Rotary excavating device for roadway tunneling

Abstract

The utility model belongs to the technical field of rotary excavating accessories, and particularly relates to a rotary excavating device for roadway tunneling, which comprises a connecting piece and an assembling frame, a drill bit base body is arranged at the bottom of the connecting piece, an assembling piece is fixedly arranged at the top of the connecting piece, the assembling piece is U-shaped, and a plurality of transverse assembling insertion holes are symmetrically formed in two sides of the assembling piece; the assembling frame is arranged on the assembling part in a sleeving mode, an assembling cavity is formed in an inner cavity of the assembling frame, and two movable plates moving in the opposite directions are arranged at the positions, located on the inner side of the assembling part, in the assembling cavity. According to the utility model, a bolt type quick release structure of the assembly insertion rod and the assembly insertion hole is adopted, and the left-hand and right-hand thread transmission of the driving rod is matched, so that the drill bit can be quickly mounted and dismounted without a special tool, the replacement time is greatly shortened, and the labor intensity is reduced; by means of dovetail groove matching of the limiting block and the limiting groove and an inserted link locking mechanism, a double torque transmission path of vertical positioning and horizontal locking is formed, and the power transmission stability and the tunneling efficiency are improved.

Description

A rotary excavator for tunnel excavation Technical Field

[0001] This utility model relates to the field of rotary excavator accessories technology, specifically a rotary excavator for tunnel excavation. Background Technology

[0002] Existing tunneling equipment has certain inconveniences in practical applications, such as the complicated process of changing the excavation drill bit, which requires special tools to disassemble multiple bolts, resulting in long operation time and high labor intensity. It is particularly inefficient in confined spaces such as underground mines. Therefore, it is necessary to develop a rotary excavation device for tunneling. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0005] A rotary excavator for tunnel boring includes a connector and an assembly frame.

[0006] The bottom of the connector is provided with a drill bit base, and the top of the connector is fixedly provided with an assembly. The assembly is U-shaped and has multiple horizontal assembly holes symmetrically opened on both sides.

[0007] The assembly frame is sleeved on the assembly component. The assembly frame has an assembly cavity inside. Inside the assembly cavity, on the inner side of the assembly component, are two movable plates that move in opposite directions. The two movable plates have a transverse assembly rod protruding from the side facing the assembly insertion hole, which is adapted to fit and be inserted into the assembly insertion hole. Inside the assembly cavity, above the assembly component, is a transverse drive rod that rotates via a bearing. The drive rod has external threads with opposite directions on its left and right sides. The drive rod is screwed through the side wall of the movable plate through the external threads. Each external thread screws through only one side wall of the movable plate. The rotating drive rod drives the two movable plates to move in opposite directions.

[0008] As a preferred embodiment of the rotary excavation device for tunneling described in this utility model, the drill bit base includes a central drill bit disposed at the center of the bottom of the connector, and a cutterhead arranged spirally along the length direction of the central drill bit.

[0009] As a preferred embodiment of the rotary excavator for tunneling described in this utility model, the assembly has symmetrically protruding limiting grooves on both outer sides. The limiting grooves are dovetail-shaped and their lower ends are closed. The inner cavity of the assembly chamber has symmetrically protruding limiting blocks on both sides. The shape of the limiting blocks matches the shape inside the limiting grooves, and the limiting blocks are inserted vertically into the grooves.

[0010] In a preferred embodiment of the rotary excavator for tunneling described in this utility model, when the lower end face of the limiting block is in contact with the lower end face of the limiting groove, the assembly rod is aligned with the assembly hole.

[0011] As a preferred embodiment of the rotary excavator for tunneling described in this utility model, the inner top wall of the assembly cavity is recessed and has a transverse slot, the slot being located directly above the external thread, and a limiting rod parallel to the drive rod is fixedly installed on the inner side of the slot, and the side walls of the two movable plates are slidably penetrated by the rod body of the limiting rod through a linear bearing.

[0012] As a preferred embodiment of the rotary excavator for tunneling described in this utility model, the side wall of the assembly frame is recessed and has a groove, which is not connected to the inner cavity of the assembly chamber, and one end of the drive rod extends into the groove and is provided with a knob.

