Heavy elevator
By adopting a combination design of bearing seat, thrust ball bearing and elastic cylindrical pin in the inductor, the problems of high production cost and short service life of the existing inductor are solved, and higher axial force bearing capacity and better Fast replacement speed improves work efficiency.
Patent Information
- Application Number
- CN202421642640.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Due to the combination of four angular contact ball bearings, the existing attractors have high production costs, difficult assembly and short service life, and there is a radial capability deviation, which increases the purchasing cost of users and affects the progress of the project.
A heavy-duty lead-in is designed, with ring steps and grinding bushings inside the bearing seat, and thrust ball bearings and shaft sleeves are installed. The axial fixation is achieved through the ring bolts and self-locking nuts. The elastic cylindrical pins are used to perform two types. Second fixed, simplifying the structure and reducing production costs.
This design improves the axial force bearing capacity of the lead-in, reduces production costs, simplifies the assembly process, improves the speed and working efficiency of replacement parts, and extends the service life of the equipment.
Smart Images
Figure CN222207824U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of drilling, in particular to a heavy-duty lifting device. Background Art
[0002] The drilling rig is one of the indispensable mechanical equipment in rope coring construction. The lifter is called a "universal swivel joint". The bottom of the lifter is connected to the drill rod, and the top is connected to the wire rope of the main winch of the drilling rig. As the wire rope is lifted and lowered, the drill bit and the drill rod are lifted and lowered. The lifter bears the lifting load of the main winch and eliminates the torque output by the power head to protect the main winding wire rope from curling, breaking, and kinking due to rotation.
[0003] The current market generally uses a combination of four angular contact ball bearings. This structure requires four bearings, has high manufacturing costs, and is difficult to assemble. In addition, since this structure is subject to radial capacity deviation, the service life of this type of lifter is not very long. The replacement of the lifter not only increases the user's procurement cost, but also affects the project progress of multiple users. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides a heavy-duty lifter, which aims to improve the problems of the current structure's ability to withstand radial deviation, high manufacturing cost, and greater assembly difficulty.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy-duty lifter, comprising a bearing seat, a circular step is provided in the cavity of the bearing seat, a wear-bearing bushing is installed on the top plate of the bearing seat, a lifting eye bolt is provided inside the wear-bearing bushing, a thrust ball bearing is installed inside the bearing seat, a shaft sleeve is provided outside the thrust ball bearing, the middle of the shaft sleeve is slidably connected to the outside of one end of the lifting eye bolt, a self-locking nut and an elastic cylindrical pin are provided outside one end of the lifting eye bolt, the width of both sides of the self-locking nut is less than the outer diameter of the thrust ball bearing, the length of the elastic cylindrical pin is less than the outer diameter of the thrust ball bearing, and one end of the lifting eye bolt passes through the thrust ball bearing and the internal thread of the shaft sleeve and is connected to the inside of the self-locking nut.
[0006] Preferably, the bearing seat includes an eye bolt, a sleeve, and a housing.
[0007] Preferably, a retaining ring is provided at one end of the eyebolt, and the other end of the eyebolt is a threaded portion with an external pin hole. The threaded portion of the eyebolt fixes the thrust ball bearing and the shaft sleeve through a self-locking nut, and the elastic cylindrical pin fixes the thrust ball bearing and the shaft sleeve for a second time.
[0008] Preferably, the outer parts of the eye bolt and the shaft sleeve are arranged inside the bearing seat.
[0009] Preferably, the exterior of the self-locking nut and the elastic cylindrical pin are arranged inside the bearing seat.
[0010] Preferably, the interior of the shaft sleeve is inserted into the exterior of one end of the thrust ball bearing.
[0011] Preferably, an oil filling nozzle is provided inside the bearing seat.
[0012] Preferably, one end of the eye bolt is provided with a thread on the outside, and the internal thread of the self-locking nut is connected to the outside of one end of the eye bolt.
[0013] The utility model has the following beneficial effects:
[0014] 1. In the utility model, a retaining ring is provided at one end of the eye bolt for axial fixation of the bearing seat, and the other end relies on a self-locking nut to fix the bearing, the bearing seat and the shaft sleeve. The thrust ball bearing is mounted on the shaft sleeve, and the thrust ball bearing bears the axial force alone. The thrust ball bearing can withstand relatively high axial dynamic loads and static loads. In order to fix it firmly, the eye bolt is provided with a pin hole and an elastic cylindrical pin is used for secondary fixation. The structure is relatively simple, the manufacturing cost is low, the parts can be replaced quickly, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a schematic diagram of the internal structure of a bearing seat of a heavy-duty lifter.
[0016] Legend:
[0017] 1. Eyebolt; 2. Wear bushing; 3. Bearing seat; 4. Grease nozzle; 5. Thrust ball bearing; 6. Bushing; 7. Self-locking nut; 8. Elastic cylindrical pin; 9. Housing. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings of the specification 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.
