Oil cylinder structure for drilling machine and raise boring machine

Abstract

The utility model provides an oil cylinder structure for a drilling machine and a raise boring machine, and belongs to the technical field of mining mechanical equipment. According to the technical scheme, the oil cylinder structure for the drilling machine comprises an oil cylinder assembly and a base, the oil cylinder assembly comprises an oil cylinder body, the oil cylinder body comprises a cylinder barrel and a piston rod body, the piston rod body is movably connected into the cylinder barrel, the piston rod body moves in the cylinder barrel in the axial direction of the piston rod body, a connecting section is arranged at the end, opposite to the cylinder barrel, of the piston rod body, and a fixing groove is formed in the base. The connecting section is connected with the fixing groove in an inserted mode, the base is connected with a locking piece, and the locking piece is at least used for adjusting the inner diameter of the fixing groove so as to tightly hold the connecting section. According to the structure, the inner diameter of the fixing groove is reduced through the locking piece, so that the piston rod body is tightly held by the inner wall of the fixing groove, the contact connection area of the piston rod body and the fixing groove is increased, transverse torque transmitted when a drilling machine works and the oil cylinder body moves is reduced, and distortion and deformation of the connection section are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery and equipment, in particular to an oil cylinder structure for a drilling rig and a raise drilling rig. Background Art

[0002] A raise drill is a shaft excavation machine that uses a rotary drill to break rock and form holes, and can also expand the holes in reverse. The thrust cylinder in the raise drill mainly provides propulsion and adjusts the working height of the drill. The feed and working height of the drill can be adjusted by advancing and retracting the telescopic sleeve. At the same time, the thrust of the thrust cylinder is also an important source of power for the drill to perform drilling operations. The thrust cylinder is related to the construction efficiency of the drilling and has an impact on the overall performance of the drill.

[0003] However, the current fastening structure of the propulsion cylinder mostly adopts the traditional hinged and bolted connection method. After long-term use, the fastening structure is prone to twisting or deformation due to the large stroke of the propulsion cylinder and the large torque generated by the operation of the drilling rig during construction, affecting the connection stability of the fastening structure, thereby affecting the normal operation of the drilling rig and greatly reducing the performance of the drilling rig. Utility Model Content

[0004] Aiming at the problem that the current fastening structure of the propulsion oil cylinder is a traditional hinged or bolted connection, which is prone to distortion or deformation due to large torque, the utility model proposes an oil cylinder structure for a drilling rig and a raise drilling rig.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a cylinder structure for a drilling rig, comprising a cylinder assembly and a base, wherein the cylinder assembly comprises a cylinder body, the cylinder body comprises a cylinder barrel and a piston rod body, the piston rod body is movably connected in the cylinder barrel, and the piston rod body moves along its own axial direction in the cylinder barrel, a connecting section is provided at one end of the piston rod body opposite to the cylinder barrel, the base is provided with a fixing groove, the connecting section is plugged into the fixing groove, and the base is connected to a locking member, the locking member is at least used to adjust the inner diameter of the fixing groove to hold the connecting section tightly. This structure adjusts the inner diameter of the fixing groove by the locking member so that the inner wall of the fixing groove holds the piston rod body tightly, thereby increasing the contact connection area between the piston rod body and the fixing groove. The fixing groove holds the piston rod body tightly in the transverse direction, which can effectively reduce the transverse torque transmitted during the operation of the drilling rig and the movement of the cylinder body, avoid twisting and deformation of the connecting section, and further reduce the tightening strength, thereby achieving a tightening effect.

[0007] Furthermore, the fixing groove is provided with a locking through-groove, the notch of which is formed on the inner wall of the fixing groove and extends axially along the fixing groove. The base is provided with a locking bolt through-hole, the extension direction of which is perpendicular to the extension direction of the fixing groove and which is in communication with the locking through-groove. The locking member is provided with a locking bolt and a locking nut, which are cooperatively connected with the locking bolt through-hole. By the mutual tension between the locking bolt, the locking nut and the locking bolt through-hole, the notch of the locking through-groove is contracted, thereby reducing the inner diameter of the fixing groove. This structure is simple, easy to operate, and effectively prevents overall deformation of the fixing groove.

