Propulsion system and raise boring machine

Abstract

A propelling system and a raise boring machine belong to the technical field of mining machinery and comprise a reduction gearbox assembly and a propelling oil cylinder, the reduction gearbox assembly is connected with the propelling oil cylinder through a plurality of connecting adjusting assemblies, each connecting adjusting assembly comprises an adjusting screw sleeve and a bolt, the adjusting screw sleeve is in threaded connection with a connecting flange on the outer cylinder barrel wall of the propelling oil cylinder, and the bolt is connected with the adjusting screw sleeve. The end face of one end of each adjusting threaded sleeve abuts against the side wall of the reduction gearbox assembly, one end of each bolt penetrates through the corresponding adjusting threaded sleeve and is in threaded connection with the reduction gearbox assembly, the other end of each bolt abuts against the end face of the adjacent adjusting threaded sleeve, and the thrust oil cylinder can advance and retreat in the normal direction of the connecting flange by adjusting the specified extending length of the adjusting threaded sleeve. Therefore, the parallelism of the central axis of the reduction gearbox assembly and the central axis of the thrust cylinder is improved, unbalance loading of the thrust cylinder is avoided, the working capacity of the drilling machine is greatly optimized, the service life of the drilling machine is greatly prolonged, the failure rate is reduced, and the maintenance time and cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, and in particular to a propulsion system and a riser drilling rig. Background Technology

[0002] A well drilling rig is a type of mechanical equipment that uses rotary drilling to break rocks and create holes, and can also reverse the hole to expand the borehole. It is mainly used for rock drilling in underground trackless mines and other engineering projects. Its main propulsion system includes a base, a gearbox, a propulsion cylinder, a guide column, and other structures.

[0003] In the propulsion system of the existing well drilling rig, during the installation of the gearbox, the guide columns on both sides of the gearbox are first assembled with the base, then the gearbox is assembled with the guide columns on both sides, and then the propulsion cylinders on both sides of the gearbox are installed on both sides of the reducer. The piston rods of the propulsion cylinders on both sides are assembled and fixed with the base, thereby using the propulsion cylinders to drive the gearbox to move vertically.

[0004] However, the propulsion system of existing well drilling rigs relies entirely on the machining accuracy of components and the operational experience of assembly personnel for its installation precision between the gearbox and the propulsion cylinder. After assembly, it is impossible to improve the parallelism between the central axes of each component through adjustment. The axes between the gearbox and the two propulsion cylinders are not parallel, causing the propulsion cylinders to be unbalanced during construction. This unbalanced load cannot be adjusted and corrected in time. The unbalanced load of the propulsion cylinders will cause instability in the well drilling rig during operation, increase the failure rate, accelerate the wear of the seals inside the propulsion cylinder and other related components, shorten the service life of the well drilling rig, and lead to frequent maintenance and replacement of parts, affecting the normal operation of the equipment, which is time-consuming, labor-intensive and costly. Utility Model Content

[0005] To address the technical problem in the existing headstock drilling rig propulsion system described above, where the installation accuracy between the gearbox and the propulsion cylinder depends on machining accuracy and installation experience, easily leading to non-parallelism and making timely adjustment and correction impossible, this utility model provides a propulsion system and a headstock drilling rig.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a propulsion system, including a gearbox assembly and a propulsion cylinder. The gearbox assembly and the propulsion cylinder are connected by several connecting and adjusting components. The connecting and adjusting components include adjusting sleeves and bolts. The adjusting sleeves are threadedly connected to the connecting flange on the outer cylinder wall of the propulsion cylinder. One end face of the adjusting sleeve abuts against the side wall of the gearbox assembly. One end of the bolt passes through the adjusting sleeve and is threadedly connected to the gearbox assembly. The other end of the bolt abuts against the end face of the adjacent adjusting sleeve. By adjusting the specified extension length of the adjusting sleeve, the propulsion cylinder can move forward and backward along the normal direction of the connecting flange, thereby improving the parallelism between the central axis of the gearbox assembly and the central axis of the propulsion cylinder, avoiding uneven loading of the propulsion cylinder, significantly optimizing the working capacity and service life of the drilling rig, reducing the failure rate, and saving maintenance and repair time and costs.