[0019] Reference Figure 1The utility model provides an embodiment: a heavy-duty lifter, including a bearing seat 3, an oiling nozzle 4 is provided inside the bearing seat 3, a circular step is provided in the cavity of the bearing seat 3, a wear bushing 2 is installed on the top plate of the bearing seat 3, a lifting eye bolt 1 is provided inside the bearing seat 3, a thrust ball bearing 5 is installed inside the bearing seat 3, a shaft sleeve 6 is provided outside the thrust ball bearing 5, the inside of the shaft sleeve 6 is inserted into the outside of one end of the thrust ball bearing 5, the middle of the shaft sleeve 6 is slidably connected to the outside of one end of the lifting eye bolt 1, a self-locking nut 7 and an elastic cylindrical pin 8 are provided outside one end of the lifting eye bolt 1, the width of both sides of the self-locking nut 7 is less than the outer diameter of the thrust ball bearing 5, the length of the elastic cylindrical pin 8 is less than the outer diameter of the thrust ball bearing 5, and one end of the lifting eye bolt 1 passes through the thrust ball bearing 5. The internal threads of the ball bearing 5 and the sleeve 6 are connected to the inside of the self-locking nut 7, the outside of the eye bolt 1 and the sleeve 6 are arranged inside the bearing seat 3, and the outside of the self-locking nut 7 and the elastic cylindrical pin 8 are arranged inside the bearing seat 3; a retaining ring is provided at one end of the eye bolt 1 for axial fixation of the bearing seat 3, and the other end relies on the self-locking nut 7 to fix the bearing, the bearing seat 3 and the sleeve 6. The sleeve 6 is located in the cavity of the bearing seat 3, and the thrust ball bearing 5 is mounted on the sleeve 6. The thrust ball bearing 5 bears the axial force alone. Since the working state of the lifter is to withstand lower rotational force and larger axial force and axial impact force, the thrust ball bearing 5 can withstand relatively high axial dynamic load and static load. In order to fix it firmly, the eye bolt 1 is provided with a pin hole and a secondary fixation is performed with an elastic cylindrical pin 8.
[0020] The bearing seat 3 includes an eyebolt 1, a sleeve 6, and a housing 9; the eyebolt 1 is used to achieve the effect of safe suspension and lifting, the sleeve 6 is used to achieve the effect of protecting and supporting the bearing or sliding parts, and the housing 9 is used to provide structural support and protection of internal parts.
[0021] A retaining ring is provided at one end of the eye bolt 1, and the other end of the eye bolt 1 is a threaded portion with an additional pin hole. The threaded portion of the eye bolt 1 fixes the thrust ball bearing 5 and the shaft sleeve 6 through a self-locking nut 7, and the elastic cylindrical pin 8 fixes the thrust ball bearing 5 and the shaft sleeve 6 for a secondary time; the secondary fixation of the thrust ball bearing 5 and the shaft sleeve 6 by the elastic cylindrical pin 8 can achieve a more stable effect during use.
[0022] One end of the eye bolt 1 is provided with a thread on the outside, and the internal thread of the self-locking nut 7 is connected to the outside of one end of the eye bolt 1; the effect of threaded connection with the self-locking nut 7 is achieved by the threaded shape of one end of the eye bolt 1.
[0023] Working principle: when the equipment needs to be used, a retaining ring is provided at one end of the eyebolt 1 for axial fixation of the bearing seat 3, and the other end relies on a self-locking nut 7 to fix the bearing, the bearing seat 3, and the sleeve 6. The sleeve 6 is located in the cavity of the bearing seat 3, and the thrust ball bearing 5 is mounted on the sleeve 6. The thrust ball bearing 5 bears the axial force alone. Since the working state of the lifter is to withstand lower rotational force and larger axial force and axial impact force, the thrust ball bearing 5 can withstand relatively high axial dynamic load and static load. In order to fix the eyebolt 1 firmly, a pin hole is opened and an elastic cylindrical pin 8 is used for secondary fixation. The wear bushing 2 is made of rubber injection molding to reduce the wear of the eyebolt 1 during rotation. The structure is relatively simple, the production cost is low, the parts can be replaced quickly, and the work efficiency is improved.
[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A heavy lifter, comprising a bearing seat (3), Features: A circular step is provided in the cavity of the bearing seat (3), a wear bushing (2) is installed on the top plate of the bearing seat (3), a lifting eye bolt (1) is provided inside the wear bushing (2), a thrust ball bearing (5) is installed inside the bearing seat (3), a shaft sleeve (6) is provided outside the thrust ball bearing (5), the middle of the shaft sleeve (6) is slidably connected to the outside of one end of the lifting eye bolt (1), a self-locking nut (7) and an elastic cylindrical pin (8) are provided on the outside of one end of the lifting eye bolt (1), the width of both sides of the self-locking nut (7) is less than the outer diameter of the thrust ball bearing (5), the length of the elastic cylindrical pin (8) is less than the outer diameter of the thrust ball bearing (5), and the outside of one end of the lifting eye bolt (1) passes through the thrust ball bearing (5) and the internal thread of the shaft sleeve (6) and is connected to the inside of the self-locking nut (7).
2. A heavy lifter according to claim 1, Features: The bearing seat (3) comprises an eye bolt (1), a shaft sleeve (6), and a housing (9).
3. A heavy lifter according to claim 1, Features: A retaining ring is provided at one end of the eyebolt (1), and a threaded portion with a pin hole is provided at the other end of the eyebolt (1). The threaded portion of the eyebolt (1) fixes the thrust ball bearing (5) and the shaft sleeve (6) via a self-locking nut (7), and the elastic cylindrical pin (8) fixes the thrust ball bearing (5) and the shaft sleeve (6) for a second time.
4. A heavy lifter according to claim 1, Features: The outside of the eye bolt (1) and the shaft sleeve (6) are arranged inside the bearing seat (3).
5. A heavy-duty lifter according to claim 1, Features: The exterior of the self-locking nut (7) and the elastic cylindrical pin (8) are arranged inside the bearing seat (3).
6. A heavy-duty lifter according to claim 1, Features: The interior of the shaft sleeve (6) is sleeved onto the exterior of one end of the thrust ball bearing (5).
7. A heavy-duty lifter according to claim 1, Features: An oil injection nozzle (4) is provided inside the bearing seat (3).
8. A heavy lifter according to claim 1, Features: One end of the eye bolt (1) is provided with a thread on the outside, and the internal thread of the self-locking nut (7) is connected to the outside of one end of the eye bolt (1).