[0008] Furthermore, a plurality of locking through grooves are provided along the circumference of the fixing groove, and the plurality of locking through grooves are symmetrically arranged along the axis of the fixing groove, thereby further improving the accuracy and uniformity of the change in the inner diameter of the fixing groove.

[0009] Furthermore, the base is provided with a first fastening hole, the axial direction of which is aligned with the radial direction of the fixing slot, and the first fastening hole is connected to the fixing slot. The connecting section is provided with a second fastening hole, which extends radially along the piston rod body. When the connecting section is plugged into the fixing slot, the first fastening hole and the second fastening hole are connected. The base is connected to an expansion pin, which passes through the first and second fastening holes in sequence. The expansion pin utilizes the expansion function of the expansion pin to tighten the cylinder rod body, thereby resisting deformation caused by the torque generated during drilling operation by the drilling rig, greatly reducing the deformation caused by the strong pulling force and torque generated during operation, and improving the stability of equipment operation.

[0010] Furthermore, the structure includes a connecting nut. The end of the connecting section is provided with a first thread that mates with the connecting nut. A fixing groove is provided through the base. The connecting section is connected to the fixing groove so that at least a portion of the first thread is exposed from the fixing groove. The connecting nut mates with the portion of the connecting section exposed from the fixing groove. The outer diameter of the connecting nut is larger than the inner diameter of the fixing groove. This serves to vertically limit and secure the piston rod body, effectively preventing the piston rod body from separating from the base due to vertical force, and further improving the connection tightness.

[0011] Furthermore, a gasket is provided between the connecting nut and the base to avoid direct friction between the connecting nut and the base, thereby increasing its service life.

[0012] Furthermore, the cylinder assembly comprises at least two cylinder bodies, each with a base having a number of fixing slots equal to the number of cylinder bodies. The two cylinder bodies are arranged in parallel, and a fixed crossbeam connects the cylinder barrels of the two cylinder bodies. This secures the relative position of the cylinder bodies to ensure the parallelism of the central axes of the cylinder bodies required by the equipment, thereby preventing deformation caused by the strong pressure and tension during the drilling and expansion of the raise drilling rig.

[0013] The utility model also provides a raise drilling rig, comprising any one of the above-mentioned oil cylinder structures for a drilling rig.

[0014] It can be seen from the above technical solutions that the advantages of the present invention are:

[0015] 1. The utility model reduces the inner diameter of the fixing groove by means of a locking member, so that the inner wall of the fixing groove hugs the piston rod body, thereby increasing the contact connection area between the piston rod body and the fixing groove. The fixing groove hugs the piston rod body in the transverse direction, which can effectively reduce the transverse torque transmitted when the drilling rig is working and when the cylinder body moves, avoids twisting and deformation of the connection section, and further reduces the fastening strength, thereby achieving a fastening effect.

[0016] 2. The utility model tightens the oil cylinder rod body by utilizing the expansion function of the expansion pin body, thereby resisting the deformation caused by the torque generated during the drilling construction of the drilling rig, greatly reducing the deformation effect caused by the strong pulling force and torque generated by the construction, and improving the stability of the equipment operation.

[0017] 3. The utility model fixes the relative position of the cylinder body by fixing the crossbeam, thereby ensuring the parallelism of the central axis of the cylinder body required by the equipment and avoiding the influence of deformation caused by the strong pressure and tension during the pilot hole and expansion of the hole by the raise drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural diagram of the oil cylinder structure in one embodiment of the utility model;

[0020] Figure 2 This is a structural diagram of a base in one embodiment of the present utility model;

[0021] Figure 3 This is a partial cross-sectional view of the connection structure between the piston rod body and the base in one embodiment of the present utility model.