[0013] In a preferred embodiment of the rotary excavator for tunneling described in this utility model, a connecting rod is fixedly provided at the top center of the assembly frame, and an installation hole is provided on the connecting rod.

[0014] The beneficial effects of this utility model are: by adopting a pin-type quick-release structure for assembling the insertion rod and the assembly insertion hole, and in conjunction with the left and right spiral thread transmission of the drive rod, the drill bit can be quickly installed and removed without special tools, which greatly shortens the replacement time and reduces labor intensity; by utilizing the dovetail groove cooperation of the limiting block and the limiting groove and the insertion rod locking mechanism, a dual torque transmission path of vertical positioning and horizontal locking is formed, which improves the stability of power transmission and tunneling efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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. Among them:

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a structural schematic diagram of the internal components of the assembly frame of this utility model;

[0018] Figure 3 is a schematic diagram of the structure of the present invention after the assembly rod is pulled out of the assembly socket in Figure 2.

[0019] Figure 4 is a schematic diagram of the structure of the connector and assembly frame in Figure 3 of this utility model after disassembly;

[0020] Figure 5 is a structural schematic diagram of the assembly frame of this utility model from a bottom view.

[0021] Figure 6 is a structural schematic diagram of the movable plate, assembly rod, and linear bearing of this utility model.

[0022] In the figure: connector 100, center drill bit 101, cutter head 102, assembly 103, assembly insertion hole 104, fixing frame 105, limiting groove 106, limiting block 107, assembly frame 200, assembly cavity 201, movable plate 202, assembly insertion rod 203, drive rod 204, external thread 205, slot 206, limiting rod 207, linear bearing 208, knob 209, groove 210. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please refer to Figures 1-6, which show the structural schematic diagram of an embodiment of a rotary excavator for tunneling according to the present invention. Please refer to Figures 1-6 for a detailed description of a rotary excavator for tunneling.

[0028] A rotary excavator for tunnel excavation includes a connector 100 and an assembly frame 200. The bottom of the connector 100 is provided with a drill bit base, and the top of the connector 100 is fixedly provided with an assembly 103. The assembly 103 is U-shaped and has multiple transverse assembly holes 104 symmetrically opened on both sides.

[0029] The assembly frame 200 is sleeved on the assembly component 103. The assembly frame 200 has an assembly cavity 201. Inside the assembly cavity 201, two movable plates 202 that move in opposite directions are arranged inside the assembly component 103. The two movable plates 202 have a transverse assembly rod 203 that is adapted to fit and fit into the assembly insertion hole 104 on the side facing the assembly insertion hole 104. Inside the assembly cavity 201, above the assembly component 103, a transverse drive rod 204 is rotatably arranged via a bearing. The drive rod 204 has external threads 205 with opposite directions on its left and right sides. The drive rod 204 is screwed through the side wall of the movable plate 202 through the external threads 205. Each external thread 205 is screwed through the side wall of only one movable plate 202. The rotating drive rod 204 drives the two movable plates 202 to move in opposite directions.

[0030] Wherein: the drill bit base includes a central drill bit 101 disposed at the bottom center of the connector 100, and a cutter head 102 arranged spirally and progressively along the length direction of the central drill bit 101. The central drill bit 101 can first break the rock in the center of the tunnel to form a guide hole, and then the surrounding cutter head 102 can enlarge the hole to reduce the overall breaking resistance.

[0031] Wherein: On both sides of the assembly component 103, symmetrically protruding limiting grooves 106 are provided. The limiting grooves 106 are dovetail-shaped and the lower end of the limiting grooves 106 is closed. On both sides of the inner cavity of the assembly cavity 201, symmetrically protruding limiting blocks 107 are provided. The shape of the limiting blocks 107 is adapted to the shape of the limiting grooves 106. The limiting blocks 107 are inserted vertically into the grooves of the limiting grooves 106. Through the setting of the limiting blocks 107 and the limiting grooves 106, the two can only be installed vertically relative to each other, which further improves the stability of the assembly frame 200 and the assembly component 103 after assembly.

[0032] Wherein: when the lower end face of the limiting block 107 is in contact with the lower end face of the groove of the limiting groove 106, the assembly rod 203 is aligned with the assembly hole 104, which is conducive to the rapid alignment of the assembly rod 203 and the assembly hole 104 and improves the assembly efficiency.