[0008] Preferably, a washer is provided between the bolt and the adjusting sleeve to provide a seal and prevent the threads from loosening.

[0009] Preferably, the side wall of the gearbox assembly is provided with several first threaded holes, and the connecting flange is provided with several second threaded holes. The second threaded holes penetrate the connecting flange, the adjusting sleeve is threadedly connected to the second threaded hole, and the bolt passes through the adjusting sleeve and is threadedly connected to the first threaded hole. The cooperation between the bolt and the first threaded hole realizes the locking and fixing between the gearbox assembly and the propulsion cylinder. By changing the length of the adjusting sleeve extending out of the second threaded hole, the propulsion cylinder can move forward and backward along the normal direction of the connecting flange, thereby improving the parallelism between the central axis of the gearbox assembly and the central axis of the propulsion cylinder, avoiding the propulsion cylinder being unbalanced, greatly optimizing the working capacity and service life of the drilling rig, reducing the failure rate, and saving maintenance and repair time and costs.

[0010] Preferably, the adjusting screw sleeve includes a large end and a small end. The large end has an outer square structure, which facilitates the driving of the adjusting screw sleeve. The outer wall of the small end is provided with an external thread. The length of the small end is greater than the depth of the second threaded hole, so that the extension length can be adjusted according to the needs to adapt to different adjustment requirements.

[0011] Preferably, the bolt includes a screw and a head, the head abutting against the large end of the adjusting screw sleeve, and the screw threadedly connected to the first threaded hole to achieve locking and fixing between the gearbox assembly and the propulsion cylinder.

[0012] Preferably, there is an assembly gap between the gearbox assembly and the connecting flange of the propulsion cylinder, which facilitates the adjustment of the assembly gap between the gearbox assembly and the two propulsion cylinders by adjusting the adjusting sleeves at each point on the connecting flange of the propulsion cylinder, thereby achieving the adjustment of the axis parallelism.

[0013] This utility model also provides a well drilling rig that uses the aforementioned propulsion system.

[0014] As can be seen from the above technical solutions, the advantages of this utility model are:

[0015] 1. One end face of the adjusting screw sleeve abuts against the side wall of the gearbox assembly. One end of the bolt passes through the adjusting screw sleeve and is threadedly connected to the gearbox assembly. The other end of the bolt abuts against the end face of the adjacent adjusting screw sleeve. The bolt is used to lock and fix the gearbox assembly and the propulsion cylinder. By adjusting the specified extension length of the adjusting screw sleeve and the screw screw insertion length, the propulsion cylinder can move forward and backward along the normal direction of the connecting flange, thereby improving the parallelism between the central axis of the gearbox assembly and the central axis of the propulsion cylinder, avoiding uneven loading of the propulsion cylinder, greatly optimizing the working capacity and service life of the drilling rig, reducing the failure rate, and saving maintenance and repair time and costs.

[0016] 2. An assembly gap is provided between the gearbox assembly and the connecting flange of the propulsion cylinder to facilitate subsequent maintenance and adjustment. A washer is provided between the bolt and the adjusting sleeve to seal and prevent the threads from loosening. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram (partial cross-sectional view) of the overall structure of the propulsion system according to one or more embodiments of the present invention.

[0019] Figure 2 for Figure 1 An enlarged structural schematic diagram of a partial cross-sectional view of the structure shown.

[0020] Figure 3 This is a top view of the propulsion system according to one or more embodiments of the present invention.

