is fixedly installed inside the power box 31, the pulley frame 222 is threadedly installed with the threaded rod 1 36, and moves under the limit of the bolt 221, thereby adjusting the position of the pulley body 224, and adjusting the positions of the two pulley bodies 224 at the same time, maintaining the left and right stability of the device, and increasing the applicability of the device.

[0034] Furthermore, bevel gear 2 34 meshes with bevel gear 1 33, bevel gear 1 33 meshes with bevel gear 3 35, threaded rod 1 36 and threaded rod 2 37 have opposite thread directions, pulley frame 222 is threadedly installed on the outside of threaded rod 1 36, and the output end of motor 1 32 is fixedly installed with bevel gear 1 33, so that the positions of the two pulley bodies 224 move simultaneously.

[0035] In actual operation, when the device is used, when installing the device, firstly, the bolt 221 is passed through the pulley frame 222 and the mounting plate 213 in sequence, and is threadedly installed with the cylinder 218, and the cylinder 218 is set on the inner side of the top of the mounting frame 212, and then the sliding block 211 is passed through, and the rotating block 225 is threadedly installed on the outer side of the bolt 221 through the handle 226, and the pulley body 224 is fixed. If the rotating block 225 and the bolt 221 are not threadedly installed during use of the device, resulting in separation, the bolt 221 drives the cylinder 218 to descend, the connecting rod 217 loses its tension, and the spring 215 loses its restriction and rebounds, so that the plug-in block 216 slides inside the slide groove of the mounting plate 213, and then engages with the inside of the mounting frame 212. The slot is plugged in to prevent the pulley body 224 from falling during use, and the pulley body 224 will not shake, so that the hoisted objects remain stable and will not shake, thereby reducing the occurrence of danger. If the position of the telescopic rod 214 needs to be adjusted, start the motor 32, and the rotation of the motor 32 drives the bevel gear 33 to rotate. The rotation of the bevel gear 33 drives the bevel gear 2 34 and the threaded rod 1 36 engaged therewith to rotate, thereby rotating the threaded rod 1 36 and the threaded rod 2 37. Because the pulley frame 222 is threadedly installed with the threaded rod 1 36 and moves under the limit of the bolt 221, the position of the pulley body 224 is adjusted, and the positions of the two pulley bodies 224 are adjusted at the same time to maintain the left and right stability of the device and increase the applicability of the device.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An anti-fall auxiliary pulley device for a crown block of an oil drilling rig, comprising a crown block frame (1), characterized in that: The bottom of the overhead crane frame (1) is provided with an anti-falling mechanism (2), and the bottom of the overhead crane frame (1) is provided with a moving mechanism (3); The anti-fall mechanism (2) comprises a plug-in component (21) and a mounting component (22), wherein the mounting component (22) is arranged at the bottom of the plug-in component (21).

2. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 1, characterized in that: The plug-in assembly (21) comprises a sliding block (211), wherein the sliding block (211) is slidably mounted on the top of the overhead crane frame (1), a mounting frame (212) is fixedly mounted on the bottom of the sliding block (211), a mounting plate (213) is fixedly mounted inside the mounting frame (212), a telescopic rod (214) is fixedly mounted inside the mounting plate (213), a plug-in block (216) is fixedly mounted on one end of the telescopic rod (214) away from the mounting plate (213), a spring (215) is fixedly mounted on one end of the plug-in block (216) close to the telescopic rod (214), a connecting rod (217) is rotatably mounted on the top of the plug-in block (216), and a cylinder (218) is rotatably mounted on one end of the connecting rod (217) away from the plug-in block (216).

3. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 2, characterized in that: One end of the spring (215) away from the plug-in block (216) is fixedly mounted on the mounting plate (213); a sliding groove is provided at the corresponding positions of the mounting plate (213) and the plug-in block (216), and the plug-in block (216) is slidably mounted inside the sliding groove; a slot is provided at the corresponding positions of the mounting frame (212) and the plug-in block (216), and the plug-in block (216) is plugged inside the slot; the telescopic rod (214), the spring (215), the plug-in block (216), the connecting rod (217) and the cylinder (218) are provided in two groups and are symmetrically distributed at the front center line of the sliding block (211).

4. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 2, characterized in that: The mounting assembly (22) comprises a bolt (221), wherein the bolt (221) is threadedly mounted inside the cylinder (218), a rotating block (225) is threadedly mounted on the top of the bolt (221), a handle (226) is fixedly mounted on the top of the rotating block (225), a pulley frame (222) is arranged outside the bolt (221), a rotating shaft (223) is rotatably mounted inside the pulley frame (222), and a pulley body (224) is fixedly mounted outside the rotating shaft (223).

5. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 4, characterized in that: Through holes are provided at positions corresponding to the bolt (221) on the pulley frame (222), the mounting plate (213), the sliding block (211), and the bolt (221). The bolt (221) passes through the pulley frame (222) and the mounting plate (213) in sequence and is threadedly installed with the cylinder (218), and passes through the cylinder (218) and the sliding block (211) and is threadedly installed with the rotating block (225). The diameter of the rotating block (225) is larger than the diameter of the through hole provided on the sliding block (211).

6. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 4, characterized in that: The moving mechanism (3) comprises a power box (31), the power box (31) is fixedly mounted inside a mounting frame (212), a bevel gear 1 (33) is rotatably mounted inside the mounting frame (212), a bevel gear 2 (34) is rotatably mounted inside the power box (31), a bevel gear 3 (35) is rotatably mounted inside the power box (31), a threaded rod 1 (36) is fixedly mounted on the left side of the bevel gear 2 (34), a threaded rod 2 (37) is fixedly mounted on the right side of the bevel gear 3 (35), and a motor 1 (32) is fixedly mounted inside the power box (31).

7. The anti-fall auxiliary pulley device for a petroleum drilling rig overhead crane according to claim 6, characterized in that: The bevel gear 2 (34) is meshed with the bevel gear 1 (33), the bevel gear 1 (33) is meshed with the bevel gear 3 (35), the threaded direction of the threaded rod 1 (36) and the threaded rod 2 (37) are opposite, the pulley frame (222) is threadedly mounted on the outside of the threaded rod 1 (36), and the output end of the motor 1 (32) is fixedly mounted on the bevel gear 1 (33).

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