[0033] Wherein: the inner top wall of the assembly cavity 201 is recessed with a transverse slot 206, the slot 206 is located directly above the external thread 205, and a limiting rod 207 parallel to the drive rod 204 is fixedly installed on the inner side of the slot 206. The side walls of the two movable plates 202 are slidably penetrated by the rod body of the limiting rod 207 through the linear bearing 208. When the drive rod 204 rotates, the movable plates 202 are limited by the limiting rod 207, so that the movable plates 202 cannot rotate, ensuring that the two movable plates 202 can be driven to move towards each other through the external thread 205, so that the assembly rod 203 can be inserted into or withdrawn from the assembly insertion hole 104 to complete the assembly or disassembly.

[0034] Wherein: the side wall of the assembly frame 200 is recessed with a groove 210, the groove 210 is not connected to the inner cavity of the assembly cavity 201, one end of the drive rod 204 extends into the groove 210 and is provided with a knob 209, the knob 209 can be used to drive the drive rod 204 to rotate.

[0035] Wherein: A connecting rod 211 is fixedly provided at the top center of the assembly frame 200. The connecting rod 211 has a mounting hole, which can be used to connect the assembly frame 200 to the output shaft of an external drive device, such as an excavator motor, through the mounting hole and a coupling.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rotary excavator for tunnel boring, comprising a connector (100) and an assembly frame (200), characterized in that: The bottom of the connector (100) is provided with a drill bit base, and the top of the connector (100) is fixedly provided with an assembly (103). The assembly (103) is U-shaped and has multiple transverse assembly holes (104) symmetrically opened on both sides. The assembly frame (200) is sleeved on the assembly (103). The inner cavity of the assembly frame (200) is provided with an assembly cavity (201). Inside the assembly cavity (201), located inside the assembly (103), are two movable plates (202) that move in opposite directions. The two movable plates (202) protrude from the side facing the assembly holes (104) with fittings. A transverse assembly rod (203) fits into the assembly socket (104). Inside the assembly cavity (201), above the assembly (103), a transverse drive rod (204) is rotatably mounted via a bearing. The drive rod (204) has external threads (205) with opposite directions on its left and right sides. The drive rod (204) is screwed through the side wall of the movable plate (202) via the external threads (205). Each external thread (205) is screwed through the side wall of only one movable plate (202). The rotating drive rod (204) drives the two movable plates (202) to move towards each other.

2. The rotary excavator for tunnel boring according to claim 1, characterized in that: The drill bit body includes a central drill bit (101) disposed at the bottom center of the connector (100) and a cutter head (102) arranged spirally along the length direction of the central drill bit (101).

3. The rotary excavator for tunnel boring according to claim 1, characterized in that: The assembly (103) has symmetrically protruding limiting grooves (106) on both outer sides. The limiting grooves (106) are dovetail-shaped and the lower end of the limiting grooves (106) is closed. The inner cavity of the assembly cavity (201) has symmetrically protruding limiting blocks (107) on both sides. The shape of the limiting blocks (107) is adapted to the shape inside the limiting grooves (106), and the limiting blocks (107) are vertically fitted and inserted into the grooves of the limiting grooves (106).

4. The rotary excavator for tunnel boring according to claim 3, characterized in that: When the lower end face of the limiting block (107) is in contact with the lower end face of the limiting groove (106), the assembly rod (203) is aligned with the assembly hole (104).

5. A rotary excavator for tunnel boring according to claim 1, characterized in that: The inner top wall of the assembly cavity (201) is recessed with a transverse slot (206). The slot (206) is located directly above the external thread (205). A limiting rod (207) parallel to the drive rod (204) is fixedly installed on the inner side of the slot (206). The side walls of the two movable plates (202) are slidably penetrated by the rod body of the limiting rod (207) through a linear bearing (208).

6. The rotary excavator for tunnel boring according to claim 1, characterized in that: The side wall of the assembly frame (200) is recessed with a groove (210), which is not connected to the inner cavity of the assembly cavity (201). One end of the drive rod (204) extends into the groove (210) and is provided with a knob (209).

7. The rotary excavator for tunnel boring according to claim 1, characterized in that: A connecting rod (211) is fixedly installed at the top center of the assembly frame (200), and the connecting rod (211) has an installation hole.

Images