[0021] The components represented by the various reference numerals in the diagram are:

[0022] 1. Gearbox assembly; 2. Propulsion cylinder; 3. Bolts; 4. Washers; 5. Adjusting sleeves. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] Example 1

[0025] In a typical embodiment of this utility model, such as Figures 1-3 As shown, a propulsion system is proposed, including: a reduction gearbox assembly 1, a propulsion cylinder 2, and a connecting adjustment assembly. There are two propulsion cylinders 2, which are arranged vertically and opposite to each other on both sides of the reduction gearbox assembly 1. The reduction gearbox assembly 1 and the propulsion cylinders 2 are connected by several connecting adjustment assemblies. The position and angle of the propulsion cylinders 2 can be adjusted by the connecting adjustment assemblies to ensure the parallelism between the axes of the reduction gearbox assembly 1 and the propulsion cylinders 2.

[0026] The gearbox assembly 1 has several first threaded holes on its side wall for connecting to the propulsion cylinder 2, so as to be fixedly connected to the propulsion cylinder 2 by connecting adjustment components. A connecting flange is welded and fixed on the outer cylinder wall of the propulsion cylinder 2. The connecting flange has several second threaded holes. The number of second threaded holes is the same as that of the first threaded holes and they correspond one-to-one. Both the first threaded holes and the second threaded holes are provided with internal threads. The second threaded holes pass through the connecting flange.

[0027] The connecting adjustment assembly includes bolt 3, washer 4, and adjusting sleeve 5, such as Figure 2 The adjusting screw sleeve 5 is a sleeve structure. The outer wall of the adjusting screw sleeve 5 is provided with external threads. The adjusting screw sleeve 5 is connected to the second threaded hole by a threaded connection. The two ends of the adjusting screw sleeve 5 are divided into a large end and a small end. The large end has an external square structure so that it can be tightened with a wrench to screw the adjusting screw sleeve 5 into the second threaded hole on the outer cylinder connecting flange of the propulsion cylinder 2. The outer wall of the small end is provided with external threads, and the end face of the small end is flat so as to abut against the outer wall of the gearbox assembly 1.

[0028] The length of the small end of the adjusting screw sleeve 5 is greater than the depth of the second threaded hole, so that the extension length of the adjusting screw sleeve 5 can be changed according to the needs. The size of the large end of the adjusting screw sleeve 5 is greater than the diameter of the second threaded hole, so as to play a limiting role.

[0029] Bolt 3 includes a screw and a head. The head is fixedly located at one end of the screw. The length of the screw is greater than the length of the adjusting sleeve 5. The adjusting sleeve 5 is threaded into the second threaded hole, and the small end face of the adjusting sleeve 5 passes through the second threaded hole and abuts against the side wall of the gearbox assembly 1. The screw of bolt 3 passes through the adjusting sleeve 5 and is threadedly connected to the first threaded hole. The head of bolt 3 abuts against the large end face of the adjusting sleeve 5, thereby achieving a fixed connection between the gearbox assembly 1 and the propulsion cylinder 2. In order to protect bolt 3 and adjusting sleeve 5 and to achieve the purpose of sealing and preventing thread loosening, a washer 4 is set between the head of bolt 3 and the large end face of adjusting sleeve 5, and the screw passes through the washer 4.

[0030] It should be noted that an assembly gap is reserved between the connecting flange of the gearbox assembly 1 and the propulsion cylinder 2, so as to adjust the assembly gap between the gearbox assembly 1 and the two propulsion cylinders 2 by adjusting the adjusting sleeves 5 at each point on the connecting flange of the propulsion cylinder 2, thereby achieving the adjustment of the axis parallelism.

[0031] The specific working principle is as follows:

[0032] Place the small end of the adjusting sleeve 5 into the second threaded hole of the connecting flange of the propulsion cylinder 2, and fix it to the second threaded hole by means of threaded connection. Align the second threaded hole with the first threaded hole on the gearbox assembly 1. Pass the bolt 3 through the inner hole of the washer 4, then through the adjusting sleeve 5 on the propulsion cylinder 2, and then screw it into the first threaded hole of the gearbox assembly 1. At the same time, the end face of the small end of the adjusting sleeve 5 abuts against the outer wall of the gearbox assembly 1 to achieve locking and fixing between the gearbox assembly 1 and the propulsion cylinders 2 on both sides.