[0022] 100. Base; 110. Fixing groove; 120. Locking through groove; 130. Locking bolt through hole; 150. First fastening hole; 200. Cylinder body; 210. Cylinder barrel; 220. Piston rod body; 221. Connecting section; 222. Second fastening hole; 223. First thread; 300. Locking bolt; 400. Expansion pin body; 500. Connecting nut; 510. Gasket; 600. Fixed beam. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0024] Example 1

[0025] See also Figure 1-Figure 3 A cylinder structure for a drilling rig includes a cylinder assembly and a base 100. The cylinder assembly includes a cylinder body 200. The cylinder body 200 includes a cylinder barrel 210 and a piston rod body 220. The piston rod body 220 is movably connected in the cylinder barrel 210, and the piston rod body 220 moves along its own axial direction in the cylinder barrel 210. A connecting section 221 is provided at one end of the piston rod body 220 relative to the cylinder barrel 210. The base 100 is provided with a fixing groove 110. The connecting section 221 is plugged into the fixing groove 110. The base 100 is connected to a locking piece, which is used at least to adjust the inner diameter of the fixing groove 110 to hold the connecting section 221 tightly.

[0026] In this embodiment, if Figure 1 As shown, the oil cylinder body 200 is placed vertically, and one end of the piston rod body 220 is movably connected to the cylinder barrel 210. The piston rod body 220 can move back and forth in a vertical direction in the cylinder barrel 210 to achieve the telescopic movement of the oil cylinder body 200. The end of the piston rod body 220 opposite to the cylinder barrel 210 is connected to the base 100 to achieve a fastening effect on the oil cylinder body 200, so that the structural stability of the oil cylinder body 200 is maintained during the telescopic movement. Specifically, a connecting section 221 is provided on one side of the piston rod body 220, and a fixing groove 110 is provided on the base 100. The fixing groove 110 can be a circular hole structure, wherein the inner diameter of the fixing groove 110 is slightly larger than the outer diameter of the piston rod body 220, so that the connecting section 221 can be easily inserted into the fixing groove 110. During installation, the base 100 is placed horizontally so that the fixing groove 110 is set in the vertical direction, with the opening of the fixing groove 110 facing upward, and the connecting section 221 of the piston rod body 220 is inserted into the fixing groove 110. Then, the locking piece is connected to the base 100. The locking piece can adjust the inner diameter of the fixing groove 110. When the connecting section 221 is inserted into the corresponding position of the fixing groove 110, the locking piece reduces the inner diameter of the fixing groove 110 so that the inner wall of the fixing groove 110 hugs the piston rod body 220, thereby completing the fastening of the cylinder body 200. When the cylinder body 200 needs to be disassembled, the inner diameter of the fixing groove 110 is increased through the locking piece so that the connecting section 221 can be separated from the fixing groove 110.

[0027] In the above structure, a fixing groove 110 is provided on the base 100, and after the connecting section 221 of the piston rod body 220 is inserted into the fixing groove 110, the inner diameter of the fixing groove 110 is reduced by the locking member, so that the inner wall of the fixing groove 110 hugs the piston rod body 220, thereby increasing the contact connection area between the piston rod body 220 and the fixing groove 110. In addition, the fixing groove 110 hugs the piston rod body 220 in the transverse direction, which can effectively reduce the lateral torque transmitted when the drilling rig is working and when the cylinder body 200 moves, avoids twisting and deformation of the connecting section 221, and further reduces the fastening strength, thereby achieving the fastening effect.

[0028] In the specific connection structure between the locking member and the base 100, as shown in FIG. Figure 2 、 3 As shown, the fixing groove 110 is provided with a locking through-slot 120, the notch of which is formed on the inner wall of the fixing groove 110 and extends axially along the fixing groove 110. The base 100 is provided with a locking bolt through-hole 130, the extension direction of which is perpendicular to the extension direction of the fixing groove 110 and which is in communication with the locking through-slot 120. The locking member is provided with a locking bolt 300 and a locking nut, which are engaged with the locking bolt 300 and the locking nut in the locking bolt through-hole 130. Multiple locking through-slots 120 are provided along the circumference of the fixing groove 110, and the multiple locking through-slots 120 are symmetrically arranged along the axis of the fixing groove 110.

