Reaming cutter head for raise boring machine

Abstract

The utility model provides a broaching cutterhead for raise boring machine relates to broaching cutterhead technical field, including the cutterhead body and moving frame, the bottom of the cutterhead body is provided with the base, and the outer ring surface of the cutterhead body is provided with six sets of tool apron, the upper part of the tool apron is provided with the linear guide rail, and the linear guide rail is slidingly connected with the moving frame. Outer sleeve plates are arranged at the front end and the rear end of the upper end face of the movable frame, hobs are assembled between the two sets of outer sleeve plates, the hobs are detachably connected with the outer sleeve plates, an upper mounting plate is arranged on the upper portion of the disc body, a middle pull rod is fixed to the center of the upper mounting plate, and a center shaft is arranged at the center of the hobs in a sleeving mode; the front end and the rear end of the center shaft are arranged in the grooves in the same side in a sleeved mode respectively, and fastening nuts are screwed to the front end and the rear end of the center shaft through threads. The broaching size is changed by moving the moving frame back and forth on the linear guide rail, the hob cutter is convenient to disassemble and assemble, and the broaching machine is more flexible and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of hole enlarging cutter discs, in particular to a hole enlarging cutter disc for a raise well drilling machine. Background Art

[0002] The reaming cutter disc includes a disc body and a roller cutter installed on the disc body. The disc body is used to fix the roller cutter. When in use, the main shaft drives the disc body to rotate, and the roller cutter performs circular motion around the center line of the main shaft to perform cutting. It is mainly used for drilling deep well tunnels. With the gradual scale-up of my country's underground mining industry, mines have an increasing demand for the development of large-diameter and deep shafts. Therefore, the use of reaming cutter discs in the drilling industry is becoming more and more common.

[0003] In the specification of a drill-expand combination rock-breaking reverse drilling rig reaming cutter disc and rock-breaking method in the prior art (publication number CN114776223A), it is mentioned that "a plurality of groups of toothed rollers are evenly distributed on the top edge of the disc body, a pull rod is provided at the top center of the disc body, a receiving cavity is provided inside the pull rod, a plurality of expansion blocks evenly distributed along the circumference of the pull rod are slidably connected to the outer wall of the lower part of the pull rod, the expansion blocks can slide radially along the pull rod to the outside of the pull rod, a driving mechanism for driving the expansion blocks to slide is provided in the receiving cavity, and the bottom of the disc body is hollow", but the reaming cutter disc in the prior art cannot adjust the reaming size and the roller cutter cannot be replaced, and is not flexible and practical. Utility Model Content

[0004] In order to overcome the defects of the prior art, a hole enlarging cutter disc for a raise drilling rig is provided to solve the problems that the hole enlarging cutter disc in the prior art cannot adjust the hole enlarging size and the roller cutter cannot be replaced, and is not flexible and practical.

[0005] To achieve the above-mentioned purpose, a reaming cutter disc for a raise drilling rig is provided, comprising a disc body and a movable frame, a base being provided at the bottom of the disc body, and six groups of cutter seats being provided on the outer ring surface of the disc body, a linear guide being provided at the upper part of the cutter seat, and a movable frame being slidably connected to the linear guide, outer sleeve plates being provided at both the front and rear ends of the upper end surface of the movable frame, a roller cutter being assembled between the two groups of outer sleeve plates, and the roller cutter and the outer sleeve plates being connected separately.

[0006] Furthermore, an upper mounting plate is provided on the upper portion of the disk body, and a middle pull rod is fixed at the center of the upper mounting plate.

[0007] Furthermore, the outer ring surface of the middle pull rod is provided with four groups of slots, and the upper end of the middle pull rod is provided with an upper connector.

[0008] Furthermore, an inner cavity is opened in the tool holder, and the linear guide is located in the upper part of the inner cavity, and a stroke-limiting telescopic cylinder is installed on the inner cavity, and the upper end of the stroke-limiting telescopic cylinder is fixed under the linear guide.

[0009] Furthermore, a groove is provided on the upper portion of the outer sleeve plate, and the groove adopts a U-shaped groove structure.

[0010] Furthermore, a central shaft is sleeved in the center of the hob, and the front and rear ends of the central shaft are respectively sleeved in the grooves on the same side, and the front and rear ends of the central shaft are both threadedly twisted with fastening nuts.

[0011] The beneficial effects of the utility model are:

[0012] 1. The setting of the middle pull rod in the utility model is not only strong and firm, but also convenient for positioning and clamping through the card slot, and is accurate and stable to use.

[0013] 2. The utility model can appropriately increase the height position of the linear guide rail and the movable frame through the extension of the stroke-limiting telescopic cylinder, and the movable frame can move forward and backward on the linear guide rail, thereby changing the expansion hole size, which is more flexible and practical.

[0014] 3. The assembly between the hob and the outer sleeve plate in the utility model is convenient and stable, the use is safe and reliable, and the hob can also be disassembled and replaced, which is more convenient and trouble-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a top view schematic diagram of an embodiment of the utility model;

[0017] Figure 3 This is a rendering of a knife holder according to an embodiment of the utility model;

[0018] Figure 4 This is a cross-sectional view of a knife holder according to an embodiment of the utility model.