[0033] When it is necessary to adjust the relative position between the gearbox assembly 1 and the propulsion cylinder 2, rotate the adjusting sleeve 5 at the specified position, specifically by adjusting the length of the adjusting sleeve 5 extending out of the second threaded hole, so that the propulsion cylinder 2 moves forward and backward along the normal of the connecting flange, thereby improving the parallelism between the central axis of the gearbox assembly 1 and the central axes of the propulsion cylinders 2 on both sides.

[0034] Understandably, when changing the extension length of the adjusting sleeve 5, it is also necessary to adjust the length of the corresponding bolt 3 screwed into the first threaded hole.

[0035] The propulsion system in this embodiment has a compact, simple, and reliable overall structure. Without increasing the external dimensions (height and width), it achieves precise adjustment of the positions of the propulsion cylinders on both sides during the assembly and maintenance of the gearbox of the well drilling rig. It has high precision, strong practicality, and greatly optimizes the working capacity and service life of the drilling rig, reduces the failure rate, and saves time and costs for maintenance and repair.

[0036] In addition, the adjusting screw sleeve 5 can be replaced as a spare part to avoid damage to the threaded hole on the propulsion cylinder flange, which would prevent replacement and repair.

[0037] Example 2

[0038] In another typical embodiment of this utility model, a well drilling rig is proposed, which utilizes the propulsion system mentioned in Embodiment 1, including a gearbox assembly 1, a propulsion cylinder 2, and a connecting adjustment component. The gearbox assembly 1 and the propulsion cylinder 2 are connected by the connecting adjustment component, which can adjust the parallelism of the central axis between the gearbox assembly 1 and the propulsion cylinder 2 as needed.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A propulsion system, comprising: The gearbox assembly (1) and the propulsion cylinder (2) are characterized in that the gearbox assembly (1) and the propulsion cylinder (2) are connected by a number of connecting adjustment components. The connecting adjustment components include adjusting sleeves (5) and bolts (3). The adjusting sleeves (5) are threadedly connected to the connecting flange on the outer cylinder wall of the propulsion cylinder (2). One end face of the adjusting sleeves (5) abuts against the side wall of the gearbox assembly (1). One end of the bolt (3) passes through the adjusting sleeves (5) and is threadedly connected to the gearbox assembly (1). The other end of the bolt (3) abuts against the end face of the adjacent adjusting sleeves (5).

2. The propulsion system according to claim 1, characterized in that, A washer (4) is provided between the bolt (3) and the adjusting sleeve (5).

3. The propulsion system according to claim 1, characterized in that, The gearbox assembly (1) has several first threaded holes on its side wall. The connecting flange on the outer cylinder wall of the propulsion cylinder (2) has several second threaded holes. The second threaded holes pass through the connecting flange. The adjusting sleeve (5) is threadedly connected to the second threaded hole. The bolt (3) passes through the adjusting sleeve (5) and is threadedly connected to the first threaded hole.

4. The propulsion system according to claim 3, characterized in that, The adjusting screw sleeve (5) includes a large end and a small end. The large end has an outer square structure, and the outer wall of the small end is provided with an external thread. The length of the small end is greater than the depth of the second threaded hole.

5. The propulsion system according to claim 4, characterized in that, The bolt (3) includes a screw and a head. The head abuts against the large end of the adjusting screw sleeve (5), and the screw is threadedly connected to the first threaded hole.

6. The propulsion system according to claim 1, characterized in that, An assembly gap is provided between the connecting flange of the gearbox assembly (1) and the propulsion cylinder (2).

7. A well drilling rig, characterized in that, The propulsion system described in any one of claims 1-6 is employed.

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