[0029] In this embodiment, a locking through-slot 120 extending in the vertical direction is provided on the base 100, wherein the notch of the locking through-slot 120 is formed on the inner wall of the fixing groove 110, and the depth direction of the locking through-slot 120 is the radial direction of the fixing groove 110. In addition, a locking bolt through-hole 130 is provided on the side end surface of the base 100, wherein the locking bolt through-hole 130 extends in the transverse direction, and the side wall of the locking bolt through-hole 130 is communicated with the locking through-slot 120. The locking bolt through-hole 130 does not pass through the fixing groove 110. When tightening is required, the locking bolt 300 is engaged with the locking bolt through-hole 130, and a locking nut is connected to the other end of the locking bolt 300. By passing the locking bolt 300 through the locking bolt through-hole 130 and connecting the locking nut, the notch of the locking through-groove 120 is forced to contract under the action of the mutual tension, thereby reducing the inner diameter of the fixing groove 110 to achieve a tight grip on the piston rod body 220. This structure is simple and easy to operate, and the inner diameter of the fixing groove 110 is adjusted by changing the notch of the locking through-groove 120, effectively preventing the fixing groove 110 from being deformed as a whole.

[0030] In addition, in order to further improve the accuracy and uniformity of the change in the inner diameter of the fixing groove 110, a plurality of locking grooves 120 are arranged circumferentially around the fixing groove 110. In the present embodiment, six locking grooves 120 are provided. The six grooves are respectively arranged on opposite sides of the fixing groove 110, with three on each side, so that the six locking grooves 120 are symmetrically arranged along the axis of the fixing groove 110, thereby improving the uniformity of the adjustment of the inner diameter of the fixing groove 110. In addition, a plurality of locking bolt through holes 130 are also provided, which are respectively located on opposite sides of the fixing groove 110 and correspond to the locking grooves 120, so as to facilitate locking.

[0031] More specifically, Figure 2 、 3 As shown, the base 100 is provided with a first fastening hole 150, the axial direction of the first fastening hole 150 is consistent with the radial direction of the fixing groove 110, and the first fastening hole 150 is connected with the fixing groove 110, and the connecting section 221 is provided with a second fastening hole 222, and the second fastening hole 222 extends along the radial direction of the piston rod body 220. When the connecting section 221 is plugged into the fixing groove 110, the first fastening hole 150 is connected with the second fastening hole 222, and the base 100 is connected with a tightening pin body 400, and the tightening pin body 400 passes through the first fastening hole 150 and the second fastening hole 222 in sequence.

[0032] In this embodiment, a first fastening hole 150 is provided on the side face of the base 100. The first fastening hole 150 extends along the radial direction of the fixing groove 110 and passes through the center position of the fixing groove 110 to be connected with the fixing groove 110. A second fastening hole 222 is also provided on the connecting section 221 inserted into the fixing groove 110. The second fastening hole 222 extends along its own radial direction. When the connecting section 221 is inserted into the fixing groove 110, the first fastening hole 150 and the second fastening hole 222 are relative and connected. Then the expansion pin body 400 is passed through the first fastening hole 150 and the second fastening hole 222. The expansion function of the expansion pin body 400 is used to tighten the cylinder rod body, thereby resisting the deformation caused by the torque generated during drilling construction by the drilling rig, greatly reducing the deformation effect caused by the strong pulling force and torque generated by the construction, and improving the stability of the equipment operation.

[0033] In addition, if Figure 3 As shown, the structure also includes a connecting nut 500. The end of the connecting section 221 is provided with a first thread 223 that cooperates with the connecting nut 500. The fixing groove 110 is provided through the base 100. The connecting section 221 is connected to the fixing groove 110 so that at least a portion of the first thread 223 is exposed from the fixing groove 110. The connecting nut 500 is engaged with the portion of the connecting section 221 exposed from the fixing groove 110, and the outer diameter of the connecting nut 500 is larger than the inner diameter of the fixing groove 110. A gasket 510 is provided between the connecting nut 500 and the base 100.

[0034] In this embodiment, a first thread 223 is further provided at the tail end of the connecting section 221. The fixing groove 110 on the base 100 is a through-slot structure. When the connecting section 221 is inserted into the fixing groove 110, at least a portion of the first thread 223 at the tail end is exposed from the fixing groove 110 and is threadedly connected to the connecting nut 500. The outer diameter of the connecting nut 500 is larger than the inner diameter of the fixing groove 110, thereby preventing the connecting nut 500 from entering the fixing groove 110. This serves to vertically limit and fix the piston rod body 220, effectively preventing the piston rod body 220 from separating from the base 100 due to vertical force, further improving the connection tightness. In addition, a gasket 510 is provided between the connecting nut 500 and the base 100 to prevent direct friction between the connecting nut 500 and the base 100, thereby damaging the connecting nut 500 or the base 100, thereby improving their service life.