[0019] In the figure: 1, disk body; 10, upper mounting plate; 11, base; 12, middle pull rod; 13, slot; 14, upper connector; 15, tool holder; 16, inner cavity; 17, travel limit telescopic cylinder; 18, linear guide; 2, mobile frame; 20, outer sleeve plate; 21, groove; 22, hob; 23, center axis; 24, fastening nut. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0021] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0022] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 A schematic top view of an embodiment of the utility model, Figure 3 The knife seat effect diagram and Figure 4 This is a cross-sectional view of a knife holder according to an embodiment of the utility model.

[0023] Reference Figures 1 to 4 As shown, the utility model provides a reaming cutter disc for a raise drilling rig, comprising a disc body 1 and a moving frame 2, a base 11 is provided at the bottom of the disc body 1, and six groups of cutter seats 15 are provided on the outer ring surface of the disc body 1, a linear guide rail 18 is provided on the upper part of the cutter seat 15, and the moving frame 2 is slidably connected to the linear guide rail 18, outer sleeve plates 20 are provided at both ends of the upper end surface of the moving frame 2, and a hob 22 is assembled between the two groups of outer sleeve plates 20, and the hob 22 and the outer sleeve plate 20 are split and connected.

[0024] In this embodiment, an upper mounting plate 10 is provided on the upper part of the disk body 1, and a middle tie rod 12 is fixed at the center of the upper mounting plate 10; four groups of slots 13 are arranged on the outer ring surface of the middle tie rod 12, and an upper connector 14 is arranged at the upper end of the middle tie rod 12.

[0025] As a preferred embodiment, the arrangement of the middle pull rod 12 in the utility model is not only strong and firm, but also convenient for positioning and clamping through the clamping groove 13, and is accurate and stable to use.

[0026] In this embodiment, an inner cavity 16 is opened in the tool holder 15, and a linear guide rail 18 is located in the upper part of the inner cavity 16, and a stroke limit telescopic cylinder 17 is installed on the inner cavity 16, and the upper end of the stroke limit telescopic cylinder 17 is fixed under the linear guide rail 18.

[0027] As a preferred embodiment, the utility model can appropriately increase the height position of the linear guide 18 and the movable frame 2 by extending the stroke-limiting telescopic cylinder 17, and the movable frame 2 can move forward and backward on the linear guide 18, thereby changing the expansion hole size, which is more flexible and practical.

[0028] In this embodiment, a groove 21 is provided on the upper portion of the outer sleeve plate 20, and the groove 21 adopts a U-shaped groove structure; a center shaft 23 is sleeved in the center of the hob 22, and the front and rear ends of the center shaft 23 are respectively sleeved in the groove 21 on the same side, and the front and rear ends of the center shaft 23 are both threadedly twisted with fastening nuts 24.

[0029] As a preferred embodiment, the assembly between the hob 22 and the outer sleeve plate 20 in the utility model is convenient and stable, safe and reliable to use, and can also be disassembled and replaced, which is more convenient and trouble-free.

[0030] The utility model can effectively solve the problems in the prior art that the hole expansion cutter disc cannot adjust the hole expansion size and the hob tool cannot be replaced, which is not flexible and practical. The utility model changes the hole expansion size by moving the movable frame back and forth on the linear guide rail, and is convenient for disassembling and assembling the hob tool, which is more flexible and practical.

[0031] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A hole enlarging cutter head for a raise boring machine, characterized in that: The invention comprises a disk body (1) and a movable frame (2), wherein a base (11) is arranged at the bottom of the disk body (1), and six groups of knife seats (15) are arranged on the outer ring surface of the disk body (1), a linear guide rail (18) is arranged on the upper part of the knife seat (15), and the movable frame (2) is slidably connected to the linear guide rail (18), and outer sleeve plates (20) are arranged at both the front and rear ends of the upper end surface of the movable frame (2), and a hob (22) is assembled between two groups of outer sleeve plates (20), and the hob (22) and the outer sleeve plate (20) are detachably connected.

2. The hole enlarging cutter head for a raise boring machine according to claim 1, characterized in that: An upper mounting plate (10) is provided on the upper part of the disk body (1), and a middle pull rod (12) is fixed at the center of the upper mounting plate (10).

3. The hole enlarging cutter head for a raise boring machine according to claim 2, characterized in that: The outer ring surface of the middle pull rod (12) is provided with four groups of slots (13), and the upper end of the middle pull rod (12) is provided with an upper connector (14).

4. The hole enlarging cutter head for a raise boring machine according to claim 1, characterized in that: An inner cavity (16) is provided in the knife seat (15), and a linear guide rail (18) is located in the upper part of the inner cavity (16). A travel-limiting telescopic cylinder (17) is installed on the inner cavity (16), and the upper end of the travel-limiting telescopic cylinder (17) is fixed under the linear guide rail (18).

5. The hole enlarging cutter head for a raise boring machine according to claim 1, characterized in that: A groove (21) is provided on the upper portion of the outer sleeve plate (20), and the groove (21) adopts a U-shaped groove structure.

6. The hole enlarging cutter head for a raise boring machine according to claim 1, characterized in that: The center of the hob (22) is sleeved with a central shaft (23), and the front and rear ends of the central shaft (23) are respectively sleeved in the grooves (21) on the same side, and the front and rear ends of the central shaft (23) are both screwed with fastening nuts (24) through threads.

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