[0035] In addition, the cylinder assembly includes at least two cylinder bodies 200, the base 100 is provided with fixing grooves 110 of the same number as the cylinder bodies 200, the two cylinder bodies 200 are arranged in parallel, and a fixed crossbeam 600 is connected between the cylinder barrels 210 of the two cylinder bodies 200.

[0036] In this embodiment, if Figure 1 As shown, in order to make the drilling rig work more stable, the cylinder assembly is provided with two parallel cylinder bodies 200. In addition, a fixed crossbeam 600 is fixedly connected between the cylinder barrels 210 of the two cylinder bodies 200, thereby fixing the relative positions of the cylinder bodies 200. This not only ensures the parallelism requirement of the central axis of the cylinder body 200 required by the equipment, but also avoids the influence of deformation caused by the strong pressure and tension during the pilot hole and expansion of the well drilling rig.

[0037] Example 2

[0038] The utility model also provides a roof drilling rig, which comprises an oil cylinder structure for the drilling rig.

[0039] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0040] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drilling rig oil cylinder structure, characterized in that: It includes a cylinder assembly and a base, the cylinder assembly includes a cylinder body, the cylinder body includes a cylinder barrel and a piston rod body, the piston rod body is movably connected in the cylinder barrel, and the piston rod body moves along its own axial direction in the cylinder barrel, the piston rod body is provided with a connecting section at one end relative to the cylinder barrel, the base is provided with a fixing groove, the connecting section is plugged into the fixing groove, and the base is connected to a locking piece, and the locking piece is at least used to adjust the inner diameter of the fixing groove to hold the connecting section tightly.

2. The oil cylinder structure for a drilling rig according to claim 1, characterized in that: The fixing groove is provided with a locking through groove, the notch of the locking through groove is formed on the inner wall of the fixing groove, the locking through groove extends along the axial direction of the fixing groove, the base is provided with a locking bolt through hole, the extension direction of the locking bolt through hole is perpendicular to the extension direction of the fixing groove, the locking bolt through hole is communicated with the locking through groove, the locking piece is provided with a locking bolt and a locking nut, the locking bolt, the locking nut are matched with the locking bolt through hole.

3. The oil cylinder structure for a drilling rig according to claim 2, characterized in that: The locking through grooves are provided in plurality along the circumference of the fixing groove, and the plurality of locking through grooves are symmetrically arranged along the axis of the fixing groove.

4. The oil cylinder structure for a drilling rig according to claim 1, characterized in that: The base is provided with a first fastening hole, the axial direction of the first fastening hole is consistent with the radial direction of the fixing groove, and the first fastening hole is communicated with the fixing groove, the connecting section is provided with a second fastening hole, the second fastening hole extends along the radial direction of the piston rod body, when the connecting section is plugged into the fixing groove, the first fastening hole is communicated with the second fastening hole, the base is connected with an expansion pin body, and the expansion pin body passes through the first fastening hole and the second fastening hole in sequence.

5. The oil cylinder structure for a drilling rig according to claim 1, characterized in that: It also includes a connecting nut, the end of the connecting section is provided with a first thread that cooperates with the connecting nut, the fixing groove is set through the base, the connecting section is connected to the fixing groove, so that at least part of the first thread is exposed from the fixing groove, the connecting nut is matched and connected with the part of the connecting section exposed from the fixing groove, and the outer diameter of the connecting nut is larger than the inner diameter of the fixing groove.

6. The oil cylinder structure for a drilling rig according to claim 5, characterized in that: A gasket is provided between the connecting nut and the base.

7. A cylinder structure for a drilling rig according to any one of claims 1 to 6, wherein the cylinder assembly includes at least two cylinder bodies, the base is provided with fixing grooves the same number as the cylinder bodies, the two cylinder bodies are arranged in parallel, and a fixed crossbeam is connected between the cylinder barrels of the two cylinder bodies.

8. A raise boring machine, characterized in that: A drilling rig oil cylinder structure as described in any one of claims 1 to 7 is adopted.

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